Sheet material limiting mechanism of sheet metal bending machine

Abstract

The utility model relates to the field of bending machine discloses a sheet material limiting mechanism of metal plate bending machine, including base, the top fixed coupling of base has portal frame and lower mould, the top fixed coupling of portal frame has hydraulic cylinder, the output shaft fixed coupling of hydraulic cylinder has upper die, the top fixed coupling of base has two air cylinders, the output shaft fixed coupling of two air cylinders has removal box, the top sliding of removal box is provided with two moving plates, removal box with between two moving plates is provided with front -and -rear limiting mechanism, be provided with up and down limiting mechanism on moving plate, the front side fixed coupling of portal frame has controller. The utility model has the following advantages and effect: not only can the front and rear limit of sheet material, and can the up and down limit of sheet material, make sheet material limiting effect better, avoid the sheet material and influence bending processing's precision to take place and go up and rise.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, and in particular to a sheet metal limiting mechanism for a metal sheet bending machine. Background Technology

[0002] A bending machine is a machine that can bend thin plates. It is an important piece of equipment in the sheet metal industry for bending and forming workpieces. Its function is to press steel plates into parts of various shapes according to process requirements.

[0003] A search revealed a limiting clamping mechanism for a bending machine, Chinese Patent No. CN219664807U, comprising a worktable, a support on the upper surface of the worktable, a hydraulic cylinder mounted on the support, a linkage plate connected to the piston rod of the hydraulic cylinder, both ends of the linkage plate being movably connected to the support, an upper bending die mounted on the linkage plate, a lower bending die positioned below the upper bending die, the lower bending die being positioned on the worktable, and a limiting clamping assembly located on one side of the lower bending die, the limiting clamping assembly being used to clamp the sheet metal and limit its movement.

[0004] However, the limiting clamping mechanism of the bending machine mentioned above can only limit the front and back of the sheet metal, and it is inconvenient to limit the up and down of the sheet metal. The sheet metal is prone to warping upwards, which affects the accuracy of the bending process. Therefore, we propose a sheet metal limiting mechanism for a metal sheet bending machine to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a sheet metal limiting mechanism for a metal sheet bending machine, which can limit the sheet metal not only in the front and back but also in the up and down direction, thus improving the limiting effect and preventing the sheet metal from warping upwards and affecting the bending accuracy.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a sheet metal bending machine sheet limiting mechanism, including a base, a gantry frame and a lower die fixedly connected to the top of the base, a hydraulic cylinder fixedly connected to the top of the gantry frame, an upper die fixedly connected to the output shaft of the hydraulic cylinder, two air cylinders fixedly connected to the top of the base, a movable box fixedly connected to the output shaft of the two air cylinders, two movable plates slidably arranged on the top of the movable box, a front and rear limiting mechanism is provided between the movable box and the two movable plates, an upper and lower limiting mechanism is provided on the movable plates, and a controller is fixedly connected to the front side of the gantry frame.

[0007] A further feature of this invention is that a groove is provided on the top of the base, and a slider is slidably fitted inside the groove, the slider being fixedly connected to the bottom of the mobile box.

[0008] By adopting the above technical solution, the mobile box can be guided, making its movement more stable.

[0009] A further feature of this invention is that the front and rear limiting mechanism includes a drive motor fixedly connected to one side of the movable box, and a bidirectional lead screw rotatably connected to the inner walls of the front and rear sides of the movable box. A driving bevel gear is fixedly connected to the output shaft of the drive motor. A driven bevel gear is threaded onto the outer side of the bidirectional lead screw. The driving bevel gear meshes with the driven bevel gear. Two drive plates are threaded onto the outer side of the bidirectional lead screw. The two drive plates are respectively fixedly connected to the bottom of the corresponding movable plates. An installation groove is provided on the side of the two movable plates that are close to each other. Three lower guide rollers are rotatably connected to the upper and lower inner walls of the installation groove.

[0010] By adopting the above technical solution, two cylinders are activated by the controller according to the length of the metal sheet to be bent. The two cylinders drive the lateral movement of the moving box, thereby adjusting the distance between the moving box and the lower die. This allows for the limiting of metal sheets of different lengths, improving the practicality of the device. The drive motor drives the rotation of the active bevel gear, which in turn drives the rotation of the driven bevel gear and the double-acting screw. The double-acting screw causes the two drive plates and the moving plate to move closer to each other, so that the lower guide rollers on the front and rear sides abut against the front and rear sides of the metal sheet. This achieves the purpose of front and rear limiting of metal sheets of different widths.

[0011] A further feature of this invention is that the top of the mobile box has a rectangular opening, and both drive plates are slidably fitted inside the rectangular opening. The same corrugated rubber pad is fixedly connected between the two drive plates and between the drive plates and the rectangular opening.

[0012] By adopting the above technical solution, the corrugated rubber pad can deform as the drive plate moves, thus always blocking and sealing the rectangular opening and preventing debris from splashing into the moving box during bending and affecting the normal operation of the threaded connection between the bidirectional lead screw and the drive plate.

[0013] A further feature of this invention is that two guide rods are fixedly connected to the inner walls of the front and rear sides of the mobile box, and two drive plates are slidably sleeved on the outer sides of the two guide rods.

[0014] By adopting the above technical solution, the drive board can be guided, making its movement more stable.

[0015] A further feature of this invention is that the upper and lower limiting mechanism includes a groove formed on the inner side of the movable plate, a vertical lead screw rotatably connected to the upper and lower inner walls of the groove, a nut threaded on the outer side of the vertical lead screw, a lifting plate fixedly fitted on the outer side of the nut, a connecting plate fixedly connected to the inner side of the lifting plate, a guide groove formed at the bottom of the connecting plate, and three upper guide rollers rotatably connected to the front and rear inner walls of the guide groove.

[0016] By adopting the above technical solution, rotating the vertical screw causes the nut and lifting plate to move downwards. The lifting plate then causes the connecting plate and the upper guide roller to move downwards and abut against the top of the metal sheet. This limits the vertical movement of the metal sheet, preventing it from warping upwards during bending and affecting the bending quality. Finally, the hydraulic cylinder drives the upper die to move downwards, and with the cooperation of the lower die, the metal sheet can be bent.

[0017] A further feature of this invention is that a handwheel is fixedly connected to the top of the vertical lead screw, and the lifting plate is slidably sleeved in the groove.

[0018] By adopting the above technical solution, it is convenient to rotate the vertical screw and to guide and limit the lifting plate.

[0019] A further feature of this invention is that two round rods are slidably connected to the top of the gantry frame, and both round rods are fixedly connected to the top of the upper mold.

[0020] By adopting the above technical solution, it is easier to guide the upper mold, making its lifting and lowering more stable.

[0021] The beneficial effects of this utility model are:

[0022] This invention utilizes a controller to activate two cylinders based on the length of the metal sheet to be bent. These cylinders drive the lateral movement of the moving box, thereby adjusting the distance between the moving box and the lower die. This allows for the limiting of metal sheets of different lengths, improving the practicality of the device. A drive motor rotates the active bevel gear, which in turn rotates the driven bevel gear and the bidirectional lead screw. The bidirectional lead screw causes the two drive plates and the moving plate to move closer together, resulting in the lower guide rollers on the front and rear sides contacting the front and rear sides of the metal sheet. This allows for the front and rear limiting of metal sheets of different widths.

[0023] This invention features a rotating vertical lead screw, which drives the nut and lifting plate to move downwards. The lifting plate then drives the connecting plate and the upper guide roller to move downwards and abut against the top of the metal sheet. This allows for vertical positioning of the metal sheet, preventing it from warping upwards during bending and affecting the bending quality.

[0024] 3. This utility model uses a hydraulic cylinder to drive the upper mold to move downwards, and with the cooperation of the lower mold, it can perform bending operations on metal sheets. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the sheet metal limiting mechanism of a metal sheet bending machine proposed in this utility model;

[0027] Figure 2 This is a cross-sectional view of the moving box of the sheet metal limiting mechanism of a metal sheet bending machine proposed in this utility model.

[0028] Figure 3 for Figure 2 A schematic diagram of the structure of part A;

[0029] Figure 4 This is a side sectional view of the moving plate of the sheet metal limiting mechanism of a metal sheet bending machine proposed in this utility model.

[0030] In the diagram, 1. Base; 2. Gantry frame; 3. Hydraulic cylinder; 4. Round rod; 5. Controller; 6. Lower mold; 7. Upper mold; 8. Front and rear limit mechanisms; 9. Upper and lower limit mechanisms; 10. Moving box; 11. Cylinder; 12. Slide groove; 13. Slider; 81. Moving plate; 82. Mounting groove; 83. Lower guide roller; 84. Drive motor; 85. Drive plate; 86. Corrugated rubber pad; 87. Driving bevel gear; 88. Bidirectional lead screw; 89. Driven bevel gear; 810. Guide rod; 811. Rectangular opening; 91. Handwheel; 92. Vertical lead screw; 93. Nut; 94. Lifting plate; 95. Groove; 96. Connecting plate; 97. Guide groove; 98. Upper guide roller. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] See Figure 1 — Figure 4This utility model provides a sheet metal limiting mechanism for a metal sheet bending machine, including a base 1. A gantry frame 2 and a lower die 6 are fixedly connected to the top of the base 1. A hydraulic cylinder 3 is fixedly connected to the top of the gantry frame 2. An upper die 7 is fixedly connected to the output shaft of the hydraulic cylinder 3. Two cylinders 11 are fixedly connected to the top of the base 1. A movable box 10 is fixedly connected to the output shaft of the two cylinders 11. Two movable plates 81 are slidably arranged on the top of the movable box 10. A front and rear limiting mechanism 8 is provided between the movable box 10 and the two movable plates 81. An upper and lower limiting mechanism 9 is provided on the movable plates 81. A controller 5 is fixedly connected to the front side of the gantry frame 2.

[0033] Specifically, a groove 12 is provided on the top of the base 1, and a slider 13 is slidably fitted inside the groove 12. The slider 13 is fixedly connected to the bottom of the movable box 10.

[0034] Specifically, the front and rear limiting mechanism 8 includes a drive motor 84 fixedly connected to one side of the movable box 10, and a bidirectional lead screw 88 rotatably connected to the inner walls of the front and rear sides of the movable box 10. A drive bevel gear 87 is fixedly connected to the output shaft of the drive motor 84. A driven bevel gear 89 is threaded on the outer side of the bidirectional lead screw 88. The drive bevel gear 87 and the driven bevel gear 89 mesh with each other. Two drive plates 85 are threaded on the outer side of the bidirectional lead screw 88. The two drive plates 85 are respectively fixedly connected to the bottom of the corresponding movable plate 81.

[0035] Specifically, each of the two movable plates 81 has a mounting groove 82 on one side that is close to each other, and three lower guide rollers 83 are rotatably connected to the upper and lower inner walls of the mounting groove 82.

[0036] Specifically, the top of the mobile box 10 has a rectangular opening 811, and two drive plates 85 are slidably fitted inside the rectangular opening 811. The same corrugated rubber pad 86 is fixedly connected between the two drive plates 85 and between the drive plates 85 and the rectangular opening 811.

[0037] Specifically, two guide rods 810 are fixedly connected to the inner walls of the front and rear sides of the movable box 10, and two drive plates 85 are slidably sleeved on the outer side of the two guide rods 810.

[0038] Specifically, the upper and lower limit mechanism 9 includes a groove 95 opened inside the movable plate 81, a vertical screw rod 92 rotatably connected to the upper and lower inner walls of the groove 95, a nut 93 threaded on the outer side of the vertical screw rod 92, a lifting plate 94 fixedly sleeved on the outer side of the nut 93, and a connecting plate 96 fixedly connected to the inner side of the lifting plate 94.

[0039] Specifically, a guide groove 97 is provided at the bottom of the connecting plate 96, and three upper guide rollers 98 are rotatably connected to the inner walls of the front and rear sides of the guide groove 97.

[0040] Specifically, a handwheel 91 is fixedly connected to the top of the vertical lead screw 92, and the lifting plate 94 is slidably sleeved in the groove 95.

[0041] Specifically, the top of the gantry 2 is slidably connected to two round rods 4, both of which are fixedly connected to the top of the upper mold 7.

[0042] In this invention, during use, two cylinders 11 are activated by the controller 5 according to the length of the metal sheet to be bent. The two cylinders 11 drive the lateral movement of the moving box 10, thereby adjusting the distance between the moving box 10 and the lower die 6 to limit the use of metal sheets of different lengths, improving the practicality of the device. The drive motor 84 drives the rotation of the active bevel gear 87, which in turn drives the rotation of the driven bevel gear 89 and the bidirectional lead screw 88. The bidirectional lead screw 88 drives the two drive plates 85 and the moving plate 81 to move closer to each other, so that the lower guide rollers 83 on the front and rear sides abut against the front and rear sides of the metal sheet, thereby achieving the purpose of front and rear limiting of metal sheets of different widths. The corrugated rubber pad 86 is set so that it can deform with the movement of the drive plate 85, so that it always blocks and seals the rectangular opening 811, preventing debris from splashing into the moving box 10 during bending and affecting the normal operation of the threaded connection between the bidirectional lead screw 88 and the drive plate 85.

[0043] By rotating the vertical screw 92 via the handwheel 91, the vertical screw 92 causes the nut 93 and the lifting plate 94 to move downwards. The lifting plate 94 then causes the connecting plate 96 and the upper guide roller 98 to move downwards and come into contact with the top of the metal sheet. This limits the vertical movement of the metal sheet, preventing it from warping upwards during bending and affecting the bending quality. Finally, the hydraulic cylinder 3 drives the upper die 7 to move downwards. With the cooperation of the lower die 6, the metal sheet can be bent.

Claims

1. A sheet metal limiting mechanism for a metal sheet bending machine, characterized in that, The system includes a base (1), a gantry frame (2) and a lower mold (6) are fixedly connected to the top of the base (1), a hydraulic cylinder (3) is fixedly connected to the top of the gantry frame (2), an upper mold (7) is fixedly connected to the output shaft of the hydraulic cylinder (3), two cylinders (11) are fixedly connected to the top of the base (1), a movable box (10) is fixedly connected to the output shaft of the two cylinders (11), two movable plates (81) are slidably arranged on the top of the movable box (10), a front and rear limiting mechanism (8) is provided between the movable box (10) and the two movable plates (81), an upper and lower limiting mechanism (9) is provided on the movable plates (81), and a controller (5) is fixedly connected to the front side of the gantry frame (2).

2. The sheet metal limiting mechanism of a metal sheet bending machine according to claim 1, characterized in that: The top of the base (1) is provided with a groove (12), and a slider (13) is slidably sleeved in the groove (12). The slider (13) is fixedly connected to the bottom of the mobile box (10).

3. The sheet metal limiting mechanism of a metal sheet bending machine according to claim 1, characterized in that: The front and rear limiting mechanism (8) includes a drive motor (84) fixedly connected to one side of the movable box (10) and a bidirectional lead screw (88) rotatably connected to the inner walls of the front and rear sides of the movable box (10). A drive bevel gear (87) is fixedly connected to the output shaft of the drive motor (84). A driven bevel gear (89) is threaded on the outer side of the bidirectional lead screw (88). The drive bevel gear (87) meshes with the driven bevel gear (89). Two drive plates (85) are threaded on the outer side of the bidirectional lead screw (88). The two drive plates (85) are fixedly connected to the bottom of the corresponding movable plate (81).

4. The sheet metal limiting mechanism of a metal sheet bending machine according to claim 1, characterized in that: The two movable plates (81) are provided with mounting grooves (82) on the side that are close to each other, and three lower guide rollers (83) are rotatably connected to the upper and lower inner walls of the mounting grooves (82).

5. The sheet metal limiting mechanism of a metal sheet bending machine according to claim 3, characterized in that: The top of the mobile box (10) has a rectangular opening (811), and two drive plates (85) are slidably fitted inside the rectangular opening (811). The same corrugated rubber pad (86) is fixedly connected between the two drive plates (85) and between the drive plates (85) and the rectangular opening (811).

6. The sheet metal limiting mechanism of a metal sheet bending machine according to claim 3, characterized in that: Two guide rods (810) are fixedly connected to the inner walls of the front and rear sides of the mobile box (10), and two drive plates (85) are slidably sleeved on the outside of the two guide rods (810).

7. The sheet metal limiting mechanism of a metal sheet bending machine according to claim 1, characterized in that: The upper and lower limiting mechanism (9) includes a groove (95) opened on the inner side of the moving plate (81). A vertical screw rod (92) is rotatably connected to the upper and lower inner walls of the groove (95). A nut (93) is threaded on the outer side of the vertical screw rod (92). A lifting plate (94) is fixedly sleeved on the outer side of the nut (93). A connecting plate (96) is fixedly connected to the inner side of the lifting plate (94).

8. The sheet metal limiting mechanism of a metal sheet bending machine according to claim 7, characterized in that: The bottom of the connecting plate (96) is provided with a guide groove (97), and three upper guide rollers (98) are rotatably connected to the inner walls of the front and rear sides of the guide groove (97).

9. The sheet metal limiting mechanism of a metal sheet bending machine according to claim 7, characterized in that: The top end of the vertical lead screw (92) is fixedly connected to a handwheel (91), and the lifting plate (94) is slidably sleeved in the groove (95).

10. The sheet metal limiting mechanism of a metal sheet bending machine according to claim 1, characterized in that: The top of the gantry (2) is slidably connected to two round rods (4), both of which are fixedly connected to the top of the upper mold (7).

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