Lightweight aluminum alloy hot stamping forming device and forming process

Abstract

The light-weight aluminum alloy hot stamping forming device comprises a machine body provided with a driving cylinder, a male die and a female die are arranged on the upper portion and the lower portion of the machine body respectively, the male die is installed at the output end of the driving cylinder, the driving cylinder is installed on a U-shaped frame of the machine body, and the light-weight aluminum alloy hot stamping forming device further comprises a stamping cleaning unit. And after each time of punching is finished, metal chips attached to the male die and the female die are automatically cleaned. According to the forming device, metal filing cleaning can be automatically conducted on the female die and the male die after each time of die casting, the working efficiency of the device is effectively improved, pneumatic cleaning is adopted to be matched with brush rod cleaning, the good cleaning effect on the female die and the male die is guaranteed, and meanwhile the metal filing is prevented from splashing all around and falling onto the female die over.

Description

Technical Field

[0001] The present invention relates to the technical field of die casting, and in particular to a lightweight aluminum alloy hot stamping forming device and a forming process. Background Art

[0002] Lightweight aluminum alloys generally use hot stamping technology (usually stamped by a die-casting machine). The use of hot stamping technology brings many significant benefits, which are mainly reflected in material properties, production efficiency, cost savings and product lightweighting. When stamping, the block of aluminum alloy needs to be heated before stamping. Heating the aluminum alloy has the following benefits: First, it can improve plasticity and formability; second, during the heating process, the microstructure of the aluminum alloy will change, such as grain refinement, phase change, etc. These changes help to improve the mechanical properties of the material such as strength and hardness; third, after heating, the material is easier to flow and fill the mold.

[0003] Since lightweight aluminum alloy hot stamping is carried out at high temperatures, lightweight materials such as aluminum alloys will become softer after heating, and their plasticity and ductility will increase. In this state, the material is more easily cut, torn or squeezed, thereby generating more metal chips. Moreover, at high temperatures, the friction and adhesion between the mold and the material are more obvious, which makes it easier for the material to adhere to the mold surface during the stamping process, and then generate metal chips during separation. The metal chips generated are attached to the punch and the die. The presence of the metal chips will cause the subsequent aluminum alloy stamping surface quality to decrease, the mold closing accuracy to decrease, and the wear to increase. Therefore, after the die-casting machine is die-casted for a period of time, it is usually necessary to stop the die-casting machine after every 5 to 8 die-castings to manually clean the metal chips of the punch and the die on the die-casting machine. Manually using an air gun or a brush to clean the punch and the die is more troublesome and affects the stamping efficiency. Therefore, the present application provides a lightweight aluminum alloy hot stamping forming device and forming process to meet the needs. Summary of the invention

[0004] The purpose of the present application is to provide a lightweight aluminum alloy hot stamping forming device and forming process, which is used to solve the technical problem in the prior art that manual cleaning of metal chips on the punch and die is required, which makes the operation more troublesome and affects the stamping efficiency.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a lightweight aluminum alloy hot stamping forming device, comprising a machine body equipped with a driving cylinder, a punch and a die are respectively arranged on the upper and lower parts of the machine body, the punch is installed at the output end of the driving cylinder, and the driving cylinder is installed on the U-shaped frame of the machine body, and also includes a stamping cleaning unit, which automatically cleans the metal chips on the punch and the die after each stamping is completed.

[0006] As a preferred implementation in this embodiment, the cleaning unit includes an upper cleaning unit and a lower cleaning unit, which clean metal chips from the punch and the die respectively; The upper cleaning unit comprises two groups of limit rods and two movable rods installed on both sides of the U-shaped frame, a first material receiving box is slidably arranged between the two limit rods through a first sliding ring, and a first cleaning brush rod is installed in the first material receiving box; The two movable rods are respectively arranged obliquely above the corresponding limit rods, one end of the two movable rods is rotatably connected to the U-shaped frame, and the other ends of the two movable rods are respectively provided with a second slip ring corresponding to the sliding sleeve, and the second slip ring is rotatably connected to the reciprocating nut through the rotating rod, and the reciprocating nut is installed on the reciprocating screw rod rotatably arranged on the outer wall of the U-shaped frame, and the upper end of the reciprocating screw rod is meshed and connected with one end of the mounting shaft rotatably arranged on the U-shaped frame through the bevel gear, and the other end of the mounting shaft is installed with a one-way gear, and the one-way gear is gear-connected with the toothed plate installed on the output shaft of the driving cylinder; A gravity ball is slidably arranged on the two movable rods, a U-shaped rod is rotatably arranged on the two gravity balls, and a through rod is fixed at the lower end of each U-shaped rod, and each of the two through rods slides through the side plate of the first receiving box; The lower cleaning unit comprises a plurality of the concave dies, a driving shaft rotatably arranged on the U-shaped frame, a plurality of lifting cylinders and a second receiving box, wherein the plurality of the concave dies are arranged on the outer wall of the mounting ring at equal intervals on the circumference, the mounting ring is mounted on the driving shaft, and the driving end of the driving shaft is connected to the output shaft of the driving motor; The plurality of jacking cylinders are all arranged on the driving shaft, the plurality of jacking cylinders correspond to the plurality of concave dies one by one, and the output ends of the jacking cylinders movably penetrate the corresponding concave dies; The second material receiving box is located directly below one of the concave dies, and a cleaning piece is installed in the inner cavity of the second material receiving box.

[0007] As a preferred implementation mode of this embodiment, it also includes a longitudinal reciprocating unit, which is used to drive the first cleaning brush rod to perform rapid back and forth reciprocating movement.

[0008] As a preferred implementation in this embodiment, the longitudinal reciprocating unit includes a longitudinal spring, a first semicircular contact block and a plurality of second semicircular contact blocks; Both ends of the first cleaning brush rod are slidably penetrated with the first material receiving box through a sliding column, the longitudinal spring is sleeved on one of the sliding columns, and the two ends of the longitudinal spring are respectively fixedly connected to the inner wall of the first material receiving box and the end of the first cleaning brush rod, the first semicircular contact block is fixedly installed on the end of the other sliding column passing through the first material receiving box, and a plurality of the second semicircular contact blocks are arranged in a straight line with equal spacing on the mounting rod, and the mounting rod is mounted on the U-shaped frame; A plurality of the second semicircular contact blocks are arranged corresponding to the male mold.

[0009] As a preferred implementation mode in this embodiment, it also includes a second cleaning brush rod and a lateral reciprocating unit, which is used to drive the second cleaning brush rod to perform rapid left and right reciprocating motion, and cooperate with the rapid forward and backward reciprocating motion of the first cleaning brush rod to effectively remove metal chips on the punch.

[0010] As a preferred implementation in this embodiment, the lateral reciprocating unit includes a lateral spring and two trapezoidal blocks; Both ends of the second cleaning brush rod are slidably connected to the inner wall of the first material receiving box through a slider, the second cleaning brush rod is connected to the first material receiving box through the transverse spring, and the two trapezoidal blocks are respectively installed on the opposite ends of the first cleaning brush rod and the second cleaning brush rod, and the inclined surfaces of the two trapezoidal blocks contact each other.

[0011] As a preferred implementation manner in this embodiment, it also includes a power-assisting unit for assisting in pushing the first receiving box to slide on the limiting rod.

[0012] As a preferred implementation in this embodiment, the power-assisting unit includes a plurality of first permanent magnets arranged obliquely and two second permanent magnets arranged obliquely; The plurality of first permanent magnets are divided into two groups, and the mounting rods are provided with two groups, which are respectively located on both sides of the first receiving box, and the two groups of the first permanent magnets are arranged in a straight line on the corresponding mounting rods, and the two groups of the first permanent magnets are arranged on opposite sides, and the inclination directions of the two groups of the first permanent magnets are opposite; Two groups of the second permanent magnets are respectively arranged on both sides of the first receiving box, and the inclined surfaces on the second permanent magnets are arranged parallel to the corresponding inclined surfaces on the first permanent magnets; The second permanent magnet 29 on the same side and the corresponding first permanent magnets 33 on the same side have the same magnetic poles at opposite ends.

[0013] A forming process of a lightweight aluminum alloy hot stamping forming device comprises the following steps: S1: placing the heated aluminum alloy block in the die 4, and controlling the driving cylinder 2 to work after completion; S2: The driving cylinder 2 drives the punch 3 to move downward for stamping. After the stamping is completed, the driving cylinder 2 returns to its original position. At this time, the gravity ball 17 drives the first receiving box 22 to move under the action of gravity and cleans the punch 3. At the same time, the mounting ring rotates and pushes the casting out of the die 4 through the lifting cylinder 9, and the cleaning piece 6 is used to clean the die 4.

[0014] In summary, the technical effects and advantages of the present invention are as follows: The present invention has a reasonable structure. The molding device can automatically clean the metal chips of the die and the punch after each die casting, effectively improving the working efficiency of the device. The pneumatic cleaning is combined with the brush rod cleaning to ensure a good cleaning effect on the die and the punch while preventing the metal chips from splashing around and falling onto the die directly above. In the present invention, a longitudinal reciprocating unit, a first cleaning brush rod, a transverse reciprocating unit and a second cleaning brush rod are provided, which can brush the stubborn metal chips on the punch from multiple directions, so that the metal chips can be cleaned more thoroughly; In the present invention, a power-assisting unit is provided, which has the effect of accelerating and slowing down the first receiving box, which is beneficial to enhancing the cleaning strength of the first cleaning brush rod and the second cleaning brush rod on the punch, and also prevents the first receiving box from colliding violently with the machine body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the partial rear view structure in the middle; Figure 3 for Figure 1 Schematic diagram of the partial front view structure; Figure 4 for Figure 3 Schematic diagram of the installation structure of the first receiving box; Figure 5 for Figure 4 A schematic diagram of the structure of the first receiving box in the middle viewed from above; Figure 6 for Figure 3 A schematic diagram of the structure of the first receiving box from above; Figure 7A diagram of the installation positions of the first permanent magnet and the second permanent magnet; Figure 8 for Figure 1 Schematic diagram of the installation ring structure.

[0017] In the figure: 1, machine body; 2, driving cylinder; 3, punch; 4, die; 5, second receiving box; 6, cleaning piece; 7, driving shaft; 8, mounting ring; 9, lifting cylinder; 10, tooth plate; 11, mounting shaft; 12, reciprocating screw rod; 13, reciprocating nut; 14, second slip ring; 15, umbrella gear; 16, movable rod; 17, gravity ball; 18, U-shaped rod; 19, through rod; 20, limit rod; 21, first slip ring; 22, first receiving box; 23, one-way gear; 24, mounting rod; 25, first cleaning brush rod; 26, longitudinal spring; 27, first semicircular contact block; 28, second semicircular contact block; 29, second permanent magnet; 30, second cleaning brush rod; 31, transverse spring; 32, trapezoidal block; 33, first permanent magnet; 34, conveyor belt. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example: Reference Figure 1 A lightweight aluminum alloy hot stamping forming device shown in the figure includes a body 1 equipped with a driving cylinder 2, a punch 3 and a die 4 are respectively arranged on the upper and lower parts of the body 1, the punch 3 is installed at the output end of the driving cylinder 2, and the driving cylinder 2 is installed on the U-shaped frame of the body 1, and also includes a stamping cleaning unit, which automatically cleans the metal chips on the punch 3 and the die 4 after each stamping is completed.

[0020] As a preferred implementation in this embodiment, Figure 1-3 and Figure 8 As shown, the cleaning unit includes an upper cleaning unit and a lower cleaning unit, which clean metal chips from the punch 3 and the die 4 respectively; The upper cleaning unit includes two groups of limit rods 20 and two movable rods 16 installed on both sides of the U-shaped frame. A first material receiving box 22 is slidably arranged between the two limit rods 20 through a first sliding ring 21. A first cleaning brush rod 25 is installed in the first material receiving box 22. Two movable rods 16 are respectively arranged obliquely above the corresponding limit rods 20, one end of the two movable rods 16 is rotatably connected to the U-shaped frame, and the other ends of the two movable rods 16 are respectively provided with a second slip ring 14 corresponding to the sliding sleeve, and the second slip ring 14 is rotatably connected to the reciprocating nut 13 through a rotating rod, and the reciprocating nut 13 is installed on the reciprocating screw rod 12 rotatably arranged on the outer wall of the U-shaped frame, and the upper end of the reciprocating screw rod 12 is meshed and connected with one end of the mounting shaft 11 rotatably arranged on the U-shaped frame through a bevel gear 15, and the other end of the mounting shaft 11 is installed with a one-way gear 23, and the one-way gear 23 is gear-engaged with the toothed plate 10 on the output shaft of the mounting drive cylinder 2; Gravity balls 17 are slidably arranged on the two movable rods 16, U-shaped rods 18 are rotatably arranged on the two gravity balls 17, and penetrating rods 19 are fixed at the lower ends of the U-shaped rods 18, and the two penetrating rods 19 are slidably arranged to penetrate the side plates of the first receiving box 22; The lower cleaning unit includes a plurality of concave dies 4, a driving shaft 7 rotatably arranged on a U-shaped frame, a plurality of lifting cylinders 9 and a second receiving box 5. The plurality of concave dies 4 are arranged on the outer wall of a mounting ring 8 at equal intervals in a circle. The mounting ring 8 is mounted on the driving shaft 7. The driving end of the driving shaft 7 is connected to the output shaft of the driving motor. A plurality of jacking cylinders 9 are arranged on the driving shaft 7, and the plurality of jacking cylinders 9 correspond to the plurality of concave dies 4 one by one, and the output ends of the jacking cylinders 9 movably penetrate the corresponding concave dies 4; The second material receiving box 5 is located directly below one of the concave molds 4 , and a cleaning piece 6 is installed in the inner cavity of the second material receiving box 5 .

[0021] When in use, the aluminum alloy block is placed in the die 4 located just below the punch 3, and the driving cylinder 2 is controlled to move downward for stamping. During the downward movement of the driving cylinder 2, although the toothed plate 10 is toothed with the one-way gear 23, the mounting shaft 11 cannot be driven to rotate by the one-way gear 23. After the aluminum alloy stamping is completed, the driving cylinder returns to its original position. At this time, the toothed plate 10 drives the mounting shaft 11 to rotate through the one-way gear 23, and drives the reciprocating screw rod 12 to rotate through the umbrella gear 15, and the right ends of the two movable rods 16 are rotated clockwise downward through the reciprocating nut 13, and finally the right end of the movable rod 16 is tilted downward. At this time, through the action of gravity, the two gravity balls 17 move downward from left to right on the downwardly tilted movable rod 16, and drive the first material receiving box 22 to move horizontally on the limiting rod 20. After the driving cylinder 2 returns to its original position, the first cleaning brush rod 25 on the first material receiving box 22 moves horizontally and contacts with the bristles thereon. The surface of the punch 3 contacts and brushes off the metal chips on the surface of the punch 3. The brushed off metal chips will fall into the first receiving box 22. Finally, the first receiving box 22 will move to the right side of the punch 3. During this process, the driving motor will cause the mounting ring 8 to rotate and cause the adjacent die 4 to move to the bottom of the punch 3 and stop. During this process, the die casting in the die 4 can be ejected by the jacking cylinder 9. After the rotation of the mounting ring 8 is completed, the cleaning part 6 cleans the die 4 with the opening facing downward, and the metal chips fall into the second receiving box 5. At the same time, during this period of time, the high-temperature aluminum alloy block is clamped by the clamping tool and placed in the uppermost die 4, and the cleaning of the punch 3 is also carried out during this period of time (avoiding extending the interval time between each stamping, and completing the cleaning of the punch 3 and the die 4 while keeping the existing interval time between each stamping unchanged). Automatic cleaning of the punch 3 and the die 4 can be achieved, avoiding manual cleaning and improving work efficiency. When the driving cylinder 2 moves downward again and returns to its original position, the right end of its movable rod 16 will rotate upward counterclockwise, and finally make the right end of the movable rod 16 tilt upward. At this time, the first material receiving box 22 moves from right to left, and finally stays on the left side of the punch 3. During the whole process, the right end of the movable rod 16 moves back and forth alternately up and down.

[0022] It should be noted that: 1. A conveyor belt 34 is set at the rear end of the body 1. The lifting cylinder 9 pushes the die casting in the die 4 out and drops it onto the conveyor belt 34. The conveyor belt 34 is raised to transport it to the next station, which is convenient for the unloading of high-temperature aluminum alloy castings; 2. The cleaning part 6 is set as a plurality of densely arranged air guns (which are connected to the air supply system and electrically connected to the controller). The metal chips on the die 4 are cleaned by spraying high-pressure gas from the air gun nozzle. Compared with the use of a brush, pneumatic cleaning is more thorough, and the punch 3 can only be cleaned by the first cleaning rod 25 with bristles. If pneumatic cleaning is used, it is easy to cause metal chips to splash around and fall onto the die 4 just above (affecting the subsequent quality of the finished product). The first cleaning rod 25 with bristles is used for cleaning, and its cleaning is relatively gentle and not easy to cause metal chips to fly around. At the same time, it can also meet the cleaning needs of the punch 3; 3. The driving cylinder 2, the lifting cylinder 9, and the driving motor are all electrically connected to the controller; 4. Using heavy The gravity of the force ball 17 causes the first material receiving box 22 to move to clean the punch 3, which can save electric energy and also avoid introducing a new driving source (which is driven by the original driving cylinder 2 to drive the movable rod 16 to tilt); Fifth, when the right end of the movable rod 16 is tilted downward, the angle between the inclination angle and the horizontal plane is consistent with the angle between the right end of the movable rod 16 and the horizontal plane when it is tilted upward, and the angle is maintained between 32° and 38°. If the angle is too small, the first material receiving box 22 cannot quickly obtain a sufficiently large kinetic energy, thereby reducing the cleaning effect on the punch 4 and prolonging the cleaning time; when the angle is too large, the movement speed of the first material receiving box 22 will increase rapidly, so that the first cleaning brush rod 25 quickly passes through the punch 4, which is easy to cause metal chips to splash, and the metal chips are easy to fall onto the lower die 4; Sixth, the rod body of the first cleaning brush rod 25 is provided with a plurality of rectangular through holes, through which metal chips can fall into the material receiving box to prevent metal chips from accumulating in the bristles.

[0023] As a preferred implementation mode of this embodiment, it also includes a longitudinal reciprocating unit for driving the first cleaning brush rod 25 to perform rapid back and forth reciprocating motion.

[0024] The rapid back-and-forth movement of the first cleaning brush rod 25 is conducive to brushing off the stubborn metal chips on the punch 3.

[0025] As a preferred implementation in this embodiment, Figure 4-6 As shown, the longitudinal reciprocating unit includes a longitudinal spring 26, a first semicircular contact block 27 and a plurality of second semicircular contact blocks 28; Both ends of the first cleaning brush rod 25 are slidably penetrated through the first material receiving box 22 through a sliding column, a longitudinal spring 26 is sleeved on one of the sliding columns, and both ends of the longitudinal spring 26 are fixedly connected to the inner wall of the first material receiving box 22 and the end of the first cleaning brush rod 25, respectively. A first semicircular contact block 27 is fixedly installed at the end of another sliding column penetrating the first material receiving box 22, and a plurality of second semicircular contact blocks 28 are arranged in a straight line with equal spacing on the mounting rod 24, and the mounting rod 24 is mounted on the U-shaped frame; A plurality of second semicircular contact blocks 28 are arranged corresponding to the punch 3 .

[0026] When the first material receiving box 22 moves laterally on the limiting rod 20, when the bristles of the first cleaning brush rod 26 just start to contact with the punch 3, its first semicircular contact block 27 contacts with the second semicircular contact block 28, cooperating with the reset movement of the longitudinal spring 26, so that the first cleaning brush rod 26 moves back and forth rapidly, so that the bristles brush the punch 3 back and forth. When the bristles contact and separate from the punch 3, the first cleaning brush rod 26 stops moving back and forth.

[0027] It should be noted that the second semicircular contact block 28 is only provided at a position corresponding to the punch 3 , so that the first receiving box 22 can obtain sufficiently large kinetic energy driven by the gravity ball 17 in the early stage to complete the cleaning of the punch 3 .

[0028] As a preferred implementation mode in this embodiment, it also includes a second cleaning brush rod 30 and a lateral reciprocating unit, which is used to drive the second cleaning brush rod 30 to perform rapid left and right reciprocating motion, and cooperate with the rapid forward and backward reciprocating motion of the first cleaning brush rod 25 to effectively remove metal chips on the punch 3.

[0029] As a preferred implementation in this embodiment, Figure 4-6 As shown, the transverse reciprocating unit includes a transverse spring 31 and two trapezoidal blocks 32; Both ends of the second cleaning brush rod 30 are slidably connected to the inner wall of the first material receiving box 22 through sliders, and the second cleaning brush rod 30 is connected to the first material receiving box 22 through a transverse spring 31. Two trapezoidal blocks 32 are respectively installed on the opposite ends of the first cleaning brush rod 25 and the second cleaning brush rod 30, and the inclined surfaces of the two trapezoidal blocks 32 contact each other.

[0030] When the first cleaning brush rod 25 moves back and forth, the second cleaning brush rod 30 makes a rapid left and right reciprocating motion through the squeezing force between the inclined surfaces of the two trapezoidal blocks 32 and the reset cooperation of the transverse spring 31. In conjunction with the rapid forward and backward movement of the first cleaning brush rod 25, the stubborn metal chips on the punch 3 can be brushed from multiple directions, making the metal chips cleaned more thoroughly.

[0031] It should be noted that multiple bristle groups are arranged in rows on the first cleaning brush rod 25 and the second cleaning brush rod 30. The closer to the middle, the longer the length of the bristle group. Since the surface of the punch 3 is uneven, such a design can greatly reduce the resistance of the punch 3 to the moving first cleaning brush rod 25 and the second cleaning brush rod 30 (avoiding too fast brushing intensity) and can also achieve comprehensive cleaning of the punch.

[0032] As a preferred implementation manner in this embodiment, a power assist unit is further included to assist in pushing the first receiving box 22 to slide on the limiting rod 20 .

[0033] As a preferred implementation in this embodiment, Figure 5 and Figure 7 As shown, the power-assisting unit includes a plurality of first permanent magnets 33 arranged obliquely and two second permanent magnets 29 arranged obliquely; The plurality of first permanent magnets 33 are divided into two groups. The mounting rod 24 is provided with two groups, which are respectively located on both sides of the first receiving box 22. The two groups of first permanent magnets 33 are arranged in a straight line on the corresponding mounting rods 24. The two groups of first permanent magnets 33 are arranged on different sides, and the inclination directions of the two groups of first permanent magnets 33 are opposite. Two groups of second permanent magnets 29 are respectively arranged on both sides of the first receiving box 22, and the inclined surfaces on the second permanent magnets 29 are arranged parallel to the inclined surfaces on the corresponding first permanent magnets 33; The second permanent magnet 29 on the same side and the corresponding first permanent magnets 33 on the same side have the same magnetic poles at opposite ends.

[0034] When the first material receiving box 22 moves from left to right, and when the second permanent magnet 29 at the front end passes through the first permanent magnet 33, the first material receiving box 22 is accelerated by the magnetic repulsion (which is beneficial to enhancing the cleaning strength of the first cleaning brush rod 25 and the second cleaning brush rod 30 on the punch 3, and is beneficial to the thorough cleaning of metal chips on the punch 3). When the first cleaning brush rod 25 contacts the punch 3, the magnetic assistance acceleration ends. After the first cleaning brush rod 25 passes over the punch 3, the first material receiving box 22 is decelerated by the cooperation of the first permanent magnet 33 and the second permanent magnet 29 arranged at the rear end to prevent the first material receiving box 22 from colliding violently with the machine body 1. When the first material receiving box 22 moves from right to left, the cooperation of the first permanent magnet 33 and the second permanent magnet 29 arranged at the rear end generates a repulsive force to assist the first material receiving box 22, and the cooperation of the first permanent magnet 33 and the second permanent magnet 29 arranged at the front end generates a repulsive force to slow down the first material receiving box 22.

[0035] It should be noted that the first permanent magnet 33 and the second permanent magnet 29 are both arranged in a magnetic shield, and the upper end of the first permanent magnet 33 and the lower end of the second permanent magnet 29 are exposed to the air. The magnetic shield prevents magnetic field interference.

[0036] A forming process of a lightweight aluminum alloy hot stamping forming device comprises the following steps: S1: placing the heated aluminum alloy block in the die 4, and controlling the driving cylinder 2 to work after completion; S2: The driving cylinder 2 drives the punch 3 to move downward for stamping. After the stamping is completed, the driving cylinder 2 returns to its original position. At this time, the gravity ball 17 drives the first receiving box 22 to move under the action of gravity and cleans the punch 3. At the same time, the mounting ring rotates and pushes the casting out of the die 4 through the lifting cylinder 9, and the cleaning piece 6 is used to clean the die 4.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lightweight aluminum alloy hot stamping forming device, comprising a body (1) equipped with a driving cylinder (2), wherein a punch (3) and a die (4) are respectively arranged on the body (1) in an upper and lower position, wherein the punch (3) is mounted on the output end of the driving cylinder (2), and the driving cylinder (2) is mounted on a U-shaped frame of the body (1), characterized in that: It also comprises a stamping cleaning unit, which automatically cleans the metal chips on the punch (3) and the die (4) after each stamping is completed.

2. A lightweight aluminum alloy hot stamping forming device and forming process according to claim 1, characterized in that: The cleaning unit comprises an upper cleaning unit and a lower cleaning unit, which respectively clean metal chips from the punch (3) and the die (4); The upper cleaning unit comprises two groups of limit rods (20) installed on both sides of the U-shaped frame and two movable rods (16); a first material receiving box (22) is slidably arranged between the two limit rods (20) via a first sliding ring (21); a first cleaning brush rod (25) is installed in the first material receiving box (22); The two movable rods (16) are respectively arranged obliquely above the corresponding limit rods (20), one end of the two movable rods (16) is rotatably connected to the U-shaped frame, and the other ends of the two movable rods (16) are each provided with a second slip ring (14) corresponding to the sliding sleeve, and the second slip ring (14) is rotatably connected to the reciprocating nut (13) through a rotating rod, and the reciprocating nut (13) is installed on a reciprocating screw rod (12) rotatably arranged on the outer wall of the U-shaped frame, and the upper end of the reciprocating screw rod (12) is meshedly connected with one end of a mounting shaft (11) rotatably arranged on the U-shaped frame through a bevel gear (15), and the other end of the mounting shaft (11) is installed with a one-way gear (23), and the one-way gear (23) is gear-connected with a toothed plate (10) installed on the output shaft of the driving cylinder (2); A gravity ball (17) is slidably provided on the two movable rods (16), a U-shaped rod (18) is rotatably provided on the two gravity balls (17), and a penetration rod (19) is fixed at the lower end of each U-shaped rod (18), and the two penetration rods (19) are slidably provided to penetrate the side plate of the first material receiving box (22); The lower cleaning unit comprises a plurality of the concave dies (4), a driving shaft (7) rotatably arranged on the U-shaped frame, a plurality of lifting cylinders (9) and a second material receiving box (5), wherein the plurality of the concave dies (4) are arranged at equal intervals on the outer wall of a mounting ring (8) in a circumferential manner, the mounting ring (8) is mounted on the driving shaft (7), and the driving end of the driving shaft (7) is connected to the output shaft of a driving motor; The plurality of lifting cylinders (9) are all arranged on the driving shaft (7), the plurality of lifting cylinders (9) correspond one-to-one to the plurality of concave dies (4), and the output ends of the lifting cylinders (9) movably penetrate the corresponding concave dies (4); The second material receiving box (5) is located directly below one of the concave dies (4), and a cleaning piece (6) is installed in the inner cavity of the second material receiving box (5).

3. A lightweight aluminum alloy hot stamping forming device according to claim 2, characterized in that: It also comprises a longitudinal reciprocating unit, which is used to drive the first cleaning brush rod (25) to perform rapid back and forth reciprocating motion.

4. A lightweight aluminum alloy hot stamping forming device according to claim 3, characterized in that: The longitudinal reciprocating unit comprises a longitudinal spring (26), a first semicircular contact block (27) and a plurality of second semicircular contact blocks (28); Both ends of the first cleaning brush rod (25) are slidably connected with the first material receiving box (22) through a sliding column, the longitudinal spring (26) is sleeved on one of the sliding columns, and the two ends of the longitudinal spring (26) are respectively fixedly connected to the inner wall of the first material receiving box (22) and the end of the first cleaning brush rod (25), the first semicircular contact block (27) is fixedly mounted on the end of another sliding column passing through the first material receiving box (22), and a plurality of the second semicircular contact blocks (28) are arranged in a straight line at equal intervals on the mounting rod (24), and the mounting rod (24) is mounted on the U-shaped frame; A plurality of the second semicircular contact blocks (28) are arranged corresponding to the male mold (3).

5. A lightweight aluminum alloy hot stamping forming device according to claim 4, characterized in that: It also comprises a second cleaning brush rod (30) and a transverse reciprocating unit, which are used to drive the second cleaning brush rod (30) to perform rapid left-right reciprocating motion, and cooperate with the rapid forward-backward reciprocating motion of the first cleaning brush rod (25), so as to effectively remove metal chips attached to the punch (3).

6. A lightweight aluminum alloy hot stamping forming device according to claim 5, characterized in that: The lateral reciprocating unit comprises a lateral spring (31) and two trapezoidal blocks (32); Both ends of the second cleaning brush rod (30) are slidably connected to the inner wall of the first material receiving box (22) via a sliding block, the second cleaning brush rod (30) is connected to the first material receiving box (22) via the transverse spring (31), and the two trapezoidal blocks (32) are respectively mounted on opposite ends of the first cleaning brush rod (25) and the second cleaning brush rod (30), and the inclined surfaces of the two trapezoidal blocks (32) are in contact with each other.

7. The lightweight aluminum alloy hot stamping forming device according to claim 3, characterized in that: It also includes a power-assisting unit for assisting in pushing the first material receiving box (22) to slide on the limiting rod (20).

8. The lightweight aluminum alloy hot stamping forming device according to claim 7, characterized in that: The power-assisting unit comprises a plurality of first permanent magnets (33) arranged obliquely and two second permanent magnets (29) arranged obliquely; The plurality of first permanent magnets (33) are divided into two groups, the mounting rod (24) is provided with two groups, and is respectively located on two sides of the first material receiving box (22), the two groups of first permanent magnets (33) are arranged in a straight line on the corresponding mounting rods (24), the two groups of first permanent magnets (33) are arranged on opposite sides, and the inclination directions of the two groups of first permanent magnets (33) are opposite; Two groups of the second permanent magnets (29) are respectively arranged on two sides of the first material receiving box (22), and the inclined surfaces on the second permanent magnets (29) are arranged parallel to the corresponding inclined surfaces on the first permanent magnets (33); The second permanent magnet (29) on the same side and the corresponding plurality of first permanent magnets (33) on the same side have the same end magnetic poles.

9. A forming process of a lightweight aluminum alloy hot stamping forming device, characterized in that: The following steps are included: S1: placing the heated aluminum alloy block in the concave die (4), and after completion, controlling the driving cylinder (2) to work; S2: The driving cylinder (2) drives the punch (3) to move downward to perform stamping. After the stamping is completed, the driving cylinder (2) returns to its original position. At this time, the gravity ball (17) drives the first receiving box (22) to move under the action of gravity and cleans the punch (3). At the same time, the mounting ring rotates and pushes the casting out of the die (4) through the lifting cylinder (9), and the cleaning piece (6) is used to clean the die (4).

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