Punch forming equipment for metal sliding plate and punching method

Abstract

The invention discloses punch forming equipment and a punching method for a metal sliding plate, and relates to the field of punch forming equipment.The punch forming equipment comprises a hydraulic machine, an upper die and a lower die, the upper die is fixedly installed at the output end of the hydraulic machine, a discharging assembly is arranged in the lower die, and the discharging assembly comprises a plurality of push-out units, a driving unit and a switching unit; the push-out unit comprises a plugging block, a plugging switching plate, a push-out pipe and a push-out switching plate, a push-out hole is formed in the position, corresponding to the push-out unit, of the bottom of the die cavity of the lower die, the plugging block is arranged on the plugging switching plate, and the push-out pipe is arranged in the push-out switching plate. After the plate is loosened, the plate is separated from the lower die more easily, damage caused by falling of the plate is prevented, it is guaranteed that the discharging position of the plate is more accurate, the plugging block is matched with the die cavity of the lower die in shape, defects do not exist in the plate forming process, and it is guaranteed that the bottom of the plate is formed more smoothly.

Description

Technical Field

[0001] The present invention relates to the field of stamping equipment, and particularly to a stamping equipment and a stamping method for a metal slide plate. Background Art

[0002] A metal slide plate is a self-lubricating metal sheet formed by adding a lubricating material to a metal substrate. For example, holes are drilled in a sheet based on aluminum alloy or copper, and nano-level graphite cylinders are installed in the holes of the base sheet to make them tightly connected. During operation, when the metal slide plate is worn, its graphite cylinders are also worn, and the worn graphite powder fills the gaps between the sheets to act as a lubricating material.

[0003] Metal slide plates have different shapes in different products, often including plate-shaped and cylindrical shapes, and some different shapes need to be processed by stamping methods.

[0004] Stamping forming refers to a processing and forming method in which an external force is applied to plates, strips, tubes, profiles, etc. by a press and a die, causing them to undergo plastic deformation or separation, so as to obtain workpieces (stamped parts) with the required shapes and sizes.

[0005] Chinese Patent Application CN103341541A discloses a stamping machine, including a first stamping machine and a second stamping machine, and further including a steel belt feeding device, a first discharging device, a workpiece feeding device, a second discharging device, and a conveying device; the steel belt feeding device and the first discharging device are horizontally installed on the first stamping machine and can synchronously and coordinately operate with the first stamping machine; the workpiece feeding device and the second discharging device are horizontally installed on the second stamping machine and can synchronously and coordinately operate with the second stamping machine; the conveying device is arranged between the first discharging device on the first stamping machine and the workpiece feeding device on the second stamping machine. The design structure is ingenious, that is, two stamping machines are interconnected by an automatic transportation device to achieve the purpose of continuously processing workpieces, which not only reduces the labor intensity, but also greatly improves the production efficiency of product processing and effectively reduces the production cost of labor. Chinese Patent CN106694668B discloses a stamping device, including a base, a punch, and a workbench disposed on the base. The workbench is used to place workpieces. A lead screw nut is provided on the base and is located above the workbench. The stamping device further includes a driving assembly. The driving assembly includes a mounting bracket, a lead screw, and a driving member. The mounting bracket is movably installed on the base. The lead screw is rotatably installed on the mounting bracket, passes through the lead screw nut, and is screwed with the lead screw nut. The punch is installed at one end of the lead screw and is located between the lead screw nut and the workbench. The driving member is located on the mounting bracket and is connected to the lead screw to drive the lead screw to rotate around its axis. The lead screw can move relative to the lead screw nut during rotation, so that the punch moves towards the workbench to stamp the workpiece, which can improve the transmission efficiency and accuracy.

[0006] The above patent and the prior art also have the following defects: After the blank is formed in the die by the stamping machine, the formed material is closely attached to the die and is difficult to separate. Some dies use ejector pins to eject, but the ejector pins contact and apply pressure to the formed material, which easily causes defects such as depressions or unevenness in the formed material. At the same time, after the formed material is ejected from the die, due to the unevenness of the formed material, when there are inclined and protruding structures, the formed material is prone to slide on the ejector pins, resulting in inaccurate positions of the formed material, making it difficult for the manipulator or the movable vacuum chuck to accurately grasp the formed material, and the discharging is more difficult and the efficiency is low.

[0007] Therefore, the present application provides a stamping and forming device and a stamping method for a metal skateboard to meet the requirements. Summary of the Invention

[0008] The purpose of the present application is to provide a stamping and forming device and a stamping method for a metal skateboard. After the sheet is formed, air is first injected into the bottom of the lower die. The air separates the sheet from the lower die. After the sheet is loosened, it is easier for the sheet to separate from the lower die. The push-out tube moves upward to push the sheet above the lower die. At the same time, the push-out tube adsorbs the sheet through negative pressure to prevent the sheet from falling and causing damage, ensuring that the discharging position of the sheet is more accurate. When the sheet is being formed, the push-out tube moves outside the push-out hole, and the blocking block moves into the push-out hole. The blocking block is shaped to match the cavity of the lower die, so that there will be no defects during the forming process of the sheet, ensuring that the bottom of the sheet is formed more smoothly.

[0009] To achieve the above object, the present application provides the following technical solution: A stamping and forming device for a metal skateboard, including a hydraulic press, an upper die, and a lower die. The upper die is fixedly installed at the output end of the hydraulic press, and a discharging assembly is arranged inside the lower die; The discharging assembly includes a plurality of pushing units, a driving unit and a switching unit. The pushing unit includes a blocking block, a blocking switching plate, a pushing pipe and a pushing switching plate. A pushing hole is formed at the bottom of the cavity of the lower mold corresponding to the position of the pushing unit. The blocking block is arranged on the blocking switching plate, and the pushing pipe is arranged in the pushing switching plate. The switching unit can drive all the blocking switching plates and the pushing switching plates to rotate, so that the blocking block and the pushing pipe move circumferentially. The driving unit includes a blocking driving plate and a pushing driving plate. The blocking switching plate is rotatably connected to the blocking driving plate, and the blocking driving plate can drive the blocking switching plate to move vertically. The pushing switching plate is rotatably connected to the pushing driving plate, and the pushing driving plate can drive the pushing driving plate to move vertically.

[0010] Preferably, the switching unit includes a switching motor, a rotating shaft and a plurality of driving shafts. A pushing cavity is arranged in the lower mold, and the discharging assembly is arranged in the pushing cavity. The switching motor is fixedly installed on the lower mold, the rotating shaft is fixedly installed at the output end of the switching motor, the rotating shaft is rotatably connected to the lower mold. The cross sections of the plurality of driving shafts are rectangularly arranged, the driving shafts are rotatably connected in the lower mold, the driving shafts penetrate through the blocking driving plate and the pushing driving plate and are in sliding fit, and the rotating shaft can drive all the driving shafts to rotate.

[0011] Preferably, the switching unit further includes a driving gear and a plurality of driven gears. The plurality of driving shafts are arranged at equal circumferential intervals around the rotating shaft. The driving gear is fixedly installed on the rotating shaft, and the plurality of driven gears are fixedly installed on the corresponding driving shafts. The driving gear meshes with the driven gears.

[0012] Preferably, the driving unit further includes two pushing screws, a pushing motor and two pushing blocks. The two pushing blocks are both fixedly installed on the pushing driving plate. The pushing motor is fixedly installed on the lower mold. One end of the pushing screw is rotatably connected to the lower mold, the output end of the pushing motor is fixedly installed on one of the pushing screws, and the pushing block is sleeved on the pushing screw and is in threaded fit with the pushing screw.

[0013] Preferably, the driving unit further includes a blocking cylinder, two belt pulleys and a belt. The two belt pulleys are respectively fixedly installed on the corresponding pushing screws. The belt is sleeved on the two belt pulleys. The blocking cylinder is fixedly installed on the lower mold, and the output end of the blocking cylinder is fixedly installed on the blocking driving plate.

[0014] Preferably, the plugging switching plate is rotatably connected to the plugging driving plate, the pushing switching plate is rotatably connected to the pushing driving plate, the pushing tube is fixedly installed on the pushing switching plate, the pushing tube penetrates through the plugging switching plate and is slidably matched with the plugging switching plate, the plugging block is fixedly installed on the plugging switching plate, a guiding rod is fixedly installed in the lower mold, and the guiding rod penetrates through the pushing driving plate and is slidably matched with the pushing driving plate.

[0015] Preferably, a mold base is fixedly installed at the bottom of the lower mold, a column is fixedly installed on the mold base, the hydraulic press is fixedly installed on the column, the upper mold is slidably matched with the column, a blanking assembly is arranged on one side of the mold base, and the blanking assembly includes a fixed frame, an electric sliding table, a moving rod and two electric suction cups, the moving rod is installed on the electric sliding table, and the two electric suction cups are both installed on the moving rod.

[0016] Preferably, the blanking assembly further includes a blanking table, a transfer table, a lifting motor, a lifting screw rod, a lifting frame and a lifting block, the lifting block is fixedly installed on the fixed frame, the lifting motor is fixedly installed on the lifting frame, the lifting screw rod is rotatably connected to the lifting frame, the lifting screw rod is fixedly installed at the output end of the lifting motor, the lifting block is sleeved on the lifting screw rod and is slidably matched with the lifting screw rod, and the electric sliding table is fixedly installed on the lifting frame.

[0017] Preferably, an air pressure shell is fixedly installed at the bottom of the pushing driving plate, a sealing cylinder is rotatably connected in the air pressure shell, the sealing cylinder is sleeved on the corresponding driving shaft, the sealing cylinder is fixedly installed on the pushing switching plate, a connecting hose is fixedly installed at the bottom of the air pressure shell, an air pump is fixedly installed on the mold base, and the connecting hose is communicated with the air pump.

[0018] A stamping method for a metal sliding plate, using the above stamping and forming equipment, includes the following steps: Place the blank in the lower mold, the hydraulic press drives the upper mold to descend, the upper mold and the lower mold are closed, at this time, the pushing hole in the lower mold is plugged by the plugging block, the plugging block is matched with the mold cavity of the lower mold, the upper mold and the lower mold extrude the blank, and the blank is deformed and formed under the action of the extrusion force; After the blank is formed into a plate, the hydraulic press drives the upper mold to rise; The driving unit drives the plugging block to descend, the plugging block moves out of the pushing hole in the lower mold, and the switching unit drives the plugging block and the pushing tube to move circumferentially, and moves the pushing tube to correspond to the pushing hole; The driving unit drives the pushing tube to enter the pushing hole, and the pushing tube pushes air into the pushing hole, and the air separates the formed plate from the lower mold; The pushing tube continues to rise and abuts against the formed sheet. Then, a negative pressure is formed inside the pushing tube to adsorb the formed sheet, and the formed sheet is driven to move upward, and the formed sheet is moved above the lower mold for discharging.

[0019] In summary, the technical effects and advantages of the present invention are as follows: 1. In the present invention, after the sheet is formed, air is first injected into the bottom of the lower mold. The air separates the sheet from the lower mold. After the sheet is loosened, it is easier for the sheet to separate from the lower mold. The pushing tube moves upward to push the sheet above the lower mold. At the same time, the pushing tube adsorbs the sheet through negative pressure to prevent the sheet from falling and being damaged, ensuring that the discharging position of the sheet is more accurate. 2. In the present invention, when the sheet is being formed, the pushing tube moves outside the pushing hole, and the blocking block moves into the pushing hole. The blocking block matches the shape of the cavity of the lower mold, so that there are no defects in the process of forming the sheet, ensuring that the bottom of the sheet is formed more smoothly. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is one of the three-dimensional structure diagrams of the present invention; Figure 2 It is the second three-dimensional structure diagram of the present invention; Figure 3 For the present invention Figure 2 The enlarged view of part A; Figure 4 It is the structure diagram of the hydraulic press, the upper mold and the lower mold of the present invention; Figure 5 It is the structure diagram of the hydraulic press of the present invention; Figure 6 For the present invention Figure 5 The enlarged view of part B; Figure 7 It is the structure diagram of the upper mold, the blocking block and the pushing tube of the present invention; Figure 8 It is the structure diagram of the upper mold, the blocking cylinder, the pushing motor, the pushing screw and the pushing drive plate of the present invention; Figure 9 It is the structure diagram of the switching motor, the rotating shaft, the driving gear, the driven gear and the driving shaft of the present invention.

[0022] In the figure: 1, hydraulic press; 2, upper die; 3, lower die; 41, pushing unit; 411, blocking block; 412, blocking switching plate; 413, pushing pipe; 414, pushing switching plate; 42, driving unit; 421, blocking driving plate; 422, pushing driving plate; 423, pushing screw; 424, pushing motor; 425, pushing block; 426, blocking cylinder; 427, belt; 43, switching unit; 431, switching motor; 432, rotating shaft; 433, driving shaft; 434, driving gear; 435, driven gear; 5, guiding rod; 6, die holder; 7, blanking assembly; 71, fixing frame; 72, electric slide table; 73, moving rod; 74, electric suction cup; 75, blanking table; 76, transfer table; 77, lifting motor; 78, lifting screw; 79, lifting frame; 70, lifting block; 8, air pressure shell; 9, sealing cylinder; 10, connecting hose; 11, air pump. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0024] Embodiment 1: Refer to Figures 1-9 A stamping and forming device for a metal skateboard as shown, including a hydraulic press 1, an upper die 2 and a lower die 3. The upper die 2 is fixedly installed at the output end of the hydraulic press 1, and a blanking assembly is arranged in the lower die 3; The blanking assembly includes a plurality of pushing units 41, a driving unit 42 and a switching unit 43. The pushing unit 41 includes a blocking block 411, a blocking switching plate 412, a pushing pipe 413 and a pushing switching plate 414. A pushing hole is opened at the bottom of the die cavity of the lower die 3 corresponding to the position of the pushing unit 41. The blocking block 411 is arranged on the blocking switching plate 412, and the pushing pipe 413 is arranged in the pushing switching plate 414. The switching unit 43 can drive all the blocking switching plates 412 and the pushing switching plates 414 to rotate, so that the blocking block 411 and the pushing pipe 413 move circumferentially; The driving unit 42 includes a blocking driving plate 421 and a pushing driving plate 422. The blocking switching plate 412 is rotatably connected to the blocking driving plate 421, and the blocking driving plate 421 can drive the blocking switching plate 412 to move vertically. The pushing switching plate 414 is rotatably connected to the pushing driving plate 422, and the pushing driving plate 422 can drive the pushing driving plate 422 to move vertically.

[0025] Place the embryo material in the lower mold 3. The hydraulic press 1 drives the upper mold 2 to descend, and the upper mold 2 and the lower mold 3 are closed. At this time, the ejection hole in the lower mold 3 is blocked by the blocking block 411. The blocking block 411 cooperates with the cavity of the lower mold 3. The upper mold 2 and the lower mold 3 extrude the embryo material, and the embryo material is deformed and formed under the action of the extrusion force. After the embryo material is formed into a plate, the hydraulic press 1 drives the upper mold 2 to rise, the driving unit 42 drives the blocking block 411 to descend, and the blocking block 411 moves out of the ejection hole in the lower mold 3. The switching unit 43 drives the blocking block 411 and the ejection pipe 413 to move circumferentially, moves the ejection pipe 413 to correspond to the ejection hole, the driving unit 42 drives the ejection pipe 413 to enter the ejection hole, the ejection pipe 413 pushes air into the ejection hole, the air separates the formed plate from the lower mold 3, the ejection pipe 413 continues to rise and abuts against the formed plate, and then a negative pressure is formed in the ejection pipe 413 to adsorb the formed plate and drive the formed plate to move upward, and moves the formed plate to the upper part of the lower mold 3 for discharging.

[0026] After the plate is formed, first inject air into the bottom of the lower mold 3. The air separates the plate from the lower mold 3. After loosening the plate, it is easier for the plate to separate from the lower mold 3. The ejection pipe 413 moves upward to push the plate to the upper part of the lower mold 3. At the same time, the ejection pipe 413 adsorbs the plate through negative pressure to prevent the plate from falling and causing damage, and ensures that the discharging position of the plate is more accurate.

[0027] When the plate is formed, the ejection pipe 413 moves outside the ejection hole, the blocking block 411 moves into the ejection hole, and the blocking block 411 cooperates with the shape of the cavity of the lower mold 3, so that there are no defects in the plate forming process and the bottom of the plate is formed smoother.

[0028] Example 2, referring to Figures 1-9 , which is different from the above embodiment in that the switching unit 43 includes a switching motor 431, a rotating shaft 432 and a plurality of drive shafts 433. An ejection cavity is provided in the lower mold 3, and the discharging assembly is arranged in the ejection cavity. The switching motor 431 is fixedly installed on the lower mold 3, the rotating shaft 432 is fixedly installed at the output end of the switching motor 431, the rotating shaft 432 is rotatably connected to the lower mold 3, the cross sections of the plurality of drive shafts 433 are rectangularly arranged, the drive shafts 433 are rotatably connected in the lower mold 3, the drive shafts 433 penetrate through the blocking drive plate 421 and the ejection drive plate 422 and are slidably matched, and the rotating shaft 432 can drive all the drive shafts 433 to rotate.

[0029] The switching motor 431 drives the rotating shaft 432 to rotate, the rotating shaft 432 drives all the drive shafts 433 to rotate, the drive shafts 433 drive the corresponding blocking switching plates 412 and ejection switching plates 414 to rotate, and the blocking switching plates 412 and ejection switching plates 414 drive the blocking block 411 and the ejection pipe 413 to rotate, and switch the positions of the blocking block 411 and the ejection pipe 413.

[0030] Example 3. Refer to Figures 1-9 , which is different from the above embodiments in that the switching unit 43 further includes a driving gear 434 and a plurality of driven gears 435. The plurality of drive shafts 433 are arranged at equal circumferential intervals around the rotating shaft 432. The driving gear 434 is fixedly installed on the rotating shaft 432, and the plurality of driven gears 435 are fixedly installed on the corresponding drive shafts 433. The driving gear 434 meshes with the driven gears 435.

[0031] The switching motor 431 drives the rotating shaft 432 to rotate. The rotating shaft 432 drives the driving gear 434 to rotate. The driving gear 434 drives all the driven gears 435 to rotate. The driven gears 435 drive the corresponding drive shafts 433 to rotate.

[0032] Example 4. Refer to Figures 1-9 , which is different from the above embodiments in that the driving unit 42 further includes two pushing screws 423, a pushing motor 424 and two pushing blocks 425. The two pushing blocks 425 are both fixedly installed on the pushing drive plate 422. The pushing motor 424 is fixedly installed on the lower die 3. One end of the pushing screw 423 is rotatably connected to the lower die 3. The output end of the pushing motor 424 is fixedly installed on one of the pushing screws 423. The pushing block 425 is sleeved on the pushing screw 423 and is in threaded cooperation with the pushing screw 423.

[0033] The pushing motor 424 drives the pushing screw 423 to rotate. The pushing block 425 moves on the pushing screw 423. The pushing block 425 drives the pushing drive plate 422 to move vertically. The pushing drive plate 422 drives the pushing switching plate 414 to move vertically. The pushing switching plate 414 drives the pushing pipe 413 to move vertically.

[0034] Example 5. Refer to Figures 1-9 , which is different from the above embodiments in that the driving unit 42 further includes a plugging cylinder 426, two belt pulleys and a belt 427. The two belt pulleys are respectively fixedly installed on the corresponding pushing screws 423. The belt 427 is sleeved on the two belt pulleys. The plugging cylinder 426 is fixedly installed on the lower die 3. The output end of the plugging cylinder 426 is fixedly installed on the plugging drive plate 421.

[0035] The pushing motor 424 drives one of the pushing screws 423 to rotate. The pushing screw 423 drives the corresponding belt pulley to rotate. This belt pulley drives the other belt pulley to rotate through the belt. The other belt pulley drives the corresponding pushing screw 423 to rotate, so that the two pushing screws 423 rotate synchronously, driving the pushing block 425 to move.

[0036] The plugging cylinder 426 drives the plugging drive plate 421 to move vertically. The plugging drive plate 421 drives the plugging switching plate 412 to move. The plugging switching plate 412 drives the plugging block 411 to move. When the plugging switching plate 412 moves, the pushing tube 413 slides on the plugging switching plate 412.

[0037] Example 6, refer to Figures 1-9 , which is different from the above embodiment in that the plugging switching plate 412 is rotatably connected to the plugging drive plate 421, the pushing switching plate 414 is rotatably connected to the pushing drive plate 422, the pushing tube 413 is fixedly installed on the pushing switching plate 414, the pushing tube 413 penetrates through the plugging switching plate 412 and is slidably matched with the plugging switching plate 412, the plugging block 411 is fixedly installed on the plugging switching plate 412, a guiding rod 5 is fixedly installed in the lower mold 3, and the guiding rod 5 penetrates through the pushing drive plate 422 and is slidably matched with the pushing drive plate 422.

[0038] The guiding rod 5 makes the movement of the pushing drive plate 422 more stable and not easy to shake.

[0039] Example 7, refer to Figures 1-9 , which is different from the above embodiment in that a mold base 6 is fixedly installed at the bottom of the lower mold 3, a column is fixedly installed on the mold base 6, the hydraulic press 1 is fixedly installed on the column, the upper mold 2 is slidably matched with the column, a blanking assembly 7 is arranged on one side of the mold base 6, and the blanking assembly 7 includes a fixed frame 71, an electric slide table 72, a moving rod 73 and two electric suction cups 74. The moving rod 73 is installed on the electric slide table 72, and the two electric suction cups 74 are both installed on the moving rod 73.

[0040] After the pushing tube 413 pushes the plate out of the lower mold 3, the electric slide table 72 drives the moving rod 73 and the two electric suction cups 74 to move. The electric suction cups 74 adsorb the plate and drive the plate to move out of the lower mold 3 to discharge the plate.

[0041] Example 8, refer to Figures 1-9 , which is different from the above embodiment in that the blanking assembly 7 further includes a blanking table 75, a transfer table 76, a lifting motor 77, a lifting screw 78, a lifting frame 79 and a lifting block 70. The lifting block 70 is fixedly installed on the fixed frame 71, the lifting motor 77 is fixedly installed on the lifting frame 79, the lifting screw 78 is rotatably connected to the lifting frame 79, the lifting screw 78 is fixedly installed at the output end of the lifting motor 77, the lifting block 70 is sleeved on the lifting screw 78 and is slidably matched with the lifting screw 78, and the electric slide table 72 is fixedly installed on the lifting frame 79.

[0042] After the corresponding electric suction cup 74 moves above the plate, the lifting motor 77 drives the lifting screw rod 78 to rotate. The lifting screw rod 78 moves on the lifting block 70, drives the lifting frame 79 to move, and the lifting frame 79 drives the electric slide table 72, the moving rod 73 and the electric suction cup 74 to move downward, so that the electric suction cup 74 abuts against the plate and adsorbs the plate.

[0043] It is more convenient to unload the plate, improving the unloading efficiency.

[0044] The electric suction cup 74 is a prior art and will not be described in detail here.

[0045] Example 9, refer to Figures 1-9 , which is different from the above embodiment in that a pneumatic shell 8 is fixedly installed at the bottom of the pushing drive plate 422. A closing cylinder 9 is rotatably connected in the pneumatic shell 8. The closing cylinder 9 is sleeved on the corresponding drive shaft 433. The closing cylinder 9 is fixedly installed on the pushing switching plate 414. A connecting hose 10 is fixedly installed at the bottom of the pneumatic shell 8. An air pump 11 is fixedly installed on the die base 6. The connecting hose 10 is communicated with the air pump 11.

[0046] The air pump 11 passes the gas into the pneumatic shell 8 through the connecting hose 10, and the gas enters the pushing hole through the pushing pipe 413.

[0047] The connecting hose 10 is also connected with a vacuum pump. The vacuum pump and the air pump 11 are switched through a valve. The vacuum pump evacuates the pneumatic shell 8 to negative pressure through the connecting hose, and the pushing pipe 413 adsorbs the plate through the negative pressure.

[0048] A stamping method for a metal slide plate, using the above stamping and forming equipment, includes the following steps: Place the blank in the lower die 3. The hydraulic press 1 drives the upper die 2 to descend. The upper die 2 and the lower die 3 are closed. At this time, the pushing hole in the lower die 3 is blocked by the blocking block 411. The blocking block 411 cooperates with the die cavity of the lower die 3. The upper die 2 and the lower die 3 extrude the blank, and the blank is deformed and formed under the action of the extrusion force; After the blank is formed into a plate, the hydraulic press 1 drives the upper die 2 to rise; The driving unit 42 drives the blocking block 411 to descend, the blocking block 411 moves out of the pushing hole in the lower die 3, and the switching unit 43 drives the blocking block 411 and the pushing pipe 413 to move circumferentially, moving the pushing pipe 413 to correspond to the pushing hole; The driving unit 42 drives the pushing pipe 413 into the pushing hole, and the pushing pipe 413 pushes air into the pushing hole, and the air separates the formed plate from the lower die 3; The pushing pipe 413 continues to rise and abuts against the formed plate. Then, a negative pressure is formed in the pushing pipe 413 to adsorb the formed plate, and drives the formed plate to move upward, moving the formed plate to the upper part of the lower die 3 for discharging.

[0049] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A stamping forming device for a metal skateboard, comprising a hydraulic press, an upper die and a lower die, characterized in that: The upper mold is fixedly mounted on the output end of the hydraulic press, and a discharge assembly is arranged in the lower mold; The discharging assembly includes a plurality of ejection units, a driving unit and a switching unit. The ejection unit includes a blocking block, a blocking switching plate, an ejection tube and an ejection switching plate. An ejection hole is provided at the bottom of the mold cavity of the lower mold corresponding to the position of the ejection unit. The blocking block is arranged on the blocking switching plate, and the ejection tube is arranged in the ejection switching plate. The switching unit can drive all the blocking switching plates and the ejection switching plates to rotate, so that the blocking block and the ejection tube move in a circle. The driving unit includes a blocking driving plate and an ejecting driving plate, the blocking switching plate is rotatably connected to the blocking driving plate, the blocking driving plate can drive the blocking switching plate to move vertically, the ejecting switching plate is rotatably connected to the ejecting driving plate, the ejecting driving plate can drive the ejecting driving plate to move vertically.

2. The stamping forming equipment for metal skateboard according to claim 1, characterized in that: The switching unit includes a switching motor, a rotating shaft and a plurality of driving shafts. An ejection cavity is provided in the lower mold, and the discharging assembly is provided in the ejection cavity. The switching motor is fixedly mounted on the lower mold, and the rotating shaft is fixedly mounted on the output end of the switching motor. The rotating shaft is rotatably connected to the lower mold. The cross-sections of the plurality of driving shafts are rectangular, and the driving shaft is rotatably connected in the lower mold. The driving shaft passes through the blocking driving plate and the ejection driving plate and slides together, and the rotating shaft can drive all the driving shafts to rotate.

3. The stamping forming equipment for metal skateboard according to claim 2, characterized in that: The switching unit also includes a driving gear and a plurality of passive gears. The plurality of driving shafts are equidistantly arranged around the rotating shaft. The driving gear is fixedly mounted on the rotating shaft. The plurality of passive gears are fixedly mounted on the corresponding driving shafts. The driving gear meshes with the passive gears.

4. The stamping forming equipment for metal skateboard according to claim 1, characterized in that: The driving unit also includes two ejection screws, an ejection motor and two ejection blocks. The two ejection blocks are fixedly mounted on the ejection driving plate. The ejection motor is fixedly mounted on the lower mold. One end of the ejection screw is rotatably connected to the lower mold. The output end of the ejection motor is fixedly mounted on one of the ejection screws. The ejection block is sleeved on the ejection screw and cooperates with the thread of the ejection screw.

5. The stamping forming equipment for metal skateboard according to claim 4, characterized in that: The driving unit also includes a sealing cylinder, two pulleys and a belt. The two pulleys are respectively fixedly mounted on the corresponding ejection screws. The belt is sleeved on the two pulleys. The sealing cylinder is fixedly mounted on the lower mold. The output end of the sealing cylinder is fixedly mounted on the sealing drive plate.

6. The stamping forming equipment for metal skateboard according to claim 1, characterized in that: The blocking switching plate is rotatably connected to the blocking driving plate, the pushing-out switching plate is rotatably connected to the pushing-out driving plate, the pushing-out tube is fixedly mounted on the pushing-out switching plate, the pushing-out tube passes through the blocking switching plate and slidably cooperates with the blocking switching plate, the blocking block is fixedly mounted on the blocking switching plate, a guide rod is fixedly mounted in the lower mold, the guide rod passes through the pushing-out driving plate and slidably cooperates with the pushing-out driving plate.

7. The stamping forming equipment for metal skateboard according to claim 1, characterized in that: A mold base is fixedly installed at the bottom of the lower mold, a column is fixedly installed on the mold base, the hydraulic press is fixedly installed on the column, the upper mold is slidably fitted on the column, and a blanking assembly is provided on one side of the mold base. The blanking assembly includes a fixed frame, an electric slide, a moving rod and two electric suction cups. The moving rod is installed on the electric slide, and the two electric suction cups are both installed on the moving rod.

8. The stamping forming equipment for metal skateboard according to claim 7, characterized in that: The unloading assembly also includes an unloading table, a transfer table, a lifting motor, a lifting screw, a lifting frame and a lifting block. The lifting block is fixedly mounted on the fixed frame, the lifting motor is fixedly mounted on the lifting frame, the lifting screw is rotatably connected to the lifting frame, the lifting screw is fixedly mounted on the output end of the lifting motor, the lifting block is sleeved on the lifting screw and slidably cooperates with the lifting screw, and the electric slide is fixedly mounted on the lifting frame.

9. The stamping forming equipment for metal skateboard according to claim 7, characterized in that: A pneumatic shell is fixedly installed at the bottom of the ejection drive plate, a closed cylinder is rotatably connected inside the pneumatic shell, the closed cylinder is sleeved on the corresponding drive shaft, the closed cylinder is fixedly installed on the ejection switching plate, a connecting hose is fixedly installed at the bottom of the pneumatic shell, an air pump is fixedly installed on the mold base, and the connecting hose is connected to the air pump.

10. A stamping method for a metal skateboard, using the stamping forming device for a metal skateboard as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: The blank is placed in the lower mold, and the hydraulic press drives the upper mold to descend, and the upper mold is closed with the lower mold. At this time, the ejection hole in the lower mold is blocked by a blocking block, and the blocking block cooperates with the mold cavity of the lower mold. The upper mold and the lower mold squeeze the blank, and the blank is deformed under the action of the extrusion force; After the blank is formed into a plate, the hydraulic press drives the upper mold to rise; The driving unit drives the blocking block to descend, and the blocking block is moved out of the ejection hole in the lower mold. The switching unit drives the blocking block and the ejection tube to move in a circular motion, and moves the ejection tube to correspond to the ejection hole. The driving unit drives the ejection tube to enter the ejection hole, and the ejection tube pushes air into the ejection hole, and the air causes the formed sheet to separate from the lower mold; The ejection tube continues to rise and contacts the formed sheet, and then negative pressure is formed in the ejection tube to absorb the formed sheet and drive the formed sheet to move upward, moving the formed sheet to the top of the lower mold for discharge.

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