Local hot-pressing shaping device and method for large aluminum alloy thin-wall die casting

Abstract

The local hot-press shaping device comprises conveying mechanisms, a hot-press shaping mechanism, a cooling mechanism and a supporting table, a product to be machined is installed on the supporting table, the conveying mechanisms are arranged on the two sides of the hot-press shaping mechanism, and a first sliding rail is installed on the supporting table; the first sliding rail sequentially penetrates through the hot-pressing shaping mechanism and the cooling mechanism. Sliding wheels are arranged at the lower end of the conveying mechanism, the sliding wheels are in sliding fit with the first sliding rails, the conveying mechanism conveys products into the hot-press shaping mechanism, the hot-press shaping mechanism conducts hot-press shaping on the whole products, the conveying mechanism takes the products out of the hot-press shaping mechanism and conveys the products to the cooling mechanism after hot-press shaping is completed, and the products are cooled through the cooling mechanism. The product is detected; sliding wheels arranged at the lower end of the conveying mechanism are slidably connected with a first sliding rail, so that castings are convenient to convey; a to-be-machined product is machined in the hot-pressing shaping mechanism, and hot-pressing shaping can be conducted on different parts at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of hot pressing and shaping of thin-walled castings, and particularly relates to a local hot pressing and shaping device and method for large thin-walled aluminum alloy die castings. Background Art

[0002] Due to the different distributions of the structural reinforcing ribs of large thin-walled die castings, the cooling areas and volumes on the front and back sides are different, resulting in different cooling rates, which causes a tendency for the overall die casting to bend and deform towards the back. The cumulative deformation presents a large deformation problem at the edge end. At the same time, this overall deformation generates local stress concentration, which will reduce the service life of the casting (taking the dragonfly bracket as an example). The deformation of the dragonfly bracket shows a distribution phenomenon where the main trunk part has no deformation and the six branch parts have slight deformation. For parts with different deformation degrees of the casting, performing the same heating temperature and pressure shaping process will cause energy waste for the parts that do not need shaping. Generally, the casting has a large size and heavy mass, making it inconvenient to feed. And when the hot pressing and shaping is completed, the temperature of the casting is relatively high, and it is also difficult to take the casting. Summary of the Invention

[0003] Aiming at the deficiencies and defects of the prior art, a local hot pressing and shaping device and method for large thin-walled aluminum alloy die castings are provided. To achieve the purpose of facilitating the transportation of the casting and enabling simultaneous hot pressing and shaping of different parts, the present invention provides the following technical solutions.

[0004] A local hot pressing and shaping device for large thin-walled aluminum alloy die castings includes a transportation mechanism, a hot pressing and shaping mechanism, a cooling mechanism, and a support table. The product to be processed is installed on the support table. The transportation mechanism is arranged on both sides of the hot pressing and shaping mechanism. A first slide rail is installed on the support table, and the first slide rail sequentially passes through the hot pressing and shaping mechanism and the cooling mechanism. A sliding wheel is arranged at the lower end of the transportation mechanism, and the sliding wheel is slidably matched with the first slide rail. The transportation mechanism transports the product into the hot pressing and shaping mechanism. The hot pressing and shaping mechanism performs hot pressing and shaping on the whole product. After completion, the transportation mechanism takes out the product from the hot pressing and shaping mechanism and transports it to the cooling mechanism. After cooling by the cooling mechanism, the product is inspected.

[0005] Compared with the prior art, the present invention realizes the transportation of the product to be processed through the sliding connection between the sliding wheel arranged at the lower end of the transportation mechanism and the first slide rail, facilitating the transportation of the casting. The whole product to be processed is processed in the hot pressing and shaping mechanism, which can achieve the purpose of simultaneously performing hot pressing and shaping on different parts.

[0006] Furthermore, the hot pressing and shaping mechanism includes a workbench, on which a guiding column is arranged. At one end of the guiding column away from the workbench, a sliding beam is arranged. At the lower end of the sliding beam, an upper shaping module is arranged. On the upper end surface of the workbench, a lower shaping module is fixedly arranged. A processing station is formed between the upper shaping module and the lower shaping module, and a laser sensor is arranged at the processing station. An oil press is arranged at the upper end of the sliding beam, and the oil press drives the sliding beam to move up and down on the guiding column. When the upper shaping module and the lower shaping module are closed, the product is subjected to hot pressing and shaping operations at the processing station. And shielding plates are arranged on both sides of the processing station.

[0007] With the above improvements, the hot pressing and shaping mechanism includes a workbench, on which a guiding column is arranged. At one end of the guiding column away from the workbench, a sliding beam is arranged, and the sliding beam can slide up and down on the guiding column. The guiding column plays a guiding role in the up and down sliding of the sliding beam. A laser sensor is arranged at the processing station, and the laser sensor can detect whether the product is placed at the processing station. The oil press can provide a power source for the sliding beam. The shielding plates arranged on both sides of the processing station can prevent the rapid dissipation of heat during processing and can play a blocking role.

[0008] Furthermore, the upper shaping module includes a first cold shaping block and a first hot shaping block. The first cold shaping block is arranged in the central area of the upper shaping module. Two first hot shaping blocks are arranged on two opposite sides of the first cold shaping block, and four first hot shaping blocks are arranged on the other two opposite sides. The lower shaping module includes a second cold shaping block and a second hot shaping block. The second cold shaping block is arranged in the central area of the lower shaping module. Two second hot shaping blocks are arranged on two opposite sides of the second cold shaping block, and four second hot shaping blocks are arranged on the other two opposite sides. Heat insulation plates cover the side surfaces around the first hot shaping block and the second hot shaping block.

[0009] With the above improvements, the upper shaping module includes a first cold shaping block and a first hot shaping block. The first cold shaping block is arranged in the central area of the upper shaping module, and the first hot shaping blocks are arranged around the first cold shaping block. The lower shaping module includes a second cold shaping block and a second hot shaping block. The second cold shaping block is arranged in the central area of the lower shaping module, and the second hot shaping blocks are arranged around the second cold shaping block, which can perform the same heating temperature and pressure shaping process on parts of the product with different deformation degrees. Performing this process on parts that do not require shaping will cause energy waste. Heat insulation plates cover the side surfaces around the first hot shaping block and the second hot shaping block, which can prevent heat loss.

[0010] Further, a number of limiting columns are provided at the upper end of the lower shaping module, and a number of limiting sleeves are provided at the lower end of the upper shaping module. When the limiting columns are completely inserted into the limiting sleeves, the upper shaping module and the lower shaping module complete the mold closing, and a safety padlock is fixedly installed on the upper shaping module.

[0011] Through the above improvements, a number of limiting sleeves are provided at the lower end of the upper shaping module, and a number of limiting columns are provided at the upper end of the lower shaping module. When the limiting columns are completely inserted into the limiting sleeves, the upper shaping module and the lower shaping module complete the mold closing, which can play a role in limiting the mold closing of the upper shaping block and the lower shaping block; and a safety padlock is fixedly installed on the upper shaping module, and the safety padlock can play a role in protecting the product.

[0012] Further, a feeding station is formed between the support table and the conveying mechanism. The support table includes a second slide rail and a connecting frame. A positioning block is provided on the connecting frame. The product is arranged on the connecting frame through the positioning block. A sliding block is fixedly connected to the lower end of the connecting frame, and the sliding block is slidably connected to the second slide rail. The connecting frame transports the product to the feeding station.

[0013] Through the above improvements, a feeding station is formed between the support table and the conveying mechanism. The support table includes a second slide rail and a connecting frame. Through the second slide rail and the sliding block provided at the lower end of the connecting frame, it is convenient to transport the product after loading to the feeding station, facilitating the subsequent grasping by the conveying mechanism.

[0014] Further, the feeding mechanism includes a machine frame, an upper fixing plate and a lower fixing plate. The upper fixing plate and the lower fixing plate are fixedly connected to the machine frame through guide columns and guide sleeves. A cylinder is provided on one side of the upper fixing plate away from the support table, and a number of suction cup members are provided on one side of the lower fixing plate close to the support table. The cylinder drives the suction cup members to move up and down through the guide columns and guide sleeves to suck the product.

[0015] Through the above improvements, a cylinder is provided on one side of the upper fixing plate away from the support table. The cylinder provides a power source for grasping the product. The suction cup members move up and down driven by the cylinder. When the suction cup members contact the product, they can suck the product to achieve the grasping of the product and facilitate transportation.

[0016] Further, a motor and a number of sliding blocks are provided on the lower fixing plate. When the suction cup members suck the product, the motor drives the sliding blocks to clamp the product.

[0017] Through the above improvements, a motor and a number of sliding blocks are provided on the lower fixing plate. When the suction cup members suck the product, the sliding blocks clamp the product driven by the motor to further fix the product and prevent it from falling during transportation.

[0018] Furthermore, a cooling station is formed between the cooling mechanism and the conveying mechanism. The cooling mechanism includes a continuously arranged first cooling rack and a second cooling rack. The first slide rail abuts against the upper end surfaces of the first cooling rack and the second cooling rack respectively. A first workpiece support for placing the product is installed at the upper end of the first cooling rack. A number of first cooling fans are installed inside the first cooling support. A second workpiece support for placing the product is installed at the upper end of the second cooling rack. A number of second cooling fans are installed inside the second cooling support.

[0019] Through the above improvements, the cooling mechanism includes a continuously arranged first cooling rack and a second cooling rack. The first cooling rack and the second cooling rack provided by the cooling mechanism can cool the product twice, enabling the product to be cooled sufficiently. The first slide rail abuts against the upper end surfaces of the first cooling rack and the second cooling rack respectively, facilitating the transportation of the product.

[0020] Furthermore, a horizontal platform is arranged on one side of the cooling mechanism away from the hot pressing and shaping mechanism.

[0021] Through the above improvements, a horizontal platform is arranged on one side of the cooling mechanism away from the hot pressing and shaping mechanism. The cooled product is placed on the horizontal platform, which can facilitate the inspection of whether the edge of the product fits the tabletop, thereby conducting a preliminary detection on whether the processing is qualified.

[0022] Furthermore, for a method of local hot pressing and shaping of large thin-walled aluminum alloy die-castings, the specific steps of deformation control are as follows: Step 1, loading: The connecting frame resets to the loading station, and the worker places the product to be hot-shaped on the connecting frame. Step 2, feeding: The connecting frame moves to the lower part of the conveying mechanism through the sliding block and the second slide rail. The pneumatic switch is turned on. The cylinder of the conveying mechanism drives the suction cup part to descend to the height in contact with the product. The switch on the suction cup part is turned on, and the suction cup part adsorbs the product. At this time, the motor on the lower fixed plate runs and drives the sliding block to clamp the product through the screw-nut pair. The pneumatic switch is turned off, and the cylinder drives the suction cup part to drive the adsorbed product to rise. Step 3, unloading: The conveying mechanism slides along the first slide rail to the processing station of the hot pressing and shaping mechanism. The pneumatic switch is turned on. The cylinder of the conveying mechanism drives the suction cup part to descend. At this time, the switch on the suction cup part is turned off, and the suction cup part releases the product. Moreover, the motor on the lower fixed plate runs to retract the sliding block. The product falls into the lower shaping module. The pneumatic switch is turned off, and the cylinder retracts the suction cup part. The conveying mechanism returns to the feeding station along the first slide rail. Step 4, hot pressing and shaping: Four laser sensors on the processing station detect that the product is placed flat in the lower shaping module, and the hydraulic press is started to push the upper shaping module to close the mold to the specified position, and the module preheating process is started. The heating cores in each area are automatically heated according to the calculated heating time, and after continuously heating for 79 s, the hydraulic press continues to press down, the shaping pressure is 6 t, and the pressure holding time is 10 s; After the hot shaping is completed, the mold is opened, and the hydraulic press raises the upper shaping module and resets it to the initial position.

[0023] Step 5, picking: The conveying mechanism slides from the cooling station along the first slide rail to the processing station of the hot pressing and shaping mechanism, turns on the switch on the suction cup part, and the suction cup part adsorbs the product. At this time, the motor on the lower fixing plate runs and drives the sliding block to clamp the product through the screw-nut pair, closes the pneumatic switch, and the air cylinder drives the suction cup part to drive the adsorbed product to rise; Step 6, transporting: The conveying mechanism slides from the processing station of the hot pressing and shaping mechanism along the first slide rail to the cooling station, turns on the pneumatic switch, and the air cylinder of the conveying mechanism drives the suction cup part to descend. At this time, the switch on the suction cup part is closed, the suction cup part releases the product, and the motor on the lower fixing plate runs to retract the sliding block, and the product falls onto the first workpiece support of the first cooling rack. The pneumatic switch is closed, the air cylinder retracts the suction cup part, and the conveying mechanism is separated from the product; Step 7, cooling: After the product falls onto the first workpiece support of the first cooling rack, the first cooling fan in the first cooling rack is started to cool the product for the first time. After cooling for 40 s, the conveying mechanism clamps the semi-cooled product to the second workpiece support on the second cooling rack, and the second cooling fan in the second cooling rack is started. After cooling for 60 s, the product is completely cooled; Step 8, inspection: Place the shaped product on the horizontal table, check whether the edge of the workpiece fits the tabletop, and the hot pressing and shaping is completed.

[0024] Compared with the prior art, this method transports the product through the conveying mechanism and the first slide rail, replacing manual handling, saving physical strength, and integrating functions of auxiliary feeding, hot shaping, cooling, picking, and inspection, with strong functionality. Description of the Drawings

[0025] Figure 1 It is a schematic three-dimensional structure diagram of the whole device; Figure 2 It is a schematic structural diagram of the whole device from a top-down perspective; Figure 3 It is a schematic structural diagram of the whole device from a front-facing perspective; Figure 4 It is a schematic three-dimensional structure diagram of the conveying mechanism of the device; Figure 5 It is a schematic three-dimensional structure diagram of the conveying mechanism of the device (from another perspective); Figure 6It is a three-dimensional structural schematic diagram of the hot pressing and shaping mechanism of the device; Figure 7 It is a three-dimensional structural schematic diagram (another perspective) of the hot pressing and shaping mechanism of the device; Figure 8 It is a partially enlarged three-dimensional structural schematic diagram at position A of the device.

[0026] Among them, 1. Conveying mechanism; 1.1. Sliding wheel; 1.2. Frame; 1.3. Upper fixing plate; 1.4. Lower fixing plate; 1.5. Guide pillar and guide sleeve; 1.6. Cylinder; 1.7. Suction cup part; 1.8. Sliding block; 1.9. Motor; 2. Hot pressing and shaping mechanism; 2.1. Workbench; 2.2. Guide pillar; 2.3. Slide beam; 2.4. Upper shaping module; 2.41. First cold shaping block; 2.42. First hot shaping block; 2.43. Limit sleeve; 2.44. Safety padlock; 2.5. Lower shaping module; 2.51. Second cold shaping block; 2.52. Second hot shaping block; 2.53. Limit post; 2.6. Processing station; 2.7. Laser sensor; 2.8. Baffle; 3. Cooling mechanism; 3.1. Cooling station; 3.2. First cooling rack; 3.3. Second cooling rack; 3.4. First workpiece support; 3.5. First cooling fan; 3.6. Second workpiece support; 3.7. Second cooling fan; 4. Support table; 4.1. First slide rail; 4.2. Feeding station; 4.3. Second slide rail; 4.4. Connecting frame; 4.41. Positioning block; 4.42. Sliding block; 5. Product; 6. Horizontal table. Detailed implementation manners

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] Such as Figures 1 to 8A local hot pressing and shaping device for large thin-walled aluminum alloy die-castings as shown includes a conveying mechanism 1, a hot pressing and shaping mechanism 2, a cooling mechanism 3 and a support table 4. A product 5 to be processed is installed on the support table 4. The conveying mechanism 1 is arranged on both sides of the hot pressing and shaping mechanism 2. A first slide rail 4.1 is installed on the support table 4, and the first slide rail 4.1 sequentially passes through the hot pressing and shaping mechanism 2 and the cooling mechanism 3. A sliding wheel 1.1 is arranged at the lower end of the conveying mechanism 1, and the sliding wheel 1.1 is slidably matched with the slide rail. The conveying mechanism 1 conveys the product 5 into the hot pressing and shaping mechanism 2. The hot pressing and shaping mechanism 2 performs hot pressing and shaping on the whole product 5. After completion, the conveying mechanism 1 takes out the product 5 from the hot pressing and shaping mechanism 2 and conveys it to the cooling mechanism 3. After cooling by the cooling mechanism 3, the product 5 is detected.

[0030] The hot pressing and shaping mechanism 2 includes a workbench 2.1. Guide columns 2.2 are arranged on the workbench 2.1. A sliding beam 2.3 is arranged at one end of the guide column 2.2 away from the workbench 2.1. The sliding beam 2.3 can slide up and down on the guide column 2.2. The guide column 2.2 plays a guiding role in the up and down sliding of the sliding beam 2.3. An oil press is arranged at the upper end of the sliding beam 2.3. The oil press can provide a power source for the sliding beam 2.3, and the oil press drives the sliding beam 2.3 to perform lifting movement on the guide column 2.2.

[0031] Shielding plates 2.8 arranged on both sides of the processing station 2.6 can prevent rapid heat dissipation during processing and can play a blocking role.

[0032] An upper shaping module 2.4 is arranged at the lower end of the sliding beam 2.3. A lower shaping module 2.5 is fixedly arranged on the upper end surface of the workbench 2.1. A processing station 2.6 is formed between the upper shaping module 2.4 and the lower shaping module 2.5. A laser sensor 2.7 is arranged at the processing station 2.6. The laser sensor 2.7 can detect whether the product 5 is placed in the processing station 2.6. Shielding plates 2.8 are arranged on both sides of the processing station 2.6. The shielding plates 2.8 can prevent rapid heat dissipation during processing and can play a blocking role.

[0033] The upper shaping module 2.4 includes a first cold shaping block 2.41 and a first hot shaping block 2.42. The first cold shaping block 2.41 is arranged in the central area of the upper shaping module 2.4. Two first hot shaping blocks 2.42 are arranged on two opposite sides of the first cold shaping block 2.41, and four first hot shaping blocks 2.42 are arranged on the other two opposite sides. The lower shaping module 2.5 includes a second cold shaping block 2.51 and a second hot shaping block 2.52. The second cold shaping block 2.51 is arranged in the central area of the lower shaping module 2.5. Two second hot shaping blocks 2.52 are arranged on two opposite sides of the second cold shaping block 2.51, and four second hot shaping blocks 2.52 are arranged on the other two opposite sides. Heat insulation plates cover the side surfaces around the first hot shaping block 2.42 and the second hot shaping block 2.52. The heat insulation plates can prevent heat loss. The first cold shaping block 2.41, the first hot shaping block 2.42, the second cold shaping block 2.51, and the second hot shaping block 2.52 can perform the same heating temperature and pressure shaping process on parts of the product 5 with different deformation degrees. Performing this process on parts that do not require shaping will cause energy waste.

[0034] Several limit sleeves 2.43 are also arranged on the upper shaping module 2.4. The limit sleeves 2.43 are arranged at the four corners of the upper shaping module 2.4. Several limit posts 2.53 are also arranged on the lower shaping module 2.5. The limit sleeves 2.43 are arranged at the four corners of the upper shaping module 2.4. When the limit posts 2.53 are completely inserted into the limit sleeves 2.43, the upper shaping module 2.4 and the lower shaping module 2.5 are in the closed mold state. The arranged limit posts 2.53 and limit sleeves 2.43 can play a role in limiting the closing of the upper shaping module 2.4 and the lower shaping module 2.5.

[0035] A safety padlock 2.44 is also fixedly installed on the upper shaping module 2.4. The safety padlock 2.44 can play a role in protecting the product 5 during the closed mold process.

[0036] Transport mechanisms 1 are arranged on both sides of the hot pressing and shaping mechanism 2. A feeding station 4.2 is formed between the transport mechanisms 1 and the support table 4.

[0037] The support table 4 includes a second slide rail 4.3 and a connecting frame 4.4. A positioning block 4.41 is arranged on the connecting frame 4.4. The product 5 is arranged on the connecting frame 4.4 through the positioning block 4.41. The positioning block 4.41 can play a role in fixing the product 5 and preventing the product 5 from shifting.

[0038] A sliding block 4.42 is fixedly connected to the lower end of the connecting frame 4.4. The sliding block 4.42 is slidably connected to the second slide rail 4.3. Through the second slide rail 4.3 and the sliding block 4.42 provided at the lower end of the connecting frame 4.4, it is possible to conveniently transport the product 5 after loading to the feeding station 4.2. The connecting frame 4.4 can transport the product 5 to the feeding station 4.2, facilitating the subsequent grasping of the product 5 by the transporting mechanism 1.

[0039] The feeding mechanism includes a machine frame 1.2, an upper fixing plate 1.3, and a lower fixing plate 1.4. The upper fixing plate 1.3 and the lower fixing plate 1.4 are fixedly connected to the machine frame 1.2 through guide pillars and guide sleeves 1.5.

[0040] A cylinder 1.6 is provided on the side of the upper fixing plate 1.3 away from the support table 4, and a plurality of suction cup members 1.7 are provided on the side of the lower fixing plate 1.4 close to the support table 4. The cylinder 1.6 drives the suction cup members 1.7 to move up and down through the guide pillars and guide sleeves 1.5. When the suction cup members 1.7 contact the product 5, they can suck the product 5, realizing the grasping of the product 5 and facilitating transportation.

[0041] A motor 1.9 and a plurality of sliding clamping blocks 1.8 are provided on the lower fixing plate 1.4. When the suction cup members 1.7 suck the product 5, the sliding clamping blocks 1.8 drive to clamp the product 5 through the motor 1.9, further fixing the product 5 to prevent it from falling during transportation.

[0042] A cooling station 3.1 is formed between the cooling mechanism 3 and the transporting mechanism 1. After the product 5 is processed by the hot pressing and shaping mechanism 2, the transporting mechanism 1 transports the product 5 from the processing station 2.6 to the cooling station 3.1 for cooling the product 5.

[0043] The cooling mechanism 3 includes a continuously arranged first cooling rack 3.2 and a second cooling rack 3.3. A first workpiece support 3.4 for placing the product 5 is installed at the upper end of the first cooling rack 3.2. A plurality of first cooling fans 3.5 are installed inside the first cooling support. When the product 5 is transported to the first workpiece support 3.4, the first cooling fans 3.5 are started to cool the product 5 for the first time.

[0044] A second workpiece support 3.6 for placing the product 5 is installed at the upper end of the second cooling rack 3.3. A plurality of second cooling fans 3.7 are installed inside the second cooling support. When the product 5 is transported to the second workpiece support 3.6, the second cooling fans 3.7 are started to cool the product 5 for the second time.

[0045] A horizontal platform 6 is provided on the side of the cooling mechanism 3 away from the hot pressing and shaping mechanism 2. The cooled product 5 is placed on the horizontal platform 6, which can facilitate checking whether the edge of the product 5 fits the tabletop, thereby performing a preliminary inspection on whether the processing is qualified.

[0046] The first cooling rack 3.2 and the second cooling rack 3.3 provided by the cooling mechanism 3 can cool the product 5 twice, enabling the product 5 to be cooled sufficiently; the first slide rail 4.1 abuts against the upper end faces of the first cooling rack 3.2 and the second cooling rack 3.3 respectively, facilitating the transportation of the product 5.

[0047] The present invention also provides a local hot pressing and shaping method for large thin-walled aluminum alloy die castings. The specific steps of deformation control are as follows: Step 1, Loading: The connecting frame 4.4 resets to the loading station, and the worker places the product 5 to be hot shaped on the connecting frame 4.4.

[0048] Step 2, Feeding: The connecting frame 4.4 moves to the lower part of the transportation mechanism 1 through the sliding block 4.42 and the second slide rail 4.3. The pneumatic switch is turned on, and the cylinder 1.6 of the transportation mechanism 1 drives the suction cup member 1.7 to descend to the height in contact with the product 5. The switch on the suction cup member 1.7 is turned on, and the suction cup member 1.7 adsorbs the product 5. At this time, the motor 1.9 on the lower fixing plate 1.4 runs and drives the sliding block 1.8 to clamp the product 5 through the screw-nut pair. The pneumatic switch is turned off, and the cylinder 1.6 drives the suction cup member 1.7 to drive the adsorbed product 5 to rise.

[0049] Step 3, Unloading: The transportation mechanism 1 slides along the first slide rail 4.1 to the processing station 2.6 of the hot pressing and shaping mechanism 2. The pneumatic switch is turned on, and the cylinder 1.6 of the transportation mechanism 1 drives the suction cup member 1.7 to descend. At this time, the switch on the suction cup member 1.7 is turned off, and the suction cup member 1.7 releases the product 5. Moreover, the motor 1.9 on the lower fixing plate 1.4 runs to retract the sliding block 1.8, and the product 5 falls into the lower shaping module 2.5. The pneumatic switch is turned off, and the cylinder 1.6 retracts the suction cup member 1.7. The transportation mechanism 1 returns to the feeding station 4.2 along the first slide rail 4.1.

[0050] Step 4, Hot Pressing and Shaping: The four laser sensors 2.7 on the processing station 2.6 detect that the product 5 is placed flat in the lower shaping module 2.5. The hydraulic press is started to push the upper shaping module 2.4 to close the mold to the specified position, and the module preheating process is started. The heating cores in each area are automatically heated according to the calculated heating time and continuously heat for 79 s. Then, the hydraulic press continues to press down, the shaping pressure is 6 t, and the holding pressure time is 10 s; after the hot shaping is completed, the mold is opened, and the hydraulic press raises the upper shaping module 2.4 to reset it to the initial position.

[0051] Step 5, Taking the Material: The transportation mechanism 1 slides from the cooling station 3.1 along the first slide rail 4.1 to the processing station 2.6 of the hot pressing and shaping mechanism 2. The switch on the suction cup member 1.7 is turned on, and the suction cup member 1.7 adsorbs the product 5. At this time, the motor 1.9 on the lower fixing plate 1.4 runs and drives the sliding block 1.8 to clamp the product 5 through the screw-nut pair. The pneumatic switch is turned off, and the cylinder 1.6 drives the suction cup member 1.7 to drive the adsorbed product 5 to rise.

[0052] After the hot pressing and shaping of product 5 is completed and the product 5 is taken out, clean the upper shaping module 2.4 and the lower shaping module 2.5 to facilitate the next operation.

[0053] Step 6, Transportation: The transportation mechanism 1 slides along the first slide rail 4.1 from the processing station 2.6 of the hot pressing and shaping mechanism 2 to the cooling station 3.1. Open the pneumatic switch, and the cylinder 1.6 of the transportation mechanism 1 drives the suction cup member 1.7 to descend. At this time, close the switch on the suction cup member 1.7, and the suction cup member 1.7 releases the product 5. Moreover, the motor 1.9 on the lower fixed plate 1.4 operates to retract the sliding block 1.8, and the product 5 falls onto the first workpiece support 3.4 of the first cooling rack 3.2. Close the pneumatic switch, the cylinder 1.6 retracts the suction cup member 1.7, and the transportation mechanism 1 is separated from the product 5.

[0054] Step 7, Cooling: After the product 5 falls onto the first workpiece support 3.4 of the first cooling rack 3.2, the first cooling fan 3.5 inside the first cooling rack 3.2 starts to cool the product 5 for the first time. After cooling for 40 s, the transportation mechanism 1 clamps the semi-cooled product 5 to the second workpiece support 3.6 on the second cooling rack 3.3, and the second cooling fan 3.7 inside the second cooling rack 3.3 starts. After cooling for 60 s, the product 5 is completely cooled.

[0055] Step 8, Detection: Place the shaped product 5 on the horizontal table 6, and check whether the edge of the workpiece fits the tabletop. The hot pressing and shaping is completed.

[0056] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A local hot pressing and shaping device for large thin-walled die-castings of aluminum alloy, characterized in that: It includes a conveying mechanism (1), a hot pressing and shaping mechanism (2), a cooling mechanism (3) and a support table (4). A product (5) to be processed is installed on the support table (4). The conveying mechanism (1) is arranged on both sides of the hot pressing and shaping mechanism (2). A first slide rail (4.1) is installed on the support table (4), and the first slide rail (4.1) sequentially passes through the hot pressing and shaping mechanism (2) and the cooling mechanism (3). A sliding wheel (1.1) is arranged at the lower end of the conveying mechanism (1), and the sliding wheel (1.1) is slidably matched with the first slide rail (4.1). The conveying mechanism (1) conveys the product (5) into the hot pressing and shaping mechanism (2), and the hot pressing and shaping mechanism (2) performs hot pressing and shaping on the whole product (5). After completion, the conveying mechanism (1) takes out the product (5) from the hot pressing and shaping mechanism (2) and conveys it to the cooling mechanism (3). After being cooled by the cooling mechanism (3), the product (5) is detected.

2. The local hot pressing and shaping device for large thin-walled aluminum alloy die castings according to claim 1, characterized in that: The hot pressing and shaping mechanism (2) includes a workbench (2.1). A guide post (2.2) is arranged on the workbench (2.1). A sliding beam (2.3) is arranged at the end of the guide post (2.2) far from the workbench (2.1). An upper shaping module (2.4) is arranged at the lower end of the sliding beam (2.3). A lower shaping module (2.5) is fixedly arranged on the upper end surface of the workbench (2.1). A processing station (2.6) is formed between the upper shaping module (2.4) and the lower shaping module (2.5), and a laser sensor (2.7) is arranged at the processing station (2.6). An oil press is arranged at the upper end of the sliding beam (2.3), and the oil press drives the sliding beam (2.3) to move up and down on the guide post (2.2). When the upper shaping module (2.4) and the lower shaping module (2.5) are closed, the product (5) performs hot pressing and shaping operations at the processing station (2.6). And shielding plates (2.8) are arranged on both sides of the processing station (2.6).

3. The local hot pressing and shaping device for large thin-walled aluminum alloy die-castings according to claim 2, wherein: The upper shaping module (2.4) includes a first cold shaping block (2.41) and a first hot shaping block (2.42). In the central area of the first upper shaping module (2.4), two first hot shaping blocks (2.42) are arranged on two opposite sides of the first cold shaping block (2.41), and four first hot shaping blocks (2.42) are arranged on the other two opposite sides. The lower shaping module (2.5) includes a second cold shaping block (2.51) and a second hot shaping block (2.52). In the central area of the second upper shaping module (2.4), two second hot shaping blocks (2.52) are arranged on two opposite sides of the second cold shaping block (2.51), and four second hot shaping blocks (2.52) are arranged on the other two opposite sides. Heat insulation plates cover the side surfaces around the first hot shaping block (2.42) and the second hot shaping block (2.52).

4. An apparatus for locally hot pressing and shaping a large thin-walled aluminum alloy die casting according to claim 2, characterized in that: A number of limit posts (2.53) are provided at the upper end of the lower shaping module (2.5), and a number of limit sleeves (2.43) are provided at the lower end of the upper shaping module (2.4). When the limit posts (2.53) are completely inserted into the limit sleeves (2.43), the upper shaping module (2.4) and the lower shaping module (2.5) complete the mold clamping, and a safety padlock (2.44) is fixedly installed on the upper shaping module (2.4).

5. A local hot pressing and shaping device for large thin-walled aluminum alloy die-castings according to claim 1, characterized in that: A feeding station (4.2) is formed between the support table (4) and the conveying mechanism (1). The support table (4) includes a second slide rail (4.3) and a connecting frame (4.4). A positioning block (4.41) is provided on the connecting frame (4.4). The product (5) is arranged on the connecting frame (4.4) through the positioning block (4.41). The lower end of the connecting frame (4.4) is fixedly connected with a sliding block (4.42). The sliding block (4.42) is slidably connected with the second slide rail (4.3). The connecting frame (4.4) transports the product (5) to the feeding station (4.2).

6. The local hot pressing and shaping device for large thin-walled aluminum alloy die castings according to claim 1, characterized in that: The conveying mechanism (1) includes a frame (1.2), an upper fixing plate (1.3) and a lower fixing plate (1.4). The upper fixing plate (1.3) and the lower fixing plate (1.4) are fixedly connected to the frame (1.2) through a guide pillar and guide sleeve (1.5). A cylinder (1.6) is arranged on one side of the upper fixing plate (1.3) away from the support table (4). A number of sucker parts (1.7) are arranged on one side of the lower fixing plate (1.4) close to the support table (4). The cylinder (1.6) drives the sucker parts (1.7) to move up and down through the guide pillar and guide sleeve (1.5) to suck the product (5).

7. The local hot pressing and shaping device for large thin-walled aluminum alloy die castings according to claim 6, characterized in that: A number of sliding blocks (1.8) and a motor (1.9) are arranged on the lower fixing plate (1.4). When the sucker parts (1.7) suck the product (5), the motor (1.9) drives the sliding blocks (1.8) to clamp the product (5).

8. An apparatus for local hot pressing and shaping of a large thin-walled die-cast aluminum alloy part according to claim 1, characterized in that: A cooling station (3.1) is formed between the cooling mechanism (3) and the conveying mechanism (1). The cooling mechanism (3) includes a continuously arranged first cooling frame (3.2) and a second cooling frame (3.3). The first slide rail (4.1) abuts against the upper end surfaces of the first cooling frame (3.2) and the second cooling frame (3.3) respectively. A first workpiece support (3.4) for placing the product (5) is installed at the upper end of the first cooling frame (3.2). A number of first cooling fans (3.5) are installed in the first cooling support. A second workpiece support (3.6) for placing the product (5) is installed at the upper end of the second cooling frame (3.3). A number of second cooling fans (3.7) are installed in the second cooling support. The first cooling frame (3.2) and the second cooling frame (3.3) completely cool the product (5).

9. A local hot pressing and shaping device for large thin-walled aluminum alloy die castings according to claim 1, characterized in that: A horizontal table (6) is arranged on one side of the cooling mechanism (3) away from the hot pressing and shaping mechanism (2).

10. A local hot pressing and shaping method for large thin-walled die-castings of aluminum alloy. According to the local hot pressing and shaping device for large thin-walled die-castings of aluminum alloy described in any one of claims 1-9, it is characterized in that: The specific steps of deformation regulation are as follows: Step 1. Loading: The connecting frame (4.4) resets to the loading station, and the worker places the product (5) to be hot-shaped on the connecting frame (4.4). Step 2. Feeding: The connecting frame (4.4) moves to the lower part of the conveying mechanism (1) through the sliding block (4.42) and the second slide rail (4.3). The pneumatic switch is turned on. The cylinder (1.6) of the conveying mechanism (1) pushes the suction cup part (1.7) down to the height where it contacts the product (5). The switch on the suction cup part (1.7) is turned on, and the suction cup part (1.7) adsorbs the product (5). At this time, the motor (1.9) on the lower fixing plate (1.4) runs and drives the sliding block (1.8) to clamp the product (5) through the screw-nut pair. The pneumatic switch is turned off, and the cylinder (1.6) drives the suction cup part (1.7) to lift the adsorbed product (5). Step 3. Unloading: The conveying mechanism (1) slides along the first slide rail (4.1) to the processing station (2.6) of the hot pressing and shaping mechanism (2). The pneumatic switch is turned on. The cylinder (1.6) of the conveying mechanism (1) drives the suction cup part (1.7) to descend. At this time, the switch on the suction cup part (1.7) is turned off, and the suction cup part (1.7) releases the product (5). The motor (1.9) on the lower fixing plate (1.4) runs to retract the sliding block (1.8), and the product (5) falls into the lower shaping module (2.5). The pneumatic switch is turned off, and the cylinder (1.6) retracts the suction cup part (1.7). The conveying mechanism (1) returns to the feeding station (4.2) along the first slide rail (4.1). Step 4. Hot pressing and shaping: Four laser sensors (2.7) on the processing station (2.6) detect that the product (5) is placed flat in the lower shaping module (2.5). The hydraulic press is started to push the upper shaping module (2.4) to close the mold to the specified position, and the module preheating process is started. The heating cores in each area are automatically heated according to the calculated heating time and continue to heat for 79 s. Then, the hydraulic press continues to press down, the shaping pressure is 6 t, and the pressure holding time is 10 s. After the hot shaping is completed, the mold is opened, and the hydraulic press lifts the upper shaping module (2.4) and resets it to the initial position. Step 5. Taking the material: The conveying mechanism (1) slides from the cooling station (3.1) along the first slide rail (4.1) to the processing station (2.6) of the hot pressing and shaping mechanism (2). The switch on the suction cup part (1.7) is turned on, and the suction cup part (1.7) adsorbs the product (5). At this time, the motor (1.9) on the lower fixing plate (1.4) runs and drives the sliding block (1.8) to clamp the product (5) through the screw-nut pair. The pneumatic switch is turned off, and the cylinder (1.6) drives the suction cup part (1.7) to lift the adsorbed product (5). Step 6. Transportation: The transportation mechanism (1) slides along the first slide rail (4.1) from the processing station (2.6) of the hot pressing and shaping mechanism (2) to the cooling station (3.1). The pneumatic switch is turned on, and the cylinder (1.6) of the transportation mechanism (1) drives the suction cup member (1.7) to descend. At this time, the switch on the suction cup member (1.7) is turned off, and the suction cup member (1.7) releases the product (5). Meanwhile, the motor (1.9) on the lower fixing plate (1.4) operates to retract the sliding block (1.8), and the product (5) falls onto the first workpiece support (3.4) of the first cooling rack (3.2). The pneumatic switch is turned off, the cylinder (1.6) retracts the suction cup member (1.7), and the transportation mechanism (1) is separated from the product (5). Step 7. Cooling: After the product (5) falls onto the first workpiece support (3.4) of the first cooling rack (3.2), the first cooling fan (3.5) inside the first cooling rack (3.2) starts to cool the product (5) for the first time. After 40 s of cooling, the transportation mechanism (1) clamps the semi-cooled product (5) onto the second workpiece support (3.6) of the second cooling rack (3.3). The second cooling fan (3.7) inside the second cooling rack (3.3) starts, and after 60 s of cooling, the product (5) is completely cooled. Step 8. Inspection: The shaped product (5) is placed on the horizontal table (6) to check whether the edge of the workpiece fits the tabletop, and the hot pressing and shaping is completed.

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