Lightweight stamping device for aluminum part production

Abstract

The invention relates to the technical field of stamping equipment, and discloses a lightweight stamping device for aluminum part production, which comprises a stamping bottom table, a hydraulic device arranged at the top of the stamping bottom table, switching assemblies arranged on two sides of the stamping bottom table and the hydraulic device, and a synchronous driving device arranged on one side of each switching assembly, the flexible clamping mechanism is arranged between the stamping bottom table and the hydraulic device, the die assembly is arranged in the flexible clamping mechanism and the switching assembly, an aluminum sheet is placed between a first clamping plate and a second clamping plate through the arranged flexible clamping mechanism, a servo motor is operated, an output shaft of the servo motor drives an opposite threaded rod to rotate, and therefore the aluminum sheet is placed between the first clamping plate and the second clamping plate. According to the aluminum sheet clamping device, by arranging the first clamping plates and the second clamping plates, the clamping area is greatly increased, the clamping force is adjusted by the servo motor through induction, and the clamping effect of flexible clamping is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of stamping equipment, and in particular to a stamping device for lightweight production of aluminum parts. Background Art

[0002] Lightweight stamping devices for aluminum parts production are usually used to improve production efficiency and reduce product weight. Lightweight aluminum parts mean that the material thickness may be thinner, so high-precision stamping dies are required to ensure the dimensional accuracy and surface quality of the finished product. Multi-station stamping machines are usually used to complete multiple processes on the same production line, improve production efficiency, reduce scrap and reduce material waste.

[0003] Patent publication number CN110090881A discloses a stamping device for aluminum stamping parts, including a base, a workbench fixedly mounted on the upper end of the base, and a mounting seat fixedly mounted above the base through a bracket, a hydraulic cylinder fixedly mounted at the lower end of the mounting seat, a connecting plate fixedly mounted at the end of the piston rod of the hydraulic cylinder, and a stamping die fixedly mounted at the lower end of the connecting plate through bolts; a support rod is rotatably mounted on the outer side of the connecting plate, the other end of the support rod is rotatably connected to a pressure plate through a rod sleeve, a compression spring is sleeved on the outer side of the support rod, and an electric push rod is arranged above the pressure plate. During stamping, the device pre-compresses the aluminum parts around the stamping position to avoid local bending and deformation of the aluminum parts during stamping, and has strong applicability.

[0004] The prior art has the following defects:

[0005] The existing clamping mechanism does not have enough flexibility to clamp aluminum parts: Aluminum is relatively soft, and excessive pressure exerted by the clamping mechanism may cause permanent deformation or indentation of the aluminum parts, especially for thin plates or parts that require lightweight production. The clamping mechanism does not have enough flexibility to clamp aluminum parts, which may cause loose clamping, deformation, surface damage and other problems. However, if the clamping force is too small, it may slip or loosen during processing, resulting in position offset or processing errors. Therefore, it is necessary to disperse the pressure by increasing the contact area of ​​the clamping mechanism, while improving the clamping stability and preventing the aluminum parts from sliding. The clamping force should be reasonably controlled to increase the flexibility and adjustability of the clamping, so as to improve the clamping quality and production efficiency.

[0006] Existing stamping devices require frequent mold replacement for complex aluminum parts: for aluminum parts with complex shapes and various sizes, different molds need to be used for multiple stampings. Each mold replacement not only takes time for disassembly and assembly, but may also involve processes such as mold debugging and calibration. For mass production, frequent mold replacement will interrupt the production process and affect the continuity and rhythm of production. Although multi-station molds can improve production efficiency and reduce the need for frequent mold changes in the stamping process, multi-station molds integrate multiple processes, and the overall size and weight of the molds are often large, which not only increases the mold manufacturing cost, but also causes inconvenience in installation, transportation, storage and use. Therefore, it is necessary to set up a device that can automatically replace molds and control the volume and weight of the stamping device to reduce costs and improve efficiency. Summary of the invention

[0007] In view of the problems in the prior art that the existing clamping mechanism has insufficient flexible clamping degree for aluminum parts and the existing stamping device needs frequent mold replacement for complex aluminum parts, a stamping device for lightweight aluminum part production is proposed.

[0008] The present application provides a lightweight stamping device for the production of aluminum parts, the purpose of which is to: expand the clamping range, control the clamping force and stability by setting an adjustable flexible clamping mechanism to improve the clamping quality and production efficiency, and reduce the volume and weight of the stamping device by setting a switching component for automatic mold replacement, so as to achieve the effect of reducing costs and improving efficiency.

[0009] The technical solution of the present invention is: a lightweight stamping device for producing aluminum parts, comprising a stamping base, a hydraulic device arranged on the top of the stamping base, a switching assembly arranged on both sides of the stamping base and the hydraulic device, a synchronous driving device arranged on one side of the switching assembly, a flexible clamping mechanism arranged between the stamping base and the hydraulic device, and a mold assembly arranged inside the flexible clamping mechanism and the switching assembly, wherein the flexible clamping mechanism comprises a bottom fixed platform fixedly connected to the top of the stamping base, a top fixed platform fixedly connected to the output end of the hydraulic device, a second auxiliary platform fixedly connected to the outer wall of the bottom fixed platform, a first auxiliary platform fixedly connected to the outer wall of the top fixed platform, and an adjustment assembly arranged between the first auxiliary platform and the second auxiliary platform;

[0010] The adjustment assembly includes a limit rod and a counter threaded rod movably connected to the inside of the first auxiliary platform and the second auxiliary platform, the outer wall of the limit rod is slidably connected to the first clamping plate and the second clamping plate, the first clamping plate and the second clamping plate are respectively threadedly connected to the two thread segments on the counter threaded rod, and when the counter threaded rod rotates, the first clamping plate and the second clamping plate are moved closer to or farther from each other.

[0011] By adopting the above scheme, through the rotation of the opposing threaded rods, the first clamping plate and the second clamping plate move toward each other under the action of the two opposite threaded segments on the opposing threaded rods, and slide and limit on the limit rod to clamp the aluminum part. The output end of the hydraulic device presses the top fixed platform downward, and the first auxiliary platform moves downward accordingly until the first clamping plate and the second clamping plate are between the first auxiliary platform and the second auxiliary platform. The first stamping is completed, the hydraulic device is released, the top fixed platform returns to the top, and the first clamping plate and the second clamping plate also return to the initial position at the same time, and the aluminum part is still clamped.

[0012] Furthermore, the bottom of the limit rod is fixedly connected to a lower moving platform, and the lower moving platform is rotatably connected to the opposite threaded rod. A lower moving groove is opened inside the stamping base, and the inner wall of the lower moving groove is slidably connected to the outer wall of the lower moving platform. A spring is fixedly connected between the inner wall of the lower moving groove and the bottom of the lower moving platform.

[0013] Furthermore, a power assembly is provided on the top of one of the lower moving platforms, and the power assembly includes a servo motor fixedly connected to the top of the lower moving platform, the output shaft of the servo motor is fixedly connected to a transmission gear, and the outer wall of the threaded rod opposite to the servo motor on the same lower moving platform is fixedly connected to a driven gear, and the driven gear is meshed with the transmission gear.

[0014] Furthermore, a fixing frame is fixedly connected to the outer wall of the limit rod on the same lower moving platform as the servo motor, the inner wall of the fixing frame is rotatably connected to the output shaft of the servo motor, and a synchronous transmission belt is transmission-connected between the outer walls of the plurality of opposing threaded rods.

[0015] By adopting the above scheme, the servo motor is operated, and the output shaft of the servo motor drives the opposing threaded rods to rotate through the transmission gear and the driven gear, and drives the other opposing threaded rods to rotate synchronously through the synchronous transmission belt to clamp the aluminum parts. When the hydraulic device is stamping, the lower moving platform squeezes the spring downward and embeds it into the lower moving groove. When the hydraulic device is released, the lower moving platform also returns to the initial position.

[0016] Furthermore, the mold assembly includes an upper mold slidably connected to the top fixed platform, a lower mold slidably connected to the bottom fixed platform, and an aluminum sheet clamped between the first clamping plate and the second clamping plate.

[0017] Furthermore, the outer walls of the upper mold and the lower mold are both provided with slide grooves, the outer walls of the top fixed platform and the bottom fixed platform are both fixedly connected with rails, and the slide grooves are slidably connected to the rails.

[0018] By adopting the above scheme, the aluminum sheet is placed between the first clamping plate and the second clamping plate by manual or mechanical means, the power assembly is operated for clamping, and then the hydraulic device is started. The output end of the hydraulic device squeezes the upper mold downward through the top fixed platform until the upper mold moves to the bottom. At this time, the aluminum sheet is between the upper mold and the lower mold. The first stamping is completed, the hydraulic device is released, the upper mold returns to the top, and the lower platform also returns to the initial position, and the aluminum sheet is still clamped.

[0019] Furthermore, the switching assembly includes a slide rail platform slidably connected to the slide groove, a protective shell is fixedly connected to the top of the slide rail platform, and multiple protective shells are respectively fixedly connected to the stamping base and the hydraulic device and the outer wall, and the inner wall of the protective shell is rotatably connected to multiple drive rods, and the multiple drive rods are respectively mounted on multiple synchronous drive shafts of the synchronous drive device.

[0020] Furthermore, a driving gear is fixedly connected to the outer wall of the driving rod, and racks are fixedly connected to the outer walls of the upper mold and the lower mold, and the driving gear is meshed with the racks.

[0021] Furthermore, the inner walls of the upper mold and the lower mold are rotatably connected to extrusion blocks, the outer walls of the extrusion blocks are connected to torsion springs, and multiple torsion springs are respectively arranged inside the upper mold and the lower mold. Extrusion grooves are opened on the inner walls of the upper mold and the lower mold, and the extrusion blocks are overlapped on the inner walls of the corresponding extrusion grooves.

[0022] Furthermore, an adjustable stopper is fixedly connected to the outer wall of the protective shell, and the adjustable stopper can correct the positions of the upper mold and the lower mold.

[0023] By adopting the above scheme, different upper molds and lower molds are assembled according to the production of different aluminum parts. The upper molds and lower molds can be multiple sets. The upper molds and lower molds are both put in from the end of the protective shell away from the stamping bottom platform, and the slide groove is aligned with the slide rail platform and pushed in, and then the synchronous drive device is operated, and the multiple driving gears are driven to rotate synchronously through the driving rod. Since the driving gear is engaged with the rack, the upper mold or the lower mold can be pushed in when the driving gear rotates, and the position is corrected under the limit of the adjustable stopper, and then the next set of upper molds and lower molds are pushed in, until the front upper mold and lower mold are pushed into the bottom fixed platform and the top fixed platform, and the assembly is completed. After one stamping is completed, the synchronous drive device is operated again to push the second set of molds into the bottom fixed platform and the top fixed platform, and the second set of molds can be matched with the bottom fixed platform and the top fixed platform through the extrusion between the extrusion block on the third set of molds and the extrusion groove of the second set of molds, and the position is corrected under the limit of the adjustable stopper, and when the hydraulic device is pressed down, the extrusion block can be separated from the extrusion groove and reset under the action of the torsion spring, and multiple sets of stamping are performed in sequence to complete the product production.

[0024] Beneficial effects of the present invention:

[0025] 1. Through the flexible clamping mechanism, the aluminum sheet is placed between the first clamping plate and the second clamping plate, and the servo motor is operated. The output shaft of the servo motor drives the opposing threaded rod to rotate through the transmission gear and the driven gear, and drives the remaining opposing threaded rods to rotate synchronously through the synchronous transmission belt. The first clamping plate and the second clamping plate move toward each other under the action of the two opposite threaded sections on the opposing threaded rods, and slide and limit on the limit rod to clamp the aluminum sheet between the first clamping plate and the second clamping plate. By setting a plurality of first clamping plates and second clamping plates, the clamping area is greatly increased, and the clamping force is adjusted by the servo motor through induction to ensure the clamping effect of the flexible clamping.

[0026] 2. Through the set down-shifting platform and down-shifting groove, the output end of the hydraulic device squeezes the upper mold downward through the top fixed platform, and the first auxiliary platform moves downward accordingly. When the bottom of the upper mold contacts the aluminum sheet, it drives the aluminum sheet to be squeezed downward together, and the down-shifting platform squeezes the spring downward and embeds it into the down-shifting groove until the upper mold moves to the bottom. At this time, the aluminum sheet is between the upper mold and the lower mold, and the first clamping plate and the second clamping plate are between the first auxiliary platform and the second auxiliary platform. After the first stamping is completed, the hydraulic device is released, the upper mold returns to the top, and the down-shifting platform also returns to the initial position, still clamping the aluminum sheet, avoiding the need for secondary adjustment, thereby achieving the effect of improving production efficiency.

[0027] 3. Through the switching assembly, after one stamping is completed, the synchronous drive device is operated again to push the second set of dies into the bottom fixed table and the top fixed table. The second set of dies can be matched with the bottom fixed table and the top fixed table through the extrusion between the extrusion block on the third set of dies and the extrusion groove of the second set of dies, and the position can be corrected under the limit of the adjustable block. When the hydraulic device is pressed down, the extrusion block can be separated from the extrusion groove and reset under the action of the torsion spring, thereby achieving the effect of automatic die replacement and automatic correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 It is a top view of the main structure of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the flexible clamping mechanism of the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the top fixing platform of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the regulating component of the present invention;

[0033] Figure 6 It is a schematic cross-sectional view of the structure of the lower moving platform of the present invention;

[0034] Figure 7 For the present invention Figure 6 The structural diagram of the enlarged part at A in the middle;

[0035] Figure 8 It is a partial structural schematic diagram of the power assembly of the present invention;

[0036] Fig. 9 It is a schematic diagram of the stamping process of the present invention;

[0037] Fig.10 It is a schematic diagram of the explosion structure of the switching component of the present invention;

[0038] Fig.11 It is a structural schematic diagram of the slide rail platform of the present invention;

[0039] Fig.12 It is a schematic diagram of the structure of the connection between the upper mold and the lower mold of the present invention;

[0040] Fig.13 For the present invention Fig.12 Schematic diagram of the structure at the enlarged point B in the middle.

[0041] In the figure:

[0042] 1. Stamping base; 2. Hydraulic device; 3. Synchronous drive device; 4. Flexible clamping mechanism; 41. Bottom fixed platform; 42. Top fixed platform; 43. First auxiliary platform; 44. Adjustment assembly; 441. First clamping plate; 442. Second clamping plate; 443. Limit rod; 444. Opposite threaded rod; 445. Lowering platform; 446. Spring; 45. Second auxiliary platform; 46. Power assembly; 461. Servo motor; 462 , transmission gear; 463, driven gear; 464, fixed frame; 465, synchronous transmission belt; 47, lower moving groove; 5, switching assembly; 51, protective shell; 52, adjustable block; 53, driving gear; 54, driving rod; 55, slide rail table; 56, extrusion block; 57, torsion spring; 58, extrusion groove; 6, mold assembly; 61, upper mold; 62, aluminum sheet; 63, lower mold; 64, slide groove; 65, rack. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0044] Example 1, reference Figure 1 - Fig. 9, which is the first embodiment of the present invention, provides a lightweight stamping device for producing aluminum parts, including a stamping base 1, a hydraulic device 2 arranged on the top of the stamping base 1, a switching assembly 5 arranged on both sides of the stamping base 1 and the hydraulic device 2, a synchronous drive device 3 arranged on one side of the switching assembly 5, a flexible clamping mechanism 4 arranged between the stamping base 1 and the hydraulic device 2, and a mold assembly 6 arranged inside the flexible clamping mechanism 4 and the switching assembly 5, the flexible clamping mechanism 4 includes a bottom fixed platform 41 fixedly connected to the top of the stamping base 1, and a top fixed platform 42 fixedly connected to the output end of the hydraulic device 2, the outer wall of the bottom fixed platform 41 is fixedly connected to the second auxiliary platform 45, the outer wall of the top fixed platform 42 is fixedly connected to the first auxiliary platform 43, and an adjustment assembly 44 is arranged between the first auxiliary platform 43 and the second auxiliary platform 45.

[0045] Reference Figure 5 - Figure 6 The adjustment component 44 includes a limit rod 443 and a corresponding threaded rod 444 movably connected to the inside of the first auxiliary platform 43 and the second auxiliary platform 45. The outer wall of the limit rod 443 is slidably connected with the first clamping plate 441 and the second clamping plate 442 respectively. The first clamping plate 441 and the second clamping plate 442 are respectively threadedly connected to the two threaded sections on the corresponding threaded rod 444. When the corresponding threaded rod 444 rotates, the first clamping plate 441 and the second clamping plate 442 approach or move away from each other.

[0046] Specifically, the stamping base 1 bears the stamping pressure, and the hydraulic device 2 outputs pressure for stamping. There are two threaded sections on the opposing threaded rod 444, and the two threaded sections are in opposite directions and have the same distance. The positions of the first clamping plate 441 and the second clamping plate 442 on the opposing threaded rod 444 are also the same to the position between the two threaded sections. The limiting rod 443 provides limitation and support for the first clamping plate 441 and the second clamping plate 442. Pressure sensors are provided on the first clamping plate 441 and the second clamping plate 442. The limiting rod 443 and the opposing threaded rod 444 can both slide inside the first auxiliary platform 43 and the second auxiliary platform 45. The first auxiliary platform 43 moves downward with the top fixed platform 42 through the pressure output of the hydraulic device 2, and the second auxiliary platform 45 is fixed on the top of the stamping base 1 with the bottom fixed platform 41 to bear the stamping pressure.

[0047] Through the rotation of the opposing threaded rod 444, the first clamping plate 441 and the second clamping plate 442 move toward each other under the action of the two opposite threaded sections on the opposing threaded rod 444, and slide and limit on the limiting rod 443 to clamp the aluminum part. The output end of the hydraulic device 2 presses the top fixed platform 42 downward, and the first auxiliary platform 43 moves downward accordingly until the first clamping plate 441 and the second clamping plate 442 are between the first auxiliary platform 43 and the second auxiliary platform 45. The first stamping is completed, the hydraulic device 2 is released, the top fixed platform 42 returns to the top, and the first clamping plate 441 and the second clamping plate 442 also return to the initial position, and the aluminum part is still clamped.

[0048] Reference Figure 6 - Figure 8 The bottom of the limit rod 443 is fixedly connected with a lower moving platform 445, and the lower moving platform 445 is rotatably connected with the opposite threaded rod 444. A lower moving groove 47 is opened inside the stamping base 1, and the inner wall of the lower moving groove 47 is slidably connected with the outer wall of the lower moving platform 445. A spring 446 is fixedly connected between the inner wall of the lower moving groove 47 and the bottom of the lower moving platform 445. A power assembly 46 is arranged on the top of one of the lower moving platforms 445. The power assembly 46 includes a servo motor 461 fixedly connected to the top of the lower moving platform 445. The servo motor 461 The output shaft is fixedly connected with a transmission gear 462, and the outer wall of the opposite threaded rod 444 on the same lower moving platform 445 as the servo motor 461 is fixedly connected with a driven gear 463, the driven gear 463 is meshed with the transmission gear 462, and the outer wall of the limit rod 443 on the same lower moving platform 445 as the servo motor 461 is fixedly connected with a fixing frame 464, the inner wall of the fixing frame 464 is rotatably connected with the output shaft of the servo motor 461, and the outer walls of multiple opposite threaded rods 444 are transmission-connected with a synchronous transmission belt 465.

[0049] Specifically, the limit rod 443, the opposing threaded rod 444, and the power assembly 46 are all seated on the lowering platform 445. The lowering platform 445 can move in the lowering groove 47, and a spring 446 is arranged between the lowering platform 445 and the lowering groove 47. The synchronous transmission belt 465 can drive the opposing threaded rods 444 in the same row to rotate synchronously. The fixed frame 464 can provide support for the output shaft of the servo motor 461 to keep the driven gear 463 engaged with the transmission gear 462.

[0050] By running the servo motor 461, the output shaft of the servo motor 461 drives the opposing threaded rod 444 to rotate via the transmission gear 462 and the driven gear 463, and drives the remaining opposing threaded rods 444 to rotate synchronously via the synchronous transmission belt 465 to clamp the aluminum part. When the hydraulic device 2 is stamping, the lower moving platform 445 squeezes the spring 446 downward and embeds it into the lower moving groove 47. When the hydraulic device 2 is released, the lower moving platform 445 also returns to the initial position.

[0051] Reference Figure 4 - Figure 5 The mold assembly 6 includes an upper mold 61 slidably connected to the top fixed platform 42, a lower mold 63 slidably connected to the bottom fixed platform 41, and an aluminum sheet 62 clamped between the first clamping plate 441 and the second clamping plate 442. The outer walls of the upper mold 61 and the lower mold 63 are both provided with sliding grooves 64, and the outer walls of the top fixed platform 42 and the bottom fixed platform 41 are both fixedly connected with rails, and the sliding grooves 64 are slidably connected to the rails.

[0052] The aluminum sheet 62 is placed between the first clamping plate 441 and the second clamping plate 442 manually or by a robot, and the power assembly 46 is operated for clamping. The hydraulic device 2 is then started, and the output end of the hydraulic device 2 squeezes the upper mold 61 downward through the top fixed platform 42 until the upper mold 61 moves to the bottom. At this time, the aluminum sheet 62 is between the upper mold 61 and the lower mold 63. The first stamping is completed, the hydraulic device 2 is released, the upper mold 61 returns to the top, and the lower platform 445 also returns to the initial position, and the aluminum sheet 62 is still clamped.

[0053] During use, the aluminum sheet 62 is placed between the first clamping plate 441 and the second clamping plate 442 manually or by a robot, and the servo motor 461 is operated. The output shaft of the servo motor 461 drives the opposing threaded rod 444 to rotate via the transmission gear 462 and the driven gear 463, and drives the remaining opposing threaded rods 444 to rotate synchronously via the synchronous transmission belt 465. The first clamping plate 441 and the second clamping plate 442 move toward each other under the action of the two opposite threaded sections on the opposing threaded rod 444, and slide and limit on the limit rod 443, so that the aluminum sheet 62 is clamped between the first clamping plate 441 and the second clamping plate 442. By arranging a plurality of first clamping plates 441 and second clamping plates 442, the clamping area is greatly increased, and the clamping force is adjusted by the servo motor 461 through induction. The clamping effect of flexible clamping is guaranteed, and then the hydraulic device 2 is started. The output end of the hydraulic device 2 squeezes the upper mold 61 downward through the top fixed platform 42, and the first auxiliary platform 43 moves downward accordingly. When the bottom of the upper mold 61 contacts the aluminum sheet 62, it drives the aluminum sheet 62 to be squeezed downward together, and the lower platform 445 squeezes the spring 446 downward accordingly and embeds it into the downward groove 47 until the upper mold 61 moves to the bottom. At this time, the aluminum sheet 62 is between the upper mold 61 and the lower mold 63, and the first clamping plate 441 and the second clamping plate 442 are between the first auxiliary platform 43 and the second auxiliary platform 45. The first stamping is completed, the hydraulic device 2 is released, the upper mold 61 returns to the top, and the lower platform 445 also returns to the initial position, and the aluminum sheet 62 is still clamped.

[0054] Example 2, reference Fig.10 - Fig.13 , which is the second embodiment of the present invention, and which is different from the first embodiment in that: Fig.10 The switching assembly 5 includes a slide rail platform 55 slidably connected to the slide groove 64, a protective shell 51 is fixedly connected to the top of the slide rail platform 55, and multiple protective shells 51 are respectively fixedly connected to the stamping base 1 and the hydraulic device 2 and the outer wall, and the inner wall of the protective shell 51 is rotatably connected to multiple driving rods 54, and the multiple driving rods 54 are respectively sleeved on multiple synchronous driving shafts of the synchronous driving device 3.

[0055] Reference Fig.13 The outer wall of the driving rod 54 is fixedly connected with a driving gear 53, the outer walls of the upper mold 61 and the lower mold 63 are fixedly connected with a rack 65, the driving gear 53 is meshed with the rack 65, the inner walls of the upper mold 61 and the lower mold 63 are rotatably connected with an extrusion block 56, the outer wall of the extrusion block 56 is connected with a torsion spring 57, and multiple torsion springs 57 are respectively arranged inside the upper mold 61 and the lower mold 63, the inner walls of the upper mold 61 and the lower mold 63 are opened with extrusion grooves 58, and the extrusion blocks 56 are overlapped on the inner walls of the corresponding extrusion grooves 58.

[0056] Reference Fig.10 An adjustable stopper 52 is fixedly connected to the outer wall of the protective shell 51 , and the adjustable stopper 52 can correct the positions of the upper mold 61 and the lower mold 63 .

[0057] Specifically, the adjustable stopper 52 can be automatically controlled to correct the mold each time the mold is moved to improve product quality. The synchronous drive device 3 can output power to drive all driving gears 53 to rotate in the same direction to transport the mold. The extrusion block 56 can swing in the extrusion groove 58 through the torsion spring 57. When the extrusion block 56 is in the extrusion groove 58, the latter group of molds can extrude the former group of molds. When the extrusion block 56 is not in the extrusion groove 58, it does not hinder the stamping operation of the hydraulic device 2 on any group of molds.

[0058] During use, different upper molds 61 and lower molds 63 are assembled according to the production of different aluminum parts. The upper molds 61 and lower molds 63 can be multiple sets. The upper molds 61 and lower molds 63 are both put in from the end of the protective shell 51 away from the stamping base 1, and the slide groove 64 is aligned with the slide rail platform 55 and pushed in. Then the synchronous drive device 3 is operated, and the driving rod 54 drives multiple driving gears 53 to rotate synchronously. Since the driving gear 53 is engaged with the rack 65, the upper mold 61 or the lower mold 63 can be pushed in when the driving gear 53 rotates, and the position is corrected under the limit of the adjustable stopper 52, and then the next set of upper molds 61 and lower molds 63 are pushed in, until The upper mold 61 and the lower mold 63 at the front are pushed into the bottom fixed platform 41 and the top fixed platform 42 to complete the assembly. After one stamping is completed, the synchronous drive device 3 is operated again to push the second set of molds into the bottom fixed platform 41 and the top fixed platform 42. The second set of molds can be matched with the bottom fixed platform 41 and the top fixed platform 42 through the extrusion between the extrusion block 56 on the third set of molds and the extrusion groove 58 of the second set of molds, and the position is corrected under the limit of the adjustable stopper 52. When the hydraulic device 2 is pressed down, the extrusion block 56 can be separated from the extrusion groove 58 and reset under the action of the torsion spring 57. Multiple sets of stamping are performed in sequence to complete the product production. The rest of the structure is the same as that of Example 1.

[0059] Working principle of the present invention:

[0060] During operation, different upper molds 61 and lower molds 63 are assembled according to the production of different aluminum parts. The upper molds 61 and lower molds 63 can be multiple sets. The upper molds 61 and lower molds 63 are both inserted from the end of the protective shell 51 away from the stamping base 1, and the slide groove 64 is aligned with the slide rail platform 55 and pushed in. Then the synchronous drive device 3 is operated, and the driving rod 54 drives multiple driving gears 53 to rotate synchronously. Since the driving gear 53 is engaged with the rack 65, the upper mold 61 or the lower mold 63 can be pushed in when the driving gear 53 rotates, and the position is corrected under the limit of the adjustable stop block 52, and then the next set of upper molds 61 and lower molds 63 are pushed in, until the front upper mold 61 and lower mold 63 are pushed into the bottom fixed platform 41 and the top fixed platform 42 to complete the assembly.

[0061] After the assembly is completed, the aluminum sheet 62 is placed between the first clamping plate 441 and the second clamping plate 442 manually or by a robot, and the servo motor 461 is operated. The output shaft of the servo motor 461 drives the opposing threaded rod 444 to rotate via the transmission gear 462 and the driven gear 463, and drives the remaining opposing threaded rods 444 to rotate synchronously via the synchronous transmission belt 465. The first clamping plate 441 and the second clamping plate 442 move toward each other under the action of the two opposite threaded segments on the opposing threaded rod 444, and slide and limit on the limit rod 443, so that the aluminum sheet 62 is clamped between the first clamping plate 441 and the second clamping plate 442. By setting a plurality of first clamping plates 441 and second clamping plates 442, the clamping area is greatly increased, and the clamping force is adjusted by the servo motor 461 through induction, thereby ensuring the clamping effect of flexible clamping.

[0062] Then start the hydraulic device 2, and the output end of the hydraulic device 2 squeezes the upper mold 61 downward through the top fixed platform 42, and the first auxiliary platform 43 moves downward accordingly. When the bottom of the upper mold 61 contacts the aluminum sheet 62, it drives the aluminum sheet 62 to be squeezed downward together, and the lower platform 445 squeezes the spring 446 downward accordingly and embeds it into the downward groove 47 until the upper mold 61 moves to the bottom. At this time, the aluminum sheet 62 is between the upper mold 61 and the lower mold 63, and the first clamping plate 441 and the second clamping plate 442 are between the first auxiliary platform 43 and the second auxiliary platform 45. The first stamping is completed, and the hydraulic device 2 is released. The upper mold 61 returns to the top, and the lower platform 445 also returns to the initial position, and the aluminum sheet 62 is still clamped.

[0063] Run the synchronous drive device 3 again to push the second set of dies onto the bottom fixed platform 41 and the top fixed platform 42. The second set of dies can be fitted with the bottom fixed platform 41 and the top fixed platform 42 through the extrusion between the extrusion block 56 on the third set of dies and the extrusion groove 58 of the second set of dies. The position can be corrected under the limit of the adjustable stopper 52. When the hydraulic device 2 is pressed down, the extrusion block 56 can be disengaged from the extrusion groove 58 and reset under the action of the torsion spring 57. Multiple sets of stamping are performed in sequence to complete the product production.

Claims

1. A punching device for producing lightweight aluminum parts, comprising a punching base (1), a hydraulic device (2) arranged on the top of the punching base (1), a switching assembly (5) arranged on both sides of the punching base (1) and the hydraulic device (2), a synchronous drive device (3) arranged on one side of the switching assembly (5), a flexible clamping mechanism (4) arranged between the punching base (1) and the hydraulic device (2), and a mold assembly (6) arranged inside the flexible clamping mechanism (4) and the switching assembly (5), characterized in that: The flexible clamping mechanism (4) comprises a bottom fixed platform (41) fixedly connected to the top of the stamping bottom platform (1), and a top fixed platform (42) fixedly connected to the output end of the hydraulic device (2); the outer wall of the bottom fixed platform (41) is fixedly connected to a second auxiliary platform (45); the outer wall of the top fixed platform (42) is fixedly connected to a first auxiliary platform (43); and an adjustment component (44) is provided between the first auxiliary platform (43) and the second auxiliary platform (45); The adjustment assembly (44) includes a limit rod (443) and an opposing threaded rod (444) movably connected to the inside of the first auxiliary platform (43) and the second auxiliary platform (45); the outer wall of the limit rod (443) is slidably connected with a first clamping plate (441) and a second clamping plate (442); the first clamping plate (441) and the second clamping plate (442) are respectively threadedly connected to two threaded sections on the opposing threaded rod (444); when the opposing threaded rod (444) rotates, the first clamping plate (441) and the second clamping plate (442) move closer to or farther away from each other.

2. The punching device for lightweight aluminum parts production according to claim 1, characterized in that: The bottom of the limiting rod (443) is fixedly connected to a lowering platform (445), and the lowering platform (445) is rotatably connected to the opposite threaded rod (444). A lowering groove (47) is provided inside the stamping base (1), and the inner wall of the lowering groove (47) is slidably connected to the outer wall of the lowering platform (445). A spring (446) is fixedly connected between the inner wall of the lowering groove (47) and the bottom of the lowering platform (445).

3. The punching device for lightweight aluminum parts production according to claim 2, characterized in that: A power assembly (46) is provided on the top of one of the lower moving platforms (445), and the power assembly (46) includes a servo motor (461) fixedly connected to the top of the lower moving platform (445), the output shaft of the servo motor (461) is fixedly connected to a transmission gear (462), and the outer wall of the threaded rod (444) opposite to the servo motor (461) on the same lower moving platform (445) is fixedly connected to a driven gear (463), and the driven gear (463) is meshed with the transmission gear (462).

4. The punching device for lightweight aluminum parts production according to claim 3 is characterized in that: A fixing frame (464) is fixedly connected to the outer wall of the limit rod (443) on the same lower moving platform (445) as the servo motor (461), the inner wall of the fixing frame (464) is rotatably connected to the output shaft of the servo motor (461), and a synchronous transmission belt (465) is transmission-connected between the outer walls of the plurality of opposing threaded rods (444).

5. The punching device for lightweight aluminum parts production according to claim 1, characterized in that: The mold assembly (6) comprises an upper mold (61) slidably connected to a top fixed platform (42), a lower mold (63) slidably connected to a bottom fixed platform (41), and an aluminum sheet (62) clamped between a first clamping plate (441) and a second clamping plate (442).

6. The punching device for lightweight aluminum parts production according to claim 5, characterized in that: The outer walls of the upper mold (61) and the lower mold (63) are both provided with a slide groove (64), the outer walls of the top fixed platform (42) and the bottom fixed platform (41) are both fixedly connected with a track, and the slide groove (64) is slidably connected to the track.

7. The punching device for lightweight aluminum parts production according to claim 6, characterized in that: The switching assembly (5) comprises a slide rail platform (55) slidably connected to the slide groove (64); a protective shell (51) is fixedly connected to the top of the slide rail platform (55); a plurality of protective shells (51) are respectively fixedly connected to the stamping base (1) and the hydraulic device (2) and the outer wall; a plurality of drive rods (54) are rotatably connected to the inner wall of the protective shell (51); and the plurality of drive rods (54) are respectively sleeved on a plurality of synchronous drive shafts of the synchronous drive device (3).

8. The punching device for lightweight aluminum parts production according to claim 7, characterized in that: The outer wall of the driving rod (54) is fixedly connected with a driving gear (53), the outer walls of the upper mold (61) and the lower mold (63) are fixedly connected with a rack (65), and the driving gear (53) is meshed with the rack (65).

9. The punching device for lightweight aluminum parts production according to claim 8, characterized in that: The inner walls of the upper mold (61) and the lower mold (63) are rotatably connected to an extrusion block (56), and the outer wall of the extrusion block (56) is connected to a torsion spring (57). A plurality of torsion springs (57) are respectively arranged inside the upper mold (61) and the lower mold (63). The inner walls of the upper mold (61) and the lower mold (63) are provided with an extrusion groove (58), and the extrusion block (56) is overlapped on the inner wall of the corresponding extrusion groove (58).

10. The punching device for lightweight aluminum parts production according to claim 9, characterized in that: An adjustable stopper (52) is fixedly connected to the outer wall of the protective shell (51), and the adjustable stopper (52) can correct the positions of the upper mold (61) and the lower mold (63).

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