A continuous stamping equipment for processing metal sheets

Abstract

This invention discloses a continuous stamping equipment for metal sheet processing, relating to the field of stamping equipment. It includes a worktable, on which a housing and a lower die are fixedly connected. A lifting frame is slidably connected to the inner bottom wall of the worktable. Through the arrangement of the lifting frame, lifting plate, lifting groove, and lifting plate, when the lifting frame moves horizontally, it drives a slider to slide in the lifting groove, causing the lifting plate to rise. After the sheet metal completes its first stamping bend, the rising lifting plate drives the lifting plate to rise. The lifting plates on both sides of the sheet metal lift it through corrugated grooves, thus preventing the sheet metal from slightly springing back after stamping, which would cause the corrugation opening angle to increase. This would prevent the outer side of the corrugation from tightly adhering to the inner walls of the first and second bending grooves, generating significant friction and clamping force, thus trapping the sheet metal within the first and second bending grooves and completing the stripping process from the lower die.

Description

Technical Field

[0001] This invention relates to the field of stamping equipment technology, and in particular to a continuous stamping equipment for processing metal sheets. Background Technology

[0002] Stamping is a forming process that uses a press and dies to apply external force to sheet metal, strip, tube, and profile, causing plastic deformation or separation to obtain workpieces (stamped parts) of the required shape and size. Stamping bending refers to the process where metal sheet material undergoes elastic deformation under the stamping pressure of a die, followed by plastic deformation. Pressure is applied until the stroke ends, bringing the upper and lower dies into full contact with the sheet material to complete the bending of the sheet material, commonly known as bending.

[0003] Stamping and bending of metal sheets is a common process in manufacturing, especially in the production of workpieces that need to form specific corrugations or continuous bending shapes. There are two ways to perform corrugation or continuous bending on metal sheets: one is integral bending and the other is multi-segment single bending.

[0004] In multi-stage single-stamping forming, the sheet metal will spring back after being stamped and bent due to the elasticity of the material itself. This springback will cause the formed bent part to try to return to straightness, and its outer side will often generate greater friction and clamping force with the inner wall of the bending groove of the lower die, causing the workpiece to "get stuck" in the die cavity, making it difficult to remove the material and greatly affecting the efficiency of sheet metal stamping. Summary of the Invention

[0005] The purpose of this invention is to address the problem that during multi-segment single-pass stamping, the sheet metal experiences springback after bending due to the material's elasticity. This springback causes the bent portion to attempt to straighten, resulting in significant friction and clamping forces between its outer side and the inner wall of the bending groove in the lower die. This causes the workpiece to become stuck in the die cavity, making unloading difficult and greatly affecting the efficiency of sheet metal stamping. Therefore, this invention proposes a continuous stamping equipment for metal sheet metal processing.

[0006] To achieve the above objectives, the present invention employs the following technology: a continuous stamping equipment for metal sheet processing, comprising a worktable, a housing and a lower die fixedly connected to the worktable, a lifting frame slidably connected to the inner bottom wall of the worktable, an electric push rod fixedly connected to the inner top wall of the worktable, a push plate fixedly connected to the output end of the electric push rod, moving slots on both sides of the top of the worktable, a feeding mechanism slidably connected inside the moving slots, and a stamping mechanism fixedly connected to the top of the housing;

[0007] The feeding mechanism includes a lifting plate slidably connected inside the moving groove. The lifting plate has a lifting groove. A lifting plate is slidably connected to one side of the lifting plate. One end of the lifting plate is slidably connected to the push plate through a T-groove. The lifting plate can be moved horizontally in the moving groove by pushing the push plate horizontally. One side of the two lifting plates is in contact with the two sides of the lower mold.

[0008] Both sides of the inner wall of the lifting frame are fixedly connected with sliders that are adapted to the lifting groove. By moving the lifting frame horizontally, the sliders can slide inside the lifting groove. The sliding of the sliders inside the lifting groove can drive the lifting plate and the lifting plate to move up and down in the moving groove.

[0009] As a further description of the continuous stamping equipment for metal sheet processing described above: the lower die is provided with a first bending groove and a second bending groove.

[0010] As a further description of the continuous stamping equipment for metal sheet processing described above: a positioning groove is provided on one side of the top of the lifting plate, and a corrugated groove adapted to the first bending groove and the second bending groove is provided on the positioning groove.

[0011] As a further description of the continuous stamping equipment for metal sheet processing described above: the stamping mechanism includes a cylinder mounted on the top of the housing, a shrink shell fixedly connected to the bottom of the cylinder, and push rods extending through both sides of the top of the shrink shell. A first stamping block and a second stamping block are fixedly connected to the bottom of the two push rods respectively. Springs are sleeved on the surfaces of the two push rods, wherein the tops of the first stamping block and the second stamping block are connected to the shrink shell through the springs, and an anti-tilting plate is provided on one side of the first stamping block.

[0012] As a further description of the continuous stamping equipment for metal sheet processing described above: the length of the first stamping block is less than the length of the second stamping block, and the first stamping block and the second stamping block are arranged in a stepped manner.

[0013] As a further description of the continuous stamping equipment for metal sheet processing described above: a motor is fixedly connected to the inner bottom wall of the worktable, a lead screw is connected to the output end of the motor, and a crossbar is rotatably connected to the other end of the lead screw through a bearing. The two ends of the crossbar are connected to the two sides of the inner wall of the worktable, and the surface of the lead screw is threadedly connected to the lifting frame.

[0014] As a further description of the continuous stamping equipment for metal sheet processing described above: two lifting plates are symmetrically arranged, and two sliding rods are provided on one side of the two lifting plates. When the lifting plates move up and down, the lifting plate moves up and down together with the lifting plate via the sliding rods.

[0015] As a further description of the continuous stamping equipment for metal sheet processing described above: the first stamping block and the second stamping block are adapted to the first bending groove and the second bending groove, and the thickness of the first stamping block and the second stamping block are adapted to the distance between the two positioning grooves.

[0016] In summary, due to the adoption of the above-mentioned technology in the continuous stamping equipment for metal sheet processing, the beneficial effects of this invention are:

[0017] With the lifting frame, lifting plate, lifting groove, and lifting plate in use, when the lifting frame moves horizontally, it drives the slider to slide in the lifting groove, causing the lifting plate to rise. After the sheet metal completes the first stamping and bending, the lifting plate rises, driving the lifting plate to rise as well. The lifting plates on both sides of the sheet metal lift the sheet metal through the corrugated grooves on them. This prevents the sheet metal from slightly rebounding after stamping, which would cause the opening angle of the corrugations to try to increase. This would cause the outer side of the corrugations to tightly adhere to the inner wall of the first bending groove and the second bending groove, generating huge friction and clamping force, and getting stuck in the first bending groove and the second bending groove, thus completing the stripping of the sheet metal from the lower mold.

[0018] Meanwhile, the positioning groove on the lifting plate positions the sheet metal during a series of operations such as feeding, stamping, and unloading, thereby preventing the sheet metal from shifting as a whole during stamping and causing one side of the sheet metal to exceed the corrugated groove on one side. This positioning protects the sheet metal from distortion and the formation of waste edges during stamping. Attached Figure Description

[0019] Figure 1 An overall perspective view provided according to an embodiment of the present invention is shown;

[0020] Figure 2 A front view of the apparatus provided according to an embodiment of the present invention is shown;

[0021] Figure 3 A perspective view of the lower mold provided according to an embodiment of the present invention is shown;

[0022] Figure 4 A perspective view of a lifting plate provided according to an embodiment of the present invention is shown;

[0023] Figure 5 A perspective view of a lifting plate provided according to an embodiment of the present invention is shown;

[0024] Figure 6 A structural diagram of a feeding mechanism provided according to an embodiment of the present invention is shown;

[0025] Figure 7 A perspective view of a lifting frame provided according to an embodiment of the present invention is shown;

[0026] Figure 8A schematic diagram of a corrugated groove provided according to an embodiment of the present invention is shown.

[0027] Legend:

[0028] 10. Workbench; 11. Lifting frame; 12. Electric push rod; 13. Push plate; 14. Slider;

[0029] 20. Outer shell;

[0030] 30. Lower mold; 31. First bending groove; 32. Second bending groove;

[0031] 40. Feeding mechanism; 41. Lifting plate; 42. Lifting groove; 43. Lifting plate; 431. Positioning groove; 432. Corrugated groove; 44. Slide rod;

[0032] 50. Stamping mechanism; 51. Cylinder; 52. Shrink shell; 53. Push rod; 54. First stamping block; 55. Second stamping block; 56. Spring; 57. Anti-pry plate;

[0033] 60. Motor; 61. Lead screw. Detailed Implementation

[0034] The following will describe, with reference to the accompanying drawings of the embodiments of the present invention, a continuous stamping apparatus for processing metal sheets according to the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] Reference Figures 1-8 This embodiment provides a continuous stamping equipment for processing metal sheets, including a worktable 10, a housing 20 fixedly connected to the worktable 10, and a lower die 30 fixedly connected to the middle of the upper surface of the worktable 10. The lower die 30 has a first bending groove 31 and a second bending groove 32. A lifting frame 11 is slidably connected to the inner bottom wall of the worktable 10. An electric push rod 12 is fixedly connected to the inner top wall of the worktable 10. A push plate 13 is fixedly connected to the output end of the electric push rod 12. Moving grooves are provided on both sides of the top of the worktable 10. A feeding mechanism 40 is slidably connected inside the moving groove. A stamping mechanism 50 is fixedly connected to the top of the housing 20.

[0036] First, one end of the sheet material to be stamped is placed on the first bending groove 31 and the second bending groove 32. Then, the stamping mechanism 50 performs the first stamping and bending of the sheet material. According to the shape of the first bending groove 31 and the second bending groove 32, the sheet material is bent into the required bending state. Then, the degree of bending of the sheet material can be shaped by the first bending groove 31 and the second bending groove 32.

[0037] Specifically, such as Figure 2 As shown, the stamping mechanism 50 includes a cylinder 51 mounted on the top of the housing 20. A shrink shell 52 is fixedly connected to the bottom of the cylinder 51. Push rods 53 pass through both sides of the top of the shrink shell 52. A first stamping block 54 and a second stamping block 55 are fixedly connected to the bottom of the two push rods 53 respectively. Springs 56 are sleeved on the surface of the two push rods 53. The tops of the first stamping block 54 and the second stamping block 55 are connected to the shrink shell 52 through the springs 56. An anti-tilting plate 57 is provided on one side of the first stamping block 54.

[0038] The length of the first stamping block 54 is less than the length of the second stamping block 55, and the first stamping block 54 and the second stamping block 55 are arranged in a stepped manner.

[0039] In more detail, when the sheet metal is initially stamped and bent, cylinder 51 starts, causing shrink shell 52 to descend. Then, the descending shrink shell 52 causes the first stamping block 54 and the second stamping block 55 to descend. Since the length of the first stamping block 54 is less than the length of the second stamping block 55, the second stamping block 55 will contact the sheet metal first. Then, the second stamping block 55 experiences resistance and compresses one of the springs 56 upwards until the bottom of the second stamping block 55 is at the same horizontal level as the first stamping block 54. 54 will also come into contact with the sheet metal. Finally, the second stamping block 55 and the first stamping block 54 simultaneously bend and press the sheet metal into the second bending groove 32 and the first bending groove 31, performing the initial bending of the sheet metal. When the first stamping block 54 descends to stamp and bend the sheet metal, the anti-warping plate 57 on one side of the first stamping block 54 will descend and press down along with the first stamping block 54. When the anti-warping plate 57 presses down, it will press down the part of the sheet metal that has not been stamped, preventing the part of the sheet metal that has not been stamped from warping up when the first stamping block 54 stamps.

[0040] After the initial stamping of the sheet metal is completed, the sheet metal is moved so that the portion of the sheet metal that has been bent in the first bending groove 31 is moved into the second bending groove 32. In this way, the sheet metal that has been bent in the second bending groove 32 is moved out of the lower mold 30, and at the same time, a portion of the sheet metal that has not been stamped is moved onto the first bending groove 31. Then, the stamping action of the first stamping block 54 and the second stamping block 55 is repeated. At this time, the first stamping block 54 can stamp and bend the portion of the sheet metal that has not been stamped on the first bending groove 31, while the second stamping block 55 will stamp and press into the second bending groove 32 again, which can re-press the sheet metal that has been stamped once inside the second bending groove 32. At the same time, the second stamping block 55 can work with the anti-warping plate 57 to position the two ends of the sheet metal to prevent the sheet metal from warping during stamping.

[0041] Specifically, such as Figure 3 , Figure 4 and Figure 5As shown, a motor 60 is fixedly connected to the inner bottom wall of the worktable 10. A lead screw 61 is connected to the output end of the motor 60. A crossbar is rotatably connected to the other end of the lead screw 61 through a bearing. Both ends of the crossbar are connected to the two sides of the inner wall of the worktable 10. The surface of the lead screw 61 is threadedly connected to the lifting frame 11.

[0042] The motor 60 starts and drives the lead screw 61 to rotate. Since the bottom of the lifting frame 11 is slidably connected to the inner bottom wall of the worktable 10, the lifting frame 11 can move horizontally when the lead screw 61 rotates.

[0043] Specifically, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the feeding mechanism 40 includes a lifting plate 41 slidably connected inside the moving groove. The lifting plate 41 has a lifting groove 42. A lifting plate 43 is slidably connected to one side of the lifting plate 41. One end of the lifting plate 43 is slidably connected to the push plate 13 through a T-groove. By horizontally pushing the push plate 13, the lifting plate 43 can move horizontally in the moving groove. One side of the two lifting plates 43 is in contact with both sides of the lower mold 30.

[0044] A positioning groove 431 is provided on one side of the top of the lifting plate 43, and a corrugated groove 432 adapted to the first bending groove 31 and the second bending groove 32 is provided on the positioning groove 431.

[0045] The width of the sheet metal to be stamped and bent shall not exceed the two corrugated grooves 432 on both sides at the edges, nor shall it be less than the distance between the two corrugated grooves 432. At the same time, the positioning groove 431 on the lifting plate 43 shall be used for positioning to prevent the sheet metal from shifting during a series of operations such as feeding, stamping and unloading, so that one side of the sheet metal exceeds the corrugated groove 432 on one side. The sheet metal shall be positioned and protected because when one side of the stamped sheet metal exceeds the side of the stamping die, the sheet metal is prone to distortion during stamping, forming a waste edge.

[0046] Two lifting plates 41 are symmetrically arranged, and two sliding rods 44 are provided on one side of the two lifting plates 41. When the lifting plates 41 are raised and lowered, the lifting plate 43 is raised and lowered together by the sliding rods 44.

[0047] Both sides of the inner wall of the lifting frame 11 are fixedly connected with sliders 14 that are adapted to the lifting groove 42. By moving the lifting frame 11 horizontally, the sliders 14 can slide inside the lifting groove 42. The sliding of the sliders 14 inside the lifting groove 42 can drive the lifting plate 41 and the lifting plate 43 to move up and down in the moving groove.

[0048] In more detail, when the lifting frame 11 moves horizontally, it drives the slider 14 to slide in the lifting groove 42. Since the lifting groove 42 is Z-shaped, when the slider 14 moves horizontally, it can lift the lifting plate 41 up and down. After the sheet metal completes the first stamping and bending, the horizontally moving lifting frame 11 drives the lifting plate 41 to rise through the slider 14. Then, when the lifting plate 41 rises, it drives the lifting plate 43 to rise. The lifting plates 43 on both sides of the sheet metal lift the sheet metal through the corrugated grooves 432 opened on them. Because after stamping, the sheet metal will have a slight elastic rebound. The rebound direction is to try to restore straightness. This will cause the opening angle of the corrugations to try to increase. When it tries to expand, the outer side of the corrugations will tightly stick to the inner wall of the first bending groove 31 and the second bending groove 32, generating huge friction and clamping force, and getting stuck in the first bending groove 31 and the second bending groove 32. So when the lifting plate 43 lifts the sheet metal through the corrugated grooves 432 opened on it, the sheet metal is stripped from the lower mold 30.

[0049] Then, after the lifting plate 43 lifts the sheet material, the electric push rod 12 pushes the push plate 13, and then the push plate 13 moves horizontally to push the lifting plates 43 on both sides to move horizontally, so that the part of the sheet material that is bent above the first bending groove 31 moves to the second bending groove 32, and the sheet material that is bent above the second bending groove 32 is removed from the lower mold 30, thereby completing the automatic feeding of the sheet material.

[0050] Finally, when the portion of the sheet metal bent above the first bending groove 31 moves to the second bending groove 32, the screw 61 reverses, causing the lifting frame 11 to move horizontally back. Then, the moving lifting frame 11 drives the lifting plate 41 to descend via the slider 14. The descending lifting plate 41 drives the lifting plate 43 until the highest point of the corrugated groove 432 is lower than the first bending groove 31 and the second bending groove 32, at which point the descent stops. At this time, the portion of the sheet metal bent above the second bending groove 32 falls into the second bending groove 32, while a portion of the sheet metal that has not been stamped moves to the first bending groove 31 to wait for stamping, thus completing the feeding and conveying of the sheet metal. Finally, the electric push rod 12 retracts, causing the lifting plate 41 and the lifting plate 43 to move back, and the screw 61 is rotated again to move the lifting frame 11 horizontally, causing the lifting plate 41 and the lifting plate 43 to rise and reset.

[0051] Specifically, such as Figure 1 and Figure 2 As shown, the first stamping block 54 and the second stamping block 55 are adapted to the first bending groove 31 and the second bending groove 32, and the thickness of the first stamping block 54 and the second stamping block 55 is adapted to the distance between the two positioning grooves 431.

[0052] The thickness and width of the first stamping block 54 and the second stamping block 55 at both sides of the edge do not exceed the corrugated grooves 432 on both sides, and are not less than the distance between the corrugated grooves 432 on both sides. If they exceed the corrugated grooves 432 on both sides, the first stamping block 54 and the second stamping block 55 cannot be embedded into the first bending groove 31 and the second bending groove 32 for stamping.

[0053] Operating steps:

[0054] First, one end of the sheet metal to be stamped is placed on the first bending groove 31 and the second bending groove 32. Then, the stamping mechanism 50 stamps and bends the sheet metal. According to the shape of the first bending groove 31 and the second bending groove 32, the sheet metal is bent into the required bending state, and the initial stamping is completed.

[0055] After the initial stamping is completed, the motor 60 starts to drive the lead screw 61 to rotate. Since the bottom of the lifting frame 11 is slidably connected to the inner bottom wall of the worktable 10, when the lead screw 61 rotates, it drives the lifting frame 11 to move horizontally. When the lifting frame 11 moves horizontally, it drives the slider 14 to slide in the lifting groove 42. When the slider 14 moves horizontally, it can lift the lifting plate 41 up and down. First, after the sheet metal completes the first stamping and bending, the horizontally moving lifting frame 11 drives the lifting plate 41 to rise through the slider 14. Then, when the lifting plate 41 rises, it drives the lifting plate 43 to rise. The lifting plates 43 on both sides of the sheet metal lift the sheet metal through the corrugated grooves 432 opened on them, so that the sheet metal is removed from the lower mold 30.

[0056] Then, after the lifting plate 43 lifts the sheet material, the electric push rod 12 pushes the push plate 13, and then the push plate 13 moves horizontally to push the lifting plates 43 on both sides to move horizontally, so that the part of the sheet material that is bent above the first bending groove 31 moves to the second bending groove 32, and the sheet material that is bent above the second bending groove 32 is removed from the lower mold 30, thereby completing the automatic feeding of the sheet material.

[0057] Finally, when the portion of the sheet metal bent above the first bending groove 31 moves to the second bending groove 32, the screw 61 reverses, causing the lifting frame 11 to move horizontally back. Then, the moving lifting frame 11 drives the lifting plate 41 to descend via the slider 14. The descending lifting plate 41 drives the lifting plate 43 until the highest point of the corrugated groove 432 is lower than the first bending groove 31 and the second bending groove 32, at which point the descent stops. At this time, the portion of the sheet metal bent above the second bending groove 32 falls into the second bending groove 32, while a portion of the sheet metal that has not been stamped moves to the first bending groove 31 to wait for stamping, thus completing the feeding and conveying of the sheet metal. Finally, the electric push rod 12 retracts, causing the lifting plate 41 and the lifting plate 43 to move back, and the screw 61 is rotated again to move the lifting frame 11 horizontally, causing the lifting plate 41 and the lifting plate 43 to rise and reset.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the present invention's technology and inventive concept, should be covered within the scope of protection of the present invention.

Claims

1. A continuous stamping equipment for processing metal sheets, comprising a worktable (10), wherein a housing (20) is fixedly connected to the worktable (10) and a lower die (30) is fixedly connected to the middle of the upper surface of the worktable (10), characterized in that, The bottom wall of the workbench (10) is slidably connected to a lifting frame (11), the top wall of the workbench (10) is fixedly connected to an electric push rod (12), the output end of the electric push rod (12) is fixedly connected to a push plate (13), both sides of the top of the workbench (10) are provided with moving slots, the inside of the moving slots is slidably connected to a feeding mechanism (40), and the top of the outer shell (20) is fixedly connected to a stamping mechanism (50). The feeding mechanism (40) includes a lifting plate (41) slidably connected inside the moving groove. The lifting plate (41) has a lifting groove (42). A lifting plate (43) is slidably connected to one side of the lifting plate (41). One end of the lifting plate (43) is slidably connected to the push plate (13) through a T-groove. The lifting plate (43) can be moved horizontally in the moving groove by pushing the push plate (13) horizontally. One side of the two lifting plates (43) is in contact with both sides of the lower mold (30). Both sides of the inner wall of the lifting frame (11) are fixedly connected with sliders (14) that are compatible with the lifting groove (42). By moving the lifting frame (11) horizontally, the sliders (14) can slide inside the lifting groove (42). The sliders (14) sliding inside the lifting groove (42) can drive the lifting plate (41) and the lifting plate (43) to move up and down in the moving groove. The lower mold (30) is provided with a first bending groove (31) and a second bending groove (32); The lifting plate (43) has a positioning groove (431) on one side of its top, and the positioning groove (431) has a corrugated groove (432) that is compatible with the first bending groove (31) and the second bending groove (32). The stamping mechanism (50) includes a cylinder (51) installed on the top of the housing (20). A shrink shell (52) is fixedly connected to the bottom of the cylinder (51). A push rod (53) passes through both sides of the top of the shrink shell (52). A first stamping block (54) and a second stamping block (55) are fixedly connected to the bottom of the two push rods (53). A spring (56) is sleeved on the surface of the two push rods (53). The tops of the first stamping block (54) and the second stamping block (55) are connected to the shrink shell (52) through the spring (56). An anti-pry plate (57) is provided on one side of the first stamping block (54). The length of the first stamping block (54) is less than the length of the second stamping block (55), and the first stamping block (54) and the second stamping block (55) are arranged in a stepped manner; Two lifting plates (41) are symmetrically arranged, and two sliding rods (44) are provided on one side of the two lifting plates (41). When the lifting plates (41) move up and down, the lifting plate (43) moves up and down together through the sliding rods (44).

2. The continuous stamping equipment for processing metal sheets according to claim 1, characterized in that, A motor (60) is fixedly connected to the inner bottom wall of the workbench (10). The output end of the motor (60) is connected to a lead screw (61). The other end of the lead screw (61) is rotatably connected to a crossbar through a bearing. The two ends of the crossbar are connected to the two sides of the inner wall of the workbench (10). The surface of the lead screw (61) is threadedly connected to the lifting frame (11).

3. The continuous stamping equipment for processing metal sheets according to claim 1, characterized in that, The first stamping block (54) and the second stamping block (55) are adapted to the first bending groove (31) and the second bending groove (32), and the thickness of the first stamping block (54) and the second stamping block (55) is adapted to the distance between the two positioning grooves (431).

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