A sheet metal punching device for bus station shell with trimming function

Abstract

The present invention relates to the field of sheet metal punching processing of bus stop shells, and specifically discloses a bus stop shell sheet metal punching device with a trimming function, including a punching frame, a die, a first pressure warning component, a second pressure warning component and a third pressure warning component. The present invention can be achieved by dividing the fixed die as a whole into a first fixed die module and a plurality of second fixed die modules, and dividing the die into a first module and a plurality of second modules, the first fixed die module is provided with a first pressure warning component inside, the second fixed die module is provided with a second pressure warning component and a third pressure warning component inside, the bus stop shell sheet metal parts are punched into shape by pressing the die downward, and the sheet metal parts are subjected to forming detection by the first pressure warning component, the second pressure warning component and the third pressure warning component. The structure can help the bus stop sheet metal part punching device to complete self-inspection, and automatically complete the trimming and multiple fixed-point punching of the sheet metal parts, thereby improving the punching quality of the bus stop sheet metal parts.

Description

Technical Field

[0001] The invention relates to the field of sheet metal punching processing of a bus stop shell, and more specifically to a bus stop shell sheet metal punching device with a trimming function. Background Art

[0002] Sheet metal parts have the characteristics of light weight, high strength, conductivity, low cost and good mass production performance. They are widely used in electronics, communications, automotive industry, medical equipment and other fields. When using sheet metal parts to process the outer shell of the bus stop, corresponding punching processing is required to meet the corresponding processing requirements.

[0003] When punching and shaping the sheet metal parts, the existing bus stop shell sheet metal punching device presses the sheet metal parts on the fixed die to punch and shape them. However, due to the influence of the internal stress of the sheet metal parts themselves, when the external load is removed, the stress still remaining in the sheet metal parts will cause the sheet metal parts to return to the position before deformation from the position after deformation, thereby reducing the punching quality of the bus stop shell sheet metal.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a bus stop shell sheet metal punching device with a trimming function. Summary of the invention

[0005] The object of the present invention is to provide a bus stop shell sheet metal punching device with a trimming function to solve the above-mentioned problem.

[0006] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

[0007] A sheet metal punching device for a bus platform shell with a trimming function comprises a punching frame, a die, a first pressure warning component, a second pressure warning component and a third pressure warning component, wherein a bottom plate is fixedly mounted at the lower end of the punching frame, a control panel is fixedly mounted at the front of the upper end of the punching frame, an electric cylinder is fixedly mounted at the lower end of the punching frame, the die comprises a first module and a plurality of second modules, the second modules are mounted at the four ends of the outer side of the first module by means of a clamping connection, the bottom height of the first module is lower than the bottom height of the second module, the first module is mounted at the output end of the electric cylinder by means of a fixed connection, a first fixed die module is fixedly mounted at the front of the upper end of the bottom plate, a plurality of first longitudinal limit grooves which are connected to the bottom plate are arranged inside the first fixed die module, and a first transverse limit groove which is connected to the first longitudinal limit groove is arranged at the front end of the bottom plate The first pressure warning component is installed in the first longitudinal limit groove and the first transverse sealing groove, the second fixed mold modules are fixedly installed at the four ends of the outer side of the first fixed mold module, the height of the second fixed mold module is greater than the height of the first fixed mold module, a plurality of second longitudinal limit grooves are arranged on the upper end of the second fixed mold module, a second transverse sealing groove which is connected to the second longitudinal limit groove is arranged at the lower part of one end of the second longitudinal limit groove away from the first fixed mold module, the second pressure warning component is installed in the second longitudinal limit groove and the second transverse sealing groove by a fixed connection method, a plurality of transverse limit grooves are arranged on the upper end of the inner side of the second fixed mold module, an L-shaped sealing groove is arranged at the lower end of the transverse limit groove away from the first fixed mold module, and the third pressure warning component is installed in the transverse limit groove and the L-shaped sealing groove by a fixed connection method.

[0008] As a further improvement of the present invention, a plurality of connecting parts are fixedly installed at the lower end of the punching frame, and the connecting parts are distributed at the four ends of the outer side of the electric cylinder. The connecting parts include a fixed sleeve, a first spring and a connecting rod. The fixed sleeve is installed at the lower end of the punching frame by a fixed connection method, the first spring is installed at the top of the fixed sleeve by a fixed connection method, the connecting rod is installed at the bottom of the first spring by a fixed connection method, and the connecting rod is slidably installed at the lower end of the fixed sleeve, and the end of the connecting rod away from the first spring is fixedly connected to the second module.

[0009] As a further improvement of the present invention, a magnetic shielding block is fixedly embedded in the middle part of the first module, and storage grooves are provided at the four ends of the outer side of the first module. Limiting slide grooves that penetrate the storage grooves are provided on both sides of the storage grooves, and a connecting plug plate is slidably installed inside the storage groove. Limiting sliders are fixedly installed on one end of both sides of the connecting plug plate close to the magnetic shielding block, and the limiting sliders are movably clamped in the limiting slide grooves. Electromagnets are fixedly embedded at the four ends of the first module, and the electromagnets are located between the storage grooves and the magnetic shielding block. Magnetic blocks are fixedly embedded at one end of multiple connecting plug plates close to the electromagnets, and the magnetic blocks are magnetically connected to the electromagnets.

[0010] As a further improvement of the present invention, a plurality of second modules are each provided with a card slot in the middle of the inner side, and a plurality of connecting plug boards are each inserted into the card slot, and the card slot is adapted to the cross-sectional shape of the connecting plug board.

[0011] As a further improvement of the present invention, the first pressure warning component includes a plurality of first movable rods, a second spring, a colored pigment, a sealing film and a warning shell. The plurality of first movable rods are movably inserted at the upper end of the first longitudinal limit groove, a first protrusion is fixedly installed on the upper end of the first movable rod, a sealing ring is fixedly installed on the outer lower end of the first movable rod, the second spring is fixedly connected to the bottom of the first movable rod by a fixed connection method, the end of the second spring away from the first movable rod is fixedly connected to the bottom of the first transverse sealing groove, the colored pigment is filled in the bottom of the first longitudinal limit groove and the inside of the first transverse sealing groove, the sealing film is fixedly connected to the front end of the first transverse sealing groove by a fixed connection method, the warning shell is fixedly connected to the middle of the front end of the bottom plate by a fixed connection method, and the warning shell is located at the outer end of the sealing film.

[0012] As a further improvement of the present invention, the sealing film is made of an elastic plastic film, the warning shell is made of a transparent acrylic material, and the shape of the warning shell is semicircular.

[0013] As a further improvement of the present invention, the second pressure warning assembly includes a second movable rod, a first lighting lamp, a third spring and an upper sealing plate, the second movable rod is movably inserted in the upper end of the second longitudinal limit groove, the diameter of the second movable rod is adapted to the inner diameter of the second longitudinal limit groove, a second protrusion is fixedly installed on the upper end of the second movable rod, the third spring is installed at the bottom of the second movable rod by a fixed connection method, and the end of the third spring away from the second movable rod is fixedly connected to the second fixed mold module, the first lighting lamp is fixedly embedded on the inner wall of the second longitudinal limit groove close to one end of the first fixed mold module, and the first lighting lamp is consistent in height with the second transverse sealing groove, and the upper sealing plate is installed in the second transverse sealing groove by a fixed connection method.

[0014] As a further improvement of the present invention, the third pressure warning assembly includes a third movable rod, a fourth spring, a second lighting lamp and a lower sealing plate. The third movable rod is movably inserted in the transverse limit groove at one end close to the first fixed mold module. The fourth spring is installed in the end of the third movable rod away from the first fixed mold module through a fixed connection method. The third protrusion is fixedly installed on the inner side of the third movable rod. The second lighting lamp is fixedly embedded in the upper end of the transverse limit groove, and the second lighting lamp is located above the L-shaped sealing groove. The lower sealing plate is installed in the lower end of the L-shaped sealing groove through a fixed connection method.

[0015] As a further improvement of the present invention, the plurality of lower sealing plates are all located below the upper sealing plate, and the lower sealing plates and the upper sealing plates are both made of transparent plastic plate material.

[0016] As a further improvement of the present invention, the shapes of the first protrusions, second protrusions and third protrusions are all semicircular, and the first protrusions protrude from the surface of the first fixed mold module, and the second protrusions and third protrusions protrude from the surface of the second fixed mold module.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] This solution can be achieved by dividing the fixed mold as a whole into a first fixed mold module and a plurality of second fixed mold modules, and dividing the pressure mold into a first module and a plurality of second modules, a first pressure warning component is arranged inside the first fixed mold module, and a second pressure warning component and a third pressure warning component are installed inside the second fixed mold module, placing the bus platform shell sheet metal part on the upper ends of the first fixed mold module and the second fixed mold module, pressing the pressure mold downward to stamp the bus platform shell sheet metal part, and performing forming detection on the sheet metal part through the first pressure warning component, the second pressure warning component and the third pressure warning component, and the plurality of first convex parts, the second convex parts and the third convex parts are defaulted from the first convex parts. When the sheet metal part is formed and fits the upper arms and inner walls of the first and second fixed die modules, the first convex part, the second convex part and the third convex part will be squeezed and completely accommodated, indicating that the stamping forming of the sheet metal part is successful and can be directly discharged; when the sheet metal part cannot press the multiple first convex parts, the second convex parts and the third convex parts into the first and second fixed die modules, it means that the forming has failed and stamping and shaping are required again. This structure can help the bus stop sheet metal punching device to complete self-inspection, and automatically complete the trimming and multiple fixed-point stamping of the sheet metal parts, thereby improving the punching quality of the bus stop sheet metal parts.

[0019] Whether the multiple first protrusions on the upper end of the first fixed mold module are completely stored can be determined by checking whether the sealing film inside the warning shell has expanded to fit the inner wall of the warning shell. When the multiple first protrusions are completely stored, the first movable plug rod moves downward to squeeze the colored pigment at the bottom to expand the sealing film and completely fill the warning shell. If there are gaps in the warning shell, it means that the first protrusions have not been completely stored and the first module needs to be stamped again. The upper end and inner side of the second molding template are equipped with protruding second and third protrusions. When the second and third protrusions are completely stored, the second and third protrusions will block the light of the first and second lighting lamps. The staff can directly judge the stamping condition of the sheet metal parts on the upper end of the second fixed mold module by observing the light transmittance of the multiple upper sealing plates and the lower sealing plates on the surface of the second fixed mold module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the overall structure of the sheet metal punching device for the shell of a bus stop according to the present invention;

[0021] Figure 2 A front view of the installation state of the die of the present invention;

[0022] Figure 3 is a cross-sectional view of a die of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the second pressure warning component inside the second fixed mold module of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the third pressure warning component inside the second fixed mold module of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the first pressure warning component inside the first fixed mold module of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the first pressure warning component of the present invention in the extrusion state.

[0027] Description of the numbers in the figure:

[0028] 1. Punching frame; 2. Control panel; 3. Bottom plate; 4. Electric cylinder; 5. Pressing die; 51. First module; 511. Storage slot; 512. Limiting slide slot; 513. Electromagnet; 514. Magnetic shielding block; 515. Connecting plug plate; 5151. Limiting slide block; 5152. Magnetic block; 52. Second module; 521. Slot; 6. Connecting piece; 61. Fixed sleeve; 62. First spring; 63. Connecting rod; 7. First fixed die module; 71. First pressure warning assembly; 711. First longitudinal limiting slot; 712. First transverse sealing slot; 713. First movable plug rod; 7131. First convex piece; 7132. Sealing piece Sealing ring; 714, second spring; 715, color pigment; 716, sealing film; 717, warning shell; 8, second fixed mold module; 801, second longitudinal limiting groove; 8011, second transverse sealing groove; 802, transverse limiting groove; 8021, L-shaped sealing groove; 81, second pressure warning assembly; 811, second movable plug rod; 8111, second protrusion; 812, first lighting lamp; 813, third spring; 814, upper sealing plate; 82, third pressure warning assembly; 821, third movable plug rod; 8211, third protrusion; 822, fourth spring; 823, second lighting lamp; 824, lower sealing plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1-7 , a sheet metal punching device for a bus stop shell with a trimming function, comprising:

[0032] A punching frame 1, a bottom plate 3 is fixedly installed at the lower end of the punching frame 1, a control panel 2 is fixedly installed at the front of the upper end of the punching frame 1, and an electric cylinder 4 is fixedly installed at the lower end of the punching frame 1;

[0033] The die 5 comprises a first module 51 and a plurality of second modules 52. The second modules 52 are mounted at the four ends of the outer side of the first module 51 by means of a snap connection. The bottom height of the first module 51 is lower than the bottom height of the second module 52. The first module 51 is mounted at the output end of the electric cylinder 4 by means of a fixed connection. A plurality of connectors 6 are fixedly mounted at the lower end of the punching frame 1. The connectors 6 are distributed at the four ends of the outer side of the electric cylinder 4. The connectors 6 comprise a fixed sleeve 61, a first spring 62 and a connecting rod 63. The fixed sleeve 61 is mounted at the lower end of the punching frame 1 by means of a fixed connection. The first spring 62 is mounted at the top of the fixed sleeve 61 by means of a fixed connection. The connecting rod 63 is mounted at the bottom of the first spring 62 by means of a fixed connection. The connecting rod 63 is slidably mounted at the lower end of the fixed sleeve 61. The end of the connecting rod 63 away from the first spring 62 is fixedly connected to the second module 52. A magnetic shield is fixedly embedded in the middle of the first module 51. The first module 51 is provided with a receiving groove 511 at the four ends of the outer side, and the two sides of the receiving groove 511 are provided with a limiting slide groove 512 that penetrates the receiving groove 511. A connecting plug plate 515 is slidably installed inside the receiving groove 511. The two ends of the connecting plug plate 515 close to the magnetic shielding block 514 are fixedly installed with a limiting slider 5151. The limiting slider 5151 is movably arranged in the limiting slide groove 512. The four ends of the first module 51 are fixedly embedded in the inner side of the first module 51. An electromagnet 513 is provided, and the electromagnet 513 is located between the storage slot 511 and the magnetic shielding block 514. A magnetic block 5152 is fixedly embedded at one end of the inner part of a plurality of connecting plug plates 515 close to the electromagnet 513, and the magnetic block 5152 is magnetically connected to the electromagnet 513. A card slot 521 is provided in the middle part of the inner side of the plurality of second modules 52, and the plurality of connecting plug plates 515 are all carded in the card slot 521, and the card slot 521 is adapted to the cross-sectional shape of the connecting plug plates 515.

[0034] Specifically, the die 5 is composed of a first module 51 and a plurality of second modules 52. In the default state, the electromagnet 513 is energized to repel the magnetic block 5152, pushing the connecting plug plate 515 to be inserted into the slot 521 of the second module 52, so that the second module 52 and the first module 51 form a whole. The second module 52 can be pressed down synchronously with the first module 51 to perform the initial stamping and shaping of the sheet metal part. After the processed sheet metal part is subsequently inspected, if it is found that part of the position of the sheet metal part has not been shaped, the upper end of the position can be retained. The second module 52 is connected to the first module 51, and the current direction of the electromagnet 513 at other positions is changed to disconnect the second modules 52 at other positions from the first module 51. The disconnected second modules 52 are provided with a connecting piece 6 on the upper end for stable limiting. The electric cylinder 4 is started to drive the first module 51 and the second module 52 for secondary stamping to be pressed down, and the positions that fail the inspection are subjected to secondary stamping and shaping. This structure can realize the zoning inspection and trimming of sheet metal parts, effectively improve the functionality of the device, and improve the processing quality of sheet metal parts.

[0035] The first pressure warning component 71, the first fixed mold module 7 is fixedly installed at the front upper end of the bottom plate 3, a plurality of first longitudinal limit grooves 711 penetrating the bottom plate 3 are arranged inside the first fixed mold module 7, and a first transverse sealing groove 712 communicating with the first longitudinal limit groove 711 is arranged at the front end of the bottom plate 3. The first pressure warning component 71 is installed in the first longitudinal limit groove 711 and the first transverse sealing groove 712. The first pressure warning component 71 includes a plurality of first movable plug rods 713, a second spring 714, a color pigment 715, a sealing film 716 and a warning shell 717. A plurality of first movable plug rods 713 are movably inserted in the upper end of the first longitudinal limit groove 711, and a first convex part 7131 is fixedly installed on the upper end of the first movable plug rod 713. A sealing ring 7132 is fixedly installed at the lower end of the outer side of 13, the second spring 714 is installed at the bottom of the first movable plug rod 713 by a fixed connection method, the end of the second spring 714 away from the first movable plug rod 713 is fixedly connected to the bottom of the first transverse sealing groove 712, the color pigment 715 is filled in the bottom of the first longitudinal limiting groove 711 and the inside of the first transverse sealing groove 712, the sealing film 716 is installed at the front end of the first transverse sealing groove 712 by a fixed connection method, the warning shell 717 is installed at the middle of the front end of the bottom plate 3 by a fixed connection method, and the warning shell 717 is located at the outer end of the sealing film 716, the sealing film 716 is made of an elastic plastic film, the warning shell 717 is made of a transparent acrylic material, and the shape of the warning shell 717 is semicircular.

[0036] Specifically, by setting a first pressure warning component 71 inside the first fixed mold module 7, the sheet metal at the bottom position of the first module 51 can be detected. A plurality of protruding first convex parts 7131 are set at the upper end of the first fixed mold module 7. However, after the sheet metal is molded once, the sheet metal is pressed on the upper end of the first fixed mold module 7, and the plurality of first convex parts 7131 are squeezed into the first fixed mold module 7 for storage. At this time, the first convex parts 7131 squeeze the color pigment 715 at the bottom into the sealing film 716, so that the sealing film 716 expands and fills the warning shell 717. The volume of the plurality of first convex parts 7131 is the same as the internal volume of the warning shell 717. Therefore, when multiple first protrusions 7131 are all accommodated, the sealing film 716 is expanded by the filling of colored pigment 715 until it is completely fitted with the inner wall of the warning shell 717. At this time, the sheet metal processing and forming inspection at the upper end of the first fixed mold module 7 passes; however, the sheet metal parts at some positions will bulge, which will cause the first protrusion 7131 at this position to be unable to be completely accommodated in the first fixed mold module 7. The first protrusion 7131 bulges, and the colored pigment 715 filled in the sealing film 716 is reduced and cannot be completely fitted with the inner wall of the warning shell 717, and there is a gap, which means that the sheet metal parts at the upper end of the first fixed mold module 7 have failed the inspection and need to be stamped and finalized for the second time.

[0037] The second pressure warning component 81, the four ends of the outer side of the first fixed mold module 7 are fixedly installed with the second fixed mold module 8, the height of the second fixed mold module 8 is greater than the height of the first fixed mold module 7, and the upper end of the second fixed mold module 8 is provided with a plurality of second longitudinal limit grooves 801, and the lower part of the end of the second longitudinal limit groove 801 away from the first fixed mold module 7 is provided with a second transverse sealing groove 8011 which is connected with the second longitudinal limit groove 801. The second pressure warning component 81 is installed in the second longitudinal limit groove 801 and the second transverse sealing groove 8011 by a fixed connection. The second pressure warning component 81 includes a second movable plug rod 811, a first lighting lamp 812, a third spring 813 and an upper sealing plate 814. The second movable plug rod 81 1 is movably inserted in the upper end of the second longitudinal limiting groove 801, the diameter of the second movable plug rod 811 is adapted to the inner diameter of the second longitudinal limiting groove 801, the upper end of the second movable plug rod 811 is fixedly installed with a second protrusion 8111, the third spring 813 is installed at the bottom of the second movable plug rod 811 by a fixed connection method, and the end of the third spring 813 away from the second movable plug rod 811 is fixedly connected to the second fixed mold module 8, the first lighting lamp 812 is fixedly embedded on the inner wall of the second longitudinal limiting groove 801 close to the first fixed mold module 7, and the height of the first lighting lamp 812 is consistent with that of the second transverse sealing groove 8011, and the upper sealing plate 814 is installed in the second transverse sealing groove 8011 by a fixed connection method;

[0038] The third pressure warning component 82 is provided with a plurality of transverse limit grooves 802 at the upper inner end of the second fixed mold module 8, and an L-shaped sealing groove 8021 is provided at the lower end of the transverse limit groove 802 away from the first fixed mold module 7. The third pressure warning component 82 is installed in the transverse limit groove 802 and the L-shaped sealing groove 8021 by a fixed connection method. The third pressure warning component 82 includes a third movable plug rod 821, a fourth spring 822, a second lighting lamp 823 and a lower sealing plate 824. The third movable plug rod 821 is movable The fourth spring 822 is installed at one end of the third movable rod 821 away from the first fixed mold module 7 in the transverse limiting groove 802, and the third convex piece 8211 is fixedly installed on the inner side of the third movable rod 821. The second illuminating lamp 823 is fixedly embedded in the upper end of the transverse limiting groove 802, and the second illuminating lamp 823 is located above the L-shaped sealing groove 8021. The lower sealing plate 824 is installed at the lower end of the L-shaped sealing groove 8021 in a fixed connection manner;

[0039] Multiple lower sealing plates 824 are all located below the upper sealing plate 814. The materials of the lower sealing plates 824 and the upper sealing plates 814 are both transparent plastic plate materials. The shapes of the multiple first protrusions 7131, the second protrusions 8111 and the third protrusions 8211 are all semicircular, and the first protrusions 7131 protrude from the surface of the first fixed mold module 7, and the second protrusions 8111 and the third protrusions 8211 protrude from the surface of the second fixed mold module 8.

[0040] Specifically, a second pressure warning component 81 and a third pressure warning component 82 are provided inside the plurality of second fixed mold modules 8. After the sheet metal is finalized, if the forming of the sheet metal is successful, the plurality of second protrusions 8111 and the third protrusions 8211 are completely received inside the second fixed mold module 8, and the second movable plug rod 811 and the third movable plug rod 821 move inward, squeezing the third spring 813 and the fourth spring 822 to contract, and the second movable plug rod 811 and the third movable plug rod 821 will completely block the first lighting lamp 812 and the second lighting lamp 823, and the staff sees no light inside the plurality of upper sealing plates 814 and the lower sealing plates 824 from the outside; however, when there is a position on the sheet metal that has not been successfully finalized, the first lighting lamp 812 and the second lighting lamp 823 connected to the position cannot be completely blocked, and then the staff sees light inside the upper sealing plate 814 or the lower sealing plate 824 from the outside, indicating that the finalization at that position has failed and a second stamping is required.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0042] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A sheet metal punching device for a bus stop shell with a trimming function, characterized in that: include: A punching frame (1), wherein a bottom plate (3) is fixedly mounted on the lower end of the punching frame (1), a control panel (2) is fixedly mounted on the front of the upper end of the punching frame (1), and an electric cylinder (4) is fixedly mounted on the lower end of the punching frame (1); A die (5), the die (5) comprising a first module (51) and a plurality of second modules (52), the second modules (52) being mounted on four ends of the outer side of the first module (51) by means of a snap connection, the bottom height of the first module (51) being lower than the bottom height of the second modules (52), and the first module (51) being mounted on the output end of the electric cylinder (4) by means of a fixed connection; A first pressure warning component (71), wherein a first fixed mold module (7) is fixedly mounted on the front upper end of the bottom plate (3), a plurality of first longitudinal limit grooves (711) penetrating the bottom plate (3) are arranged inside the first fixed mold module (7), a first transverse sealing groove (712) penetrating the first longitudinal limit groove (711) is arranged at the front inner end of the bottom plate (3), the first pressure warning component (71) is installed in the first longitudinal limit groove (711) and the first transverse sealing groove (712), the first pressure warning component (71) comprises a plurality of first movable plug rods (713), a second spring (714), a color pigment (715), a sealing film (716) and a warning shell (717), the plurality of first movable plug rods (713) are movably inserted in the upper end of the first longitudinal limit groove (711), the first movable plug rods (715) are movably inserted in the upper end of the first longitudinal limit groove (711), A first protruding piece (7131) is fixedly mounted on the upper end of the plug rod (713); a sealing ring (7132) is fixedly mounted on the lower end of the outer side of the first movable plug rod (713); the second spring (714) is fixedly mounted on the bottom of the first movable plug rod (713) by a fixed connection method; an end of the second spring (714) away from the first movable plug rod (713) is fixedly connected to the bottom of the first transverse sealing groove (712); the color pigment (715) is filled in the bottom of the first longitudinal limiting groove (711) and the inside of the first transverse sealing groove (712); the sealing film (716) is fixedly mounted on the front end of the first transverse sealing groove (712) by a fixed connection method; the warning shell (717) is fixedly mounted on the middle of the front end of the bottom plate (3) by a fixed connection method, and the warning shell (717) is located at the outer end of the sealing film (716); A second pressure warning component (81), wherein the first fixed mold module (7) is fixedly mounted with a second fixed mold module (8) at four ends of the outer side thereof, the height of the second fixed mold module (8) is greater than the height of the first fixed mold module (7), a plurality of second longitudinal limit grooves (801) are arranged at the upper end of the second fixed mold module (8), a second transverse sealing groove (8011) which is in communication with the second longitudinal limit groove (801) is arranged at the lower part of one end of the second longitudinal limit groove (801) away from the first fixed mold module (7), the second pressure warning component (81) is mounted in the second longitudinal limit groove (801) and the second transverse sealing groove (8011) by a fixed connection, the second pressure warning component (81) comprises a second movable insert rod (811), a first illuminating lamp (812), a third spring (813) and an upper sealing plate (814), the second movable insert rod (811) The rod (811) is movably inserted into the upper end of the second longitudinal limit groove (801); the diameter of the second movable insertion rod (811) is matched with the inner diameter of the second longitudinal limit groove (801); the upper end of the second movable insertion rod (811) is fixedly installed with a second protrusion (8111); the third spring (813) is installed at the bottom of the second movable insertion rod (811) by a fixed connection method; and the end of the third spring (813) away from the second movable insertion rod (811) is fixedly connected to the second fixed mold module (8); the first lighting lamp (812) is fixedly embedded on the inner wall of the second longitudinal limit groove (801) near the end of the first fixed mold module (7); the first lighting lamp (812) is consistent in height with the second transverse sealing groove (8011); and the upper sealing plate (814) is installed in the second transverse sealing groove (8011) by a fixed connection method; A third pressure warning component (82), wherein a plurality of transverse limiting grooves (802) are provided at the inner upper end of the second fixed mold module (8), an L-shaped sealing groove (8021) is provided at the lower end of the transverse limiting groove (802) away from the first fixed mold module (7), the third pressure warning component (82) is installed in the transverse limiting groove (802) and the L-shaped sealing groove (8021) by a fixed connection, the third pressure warning component (82) comprises a third movable plug rod (821), a fourth spring (822), a second illuminating lamp (823) and a lower sealing plate (824), the third movable plug rod (82 1) movably inserted in one end of the transverse limiting groove (802) close to the first fixed mold module (7), the fourth spring (822) is installed on one end of the third movable insertion rod (821) away from the first fixed mold module (7) by a fixed connection method, the third convex part (8211) is fixedly installed on the inner side of the third movable insertion rod (821), the second lighting lamp (823) is fixedly embedded in the upper end of the transverse limiting groove (802), and the second lighting lamp (823) is located above the L-shaped sealing groove (8021), and the lower sealing plate (824) is installed in the lower end of the L-shaped sealing groove (8021) by a fixed connection method.

2. A bus stop shell sheet metal punching device with a trimming function according to claim 1, characterized in that: A plurality of connecting members (6) are fixedly installed at the lower end of the punching frame (1), and the connecting members (6) are distributed at the four ends of the outer side of the electric cylinder (4). The connecting members (6) include a fixed sleeve (61), a first spring (62) and a connecting rod (63). The fixed sleeve (61) is installed at the lower end of the punching frame (1) by a fixed connection method, the first spring (62) is installed at the top of the fixed sleeve (61) by a fixed connection method, the connecting rod (63) is installed at the bottom of the first spring (62) by a fixed connection method, and the connecting rod (63) is slidably installed at the lower end of the fixed sleeve (61), and the end of the connecting rod (63) away from the first spring (62) is fixedly connected to the second module (52).

3. The sheet metal punching device for bus stop shell with trimming function according to claim 1, characterized in that: A magnetic shielding block (514) is fixedly embedded in the middle of the first module (51), four ends of the outer side of the first module (51) are provided with storage grooves (511), both sides of the storage groove (511) are provided with limit sliding grooves (512) that penetrate the storage groove (511), a connecting plug plate (515) is slidably installed inside the storage groove (511), and both ends of the connecting plug plate (515) close to the magnetic shielding block (514) are fixedly installed with limit sliding blocks (512). 151), the limit slider (5151) is movably mounted in the limit slide groove (512), the first module (51) is internally fixedly embedded with electromagnets (513) at four ends, the electromagnets (513) are located between the storage groove (511) and the magnetic shielding block (514), and a plurality of connecting plug plates (515) are internally fixedly embedded with magnetic blocks (5152) at one end close to the electromagnet (513), and the magnetic blocks (5152) are magnetically connected to the electromagnets (513).

4. The sheet metal punching device for bus stop shell with trimming function according to claim 3, characterized in that: A plurality of the second modules (52) are each provided with a card slot (521) at the middle of the inner side thereof, and a plurality of the connection plug boards (515) are each card slotted in the card slot (521), wherein the card slot (521) is adapted to the cross-sectional shape of the connection plug board (515).

5. The sheet metal punching device for bus stop shell with trimming function according to claim 1, characterized in that: The sealing film (716) is made of an elastic plastic film, the warning shell (717) is made of a transparent acrylic material, and the shape of the warning shell (717) is semicircular.

6. The sheet metal punching device for bus stop shell with trimming function according to claim 1, characterized in that: The plurality of lower sealing plates (824) are all located below the upper sealing plate (814), and the lower sealing plates (824) and the upper sealing plates (814) are both made of transparent plastic plate material.

7. The sheet metal punching device for bus stop shell with trimming function according to claim 1, characterized in that: The first protrusions (7131), the second protrusions (8111) and the third protrusions (8211) are all semicircular in shape, and the first protrusions (7131) protrude from the surface of the first fixed mold module (7), and the second protrusions (8111) and the third protrusions (8211) protrude from the surface of the second fixed mold module (8).

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