A stamping device for producing high-strength aluminum alloy cover plates and its stamping method

Abstract

The present invention relates to the technical field of high-strength aluminum alloy forging processing, and discloses a stamping device and a stamping method for producing high-strength aluminum alloy covers. The outer side of the outer seat of the device is connected with a central bearing platform through a connecting arm. A stamping bracket is installed at a position close to the front end of the upper end surface of the central bearing platform. The top of the stamping bracket is horizontally connected with a cylinder seat. A stamping cylinder is vertically installed at the middle position of the cylinder seat. A cylinder rod extends downwardly and movably inside the stamping cylinder. The lower end of the cylinder rod is welded with a rigid pressure seat. For the stamping device and the stamping method for producing high-strength aluminum alloy covers of the present invention, by means of the power of the movement of the positioning column, the pressing head of the positioning column generates a squeezing force on the hydraulic column during the movement, causing the plug seat to push the hydraulic oil in the hydraulic oil cavity, and the hydraulic oil flows out through the only oil hole. Through the conveying of the pipeline, the hydraulic oil is injected upward into the shock-absorbing oil bag, so that the shock-absorbing oil bag expands laterally after being filled.

Description

Technical Field

[0001] The present invention relates to the technical field of high-strength aluminum alloy forging processing, and particularly relates to a stamping device and a stamping method for producing high-strength aluminum alloy covers. Background Technique

[0002] High-strength aluminum alloy forgings are a type of non-ferrous metal structural material with relatively wide applications. They have the advantages of light weight, oxidation resistance, high strength, and beautiful appearance, and are widely used in the aerospace, aviation, automotive, and high-speed rail industries. High-strength aluminum alloy forgings apply external forces to aluminum alloy metal blanks to cause plastic deformation, change dimensions, shapes, and improve properties, and are used to manufacture mechanical parts, workpieces, and tools, mainly including two processes: forging and stamping. Therefore, stamping equipment will be used.

[0003] Existing high-strength aluminum alloy stamping equipment has many technical defects when in use. First, the current stamping equipment only has a set of lower dies, and only one set of workpieces can be loaded at a time, unable to achieve batch loading, resulting in low production efficiency. Second, the current lower die has poor seismic resistance and is prone to shaking up and down during long-term stamping. Moreover, the lower die fits tightly with the die groove, and manual disassembly is time-consuming and laborious. Third, when the existing upper die fits and moves inside the lower die, there is a strong contact resistance between the two, thereby reducing the stamping force on the workpiece, and it will also cause a certain degree of wear to the die after multiple stamping times.

[0004] In summary, considering that the existing facilities cannot meet the working requirements, for this reason, we propose a stamping device and a stamping method for producing high-strength aluminum alloy covers. Summary of the Invention

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

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A stamping device for producing high-strength aluminum alloy covers includes an outer seat of the device. The outer side of the outer seat of the device is connected with a central bearing platform through a connecting arm. A stamping support is installed at a position close to the front end of the upper end surface of the central bearing platform. The top of the stamping support is horizontally connected with a cylinder seat. A stamping cylinder is vertically installed at the middle position of the cylinder seat. A cylinder rod extends downwardly and movably inside the stamping cylinder. The lower end of the cylinder rod is welded with a rigid pressure seat. A limiting track for the movement of the rigid pressure seat is vertically installed inside the stamping support.

[0008] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: the lower end of the rigid pressure seat is connected to an upper convex moving die through 2 groups of connecting rods.

[0009] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: a rotating groove is provided at an upper position inside the outer seat of the equipment, and a rotary support table is rotatably arranged in the rotating groove.

[0010] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: a plurality of groups of die grooves are evenly provided on the upper end surface of the rotary support table, the number of the die grooves is preferably 4 or 6 groups, a concave static die is movably installed in each group of die grooves, a workpiece is horizontally placed in the concave static die, and the upper convex moving die moves downward and extends into the inside of the concave static die.

[0011] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: a driving chamber is provided 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 rotary support table, a rotating bearing is fixedly connected to the lower end of the annular connecting sleeve, the damping bearing is vertically penetrated by a support column, the support column extends upward and is connected to a central bearing platform, and the bottom of the support column is fixed to the middle position of the bottom of the outer seat of the equipment through a fixing seat.

[0012] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: a driving wheel is sleeved outside the damping bearing, a plurality of groups of strip grooves and guiding curved surfaces are evenly distributed on the outer wheel surface of the driving wheel, the number of the strip grooves and the guiding curved surfaces is preferably 4 or 6 groups, the plurality of groups of strip grooves and the guiding curved surfaces are alternately distributed, a cam driver is fixed on the outer side surface of the outer seat of the equipment and on one side of the driving wheel, and a positioning structure acting on the cam driver is arranged inside the inner layer of the outer seat of the equipment.

[0013] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: a rotating seat is arranged on one side of the support column, the rotating seat is fixed to the inner wall of the outer seat of the equipment through an outer bearing, a guiding block fitting with a plurality of groups of guiding curved surfaces is fixed at the middle position of the upper end surface of the rotating seat, an eccentric column acting on a plurality of groups of strip grooves is welded at the edge position of the upper end surface of the rotating seat, a rotating shaft is welded at the middle position of the lower end surface of the rotating seat, the rotating shaft is connected to a first servo motor, the first servo motor is vertically fixed on the bottom of the outer seat of the equipment, a first rotating rod extends upward from the central position of the guiding block and is sleeved with a first synchronous sprocket.

[0014] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: the cam driver includes a housing, a second rotating rod, a bearing seat, a second synchronous sprocket, a cam and a cam surface. The housing is riveted to the outer side surface of the outer seat of the equipment. The housing is of a semi-open structure. A second rotating rod is vertically rotatably arranged inside the housing. The upper and lower ends of the second rotating rod are fixed to the inner wall of the housing through bearing seats. A second synchronous sprocket is sleeved at a lower position of the second rotating rod. The second synchronous sprocket and the first synchronous sprocket are connected and driven by a chain. The chain passes through the chain opening on the outer seat of the equipment. A cam is sleeved at an upper position of the second rotating rod. A cam surface is arranged on the wheel surface of the cam.

[0015] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: the positioning structure includes a wheel seat, a wheel groove, a pulley, a positioning column, a partition plate, a column hole, a return spring and a pressing head. A wheel groove is opened on one end surface of the wheel seat. A pulley is installed in the wheel groove. A part of the pulley extends out of the wheel groove and abuts against the cam surface of the cam. A positioning column is horizontally welded to one end of the wheel seat away from the wheel groove. A partition plate 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 plate. A return spring sleeved on the positioning column is fixed between the partition plate and the wheel seat. A pressing head is welded to one end of the positioning column away from the wheel seat. A positioning groove for the positioning column to insert is uniformly opened around the outer side surface of the rotary support table. Each group of positioning grooves corresponds to the concave static mold respectively.

[0016] As a preferred solution of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: curved card slots are opened on both side surfaces of the concave static mold. A part of each group of shock-absorbing oil bags extends into the curved card slots respectively. Two sets of hinge pieces are arranged on the outer side surface of the shock-absorbing oil bag. The two sets of hinge pieces are hinged on a hinge shaft. The upper and lower ends of the hinge shaft are fixed to the inner wall of the mold groove. The lower ends of the two sets of shock-absorbing oil bags are both communicated with an oil inlet thin pipe. The lower ends of the two oil inlet thin pipes are respectively communicated with both ends of a double-headed connecting pipe. The double-headed connecting pipe is located inside the rotary support table. The double-headed connecting pipe is connected to a hydraulic oil reservoir through a diversion pipe. The hydraulic oil reservoir is installed in the positioning groove.

[0017] As a preferred embodiment of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: the hydraulic oil reservoir includes a reservoir cylinder, a hydraulic oil chamber, a sealing column hole, a hydraulic column, a plug seat, a spring and an oil hole. The reservoir cylinder is horizontally fixed in the positioning groove. A hydraulic oil chamber is formed inside the reservoir cylinder. A sealing column hole communicating with the hydraulic oil chamber is formed at the middle position of one end of the reservoir cylinder. The hydraulic column passes through the sealing column hole. A plug seat fitting with the hydraulic oil chamber is connected to one end of the hydraulic column located in the hydraulic oil chamber. The other end of the hydraulic column away from the plug seat acts on the pressing head. A spring sleeved outside the hydraulic column is fixed between the plug seat and the sealing column hole. An oil hole is formed at the upper position of one end of the hydraulic oil chamber away from the sealing column hole. The oil hole is connected to the diversion pipe.

[0018] As a preferred embodiment of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: a rotating shaft is horizontally arranged at the middle position inside the upper convex moving die. Two groups of outer bearings are sleeved outside the rotating shaft. Both groups of outer bearings are fixed inside the upper convex moving die. A large gear is sleeved in the middle of the rotating shaft. A small gear is meshed with one side of the large gear. The small gear is sleeved on the output shaft of the second servo motor. The second servo motor is fixed through a motor connection seat and the outer bearing.

[0019] As a preferred embodiment of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: short screw shafts are symmetrically welded at both ends of the rotating shaft. The number of the short screw shafts is 2 groups. A displacement table is sleeved outside each group of short screw shafts. A screw nut sleeve acting on the short screw shaft is installed inside the displacement table. A number of square rods are evenly welded on the outer side surface of the displacement table. The number of the square rods is preferably 2 - 5 groups. Limit rod grooves for the movement of the square rods are respectively formed inside the upper convex moving die. Resistance plates are fixed at the ends of the several groups of square rods. Receiving grooves for the movement of the resistance plates are symmetrically formed on the outer side surfaces of both sides of the upper convex moving die. An elastic gasket is movably arranged on the outer side surface of the resistance plate. The resistance plate and the elastic gasket act on the inner wall of the lower concave static die.

[0020] As a preferred embodiment of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: L-shaped reinforcing rods are symmetrically welded on both sides of the top of the central bearing platform. The number of the L-shaped reinforcing rods is 2 groups. The lower ends of the L-shaped reinforcing rods are riveted on the outer side surface of the equipment outer seat.

[0021] As a preferred embodiment of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: the annular connecting sleeve is fixedly connected to the lower end surface of the rotary support platform through several groups of ear pieces. The number of the ear pieces is preferably 6 - 8 groups.

[0022] As a preferred embodiment of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: a lower groove is provided inside the concave static mold.

[0023] As a preferred embodiment of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: the rotary support table rotates around the central bearing table and the support column.

[0024] As a preferred embodiment of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: wall grooves for receiving shock-absorbing oil sacs are symmetrically provided on the inner wall of the mold groove.

[0025] As a preferred embodiment of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: the position of the double-headed connecting pipe is slightly higher than the position of the hydraulic oil reservoir.

[0026] As a preferred embodiment of the stamping equipment for producing a high-strength aluminum alloy cover plate according to the present invention, wherein: the outer surface of the elastic gasket is smooth.

[0027] A stamping method for producing a high-strength aluminum alloy cover plate includes the following steps:

[0028] S1: Sequentially place the high-strength aluminum alloy workpieces to be stamped into the inside of the concave static mold, start the first servo motor, and through a series of transmissions, make the entire rotary support table rotate around the support column by a certain angle, and stop when a group of adjacent concave static molds rotate to directly below the convex moving mold.

[0029] S2: While the turntable rotates one week, through a series of transmissions, the cam surface of the cam just moves to the position of the pulley, and the two contact to generate a force, making the wheel seat and the positioning column move horizontally outwards. The end of the positioning column directly inserts into one of the positioning grooves of the rotary support table. At the same time, the pressing head of the positioning column acts on the hydraulic oil reservoir, causing the hydraulic oil reservoir to supply hydraulic oil. The hydraulic oil enters the shock-absorbing oil sac, expands laterally after filling, and a part of the shock-absorbing oil sac enters the corresponding curved card slot, locking the concave static mold in the mold groove.

[0030] S3: By starting the stamping cylinder, the cylinder rod extends downwards, driving the rigid pressure seat to move downwards along the limit track, generating a strong force and transmitting it to the convex moving mold. The convex cooperates with the lower groove to exert a pressure on the high-strength aluminum alloy workpiece between the two, deforming it into a cover plate.

[0031] The present invention provides a stamping equipment and a stamping method for producing a high-strength aluminum alloy cover plate by improvement. Compared with the prior art, it has the following significant improvements and advantages:

[0032] Start the first servo motor. The rotating shaft drives the turntable to rotate one week. First, it enters into one of the strip grooves of the driving wheel and interacts with the strip groove, causing the driving wheel to rotate a certain angle. The entire rotary support table rotates a certain angle around the support column, so that the adjacent set of concave stationary molds moves to directly below the convex moving mold and stops, achieving the purpose of cyclic feeding. It can continuously punch, improving work efficiency.

[0033] With the power of the turntable rotation, through a series of transmissions of the sprocket structure, the cam also rotates one week synchronously. When the rotary support table stops moving, the cam surface of the cam just moves to the position of the pulley, and the two contact to generate a force, causing the wheel seat and the positioning column to move horizontally outwards. The end of the positioning column directly inserts into one of the positioning grooves at the stop position of the rotary support table, forming a limit support for the rotary support table, preventing the rotary support table from moving during the stamping process, improving its stability and compressive resistance, and reducing the power source.

[0034] With the power of the positioning column movement, the pressing head of the positioning column generates a squeezing force on the hydraulic column during the movement process, causing the plug seat to push the hydraulic oil in the hydraulic oil cavity, and the hydraulic oil flows outwards from the only oil hole. Through the pipeline transportation, the hydraulic oil is injected upwards from the inlet thin pipe into the shock-absorbing oil bag, causing the shock-absorbing oil bag to expand horizontally after being filled. A part of the shock-absorbing oil bag enters into the corresponding curved card slot. On the one hand, through the connection of the two shock-absorbing oil bags, the concave stationary mold is locked in the mold slot, achieving the function of limit locking. On the other hand, the vibration force generated by the concave stationary mold during the stamping process can be offset by the shock-absorbing oil bag, improving the earthquake resistance effect of the concave stationary mold.

[0035] Turn on the second servo motor to drive the small gear to rotate. Through a series of transmissions, the respective displacement tables move linearly outwards on the short axis of the lead screw. On the one hand, it can push a part of the elastic gasket to extend out of the storage groove and contact the inner wall of the concave stationary mold, synchronously generating an elastic force and a sliding force, reducing the frictional resistance and vibration force during the stamping movement process, and improving the stamping effect. On the other hand, it drives a part of the resistance plate to extend out of the storage groove and contact the inner wall of the concave stationary mold. The two resistance plates form an inner support and clamping state for the concave stationary mold. Then, let the cylinder rod return upwards. The convex moving mold drives the concave stationary mold to move upwards, and the concave stationary mold is exported from the mold slot, achieving the purpose of automatically disassembling the concave stationary mold, saving time and effort. Description of the Drawings

[0036] Figure 1 It is a schematic diagram of the overall structure of a stamping device for producing high-strength aluminum alloy covers according to the present invention in one direction;

[0037] Figure 2 It is a schematic diagram of the overall structure of a stamping device for producing high-strength aluminum alloy covers according to the present invention in another direction;

[0038] Figure 3 It is a schematic diagram of the specific structure of the stamping bracket of the present invention;

[0039] Figure 4 It is a schematic diagram of the internal structure of the driving chamber of the present invention;

[0040] Figure 5 It is a schematic diagram of the lower end structure of the rotary bracket table of the present invention;

[0041] Figure 6 It is a schematic diagram of the external connection structure of the turntable of the present invention;

[0042] Figure 7 It is a schematic diagram of the specific structure of the cam drive of the present invention;

[0043] Figure 8 It is a schematic diagram of the specific structure of the positioning structure of the present invention;

[0044] Figure 9 It is a schematic diagram of the internal structure of the mold groove of the present invention;

[0045] Figure 10 It is a schematic diagram of the external connection of the hydraulic oil reservoir of the present invention;

[0046] Figure 11 It is a cross-sectional view of the hydraulic oil reservoir of the present invention;

[0047] Figure 12 It is a schematic diagram of the installation position of the elastic gasket of the present invention;

[0048] Figure 13 It is a schematic diagram of the internal structure of the upper convex moving mold of the present invention.

[0049] In the figure: 1. Outer seat of the device; 2. Connecting arm; 3. Central bearing platform; 4. Rotation groove; 5. Rotary support platform; 6. Die groove; 7. Concave static die; 8. Cam driver; 80. Housing; 81. Second rotating rod; 82. Bearing seat; 83. Second synchronous sprocket; 84. Cam; 85. Cam surface; 9. Positioning structure; 91. Wheel seat; 92. Wheel groove; 93. Pulley; 94. Positioning column; 95. Partition; 96. Column hole; 97. Return spring; 98. Pressing head; 10. Stamping bracket; 11. Cylinder seat; 12. Stamping cylinder; 13. Cylinder rod; 14. Rigid pressure seat; 15. Limit track; 16. Connecting rod; 17. Upper convex moving die; 20. Driving chamber; 21. Ring-shaped connecting sleeve; 22. Damping bearing; 23. Support column; 24. Fixed seat; 25. Driving wheel; 26. Strip-shaped groove; 27. Guide surface; 30. Rotating seat; 31. Connecting bearing; 32. Eccentric column; 33. Guide block; 34. Rotating shaft; 35. First servo motor; 36. First rotating rod; 37. First synchronous sprocket; 38. Chain; 40. Curved card slot; 41. Shock-absorbing oil bag; 42. Hinge piece; 43. Hinge shaft; 44. Fine oil inlet pipe; 45. Double-headed connecting pipe; 46. Diversion pipe; 47. Hydraulic oil reservoir; 471. Reserve cylinder; 472. Hydraulic oil chamber; 473. Sealed column hole; 474. Hydraulic column; 475. Plug seat; 476. Spring; 477. Oil hole; 50. Rotating shaft; 51. Outer bearing; 52. Large gear; 53. Small gear; 54. Second servo motor; 55. Motor connecting seat; 60. Short screw shaft; 61. Displacement table; 62. Screw nut sleeve; 63. Square rod; 64. Resistance plate; 65. Elastic gasket; 66. Storage groove; 70. L-shaped reinforcing rod; 71. Ear piece; 72. Positioning groove; 73. Lower groove. Specific implementation mode

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0051] As Figure 1-11 shown, this embodiment provides a stamping device for producing high-strength aluminum alloy covers, including an outer seat 1 of the device. The outer side of the outer seat 1 of the device is connected with a central bearing 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 bearing platform 3. The top of the stamping bracket 10 is horizontally connected with a cylinder seat 11, and a stamping cylinder 12 is vertically installed at the middle position of the cylinder seat 11.

[0052] Specifically, a cylinder rod 13 extends downward inside the stamping cylinder 12. A rigid pressure seat 14 is welded to the lower end of the cylinder rod 13. A limiting track 15 for the movement of the rigid pressure seat 14 is vertically installed inside the stamping bracket 10. The limiting track 15 plays a role in limiting and guiding. The lower end of the rigid pressure seat 14 is connected to an upper convex moving die 17 through two groups of connecting rods 16, as Figure 1-3 shown.

[0053] Furthermore, a rotating groove 4 is opened at a position near the upper part inside the outer seat 1 of the equipment. A rotary support table 5 is rotatably arranged in the rotating groove 4, and the two are of matching sizes, as Figure 1 and 2 shown.

[0054] Among them, a number of groups of die slots 6 are evenly opened on the upper end surface of the rotary support table 5. A concave static die 7 is movably installed in each group of die slots 6. A lower groove 73 is opened inside the concave static die 7. A workpiece (forged aluminum alloy forging) is horizontally placed inside the concave static die 7. The upper convex moving die 17 moves downward and extends into the inside of the concave static die 7. There is a fitting relationship between the upper convex moving die 17 and the concave static die 7 to ensure that the size of the stamped workpiece is accurate and the thickness is uniform, as Figure 1 、 2 and 9 shown.

[0055] Furthermore, a driving chamber 20 is opened inside the outer seat 1 of the equipment and is located below the rotating groove 4. An annular connecting sleeve 21 is arranged at the middle position of the lower end of the rotary support table 5. The annular connecting sleeve 21 is fixedly connected to the lower end surface of the rotary support table 5 through a number of groups of ear pieces 71. The ear pieces 71 play a role in connecting and strengthening. The lower end of the annular connecting sleeve 21 is fixedly connected to a damping bearing 22 (the damping bearing 22 includes an outer shaft sleeve and an inner shaft sleeve). The damping bearing 22 has a certain damping force to prevent the rotary support table 5 from rotating due to inertia, as Figure 4 and 5 shown.

[0056] Among them, 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. A reinforcing bearing is arranged between the upper end of the support column 23 and the rotary support table 5. The bottom of the support column 23 is fixed to the middle position of the bottom of the outer seat 1 of the equipment through a fixed seat 24. The rotary support table 5 rotates around the central bearing platform 3 and the support column 23, as Figure 5 shown.

[0057] Among them, a driving wheel 25 is sleeved outside the damping bearing 22. A number of groups of strip grooves 26 and guiding curved surfaces 27 are evenly distributed on the outer wheel surface of the driving wheel 25. The number of groups of strip grooves 26 and guiding curved surfaces 27 are alternately distributed, as Figure 5 shown.

[0058] Further, a swivel base 30 is provided on one side of the support column 23. The swivel base 30 is fixed to the inner wall of the equipment outer seat 1 through a connecting bearing 31, as Figure 5 and 6 shown.

[0059] In this embodiment, a guide block 33 that fits with a number of guide surfaces 27 is fixed at the middle position of the upper end surface of the swivel base 30. The outer surfaces of the guide surface 27 and the guide block 33 are fully fitted during the movement, as Figure 6 shown.

[0060] In this embodiment, an eccentric column 32 that acts with a number of strip-shaped grooves 26 is welded at the edge position of the upper end surface of the swivel base 30. The thickness of the eccentric column 32 is adapted to the width of the strip-shaped groove 26, as Figure 6 shown.

[0061] Among them, a rotating shaft 34 is welded at the middle position of the lower end surface of the swivel base 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 equipment outer seat 1, as Figure 5 and 6 shown.

[0062] Among them, a first rotating rod 36 extends upward from the center position of the guide block 33 and is welded. A first synchronous sprocket 37 is sleeved on the first rotating rod 36, as Figure 6 shown.

[0063] Further, a cam drive 8 is fixed on the outer side surface of the equipment outer seat 1 and is located on one side of the drive wheel 25, as Figure 6 shown.

[0064] Specifically, the cam drive 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, as Figure 7 shown.

[0065] In this embodiment, the housing 80 is riveted to the outer side surface of the equipment outer seat 1. The housing 80 is a semi-open structure. A second rotating rod 81 is vertically rotatably arranged inside the housing 80. Both the upper and lower ends of the second rotating rod 81 are fixed to the inner wall of the housing 80 through the bearing seat 82. A 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 second synchronous sprocket 83 and the first synchronous sprocket 37 are of the same size. The chain 38 passes through a chain opening on the equipment outer seat 1.

[0066] In this embodiment, a cam 84 is sleeved at the upper position of the second rotating rod 81. A cam surface 85 is provided on the cam surface of the cam 84. The initial positions of the cam surface 85 and the eccentric column 32 are set according to actual needs.

[0067] Further, a positioning structure 9 that interacts with the cam driver 8 is provided on the inner layer of the outer seat 1 of the device, as Figure 6 shown.

[0068] Specifically, the positioning structure 9 includes a wheel seat 91, a wheel groove 92, a pulley 93, a positioning column 94, a partition plate 95, a column hole 96, a return spring 97, and a pressing head 98, as Figure 8 shown.

[0069] In this embodiment, a wheel groove 92 is formed on one end face of the wheel seat 91. A pulley 93 is installed in the wheel groove 92, and a part of the pulley 93 extends out of the wheel groove 92 and abuts against 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.

[0070] In this embodiment, a partition plate 95 is riveted in the inner layer of the outer seat 1 of the device. A column hole 96 for the positioning column 94 to slide through is formed in the middle of the partition plate 95, and the column hole 96 plays a role in limiting and guiding. A return spring 97 sleeved on the positioning column 94 is fixed between the partition plate 95 and the wheel seat 91. The return spring 97 is used to maintain the contact force between the pulley 93 and the cam 84. A pressing head 98 is welded to the end of the positioning column 94 away from the wheel seat 91. A positioning groove 72 for the positioning column 94 to insert into is evenly formed around the outer side surface of the rotary support platform 5.

[0071] Among them, each group of positioning grooves 72 corresponds to the concave static mold 7 respectively.

[0072] Further, curved card slots 40 are formed on both side surfaces of the concave static mold 7. A part of each shock-absorbing oil bladder 41 extends into each group of curved card slots 40 respectively. The shock-absorbing oil bladder 41 has the performance of deformation and reset, as Figure 9 shown.

[0073] Among them, two sets of hinge blades 42 are fixedly connected to the outer side surface of the shock-absorbing oil bladder 41. The two sets of hinge blades 42 are hinged on the hinge shaft 43. The hinge blades 42 open and close around the hinge shaft 43. The upper and lower ends of the hinge shaft 43 are fixed to the inner wall of the mold groove 6 (wall grooves for receiving the shock-absorbing oil bladder 41 are symmetrically formed on the inner wall of the mold groove 6, and the wall grooves play a role in receiving and limiting), as Figure 9 and 10 shown.

[0074] Among them, oil inlet capillaries 44 are connected to the lower ends of both sets of shock-absorbing oil bladders 41. The lower ends of the two sets of oil inlet capillaries 44 are respectively connected to the two end parts 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 and the oil inlet capillaries 44 are both capillary oil pipes. The double-headed connecting pipe 45 is connected to the hydraulic oil reservoir 47 through a diversion pipe 46. The position of the double-headed connecting pipe 45 is slightly higher than the position of the hydraulic oil reservoir 47, which is convenient for the hydraulic oil to flow back into the hydraulic oil reservoir 47. The hydraulic oil reservoir 47 is installed in the positioning groove 72, asFigure 10 as shown

[0075] Specifically, the hydraulic oil reservoir 47 includes a reservoir 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, as Figure 11 shown

[0076] In this embodiment, the reservoir cylinder 471 is horizontally fixed in the positioning groove 72. A hydraulic oil chamber 472 is provided inside the reservoir cylinder 471. A sealing column hole 473 communicating with the hydraulic oil chamber 472 is provided at the middle position of one end of the reservoir cylinder 471. The sealing column hole 473 allows the hydraulic column 474 to pass through, and the sealing column hole 473 plays a role of sealing and guiding.

[0077] In this embodiment, a plug seat 475 that fits the hydraulic oil chamber 472 is connected to one end of the hydraulic column 474 located in the hydraulic oil chamber 472. The end of the hydraulic column 474 away from the plug seat 475 acts on the pressing head 98. A spring 476 sleeved outside 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 to drive the plug seat 475 to automatically reset. An oil hole 477 is provided at the upper position of one end of the hydraulic oil chamber 472 away from the sealing column hole 473, and the oil hole 477 is connected to the diversion pipe 46.

[0078] Furthermore, L-shaped reinforcing bars 70 are symmetrically welded to both sides of the top of the central bearing platform 3. The lower ends of the L-shaped reinforcing bars 70 are riveted to the outer side of the equipment outer seat 1, playing a role of connecting and fixing, as Figure 1 shown

[0079] During the use of this embodiment, the high-strength aluminum alloy workpieces to be stamped are sequentially placed into the concave static mold 7. Then, the first servo motor 35 is started, and the rotating shaft 34 drives the rotating seat 30 to rotate one week. During this process, the eccentric column 32 on the rotating seat 30 makes a circular motion. First, it enters one of the strip-shaped grooves 26 of the driving wheel 25 and acts on the strip-shaped groove 26, causing the driving wheel 25 to rotate a certain angle (60° or 90°). The entire rotary support platform 5 rotates a certain angle around the support column 23, so that the adjacent group of concave static molds 7 rotates to a position directly below the convex moving mold 17 and stops, forming a cyclic feeding. Then, the eccentric column 32 moves out of the strip-shaped groove 26 and returns to the initial position.

[0080] While the turntable 30 rotates one full circle, the first rotating rod 36 drives the first synchronous sprocket 37 to rotate one full circle, and through the chain 38 for connection and transmission, the second synchronous sprocket 83 drives the second rotating rod 81 to rotate one full circle, and the coaxial cam 84 also rotates one full circle synchronously. During the movement of the rotary support table 5, the curved surface of the cam 84 remains in contact with the pulley 93 on the positioning structure 9 (the positioning post 94 is located outside the positioning groove 72). When the rotary support table 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, causing the wheel seat 91 and the positioning post 94 to move horizontally outwards (compressing the return spring 97 during the movement process), and the end of the positioning post 94 directly inserts into one of the groups of positioning grooves 72 at the stop position of the rotary support table 5, forming a limit support for the rotary support table 5.

[0081] At the same time, the pressing head 98 of the positioning post 94 generates a squeezing force on the hydraulic column 474 of the hydraulic oil reservoir 47 during the movement process, causing the hydraulic column 474 to move inwards, which causes the plug seat 475 to push the hydraulic oil in the hydraulic oil chamber 472, and the hydraulic oil flows outwards from the only oil hole 477, passes through the diversion pipe 46 and is injected into the double-headed connecting pipe 45, and then is respectively injected upwards into the two groups of oil inlet thin pipes 44 by the double-headed connecting pipe 45. The hydraulic oil in the oil inlet thin pipes 44 is injected upwards into the shock-absorbing oil bladder 41, causing the shock-absorbing oil bladder 41 to expand horizontally after being filled (the longitudinal movement of the shock-absorbing oil bladder 41 is restricted by the wall groove). A part of the shock-absorbing oil bladder 41 enters into the corresponding curved card slot 40, filling the entire curved card slot 40, and the lower concave stationary mold 7 is locked in the mold groove 6 through the connection of the two groups of shock-absorbing oil bladders 41.

[0082] At this time, by starting the stamping cylinder 12, the cylinder rod 13 extends downwards, driving the rigid pressure seat 14 to move downwards along the limit track 15, generating a strong force and transmitting it to the upper convex moving mold 17, causing the upper convex moving mold 17 to perform a downward rigid stamping movement. The upper convex moving mold 17 enters into the lower concave stationary mold 7, and the convex cooperates with the lower concave groove 73 to generate a pressure on the high-strength aluminum alloy workpiece between the two, deforming it into a cover plate. Embodiment 2

[0083] On the basis of Embodiment 1, when the existing upper convex moving mold 17 moves in the lower concave stationary mold 7, there is a contact resistance between the two, thus reducing the stamping force on the workpiece. After a large number of stamping times, it will also cause a certain degree of wear to the mold. To solve the above problems, we have the following design, as Figure 12-13 shown.

[0084] Specifically, a rotating shaft 50 is horizontally arranged at the middle position inside the upper convex moving mold 17. Two groups of outer bearings 51 are sleeved outside the rotating shaft 50, and the rotating shaft 50 rotates around the two groups of outer bearings 51. Both groups of outer bearings 51 are fixed inside the upper convex moving mold 17, asFigure 13 As shown

[0085] Among them, a large gear 52 is sleeved in the middle of the rotating shaft 50. One side of the large gear 52 is meshed with a small gear 53. The small gear 53 is sleeved on the output shaft of the second servo motor 54. The second servo motor 54 is fixed through a motor connecting seat 55 and an outer bearing 51, as Figure 13 shown

[0086] Among them, screw rod short shafts 60 are symmetrically welded at both ends of the rotating shaft 50. A displacement table 61 is sleeved outside each group of screw rod short shafts 60. A screw rod nut sleeve 62 acting on the screw rod short shaft 60 is installed inside the displacement table 61, as Figure 13 shown

[0087] Furthermore, a number of groups of square rods 63 are evenly welded on the outer side surface of the displacement table 61. Limiting rod grooves for the movement of the square rods 63 are respectively opened inside the upper convex moving die 17. The limiting rod grooves play a role in limiting and guiding. The ends of a number of groups of square rods 63 are fixed with a resistance plate 64. A number of groups of anti-slip lines are arranged on the outer surface of the resistance plate 64. Receiving grooves 66 for the movement of the resistance plate 64 are symmetrically opened on both outer side surfaces of the upper convex moving die 17. The receiving grooves 66 play a role in receiving and limiting, as Figure 12 and 13 shown

[0088] Among them, an elastic gasket 65 (connected or sleeved by a buckle) is movably arranged on the outer side surface of the resistance plate 64. The outer surface of the elastic gasket 65 is smooth and has a certain rubber elasticity. The resistance plate 64 and the elastic gasket 65 act on the inner wall of the concave static die 7, as Figure 12 and 13 shown

[0089] When this embodiment is in use, first install the elastic gaskets 65 on the two resistance plates 64. Then, when the upper convex moving die 17 enters the concave static die 7, start the second servo motor 54 to drive the small gear 53 to rotate. Through meshing, the large gear 52 makes a decelerated movement. The rotating shaft 50 drives the two screw rod short shafts 60 to rotate, causing the respective displacement tables 61 to move linearly outward on the screw rod short shafts 60 (the screw rod nut sleeve 62 acts with the spiral threads on the screw rod short shafts 60), pushing a part of the elastic gasket 65 to extend out of the receiving groove 66 to contact the inner wall of the concave static die 7, synchronously generating an elastic acting force and a sliding acting force, and reducing the frictional resistance and vibration acting force during the stamping movement process.

[0090] When it is necessary to disassemble the concave stationary mold 7 in the mold groove 6, first remove the elastic gaskets 65 on the two groups of resistance plates 64. Under the condition that the shock-absorbing oil bag 41 shrinks, let the upper convex moving mold 17 completely enter the concave stationary mold 7. Then start the second servo motor 54. Through the above series of transmissions, the rotating shaft 50 drives the two groups of short lead screw shafts 60 to rotate, causing the respective displacement tables 61 to move linearly outwards, driving the local extension of the resistance plates 64 out of the storage grooves 66 to contact the inner wall of the concave stationary mold 7. The two groups of resistance plates 64 form an internal support and clamping state for the concave stationary mold 7. At this time, let the cylinder rod 13 return upwards, and the upper convex moving mold 17 drives the concave stationary mold 7 to move upwards, and the concave stationary mold 7 is led out of the mold groove 6.

[0091] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0092] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. 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 outer seat (1) of the device 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); the bottom of the support column (23) is fixed by a fixing seat (24) and the middle position of the bottom of the outer seat (1) of the device; The inner layer of the device outer base (1) is provided with a positioning structure (9), the positioning structure (9) comprises a positioning column (94), and the outer side surface of the rotating support platform (5) is evenly provided with positioning grooves (72) for the positioning columns (94) to be inserted. 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).

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 to the outer side surface of the device outer seat (1) and located on one side of the driving wheel (25), and the positioning structure (9) and the cam driver (8) interact with each other.

3. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 2 is 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 a 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 an edge position of the upper end surface of the swivel seat (30). A rotating shaft (34) is welded at a 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 to the bottom of the device outer seat (1).

4. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 3 is characterized in that: A No. 1 rotating rod (36) is welded upwardly extending from the center of the guide block (33), and a No. 1 synchronous sprocket (37) is sleeved on the No. 1 rotating rod (36). The cam transmission device (8) comprises a housing (80), a No. 2 rotating rod (81), a bearing seat (82), a No. 2 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 No. 2 rotating rod is vertically rotatably arranged inside the housing (80). (81), the upper and lower ends of the second rotating rod (81) are fixed by a bearing seat (82) and the inner wall of the housing (80), the lower position of the second rotating rod (81) is sleeved with a second synchronous sprocket (83), 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 outer seat (1) of the device, the upper position of the second rotating rod (81) is sleeved with a cam (84), and the wheel surface of the cam (84) is provided with a cam surface (85).

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

6. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 5, 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).

7. The stamping equipment for producing high-strength aluminum alloy cover plates according to claim 6, characterized in that: A rotating shaft (50) is horizontally arranged in the middle position inside the upper convex movable mold (17), two groups of external bearings (51) are sleeved on the outer side of the rotating shaft (50), and the two 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), a small gear (53) is meshedly arranged 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), and the second servo motor (54) is fixed via a motor connecting seat (55) and the external bearings (51); 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).

8. A stamping method for producing a high-strength aluminum alloy cover plate, applied to a stamping device for producing a high-strength aluminum alloy cover plate as claimed in claim 7, 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 convex movable die (17), and the convex cooperates with the lower groove (73) opened inside the concave static die (7) to generate pressure on the high-strength aluminum alloy workpiece between the two, causing it to deform into a cover plate.

Images