Stamping equipment for high-strength aluminum alloy cover plate production and stamping method thereof

Abstract

The invention relates to the technical field of high-strength aluminum alloy forge piece machining, and discloses stamping equipment for high-strength aluminum alloy cover plate production and a stamping method.The outer side face of an equipment outer base is connected with a center bearing table through a connecting arm, and a stamping support is installed at the front position of the upper end face of the center bearing table; the top of the stamping support is horizontally connected with an air cylinder seat, a stamping air cylinder is vertically installed in the middle of the air cylinder seat, an air cylinder rod is movably arranged in the stamping air cylinder in a downward extending mode, and a rigid pressure seat is welded to the lower end of the air cylinder rod. According to the stamping equipment for producing the high-strength aluminum alloy cover plate and the stamping method of the stamping equipment, by means of moving power of the positioning column, a pressing head of the positioning column generates extrusion acting force on the hydraulic column in the moving process, so that a plug seat pushes hydraulic oil in a hydraulic oil cavity, the hydraulic oil flows outwards from a unique oil hole, and the hydraulic oil is conveyed through a pipeline; and the hydraulic oil is upwards injected into the damping oil bag, so that the damping oil bag is transversely expanded after being filled.

Description

Technical Field

[0001] The invention relates to the technical field of high-strength aluminum alloy forging processing, and in particular to a stamping device and a stamping method for producing a high-strength aluminum alloy cover plate. Background Art

[0002] High-strength aluminum alloy forgings are a widely used type of non-ferrous metal structural materials. They have the advantages of light weight, oxidation resistance, high strength and beautiful appearance. They are widely used in aviation, aerospace, automobile and high-speed rail industries. High-strength aluminum alloy forgings apply external force to aluminum alloy metal billets to cause them to undergo plastic deformation, change size and shape, and improve performance. They are used to manufacture mechanical parts, workpieces and tools, which mainly include forging and stamping processes, so stamping equipment will be used.

[0003] The existing high-strength aluminum alloy stamping equipment has many technical defects when in use. First, the current stamping equipment only has one set of lower dies, and can only load one set of workpieces at a time, and cannot achieve batch loading, resulting in low production efficiency; second, the current lower die has poor seismic performance, and is prone to shaking up and down during long-term stamping, and the lower die and the die groove fit closely, so manual disassembly is time-consuming and labor-intensive; third, when the existing upper die fits and moves in the lower die, there is a strong contact resistance between the two, which reduces the stamping force on the workpiece, and will cause a certain degree of wear to the die after more stamping times.

[0004] In summary, considering that the existing facilities cannot meet the work needs, we propose a stamping equipment and a stamping method for the production of high-strength aluminum alloy cover plates. Summary of the invention

[0005] The main purpose of the present invention is to provide a stamping device and a stamping method for producing a high-strength aluminum alloy cover plate, which can effectively solve the problems in the background technology.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: A stamping device for producing high-strength aluminum alloy cover plates includes an equipment outer base, the outer side surface of the equipment outer base is connected to a central bearing platform via a connecting arm, a stamping bracket is installed at the front position of the upper end surface of the central bearing platform, the top of the stamping bracket is horizontally connected to a cylinder seat, a stamping cylinder is vertically installed in the middle position of the cylinder seat, a cylinder rod is movably provided in the interior of the stamping cylinder and a rigid pressure seat is welded to the lower end of the cylinder rod, and a limiting track for the movement of the rigid pressure seat is vertically installed in the interior of the stamping bracket.

[0007] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, the lower end of the rigid pressure seat is connected to an upper convex movable die through two sets of connecting rods.

[0008] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, a rotating groove is opened at the upper position inside the outer base of the equipment, and a rotating support table is rotatably arranged in the rotating groove.

[0009] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, wherein: a plurality of groups of mold grooves are evenly opened on the upper end surface of the rotating support table, and the number of the mold grooves is preferably 4 or 6 groups, and a concave static mold is movably installed in each group of the mold grooves, a workpiece is horizontally placed in the concave static mold, and the upper convex movable mold moves downward and extends into the interior of the concave static mold.

[0010] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, a driving chamber is opened inside the outer seat of the equipment and below the rotating groove, an annular connecting sleeve is arranged at the middle position of the lower end of the rotating support table, a rotating bearing is fixedly connected to the lower end of the annular connecting sleeve, the damping bearing is vertically passed through by the support column, the support column extends upward and is connected to the central bearing platform, and the bottom of the support column is fixed by a fixed seat and the middle position of the bottom of the outer seat of the equipment.

[0011] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, wherein: a driving wheel is sleeved on the outer side of the damping bearing, and a plurality of groups of strip grooves and guide curved surfaces are evenly distributed on the outer wheel surface of the driving wheel, and the number of the strip grooves and guide curved surfaces is preferably 4 or 6 groups, and the plurality of groups of strip grooves and guide curved surfaces are alternately distributed, and a cam driver is fixed on the outer side surface of the outer seat of the equipment and is located on one side of the driving wheel, and a positioning structure that acts on the cam driver is provided on the inner layer of the outer seat of the equipment.

[0012] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, wherein: a swivel seat is arranged on one side of the support column, and the swivel seat is fixed by an external bearing and the inner wall of the outer seat of the equipment, a guide block which fits with several groups of guide curved surfaces is fixed at the middle position of the upper end surface of the swivel seat, an eccentric column which acts with several groups of strip grooves is welded at the edge position of the upper end surface of the swivel seat, a rotating shaft is welded at the middle position of the lower end surface of the swivel seat, the rotating shaft is connected to a first servo motor, and the first servo motor is vertically fixed on the bottom of the outer seat of the equipment, a No. 1 rotating rod is welded upward at the center position of the guide block, and a No. 1 synchronous sprocket is sleeved on the No. 1 rotating rod.

[0013] As a preferred solution of a stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, the cam transmission device includes a shell, a No. 2 rotating rod, a bearing seat, a No. 2 synchronous sprocket, a cam and a cam surface, the shell is riveted to the outer side surface of the outer seat of the equipment, the shell is a semi-open structure, and a No. 2 rotating rod is vertically rotated inside the shell, and the upper and lower ends of the No. 2 rotating rod are fixed by the bearing seat and the inner wall of the shell, the No. 2 rotating rod is sleeved with a No. 2 synchronous sprocket at the lower position, the No. 2 synchronous sprocket and the No. 1 synchronous sprocket are connected and driven by a chain, and the chain passes through the chain mouth on the outer seat of the equipment, and the No. 2 rotating rod is sleeved with a cam at the upper position, and a cam surface is arranged on the wheel surface of the cam.

[0014] As a preferred scheme of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, the positioning structure includes a wheel seat, a wheel groove, a pulley, a positioning column, a partition, a column hole, a reset spring and a pressure head, a wheel groove is opened on one end face of the wheel seat, a pulley is installed in the wheel groove, a part of the pulley extends out of the wheel groove and contacts the wheel surface of the cam, a positioning column is horizontally welded on the end of the wheel seat away from the wheel groove, a partition is riveted in the inner layer of the outer seat of the equipment, a column hole for the positioning column to slide is opened in the middle of the partition, a reset spring sleeved on the positioning column is fixed between the partition and the wheel seat, a pressure head is welded on the end of the positioning column away from the wheel seat, and positioning grooves for inserting the positioning column are evenly opened on the outer side surface of the rotating bracket table, and each group of the positioning grooves corresponds to the concave static mold respectively.

[0015] As a preferred scheme of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, wherein: curved slots are opened on both sides of the concave static mold, and each group of the curved slots is respectively used for partial extension of the shock-absorbing oil bag, and the outer side of the shock-absorbing oil bag is provided with two combined leaves, and the two combined leaves are hinged on the hinge shaft, and the upper and lower ends of the hinge shaft are fixed to the inner wall of the mold groove, and the lower ends of the two groups of the shock-absorbing oil bags are connected to the oil inlet capillary, and the lower ends of the two groups of the oil inlet capillary are respectively connected to the two ends of the double-headed connecting pipe, and the double-headed connecting pipe is located inside the rotating support table, and the double-headed connecting pipe is connected to the hydraulic oil reservoir through a guide pipe, and the hydraulic oil reservoir is installed in the positioning groove.

[0016] As a preferred scheme of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, the hydraulic oil reservoir includes a reserve cylinder, a hydraulic oil chamber, a sealing column hole, a hydraulic column, a plug seat, a spring and an oil hole, the reserve cylinder is horizontally fixed in the positioning groove, a hydraulic oil chamber is opened inside the reserve cylinder, a sealing column hole connected to the hydraulic oil chamber is opened at the middle position of one end of the reserve cylinder, the sealing column hole is for the hydraulic column to pass through, the hydraulic column is located at one end of the hydraulic oil chamber and is connected to a plug seat that fits the hydraulic oil chamber, the end of the hydraulic column away from the plug seat acts on the pressure head, a spring sleeved on the outside of the hydraulic column is fixed between the plug seat and the sealing column hole, an oil hole is opened at the upper position of the end of the hydraulic oil chamber away from the sealing column hole, and the oil hole is connected to the guide pipe.

[0017] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, a rotating shaft is horizontally arranged in the middle position inside the upper raised movable mold, two groups of external bearings are sleeved on the outer side of the rotating shaft, and the two groups of external bearings are fixed inside the upper raised movable mold, a large gear is sleeved in the middle of the rotating shaft, a small gear is meshed on one side of the large gear, and the small gear is sleeved on the output shaft of the second servo motor, and the second servo motor is fixed through a motor connecting seat and an external bearing.

[0018] As a preferred scheme of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, wherein: screw short shafts are symmetrically welded on both ends of the rotating shaft, the number of the screw short shafts is 2 groups, each group of the screw short shafts is sleeved with a displacement platform, the interior of the displacement platform is equipped with a screw nut sleeve acting on the screw short shaft, a number of groups of square rods are evenly welded on the outer side of the displacement platform, the number of the square rods is preferably 2-5 groups, the interior of the upper convex movable mold is respectively provided with limit rod grooves for the movement of the square rods, resistance plates are fixed at the ends of the several groups of square rods, the two outer side surfaces of the upper convex movable mold are symmetrically provided with receiving grooves for the movement of the resistance plates, the outer side surfaces of the resistance plates are movably provided with elastic pads, and the resistance plates and elastic pads act on the inner wall of the concave static mold.

[0019] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, L-shaped reinforcement rods are symmetrically welded on both sides of the top of the central supporting platform, the number of the L-shaped reinforcement rods is 2 groups, and the lower ends of the L-shaped reinforcement rods are riveted to the outer side surface of the equipment outer base.

[0020] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, the annular connecting sleeve is fixedly connected to the lower end surface of the rotating support table through several groups of ear pieces, and the number of the ear pieces is preferably 6-8 groups.

[0021] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate described in the present invention, a lower groove is provided inside the concave static die.

[0022] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, the rotating support platform rotates around the central bearing platform and the support column.

[0023] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate described in the present invention, wall grooves for accommodating shock-absorbing oil bags are symmetrically opened on the inner wall of the mold groove.

[0024] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, the position of the double-head connecting pipe is slightly higher than the position of the hydraulic oil reservoir.

[0025] As a preferred solution of the stamping equipment for producing high-strength aluminum alloy cover plates described in the present invention, the outer surface of the elastic pad is smooth.

[0026] A stamping method for producing a high-strength aluminum alloy cover plate comprises the following steps: S1: Place the high-strength aluminum alloy workpieces to be stamped into the concave static die in sequence, start the first servo motor, and through a series of transmissions, the entire rotating support table rotates around the support column at a certain angle, so that an adjacent group of concave static dies rotates to the bottom of the upper convex dynamic die and stops.

[0027] S2: When the swivel seat rotates one circle, after a series of transmissions, the cam surface of the cam moves to the pulley position, and the contact between the two generates a force, causing the wheel seat and the positioning column to move horizontally outward. The end of the positioning column is directly inserted into one of the positioning grooves of the rotary bracket. At the same time, the pressure head of the positioning column acts on the hydraulic oil reservoir, so that the hydraulic oil reservoir supplies hydraulic oil, and the hydraulic oil enters the shock-absorbing oil bag. After filling, it expands laterally, and part of the shock-absorbing oil bag enters the corresponding curved slot, so that the concave static mold is locked in the mold groove.

[0028] S3: By starting the stamping cylinder, the cylinder rod extends downward, driving the rigid pressure seat to move downward along the limit track, generating a strong force transmitted to the upper convex movable die. The convex cooperates with the lower groove to generate pressure on the high-strength aluminum alloy workpiece between the two, causing it to deform into a cover plate.

[0029] The present invention provides a stamping device and a stamping method for producing a high-strength aluminum alloy cover plate through improvement, which has the following significant improvements and advantages compared with the prior art: Start the first servo motor, the rotating shaft drives the rotating seat to rotate one circle, first enters one group of strip grooves of the driving wheel, and interacts with the strip grooves, causing the driving wheel to rotate a certain angle. The entire rotating bracket table rotates a certain angle around the supporting column, so that an adjacent group of concave static molds move to the bottom of the upper convex dynamic mold and stop, achieving the purpose of cyclic loading, which can perform continuous stamping and improve work efficiency.

[0030] With the help of the power of the rotation of the rotating seat, the cam also rotates synchronously for one circle through a series of transmissions of the sprocket structure. When the rotating bracket stops moving, the cam surface of the cam just moves to the pulley position, and the contact between the two generates a force, causing the wheel seat and the positioning column to move horizontally outward. The end of the positioning column is directly inserted into one of the positioning grooves at the stop position of the rotating bracket, forming a limited support for the rotating bracket, preventing the rotating bracket from moving during the stamping process, improving its stability and pressure resistance, and reducing the power source.

[0031] With the help of the power of the positioning column movement, the pressure head of the positioning column generates an extrusion force on the hydraulic column during the movement, causing the plug seat to push the hydraulic oil in the hydraulic oil chamber, and the oil flows outward from the only oil hole. After being transported by the pipeline, the hydraulic oil is injected upward from the oil inlet tube into the shock-absorbing oil bag, so that the shock-absorbing oil bag expands laterally after being filled, and part of the shock-absorbing oil bag enters the corresponding curved slot. On the one hand, the concave static mold is locked in the mold slot through the connection of the two groups of shock-absorbing oil bags, so as to achieve the effect of limit locking. On the other hand, the vibration force generated by the concave static mold during the stamping process can be offset by the shock-absorbing oil bag, thereby improving the seismic effect of the concave static mold.

[0032] The second servo motor is turned on to drive the small gear to rotate. After a series of transmissions, the respective displacement tables are caused to move linearly outward on the short shaft of the screw. On the one hand, the elastic pad can be pushed partially out of the storage groove to contact the inner wall of the concave static mold, and the elastic force and sliding force are generated simultaneously to reduce the friction resistance and vibration force during the stamping movement and improve the stamping effect; on the other hand, the resistance plate is driven to partially extend out of the storage groove to contact the inner wall of the concave static mold. The two groups of resistance plates form an internal support clamping state for the concave static mold, and then the cylinder rod is returned upward, and the upper convex dynamic mold drives the concave static mold to move upward, and the concave static mold is guided out of the mold groove, so as to achieve the purpose of automatically disassembling the concave static mold, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of a stamping device for producing a high-strength aluminum alloy cover plate according to the present invention in one direction; Figure 2 It is a schematic diagram of the overall structure of a stamping device for producing a high-strength aluminum alloy cover plate according to the present invention from another direction; Figure 3It is a schematic diagram of the specific structure of the stamping bracket of the present invention; Figure 4 It is a schematic diagram of the internal structure of the driving chamber of the present invention; Figure 5 It is a schematic diagram of the lower end structure of the rotary support platform of the present invention; Figure 6 It is a schematic diagram of the external connection structure of the transposition of the present invention; Figure 7 It is a schematic diagram of the specific structure of the cam transmission device of the present invention; Figure 8 It is a specific structural schematic diagram of the positioning structure of the present invention; Fig. 9 It is a schematic diagram of the internal structure of the mold groove of the present invention; Fig.10 This is a schematic diagram of the external connection of the hydraulic oil reservoir of the present invention; Fig.11 is a cross-sectional view of a hydraulic oil reservoir of the present invention; Fig.12 This is a schematic diagram of the installation position of the elastic pad of the present invention; Fig.13 It is a schematic diagram of the internal structure of the upper convex movable mold of the present invention.

[0034] In the figure: 1. Equipment outer base; 2. Connecting arm; 3. Center bearing platform; 4. Rotating groove; 5. Rotating support platform; 6. Mold groove; 7. Concave static mold; 8. Cam driver; 80. Housing; 81. No. 2 rotating rod; 82. Bearing seat; 83. No. 2 synchronous sprocket; 84. Cam; 85. Cam surface; 9. Positioning structure; 91. Wheel seat; 92. Wheel groove; 93. Pulley; 94. Positioning column; 95. Partition plate; 96. Column hole; 9 7. Reset spring; 98. Pressure head; 10. Stamping bracket; 11. Cylinder seat; 12. Stamping cylinder; 13. Cylinder rod; 14. Rigid pressure seat; 15. Limiting track; 16. Connecting rod; 17. Upper raised movable mold; 20. Driving chamber; 21. Annular connecting sleeve; 22. Damping bearing; 23. Support column; 24. Fixed seat; 25. Driving wheel; 26. Strip groove; 27. Guide curved surface; 30. Rotating seat; 31. Connecting bearing; 3 2. Eccentric column; 33. Guide block; 34. Rotating shaft; 35. First servo motor; 36. Rotating rod No. 1; 37. Synchronous sprocket No. 1; 38. Chain; 40. Curved slot; 41. Shock-absorbing oil bag; 42. Hinge; 43. Hinge shaft; 44. Oil inlet capillary; 45. Double-head connecting pipe; 46. Guide pipe; 47. Hydraulic oil reservoir; 471. Reserve cylinder; 472. Hydraulic oil chamber; 473. Sealing column hole; 474. Hydraulic column; 475. Plug seat; 476. Spring; 477. Oil hole; 50. Rotating shaft; 51. External bearing; 52. Large gear; 53. Small gear; 54. Second servo motor; 55. Motor connecting seat; 60. Screw short shaft; 61. Translation table; 62. Screw nut sleeve; 63. Square rod; 64. Resistance plate; 65. Elastic pad; 66. Storage groove; 70. L-shaped reinforcement rod; 71. Ear piece; 72. Positioning groove; 73. Lower groove. DETAILED DESCRIPTION

[0035] 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. Embodiment 1

[0036] like Figure 1-11 As shown, this embodiment provides a stamping equipment for the production of high-strength aluminum alloy cover plates, including an equipment outer base 1, the outer side surface of the equipment outer base 1 is connected to a central supporting platform 3 through a connecting arm 2, a stamping bracket 10 is installed at the front position of the upper end surface of the central supporting platform 3, the top of the stamping bracket 10 is horizontally connected to a cylinder seat 11, and a stamping cylinder 12 is vertically installed in the middle position of the cylinder seat 11.

[0037] Specifically, a cylinder rod 13 is movably provided in the punching cylinder 12 and extends downward. A rigid pressure seat 14 is welded to the lower end of the cylinder rod 13. A limiting track 15 for the rigid pressure seat 14 to move is vertically installed in the punching bracket 10. The limiting track 15 plays a role of limiting guide. The lower end of the rigid pressure seat 14 is connected to an upper convex movable die 17 through two sets of connecting rods 16. Figure 1-3 shown.

[0038] Furthermore, a rotating groove 4 is provided at the upper position of the outer base 1 of the equipment, and a rotating support platform 5 is rotatably arranged in the rotating groove 4, and the sizes of the two are adapted to each other. Figure 1 and 2 shown.

[0039] Among them, the upper end surface of the rotating support table 5 is evenly provided with a plurality of groups of die grooves 6, each group of die grooves 6 is movably installed with a concave static die 7, the interior of the concave static die 7 is provided with a lower groove 73, a workpiece (forged aluminum alloy forging) is horizontally placed in the concave static die 7, the upper convex movable die 17 moves downward and extends into the interior of the concave static die 7, and there is a fitting relationship between the upper convex movable die 17 and the concave static die 7, so as to ensure that the size of the stamped workpiece is accurate and the thickness is uniform. Figure 1 , 2 and 9.

[0040] Furthermore, a driving chamber 20 is provided inside the outer seat 1 of the equipment and below the rotating groove 4. An annular connecting sleeve 21 is provided at the middle position of the lower end of the rotating bracket 5. The annular connecting sleeve 21 is fixedly connected to the lower end surface of the rotating bracket 5 through a plurality of groups of ear pieces 71. The ear pieces 71 play a role in connection reinforcement. A damping bearing 22 (the damping bearing 22 includes an outer sleeve and an inner sleeve) is fixedly connected to the lower end of the annular connecting sleeve 21. The damping bearing 22 has a certain damping force to prevent the rotating bracket 5 from rotating due to inertia. Figure 4 and 5 shown.

[0041] Among them, the damping bearing 22 is for the support column 23 to pass vertically, the support column 23 extends upward and is connected to the central bearing platform 3, a reinforcement bearing is arranged between the upper end of the support column 23 and the rotating bracket 5, the bottom of the support column 23 is fixed by the fixing seat 24 and the middle position of the bottom of the equipment outer seat 1, and the rotating bracket 5 rotates around the central bearing platform 3 and the support column 23, as shown in FIG. Figure 5 shown.

[0042] The outer side of the damping bearing 22 is sleeved with a driving wheel 25, and the outer wheel surface of the driving wheel 25 is evenly distributed with a plurality of strip grooves 26 and guide curved surfaces 27, and the plurality of strip grooves 26 and guide curved surfaces 27 are alternately distributed, such as Figure 5 shown.

[0043] Furthermore, a swivel seat 30 is provided on one side of the support column 23, and the swivel seat 30 is fixed by connecting the bearing 31 and the inner wall of the device outer seat 1, as shown in FIG. Figure 5 and 6 shown.

[0044] In this embodiment, a guide block 33 that fits with a plurality of guide curved surfaces 27 is fixed at the middle position of the upper end surface of the rotating seat 30. The outer surfaces of the guide curved surfaces 27 and the guide block 33 fit fully with each other during the movement. Figure 6 shown.

[0045] In this embodiment, an eccentric column 32 is welded at the edge of the upper end surface of the rotating seat 30 to interact with a plurality of groups of strip grooves 26. The thickness of the eccentric column 32 is adapted to the width of the strip grooves 26. Figure 6 shown.

[0046] A rotating shaft 34 is welded at the middle position of the lower end surface of the rotating seat 30, and the rotating shaft 34 is connected to a first servo motor 35, and the first servo motor 35 is vertically fixed on the bottom of the outer seat 1 of the equipment. Figure 5 and 6 shown.

[0047] A rotating rod 36 is welded to the center of the guide block 33 and is sleeved with a synchronous sprocket 37. Figure 6 shown.

[0048] Furthermore, a cam driver 8 is fixed on the outer side of the device outer base 1 and on one side of the driving wheel 25, such as Figure 6 shown.

[0049] Specifically, the cam driver 8 includes a housing 80, a second rotating rod 81, a bearing seat 82, a second synchronous sprocket 83, a cam 84 and a cam surface 85. Figure 7 shown.

[0050] In this embodiment, the shell 80 is riveted to the outer side surface of the equipment outer base 1. The shell 80 is a semi-open structure. A second rotating rod 81 is vertically rotated inside the shell 80. The upper and lower ends of the second rotating rod 81 are fixed by the bearing seat 82 and the inner wall of the shell 80. A second synchronous sprocket 83 is sleeved on the lower position of the second rotating rod 81. The second synchronous sprocket 83 and the first synchronous sprocket 37 are connected for transmission through a chain 38. The second synchronous sprocket 83 and the first synchronous sprocket 37 are the same size, and the chain 38 passes through the chain opening on the equipment outer base 1.

[0051] In this embodiment, a cam 84 is sleeved on the upper position of the second rotating rod 81, and a cam surface 85 is provided on the wheel surface of the cam 84. The initial positions of the cam surface 85 and the initial positions of the eccentric column 32 are set according to actual needs.

[0052] Furthermore, the inner layer of the outer base 1 of the equipment is provided with a positioning structure 9 that interacts with the cam actuator 8, such as Figure 6 shown.

[0053] Specifically, the positioning structure 9 includes a wheel seat 91, a wheel groove 92, a pulley 93, a positioning column 94, a partition 95, a column hole 96, a return spring 97 and a pressure head 98. Figure 8 shown.

[0054] In this embodiment, a wheel groove 92 is formed on one end face of the wheel seat 91, and a pulley 93 is installed in the wheel groove 92. A portion of the pulley 93 extends out of the wheel groove 92 and contacts the wheel surface of the cam 84. A positioning column 94 is horizontally welded to the end of the wheel seat 91 away from the wheel groove 92.

[0055] In this embodiment, a partition 95 is riveted in the inner layer of the outer base 1 of the equipment, and a column hole 96 for the positioning column 94 to slide is opened in the middle of the partition 95. The column hole 96 serves as a limiting guide. A reset spring 97 sleeved on the positioning column 94 is fixed between the partition 95 and the wheel seat 91. The reset spring 97 is used to maintain the contact force between the pulley 93 and the cam 84. A pressure head 98 is welded on the end of the positioning column 94 away from the wheel seat 91, and a positioning groove 72 for the positioning column 94 to be inserted is evenly opened around the outer side surface of the rotating bracket 5.

[0056] Each group of positioning grooves 72 corresponds to the concave static mold 7 respectively.

[0057] Furthermore, curved slots 40 are provided on both sides of the concave static mold 7. Each set of curved slots 40 is respectively provided for a part of the damping oil bag 41 to extend therein. The damping oil bag 41 has the performance of deformation restoration. Fig. 9 shown.

[0058] Among them, the outer side of the shock-absorbing oil bag 41 is fixedly connected with two combined leaf pieces 42, and the two combined leaf pieces 42 are hinged on the hinge shaft 43. The hinge piece 42 opens and closes around the hinge shaft 43, and the upper and lower ends of the hinge shaft 43 are fixed to the inner wall of the mold groove 6 (the inner wall of the mold groove 6 is symmetrically provided with wall grooves for accommodating the shock-absorbing oil bag 41, and the wall grooves play the role of accommodating and limiting). Fig. 9 and 10 shown.

[0059] Among them, the lower ends of the two groups of shock-absorbing oil bags 41 are connected to the oil inlet tubes 44, and the lower ends of the two groups of oil inlet tubes 44 are respectively connected to the two ends of the double-headed connecting tube 45. The double-headed connecting tube 45 is located inside the rotating support platform 5. The double-headed connecting tube 45 and the oil inlet tube 44 are both capillary oil tubes. The double-headed connecting tube 45 is connected to the hydraulic oil reservoir 47 through the guide tube 46. The position of the double-headed connecting tube 45 is slightly higher than the position of the hydraulic oil reservoir 47, which is convenient for the hydraulic oil to flow back to the hydraulic oil reservoir 47. The hydraulic oil reservoir 47 is installed in the positioning groove 72, such as Fig.10 shown.

[0060] Specifically, the hydraulic oil reservoir 47 includes a reserve cylinder 471, a hydraulic oil chamber 472, a sealing column hole 473, a hydraulic column 474, a plug seat 475, a spring 476 and an oil hole 477. Fig.11 shown.

[0061] In this embodiment, the reserve cylinder 471 is horizontally fixed in the positioning groove 72, and a hydraulic oil chamber 472 is opened inside the reserve cylinder 471. A sealing column hole 473 connected to the hydraulic oil chamber 472 is opened at the middle position of one end of the reserve cylinder 471. The sealing column hole 473 is for the hydraulic column 474 to pass through, and the sealing column hole 473 serves as a sealing guide.

[0062] In this embodiment, the hydraulic column 474 is located at one end of the hydraulic oil chamber 472 and is connected to a plug seat 475 that fits the hydraulic oil chamber 472. The end of the hydraulic column 474 away from the plug seat 475 acts on the pressure head 98. A spring 476 that is sleeved on the outside of the hydraulic column 474 is fixed between the plug seat 475 and the sealing column hole 473. After being compressed, the spring 476 generates an elastic force that drives the plug seat 475 to automatically reset. An oil hole 477 is opened at the upper position of the end of the hydraulic oil chamber 472 away from the sealing column hole 473, and the oil hole 477 is connected to the guide tube 46.

[0063] Furthermore, L-shaped reinforcement rods 70 are symmetrically welded on both sides of the top of the central bearing platform 3, and the lower ends of the L-shaped reinforcement rods 70 are riveted to the outer side of the equipment outer base 1 to play a role in connection and fixing. Figure 1 shown.

[0064] When this embodiment is in use, the high-strength aluminum alloy workpiece to be stamped is sequentially placed into the concave static mold 7, and then the first servo motor 35 is started, and the rotating shaft 34 drives the rotating seat 30 to rotate one circle. During this process, the eccentric column 32 on the rotating seat 30 makes a circular motion, first entering into one group of strip grooves 26 of the driving wheel 25, and interacting with the strip grooves 26, causing the driving wheel 25 to rotate a certain angle (60° or 90°), and the entire rotating bracket 5 rotates a certain angle around the supporting column 23, so that an adjacent group of concave static molds 7 rotate and move to stop just below the upper convex movable mold 17, forming a circular feeding, and then the eccentric column 32 moves out of the strip groove 26 and returns to the initial position.

[0065] When the rotating seat 30 rotates one circle, the No. 1 rotating rod 36 drives the No. 1 synchronous sprocket 37 to rotate one circle, and is connected and transmitted through the chain 38, so that the No. 2 synchronous sprocket 83 drives the No. 2 rotating rod 81 to rotate one circle, and the coaxial cam 84 also rotates one circle synchronously. During the movement of the rotating bracket 5, the curved surface of the cam 84 keeps in contact with the pulley 93 on the positioning structure 9 (the positioning column 94 is located outside the positioning groove 72). When the rotating bracket 5 stops moving, the cam surface 85 of the cam 84 just moves to the position of the pulley 93, and the contact between the two generates a force, so that the wheel seat 91 and the positioning column 94 move horizontally outward (the reset spring 97 is compressed during the movement), and the end of the positioning column 94 is directly inserted into one of the groups of positioning grooves 72 at the stop position of the rotating bracket 5, forming a limiting support for the rotating bracket 5.

[0066] At the same time, the pressure head 98 of the positioning column 94 generates an extrusion force on the hydraulic column 474 of the hydraulic oil reservoir 47 during the movement, causing the hydraulic column 474 to move inward, causing the plug seat 475 to push the hydraulic oil in the hydraulic oil chamber 472, and the hydraulic oil flows outward from the only oil hole 477, and is injected into the double-headed connecting tube 45 through the guide tube 46. Then, the double-headed connecting tube 45 is respectively injected upward into the two groups of oil inlet capillaries 44. The hydraulic oil in the oil inlet capillaries 44 is injected upward into the shock-absorbing oil bag 41, so that the shock-absorbing oil bag 41 expands laterally after being filled (the longitudinal movement of the shock-absorbing oil bag 41 is restricted by the wall groove), and a part of the shock-absorbing oil bag 41 enters the corresponding curved slot 40, filling the entire curved slot 40, and the concave static mold 7 is locked in the mold groove 6 through the connection of the two groups of shock-absorbing oil bags 41.

[0067] At this time, by starting the stamping cylinder 12, the cylinder rod 13 extends downward, driving the rigid pressure seat 14 to move downward along the limiting track 15, generating a strong force transmitted to the upper convex movable die 17, causing the upper convex movable die 17 to perform a downward rigid stamping movement, and the upper convex movable die 17 enters the concave static die 7, and the convexity cooperates with the lower groove 73 to generate pressure on the high-strength aluminum alloy workpiece between the two, causing it to deform into a cover plate. Embodiment 2

[0068] On the basis of the first embodiment, when the existing upper convex movable die 17 moves in the lower concave static die 7, there is contact resistance between the two, thereby reducing the punching force on the workpiece. After the number of punching times increases, the die will also be worn to a certain extent. In order to solve the above problems, we have the following design, such as Figure 12-13 shown.

[0069] Specifically, a rotating shaft 50 is horizontally arranged in the middle of the upper convex movable mold 17, and two sets of outer bearings 51 are sleeved on the outer side of the rotating shaft 50. The rotating shaft 50 rotates around the two sets of outer bearings 51, and the two sets of outer bearings 51 are fixed inside the upper convex movable mold 17. Fig.13 shown.

[0070] A large gear 52 is sleeved in the middle of the rotating shaft 50, a small gear 53 is meshed on one side of the large gear 52, and the small gear 53 is sleeved on the output shaft of the second servo motor 54. The second servo motor 54 is fixed by a motor connecting seat 55 and an outer bearing 51. Fig.13 shown.

[0071] The two ends of the rotating shaft 50 are symmetrically welded with screw short shafts 60, and each set of screw short shafts 60 is sleeved with a displacement platform 61, and the displacement platform 61 is internally installed with a screw nut sleeve 62 acting on the screw short shaft 60. Fig.13 shown.

[0072] Furthermore, a plurality of groups of square rods 63 are uniformly welded on the outer side of the displacement table 61, and limit rod grooves for the movement of the square rods 63 are respectively provided inside the upper convex movable mold 17, and the limit rod grooves play the role of limit guides. Resistance plates 64 are fixed to the ends of the plurality of groups of square rods 63, and a plurality of groups of anti-slip grooves are provided on the outer surface of the resistance plates 64. The two outer side surfaces of the upper convex movable mold 17 are symmetrically provided with receiving grooves 66 for the movement of the resistance plates 64, and the receiving grooves 66 play the role of receiving and limiting. Fig.12 and 13 shown.

[0073] Among them, the outer side surface of the resistance plate 64 is movably provided with an elastic pad 65 (for snap connection or sleeve connection), the outer surface of the elastic pad 65 is smooth and has a certain rubber elasticity, and the resistance plate 64 and the elastic pad 65 act on the inner wall of the concave static mold 7, such as Fig.12 and 13 shown.

[0074] When the present embodiment is in use, the elastic pads 65 are first installed on the two groups of resistance plates 64, and then when the upper convex movable mold 17 enters the lower concave static mold 7, the second servo motor 54 is turned on to drive the small gear 53 to rotate, and the large gear 52 is decelerated by meshing. The rotating shaft 50 drives the two groups of screw short shafts 60 to rotate, causing the respective displacement platforms 61 to move linearly outward on the screw short shafts 60 (the spiral patterns on the screw nut sleeve 62 and the screw short shafts 60 interact with each other), pushing the elastic pads 65 to partially extend out of the receiving groove 66 to contact the inner wall of the lower concave static mold 7, thereby synchronously generating elastic force and sliding force, thereby reducing the friction resistance and vibration force during the stamping movement.

[0075] When it is necessary to remove the concave static mold 7 in the mold groove 6, first remove the elastic pads 65 on the two groups of resistance plates 64, and under the condition that the shock-absorbing oil bag 41 contracts, let the upper convex movable mold 17 completely enter the concave static mold 7, and then start the second servo motor 54. After the above series of transmissions, the rotating shaft 50 drives the two groups of screw short shafts 60 to rotate, causing the respective displacement tables 61 to move linearly outward, driving the resistance plates 64 to partially extend out of the receiving grooves 66 to contact the inner wall of the concave static mold 7. The two groups of resistance plates 64 form an internal support and clamping state for the concave static mold 7. At this time, let the cylinder rod 13 return upward, and the upper convex movable mold 17 drives the concave static mold 7 to move upward, and the concave static mold 7 is guided out of the mold groove 6.

[0076] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0077] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stamping device for producing high-strength aluminum alloy cover plates, comprising an equipment outer base (1), characterized in that: The outer side surface of the outer seat (1) of the equipment is connected to a central bearing platform (3) via a connecting arm (2); a stamping bracket (10) is installed at the front position of the upper end surface of the central bearing platform (3); the top of the stamping bracket (10) is horizontally connected to a cylinder seat (11); a stamping cylinder (12) is vertically installed in the middle position of the cylinder seat (11); a cylinder rod (13) is movably provided in the interior of the stamping cylinder (12) and extends downward; a rigid pressure seat (14) is welded to the lower end of the cylinder rod (13); a limiting track (15) for the rigid pressure seat (14) to move is vertically installed in the interior of the stamping bracket (10); and the lower end of the rigid pressure seat (14) is connected to an upper convex movable mold (17) via two sets of connecting rods (16); A rotating groove (4) is provided at an upper position inside the outer base (1) of the equipment, a rotating support table (5) is rotatably provided inside the rotating groove (4), a plurality of groups of mold grooves (6) are evenly provided on the upper end surface of the rotating support table (5), a concave static mold (7) is movably installed in each group of the mold grooves (6), a workpiece is horizontally placed in the concave static mold (7), and the upper convex movable mold (17) moves downward and extends into the interior of the concave static mold (7); A driving chamber (20) is provided inside the device outer seat (1) and below the rotating groove (4); an annular connecting sleeve (21) is provided at the middle position of the lower end of the rotating support platform (5); a damping bearing (22) is fixedly connected to the lower end of the annular connecting sleeve (21); a support column (23) vertically passes through the damping bearing (22); the support column (23) extends upward and is connected to the central bearing platform (3); and the bottom of the support column (23) is fixed by a fixing seat (24) and the middle position of the bottom of the device outer seat (1).

2. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 1, characterized in that: The outer side of the damping bearing (22) is sleeved with a driving wheel (25), and the outer wheel surface of the driving wheel (25) is evenly distributed with a plurality of groups of strip grooves (26) and guide curved surfaces (27), and the plurality of groups of strip grooves (26) and guide curved surfaces (27) are alternately distributed. A cam driver (8) is fixed on the outer side surface of the device outer seat (1) and located on one side of the driving wheel (25), and a positioning structure (9) that interacts with the cam driver (8) is provided on the inner layer of the device outer seat (1).

3. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 2, characterized in that: A swivel seat (30) is provided on one side of the support column (23). The swivel seat (30) is fixed by connecting a bearing (31) and the inner wall of the device outer seat (1). A guide block (33) that fits with a plurality of guide curved surfaces (27) is fixed at the middle position of the upper end surface of the swivel seat (30). An eccentric column (32) that interacts with a plurality of strip grooves (26) is welded at the edge position of the upper end surface of the swivel seat (30). A rotating shaft (34) is welded at the middle position of the lower end surface of the swivel seat (30). The rotating shaft (34) is connected to a first servo motor (35). The first servo motor (35) is vertically fixed on the bottom of the device outer seat (1). A first rotating rod (36) is welded upwardly at the center position of the guide block (33). A first synchronous sprocket (37) is sleeved on the first rotating rod (36).

4. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 3 is characterized in that: The cam driver (8) comprises a housing (80), a second rotating rod (81), a bearing seat (82), a second synchronous sprocket (83), a cam (84) and a cam surface (85); the housing (80) is riveted to the outer side surface of the device outer seat (1); the housing (80) is a semi-open structure; a second rotating rod (81) is vertically rotatably arranged inside the housing (80); the upper and lower ends of the second rotating rod (81) are fixed by the bearing seat (82) and the inner wall of the housing (80); the second synchronous sprocket (83) is sleeved at the lower position of the second rotating rod (81); the second synchronous sprocket (83) and the first synchronous sprocket (37) are connected and driven by a chain (38); the chain (38) passes through the chain opening on the device outer seat (1); the cam (84) is sleeved at the upper position of the second rotating rod (81); and the cam surface (85) is arranged on the wheel surface of the cam (84).

5. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 4 is characterized in that: The positioning structure (9) comprises a wheel seat (91), a wheel groove (92), a pulley (93), a positioning column (94), a partition (95), a column hole (96), a return spring (97) and a pressure head (98). A wheel groove (92) is provided on one end surface of the wheel seat (91). A pulley (93) is installed in the wheel groove (92). A portion of the pulley (93) extends out of the wheel groove (92) and contacts the wheel surface of the cam (84). A positioning column (94) is horizontally welded to one end of the wheel seat (91) away from the wheel groove (92). The outer seat (1) of the device ) is riveted to the inner layer of the rotating support (5), a column hole (96) for the positioning column (94) to slide is provided in the middle of the rotating support (5), a return spring (97) sleeved on the positioning column (94) is fixed between the rotating support (5) and the wheel seat (91), a pressure head (98) is welded to the end of the positioning column (94) away from the wheel seat (91), and positioning grooves (72) for the positioning column (94) to be inserted are uniformly provided on the outer side surface of the rotating support (5), and each group of the positioning grooves (72) corresponds to the concave static mold (7).

6. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 5, characterized in that: The two side surfaces of the concave static mold (7) are provided with curved slots (40), each group of the curved slots (40) is respectively provided for a part of the shock-absorbing oil bag (41) to extend therein, the outer side surface of the shock-absorbing oil bag (41) is provided with two combined leaf pieces (42), the two combined leaf pieces (42) are hinged on a hinge shaft (43), the upper and lower ends of the hinge shaft (43) are fixed to the inner wall of the mold groove (6), the lower ends of the two groups of the shock-absorbing oil bags (41) are both connected to an oil inlet fine tube (44), the lower ends of the two groups of the oil inlet fine tube (44) are respectively connected to the two ends of a double-headed connecting pipe (45), the double-headed connecting pipe (45) is located inside the rotary support platform (5), the double-headed connecting pipe (45) is connected to a hydraulic oil reservoir (47) through a guide pipe (46), and the hydraulic oil reservoir (47) is installed in the positioning groove (72).

7. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 6, characterized in that: The hydraulic oil reservoir (47) comprises a reserve cylinder (471), a hydraulic oil chamber (472), a sealing column hole (473), a hydraulic column (474), a plug seat (475), a spring (476) and an oil hole (477); the reserve cylinder (471) is horizontally fixed in the positioning groove (72); a hydraulic oil chamber (472) is provided inside the reserve cylinder (471); a sealing column hole (473) connected to the hydraulic oil chamber (472) is provided at a middle position of one end of the reserve cylinder (471); the sealing column hole (473) is provided for the hydraulic column (474) to The hydraulic column (474) is located at one end of the hydraulic oil chamber (472) and is connected to a plug seat (475) that fits the hydraulic oil chamber (472). The end of the hydraulic column (474) that is away from the plug seat (475) interacts with the pressure head (98). A spring (476) that is sleeved on the outside of the hydraulic column (474) is fixed between the plug seat (475) and the sealing column hole (473). An oil hole (477) is opened at an upper position of one end of the hydraulic oil chamber (472) that is away from the sealing column hole (473). The oil hole (477) is connected to the guide tube (46).

8. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 7, characterized in that: A rotating shaft (50) is horizontally arranged in the middle position inside the upper convex movable mold (17), and two groups of external bearings (51) are sleeved on the outer side of the rotating shaft (50). Both groups of external bearings (51) are fixed inside the upper convex movable mold (17). A large gear (52) is sleeved on the middle part of the rotating shaft (50), and a small gear (53) is meshedly arranged on one side of the large gear (52). The small gear (53) is sleeved on the output shaft of a second servo motor (54), and the second servo motor (54) is fixed via a motor connecting seat (55) and the external bearings (51).

9. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 8, characterized in that: Screw stubs (60) are symmetrically welded to the two ends of the rotating shaft (50), and each group of the screw stubs (60) is sleeved with a displacement platform (61). A screw nut sleeve (62) acting on the screw stubs (60) is installed inside the displacement platform (61). A plurality of groups of square rods (63) are uniformly welded to the outer side surface of the displacement platform (61). Limit rod grooves for the square rods (63) to move are respectively provided inside the upper convex movable die (17). Resistance plates (64) are fixed to the ends of the plurality of groups of square rods (63). Receiving grooves (66) for the resistance plates (64) to move are symmetrically provided on the two outer side surfaces of the upper convex movable die (17). An elastic pad (65) is movably provided on the outer side surface of the resistance plate (64). The resistance plate (64) and the elastic pad (65) act on the inner wall of the concave static die (7).

10. A stamping method for producing high-strength aluminum alloy cover plates, applied to the stamping equipment for producing high-strength aluminum alloy cover plates as described in claim 9, characterized in that The following steps are involved: S1: placing the high-strength aluminum alloy workpieces to be stamped into the concave static die (7) in sequence, starting the first servo motor (35), and through a series of transmissions, causing the entire rotary support table (5) to rotate around the support column (23) at a certain angle, so that a group of adjacent concave static dies (7) rotate and move to stop just below the upper convex movable die (17); S2: When the rotating seat rotates one circle, after a series of transmissions, the cam surface (85) of the cam (84) moves to the position of the pulley (93), and the two contact to generate a force, so that the wheel seat (91) and the positioning column (94) move horizontally outward, and the end of the positioning column (94) is directly inserted into one of the positioning grooves (72) of the rotating support table (5). At the same time, the pressure head (98) of the positioning column (94) acts on the hydraulic oil reservoir (47), so that the hydraulic oil reservoir (47) supplies hydraulic oil, and the hydraulic oil enters the shock-absorbing oil bag (41). After filling, it expands laterally, and a part of the shock-absorbing oil bag (41) enters the corresponding curved slot (40), so that the concave static mold (7) is locked in the mold groove (6); S3: By starting the punching cylinder (12), the cylinder rod (13) extends downward, driving the rigid pressure seat (14) to move downward along the limit track (15), generating a strong force transmitted to the upper protruding movable die (17), and the protrusion cooperates with the lower groove (73) to generate pressure on the high-strength aluminum alloy workpiece between the two, causing it to deform into a cover plate.

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