Aluminum alloy plate forming die

Abstract

The invention discloses an aluminum alloy plate forming die, and belongs to the technical field of die forming, the aluminum alloy plate forming die comprises a base, an upper die assembly, an elastic buffer device, a lower die assembly, a hydraulic cylinder, an auxiliary mounting structure and a clamping plate, the upper surface of the base is fixedly connected with a mounting frame, and the output end of the hydraulic cylinder is fixedly connected with a threaded rod; and the side surface of the threaded rod is movably connected with an upper mounting seat. Through combination of the buffer spring and the damper, stamping impact force is absorbed, springback is restrained, plate damage and die load are reduced, the auxiliary mounting device is combined with a T-shaped structure, an L-shaped clamping frame and the like, labor-saving disassembly and assembly of an upper die assembly and a lower die assembly are achieved, manual lifting is not needed, the temperature of a resistance wire is accurately controlled under regulation and control of a controller, different plates are adapted, and uneven deformation is avoided; the hydraulic cavity is matched with the piston rod, the pump body adjusts the ejection speed and force of the lower mold core by controlling the oil amount, stable demolding is guaranteed, and the plate is prevented from being damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of mold forming, and in particular relates to an aluminum alloy plate forming mold. Background Art

[0002] Aluminum alloy sheets are widely used in many fields due to their excellent performance. In the forming process of aluminum alloy sheets, molds play a vital role.

[0003] However, there are many problems with existing aluminum alloy sheet forming molds. On the one hand, traditional molds have complex structures, high manufacturing costs, and it is difficult to ensure processing accuracy, resulting in uneven quality of the produced aluminum alloy sheets.

[0004] During the stamping process, some molds have uncontrollable mold temperature, which can easily cause defects such as scratches and uneven deformation on the aluminum alloy sheets during stamping. In addition, when some molds are demolded, the aluminum alloy sheets are easily adhered to the molds, which not only affects production efficiency but may also damage the surface of the sheet. In addition, when facing the needs of forming aluminum alloy sheets of different shapes and sizes, existing molds often need to be replaced frequently. The upper and lower molds are usually fastened with multiple bolts and the upper mold needs to be lifted by manpower, which is time-consuming and labor-intensive to replace. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an aluminum alloy plate forming die, comprising a base, an upper die assembly, an elastic buffer device, a lower die assembly, a hydraulic cylinder, an auxiliary mounting structure and a clamping plate; The upper surface of the base is fixedly connected to a mounting bracket, the output end of the hydraulic cylinder is fixedly connected to a threaded rod, the side surface of the threaded rod is movably connected to an upper mounting seat, the upper mold assembly includes an upper mold base and an upper mold core, and the elastic buffer device includes a buffer spring and a damper; The upper surface of the base is fixedly connected to an L-shaped bracket, and the side surface of the L-shaped bracket is movably connected to a limiting plug rod. The lower mold assembly includes a lower mold base and a lower mold core. The side surface of the lower mold base is fixedly connected to a cross bar. A hydraulic cavity is provided inside the lower mold base, and a piston rod is provided in the hydraulic cavity. Resistance wires are fixedly connected to the interiors of the upper mold core and the lower mold base, and coolant pipes are provided inside the upper mold base and the lower mold base. The auxiliary mounting structure includes a bottom plate and a pull-out plate.

[0006] The technical solution adopted to solve the above technical problems is: the mounting frame provides stable support for the hydraulic cylinder to ensure stable transmission of stamping power; the buffer spring and damper of the elastic buffer device cooperate to alleviate the impact force during stamping and reduce damage to the plate; the combination of the L-shaped bracket and the limit rod enables rapid disassembly and assembly of the lower die assembly, improving replacement efficiency; the resistance wire and coolant pipe in the upper die core and the lower die seat can accurately control the temperature to adapt to plates of different materials; the auxiliary mounting structure facilitates the installation and debugging of the upper die assembly; the vertical rod and the clamping plate cooperate to stably clamp the plate; the overall structure is compact, taking into account both forming quality and ease of operation, and is suitable for a variety of aluminum alloy plate forming scenarios.

[0007] Furthermore, the hydraulic cylinder is fixedly mounted on the upper surface of the mounting frame, the side surface of the threaded rod is threadedly connected with a nut, blocks are symmetrically provided on both sides of the output end of the hydraulic cylinder, the upper surface of the upper mounting seat is symmetrically provided with slots, the lower surface of the upper mold seat is provided with a mounting groove, and the upper mold core is installed in the mounting groove.

[0008] Through the above technical solution, the hydraulic cylinder is fixed on the mounting frame to ensure stable output force. The threaded rod and nut cooperate to fix the upper mounting seat to the output end of the hydraulic cylinder. The card slot is used to insert the card block to fix the installation position of the upper mounting seat, thereby enhancing the connection stability between the output end of the hydraulic cylinder and the upper mounting seat, preventing relative displacement during stamping, improving stamping accuracy, and reducing sheet forming errors caused by loose connections.

[0009] Furthermore, the elastic buffer device is installed between the upper mold base and the upper mold core, the upper surface of the upper mold core is fixedly connected with a spring seat, the two ends of the buffer spring are respectively fixedly connected to the top inner wall of the mounting groove and the spring seat, the upper mold base and the upper mold core are fixedly connected through a damper, the lower surface of the upper mounting base is provided with a T-shaped mounting groove, the upper surface of the upper mold base is fixedly connected with a T-shaped mounting block, and the T-shaped mounting block is located in the T-shaped mounting groove.

[0010] Through the above technical solution, the spring seat provides a stable installation foundation for the buffer spring, so that the buffer force acts evenly on the upper die core to avoid excessive local force. The damper connects the upper die seat and the upper die core, and the rebound speed of the buffer spring can be adjusted to ensure the smooth reset of the upper die core after stamping. The cooperation of the T-shaped mounting block and the T-shaped mounting slot realizes the rapid positioning and installation of the upper die seat and the upper mounting seat, thereby improving assembly efficiency. The connection is firm and can withstand the impact force during stamping.

[0011] Furthermore, the side surface of the upper mounting seat passes through a movably connected limiting column, the side surface of the limiting column contacts the T-shaped mounting block, one end of the limiting column is fixedly connected to a handheld disk, the side surface of the handheld disk is fixedly connected to a return spring, one end of the return spring is fixedly connected to the upper mounting seat, the upper surface of the upper mounting seat is threadedly connected to a screw, and the side surface of the screw is threadedly connected to the T-shaped mounting block.

[0012] Through the above technical solution, the limit column can laterally limit the T-shaped mounting block to prevent it from falling out of the T-shaped mounting slot during the stamping process, thereby enhancing the connection reliability. The handheld disk facilitates the operation of the limit column, and the reset spring can automatically reset the limit column, simplifying the operation process. The screws further fix the upper mold base and the upper mounting base. The double fixation ensures a stable connection, avoids shaking when the mold is working, and improves the forming accuracy.

[0013] Furthermore, a groove body is provided on the upper surface of the lower die base, the upper end of the piston rod is fixedly connected to the lower die core, the lower die core is located in the groove body, a connecting pipe is provided on the side surface of the lower die base, the connecting pipe is connected to the hydraulic chamber, vertical rods are symmetrically provided on the side inner wall of the base, the upper surface of the vertical rods is fixedly connected to the clamping plate, and the side surface of the mounting frame is fixedly connected to the controller.

[0014] Through the above technical solution, the trough body provides installation space for the lower mold core, ensuring that the lower mold core can be stably raised and lowered under hydraulic drive. The cross bar cooperates with the L-shaped bracket to facilitate the rapid positioning and installation of the lower mold base. The limit rod can lock the position of the cross bar to prevent the lower mold base from moving during operation. The connecting pipe builds a passage between the hydraulic chamber and the external hydraulic system to ensure stable delivery of hydraulic oil, guarantee the smooth ejection and reset of the lower mold core, and improve demolding efficiency.

[0015] Furthermore, an installation cavity is provided on the side surface of the base, an oil tank is fixedly connected to the interior of the installation cavity, a pump body is fixedly connected to the inner wall of the installation cavity, the input end of the pump body is connected to the oil tank, the output end of the pump body is fixedly connected to a pipeline, one end of the pipeline is connected to a connecting pipe, and a flow meter is provided on the pipeline.

[0016] Through the above technical solution, the installation cavity provides installation space for the oil tank and pump body, making the mold structure more compact. The oil tank stores high-pressure oil, and the pump body provides power for the hydraulic system, which can accurately control the high-pressure oil delivery volume. The flow meter can monitor the high-pressure oil flow in the pipeline in real time, which is convenient for adjusting the ejection speed and ejection force of the lower mold core, avoiding sheet deformation due to improper ejection parameters, and improving demolding quality.

[0017] Furthermore, a displacement sensor is provided on the inner side wall of the vertical rod, a rubber pad is fixedly connected to the side surface of the clamping plate, a pressure sensor is provided on the side surface of the clamping plate, a first motor is fixedly connected to the side surface of the base, a bidirectional threaded rod is fixedly connected to the output end of the first motor, and the side surface of the bidirectional threaded rod is threadedly connected to the vertical rod.

[0018] Through the above technical solution, the first motor drives the bidirectional threaded rod to rotate, driving the vertical rod and the clamping plate to move in opposite directions, realizing automatic clamping of the plate, reducing manual operation and improving efficiency. The displacement sensor monitors the clamping displacement and the pressure sensor monitors the clamping force. The data of both are fed back to the controller, which can accurately control the clamping degree, prevent excessive or insufficient clamping, protect the plate and ensure its stable position, which is suitable for clamping plates of different thicknesses.

[0019] Furthermore, a through groove is provided on the side surface of the mounting frame, a second motor is fixedly connected to the upper surface of the mounting frame, a lead screw is fixedly connected to the output end of the second motor, and a displacement block is threadedly connected to the side surface of the lead screw.

[0020] Through the above technical solution, the through slot provides space for the movement of the displacement block and limits the displacement block so that it can move up and down. The second motor drives the screw to rotate, driving the displacement block to rise and fall. The base plate height can be adjusted to facilitate the precise delivery of the upper mold assembly to the upper mounting seat for installation, reducing the difficulty of manual handling and alignment, saving installation time, and improving the practicality of the auxiliary installation structure.

[0021] Furthermore, the upper surface of the displacement block is fixedly connected with a mounting column, the side surface of the mounting column is rotatably connected to the base plate, the upper surface of the displacement block is movably connected with a pin, the upper surface of the base plate is penetrated with a groove, the side inner wall of the groove is fixedly connected with a guide rod, the side surface of the guide rod is movably connected with a sleeve, the side surface of the sleeve is fixedly connected to the pull-out plate, and the side surface of the pull-out plate is fixedly connected with a handle.

[0022] The beneficial effects of the present invention are as follows: (1) The combination of a buffer spring and a damper between the upper die base and the upper die core absorbs the impact force through spring compression at the moment of stamping contact, while the damper suppresses the spring rebound speed, thus avoiding surface scratches or internal cracks on the sheet caused by traditional rigid stamping. At the same time, this elastic buffer can reduce the instantaneous impact load on the die edge. (2) The auxiliary installation device makes it more time-saving and labor-saving when the upper mold assembly is installed on the upper mounting seat. The installation and disassembly can be completed without human support. The cooperation of the T-shaped installation slot, T-row installation block, L-row bracket, cross bar and limit rod makes the installation of the upper mold assembly and the lower mold assembly more convenient; (3) The temperature of the upper die core and the lower die base can be increased by installing resistance wires in the upper die core and the lower die base. The increased temperature can be precisely controlled under the control of the controller, so that the increased temperature can be adjusted according to the characteristics of the aluminum alloy plate, making it suitable for the stamping of different plates and avoiding defects such as uneven deformation of the aluminum alloy plate during stamping.

[0023] (4) The hydraulic cavity and the piston rod set in the lower die base can lift the lower die core, thereby helping to demold the aluminum alloy sheet after stamping. When the lower die core is lifted, the pump body can control the speed and force of the piston rod by controlling the amount of high-pressure oil pumped in, ensuring that the sheet is smoothly demolded to avoid deformation or damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of an aluminum alloy plate forming die according to the present invention from a first perspective; Figure 2 This is a structural diagram of an aluminum alloy plate forming die according to the present invention from a second perspective; Figure 3 This is an exploded view of the structure of the upper die assembly of an aluminum alloy plate forming die of the present invention; Figure 4 This is an exploded view of the lower die assembly of an aluminum alloy plate forming die of the present invention; Figure 5 This is a partial structural schematic diagram of an aluminum alloy plate forming die of the present invention; Figure 6 This is an installation diagram of an upper die assembly of an aluminum alloy plate forming die according to the present invention; Figure 7 This is a structural diagram of a hydraulic cylinder of an aluminum alloy plate forming die of the present invention; Figure 8 This is a structural diagram of a clamping mechanism of an aluminum alloy plate forming die of the present invention; Figure 9 This is a structural diagram of an auxiliary installation device for an aluminum alloy plate forming die according to the present invention; Figure 10 yes Figure 1 Enlarged view of point A in the middle; Figure 11 yes Figure 1 Enlarged view of point B in the middle.

[0025] Reference numerals: 1, base; 2, mounting bracket; 201, through slot; 3, hydraulic cylinder; 4, threaded rod; 5, nut; 6, clamping block; 7, upper mounting seat; 701, T-shaped mounting slot; 8, upper die seat; 801, mounting slot; 802, upper die core; 9, damper; 10, buffer spring; 11, spring seat; 12, T-shaped mounting block; 13, limiting column; 14, handheld plate; 15, return spring; 16, screw; 17, lower die seat; 18, cross bar; 19, connecting pipe; 20, trough body; 21, lower die core; 22, piston rod; 23. L-shaped bracket; 24. Limiting rod; 25. Controller; 26. Mounting cavity; 27. Oil tank; 28. Pump body; 29. ​​Pipeline; 30. Flow meter; 31. First motor; 32. Bidirectional threaded rod; 33. Vertical rod; 34. Displacement sensor; 35. Clamping plate; 36. Rubber pad; 37. Pressure sensor; 38. Second motor; 381. Lead screw; 39. Displacement block; 40. Mounting column; 41. Latch; 42. Bottom plate; 43. Slot; 44. Guide rod; 45. Sleeve; 46. Pull-out plate; 47. Handle. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] like Figure 1-11 As shown, an aluminum alloy sheet forming mold of this embodiment includes a base 1, an upper mold assembly, an elastic buffer device, a lower mold assembly, a hydraulic cylinder 3, an auxiliary mounting structure and a clamping plate 33. The upper mold base 8 and the lower mold base 17 are detachably connected with a guide column and a guide sleeve to achieve precise guidance and ensure accurate docking during the mold closing process. The guide column and the guide sleeve are both existing technologies and are not shown in the present invention.

[0028] The upper surface of the base 1 is fixedly connected to the mounting frame 2, and the hydraulic cylinder 3 is fixedly mounted on the upper surface of the mounting frame 2. The mounting frame 2 provides a stable support for the hydraulic cylinder 3 to ensure stable transmission of the stamping power. The side surface of the threaded rod 4 is threadedly connected to the nut 5, and blocks 6 are symmetrically provided on both sides of the output end of the hydraulic cylinder 3. The upper surface of the upper mounting seat 7 is symmetrically provided with a slot. The output end of the hydraulic cylinder 3 is fixedly connected to the threaded rod 4, and the side surface of the threaded rod 4 is movably connected to the upper mounting seat 7. The threaded rod 4 cooperates with the nut 5 to fix the upper mounting seat 7 to the output end of the hydraulic cylinder 3. The slot is used to insert the block 6 to fix the installation position of the upper mounting seat 7, enhance the connection stability between the output end of the hydraulic cylinder 3 and the upper mounting seat 7, prevent relative displacement during stamping, improve stamping accuracy, and reduce sheet forming errors caused by loose connections.

[0029] The upper mold assembly includes an upper mold base 8 and an upper mold core 802. The elastic buffer device is installed between the upper mold base 8 and the upper mold core 802. The lower surface of the upper mounting base 7 is provided with a T-shaped mounting groove 701. The upper surface of the upper mold base 8 is fixedly connected with a T-shaped mounting block 12. The T-shaped mounting block 12 is located in the T-shaped mounting groove 701. The cooperation between the T-shaped mounting block 12 and the T-shaped mounting groove 701 realizes the rapid positioning and installation of the upper mold base 8 and the upper mounting base 7, improves the assembly efficiency, and the connection is firm and can withstand the impact force during stamping.

[0030] The elastic buffer device includes a buffer spring 10 and a damper 9. The upper surface of the upper mold core 802 is fixedly connected to a spring seat 11. The two ends of the buffer spring 10 are respectively fixedly connected to the top inner wall of the mounting groove 801 and the spring seat 11. The upper mold base 8 and the upper mold core 802 are fixedly connected through the damper 9. The buffer spring 10 provides the main buffering force. During the stamping process, it can effectively alleviate the impact force of the upper mold core 802 on the aluminum alloy plate, avoiding damage to the plate due to excessive instantaneous impact force. The damper 9 is used to adjust the rebound speed of the buffer spring 10, so that the rebound process of the upper mold core 802 after the stamping is completed is smoother, preventing the rebound too fast from causing secondary impact on the plate.

[0031] The side surface of the upper mounting seat 7 passes through the movably connected limiting column 13, and the side surface of the limiting column 13 contacts the T-shaped mounting block 12. One end of the limiting column 13 is fixedly connected to a handheld disk 14, and the side surface of the handheld disk 14 is fixedly connected to a reset spring 15. One end of the reset spring 15 is fixedly connected to the upper mounting seat 7. The upper surface of the upper mounting seat 7 is threadedly connected with a screw 16, and the side surface of the screw 16 is threadedly connected to the T-shaped mounting block 12. The limiting column 13 can laterally limit the T-shaped mounting block 12 to prevent it from falling out of the T-shaped mounting groove 701 during the stamping process, thereby enhancing the connection reliability. The handheld disk 14 facilitates the operation of the limiting column 13, and the reset spring 15 can automatically reset the limiting column 13, simplifying the operation process. The screw 16 further fixes the upper mold base 8 and the upper mounting seat 7. The double fixation ensures a stable connection, avoids shaking when the mold is working, and improves the forming accuracy.

[0032] The upper surface of the base 1 is fixedly connected with an L-shaped bracket 23, and the side surface of the L-shaped bracket 23 is movably connected with a limit rod 24. The L-shaped bracket 23, the limit rod 24 and the cross bar 18 cooperate to quickly install and limit the installation of the lower die base 17. The limit rod 24 can lock the position of the cross bar 18 to prevent the lower die base 17 from moving during operation. The lower die assembly includes a lower die base 17 and a lower die core 21. The upper surface of the lower die base 17 is provided with a groove body 20, and the lower die core 21 is located in the groove body 20. The side surface of the lower die base 17 is provided with a connecting pipe 19, and the connecting pipe 19 is connected to the hydraulic chamber. The side surface of the lower die base 17 is fixedly connected with the cross rod 18, and the interior of the lower die base 17 is provided with a hydraulic chamber, and a piston rod 22 is provided in the hydraulic chamber. The upper end is fixedly connected to the lower mold core 21, the oil tank 27 stores high-pressure oil, the pump body 28 can accurately control the high-pressure oil delivery volume, and the flow meter 30 can monitor the high-pressure oil flow in the pipeline 29 in real time, which is convenient for adjusting the ejection speed and ejection force of the lower mold core 21, avoiding deformation of the plate due to improper ejection parameters, and improving the demolding quality. The upper mold core 802 and the lower mold base 17 are fixedly connected with resistance wires. The resistance wires are used to heat the upper mold core 802 and the lower mold base 17, and can accurately control the temperature in conjunction with the controller 25 to adapt to plates of different materials. The resistance wires are not shown in the prior art. Coolant pipes are provided inside the upper mold base 8 and the lower mold base 17. The coolant pipes are connected to the external cooling system. The cooling pipes and the external cooling system are both shown in the present invention.

[0033] A mounting cavity 26 is provided on the side surface of the base 1, and an oil tank 27 is fixedly connected to the interior of the mounting cavity 26. A pump body 28 is fixedly connected to the inner wall of the mounting cavity 26. The input end of the pump body 28 is connected to the oil tank 27, and the output end of the pump body 28 is fixedly connected to a pipeline 29. One end of the pipeline 29 is connected to the connecting pipe 19, and a flow meter 30 is provided on the pipeline 29.

[0034] The auxiliary mounting structure includes a base plate 42 and a pull-out plate 46. Vertical rods 33 are symmetrically arranged on the side inner wall of the base 1. The upper surface of the vertical rod 33 is fixedly connected to the clamping plate 35. The side surface of the mounting frame 2 is fixedly connected to the controller 25. The side inner wall of the vertical rod 33 is provided with a displacement sensor 34. The side surface of the clamping plate 35 is fixedly connected to a rubber pad 36. The side surface of the clamping plate 35 is provided with a pressure sensor 37. The displacement sensor 34 monitors the clamping displacement, and the pressure sensor 37 monitors the clamping force. The data of both are fed back to the controller 25, which can accurately control the clamping degree, prevent excessive or insufficient clamping, protect the plate and ensure its stable position, and is suitable for clamping plates of different thicknesses. The side surface of the base 1 is fixedly connected to the first motor 31, and the output end of the first motor 31 is fixedly connected to the bidirectional threaded rod 32. The side surface of the bidirectional threaded rod 32 is threadedly connected to the vertical rod 33.

[0035] The side surface of the mounting frame 2 is provided with a through slot 201, and the upper surface of the mounting frame 2 is fixedly connected to the second motor 38, and the output end of the second motor 38 is fixedly connected to the lead screw 381, and the side surface of the lead screw 381 is threadedly connected to the displacement block 39, and the upper surface of the displacement block 39 is penetrated and fixedly connected to the mounting column 40, and the side surface of the mounting column 40 is rotatably connected to the bottom plate 42, and the upper surface of the displacement block 39 is movably connected to the latch 41. Through holes are symmetrically provided on both sides of the end of the displacement block 39 for fixing the position of the bottom plate 42. The upper surface of the bottom plate 42 is penetrated by a groove 43, and the side inner wall of the groove 43 is fixedly connected to the guide rod 44, and the side surface of the guide rod 44 is movably connected to the sleeve 45. The side surface of the sleeve 45 is fixedly connected to the pull-out plate 46, and the side surface of the pull-out plate 46 is fixedly connected to the handle 47. The lower surface of the pull-out plate 46 is provided with a groove, and a column is rotatably connected in the groove. The side surface of the column contacts the bottom plate 42, so that the pull-out plate 46 is smoother when displaced.

[0036] The auxiliary installation structure facilitates the installation and debugging of the upper mold assembly. When installing the upper mold assembly, pull out the pin 41 and rotate the base plate 42 so that the base plate 42 rotates 180 degrees around the mounting column 40. The rotated base plate 42 is located on the installation side of the upper mold assembly. At this time, the pin 41 is inserted again into the position for fixing the base plate 42, and then the upper mold assembly is placed on the pull-out plate 46. Then, the second motor 38 is started to rotate the screw 381, and the height of the upper mold base 8 is adjusted so that the T-shaped mounting block 12 on the upper mold base 8 is aligned with the T-shaped mounting groove 701. After pulling the limit column 13 outward, push the pull-out plate 46 to insert the T-shaped mounting block 12 into the T-shaped mounting groove 701. At this time, loosen the limit column 13 and reset the limit column 13 to limit the T-shaped mounting block 12. Tighten the screw 16 to complete the installation of the upper mold assembly.

[0037] The controller 25, pump body 28, flow meter 30, first motor 31, second motor 38, displacement sensor 34, and pressure sensor 37 are all electrically connected to an external power supply. The pump body 28, flow meter 30, first motor 31, second motor 38, displacement sensor 34, and pressure sensor 37 are all electrically connected to the controller 25. This is known to those skilled in the art in the prior art.

[0038] The working principle of this embodiment is as follows: first, preparatory work before forming is carried out. According to the shape, size and material characteristics of the aluminum alloy plate to be formed, the appropriate upper mold assembly and lower mold assembly are selected, the latch 41 is pulled out and the bottom plate 42 is rotated so that the bottom plate 42 rotates 180 degrees around the mounting column 40. The rotated bottom plate 42 is located on the installation side of the upper mold assembly. At this time, the latch 41 is reinserted into the position for fixing the bottom plate 42, and then the upper mold assembly is placed on the pull-out plate 46. Then, the second motor 38 is started to rotate the screw 381 to adjust the upper mold seat. 8, align the T-shaped mounting block 12 on the upper mold base 8 with the T-shaped mounting groove 701, pull the limit column 13 outward and push the pull-out plate 46 to insert the T-shaped mounting block 12 into the T-shaped mounting groove 701, then loosen the limit column 13 and reset the limit column 13 to limit the T-shaped mounting block 12, tighten the screw 16 to fix the upper mold base 8 and the upper mounting base 7 together, and then install the lower mold assembly, insert the cross bar 18 of the lower mold base 17 into the L-shaped bracket 23 and push it, and insert the limit rod 24 after it is installed in place to complete the installation.

[0039] The aluminum alloy plate is placed on the lower die base 17, and the bidirectional threaded rod 32 is rotated by starting the first motor 31. The two clamping plates 35 arranged oppositely are displaced in opposite directions to clamp and limit the aluminum alloy plate. During the clamping process, the displacement sensor 34 monitors the displacement in real time and transmits the result to the controller 25. The pressure sensor 37 monitors the clamping force in real time and transmits the result to the controller 25 to avoid excessive clamping or insufficient clamping, and firmly clamps the plate to prevent displacement during the forming process.

[0040] Thereafter, the parameters of the heating system and the cooling system are set through the controller 25, the heating system is started, and the lower die base 17 and the upper die core 802 are preheated by using a resistance wire so that the lower die base 17 and the upper die core 802 reach a temperature suitable for plastic deformation of the sheet. Then, the stamping and forming stage is entered, and the hydraulic cylinder 3 is started to drive the upper die base 8 and the upper die core 802 to move downward. When in contact with the aluminum alloy sheet, the upper die core 802 exerts pressure on the sheet, and the sheet begins to plastically deform under the action of pressure. At this time, the elastic buffer device between the upper die base 8 and the upper die core 802 comes into play, and the buffer spring 10 is compressed to relieve the impact force to prevent the sheet from being damaged due to instantaneous excessive force. The damper 9 adjusts the rebound speed of the buffer spring 10 to ensure smooth pressure transmission. After the stamping is completed, the demolding stage begins. The controller 25 starts the cooling system, and the circulating water in the cooling pipe quickly takes away the heat from the mold, so that the formed aluminum alloy sheet is quickly shaped. Subsequently, the pump body 28 is started to inject high-pressure oil into the hydraulic cavity, pushing the piston rod 22 to move upward, driving the lower mold core 21 to eject the sheet. During the ejection process, the amount of high-pressure oil entering is monitored by the flow meter 30. By adjusting the input of the pump body 28, the ejection speed and ejection force of the lower mold core 21 can be accurately controlled to ensure smooth demolding of the sheet to avoid deformation or damage.

[0041] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A forming die for an aluminum alloy sheet, characterized by: It comprises a base (1), an upper die assembly, an elastic buffer device, a lower die assembly, a hydraulic cylinder (3), an auxiliary mounting structure and a clamping plate (33); The upper surface of the base (1) is fixedly connected to a mounting frame (2), the output end of the hydraulic cylinder (3) is fixedly connected to a threaded rod (4), the side surface of the threaded rod (4) is movably connected to an upper mounting seat (7), the upper mold assembly includes an upper mold base (8) and an upper mold core (802), and the elastic buffer device includes a buffer spring (10) and a damper (9); The upper surface of the base (1) is fixedly connected to an L-shaped bracket (23), and the side surface of the L-shaped bracket (23) is movably connected to a limiting plug rod (24). The lower mold assembly includes a lower mold base (17) and a lower mold core (21). The side surface of the lower mold base (17) is fixedly connected to a cross bar (18). A hydraulic cavity is provided inside the lower mold base (17), and a piston rod (22) is provided in the hydraulic cavity. Resistance wires are fixedly connected to the interiors of the upper mold core (802) and the lower mold base (17). Cooling liquid pipes are provided inside the upper mold base (8) and the lower mold base (17). The auxiliary mounting structure includes a bottom plate (42) and a pull-out plate (46).

2. The aluminum alloy sheet forming die according to claim 1, characterized in that: The hydraulic cylinder (3) is fixedly mounted on the upper surface of the mounting frame (2), the side surface of the threaded rod (4) is threadedly connected to a nut (5), clamping blocks (6) are symmetrically provided on both sides of the output end of the hydraulic cylinder (3), the upper surface of the upper mounting seat (7) is symmetrically provided with clamping grooves, the lower surface of the upper die seat (8) is provided with a mounting groove (801), and the upper die core (802) is installed in the mounting groove (801).

3. The aluminum alloy sheet forming die according to claim 1, characterized in that: The elastic buffer device is installed between the upper die base (8) and the upper die core (802), the upper surface of the upper die core (802) is fixedly connected to a spring seat (11), the two ends of the buffer spring (10) are respectively fixedly connected to the top inner wall of the mounting groove (801) and the spring seat (11), the upper die base (8) and the upper die core (802) are fixedly connected through a damper (9), the lower surface of the upper mounting base (7) is provided with a T-shaped mounting groove (701), the upper surface of the upper die base (8) is fixedly connected to a T-shaped mounting block (12), and the T-shaped mounting block (12) is located in the T-shaped mounting groove (701).

4. The aluminum alloy sheet forming die according to claim 1, characterized in that: The side surface of the upper mounting seat (7) passes through a movable connection limit column (13), the side surface of the limit column (13) contacts the T-shaped mounting block (12), one end of the limit column (13) is fixedly connected to a handheld disk (14), the side surface of the handheld disk (14) is fixedly connected to a return spring (15), one end of the return spring (15) is fixedly connected to the upper mounting seat (7), the upper surface of the upper mounting seat (7) is threadedly connected to a screw (16), and the side surface of the screw (16) is threadedly connected to the T-shaped mounting block (12).

5. The aluminum alloy sheet forming die according to claim 1, characterized in that: A groove body (20) is provided on the upper surface of the lower die base (17), the upper end of the piston rod (22) is fixedly connected to the lower die core (21), and the lower die core (21) is located in the groove body (20). A connecting pipe (19) is provided on the side surface of the lower die base (17), and the connecting pipe (19) is connected to the hydraulic chamber. Vertical rods (33) are symmetrically provided on the side inner wall of the base (1), and the upper surface of the vertical rods (33) is fixedly connected to the clamping plate (35). The side surface of the mounting frame (2) is fixedly connected to the controller (25).

6. The aluminum alloy sheet forming die according to claim 1, characterized in that: A mounting cavity (26) is provided on the side surface of the base (1), an oil tank (27) is fixedly connected to the interior of the mounting cavity (26), a pump body (28) is fixedly connected to the inner wall of the mounting cavity (26), an input end of the pump body (28) is communicated with the oil tank (27), an output end of the pump body (28) is fixedly connected to a pipeline (29), one end of the pipeline (29) is connected to the connecting pipe (19), and a flow meter (30) is provided on the pipeline (29).

7. The aluminum alloy sheet forming die according to claim 5, characterized in that: A displacement sensor (34) is provided on the inner side wall of the vertical rod (33), a rubber pad (36) is fixedly connected to the side surface of the clamping plate (35), a pressure sensor (37) is provided on the side surface of the clamping plate (35), a first motor (31) is fixedly connected to the side surface of the base (1), a bidirectional threaded rod (32) is fixedly connected to the output end of the first motor (31), and the side surface of the bidirectional threaded rod (32) is threadedly connected to the vertical rod (33).

8. The aluminum alloy sheet forming die according to claim 1, characterized in that: A through slot (201) is provided on the side surface of the mounting frame (2), a second motor (38) is fixedly connected to the upper surface of the mounting frame (2), a lead screw (381) is fixedly connected to the output end of the second motor (38), and a displacement block (39) is threadedly connected to the side surface of the lead screw (381).

9. The aluminum alloy sheet forming die according to claim 8, characterized in that: The upper surface of the displacement block (39) is fixedly connected with a mounting column (40), the side surface of the mounting column (40) is rotatably connected to the bottom plate (42), the upper surface of the displacement block (39) is movably connected with a latch (41), the upper surface of the bottom plate (42) is provided with a groove (43), the side inner wall of the groove (43) is fixedly connected with a guide rod (44), the side surface of the guide rod (44) is movably connected with a sleeve (45), the side surface of the sleeve (45) is fixedly connected to the pull-out plate (46), and the side surface of the pull-out plate (46) is fixedly connected with a handle (47).

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