Stamping device and engineering van light barrier produced by same

Abstract

The invention discloses a stamping device and an engineering van light barrier produced by the stamping device, and relates to the field of light barrier production, the stamping device comprises a base, a stamping mechanism and a transferring mechanism are arranged on the base, a feeding station, a first stamping station, a second stamping station, a third stamping station and a discharging station are formed on the base at intervals, and when the stamping mechanism moves upwards, the first stamping station and the second stamping station are separated from each other. When the stamping mechanism moves downwards, the transferring mechanism grabs the four metal connecting pieces on the feeding station, the first stamping station, the second stamping station and the third stamping station, and when the stamping mechanism moves downwards, the transferring mechanism places the four metal connecting pieces on the first stamping station, the second stamping station, the third stamping station and the discharging station. According to the automatic stamping device, the multiple stamping stations are integrated on one base, and after the stamping mechanism completes stamping every time, the transferring mechanism can grab the machined metal connecting pieces at the previous station and place the machined metal connecting pieces on the next station, so that continuous and automatic stamping machining of the metal connecting pieces can be achieved, and the production efficiency of the metal connecting pieces is improved.

Description

Technical Field

[0001] The present application relates to the field of light shield production, and in particular to a stamping device and a light shield for engineering vehicles produced therefrom. Background Art

[0002] The car sunshade is an important part of the car interior. It is located in front of the driver and co-driver's heads. Its main function is to effectively block direct light by adjusting the angle of the sunshade when the sunlight is strong, reduce the glare interference to the driver's vision, and improve driving safety and comfort.

[0003] Currently, refer to Figure 1 The metal connecting piece 28 is one of the components of the light shield for engineering vehicles. Four through holes 24 are formed at the four corners of the metal connecting piece 28. A first protrusion 25 is formed in the middle of the metal connecting piece 28 along its width direction. A second protrusion 26 is formed in the middle of the metal connecting piece 28 along its length direction.

[0004] When producing metal connecting pieces, the staff needs to first place the metal connecting pieces into the first set of dies to stamp out four through holes, then place the metal connecting pieces into the second set of dies to stamp out the first protrusion, and finally place the metal connecting pieces into the third set of dies to stamp out the second protrusion. The staff needs to take and place the metal connecting pieces before and after each stamping, which reduces the production efficiency of the metal connecting pieces. Summary of the Invention

[0005] In order to improve the production efficiency of metal connecting sheets, the present application provides a stamping device and a light shield for an engineering vehicle produced therefrom.

[0006] In the first aspect, the present application provides a stamping device that adopts the following technical solution: A stamping device comprises a base, a stamping mechanism is provided on the base, and a feed conveyor belt and a discharging conveyor belt are provided on both sides of the base, and a feed station, a first stamping station, a second stamping station, a third stamping station and a discharging station are formed on the base in sequence from the feed conveyor belt to the discharging conveyor belt, the feed station is located on the feed conveyor belt, the first stamping station is used for stamping through holes, the second stamping station is used for stamping first protrusions, and the third stamping station is used for stamping second protrusions, and the discharging station is located on the discharging conveyor belt, and a transfer mechanism is provided on the base. When the stamping mechanism completes stamping and moves upward, the transfer mechanism moves to grab four metal connecting pieces on the feed station, the first stamping station, the second stamping station and the third stamping station. When the stamping mechanism moves downward for stamping, the transfer mechanism transports the four metal connecting pieces and places them on the first stamping station, the second stamping station, the third stamping station and the discharging station.

[0007] By adopting the above technical solution, the feed conveyor belt conveys the metal connecting piece to the feed station, when the stamping mechanism moves upward, the transfer mechanism grabs the metal connecting piece at the feed station, when the stamping mechanism moves downward, the transfer mechanism places the metal connecting piece at the first stamping station, the stamping mechanism punches four through holes on the metal connecting piece in the first stamping station, when the stamping mechanism moves upward and downward again, the transfer mechanism grabs the metal connecting piece at the first station and places it at the second stamping station, after the stamping mechanism moves upward and downward multiple times, the metal connecting piece is stamped and placed on the discharge conveyor belt, which drives the metal connecting piece to be discharged. In this arrangement, multiple stamping stations are assembled on a base, and after each stamping is completed by the stamping mechanism, the transfer mechanism grabs the metal connecting piece at the previous station and places it on the next station, thereby realizing continuous automatic stamping processing of the metal connecting piece and improving the production efficiency of the metal connecting piece.

[0008] Preferably, the transfer mechanism includes a first transmission part, four transfer parts, a second transmission part and a grabbing part. The four transfer parts are rotatably arranged on the base and are located between the five workstations. The first transmission part is arranged on the base and is transmission-connected to the stamping mechanism and the transfer part. When the stamping mechanism moves upward, the first transmission part drives the transfer part to rotate toward the direction of the feed conveyor belt. When the stamping mechanism moves downward, the first transmission part drives the transfer part to rotate toward the direction of the discharge conveyor belt. The grabbing part is rotatably arranged on the transfer part. The second transmission part is arranged in the transfer part and is transmission-connected to the transfer part and the grabbing part. When the transfer part rotates toward the direction of the feed conveyor belt, the second transmission part drives the grabbing part to rotate toward the direction of the feed conveyor belt, and the grabbing part grabs the metal connecting piece. When the transfer part rotates toward the direction of the discharge conveyor belt, the second transmission part drives the grabbing part to rotate toward the direction of the discharge conveyor belt, and the grabbing part places the metal connecting piece.

[0009] By adopting the above technical solution, when the stamping mechanism moves upward, the first transmission part drives the transfer part to rotate toward the feed conveyor belt, the second transmission part drives the grabbing part to rotate toward the feed conveyor belt, and the grabbing part grabs the metal connecting piece; when the stamping mechanism moves downward, the first transmission part drives the transfer part to rotate toward the discharge conveyor belt, the second transmission part drives the grabbing part to rotate toward the discharge conveyor belt, and the grabbing part places the metal connecting piece, so that after the stamping mechanism completes one stamping, the metal connecting piece at the previous workstation can be automatically grabbed and placed on the next workstation.

[0010] Preferably, the first transmission part includes a first rack, a first gear, a second rack, four second gears, a synchronization shaft, a first synchronization wheel and a synchronization belt, the first rack is fixedly arranged at the lifting end of the stamping mechanism, the first rack is rotatably arranged in the base and meshes with the first rack, and the upper and lower ends of the first rack are provided with empty grooves for disengaging from the first gear, the second rack is slidably arranged in the base in the horizontal direction and meshes with the first gear, and multiple second gears are rotated at intervals in the base and mesh with the second rack, the synchronization shaft is fixedly arranged on the second gear, the first synchronization wheel is fixedly arranged on the synchronization shaft, and the synchronization belt is sleeved on the first synchronization wheel and the transfer part.

[0011] By adopting the above technical solution, when the stamping mechanism moves up and down, the stamping mechanism drives the first rack to move up and down, the first rack drives the second rack to move back and forth horizontally through the first gear, the second rack drives the four first synchronous wheels to rotate through the four second gears and the synchronous shaft, and the first synchronous wheel then drives the transfer part to rotate back and forth through the synchronous belt.

[0012] Preferably, the transfer part includes a fixed shaft, a second synchronous wheel, a transfer column and a pendulum block, the fixed shaft is fixedly set in the base, the second synchronous wheel is rotatably set on the fixed shaft, the synchronous belt is sleeved on the second synchronous wheel, the transfer column is fixedly set at the top end of the second synchronous wheel, the grabbing part is rotatably set at the top end of the transfer column, and the pendulum block is fixedly set at the bottom end of the second synchronous wheel.

[0013] By adopting the above technical solution, the synchronous belt drives the second synchronous wheel to rotate on the fixed shaft, and the second synchronous wheel drives the grabbing part to move through the transfer column. When the first rack drives the empty slot to rise or fall to the first gear, the first gear is disengaged from the first gear. Under the action of the pendulum block, the second synchronous wheel drives the transfer column to rotate and reset to a vertical state.

[0014] Preferably, the second transmission part includes a bevel gear ring, a bevel gear and a rotating shaft, the bevel gear ring is fixedly set on the fixed shaft, the rotating shaft is rotatably set in the transfer column, the top end of the rotating shaft is fixedly connected to the grabbing part, the bevel gear is fixedly set at the bottom end of the rotating shaft, and the bevel gear is meshed with the bevel gear.

[0015] By adopting the above technical solution, when the second synchronous wheel drives the transfer column to rotate, the transfer column drives the rotating shaft to move, and the rotating shaft drives the bevel gear to move on the bevel gear ring. During the movement of the bevel gear, the rotating shaft drives the grabbing part to rotate, so that the grabbing part can also rotate while the transfer column rotates.

[0016] Preferably, the grabbing part includes a grabbing block, a grabbing plate and a plurality of suction nozzles, the grabbing block is rotatably set on the top of the transfer column and fixedly connected to the top of the rotating shaft, the grabbing plate is fixedly set at the end of the grabbing block, and the plurality of suction nozzles are set on the grabbing plate and are used to adsorb or release the metal connecting piece.

[0017] By adopting the above technical solution, the rotating shaft drives the grabbing block to rotate, and the grabbing block drives multiple suction nozzles to rotate through the grabbing plate. The suction nozzles can grab the metal connecting piece by sucking air, and can place the metal connecting piece by blowing air.

[0018] Preferably, a cavity is provided in the second synchronous wheel, a buffer is stored in the cavity of the second synchronous wheel, and a first buffer plate is fixedly provided at the bottom of the cavity of the second synchronous wheel.

[0019] By adopting the above technical solution, when the second synchronous wheel rotates, it will drive the first buffer plate to rotate. When the pendulum block drives the second synchronous wheel to rotate and reset, the second synchronous wheel drives the first buffer plate to rotate. Under the action of the buffer, the second synchronous wheel slowly rotates and resets, so that the second synchronous wheel is not likely to swing after rotating and resetting.

[0020] Preferably, four limit columns are slidably arranged in the second stamping station and the third stamping station in the base, and a sliding groove is provided on the base for the limit column to slide in the horizontal direction. The limit column is located in the sliding groove, and the limit column passes through the through hole of the metal connecting piece and is used to limit the placement position of the metal connecting piece. A sliding cavity is provided in the base, and the base is slidably arranged in the sliding seat in the sliding cavity, and the limit column is lifted and slid in the sliding seat, and a first elastic member abutting the bottom end of the limit column is provided in the sliding seat, and a second elastic member abutting the side wall of the sliding seat is provided in the sliding cavity, and a slider is provided on the side wall of the limit column, and a sliding groove connected to the top of the sliding cavity is provided in the base, and the slider is slidably arranged in the sliding groove.

[0021] By adopting the above technical solution, when the metal connecting piece is placed on the second stamping station and the second stamping station, the four limiting posts pass through the four through holes of the metal connecting piece, thereby limiting the placement position of the metal connecting piece. When the stamping mechanism stamps the metal connecting piece, the stamping mechanism first drives the limiting posts to move downward, and the limiting posts drive the slider to move in the slide groove and squeeze the first elastic member. When the slider moves from the slide groove to the sliding cavity, the stamping mechanism starts to stamp the metal connecting piece. At this time, the metal connecting piece will drive the sliding seat to slide in the sliding cavity through the limiting posts and squeeze the second elastic member. When the stamping mechanism moves upward, the first elastic member pushes the limiting posts to rise and reset. When the metal connecting piece is grabbed by the transfer mechanism, the second elastic member pushes the sliding seat to move and reset.

[0022] In the second aspect, the present application provides a light barrier for an engineering vehicle using the following technical solution: A light shield for an engineering vehicle comprises a plurality of metal connecting plates punched by a stamping device, and also comprises a rotating connecting shaft and a light shield body. Every two of the metal connecting plates are fixedly connected by bolts and nuts, and every two of the metal connecting plates clamp the rotating connecting shaft by a first protrusion, and the plurality of metal connecting plates clamp and fix the light shield body.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. The transfer mechanism is used to gather multiple stamping stations on a base. After each stamping is completed, the transfer mechanism will grab the metal connecting piece processed at the previous station and place it on the next station, thereby realizing continuous automatic stamping of metal connecting pieces and improving the production efficiency of metal connecting pieces. 2. With the help of the first buffer plate, when the pendulum block drives the second synchronous wheel to rotate and reset, the second synchronous wheel drives the first buffer plate to rotate. Under the action of the buffer, the second synchronous wheel slowly rotates and resets, so that the second synchronous wheel is not likely to swing after rotating and resetting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the metal connecting piece in the background technology of this application; Figure 2 This is a schematic diagram of the overall structure of the stamping device of this application; Figure 3 This is a schematic diagram of the overall structure of the stamping device of this application, in order to highlight the stamping mechanism; Figure 4 A partial structural cross-sectional view of the punching device of this application; Figure 5 For this application Figure 4 A in the middle is an enlarged schematic diagram; Figure 6 This is a partial structural diagram of the stamping device of the present application, highlighting the transfer part; Figure 7 This is a partial structural cross-sectional view of the punching device of the present application, highlighting the second transmission part; Figure 8 For this application Figure 2 The enlarged schematic diagram of point B in the middle; Figure 9 This is a partial structural cross-sectional view of the punching device of this application, highlighting the limit column; Figure 10 This is a schematic diagram of the overall structure of the light barrier for engineering vehicles in this application.

[0025] Figure numerals: 1, base; 2, feed conveyor belt; 3, discharge conveyor belt; 4, stamping mechanism; 41, stamping plate; 42, driving member; 43, top plate; 44, guide column; 5, transfer mechanism; 51, first transmission part; 511, first rack; 512, first gear; 513, second rack; 514, second gear; 515, synchronization shaft; 516, first synchronization wheel; 517, synchronization belt; 52, transfer part; 521, fixed shaft; 522, second synchronization wheel; 523, transfer column; 524, pendulum block; 53, second transmission part; 531, bevel gear ring; 532, bevel gear; 533, rotating shaft; 54 , grabbing part; 541, grabbing block; 542, grabbing plate; 543, suction nozzle; 6, feeding station; 7, first stamping station; 8, second stamping station; 9, third stamping station; 10, discharging station; 11, empty slot; 12, cavity; 13, first buffer plate; 14, limiting column; 15, sliding slot; 16, sliding cavity; 17, sliding seat; 18, first elastic member; 19, second elastic member; 20, slider; 21, slide slot; 22, rotating connecting shaft; 23, light shielding plate; 24, through hole; 25, first protrusion; 26, second protrusion; 27, second buffer plate; 28, metal connecting piece; 31, avoidance groove. DETAILED DESCRIPTION

[0026] The following is combined with Figure 2-Figure 10 This application is described in further detail.

[0027] Example 1: The embodiment of the present application discloses a stamping device.

[0028] Reference Figure 2 and Figure 3 A stamping device includes a base 1, with a feed conveyor belt 2 and a discharge conveyor belt 3 mounted on both ends of the base 1 in the horizontal direction. A first stamping station 7, a second stamping station 8, and a third stamping station 9 are formed on the base 1 at equal intervals from the feed conveyor belt 2 to the discharge conveyor belt 3. A feed station 6 is formed on the end of the feed conveyor belt 2 near the first stamping station 7, and a discharge station 10 is formed on the end of the discharge conveyor belt 3 near the third stamping station 9.

[0029] A stamping mechanism 4 is installed on the base 1 above the first stamping station 7, the second stamping station 8 and the third stamping station 9. The stamping mechanism 4 includes a stamping plate 41, a top plate 43, three driving members 42 and four guide columns 44. The four guide columns 44 are fixedly mounted on the base 1, the top plate 43 is fixedly mounted on the top ends of the four guide columns 44, and the stamping plate 41 is slidably mounted on the four guide columns 44. The three driving members 42 are fixedly mounted on the top plate 43, and the stamping plate 41 is fixedly connected to the driving ends at the bottom of the three driving members 42. In the present application, the driving member 42 can be selected as a hydraulic cylinder. The driving member 42 drives the stamping plate 41 to move up and down, and the stamping plate 41 moves downward to stamp the metal connecting pieces 28 on the first stamping station 7, the second stamping station 8 and the third stamping station 9.

[0030] The first punching station 7 can punch out four through holes 24 of the metal connecting piece 28 , the second punching station 8 can punch out the first protrusion 25 of the metal connecting piece 28 , and the third punching station 9 can punch out the second protrusion 26 of the metal connecting piece 28 .

[0031] Reference Figure 2 and Figure 4 A transfer mechanism 5 is installed in the base 1. The transfer mechanism 5 includes a first transmission part 51, four transfer parts 52, a second transmission part 53 and a grabbing part 54. The transfer part 52 is rotatably installed in the base 1. The four transfer parts 52 are sequentially arranged between the five workstations. The first transmission part 51 is installed in the base 1. The first transmission part 51 is connected to the stamping plate 41 and the four transfer parts 52. The grabbing part 54 is rotatably installed at the top of the transfer part 52. The second transmission part 53 is installed in the transfer part 52. The second transmission part 53 is connected to the transfer part 52 and the grabbing part 54. The stamping plate 41 is provided with a plurality of avoidance grooves 31 for avoiding the transfer part 52 and the grabbing part 54.

[0032] When the stamping plate 41 moves upward, the first transmission part 51 drives the four transfer parts 52 to rotate toward the feed conveyor belt 2, and the four second transmission parts 53 drive the four grabbing parts 54 to rotate toward the feed conveyor belt 2. The four grabbing parts 54 grab the four metal connecting pieces 28 on the feed station 6, the first stamping station 7, the second stamping station 8, and the third stamping station 9, respectively. Then the transfer part 52 drives the grabbing parts 54 to rotate and reset. When the stamping plate 41 moves downward, the four first transmission parts 51 drive the four transfer parts 52 to rotate toward the discharge conveyor belt 3, and the four second transmission parts 53 drive the four grabbing parts 54 to rotate toward the discharge conveyor belt 3. The four grabbing parts 54 place the four metal connecting pieces 28 on the first stamping station 7, the second stamping station 8, the third stamping station 9, and the discharge station 10. Then the transfer part 52 drives the grabbing parts 54 to rotate and reset. In this way, multiple stamping stations are gathered on a base 1. After the stamping mechanism 4 completes stamping each time, the transfer mechanism 5 will grab the metal connecting piece 28 at the previous station and place it on the next station, thereby realizing continuous automatic stamping processing of the metal connecting piece 28 and improving the production efficiency of the metal connecting piece 28.

[0033] Reference Figure 2 、 Figure 4 and Figure 5 The first transmission part 51 includes two first racks 511, a first gear 512, a second rack 513, four synchronization shafts 515, a first synchronization wheel 516, eight second gears 514 and a synchronization belt 517. The two first racks 511 are fixedly mounted on both ends of the stamping plate 41 close to the feed conveyor belt 2. The first rack 511 is installed in the vertical direction. The bottom end of the first rack 511 is slidably mounted in the base 1, and empty slots 11 are provided at the upper and lower ends of the first rack 511.

[0034] The two first gears 512 are rotatably mounted within the base 1 and mesh with the first rack 511. When the first rack 511 drives the empty slot 11 to move to the first gear 512, the first gear 512 disengages from the first rack 511. The two second racks 513 are both slidably mounted horizontally within the base 1 and mesh with the two first gears 512, respectively.

[0035] The eight second gears 514 are rotatably mounted within the base 1, with each of the four second gears 514 meshing with a second rack 513. The ends of each synchronization shaft 515 are fixedly connected to the two second gears 514 at the same position on each of the two second racks 513. Four first synchronization wheels 516 are fixedly mounted on the four synchronization shafts 515, and eight synchronization belts 517 are sleeved on the four first synchronization wheels 516.

[0036] When the stamping plate 41 moves up and down, the stamping plate 41 drives the two first gears 512 to rotate through the two first racks 511, the two first gears 512 drive the eight second gears 514 to rotate through the two second racks 513, and the eight second gears 514 drive the four first synchronous wheels 516 to rotate through the four synchronous shafts 515.

[0037] Reference Figure 5 and Figure 6 The transfer unit 52 includes a fixed shaft 521, a second synchronous pulley 522, a transfer column 523, and a pendulum block 524. Both ends of the four fixed shafts 521 are fixedly mounted to the base 1 via connecting plates. The four second synchronous pulleys 522 are rotatably mounted on the four fixed shafts 521 and positioned directly above the four first synchronous pulleys 516. Eight synchronous belts 517 are mounted on the four second synchronous pulleys 522. The transfer column 523 is fixedly mounted on the top of the second synchronous pulleys 522 and positioned between the two synchronous belts 517. The gripping unit 54 is mounted on the top of the transfer column 523. The pendulum block 524 is fixedly mounted on the bottom of the second synchronous pulley 522 and positioned between the two synchronous belts 517. The weight of the pendulum block 524 is much greater than that of the transfer column 523.

[0038] Reference Figure 6 and Figure 7 A sealed circular cavity 12 is provided in the second synchronous wheel 522, and a buffer is stored in the cavity 12. The second synchronous wheel 522 is located at the bottom of the cavity 12 and a first buffer plate 13 is fixedly installed. Second buffer plates 27 are fixedly installed on both sides of the fixed shaft 521 and located in the cavity 12, and one first buffer plate 13 and two second buffer plates 27 are arranged at equal intervals along the circumference of the second synchronous wheel 522.

[0039] The second transmission part 53 includes a bevel gear ring 531, a bevel gear 532 and a rotating shaft 533. The bevel gear ring 531 is fixedly mounted on the fixed shaft 521 and is located in the cavity 12 of the second synchronous wheel 522. The rotating shaft 533 is coaxially mounted in the transfer column 523. The bottom end of the rotating shaft 533 extends into the cavity 12. The bevel gear 532 is fixedly mounted on the bottom end of the rotating shaft 533 and meshes with the bevel gear ring 531.

[0040] The grabbing portion 54 includes a grabbing block 541, a grabbing plate 542, and four suction nozzles 543. The grabbing block 541 is rotatably mounted on top of the transfer column 523 and is perpendicular to the transfer column 523. The end of the grabbing block 541 is fixedly connected to the top of the rotating shaft 533. The grabbing plate 542 is fixedly mounted on the end of the grabbing block 541 away from the transfer column 523. The four suction nozzles 543 are mounted on the side of the grabbing plate 542 away from the grabbing block 541, and the suction nozzles 543 are connected to the suction device.

[0041] Reference Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As the punch plate 41 ascends, it drives the transfer column 523 toward the feed conveyor belt 2 via the first rack 511, first gear 512, second rack 513, second gear 514, synchronous shaft 515, first synchronous wheel 516, synchronous belt 517, and second synchronous wheel 522. The transfer column 523 drives the gripping portion 54 to move, which in turn drives the rotating shaft 533 to move. During the movement of the rotating shaft 533, the bevel gear ring 531 drives the gripping block 541 to rotate via the bevel gear 532 and rotating shaft 533. The gripping block 541, via the gripping plate 542, drives the four suction nozzles 543 toward the feed conveyor belt 2. When the transfer column 523 rotates 90°, the gripping block 541 rotates 90°, and the four suction nozzles 543 come into contact with the metal connecting piece 28. The suction device then draws air through the suction nozzles 543, allowing the metal connecting piece 28 to be gripped. When the first rack 511 drives the empty slot 11 at its bottom to move to the first gear 512, the first gear 512 disengages from the first rack 511. The pendulum block 524 drives the second synchronous wheel 522 to cause the transfer column 523 to rotate in the opposite direction and return to a vertical position. During the transfer column 523's reset, the second synchronous wheel 522 drives the first buffer plate 13 to rotate. Under the action of the buffer and the second buffer plate 27, the second synchronous wheel 522 slowly rotates to reset, thereby preventing the transfer column 523 from swinging after its reset.

[0042] As the punch plate 41 descends, it drives the transfer column 523, via the first rack 511, first gear 512, second rack 513, second gear 514, synchronous shaft 515, first synchronous pulley 516, synchronous belt 517, and second synchronous pulley 522, to rotate toward the discharge conveyor belt 3. The transfer column 523 drives the gripping portion 54 to move, which in turn drives the rotating shaft 533 to move. During the movement of the rotating shaft 533, the bevel gear ring 531 drives the gripping block 541 to rotate via the bevel gear 532 and rotating shaft 533. The gripping block 541, via the gripping plate 542, drives the four suction nozzles 543 to rotate toward the discharge conveyor belt 3. When the transfer column 523 rotates 90°, the gripping block 541 also rotates 90°, and the four suction nozzles 543 transport the metal connecting piece 28 to the next workstation. A suction device blows air through the suction nozzles 543, placing the metal connecting piece 28 on this workstation. When the first rack 511 drives the empty slot 11 on its top to move to the first gear 512, the first gear 512 is disengaged from the first rack 511, and the pendulum block 524 drives the transfer column 523 to rotate in the opposite direction and return to the vertical state by driving the second synchronous wheel 522.

[0043] Reference Figure 2 、 Figure 8 and Figure 9 The base 1 is provided with four sliding grooves 15 at the second stamping station 8 and the third stamping station 9. The sliding groove 15 at the second stamping station 8 is opened along the length direction of the metal connecting piece 28, and the sliding groove 15 at the third stamping station 9 is opened along the width direction of the metal connecting piece 28. The base 1 is slidably installed with a limiting column 14 in each sliding groove 15.

[0044] A sliding cavity 16 is provided at the bottom of each sliding groove 15 in the base 1, and a sliding seat 17 is slidably installed in the sliding cavity 16 along the direction of the sliding groove 15. The limit column 14 is slidably installed in the sliding seat 17 along the vertical direction, and sliders 20 are fixedly installed on opposite sides of the limit column 14 in the diameter direction. A sliding groove 21 is provided in the base 1 and the sliding seat 17, and the slider 20 is slidably installed in the sliding groove 21 along the vertical direction.

[0045] A second elastic member 19 is mounted within the sliding cavity 16, with its ends abutting the sidewalls of the sliding seat 17 and the inner wall of the sliding cavity 16, respectively. A first elastic member 18 is mounted within the sliding seat 17, with its ends abutting the bottom end of the limiting post 14 and the inner bottom wall of the sliding seat 17, respectively. In the present application, both the first elastic member 18 and the second elastic member 19 may be springs.

[0046] When the metal connecting piece 28 is placed on the second stamping station 8 or the third stamping station 9, the four limiting columns 14 are inserted into the four through holes 24 of the metal connecting piece 28. At this time, under the action of the slider 20 and the slide groove 21, the limiting columns 14 can only slide in the vertical direction, thereby limiting the placement position of the metal connecting piece 28.

[0047] When the punching plate 41 moves downward, the punching plate 41 drives the limiting post 14 downward, and the limiting post 14 drives the slider 20 from the slide groove 21 into the sliding cavity 16 and disengages the slider 20 from the slide groove 21. During the stamping process of the metal connecting piece 28 in the second punching station 8 and the third punching station 9, the length and width of the metal connecting piece 28 will decrease. At this time, the limiting post 14 slides in the sliding groove 15 and drives the sliding seat 17 to slide in the sliding cavity 16, so that the limiting post 14 does not interfere with the stamping of the metal connecting piece 28. When the punching plate 41 moves upward, the first elastic member 18 pushes the limiting post 14 to rise and reset. When the metal connecting piece 28 is grabbed by the suction nozzle 543, the second elastic member 19 pushes the sliding seat 17 to move and reset.

[0048] The implementation principle of a stamping device in an embodiment of the present application is as follows: when the stamping plate 41 moves upward, the first transmission part 51 drives the four transfer parts 52 to rotate toward the feed conveyor belt 2, the four second transmission parts 53 drive the four grabbing parts 54 to rotate toward the feed conveyor belt 2, and the four grabbing parts 54 respectively grab the four metal connecting pieces 28 on the feed station 6, the first stamping station 7, the second stamping station 8 and the third stamping station 9, and then the transfer part 52 drives the grabbing parts 54 to rotate and reset. When the stamping plate 41 moves downward, the four first transmission parts 51 drive the four transfer parts 52 to rotate toward the discharge conveyor belt 3, the four second transmission parts 53 drive the four grabbing parts 54 to rotate toward the discharge conveyor belt 3, the four grabbing parts 54 place the four metal connecting pieces 28 on the first stamping station 7, the second stamping station 8, the third stamping station 9 and the discharge station 10, and then the transfer part 52 drives the grabbing parts 54 to rotate and reset. In this way, multiple stamping stations are gathered on a base 1. After the stamping mechanism 4 completes stamping each time, the transfer mechanism 5 will grab the metal connecting piece 28 at the previous station and place it on the next station, thereby realizing continuous automatic stamping processing of the metal connecting piece 28 and improving the production efficiency of the metal connecting piece 28.

[0049] Example 2: The embodiment of the present application discloses a light shield for an engineering vehicle.

[0050] Reference Figure 10 A light shield for an engineering vehicle comprises four metal connecting pieces 28 punched out using the aforementioned punching device, a rotating connecting shaft 22, and a light shield 23. The rotating connecting shaft 22 is C-shaped, with both ends of the rotating connecting shaft 22 fixedly connected to the engineering vehicle car via bolts. Each pair of metal connecting pieces 28 is clamped to the rotating connecting shaft 22 via bolts and nuts, with the rotating connecting shaft 22 positioned within the first protrusion 25 of the metal connecting piece 28. One side of the light shield 23 is positioned between the two metal connecting pieces 28, which are then clamped and fixed to the light shield 23 via bolts and nuts.

[0051] The working principle of Example 2 is as follows: By rotating the light shield 23, the light shield 23 drives the metal connecting piece 28 to rotate on the rotating connecting shaft 22, thereby adjusting the angle of the light shield 23. The metal connecting piece 28 clamps the rotating connecting shaft 22 via the first protrusion 25, making it easy to adjust the angle of the light shield 23 while maintaining the adjusted angle. The second protrusion 26 increases the structural strength of the metal connecting piece 28, making the metal connecting piece 28 more stable in clamping the rotating connecting shaft 22.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A punching device, characterized in that: The invention comprises a base (1), a punching mechanism (4) is provided on the base (1), a feed conveyor belt (2) and a discharge conveyor belt (3) are provided on both sides of the base (1), a feed station (6), a first punching station (7), a second punching station (8), a third punching station (9) and a discharge station (10) are sequentially formed on the base (1) from the feed conveyor belt (2) to the discharge conveyor belt (3), the feed station (6) is located on the feed conveyor belt (2), the first punching station (7) is used for punching a through hole (24), the second punching station (8) is used for punching a first protrusion (25), and the third punching station ( 9) is used for punching the second protrusion (26), the discharge station (10) is located on the discharge conveyor belt (3), and a transfer mechanism (5) is provided on the base (1). When the punching mechanism (4) completes punching and moves upward, the transfer mechanism (5) moves to grab the four metal connecting pieces (28) on the feeding station (6), the first punching station (7), the second punching station (8) and the third punching station (9). When the punching mechanism (4) moves downward to punch, the transfer mechanism (5) transports the four metal connecting pieces (28) and places them on the first punching station (7), the second punching station (8), the third punching station (9) and the discharge station (10).

2. A punching device according to claim 1, characterized in that: The transfer mechanism (5) includes a first transmission part (51), four transfer parts (52), a second transmission part (53) and a gripping part (54). The four transfer parts (52) are rotatably arranged on the base (1) and are located between the five workstations. The first transmission part (51) is arranged on the base (1) and is connected to the punching mechanism (4) and the transfer part (52). When the punching mechanism (4) moves upward, the first transmission part (51) drives the transfer part (52) to rotate toward the direction of the feed conveyor belt (2). When the punching mechanism (4) moves downward, the first transmission part (51) drives the transfer part (52) to rotate toward the direction of the discharge conveyor belt (3). The gripping part (54) is provided on the base (1) and is located between the five workstations. The picking portion (54) is rotatably arranged on the transfer portion (52), and the second transmission portion (53) is arranged in the transfer portion (52) and transmits and connects the transfer portion (52) and the grabbing portion (54). When the transfer portion (52) rotates in a direction close to the feed conveyor belt (2), the second transmission portion (53) drives the grabbing portion (54) to rotate in a direction close to the feed conveyor belt (2), and the grabbing portion (54) grabs the metal connecting piece (28). When the transfer portion (52) rotates in a direction close to the discharge conveyor belt (3), the second transmission portion (53) drives the grabbing portion (54) to rotate in a direction close to the discharge conveyor belt (3), and the grabbing portion (54) places the metal connecting piece (28).

3. A punching device according to claim 2, characterized in that: The first transmission part (51) includes a first rack (511), a first gear (512), a second rack (513), four second gears (514), a synchronization shaft (515), a first synchronization wheel (516) and a synchronization belt (517). The first rack (511) is fixedly arranged at the lifting end of the punching mechanism (4). The first rack (511) is rotatably arranged in the base (1) and meshed with the first rack (511). The upper and lower ends of the first rack (511) are provided with a plurality of holes for engaging with the first gear (512). The disengaged empty slot (11) is provided, the second rack (513) is slidably arranged in the base (1) along the horizontal direction and is engaged with the first gear (512), a plurality of second gears (514) are arranged in the base (1) to rotate at intervals and are all engaged with the second rack (513), the synchronization shaft (515) is fixedly arranged on the second gear (514), the first synchronization wheel (516) is fixedly arranged on the synchronization shaft (515), and the synchronization belt (517) is sleeved on the first synchronization wheel (516) and the transfer part (52).

4. A punching device according to claim 3, characterized in that: The transfer portion (52) comprises a fixed shaft (521), a second synchronous wheel (522), a transfer column (523) and a pendulum block (524); the fixed shaft (521) is fixedly arranged in the base (1); the second synchronous wheel (522) is rotatably arranged on the fixed shaft (521); the synchronous belt (517) is sleeved on the second synchronous wheel (522); the transfer column (523) is fixedly arranged at the top end of the second synchronous wheel (522); the grabbing portion (54) is rotatably arranged at the top end of the transfer column (523); and the pendulum block (524) is fixedly arranged at the bottom end of the second synchronous wheel (522).

5. A punching device according to claim 4, characterized in that: The second transmission part (53) includes a bevel gear ring (531), a bevel gear (532) and a rotating shaft (533). The bevel gear ring (531) is fixedly arranged on the fixed shaft (521). The rotating shaft (533) is rotatably arranged in the transfer column (523). The top end of the rotating shaft (533) is fixedly connected to the grasping part (54). The bevel gear (532) is fixedly arranged at the bottom end of the rotating shaft (533), and the bevel gear (532) is meshed with the bevel gear (532).

6. A punching device according to claim 5, characterized in that: The grabbing portion (54) includes a grabbing block (541), a grabbing plate (542) and a plurality of suction nozzles (543); the grabbing block (541) is rotatably arranged at the top end of the transfer column (523) and fixedly connected to the top end of the rotating shaft (533); the grabbing plate (542) is fixedly arranged at the end of the grabbing block (541); and the plurality of suction nozzles (543) are arranged on the grabbing plate (542) and are used to absorb or release the metal connecting piece (28).

7. A punching device according to claim 4, characterized in that: A cavity (12) is provided in the second synchronous wheel (522), a buffer is stored in the cavity (12) of the second synchronous wheel (522), and a first buffer plate (13) is fixedly provided at the bottom of the cavity (12) of the second synchronous wheel (522).

8. A punching device according to claim 1, characterized in that: Four limiting columns (14) are slidably provided in the second punching station (8) and the third punching station (9) in the base (1). A sliding groove (15) is provided on the base (1) for the limiting columns (14) to slide in the horizontal direction. The limiting columns (14) are located in the sliding groove (15). The limiting columns (14) pass through the through hole (24) of the metal connecting piece (28) and are used to limit the placement position of the metal connecting piece (28). A sliding cavity (16) is provided in the base (1). The base (1) is located in the sliding cavity (16). ) is slidably arranged in a sliding seat (17), the limiting column (14) is lifted and slidably arranged in the sliding seat (17), a first elastic member (18) is arranged in the sliding seat (17) to abut the bottom end of the limiting column (14), a second elastic member (19) is arranged in the sliding cavity (16) to abut the side wall of the sliding seat (17), a slider (20) is arranged on the side wall of the limiting column (14), a sliding groove (21) connected to the top of the sliding cavity (16) is opened in the base (1), and the slider (20) is slidably arranged in the sliding groove (21).

9. A light barrier for an engineering vehicle, characterized in that: It includes a plurality of metal connecting plates (28) punched by any one of the stamping devices in claims 1-8, and also includes a rotating connecting shaft (22) and a light shielding plate (23) body, each two of the metal connecting plates (28) are fixedly connected by bolts and nuts, each two of the metal connecting plates (28) clamp the rotating connecting shaft (22) through the first protrusion (25), and the plurality of metal connecting plates (28) clamp the fixed light shielding plate (23) body.

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