CN114850466B

CN114850466B - Automatic casting system for aluminum piston

Info

Publication number: CN114850466B
Application number: CN202210478480.7A
Authority: CN
Inventors: 张青松; 朱世明; 程从科; 蒋炬峰; 李国怀; 汪文杰
Original assignee: Anqing Atge Engineering Co ltd
Current assignee: Anqing Atge Engineering Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2023-04-11
Anticipated expiration: 2042-04-29
Also published as: CN114850466A

Abstract

The technical scheme of the application provides an automatic casting system for an aluminum piston, which comprises an aluminum water heat preservation furnace, casting equipment, a quenching device for quenching an aluminum piston casting blank and a riser cutting system for automatically cutting off a pouring riser of the aluminum piston casting blank; the automatic movement of aluminum water and aluminum piston casting blanks is realized through a pouring robot system and an aluminum piston transfer device, wherein the pouring robot system comprises a six-axis robot body, an additional shaft assembly arranged at the tail end of a robot of the six-axis robot body and an aluminum water container arranged on the additional shaft assembly; the aluminum piston transfer device comprises a guide rail and a mechanical arm which moves on the guide rail and is used for moving an aluminum piston casting blank. The application discloses automatic casting system of aluminium piston has realized the automatic operation of whole process that the aluminium piston casting process cut off from casting to the rising head, need almost not operator's intervention.

Description

Automatic casting system for aluminum piston

Technical Field

The invention relates to the technical field of casting equipment, in particular to an automatic casting system for an aluminum piston.

Background

The piston part in the automobile engine is the main component of the engine combustion chamber, and the internal energy of fuel combustion drives the piston to reciprocate by the work of gas expansion, and further pushes a cam shaft connected with the piston to rotate, so as to realize power output. The piston needs to repeatedly rub against the cylinder block during operation, while its head is directly exposed to the high-temperature and high-pressure gas environment in the combustion chamber, so that the engine piston needs to be wear-resistant and heat-resistant, and in addition, since the piston is a moving part, it is also needed to reduce the weight as much as possible in order to reduce the inertial impact. A way in the prior art to better solve the above technical problem is to develop and use aluminum cast pistons.

In the prior art, for example, an invention patent with publication number CN102962437A published on 3/13/2013 and named as "automatic piston pouring device and method" provides an automatic piston pouring device and method. The automatic piston casting device realizes robot substitution of a casting process, but also needs manual participation in auxiliary operation, and the patent does not relate to the treatment of a piston ring blank after casting. The automation degree is limited, and a large lifting space exists.

Disclosure of Invention

In view of the problem that the degree of automation that prior art exists is not high, this application provides an aluminium piston automatic casting system.

The technical scheme of this application provides an automatic casting system of aluminium piston, and this automatic casting system of aluminium piston is used for producing the aluminium piston casting blank, including aluminium water heat preservation stove, an at least casting equipment, be provided with the casting mould that is used for pouring the aluminium piston casting blank on the casting equipment, its characterized in that, the automatic casting system of aluminium piston still includes:

the quenching device comprises a quenching box and a lifting supporting plate; at least one quenching medium is contained in the quenching box; the lifting supporting plate is used for supporting the aluminum piston casting blank; the lifting supporting plate at least comprises a first working position and a second working position when in operation, wherein the first working position is positioned below the liquid level of a quenching medium in the quenching tank, so that an aluminum piston casting blank on the lifting supporting plate is immersed in the quenching medium when the quenching device is positioned at the first working position; the second working position is positioned above the liquid level of the quenching medium in the quenching tank;

the riser cutting system comprises a cutting device, a clamping and moving device and a carrying robot; the cutting device is provided with a power-driven cutting blade and is used for cutting off a pouring riser of an aluminum piston casting blank; the clamping and moving device is used for clamping the aluminum piston casting blank to move in a rotating plane of the cutting blade, so that the feeding and cutting-off of the aluminum piston casting blank are realized when the cutting blade rotates; the tail end of the robot of the transfer robot is provided with a clamping jaw for clamping the aluminum piston casting blank, and the clamping jaw is used for clamping the aluminum piston casting blank and sending the aluminum piston casting blank into the clamping and moving device;

the pouring robot system comprises a six-axis robot body, an additional shaft assembly and an aluminum water container, wherein the additional shaft assembly is arranged at the robot tail end of the six-axis robot body, the aluminum water container is arranged at one end, far away from the robot tail end, of the additional shaft assembly, the six-axis robot body is provided with a robot sixth axis located at the robot tail end, and the rotating shaft of the additional shaft assembly is perpendicular to the robot sixth axis;

the aluminum piston transfer device comprises a guide rail and a mechanical arm, wherein the guide rail is arranged above the casting equipment and passes through the upper part of the quenching device to one side of the riser cutting system, the mechanical arm moves on the guide rail, and a manipulator used for clamping the aluminum piston casting blank is arranged at one end, far away from the guide rail, of the mechanical arm.

Specifically, the arm include the fixed arm that the direction is fixed and with the one end swivelling joint's of keeping away from the guide rail of fixed arm lifing arm, the manipulator set up in keep away from on the lifing arm the one end of fixed arm.

Preferably, the riser cutting system is further provided with a pneumatic marking machine for marking marks on the aluminum piston casting blank, and the transfer robot is further used for clamping the aluminum piston casting blank from the clamping and moving device to a working position of the pneumatic marking machine.

Preferably, a liquid level sensing device is arranged on the additional shaft assembly and at least comprises a liquid level limiting sensing device for detecting that the opening of the aluminum water container is immersed below the liquid level and a liquid level contact sensing device for detecting that the bottom of the aluminum water container contacts the liquid level.

Preferably, the quenching box contains a first quenching medium and a second quenching medium which are not mutually soluble, and the lifting supporting plate has a third working position for immersing the aluminum piston casting blank in the first quenching medium and a fourth working position for immersing the aluminum piston casting blank in the second quenching medium during operation.

The utility model provides an automatic casting system of aluminium piston has realized that the aluminium piston casting process from the casting to the full process automation operation that the rising head cut off, has realized the automation process from the aluminium water to the aluminium piston blank, almost does not need operator's intervention.

Drawings

FIG. 1 is a schematic view of the working range of a robot;

fig. 2 is a schematic structural diagram of an aluminum piston casting blank 9 according to the present application;

FIG. 3 is a schematic general layout of the aluminum piston automated casting system of the present application;

FIG. 4 is a schematic structural view of a pouring robot system 5 of the automatic aluminum piston casting system of the present application;

FIG. 5 is a schematic structural view of a quenching apparatus 3 of the automatic aluminum piston casting system of the present application;

FIG. 6 is a schematic structural view showing another operating position of the quenching apparatus 3 of the automatic aluminum piston casting system of the present application;

fig. 7 is a schematic structural view of a feeder cutoff system 4 of the automatic aluminum piston casting system of the present application;

fig. 8 is a schematic layout view of the aluminum piston transfer device 6 of the automatic aluminum piston casting system of the present application;

fig. 9 is a schematic diagram of the aluminum piston transferring apparatus 6 of the automatic aluminum piston casting system according to the present application after the robot 63 is operated.

1: an aluminum water heat preservation furnace 2: a casting device 3: a quenching device 4: a riser cutting system 5: a casting robot system 6: an aluminum piston transfer device 9: an aluminum piston casting blank 21: a casting mold 31: a quenching box 32: a lifting supporting plate 41: a cutting device 42: a clamping moving device 43: a pneumatic marking machine 44: a carrying robot 45: a cutting system rack 51: a six-axis robot body 56: a robot tail end 59: a robot base 52: an additional shaft component 53: an aluminum water container 54: a liquid level sensing device 61: a guide rail 62: a mechanical arm 63: a mechanical arm 91: a casting body 92: a casting riser 3s1: a first working position 3s2: a second working position 3s3: a third working position 3s4: a fourth working position 411: a cutting piece 441: a clamping jaw 521: a lengthening support 522: a power box 523: a seventh shaft: a mounting base 541: a liquid level contact sensing device 542: a liquid level limiting sensing device 5s6: a robot sixth shaft fixing arm 621: a lifting arm: a turnover joint 6s1: a quenching device 6s2: a quenching position 6s2: a quenching connecting position

Detailed Description

The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, in this specification, the dimensional scale of the drawings does not represent the actual dimensional scale, and is only used for representing the relative position and connection relationship between the components, and the components with the same name or the same number represent similar or identical structures and are only used for illustrative purposes.

Here, a description will be first made of a part of nouns in the present application.

The robot end: for the multi-axis serial mechanical arm type robot used in the present application, one end of the robot is a robot base fixed on the mounting base 524, and the other end is a power head, and a working component for executing a function is mounted, so that the working component can move in a three-dimensional space under the multi-axis coordinated motion. The robot end 56 of the present application refers to the power head side of the robot for mounting the working components.

The working range is as follows: the working range in the application refers to the range that the robot can move through the coordination of all the shafts, so that the power head of the robot can reach in a three-dimensional space. The range is limited by the arm length of each section of the robot and the rotation angle range of each axis of the robot. The diagonal filled part in fig. 1 is a two-dimensional schematic of a typical working range of the robot, and the working range of the robot in three-dimensional space is obtained by rotating the area space shown in the figure by 360 degrees.

In the process of casting the aluminum piston, molten aluminum is poured into a cavity of a casting die, and an aluminum piston casting blank 9 is formed after the molten aluminum is solidified. As shown in fig. 2, the resulting aluminum piston billet 9 generally consists of a casting body 91 and a pouring head 92. The casting body 91 is the part that is needed to be left for subsequent finish machining and shaping to obtain the aluminum piston body, and the pouring riser 92 is the technological characteristic of the casting process and needs to be removed. When a lower core-pulling type casting mold is adopted in view of uniform cooling of the aluminum piston, the ingate is generally disposed at the bottom, thereby forming the pouring head 92 in the shape of an upper L as shown in fig. 1.

The utility model provides an automatic casting system of aluminium piston provides a full-automatic production line who obtains casting body 91 from the aluminium water pouring to the riser cutting. The production line realizes the automatic unmanned operation of the whole process of pouring, casting, demoulding, quenching and riser cutting in the aluminum piston casting. As shown in fig. 3, the automatic aluminum piston casting system of the present application includes an aluminum water holding furnace 1, at least one casting facility 2, a quenching device 3, a riser cutting system 4, a pouring robot system 5 for transferring a work (aluminum liquid, an aluminum piston casting blank 9, etc.), and an aluminum piston transferring device 6. In fig. 3, two casting machines 2 and associated quenching devices 3 and riser cutting systems 4 are provided, but it should be particularly described that, since the production timings of the processes performed by the casting machines 2, quenching devices 3, riser cutting systems 4, and casting robot systems 5 are different, the number of the respective systems can be set reasonably in consideration of line balance in order to maximize the production efficiency of the automatic production line, and the production timings of the respective processes in the systems are substantially the same, thereby reducing the influence of the bottleneck process. For clarity of illustration, the aluminum piston transfer device 6 is not shown in fig. 3, and reference may be made in particular to fig. 8 and 9 below.

The aluminum water holding furnace 1 is used for holding molten aluminum water and preserving heat to avoid solidification of the molten aluminum water, the casting equipment 2 is provided with a casting mold 21 for casting an aluminum piston casting blank 9, and the aluminum water holding furnace 1 and the casting mold 21 are both arranged in the working range of the casting robot system 5. As shown in fig. 4, the casting robot system 5 includes a six-axis robot body 51, an additional shaft assembly 52 provided at an end of the six-axis robot body 51, and an aluminum water container 53 provided on the additional shaft assembly 52, a robot end 56 of the six-axis robot body 51 has a robot sixth axis 5s6, and a rotation axis of the additional shaft assembly 52 is perpendicular to the robot sixth axis 5s6. One is that the aluminum water container 53 needs to be directly contacted with the high-temperature molten aluminum, and is not suitable for directly arranging the aluminum water container 53 at the end of the casting robot system 5, otherwise the sixth axis 5s6 of the robot will be directly contacted with the molten aluminum water, and mechanical interference will occur, and furthermore, since the scooping operation and the dumping operation have requirements on the motion orientation and the motion rotation axis, the sixth axis 5s6 of the robot will be occupied, and the actual working range is greatly reduced. The casting mold 21 is provided in the form of a lower core, leaving an area above the casting apparatus 2 as a movable space for the pouring robot system 5 and other movable parts.

In the embodiment of the present application, the six-axis robot body 51 is in the form of a six-axis serial robot arm, which is fixed at the bottom to a robot base 59, on the robot end 56 of which an additional axis assembly 52 is mounted. The additional shaft assembly 52 comprises an elongated bracket 521, one end of the elongated bracket 521 is fixed with the robot end 56 of the six-shaft robot body 51, and a power box 522 is fixedly arranged at the end. The power box 522 includes a servo motor therein, and a harmonic reducer coaxially mounted with the servo motor. A seventh shaft 523 is provided at the other end of the six-axis robot body 51, and a mounting seat 524 for installing the aluminum water container 53 is provided at a rotation end of the seventh shaft 523. An output shaft of the speed reducer of the power box 522 passes through the extension bracket 521 to connect and drive the seventh shaft 523 to rotate. This headstock 522 is used for driving seventh axle 523, because harmonic speed reducer ware wherein has characteristics small, that the precision is high, can guarantee to install smoothly at robot end 56, also can guarantee to carry out accurate control to the process of empting/ladling of aluminium water container 53.

As the pouring process proceeds, the molten aluminum level in the molten aluminum holding furnace 1 gradually decreases, so that the molten aluminum container 53 needs to automatically adapt to the decrease of the molten aluminum level when performing the scooping process, therefore, the liquid level sensing device 54 is disposed on the mounting seat 524 and in the same direction as the opening direction of the molten aluminum container 53, the liquid level sensing device 54 at least includes a liquid level limit sensing device 542 for detecting the immersion of the opening of the molten aluminum container 53 below the liquid level, and optionally a liquid level contact sensing device 541 for detecting the contact liquid level at the bottom of the molten aluminum container 53 may also be disposed. The sensor types of the liquid level limit sensing device 542 and the liquid level contact sensing device 541 can be selected according to the situation, and are generally any electrical sensor which triggers the resistance change of the sensor or the on-off of the circuit through contacting the page, such as metal conductors, carbon rods and other materials which are difficult to resist high temperature and have good electrical conductivity. Specifically, the trigger position of the liquid level contact sensing device 541 is set 0-5 mm below the bottom of the molten aluminum container 53 to detect the contact level of the bottom of the molten aluminum container 53, and the liquid level limit sensing device 542 is set 0-5 mm above the opening of the molten aluminum container 53 to detect the immersion level of the molten aluminum container 53. In the reasonable ladling process, after the bottom of the aluminum water container 53 is detected to contact the liquid level, the pouring robot system 5 is controlled to slow down and downwards probe the aluminum water, so that the aluminum water splashing caused by the too high speed is avoided, the tail end 56 of the robot and the additional shaft assembly 52 are polluted/damaged, and meanwhile, the waste caused by the aluminum water splashing is also avoided. After the opening of the molten aluminum container 53 is detected to be immersed below the liquid level, the pouring robot system 5 is controlled to stop downward detection, the molten aluminum container is kept at the current position for a proper time, and then the molten aluminum container is lifted up to keep the molten aluminum container 53 horizontal and moved to the pouring position.

Fig. 5 is a schematic diagram of a quenching apparatus 3 in the automatic aluminum piston casting system of the present application, which includes a quenching box 31 and a lifting and lowering plate 32, and the quenching box 31 contains a quenching medium, and the lifting and lowering plate 32 is configured to move up and down and is used for supporting an aluminum piston casting blank 9. Specifically, the aluminum piston casting blank 9 at least has two stop positions, namely a first working position 3s1 and a second working position 3s2, wherein the first working position 3s1 is located below the liquid level of the quenching medium in the quenching box 31, and the quenching medium can completely immerse the aluminum piston casting blank 9 to achieve the best quenching effect, and the second working position 3s2 is located above the liquid level of the quenching medium. In the quenching process, the lifting pallet 32 receives the aluminum piston casting blank 9 from the aluminum piston transfer device 6 at the second working position 3s 2. And then the casting blank is lowered to the first working position 3s1, the aluminum piston casting blank 9 is completely immersed by the quenching medium, after the aluminum piston casting blank 9 is rapidly cooled, the lifting support plate 32 returns to the second working position 3s2 again, and the aluminum piston casting blank 9 returns to the aluminum piston transfer device 6.

In addition, as shown in fig. 6, the material performance of the aluminum piston casting blank 9 is further optimized by controlling the quenching process of the aluminum piston casting blank 9, that is, in addition to the quenching process using the above-mentioned single-stage quenching, a multi-stage quenching process may be adopted in the present application. A third working position 3s3 and a fourth working position 3s4 are provided in the quenching tank 31 at a certain distance in the vertical direction. Meanwhile, a first quenching medium and a second quenching medium which are not mutually soluble, such as water and quenching oil, are used, the quenching media are naturally layered in the quenching box 31 according to density due to the fact that the quenching media are not mutually soluble, and the aluminum piston casting blank 9 is respectively immersed in the two quenching media at a third working position 3s3 and a fourth working position 3s4 through control over the volume and the using amount of the quenching media, so that graded quenching is achieved. The lifting supporting plate 32 is controlled to stay in each quenching medium for different time, so that the temperature of the aluminum piston casting blank 9 is reduced in a gradient manner, and the material performance after quenching is improved. It should be noted that the fact that the lifting and lowering plate 32 is disposed inside the quenching box 31 only means the position of the movable range of the lifting and lowering plate 32 in the quenching box 31 and the portion right above the quenching box 31, and does not mean that the lifting and lowering mechanism for driving the quenching box 31 must be disposed inside the quenching box 31, and fig. 5 only shows the arrangement of the lifting and lowering mechanism inside the quenching box 31. The quenching process of the aluminum piston casting blank 9 can be conveniently and accurately controlled by arranging the lifting support plate 32 and controlling the lifting motion of the lifting support plate 32, and the precise control of the quenching time is ensured.

Fig. 7 is a schematic view of a feeder cutting system 4 of the automatic aluminum piston casting system of the present application, the feeder cutting system 4 including a cutting device 41, a clamp moving device 42, and a transfer robot 44. The cutting device 41 is provided with a power-driven cutting blade 411, and the cutting blade 411 is used for cutting off the pouring riser 92 of the aluminum piston casting 9. Considering that the aluminum piston casting 9 in fig. 2 has two symmetrically-grown pouring risers 92, it is preferable to arrange the casting bodies 91 in two groups to realize one feeding to cut off the two pouring risers 92, thereby simplifying the working steps. The clamping and moving device 42 is used for clamping the aluminum piston casting blank 9 and can move in the rotating plane of the cutting blade 411, so that when the cutting blade 411 rotates, the aluminum piston casting blank 9 is fed to the direction of the cutting blade 411 to complete cutting; the transfer robot 44 is also a multi-axis serial mechanical arm robot, the base of which is fixed, and the end of which is provided with a clamping jaw 441, the clamping jaw 441 is used for performing the operation of grabbing the aluminum piston casting blank 9, and sending the aluminum piston casting blank 9 into the clamping and moving device 42 according to the preset orientation, so that the clamping and moving device 42 can reliably clamp the aluminum piston casting blank 9.

Considering the mutual cooperation among the cutting device 41, the clamping moving device 42 and the transfer robot 44, the three devices are integrated into a whole, and can be naturally integrated on a common cutting system frame 45, thereby facilitating the manufacture and assembly of the equipment. Specifically, the cutting device 41 is fixed on the rack, so that the clamping jaw 441 performs rotary motion in a plane which is perpendicular to the mounting surface and above the mounting surface, a guide rail is arranged on the cutting system rack 45 and below the projection of the clamping jaw 441, the clamping moving device 42 is arranged on the rack and performs translational motion along the guide rail, and the clamping moving device 42 is provided with a clamping jaw for clamping and fixing the aluminum piston casting blank 9. When the clamping and moving device 42 clamps the aluminum piston casting blank 9 and translates towards the direction of the clamping jaws 441, the root of the pouring riser 92 is gradually cut by the clamping jaws 441, when the preset position is reached, the aluminum piston casting blank 9 is completely cut off, the cut pouring riser 92 enters a waste frame, the clamping and moving device 42 carries the rest of the casting body 91 to retreat to the starting position, the casting body 91 is handed over to the clamping jaws 441 of the carrying robot 44, and the carrying robot 44 puts the casting body 91 into a turnover frame.

In addition, in consideration of product tracing, a pneumatic marking machine 43 may be additionally provided within the working range of the transfer robot 44 in the riser cutting system 4, and when the transfer robot 44 receives the casting body 91, the casting body 91 is clamped and moved to a marking station of the pneumatic marking machine 43, the posture is adjusted to enable the casting body 91 to form a correct marking position orientation, and then the pneumatic marking machine 43 is started to complete the marking tracing code on the casting body 91. After the pneumatic marking machine 43 imprints the trace-back information at the predetermined position of the casting body 91, the transfer robot 44 puts the casting body 91 having the trace-back information into the transfer rack again.

Fig. 8 is a schematic arrangement diagram of the aluminum piston transfer device 6 of the automatic aluminum piston casting system of the present application, and the aluminum piston transfer device 6 includes a guide rail 61 and a robot arm 62. The guide rail 61 passes through the upper part of the casting equipment 2, the upper part of the quenching device 3 and the side part of the feeder head cutting system 4 in sequence, and the mechanical arm 62 moves on the guide rail 61 in a translation mode. The robot arm 62 includes a fixing arm 621 near the guide rail 61, a lifting arm 622 rotatably coupled to a lower end of the fixing arm 621, and a robot 63 provided at an end of the lifting arm 622 remote from the fixing arm 621. The robot arm 62 is provided with two stop points, i.e., a mold pick-up position 6s1 and a quenching position 6s2, on the guide rail 61, and is located above the casting mold 21 and above the quenching apparatus 3, respectively.

After the casting equipment 2 finishes a casting process and demolding is finished, the mechanical arm 62 translates to a mold taking position 6s1 above the casting mold 21 along the guide rail 61, the lifting arm 622 descends, the mechanical arm 63 clamps the aluminum piston casting blank 9, the lifting arm 622 ascends, then the mechanical arm 62 translates to a quenching position 6s2 above the quenching device 3 along the guide rail 61, and after the lifting support plate 32 reaches the second working position 3s2 to support the aluminum piston casting blank 9, the mechanical arm 63 releases the aluminum piston casting blank 9, so that the aluminum piston casting blank 9 is transferred to the quenching device 3 from the casting mold 21.

As shown in fig. 9, after the aluminum piston cast slab 9 is quenched in the quenching apparatus 3, the lifting pallet 32 moves up to the second working position 3s2, the manipulator 63 grips the aluminum piston cast slab 9 again, the lifting arm 622 rotates 90 degrees to the riser cutting system 4 side to change the posture of the aluminum piston cast slab 9 from the vertical direction to the horizontal direction, the manipulator 63 enters the transfer position 6s3, the transfer robot 44 performs posture adjustment to move the clamping jaw 441 to the corresponding position, the aluminum piston cast slab 9 is transferred from the manipulator 63 to the clamping jaw 441, then the clamping jaw 441 moves to the departure position of the clamping moving apparatus 42 to transfer the aluminum piston cast slab 9 to the clamping moving apparatus 42, the clamping jaw 441 finishes the feeding and cutting operation at the clamping moving apparatus 42, retracts to the departure position, the clamping jaw 441 withdraws the cast slab body 91 from the clamping moving apparatus 42 again, and the cast slab 91 is transferred to the transfer stand after finishing the posture adjustment at the pneumatic marking machine 43.

The above description is only for the purpose of describing the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention are intended to fall within the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides an automatic casting system of aluminium piston, this automatic casting system of aluminium piston is used for producing aluminium piston casting blank (9), includes aluminium water holding furnace (1), an at least casting equipment (2), be provided with casting mould (21) that are used for watering aluminium piston casting blank (9) on the casting equipment (2), its characterized in that, automatic casting system of aluminium piston still includes: the quenching device (3), the quenching device (3) comprises a quenching box (31) and a lifting supporting plate (32); at least one quenching medium is contained in the quenching box (31); the lifting supporting plate (32) is used for supporting the aluminum piston casting blank (9); the lifting supporting plate (32) is at least provided with a first working position (3 s 1) and a second working position (3 s 2) when in operation, wherein the first working position (3 s 1) is below the liquid level of a quenching medium in the quenching box (31), so that an aluminum piston casting blank (9) on the lifting supporting plate (32) is immersed in the quenching medium when the quenching device (3) is located at the first working position (3 s 1); the second working position (3 s 2) is positioned above the liquid level of the quenching medium in the quenching box (31); a riser cutting system (4), wherein the riser cutting system (4) comprises a cutting device (41), a clamping and moving device (42) and a conveying robot (44); the cutting device (41) is provided with a power-driven cutting blade (411) for cutting off a pouring riser (92) of the aluminum piston casting blank (9); the clamping and moving device (42) is used for clamping the aluminum piston casting blank (9) to move in a rotating plane of the cutting blade (411), so that when the cutting blade (411) rotates, the aluminum piston casting blank (9) is fed and cut off; a clamping jaw (441) for clamping the aluminum piston casting blank (9) is arranged at the robot tail end of the carrying robot (44), and the clamping jaw (441) is used for clamping the aluminum piston casting blank (9) and sending the aluminum piston casting blank into the clamping and moving device (42); the pouring robot system (5) comprises a six-axis robot body (51), an additional shaft assembly (52) arranged at a robot tail end (56) of the six-axis robot body (51), and an aluminum water container (53) arranged at one end, far away from the robot tail end (56), of the additional shaft assembly (52), wherein the six-axis robot body (51) is provided with a robot sixth axis (5 s 6) at the robot tail end (56), and the rotating axis of the additional shaft assembly (52) is perpendicular to the robot sixth axis (5 s 6); the aluminum piston transfer device (6) comprises a guide rail (61) from the upper part of the casting equipment (2) to one side of the riser cutting system (4) through the upper part of the quenching device (3) and a mechanical arm (62) moving on the guide rail (61), and a manipulator (63) for clamping the aluminum piston casting blank (9) is arranged at one end, far away from the guide rail (61), of the mechanical arm (62);

the mechanical arm (62) comprises a fixed arm (621) fixed in the direction and a lifting arm (622) rotatably connected with one end, far away from the guide rail (61), of the fixed arm (621), and the mechanical arm (63) is arranged at one end, far away from the fixed arm (621), of the lifting arm (622);

the quenching box (31) contains a first quenching medium and a second quenching medium which are not mutually soluble, and the lifting supporting plate (32) has a third working position (3 s 3) for immersing the aluminum piston casting blank (9) in the first quenching medium and a fourth working position (3 s 4) for immersing the aluminum piston casting blank (9) in the second quenching medium when in operation.

2. The automatic aluminum piston casting system according to claim 1, wherein the riser-severing system (4) is further provided with a pneumatic marking machine (43) for marking marks on the aluminum piston billet (9), and the transfer robot (44) is further configured to pick up the aluminum piston billet (9) from the clamping and moving device (42) to a working position of the pneumatic marking machine (43).

3. The automatic aluminum piston casting system according to claim 1, wherein a liquid level sensing device (54) is arranged on the additional shaft assembly (52), and the liquid level sensing device (54) at least comprises a liquid level limit sensing device (542) for detecting that the opening of the aluminum water container (53) is immersed below the liquid level and a liquid level contact sensing device (541) for detecting that the bottom of the aluminum water container (53) contacts the liquid level.