Cooling device of automobile die casting and machining method of automobile die casting

Abstract

The invention relates to a cooling device of an automobile die casting and a machining method of the automobile die casting. The cooling device comprises: a lower die plate comprising an intermediate plate and a male die; the upper die plate comprises a material pressing plate and a female die, the material pressing plate corresponds to the middle plate, the female die corresponds to the male die, and a die casting area is formed between the female die and the male die; wherein the female die and the male die are provided with cooling channels. In the cooling process of the integrated die-casting part, deformation of the die-casting part can be prevented, and the cooling time is shortened.

Description

Technical Field

[0001] The invention relates to the manufacturing field of automobile die castings, and in particular to a cooling device for automobile die castings and a processing method for automobile die castings. Background Art

[0002] One-piece die casting is one of the common manufacturing methods for automotive parts. The principle is to use a press to hydraulically inject metal into the mold. One-piece die casting can produce metal parts with complex shapes and thin walls, and has many advantages such as integrated manufacturing cost reduction, weight reduction and increased mileage, and greatly improved production efficiency. After the existing automotive parts are poured and die-cast, the robot takes the die-casting parts out of the die-casting mold and transfers them to the water cooling pool for water cooling. There is a problem of dimensional deformation of the die-casting parts. Therefore, there is room for improvement. Summary of the invention

[0003] The invention provides a cooling device for automobile die castings and a processing method for automobile die castings, so as to solve the technical problem of dimensional deformation of die castings in the process of water cooling in the prior art.

[0004] The present invention provides a cooling device for automobile die castings, comprising:

[0005] The lower mold plate includes a middle plate and a punch;

[0006] An upper mold plate, the upper mold plate comprising a pressing plate and a concave mold, the pressing plate corresponds to the middle plate, the concave mold corresponds to the convex mold, and a die casting area is formed between the concave mold and the convex mold;

[0007] Wherein, cooling channels are provided on the concave mold and the convex mold.

[0008] In one embodiment of the present invention, the cooling channels on the die are arranged along one side of the die casting area, and the cooling channels on the punch are arranged along the other side of the die casting area. The adjacent cooling channels on the die are connected to form a first path, and the shape of the first path is the same as the shape of the path arranged in the die casting area. The adjacent cooling channels on the punch are connected to form a second path, and the shape of the second path is the same as the shape of the path arranged in the die casting area.

[0009] In one embodiment of the present invention, in the concave mold and / or the convex mold, the diameter of the cooling channel is between 6 mm and 12 mm.

[0010] In one embodiment of the present invention, in the concave mold and / or the convex mold, the distance between adjacent cooling channels is between 8 mm and 12 mm.

[0011] In one embodiment of the present invention, the cooling channel on the concave mold is at a distance of 7 mm to 13 mm from the boundary of the concave mold, and the cooling channel on the convex mold is at a distance of 7 mm to 13 mm from the boundary of the convex mold.

[0012] In one embodiment of the present invention, along the direction of the die casting area arrangement path, the cooling channels on the female die and the cooling channels on the male die are arranged alternately.

[0013] The present invention provides a method for processing automobile die castings, comprising:

[0014] Arranging an intermediate plate and a male mold on the lower mold plate;

[0015] placing the die casting to be cooled on the intermediate plate and the male mold;

[0016] An upper mold plate is installed on the top of the lower mold plate, and a pressing plate and a concave mold are arranged on the upper mold plate, wherein the pressing plate corresponds to the middle plate, the concave mold corresponds to the convex mold, and a die casting area for accommodating the die casting is formed between the concave mold and the convex mold;

[0017] Cooling channels are provided on the concave die and the convex die to cool the die casting inside the die casting area.

[0018] In one embodiment of the present invention, the step of providing cooling channels on the concave mold and the convex mold comprises:

[0019] A cooling channel is provided on the die along one side of the die casting area, and a cooling channel is provided on the die in a direction parallel to the arrangement path of the die casting area, so that adjacent cooling channels on the die are connected to form a first path, and the shape of the first path is the same as the shape of the arrangement path of the die casting area;

[0020] A cooling channel is opened on the punch along the other side of the die casting area, and a cooling channel is opened on the punch along a direction parallel to the arrangement path of the die casting area, so that adjacent cooling channels on the punch are connected to form a second path, and the shape of the second path is the same as the shape of the arrangement path of the die casting area.

[0021] In one embodiment of the present invention, in the step of cooling the die casting inside the die casting area:

[0022] In the cooling channel, cooling water with a preset water temperature, a preset flow rate, and a preset water pressure is introduced to cool the die casting inside the die casting area.

[0023] In one embodiment of the present invention, in the step of cooling the die casting inside the die casting area:

[0024] In the cooling channel, cooling water with a water temperature of 18°C ​​to 20°C, a flow rate of 150L / min to 300L / min, and a water pressure of 5bar to 8bar is introduced to cool the die castings inside the die casting area.

[0025] Beneficial effects of the present invention: The present invention provides a cooling device for automobile die-castings and a processing method for automobile die-castings. The present invention cools the integral die-casting parts, prevents the die-casting parts from being deformed, and can shorten the cooling time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shown is a schematic structural diagram of an upper mold plate in a cooling device for an automobile die casting according to the present invention.

[0027] Figure 2 Shown is a schematic structural diagram of a lower mold plate in a cooling device for an automobile die casting according to the present invention.

[0028] Figure 3 The figure shows a cross-sectional view taken along line AA of a cooling device for an automobile die casting according to the present invention.

[0029] Figure 4 Shown is a schematic diagram of the steps of a method for processing an automobile die casting according to the present invention.

[0030] Figure 5 Shown as the present invention Figure 4 Schematic diagram of step S50 in FIG.

[0031] Figure 6 Shown is a processing flow chart of an automobile die-casting part according to the present invention.

[0032] Component number description

[0033] 10. Upper mold plate; 11. Pressing plate; 12. Concave mold; 13. Upper mold frame; 20. Lower mold plate; 21. Middle plate; 22. Punch; 23. Lower mold frame; 30. Upper mold bottom plate; 40. Lower mold bottom plate; 50. Die casting area; 51. Die casting boundary; 60. Cooling channel; 61. First path; 62. Second path; 63. Boundary distance. DETAILED DESCRIPTION

[0034] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0035] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0036] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0037] See also Figures 1 to 6 The present invention provides a cooling device for automobile die castings and a processing method for automobile die castings, which can be applied in the cooling process of mechanical parts, for example, in the cooling process of automobile die castings. The present invention can improve the product performance of parts, ensure that parts will not be deformed during cooling, and improve the production and processing efficiency of parts. The following is a detailed description through specific embodiments.

[0038] See also Figure 1 , Figure 2 and Figure 3 In one embodiment of the present invention, the present invention provides a cooling device for automobile die castings, which may include an upper mold plate 10, a lower mold plate 20, an upper mold bottom plate 30 and a lower mold bottom plate 40. Figure 3As shown, the lower die bottom plate 40 may be located at the bottommost position, and the lower die plate 20 may be installed on the top of the lower die bottom plate 40. The upper die plate 10 may be installed on the top of the lower die plate 20, and the upper die bottom plate 30 may be installed on the top of the upper die plate 10, and the upper die bottom plate 30 may be located at the topmost position. The lower die plate 20 may include an intermediate plate 21 and a punch 22, the number of the intermediate plate 21 is one, the number of the punch 22 is multiple, for example, the number of the punch 22 may be six. The multiple punches 22 may be located at the peripheral position of the intermediate plate 21. The upper die plate 10 may include a press plate 11 and a die 12, the number of the press plate 11 is one, the number of the die 12 is multiple, for example, the number of the die 12 may be six. The multiple die 12 may be located at the peripheral position of the press plate 11. The press plate 11 corresponds to the intermediate plate 21, the multiple die 12 corresponds to the multiple die 22, and a die casting area 50 may be formed between the die 12 and the punch 22. A plurality of cooling channels 60 may be provided on the die 12, and the plurality of cooling channels 60 on the die 12 may be arranged along one side of the die casting area 50. A plurality of cooling channels 60 may be provided on the punch 22, and the plurality of cooling channels 60 on the punch 12 may be arranged along the other side of the die casting area 50. In the present invention, the upper mold plate 10 and the lower mold plate 20 are used as a cooling field, and flowing cooling water is introduced into the cooling channel 60 to cool the integral die casting part, thereby avoiding deformation of the part and shortening the cooling time.

[0039] See also Figure 1 In one embodiment of the present invention, the distance between the concave mold 12 and the upper mold frame 13 of the upper mold plate 10 can exceed 200 mm, and the distance between the pressing plate 11 and the upper mold frame 13 of the upper mold plate 10 can exceed 200 mm. Figure 2 The distance between the punch 22 and the lower mold frame 23 of the lower mold plate 20 can exceed 200 mm, and the distance between the middle plate 21 and the lower mold frame 23 of the lower mold plate 20 can exceed 200 mm.

[0040] See also Figure 3, in an embodiment of the present invention, the connecting lines of adjacent cooling channels 60 on the female mold 12 can form a first path 61, and the shape of the first path 61 is the same as the shape of the layout path of the die-casting part area 50. The connecting lines of adjacent cooling channels 60 on the male mold 22 can form a second path 62, and the shape of the second path 62 is the same as the shape of the layout path of the die-casting part area 50. For example, when the shape of the die-casting part area 50 is in the shape of "ji", the shape of the first path 61 can be in the shape of "ji", and the shape of the second path 62 can be in the shape of "ji". By setting the shapes of the first path 61 and the second path 62 to be the same as the shape of the die-casting part area 50, on the female mold 12 and the male mold 22, the cooling water in the cooling channels 60 can cool the die-casting parts in the die-casting part area 50 sufficiently and efficiently. For the first path 61 and the second path 62 formed by multiple cooling channels 60, the widths of the first path 61 and the second path 62 exceed the positions of the die-casting part boundaries 51 on one side of the die-casting part area 50. Along the direction of the layout path of the die-casting part area 50, the cooling channels 60 on the female mold 12 and the cooling channels 60 on the male mold 22 can be arranged alternately, which can ensure an efficient cooling effect. For example, along the direction of the layout path of the die-casting part area 50, for the cooling channels 60 on the female mold 12 and the cooling channels 60 on the male mold 22, they can be arranged alternately in a 10 mm distance interval.

[0041] Please refer to Figure 3 , in an embodiment of the present invention, the maximum size of the male mold 22 can be 300 mm * 300 mm * 300 mm, and the maximum size of the female mold 12 can be 300 mm * 300 mm * 300 mm. The thickness of the upper die base plate 30 can be greater than or equal to 60 mm, and the thickness of the lower die base plate 40 can be greater than or equal to 60 mm. In the female mold 12 and / or the male mold 22, the diameter of the cooling channel 60 can be between 6 mm and 12 mm. For example, the diameter of the cooling channel 60 can be 6 mm, 8 mm, 10 mm, 12 mm, etc. In the female mold 12 and / or the male mold 22, the distance between adjacent cooling channels 60 is between 8 mm and 12 mm. For example, the distance between adjacent cooling channels 60 is 10 mm. The distance 63 between the cooling channels 60 on the female mold 12 and the boundary of the female mold 12 is between 7 mm and 13 mm, and the distance 63 between the cooling channels 60 on the male mold 22 and the boundary of the male mold 22 is between 7 mm and 13 mm. When arranging the cooling water channels 60, seals can be used for sealing to prevent water leakage.

[0042] Please refer to Figure 4 , in an embodiment of the present invention, the present invention also proposes a processing method for automotive die-castings, which may include the following steps.

[0043] Step S10: Install the lower template on the top of the lower die base plate, and set the intermediate plate and the male mold on the lower template.

[0044] Step S20: placing the die casting to be cooled on the intermediate plate and the punch.

[0045] Step S30, installing the upper template on the top of the lower template, and setting a pressure plate and a die on the upper template, wherein the pressure plate corresponds to the middle plate, the die corresponds to the punch, and a die-casting area for accommodating the die-casting is formed between the die and the punch.

[0046] Step S40: Install the upper mold base plate on the top of the upper mold plate.

[0047] Step S50, opening cooling channels on the die and the punch to cool the die casting inside the die casting area, wherein the cooling channels on the die are arranged along one side of the die casting area, and the cooling channels on the punch are arranged along the other side of the die casting area.

[0048] Step S10, installing the lower mold plate on the top of the lower mold base plate, and setting the middle plate and the punch on the lower mold plate.

[0049] In one embodiment of the present invention, the lower mold base plate 40 may be located at the bottommost position, and the lower mold plate 20 may be installed on the top of the lower mold base plate 40. The upper mold plate 10 may be installed on the top of the lower mold plate 20, and the upper mold base plate 30 may be installed on the top of the upper mold plate 20, and the upper mold base plate 30 may be located at the topmost position. The lower mold plate 20 may include an intermediate plate 21 and a male mold 22, the number of the intermediate plate 21 is one, and the number of the male molds 22 is multiple, for example, the number of the male molds 22 may be six. The multiple male molds 22 may be located at the peripheral position of the intermediate plate 21.

[0050] Step S20: placing the die casting to be cooled on the intermediate plate and the punch.

[0051] In one embodiment of the present invention, the die casting to be cooled is placed in the middle plate 21 and the punch 22 to facilitate the subsequent cooling process of the die casting.

[0052] Step S30, installing the upper template on the top of the lower template, and setting a pressure plate and a die on the upper template, wherein the pressure plate corresponds to the middle plate, the die corresponds to the punch, and a die-casting area for accommodating the die-casting is formed between the die and the punch.

[0053] In one embodiment of the present invention, the upper mold plate 10 may include a press plate 11 and a die 12, wherein the number of the press plate 11 is one, and the number of the die 12 is multiple, for example, the number of the die 12 may be six. The multiple die 12 may be located at the peripheral position of the press plate 11. The press plate 11 corresponds to the middle plate 21, and the multiple die 12 corresponds to the multiple convex 22, and a die casting area 50 may be formed between the die 12 and the convex 22.

[0054] Step S40: Install the upper mold base plate on the top of the upper mold plate.

[0055] In one embodiment of the present invention, an upper mold bottom plate 30 may be installed on the top of the upper mold plate 20 , and the upper mold bottom plate 30 may be located at the topmost position.

[0056] Step S50, opening cooling channels on the die and the punch to cool the die casting inside the die casting area, wherein the cooling channels on the die are arranged along one side of the die casting area, and the cooling channels on the punch are arranged along the other side of the die casting area.

[0057] In one embodiment of the present invention, a plurality of cooling channels 60 may be provided on the die 12, and the plurality of cooling channels 60 on the die 12 may be arranged along one side of the die casting area 50. A plurality of cooling channels 60 may be provided on the punch 22, and the plurality of cooling channels 60 on the punch 12 may be arranged along the other side of the die casting area 50. In the present invention, the upper mold plate 10 and the lower mold plate 20 are used as a cooling field, and flowing cooling water is introduced into the cooling channel 60 to cool the integral die casting part, thereby avoiding deformation of the part and shortening the cooling time.

[0058] See also Figure 5 In one embodiment of the present invention, step S50 may include step S510, step S520 and step S530. Step S510 may be represented as opening a cooling channel 60 on the die 12 in a direction parallel to the arrangement path of the die casting area 50, so that adjacent cooling channels 60 on the die 12 are connected to form a first path 61, and the shape of the first path 61 is the same as the shape of the arrangement path of the die casting area 50. Step S520 may be represented as opening a cooling channel 60 on the punch 22 in a direction parallel to the arrangement path of the die casting area 50, so that adjacent cooling channels 60 on the punch 22 are connected to form a second path 62, and the shape of the second path 62 is the same as the shape of the arrangement path of the die casting area 50. Step S530 may be represented as passing cooling water with a preset water temperature, a preset flow rate and a preset water pressure into the cooling channel 60 to cool the die casting inside the die casting area 50. For example, cooling water with a water temperature of 18° C. to 20° C., a flow rate of 150 L / min to 300 L / min, and a water pressure of 5 to 8 bar is introduced into the cooling channel 60 to cool the die casting inside the die casting area 50 .

[0059] See also Figure 6In one embodiment of the present invention, the process flow chart of the integrated die-casting parts can be: aluminum ingot batching, vacuum die-casting, in-mold cooling, plasma cutting, deburring, CNC machining, cleaning, inspection and packaging. After the cooling of the die-casting is completed, the robot arm can grab the die-casting and transport it to the plasma equipment for plasma cutting of the die-casting. During the in-mold cooling process, the die-casting is placed in the mold, and the special machine tool can drive the upper template 10 and the lower template 20 to close the mold. The upper template 10 and the lower template 20 are used as the cooling field, and flowing cooling water is passed into the cooling channel 60, which can reduce the temperature of the die-casting from 300°C to room temperature within 10 seconds, completing the cooling and rapid annealing process of the die-casting. Since the die-casting is completely inside the cavity of the upper template 10 and the lower template 20, the present application avoids deformation of the parts and shortens the cooling time.

[0060] In summary, the present invention provides a cooling device for automobile die-castings and a processing method for automobile die-castings. The present invention cools the integral die-casting parts, prevents the die-casting parts from being deformed, and can shorten the cooling time.

[0061] The flow chart and block diagram in the accompanying drawings illustrate the possible implementation architecture, function and operation of the method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment, or a part of a code, and the module, program segment, or a part of a code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0062] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A cooling device for automobile die castings, characterized in that: include: The lower mold plate includes a middle plate and a punch; An upper mold plate, the upper mold plate comprising a pressing plate and a concave mold, the pressing plate corresponds to the middle plate, the concave mold corresponds to the convex mold, and a die casting area is formed between the concave mold and the convex mold; Wherein, cooling channels are provided on the concave mold and the convex mold.

2. The cooling device for automobile die casting according to claim 1, characterized in that: The cooling channels on the die are arranged along one side of the die casting area, and the cooling channels on the punch are arranged along the other side of the die casting area. The adjacent cooling channels on the die are connected to form a first path, and the shape of the first path is the same as the shape of the path arranged in the die casting area. The adjacent cooling channels on the punch are connected to form a second path, and the shape of the second path is the same as the shape of the path arranged in the die casting area.

3. The cooling device for automobile die casting according to claim 1, characterized in that: In the concave mold and / or the convex mold, the diameter of the cooling channel is between 6 mm and 12 mm.

4. The cooling device for automotive die casting according to claim 1, characterized in that: In the concave mold and / or the convex mold, the distance between adjacent cooling channels is between 8 mm and 12 mm.

5. The cooling device for automobile die casting according to claim 1, characterized in that: The distance between the cooling channel on the concave mold and the boundary of the concave mold is between 7 mm and 13 mm, and the distance between the cooling channel on the convex mold and the boundary of the convex mold is between 7 mm and 13 mm.

6. The cooling device for automobile die casting according to claim 1, characterized in that: Along the direction of the die casting area arrangement path, the cooling channels on the concave die and the cooling channels on the convex die are arranged alternately.

7. A method for processing automobile die castings, characterized in that: include: Arranging an intermediate plate and a male mold on the lower mold plate; placing the die casting to be cooled on the intermediate plate and the male mold; An upper mold plate is installed on the top of the lower mold plate, and a pressing plate and a concave mold are arranged on the upper mold plate, wherein the pressing plate corresponds to the middle plate, the concave mold corresponds to the convex mold, and a die casting area for accommodating the die casting is formed between the concave mold and the convex mold; Cooling channels are provided on the concave die and the convex die to cool the die casting inside the die casting area.

8. The method for processing automobile die castings according to claim 7, characterized in that: The step of providing cooling channels on the concave die and the convex die comprises: A cooling channel is provided on the die along one side of the die casting area, and a cooling channel is provided on the die in a direction parallel to the arrangement path of the die casting area, so that adjacent cooling channels on the die are connected to form a first path, and the shape of the first path is the same as the shape of the arrangement path of the die casting area; A cooling channel is opened on the punch along the other side of the die casting area, and a cooling channel is opened on the punch along a direction parallel to the arrangement path of the die casting area, so that adjacent cooling channels on the punch are connected to form a second path, and the shape of the second path is the same as the shape of the arrangement path of the die casting area.

9. The method for processing automobile die castings according to claim 7, characterized in that: In the step of cooling the die casting inside the die casting area: In the cooling channel, cooling water with a preset water temperature, a preset flow rate, and a preset water pressure is introduced to cool the die casting inside the die casting area.

10. The method for processing automobile die castings according to claim 7, characterized in that: In the step of cooling the die casting inside the die casting area: In the cooling channel, cooling water with a water temperature of 18°C ​​to 20°C, a flow rate of 150L / min to 300L / min, and a water pressure of 5bar to 8bar is introduced to cool the die castings inside the die casting area.

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