Stamping device and precision stamping forming method for automobile die forging

Abstract

The invention relates to the technical field of stamping devices, and discloses a stamping device and a precision stamping forming method for automobile die forgs.Through cooperation of a discharging mechanism, a cleaning assembly and an oil applying assembly, in the production process of aluminum alloy precision die forgs.A discharging plate can reciprocate on a supporting frame, a stamped workpiece is pushed out of a lower die, and the stamping device is used for stamping the aluminum alloy precision die forgs.According to the stamping device and the precision stamping forming method for the automobile die forgs. The lower die is cleaned through a cleaning brush roller of the cleaning assembly, aluminum scraps remaining in the die are prevented from blocking the die, normal operation of the device is guaranteed, the aluminum scraps are prevented from abrading a workpiece, the surface quality and precision of the workpiece are improved, after the aluminum scraps are cleaned up, the cleaning brush roller is folded through a conversion shaft, and an oil coating roller is put down, so that the oil coating efficiency is improved. In the returning process of the discharging plate, stamping oil is sprayed to the lower die through the oil dripping nozzle, and the stamping oil on the lower die is evenly smeared through the oil smearing roller along with movement of the discharging plate, so that discharging, aluminum skimming cleaning and stamping oil smearing are completed in one step, and the production efficiency of aluminum alloy precision die forgings is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of stamping devices, and specifically to a stamping device and a method for precision stamping and forming of automotive die forgings. Background Art

[0002] Aluminum alloy precision die forgings are aluminum alloy parts manufactured through precision die forging processes. Their characteristics lie in high dimensional accuracy and the direct forming ability for complex shapes. Their production process is to bring the workpiece to be forged (such as a sheet) into contact with the mold surface through a hydraulic device, and by means of stamping, prompt the formation of the required shape on the workpiece surface (such as holes or grooves on the sheet surface). This process does not require cutting and machining and is widely applied to the production of aluminum alloy sheet workpieces.

[0003] Chinese Patent CN220970483U discloses a stamping device for energy-saving production of aluminum products. Through the setting of a protection mechanism, the aluminum soft plate is straightened by two groups of straightening rollers and then processed and stamped at the stamping table, avoiding stamping failure caused by the bending of the aluminum soft plate during the feeding process and reducing the loss of the stamped aluminum plate. At the same time, the surface of the aluminum soft plate is oiled by an oil coating roller, avoiding scratching of the aluminum soft plate during stamping. However, during the stamping process, due to the relatively soft aluminum alloy material, aluminum chips are easily generated during stamping. Although the prior art avoids scratching the aluminum soft plate during stamping by oiling the surface of the aluminum soft plate, the aluminum chips remaining in the mold will cause the mold to become blocked, thus affecting the normal operation of the stamping device, and the aluminum chips remaining in the mold will also wear the workpiece, thereby reducing the surface quality and accuracy of the workpiece. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a stamping device and a method for precision stamping and forming of automotive die forgings to overcome the above-mentioned technical problems existing in the related prior art.

[0005] To solve the above technical problems, the present invention provides the following technical solution: A stamping device, including a main body and a press provided on the main body. A lower die is installed on the main body, and an upper die is installed on the press. The press is used to push the upper die to close with the lower die to stamp an aluminum alloy sheet. A blanking mechanism, a cleaning component and an oiling component are provided on the main body. The blanking mechanism includes a support frame, a conversion component and a blanking plate. The two support frames are respectively arranged on both sides of the lower die. The conversion component is arranged at both ends of the support frame. The blanking plate is installed between the two support frames. The blanking plate can perform reciprocating linear motion on the support frame. A conversion shaft is installed on the blanking plate. A vertical fixing frame and a horizontal fixing frame are arranged on the conversion shaft. The cleaning component includes a cleaning brush roller. The cleaning brush roller is installed on the vertical fixing frame. When the blanking plate pushes the workpiece out of the lower die, the cleaning brush roller cleans the aluminum chips on the lower die. The oiling component includes an oiling roller and an oil dripping nozzle. The oiling roller and the oil dripping nozzle are sequentially installed on the horizontal fixing frame. When the blanking plate moves to the end of the support frame, the conversion component drives the conversion shaft to rotate, so as to exchange the positions of the cleaning brush roller and the oiling roller, so that when the blanking plate returns, the oiling roller applies stamping oil on the cleaned lower die.

[0006] Preferably, the support frame is fixedly connected to the main body. Slide rails are fixedly installed on both support frames. The slide rails are located above the lower die. Chute grooves are opened on both support frames. The chute grooves are located directly above the slide rails. A limiting strip is fixedly connected to the top of the chute groove. The limiting strip protrudes downward from the top of the chute groove. Locking grooves are opened at both ends of the top of the support frame. The bottom of the locking groove communicates with the chute groove. The limiting strip is disconnected under the locking groove, forming a gap between both ends of the locking groove.

[0007] Preferably, the conversion component includes a locking plate. The locking plate is slidably installed in the locking groove. The upper side of the locking plate is fixedly connected to the lower end of a support spring. The upper end of the support spring is fixedly connected to the top of the locking groove. A locking block is fixedly connected to the side of the bottom of the locking plate close to the lower die. The support spring pushes the locking plate to abut against the bottom of the locking groove, so that the locking block is inserted into the chute groove to fill the gap part where the limiting strip is disconnected. At this time, the bottom of the locking block is flush with the bottom of the limiting strip. A driving rack is fixedly connected to each of the two support frames.

[0008] Preferably, both sides of the unloading plate are slidably mounted on the two slide rails through sliders, the unloading plate is suspended above the lower mold, a pushing groove is provided at one end of the unloading plate facing the lower mold, the inner diameter of the pushing groove matches the outer diameter of the lower mold, a conversion groove is provided at the other end of the unloading plate, fixed seats are provided on both sides of the conversion groove, the fixed seats are fixedly connected to the upper side of the unloading plate, the conversion shaft is rotatably mounted on the fixed seat, and both ends of the conversion shaft pass through the fixed seat and are respectively inserted into the two slide grooves.

[0009] Preferably, the vertical fixing frame and the horizontal fixing frame are both fixedly connected to the outside of the conversion shaft, and the vertical fixing frame and the horizontal fixing frame are vertical, and two limit openings are opened on the end of the conversion shaft inserted into the slide groove, and the two limit openings correspond to the vertical fixing frame and the horizontal fixing frame respectively, and sector gears are fixedly connected to both ends of the conversion shaft.

[0010] Preferably, the press is fixedly mounted on the upper end of the main body, the lower mold and the upper mold are fixedly connected to the upper side of the main body and the lower side of the press respectively, a collection box is provided on the main body, the collection box is clamped between the two support frames, a mounting seat is fixedly connected to one side of the main body close to the collection box, and cabinet doors are movably installed on both sides of the main body.

[0011] Preferably, the cleaning assembly also includes a driving motor, a dust suction head and a dust suction device, the cleaning brush roller is rotatably mounted on the vertical fixing frame, a plurality of bristles are evenly distributed on the cleaning brush roller, the driving motor is fixedly mounted on the conversion shaft and is located at one end of the cleaning brush roller, the output shaft of the driving motor is coaxially fixedly connected to one end of the cleaning brush roller, the dust suction head is fixedly connected to a side of the vertical fixing frame away from the horizontal fixing frame, the dust suction head corresponds to the cleaning brush roller, the dust suction device is fixedly mounted in a cabinet door on one side of the main body, and the dust suction device is connected to the dust suction head through a collecting pipe.

[0012] Preferably, the oiling assembly also includes an oil pump and an oil storage tank, the oiling roller is rotatably mounted on the horizontal fixing frame, and the oiling roller is a soft roller made of rubber, a plurality of oil dripping nozzles are evenly fixedly connected to the side of the horizontal fixing frame away from the vertical fixing frame, the oil pump and the oil storage tank are sequentially mounted in the cabinet door on the other side of the main body, the oil pump and the oil storage tank are connected by an oil pipe, and the oil pump and a plurality of oil dripping nozzles are connected by another oil pipe.

[0013] Preferably, the unloading mechanism further comprises a driving cylinder, the driving cylinder is fixedly mounted on the mounting seat, and the output shaft of the driving cylinder is fixedly connected to the unloading plate.

[0014] The present invention also provides a precision stamping forming method for automotive die forgings, which uses a stamping device;

[0015] It includes the following steps:

[0016] S1. During the processing of aluminum alloy precision die forgings, before stamping the aluminum alloy sheet, the stripper plate of the stripper mechanism moves from the initial end of the support frame to the other end of the support frame, and the cleaning brush roller of the cleaning component cleans the lower die;

[0017] S2. After the stripper plate moves to the other end of the support frame and the cleaning brush roller completes the cleaning work, the conversion shaft rotates forward under the drive of the conversion component, retracts the cleaning brush roller, and lowers the oiling roller;

[0018] S3. After the oiling roller is lowered, the stripper plate starts to return, and the oil dripping nozzle of the oiling component sprays stamping oil onto the cleaned lower die. The moving stripper plate drives the oiling roller to roll on the lower die, and spreads the stamping oil on the upper die;

[0019] S4. After the stripper plate returns to the initial end of the support frame and the oiling component completes the application of stamping oil, the oil dripping nozzle stops spraying stamping oil. At the same time, the conversion component drives the conversion shaft to rotate reversely, retracts the oiling roller, and lowers the cleaning brush roller;

[0020] S5. Subsequently, the aluminum alloy sheet to be stamped is placed on the lower die, the press pushes the upper die and the lower die to close, and stamps the aluminum alloy sheet. After stamping, the press lifts the upper die, and the stripper plate moves towards the other end of the support frame again, pushing the stamped workpiece out of the lower die, and repeating the above steps to clean and apply stamping oil to the lower die, enabling the device to stamp the next workpiece.

[0021] Compared with the prior art, the present invention provides a stamping device and a precision stamping forming method for automotive die forgings, having the following beneficial effects:

[0022] 1. In the stamping device and the precision stamping forming method for automotive die forgings, through the cooperation of the stripper mechanism, the cleaning component and the oiling component, during the production process of aluminum alloy precision die forgings, the stripper plate reciprocates on the support frame, pushing the stamped workpiece out of the lower die, and cleaning the lower die with the cleaning brush roller of the cleaning component, avoiding the blockage of the die by aluminum chips remaining in the die, ensuring the normal operation of the device, preventing the aluminum chips from wearing the workpiece, improving the surface quality and precision of the workpiece. After cleaning the aluminum chips, the conversion shaft retracts the cleaning brush roller and lowers the oiling roller. During the return journey of the stripper plate, the oil dripping nozzle sprays stamping oil onto the lower die, and as the stripper plate moves, the oiling roller spreads the stamping oil on the lower die, thus completing the steps of stripping, cleaning aluminum chips and applying stamping oil in one step, improving the production efficiency of aluminum alloy precision die forgings.

[0023] 2. The stamping device and the precision stamping forming method for automobile die forgings, through the setting of the conversion component, when the unloading plate drives the conversion shaft to move, the conversion shaft cannot rotate under the restriction of the limit bar, thereby ensuring that the cleaning brush roller and the oiling roller can operate normally on the lower die. When the conversion shaft moves to below the locking block and is driven by the driving rack, the conversion shaft can rotate, thereby switching the positions of the cleaning brush roller and the oiling roller, and sequentially realizing the cleaning work of aluminum chips and applying stamping oil to the cleaned lower die. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 is a structural schematic diagram of the cleaning component of the present invention;

[0026] Figure 3 is Figure 2 a partial enlarged structural schematic diagram of A of

[0027] Figure 4 is a structural schematic diagram of the interior of the support frame of the present invention;

[0028] Figure 5 is Figure 4 a partial enlarged schematic diagram of B of

[0029] Figure 6 is a side view structural schematic diagram of the oiling component of the present invention;

[0030] Figure 7 is a schematic diagram of the positional relationship of components such as the conversion shaft of the present invention;

[0031] Figure 8 is Figure 7 a partial enlarged structural schematic diagram of C of

[0032] In the figure: 1, main body; 12, press; 13, lower die; 14, upper die; 15, mounting seat; 16, cabinet door; 2, unloading mechanism; 21, support frame; 211, slide rail; 212, chute; 213, limit bar; 214, locking groove; 3, conversion component; 31, locking plate; 32, support spring; 33, locking block; 34, driving rack; 4, unloading plate; 41, pushing groove; 42, conversion groove; 43, fixed seat; 44, conversion shaft; 441, limiting port; 442, sector gear; 45, vertical fixing frame; 46, horizontal fixing frame; 47, driving cylinder; 5, cleaning component; 51, cleaning brush roller; 52, driving motor; 53, dust suction head; 54, dust suction device; 55, collecting pipe; 6, oiling component; 61, oiling roller; 62, oil dripping nozzle; 63, oil pump; 64, oil storage tank; 65, oil delivery pipe; 7, collecting box. DETAILED DESCRIPTION OF THE INVENTION

[0033] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1;

[0035] Please refer to Figures 1-8 , a stamping device, including a main body 1 and a press 12 provided on the main body 1. A lower die 13 is installed on the main body 1, and an upper die 14 is installed on the press 12. The press 12 is used to push the upper die 14 to close with the lower die 13 to stamp an aluminum alloy plate. A blanking mechanism 2, a cleaning assembly 5, and an oiling assembly 6 are provided on the main body 1. The blanking mechanism 2 includes a support frame 21, a conversion assembly 3, and a blanking plate 4. The two support frames 21 are respectively provided on both sides of the lower die 13. The conversion assembly 3 is provided at both ends of the support frame 21. The blanking plate 4 is installed between the two support frames 21. The blanking plate 4 can perform reciprocating linear motion on the support frame 21. A conversion shaft 44 is installed on the blanking plate 4, and a vertical fixing frame 45 and a horizontal fixing frame 46 are provided on the conversion shaft 44. The cleaning assembly 5 includes a cleaning brush roller 51, and the cleaning brush roller 51 is installed on the vertical fixing frame 45. When the blanking plate 4 pushes the workpiece out of the lower die 13, the cleaning brush roller 51 cleans the aluminum chips on the lower die 13. The oiling assembly 6 includes an oiling roller 61 and an oil dripping nozzle 62. The oiling roller 61 and the oil dripping nozzle 62 are sequentially installed on the horizontal fixing frame 46. When the blanking plate 4 moves to the end of the support frame 21, the conversion assembly 3 drives the conversion shaft 44 to rotate, thereby swapping the positions of the cleaning brush roller 51 and the oiling roller 61, so that when the blanking plate 4 returns, the oiling roller 61 applies stamping oil on the cleaned lower die 13.

[0036] Among them, during use, first drive the discharge plate 4 located at the initial end of the support frame 21 to move towards the other end of the support frame 21. When the discharge plate 4 is at the initial end of the support frame 21, the vertical fixed frame 45 on the conversion shaft 44 is vertically downward, making the cleaning brush roller 51 correspond to the lower die 13, while the horizontal fixed frame 46 is lifted upward and kept parallel to the lower die 13. When the discharge plate 4 moves from the initial end towards the other end of the support frame 21, the discharge plate 4 drives the cleaning brush roller 51 to pass over the upper die 14. At the same time, the cleaning brush roller 51 rotates to clean the lower die 13. When the discharge plate 4 moves to the other end of the support frame 21, the cleaning brush roller 51 cleans the lower die 13 completely, and the conversion shaft 44 in the downward state of the vertical fixed frame 45 triggers the conversion component 3 at this end, causing the conversion shaft 44 to rotate forward by ninety degrees, lifting the vertical fixed frame 45 upward to be parallel to the lower die 13. The vertical fixed frame 45 lifts the cleaning brush roller 51 away from the lower die 13. At this time, the cleaning brush roller 51 stops rotating, while the horizontal fixed frame 46 turns vertically downward, pressing the oiling roller 61 against the lower die 13. Subsequently, the discharge plate 4 starts to return, moving towards the initial end of the support frame 21. During the return journey of the discharge plate 4, it will drive the oiling roller 61 to move in the same direction, causing the oiling roller 61 to roll on the lower die 13. At the same time, the oil nozzle 62 sprays stamping oil, and the oiling roller 61 rolling on the lower die 13 evenly applies the stamping oil on the lower die 13. When the discharge plate 4 moves back to the initial end, the oil nozzle 62 stops spraying stamping oil. At the same time, the conversion shaft 44 in the downward state of the horizontal fixed frame 46 triggers the conversion component 3 at the initial end, causing the conversion shaft 44 to rotate backward by ninety degrees, lifting the horizontal fixed frame 46 upward to be parallel to the lower die 13. The horizontal fixed frame 46 lifts the oiling roller 61 away from the lower die 13, while the vertical fixed frame 45 turns vertically downward, making the cleaning brush roller 51 correspond to the lower die 13 again. Subsequently, the aluminum alloy sheet to be processed is placed on the lower die 13, and the press 12 pushes the upper die 14 downward to make the upper die 14 and the lower die 13 close the mold, thereby stamping the aluminum alloy sheet. During the stamping process, the stamping oil plays a role in reducing friction and wear, improving the surface quality and accuracy of the workpiece, ensuring the dimensional stability and shape accuracy of the stamped parts, and dissipating a large amount of heat generated during the stamping process, preventing the mold temperature from rising and extending the service life of the mold. After the stamping is completed, the press 12 lifts the upper die 14 again to separate the upper die 14 from the lower die 13. At this time, the discharge plate 4 moves from the initial end of the support frame 21 towards the other end of the support frame 21 again, thereby pushing the workpiece completed on the mold out of the mold, and repeating the above steps. The cleaning brush roller 51 cleans the lower die 13 to remove the aluminum chips on the lower die 13. When the discharge plate 4 moves to the other end of the support frame 21, the workpiece is completely pushed out of the lower die 13. At the same time, the conversion shaft 44 completes the switching, making the oiling roller 61 press against the lower die 13 again. Subsequently, the discharge plate 4 returns to the initial end of the support frame 21 and repeats the above steps. After applying the stamping oil on the lower die 13, the oiling roller 61 is retracted, the cleaning brush roller 51 is lowered, and the stamping of the next workpiece begins.

[0037] The difference from the above embodiment is that the support frame 21 is fixedly connected to the main body 1. Slide rails 211 are fixedly installed on both support frames 21. The slide rails 211 are located at the upper end of the lower die 13. Chutes 212 are formed on both support frames 21. The chutes 212 are located directly above the slide rails 211. A limiting strip 213 is fixedly connected to the top of the chute 212. The limiting strip 213 protrudes downward from the top of the chute 212. Locking grooves 214 are formed at both ends of the top of the support frame 21. The bottom of the locking groove 214 communicates with the chute 212. The limiting strip 213 is disconnected under the locking groove 214, forming a gap between the two ends of the locking groove 214.

[0038] The difference from the above embodiment is that the conversion assembly 3 includes a locking plate 31. The locking plate 31 is slidably installed in the locking groove 214. The upper side of the locking plate 31 is fixedly connected to the lower end of a support spring 32. The upper end of the support spring 32 is fixedly connected to the top of the locking groove 214. A locking block 33 is fixedly connected to one side of the bottom of the locking plate 31 close to the lower die 13. The support spring 32 pushes the locking plate 31 against the bottom of the locking groove 214, so that the locking block 33 is inserted into the chute 212 to fill the gap part where the limiting strip 213 is disconnected. At this time, the bottom of the locking block 33 is flush with the bottom of the limiting strip 213. A driving rack 34 is fixedly connected to each of the two support frames 21.

[0039] Among them, a driving rack 34 is located at the initial end of a support frame 21, connected to the outside of the locking groove 214 near the initial end of the support frame 21, and is used to drive the conversion shaft 44 to rotate in the reverse direction. Another driving rack 34 is located on the outside of the locking groove 214 far from the initial end of another support frame 21, and is used to drive the conversion shaft 44 to rotate in the forward direction. During the process that the discharge plate 4 drives the conversion shaft 44 to reciprocate on the support frame 21, both ends of the conversion shaft 44 slide in the sliding grooves 212 of the two support frames 21. The limiting strip 213 at the top of the sliding groove 212 abuts against the end of the conversion shaft 44, so that the conversion shaft 44 cannot rotate. When the conversion shaft 44 does not trigger the conversion assembly 3, the driving rack 34 will not drive the conversion shaft 44 to rotate. Thus, the support spring 32 pushes the locking plate 31 to abut against the bottom of the locking groove 214, so that the locking block 33 also abuts against the end of the conversion shaft 44, and restricts the conversion shaft 44 in the same way as the limiting strip 213. When the conversion shaft 44 triggers the conversion assembly 3, the driving rack 34 drives the conversion shaft 44 to rotate. During the rotation process of the end of the conversion shaft 44, the locking block 33 can be jacked up, so that the locking block 33 loses the restriction on the conversion shaft 44. At the same time, the locking plate 31 moves upward in the locking groove 214 and compresses the support spring 32. After the conversion shaft 44 finishes rotating, the end of the conversion shaft 44 puts down the locking block 33, and the compressed support spring 32 restores its deformation, so as to push the locking plate 31 to the bottom of the locking groove 214 again, making the locking block 33 flush with the limiting strip 213, and being able to restrict the conversion shaft 44 again.

[0040] The difference from the above embodiment is that both sides of the discharge plate 4 are slidably installed on the two slide rails 211 through sliders. The discharge plate 4 is suspended above the lower die 13. One end of the discharge plate 4 facing the lower die 13 is provided with a material pushing groove 41, and the inner diameter of the material pushing groove 41 fits the outer diameter of the lower die 13. The other end of the discharge plate 4 is provided with a conversion groove 42. Fixed seats 43 are arranged on both sides of the conversion groove 42. The fixed seats 43 are fixedly connected to the upper side of the discharge plate 4. The conversion shaft 44 is rotatably installed on the fixed seats 43, and both ends of the conversion shaft 44 penetrate through the fixed seats 43 and are respectively inserted into the two sliding grooves 212.

[0041] Among them, the discharge plate 4 moves on the slide rail 211 through the slider. When the discharge plate 4 moves from the initial end of the support frame 21 to the other end of the support frame 21, the vertical fixed frame 45 drops from the conversion groove 42, so that the cleaning brush roller 51 contacts the lower die 13, while the horizontal fixed frame 46 with the oiling roller 61 suspended above the conversion groove 42. When the discharge plate 4 moves from the other end of the support frame 21 to the initial end of the support frame 21, the horizontal fixed frame 46 drops from the conversion groove 42, so that the oiling roller 61 contacts the lower die 13, while the vertical fixed frame 45 with the cleaning brush roller 51 suspended above the conversion groove 42.

[0042] The difference from the above embodiment is that both the vertical fixing frame 45 and the horizontal fixing frame 46 are fixedly connected to the outside of the conversion shaft 44, and the vertical fixing frame 45 and the horizontal fixing frame 46 are perpendicular. Two limiting ports 441 are provided at the end of the conversion shaft 44 inserted into the sliding groove 212. The two limiting ports 441 correspond to the vertical fixing frame 45 and the horizontal fixing frame 46 respectively. Sector gears 442 are fixedly connected to both ends of the conversion shaft 44.

[0043] Among them, the two limiting ports 441 at the end of the conversion shaft 44 are perpendicular to each other. The sector gears 442 at both ends of the conversion shaft 44 are installed in a staggered manner. When the vertical fixing frame 45 is vertically downward, the limiting port 441 corresponding to the vertical fixing frame 45 faces upward. When the unloading plate 4 pushes the workpiece out of the mold through the pushing groove 41, the limiting strip 213 abuts against the limiting port 441 to prevent the conversion shaft 44 from rotating. And the sector gear 442 on the conversion shaft 44 corresponding to the driving rack 34 far from the initial end of the support frame 21 is in a raised state. When the unloading plate 4 drives the conversion shaft 44 to move under the driving rack 34, the sector gear 442 can mesh with the driving rack 34, thereby driving the conversion shaft 44 to rotate forward. And the sector gear 442 on the conversion shaft 44 corresponding to the driving rack 34 close to the initial end of the support frame 21 is in a lowered state. When the unloading plate 4 drives the conversion shaft 44 to move under the driving rack 34, the sector gear 442 does not mesh with the driving rack 34, so that the conversion shaft 44 directly passes under the driving rack 34 without rotating. After the conversion shaft 44 rotates forward by 90 degrees, the sector gear 442 on the conversion shaft 44 corresponding to the driving rack 34 far from the initial end of the support frame 21 disengages from the driving rack 34 and turns into a lowered state, while the sector gear 442 on the conversion shaft 44 corresponding to the driving rack 34 close to the initial end of the support frame 21 turns into a raised state. At the same time, the limiting port 441 on the conversion shaft 44 corresponding to the horizontal fixing frame 46 faces upward. When the unloading plate 4 returns to the initial end of the support frame 21, the limiting strip 213 abuts against the limiting port 441 to limit the conversion shaft 44. At the same time, when the unloading plate 4 returns, when the conversion shaft 44 passes under the driving rack 34 far from the initial end of the support frame 21 again, the lowered sector gear 442 does not mesh with the driving rack 34, so that the conversion shaft 44 directly passes under the driving rack 34 without rotating. When the unloading plate 4 drives the conversion shaft 44 to move back to the initial end, the sector gear 442 on the conversion shaft 44 corresponding to the driving rack 34 close to the initial end of the support frame 21 meshes with the driving rack 34, thereby driving the conversion shaft 44 to rotate reversely by 90 degrees, so that the sector gear 442 turns into a lowered state, while the sector gear 442 corresponding to the driving rack 34 far from the initial end of the support frame 21 turns into a raised state. At the same time, the limiting port 441 on the conversion shaft 44 corresponding to the vertical fixing frame 45 faces upward again and abuts against the limiting strip 213. After the device completes stamping, the unloading plate 4 makes a reciprocating motion again, repeating the above steps.

[0044] The difference from the above-mentioned embodiment lies in that the press 12 is fixedly mounted on the upper end of the main body 1, the lower die 13 and the upper die 14 are respectively fixedly connected to the upper side of the main body 1 and the lower side of the press 12, a collecting box 7 is arranged on the main body 1, the collecting box 7 is clamped between two supporting frames 21, a mounting seat 15 is fixedly connected to one side of the main body 1 close to the collecting box 7, and cabinet doors 16 are movably mounted on both sides of the main body 1.

[0045] Among them, the collecting box 7 is arranged at the initial end of the support frame 21. When the unloading plate 4 stops at the initial end of the support frame 21, the stamping oil remaining on the oiling roller 61 drips into the collecting box 7 under the action of gravity and is collected by the collecting box 7, thereby preventing the stamping oil from scattering and dirtying the device. In addition, the stamping oil collected by the collecting box 7 can be reused after filtering, thereby saving the consumption of stamping oil.

[0046] The difference from the above embodiment is that the cleaning component 5 also includes a driving motor 52, a dust collector head 53 and a dust collection device 54. The cleaning brush roller 51 is rotatably mounted on the vertical fixing frame 45. A number of bristles are evenly distributed on the cleaning brush roller 51. The driving motor 52 is fixedly mounted on the conversion shaft 44 and is located at one end of the cleaning brush roller 51. The output shaft of the driving motor 52 is coaxially fixedly connected to one end of the cleaning brush roller 51. The dust collector head 53 is fixedly connected to the side of the vertical fixing frame 45 away from the horizontal fixing frame 46. The dust collector head 53 corresponds to the cleaning brush roller 51. The dust collection device 54 is fixedly mounted in the cabinet door 16 on one side of the main body 1. The dust collection device 54 and the dust collector head 53 are connected through a collecting pipe 55.

[0047] Among them, when the vertical fixing frame 45 is vertically downward so that the cleaning brush roller 51 is located on the lower mold 13, the driving motor 52 drives the cleaning brush roller 51 to rotate. As the unloading plate 4 moves toward the other end of the support frame 21, the rotating cleaning brush roller 51 brushes the lower mold 13 with the bristles thereon, thereby brushing off the aluminum chips on the lower mold 13. At the same time, the dust suction device 54 collects the aluminum chips brushed off by the cleaning brush roller 51 through the dust suction head 53. When the unloading plate 4 moves to the other end of the support frame 21, the cleaning brush roller 51 cleans the lower mold 13, and the driving motor 52 and the dust suction device 54 both stop working.

[0048] The difference from the above-mentioned embodiment is that the oiling component 6 also includes an oil pump 63 and an oil storage tank 64, the oiling roller 61 is rotatably mounted on the horizontal fixing frame 46, and the oiling roller 61 is a soft roller made of rubber, and a plurality of oil dripping nozzles 62 are evenly fixedly connected to the side of the horizontal fixing frame 46 away from the vertical fixing frame 45, the oil pump 63 and the oil storage tank 64 are sequentially mounted in the cabinet door 16 on the other side of the main body 1, the oil pump 63 and the oil storage tank 64 are connected by an oil pipe 65, and the oil pump 63 and a plurality of oil dripping nozzles 62 are connected by another oil pipe 65.

[0049] Among them, when the horizontal fixing frame 46 is vertically downward, the oiling roller 61 is in contact with the lower mold 13. Since the oiling roller 61 is a soft roller made of rubber material, the oiling roller 61 can fit tightly against the surface of the lower mold 13. When the unloading plate 4 returns, the oil pump 63 transports the stamping oil in the oil tank 64 to the oil dripping nozzle 62 through the oil pipe 65. The oil dripping nozzle 62 sprays the stamping oil on the lower mold 13. As the unloading plate 4 moves, the oiling roller 61 rolls on the lower mold 13, thereby evenly spreading the stamping oil on the lower mold 13. When the unloading plate 4 moves back to the initial end, the oil pump 63 stops working and the oil dripping nozzle 62 no longer sprays stamping oil.

[0050] Embodiment 2:

[0051] The difference from the above embodiment is that the unloading mechanism 2 further comprises a driving cylinder 47 , which is fixedly mounted on the mounting seat 15 , and an output shaft of the driving cylinder 47 is fixedly connected to the unloading plate 4 .

[0052] Among them, at the initial stage, the output shaft of the driving cylinder 47 is completely retracted, so that the unloading plate 4 stops at the initial end of the support frame 21. When the unloading plate 4 needs to move back and forth, the driving cylinder 47 extends the output shaft to push the unloading plate 4 to move to the other end of the support frame 21. After the unloading plate 4 moves to the other end of the support frame 21, the driving cylinder 47 retracts the output shaft, so that the unloading plate 4 returns and moves back to the initial end.

[0053] The present invention also provides a precision stamping method for automobile die forgings, which uses a stamping device;

[0054] The following steps are involved:

[0055] S1. During the processing of aluminum alloy precision die forgings, before stamping the aluminum alloy plate, the unloading plate 4 of the unloading mechanism 2 moves from the initial end of the support frame 21 to the other end of the support frame 21, and the cleaning brush roller 51 of the cleaning assembly 5 cleans the lower die 13;

[0056] S2. After the unloading plate 4 moves to the other end of the support frame 21, the cleaning brush roller 51 completes the cleaning work, and the conversion shaft 44 rotates forward under the drive of the conversion assembly 3, retracts the cleaning brush roller 51, and puts down the oiling roller 61;

[0057] S3. After the oiling roller 61 is put down, the unloading plate 4 starts to return, and the oiling nozzle 62 of the oiling assembly 6 sprays stamping oil to the cleaned lower die 13. The moving unloading plate 4 drives the oiling roller 61 to roll on the lower die 13 to evenly spread the stamping oil on the upper die 14.

[0058] After the stripper plate 4 returns to the initial end of the support frame 21, after the upper oiling assembly 6 finishes applying the stamping oil, the oil dripping nozzle 62 stops spraying the stamping oil. At the same time, the conversion assembly 3 drives the conversion shaft 44 to rotate in the reverse direction, retracts the oiling roller 61, and lowers the cleaning brush roller 51;

[0059] S5. Subsequently, place the aluminum alloy plate to be stamped on the lower die 13. The press 12 pushes the upper die 14 to close with the lower die 13 to stamp the aluminum alloy plate. After the stamping is completed, the press 12 lifts the upper die 14. The stripper plate 4 moves again to the other end of the support frame 21, pushes out the stamped workpiece from the lower die 13, and repeats the above steps to clean the lower die 13 and apply the stamping oil, so that the device stamps the next workpiece.

[0060] 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 principle 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, comprising a main body and a press machine arranged on the main body, wherein a lower die is installed on the main body, and an upper die is installed on the press machine, and the press machine is used to push the upper die and the lower die to close the die to stamp an aluminum alloy plate, characterized in that: The main body is provided with a discharge mechanism, a cleaning component and an oiling component, the discharge mechanism comprises a support frame, a conversion component and a discharge plate, the two support frames are respectively arranged on both sides of the lower die, the conversion component is arranged at both ends of the support frame, the discharge plate is installed between the two support frames, the discharge plate can perform reciprocating linear motion on the support frame, a conversion shaft is installed on the discharge plate, a vertical fixed frame and a horizontal fixed frame are arranged on the conversion shaft, the cleaning component comprises a cleaning brush roller, the cleaning brush roller is installed on the vertical fixed frame, when the discharge plate pushes the workpiece out of the lower die, the cleaning brush roller cleans aluminum chips on the lower die, the oiling component comprises an oiling roller and an oiling nozzle, the oiling roller and the oiling nozzle are sequentially installed on the horizontal fixed frame, when the discharge plate moves to the end of the support frame, the conversion component drives the conversion shaft to rotate, thereby exchanging the positions of the cleaning brush roller and the oiling roller, so that when the discharge plate returns, the oiling roller applies stamping oil on the cleaned lower die.

2. A punching device according to claim 1, characterized in that: The support frame is fixedly connected to the main body, and a slide rail is fixedly installed on the two support frames, and the slide rail is located at the upper end of the lower mold. A slide groove is provided on the two support frames, and the slide groove is located directly above the slide rail. A limit strip is fixedly connected to the top of the slide groove, and the limit strip protrudes downward from the top of the slide groove. Locking grooves are provided at both ends of the top of the support frame, and the bottom of the locking groove is connected to the slide groove. The limit strip is disconnected under the locking groove to form a gap between the two ends of the locking groove.

3. A punching device according to claim 1, characterized in that: The conversion assembly includes a locking plate, which is slidably installed in the locking groove, the upper side of the locking plate is fixedly connected to the lower end of the supporting spring, the upper end of the supporting spring is fixedly connected to the top of the locking groove, and a locking block is fixedly connected to the bottom of the locking plate close to the lower mold, and the supporting spring pushes the locking plate to contact the bottom of the locking groove, so that the locking block is inserted into the slide groove to fill the spaced portion where the limit strip is disconnected, and at this time, the bottom of the locking block is flush with the bottom of the limit strip, and a driving rack is fixedly connected to each of the two support frames.

4. A punching device according to claim 2, characterized in that: The two sides of the unloading plate are slidably installed on the two slide rails through sliders, and the unloading plate is suspended above the lower mold. A pushing groove is provided at one end of the unloading plate facing the lower mold, and the inner diameter of the pushing groove matches the outer diameter of the lower mold. A conversion groove is provided at the other end of the unloading plate, and fixed seats are provided on both sides of the conversion groove. The fixed seats are fixedly connected to the upper side of the unloading plate, and the conversion shaft is rotatably installed on the fixed seat, and both ends of the conversion shaft pass through the fixed seat and are respectively inserted into the two slide grooves.

5. A punching device according to claim 4, characterized in that: The vertical fixing frame and the horizontal fixing frame are both fixedly connected to the outside of the conversion shaft, and the vertical fixing frame and the horizontal fixing frame are vertical. Two limiting openings are opened on the end of the conversion shaft inserted into the slide groove, and the two limiting openings correspond to the vertical fixing frame and the horizontal fixing frame respectively. Both ends of the conversion shaft are fixedly connected with sector gears.

6. A punching device according to claim 1, characterized in that: The press is fixedly mounted on the upper end of the main body, the lower die and the upper die are fixedly connected to the upper side of the main body and the lower side of the press respectively, a collection box is arranged on the main body, the collection box is clamped between the two support frames, a mounting seat is fixedly connected to one side of the main body close to the collection box, and cabinet doors are movably mounted on both sides of the main body.

7. A punching device according to claim 6, characterized in that: The cleaning assembly also includes a driving motor, a dust suction head and a dust suction device, the cleaning brush roller is rotatably mounted on the vertical fixing frame, a plurality of bristles are evenly distributed on the cleaning brush roller, the driving motor is fixedly mounted on the conversion shaft and is located at one end of the cleaning brush roller, the output shaft of the driving motor is coaxially fixedly connected to one end of the cleaning brush roller, the dust suction head is fixedly connected to a side of the vertical fixing frame away from the horizontal fixing frame, the dust suction head corresponds to the cleaning brush roller, the dust suction device is fixedly mounted in a cabinet door on one side of the main body, and the dust suction device is connected to the dust suction head through a collecting pipe.

8. A punching device according to claim 7, characterized in that: The oiling assembly also includes an oil pump and an oil storage tank. The oiling roller is rotatably mounted on the horizontal fixing frame, and the oiling roller is a soft roller made of rubber. Several oil drip nozzles are evenly fixedly connected to the side of the horizontal fixing frame away from the vertical fixing frame. The oil pump and the oil storage tank are sequentially mounted in the cabinet door on the other side of the main body. The oil pump and the oil storage tank are connected by an oil pipe, and the oil pump and several oil drip nozzles are connected by another oil pipe.

9. A punching device according to claim 6, characterized in that: The unloading mechanism also includes a driving cylinder, which is fixedly mounted on the mounting seat, and an output shaft of the driving cylinder is fixedly connected to the unloading plate.

10. A precision stamping method for automobile die forgings, characterized in that: A punching device according to any one of claims 1 to 9 is used; The following steps are involved: S1. During the processing of aluminum alloy precision die forgings, before stamping the aluminum alloy sheet, the unloading plate of the unloading mechanism moves from the initial end of the support frame to the other end of the support frame, and the lower die is cleaned by the cleaning brush roller of the cleaning assembly; S2. After the unloading plate moves to the other end of the support frame, the cleaning brush roller completes the cleaning work, and the conversion shaft rotates forward under the drive of the conversion assembly, the cleaning brush roller is retracted, and the oiling roller is lowered; S3. After the oiling roller is put down, the unloading plate starts to return, and the oiling nozzle of the oiling assembly sprays stamping oil to the cleaned lower die. The moving unloading plate drives the oiling roller to roll on the lower die to evenly spread the stamping oil on the upper die. S4, after the unloading plate returns to the initial end of the support frame, the oiling assembly completes the application of stamping oil, the oil drip nozzle stops spraying stamping oil, and at the same time the conversion assembly drives the conversion shaft to rotate in the opposite direction, retracts the oiling roller, and puts down the cleaning brush roller; S5. Then, the aluminum alloy sheet to be stamped is placed on the lower die, and the press pushes the upper die and the lower die to close the die to stamp the aluminum alloy sheet. After the stamping is completed, the press lifts the upper die, and the unloading plate moves to the other end of the support frame again to push the stamped workpiece out of the lower die, and repeat the above steps, clean the lower die, and apply stamping oil, so that the device can stamp the next workpiece.

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