Hot working device and method for automobile die casting

Abstract

The invention relates to a hot working device for an automobile die casting and a machining method for the automobile die casting. The hot working device comprises a lower die plate connected to the top of a lower die bottom plate, and the lower die plate comprises a middle 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; the upper die bottom plate is connected to the top of the upper die plate, a plurality of driving springs are arranged on the upper die bottom plate, and the driving springs make contact with the pressing plate and the female die; wherein the female die is provided with a heating channel, and the male die is provided with a heating channel. The machining precision of the thermal shaping process of the die casting is high, and the product quality of the die casting can be guaranteed.

Description

Technical Field

[0001] The invention relates to the manufacturing field of automobile die castings, and in particular to a hot processing 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 a 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. Existing automotive parts have the problem of dimensional deformation of die castings after completing the water cooling process, and the dimensional deformed die castings need to be processed. Therefore, there is room for improvement. Summary of the invention

[0003] The present invention provides a hot processing device and a processing method for automobile die castings, so as to solve the technical problem in the prior art that the die castings are deformed in size after water cooling and the deformed die castings need to be processed. The present invention can improve the product performance of the parts, play a shaping role after the die casting parts are subjected to hot shaping treatment, and improve the production and processing efficiency of the die casting parts.

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

[0005] A lower mold plate connected to the top of the lower mold bottom plate, the lower mold plate comprising an intermediate plate and a male mold;

[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; and

[0007] The upper mold base plate is connected to the top of the upper mold plate, and a plurality of driving springs are arranged on the upper mold base plate, and the plurality of driving springs contact the pressure plate and the concave mold; wherein a heating channel is provided on the concave mold, and a heating channel is provided on the convex mold.

[0008] In one embodiment of the present invention, the heating channel on the die is arranged along one side of the die-casting area, and the heating channel on the punch is arranged along the other side of the die-casting area. The working stroke of the pressure plate corresponding to the driving spring is a first stroke, and the working stroke of the die corresponding to the driving spring is a second stroke, and the first stroke is greater than the second stroke.

[0009] In one embodiment of the present invention, adjacent heating channel lines on the die form a first path, the shape of the first path is the same as the shape of the die casting area layout path, and adjacent heating channel lines on the punch form a second path, the shape of the second path is the same as the shape of the die casting area layout path.

[0010] In one embodiment of the present invention, along the direction of the die casting area arrangement path, the heating channels on the female die and the heating channels on the male die are arranged alternately.

[0011] In one embodiment of the present invention, in the concave mold and / or the convex mold, the diameter of the heating channel is between 10 mm and 15 mm.

[0012] In one embodiment of the present invention, in the concave mold and / or the convex mold, the distance between adjacent heating channels is between 20 mm and 30 mm.

[0013] In one embodiment of the present invention, the heating channel on the concave mold is at a distance of 10 mm to 20 mm from the boundary of the concave mold, and the heating channel on the convex mold is at a distance of 10 mm to 20 mm from the boundary of the convex mold.

[0014] The present invention provides a method for processing automobile die castings, comprising:

[0015] Arranging an intermediate plate and a male mold on the lower mold plate;

[0016] placing the die casting to be processed on the intermediate plate and the punch;

[0017] 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;

[0018] An upper mold base plate is installed on the top of the upper mold plate, and a plurality of drive springs are arranged on the upper mold base plate so that the plurality of drive springs contact the pressure plate and the die; and heating channels are opened on the die and the punch to perform heat treatment on the die casting inside the die casting area.

[0019] In one embodiment of the present invention, the step of making the plurality of driving springs contact the pressing plate and the die comprises:

[0020] The working stroke of the driving spring at the top of the pressing plate is recorded as the first stroke, and the working stroke of the driving spring at the top of the die is recorded as the second stroke, wherein the first stroke is greater than the second stroke;

[0021] The driving spring at the top of the female die contacts the female die, drives the female die to close the male die, and presses the part of the die casting to be hot-processed;

[0022] The driving spring on the top of the pressing plate contacts the pressing plate, drives the pressing plate to close the mold with the middle plate, and presses the part to be hot-processed of the die-casting.

[0023] In one embodiment of the present invention, the step of providing heating channels on the concave die and the convex die to perform heat treatment on the die casting inside the die casting area includes:

[0024] A coil heating rod and a temperature sensor are arranged in the heating channel;

[0025] After the female mold and the male mold are closed, the temperature in the heating channel is heated to a preset temperature through the coil heating rod to process the part to be heat-processed of the die-casting.

[0026] Beneficial effects of the present invention: The present invention provides a hot processing device for automobile die castings and a processing method for automobile die castings. The present invention has high processing accuracy in the hot shaping process for die castings, and can ensure the product quality of the die castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Shown is a schematic structural diagram of an upper mold plate in a hot processing device for automobile die castings of the present invention.

[0028] Figure 2 Shown is a schematic structural diagram of a lower mold plate in a hot processing device for automotive die castings of the present invention.

[0029] Figure 3 Shown as the present invention Figure 1 Cross-sectional view of the middle pressure plate and the intermediate plate.

[0030] Figure 4 Shown as the present invention Figure 1 Cross-sectional view of the die and punch.

[0031] Figure 5 Shown is a schematic diagram of the steps of a method for processing an automobile die casting according to the present invention.

[0032] Figure 6 Shown as the present invention Figure 4 Schematic diagram of step S40 in FIG.

[0033] Figure 7 Shown as the present invention Figure 4 Schematic diagram of step S50 in FIG.

[0034] Figure 8Shown is a processing flow chart of an automobile die-casting part according to the present invention.

[0035] Component number description

[0036] 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; 60. Heating channel; 61. First path; 62. Second path; 63. Boundary distance; 70. Drive spring. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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.

[0040] See also Figures 1 to 8 The present invention provides a hot processing device and a processing method for automobile die castings, which can be applied to the hot shaping process of mechanical parts. For example, it can be applied to the automotive die castings after cooling treatment, and the dimensional deformation of the die castings needs to be hot-shaped. The present invention can improve the product performance of the parts, play a shaping role after the die casting parts are hot-shaped, and improve the production and processing efficiency of the die casting parts. The following is a detailed description through specific embodiments.

[0041] See also Figure 1 , Figure 2 , Figure 3 and Figure 4In one embodiment of the present invention, the present invention provides a hot working device for automotive die castings, which may include an upper die plate 10, a lower die plate 20, an upper die bottom plate 30 and a lower die bottom plate 40. Figure 3 As shown, the lower mold base plate 40 may be located at the bottom, 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 10, and the upper mold base plate 30 may be located at the top. The lower mold plate 20 may include an intermediate plate 21, and the number of the intermediate plate 21 is one. The upper mold plate 10 may include a press plate 11, and the number of the press plate 11 is one. Figure 4 As shown, the lower mold plate 20 may include a plurality of male molds 22, for example, the number of male molds 22 may be six. The plurality of male molds 22 may be located at the peripheral position of the middle plate 21. The upper mold plate 10 may include a plurality of female molds 12, for example, the number of female molds 12 may be six. The plurality of female molds 12 may be located at the peripheral position of the pressing plate 11. The pressing plate 11 corresponds to the middle plate 21, and the plurality of female molds 12 corresponds to the plurality of male molds 22, and a die casting area 50 may be formed between the female molds 12 and the male molds 22. The upper mold bottom plate 30 may be provided with a plurality of driving springs 70, and the plurality of driving springs may contact the pressing plate 11 and the female mold 12, and the driving springs 70 may press the pressing plate 11 and the female mold 12.

[0042] See also Figure 3 and Figure 4 In one embodiment of the present invention, for the multiple driving springs 70 on the upper die bottom plate 30, the working stroke of the driving spring 70 corresponding to the pressure plate 11 is the first stroke, and the working stroke of the driving spring 70 corresponding to the die 12 is the second stroke, and the first stroke is greater than the second stroke. The first stroke and the second stroke are set differently, and the die casting can be pre-clamped by the driving spring 70 corresponding to the second stroke, and then the die casting can be clamped again by the driving spring 70 corresponding to the first stroke, so as to achieve the fastening installation of the die casting. The driving spring 70 at the top of the pressure plate 11 is brought into contact with the pressure plate 11, and the pressure plate 11 is driven to close the mold with the middle plate 21, and the driving spring 70 at the top of the die 12 is brought into contact with the die 12, and the die 12 is driven to close the mold with the punch 22, and the part of the die casting to be hot-processed is pressed. After the die 12 and the punch 22 are closed, the temperature in the heating channel 60 is heated to a preset temperature through a coil heating rod, so that the part to be heat-formed for the die casting is heated to 250°C to 300°C for heat-forming process. The heat-forming process refers to plastic deformation and reconstruction of metal materials at high temperatures, and by controlling parameters such as temperature, deformation mode and speed, the metal materials obtain the desired shape and performance.

[0043] See also Figure 3 and Figure 4, in an embodiment of the present invention, a plurality of heating channels 60 may be formed on the female mold 12, and the plurality of heating channels 60 on the female mold 12 may be arranged along one side of the die-casting part area 50. A plurality of heating channels 60 may be formed on the male mold 22, and the plurality of heating channels 60 on the male mold 12 may be arranged along the other side of the die-casting part area 50. In the present invention, the upper template 10 and the lower template 20 are used as the heating fields, and coil heating rods and temperature sensors are arranged in the heating channels 60. By performing hot shaping processing on the integrated die-casting parts in the die-casting part area 50, the problem of part deformation due to cooling during processing is solved, and the quality of the die-casting product can be guaranteed.

[0044] Please refer to Figure 3 , in an embodiment of the present invention, the connection lines of adjacent heating channels 60 on the female mold 12 may 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 part area 50. The connection lines of adjacent heating channels 60 on the male mold 22 may 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 part area 50. The first path 61 and the second path 62 are corresponding to each other, so that the plurality of heating channels 60 can perform efficient hot shaping processing on 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 may be in the shape of "ji", and the shape of the second path 62 may 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 coil heating rods in the heating channels 60 can perform sufficient and efficient hot shaping processing on the die-castings in the die-casting part area 50. Along the direction of the arrangement path of the die-casting part area 50, the heating channels 60 on the female mold 12 and the heating channels 60 on the male mold 22 may be arranged alternately, which can ensure an efficient hot shaping heating effect. For example, along the direction of the arrangement path of the die-casting part area 50, for the heating channels 60 on the female mold 12 and the heating channels 60 on the male mold 22, they may be arranged alternately in a 10 mm distance interval.

[0045] Please refer to Figure 3In one embodiment of the present invention, the maximum size of the male mold 22 may be 300mm*300mm*300mm, and the maximum size of the female mold 12 may be 300mm*300mm*300mm. The thickness of the upper mold bottom plate 30 may be greater than or equal to 60mm, and the thickness of the lower mold bottom plate 40 may be greater than or equal to 60mm. In the female mold 12 and / or the male mold 22, the diameter of the heating channel 60 may be between 10mm and 15mm, for example, the diameter of the heating channel 60 may be 10mm, 12mm, 15mm, etc. In the female mold 12 and / or the male mold 22, the distance between adjacent heating channels 60 is between 20mm and 30mm, for example, the distance between adjacent heating channels 60 is 25mm. The heating channel 60 on the female mold 12 is at a distance 63 from the boundary of the female mold 12 of 10mm to 20mm, and the heating channel 60 on the male mold 22 is at a distance 63 from the boundary of the male mold 22 of 10mm to 20mm.

[0046] See also Figure 5 In one embodiment of the present invention, the present invention also proposes a processing method for automobile die castings, which may include the following steps.

[0047] 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.

[0048] Step S20: placing the die-casting to be processed on the middle plate and the punch.

[0049] 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.

[0050] Step S40: Install an upper mold base plate on the top of the upper mold plate, and provide a plurality of driving springs on the upper mold base plate so that the plurality of driving springs contact the pressing plate and the concave mold.

[0051] Step S50, opening heating channels on the die and the punch to perform heat treatment on the die casting inside the die casting area, wherein the heating channel on the die is arranged along one side of the die casting area, and the heating channel on the punch is arranged along the other side of the die casting area.

[0052] 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.

[0053] 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.

[0054] Step S20: placing the die-casting to be processed on the middle plate and the punch.

[0055] In one embodiment of the present invention, the die casting to be heat-formed is placed in the middle plate 21 and the punch 22 to facilitate the subsequent heat-formation process of the die casting.

[0056] 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.

[0057] 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.

[0058] Step S40: Install an upper mold base plate on the top of the upper mold plate, and provide a plurality of driving springs on the upper mold base plate so that the plurality of driving springs contact the pressing plate and the concave mold.

[0059] In one embodiment of the present invention, the upper mold base plate 30 can be installed on the top of the upper mold plate 20, and the upper mold base plate 30 can be located at the topmost position. A plurality of driving springs 70 can be provided on the upper mold base plate 30, and the plurality of driving springs can contact the pressing plate 11 and the die 12, and the driving springs 70 can press the pressing plate 11 and the die 12. For the plurality of driving springs 70 on the upper mold base plate 30, the working stroke of the driving spring 70 corresponding to the pressing plate 11 is the first stroke, and the working stroke of the driving spring 70 corresponding to the die 12 is the second stroke, and the first stroke is greater than the second stroke. The driving spring 70 at the top of the pressing plate 11 is brought into contact with the pressing plate 11, and the pressing plate 11 is driven to close the mold with the middle plate 21, and the non-hot-processed part of the die casting is pressed. The driving spring 70 at the top of the die 12 is brought into contact with the die 12, and the die 12 is driven to close the mold with the punch 22, and the part of the die casting to be hot-processed is pressed.

[0060] Step S50, opening heating channels on the die and the punch to perform heat treatment on the die casting inside the die casting area, wherein the heating channel on the die is arranged along one side of the die casting area, and the heating channel on the punch is arranged along the other side of the die casting area.

[0061] In one embodiment of the present invention, a plurality of heating channels 60 may be provided on the concave die 12, and the plurality of heating channels 60 on the concave die 12 may be arranged along one side of the die casting area 50. A plurality of heating channels 60 may be provided on the convex die 22, and the plurality of heating channels 60 on the convex die 22 may be arranged along the other side of the die casting area 50. In the present invention, the upper die plate 10 and the lower die plate 20 are used as the heating field, and a coil heating rod and a temperature sensor are arranged in the heating channel 60. By performing a heat shaping process on the integral die casting part in the die casting area 50, the problem of deformation of the part after cooling process is solved, and the quality of the die casting product can be ensured.

[0062] See also Figure 6 In one embodiment of the present invention, step S40 may include step S410, step S420 and step S430, and step S410 may be represented as recording the working stroke of the driving spring 70 at the top of the pressing plate 11 as the first stroke, and recording the working stroke of the driving spring 70 at the top of the die 12 as the second stroke, wherein the first stroke is greater than the second stroke. Step S420 may be represented as contacting the driving spring 70 at the top of the die 12 with the die 12, driving the die 12 to close the die with the punch 22, and pressing the part to be hot-processed of the die casting. Step S430 may be represented as contacting the driving spring 70 at the top of the pressing plate 11 with the pressing plate 11, driving the pressing plate 11 to close the die with the intermediate plate 21, and pressing the part to be hot-processed of the die casting.

[0063] See also Figure 7 In one embodiment of the present invention, step S50 may include step S510 and step S520, and step S510 may be represented by setting a coil heating rod and a temperature sensor in the heating channel 60. Step S520 may be represented by heating the temperature in the heating channel 60 to a preset temperature by the coil heating rod after the female mold 12 and the male mold 22 are closed, so as to process the part to be heat-processed of the die casting.

[0064] See also Figure 8In one embodiment of the present invention, the process flow chart of the one-piece die-casting parts may be: aluminum ingot batching, vacuum die-casting, in-mold cooling, heat shaping, plasma cutting, deburring, CNC machining, cleaning, inspection and packaging. After completing the plasma cutting of the die-casting, the robotic arm can grab the die-casting and transport it to the heat shaping equipment to perform heat shaping on the die-casting. During the heat shaping process, the area where the die-casting is deformed by more than 1 mm can be used as the working area for heat shaping, which can correspond to the area between the die 12 and the punch 22. The area where the die-casting is deformed by less than 1 mm is used as the working area for cold shaping, that is, no heat shaping is required, which can correspond to the area between the pressure plate 11 and the middle plate 21.

[0065] See also Figure 8 In one embodiment of the present invention, for the hot shaping process of the die casting, first, after the die casting is removed from the gate and the slag bag, it is placed on the convex mold 22 of the lower template 20 of the hot processing device. Secondly, the female mold 12 and the convex mold 22 of the hot processing device can be driven by a press or a special machine to close the mold. Since the second stroke of the driving spring 70 corresponding to the female mold 12 is small, the female mold 12 and the convex mold 22 are closed. In the process of closing the female mold 12 and the convex mold 22, since the first stroke of the pressing plate 11 corresponding to the driving spring 70 is large, the pressing plate 11 and the intermediate plate 21 are closed, and the hot shaping part of the die casting can be pressed. Secondly, when the female mold 12 and the convex mold 22 are in contact with each other, the press or the special machine stops running, the coil heating rod in the heating channel 60 starts working, and the hot processing device enters the heating state. Rapidly heat the part of the die casting to be hot-shaped to 250℃~300℃. Secondly, the coil heating rod in the heating channel 60 can be adjusted by using an integrated digital display controller to adjust and display the temperature in the heating channel 60. Secondly, after the temperature in the heating channel 60 meets the setting, the press or special machine can continue to move downward and close the mold, and the concave mold 12 and the convex mold 22 are blunted on the upper mold plate 10 and the lower mold plate 20 to complete the shaping of the area to be heat-shaped. Secondly, the die-casting at the position of the concave mold 12 and the convex mold 22 is shaped in a molten solid-liquid state, which avoids the cracking problem and ensures a higher dimensional accuracy. Then, the die-casting after the heat shaping process is taken out from the hot processing device by a manipulator and sent to the air cooling station for cooling through a conveyor belt.

[0066] In summary, the present invention proposes a hot processing device for automobile die-castings and a processing method for automobile die-castings, which can solve the deformation problem of one-piece die-castings using a direct water cooling process in a water cooling pool, avoid the cracking problem caused by a large shaping amount in a cold shaping process, have high shaping accuracy, and can ensure the quality of die-casting parts.

[0067] 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.

[0068] 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 hot working device for automobile die castings, characterized in that: include: A lower mold plate connected to the top of the lower mold bottom plate, the lower mold plate comprising an intermediate plate and a male mold; 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; as well as An upper die bottom plate is connected to the top of the upper die plate, and a plurality of driving springs are arranged on the upper die bottom plate, and the plurality of driving springs contact the pressing plate and the concave die; Wherein, a heating channel is provided on the concave mold, and a heating channel is provided on the convex mold.

2. The hot working device for automobile die castings according to claim 1, characterized in that: The heating channel on the die is arranged along one side of the die-casting area, and the heating channel on the punch is arranged along the other side of the die-casting area. The working stroke of the drive spring corresponding to the pressure plate is a first stroke, and the working stroke of the drive spring corresponding to the die is a second stroke. The first stroke is greater than the second stroke.

3. The hot working device for automobile die casting according to claim 1, characterized in that: The adjacent heating channels on the die are connected to form a first path, the shape of which is the same as the path arranged in the die casting area. The adjacent heating channels on the punch are connected to form a second path, the shape of which is the same as the path arranged in the die casting area.

4. The hot working device for automobile die castings according to claim 1, characterized in that: Along the direction of the die casting area arrangement path, the heating channels on the female die and the heating channels on the male die are arranged alternately.

5. The hot working device for automobile die castings according to claim 1, characterized in that: In the concave mold and / or the convex mold, the diameter of the heating channel is between 10 mm and 15 mm.

6. The hot working device for automobile die castings according to claim 1, characterized in that: In the concave mold and / or the convex mold, the distance between adjacent heating channels is between 20 mm and 30 mm.

7. The hot working device for automobile die castings according to claim 1, characterized in that: The distance between the heating channel on the concave mold and the boundary of the concave mold is between 10 mm and 20 mm, and the distance between the heating channel on the convex mold and the boundary of the convex mold is between 10 mm and 20 mm.

8. 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 processed on the intermediate plate and the punch; 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; An upper die bottom plate is installed on the top of the upper die plate, and a plurality of driving springs are arranged on the upper die bottom plate so that the plurality of driving springs contact the pressing plate and the concave die; as well as Heating channels are provided on the concave die and the convex die to perform heat treatment on the die casting inside the die casting area.

9. The method for processing automobile die castings according to claim 8, characterized in that: The step of making the plurality of driving springs contact the pressing plate and the concave die comprises: The working stroke of the driving spring at the top of the pressing plate is recorded as the first stroke, and the working stroke of the driving spring at the top of the die is recorded as the second stroke, wherein the first stroke is greater than the second stroke; The driving spring at the top of the die is brought into contact with the die, driving the die to close the punch, and pressing the part of the die casting to be hot-processed; The driving spring on the top of the pressing plate is brought into contact with the pressing plate, and the pressing plate is driven to close the mold with the middle plate to press the part to be hot-processed of the die-casting.

10. The method for processing automobile die castings according to claim 9, characterized in that: The step of providing heating channels on the concave die and the convex die to perform heat treatment on the die casting inside the die casting area comprises: A coil heating rod and a temperature sensor are arranged in the heating channel; After the female mold and the male mold are closed, the temperature in the heating channel is heated to a preset temperature through the coil heating rod to process the part to be heat-processed of the die-casting.

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