Sheet metal bending device

Abstract

The utility model relates to the technical field of sheet metal bending, in particular to a sheet metal bending device which comprises a workbench, the upper end face of the workbench is fixedly connected with a die base, the upper end face of the die base is provided with two arc-shaped grooves distributed left and right, and the interiors of the arc-shaped grooves are connected with rotating low blocks in a sliding mode. A movable plate is matched with a plurality of elastic telescopic rods to drive two connecting plates to move downwards, the connecting plates drive rotating pressing blocks to move downwards, meanwhile, the movable plate drives an extrusion plate to move downwards, in the downward moving process of the rotating pressing blocks and the extrusion plate, the rotating pressing blocks abut against the sheet metal, and the sheet metal is limited and fixed through the two rotating pressing blocks; then, the moving plate continues to move, the moving plate extrudes the elastic telescopic rod to contract, and meanwhile, an extrusion plate moves downwards to extrude and bend the sheet metal plate; in the bending process, the two rotating low blocks rotate, so that the two rotating low blocks rotate along with the bending angle of the sheet metal plate, and friction between the sheet metal plate and the two rotating low blocks is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of thin plate sheet metal bending, in particular to a thin plate sheet metal bending device. Background Technique

[0002] Sheet metal bending is a processing process in which a metal sheet is changed from a flat sheet to a three-dimensional product through a pressing device and a mold. With the development of the times, the shapes of sheet metal products are more diverse, which puts forward new requirements for sheet metal equipment and molds. At the same time, it is required that the quality of the sheet metal products after bending is higher.

[0003] During the use of the existing thin plate sheet metal bending device, most of them limit the sheet metal manually. However, during the bending process, the sheet metal will be bent and deformed, resulting in slight deviation and dislocation of the sheet metal during the extrusion process, which will affect the bending effect of the sheet metal. At the same time, the existing bending mold is a fixed structure. During the sheet metal bending process, the sheet metal will rub against the mold, resulting in scratches at the contact area between the sheet metal and the mold, affecting the appearance of the sheet metal after bending. Content of the Utility Model

[0004] The purpose of the utility model is to provide a thin plate sheet metal bending device, which has the characteristics of being convenient for limiting the sheet metal and avoiding scratches at the contact area between the sheet metal and the mold.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a thin plate sheet metal bending device, including a workbench, the upper end surface of the workbench is fixedly connected with a mold base, two arc-shaped grooves distributed left and right are opened on the upper end surface of the mold base, and a rotating low block is slidably connected inside the arc-shaped groove;

[0006] The left end of the upper end surface of the workbench is fixedly connected with an L-shaped mounting plate. A moving plate is arranged between the mounting plate and the mold base. Two connecting plates distributed left and right are arranged below the moving plate. Two elastic telescopic rods distributed front and back are fixedly connected between the connecting plate and the moving plate. The lower end surface of the connecting plate is rotatably connected with a rotating pressing block. The lower end surface of the moving plate is fixedly connected with an extrusion plate located between a plurality of elastic telescopic rods and matching with the mold base;

[0007] A positioning plate is slidably connected to the upper end surface of the workbench on the left side of the mold base, and an adjusting mechanism is arranged between the workbench and the positioning plate.

[0008] In order to adjust the position of the positioning plate, as an optimization of a thin plate sheet metal bending device of the present utility model, the adjusting mechanism includes a plurality of chutes opened on the upper end surface of the workbench and distributed front and back. A plurality of sliders matching the chutes are fixedly connected to the lower end surface of the positioning plate. A sliding hole communicating with the front chute is penetrated through the front end surface of the workbench. A measuring rod is fixedly connected to the front end surface of the front slider, and the other end of the measuring rod extends to the front of the workbench through the sliding hole.

[0009] In order to drive the two rotating low blocks to reset, as an optimization of a thin plate sheet metal bending device of the present utility model, a plurality of notches distributed front and back are opened on both the left and right side walls of the mold base. Connecting blocks and support plates are respectively fixedly connected to one side of the outer walls of the two rotating low blocks facing away from each other. Springs are fixedly connected between the connecting blocks and support plates and the plurality of notches.

[0010] In order to drive the slider to move, as an optimization of a thin plate sheet metal bending device of the present utility model, a lead screw threadedly connected to the slider is rotatably connected inside the middle chute. A motor is installed inside the workbench, and the output end of the motor is fixedly connected to the lead screw.

[0011] In order to drive the moving plate to move, as an optimization of a thin plate sheet metal bending device of the present utility model, a telescopic cylinder is installed on the upper end surface of the mounting plate. The output end of the telescopic cylinder extends below the mounting plate and is fixedly connected to the moving plate.

[0012] In order to limit the rotating low block, as an optimization of a thin plate sheet metal bending device of the present utility model, a plurality of uniformly distributed limiting grooves are opened on the inner wall of the arc-shaped groove. A limiting strip matching the limiting groove is fixedly connected to the outer wall of the rotating low block.

[0013] In order to facilitate the precise adjustment of the position of the positioning plate, as an optimization of a thin plate sheet metal bending device of the present utility model, scale lines are provided on the front end surface of the workbench.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The telescopic cylinder drives the moving plate to move downward. The moving plate cooperates with a plurality of elastic telescopic rods to drive the two connecting plates to move downward. The connecting plates drive the rotating pressing block to move downward. At the same time, the moving plate drives the pressing plate to move downward. During the downward movement of the rotating pressing block and the pressing plate, the rotating pressing block first abuts against the thin plate sheet metal, and the thin plate sheet metal is limited and fixed by the two rotating pressing blocks to prevent slight deviation and dislocation of the thin plate sheet metal during the extrusion process. Then the moving plate continues to move, the moving plate squeezes the elastic telescopic rods to contract, and at the same time, the thin plate sheet metal is extruded and bent by the downward movement of the pressing plate;

[0016] During the bending process, the two rotating lower blocks rotate, causing the two rotating lower blocks to rotate following the bending angle of the thin sheet metal, preventing friction between the thin sheet metal and the two rotating lower blocks and resulting in scratches at the contact position between the thin sheet metal and the rotating lower blocks. Brief Description of the Drawings

[0017] Figure 1 Schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 Schematic diagram of the front view sectional structure of the present utility model;

[0019] Figure 3 Schematic diagram of the top view sectional structure of the present utility model;

[0020] Figure 4 Schematic diagram of the front view bending state sectional structure of the present utility model;

[0021] Figure 5 For the present utility model Figure 2 Schematic diagram of the enlarged structure of part a;

[0022] In the figure: 1, workbench; 2, mold base; 3, arc groove; 4, rotating lower block; 5, mounting plate; 6, moving plate; 7, connecting plate; 8, elastic telescopic rod; 9, rotating pressing block; 10, positioning plate; 11, chute; 12, slider; 13, sliding hole; 14, measuring rod; 15, notch; 16, connecting block; 17, support plate; 18, spring; 19, lead screw; 20, motor; 21, telescopic cylinder; 22, limiting groove; 23, limiting strip; 24, scale line; 25, pressing plate. Detailed Description of the Preferred Embodiment

[0023] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, in the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0024] Please refer to Figures 1 to 5, a thin plate sheet metal bending device, including a workbench 1, the upper end surface of the workbench 1 is fixedly connected with a die seat 2, two arc-shaped grooves 3 distributed left and right are opened on the upper end surface of the die seat 2, and a rotating low block 4 is slidably connected inside the arc-shaped groove 3;

[0025] The left end of the upper end surface of the workbench 1 is fixedly connected with an L-shaped mounting plate 5, a moving plate 6 is arranged between the mounting plate 5 and the die seat 2, two connecting plates 7 distributed left and right are arranged below the moving plate 6, and two elastic telescopic rods 8 distributed front and back are fixedly connected between the connecting plates 7 and the moving plate 6. The lower end surface of the connecting plate 7 is rotatably connected with a rotating pressing block 9, and the lower end surface of the moving plate 6 is fixedly connected with an extrusion plate 25 located between a plurality of elastic telescopic rods 8 and matching with the die seat 2;

[0026] The upper end surface of the workbench 1 is slidably connected with a positioning plate 10 located on the left side of the die seat 2, and an adjusting mechanism is arranged between the workbench 1 and the positioning plate 10.

[0027] In this embodiment: during use, the thin plate sheet metal is moved between the die seat 2 and the rotating pressing block 9, so that the bending end of the thin plate sheet metal abuts against the positioning plate 10, and the thin plate sheet metal is positioned by the positioning plate 10, which is convenient for aligning the bending line of the thin plate sheet metal with the center line of the die seat 2, and then the lower end surface of the thin plate sheet metal abuts against the two rotating low blocks 4;

[0028] After the preparation is completed, the moving plate 6 moves downward, the moving plate 6 drives the two connecting plates 7 to move downward in cooperation with a plurality of elastic telescopic rods 8, the connecting plates 7 drive the rotating pressing block 9 to move downward. At the same time, the moving plate 6 drives the extrusion plate 25 to move downward. During the downward movement of the rotating pressing block 9 and the extrusion plate 25, the rotating pressing block 9 first abuts against the thin plate sheet metal, and the thin plate sheet metal is limited and fixed by the two rotating pressing blocks 9 to prevent the thin plate sheet metal from being slightly offset and misaligned during the extrusion process. Then the moving plate 6 continues to move, the moving plate 6 squeezes the elastic telescopic rods 8 to contract, and at the same time, the thin plate sheet metal is squeezed and bent by the downward movement of the extrusion plate 25;

[0029] During the bending process, the two rotating low blocks 4 rotate, so that the two rotating low blocks 4 rotate following the bending angle of the thin plate sheet metal, preventing friction between the thin plate sheet metal and the two rotating low blocks 4, resulting in scratches at the abutting position of the thin plate sheet metal and the rotating low blocks 4.

[0030] As a technical optimization scheme of the present utility model, the adjusting mechanism includes a plurality of sliding grooves 11 opened on the upper end surface of the workbench 1 and distributed front and back. The lower end surface of the positioning plate 10 is fixedly connected with a plurality of sliders 12 matching with the sliding grooves 11. The front end surface of the workbench 1 is penetrated with a sliding hole 13 communicating with the sliding groove 11 located in the front. The front end surface of the slider 12 located in the front is fixedly connected with a measuring rod 14, and the other end of the measuring rod 14 extends to the front of the workbench 1 through the sliding hole 13.

[0031] In this embodiment, when adjusting the position of the positioning plate 10, the slider 12 drives the positioning plate 10 to move. At the same time, the slider 12 drives the measuring rod 14 to move in the sliding hole 13, thereby adjusting the position of the positioning plate 10. Through the mutual cooperation between the measuring rod 14 and the scale line 24, it is convenient to accurately adjust the position of the positioning plate 10, and it is convenient for the positioning plate 10 to position the thin sheet metal at different bending positions.

[0032] As a technical optimization scheme of the present utility model, a plurality of notches 15 distributed front and back are provided on the left and right side walls of the mold base 2. One side of the outer walls of the two rotating low blocks 4 facing away from each other is respectively fixedly connected with a connecting block 16 and a support plate 17. Springs 18 are fixedly connected between the connecting block 16 and the support plate 17 and the plurality of notches 15.

[0033] In this embodiment, the notch 15 can hide the spring 18, and the support plate 17 can support the thin sheet metal. Through the mutual cooperation between the spring 18 and the connecting block 16 and the support plate 17, the two rotating low blocks 4 can be driven to reset.

[0034] As a technical optimization scheme of the present utility model, a lead screw 19 threadedly connected to the slider 12 is rotatably connected inside the middle sliding groove 11, and a motor 20 is installed inside the workbench 1. The output end of the motor 20 is fixedly connected to the lead screw 19.

[0035] In this embodiment, when the motor 20 is started, the motor 20 drives the lead screw 19 to rotate, and the lead screw 19 drives the slider 12 to move.

[0036] As a technical optimization scheme of the present utility model, a telescopic cylinder 21 is installed on the upper end surface of the mounting plate 5, and the output end of the telescopic cylinder 21 extends below the mounting plate 5 and is fixedly connected to the moving plate 6.

[0037] In this embodiment, the telescopic cylinder 21 can drive the moving plate 6 to move.

[0038] As a technical optimization scheme of the present utility model, a plurality of uniformly distributed limiting grooves 22 are provided on the inner wall of the arc-shaped groove 3, and a limiting strip 23 matching the limiting grooves 22 is fixedly connected to the outer wall of the rotating low block 4.

[0039] In this embodiment, the limiting grooves 22 and the limiting strips 23 can limit the rotating low block 4 while enabling the rotating low block 4 to rotate smoothly.

[0040] As a technical optimization scheme of the present utility model, a scale line 24 is provided on the front end surface of the workbench 1.

[0041] In this embodiment, the scale line 24 is convenient for accurately adjusting the position of the positioning plate 10.

[0042] Working principle: When in use, move the thin sheet metal to between the mold base 2 and the rotating pressing block 9, make the bent end of the thin sheet metal abut against the positioning plate 10, position the thin sheet metal through the positioning plate 10, so as to facilitate aligning the bending line of the thin sheet metal with the center line of the mold base 2, and then make the lower end surface of the thin sheet metal abut against the two rotating low blocks 4;

[0043] After preparation is completed, start the telescopic cylinder 21. The telescopic cylinder 21 drives the moving plate 6 to move downward. The moving plate 6 cooperates with multiple elastic telescopic rods 8 to drive the two connecting plates 7 to move downward. The connecting plates 7 drive the rotating pressing block 9 to move downward. At the same time, the moving plate 6 drives the pressing plate 25 to move downward. During the downward movement of the rotating pressing block 9 and the pressing plate 25, the rotating pressing block 9 first abuts against the thin sheet metal, and the thin sheet metal is limited and fixed by the two rotating pressing blocks 9 to prevent slight deviation and dislocation of the thin sheet metal during the extrusion process. Then the moving plate 6 continues to move, the moving plate 6 squeezes the elastic telescopic rods 8 to contract, and at the same time, the thin sheet metal is extruded and bent by the downward movement of the pressing plate 25;

[0044] During the bending process, the two rotating low blocks 4 rotate, so that the two rotating low blocks 4 rotate following the bending angle of the thin sheet metal, preventing friction between the thin sheet metal and the two rotating low blocks 4, resulting in scratches at the abutting position between the thin sheet metal and the rotating low blocks 4;

[0045] When adjusting the position of the positioning plate 10, start the motor 20. The motor 20 drives the lead screw 19 to rotate. The lead screw 19 drives the slider 12 to move. The slider 12 drives the positioning plate 10 to move. At the same time, the slider 12 drives the measuring rod 14 to move in the sliding hole 13, thereby adjusting the position of the positioning plate 10. Through the mutual cooperation between the measuring rod 14 and the scale line 24, it is convenient to accurately adjust the position of the positioning plate 10, facilitating the positioning of the thin sheet metal at different bending positions by the positioning plate 10.

[0046] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A thin sheet metal bending device, comprising a workbench (1), characterized in that: The upper end surface of the workbench (1) is fixedly connected to a mold base (2), the upper end surface of the mold base (2) is provided with two arc grooves (3) distributed on the left and right, and a rotating lower block (4) is slidably connected inside the arc groove (3); An L-shaped mounting plate (5) is fixedly connected to the left end of the upper end surface of the workbench (1); a movable plate (6) is arranged between the mounting plate (5) and the mold base (2); two connecting plates (7) distributed on the left and right are arranged below the movable plate (6); two elastic telescopic rods (8) distributed front and back are fixedly connected between the connecting plate (7) and the movable plate (6); and a rotating pressing block (9) is rotatably connected to the lower end surface of the connecting plate (7); The lower end surface of the movable plate (6) is fixedly connected with an extrusion plate (25) located between a plurality of elastic telescopic rods (8) and matching the mold base (2); The upper end surface of the workbench (1) is slidably connected to a positioning plate (10) located on the left side of the mold base (2), and an adjustment mechanism is provided between the workbench (1) and the positioning plate (10).

2. The thin plate sheet metal bending device according to claim 1, characterized in that: The adjustment mechanism comprises a plurality of slide grooves (11) which are provided on the upper end surface of the workbench (1) and are distributed front and back; a plurality of slide blocks (12) which match the slide grooves (11) are fixedly connected to the lower end surface of the positioning plate (10); a slide hole (13) which is connected to the slide grooves (11) located in the front is penetrated through the front end surface of the workbench (1); a measuring rod (14) is fixedly connected to the front end surface of the slide block (12) located in the front; and the other end of the measuring rod (14) extends to the front of the workbench (1) through the slide hole (13).

3. The thin plate sheet metal bending device according to claim 1, characterized in that: The left and right side walls of the mold base (2) are each provided with a plurality of notches (15) distributed front to back, and the outer walls of the two rotating lower blocks (4) opposite to each other are respectively fixedly connected with a connecting block (16) and a supporting plate (17), and springs (18) are fixedly connected between the connecting block (16) and the supporting plate (17) and the plurality of notches (15).

4. The thin plate sheet metal bending device according to claim 2, characterized in that: A screw rod (19) threadably connected to the slider (12) is rotatably connected inside the middle slide groove (11), and a motor (20) is installed inside the workbench (1), and the output end of the motor (20) is fixedly connected to the screw rod (19).

5. The thin plate sheet metal bending device according to claim 1, characterized in that: A telescopic cylinder (21) is mounted on the upper end surface of the mounting plate (5), and an output end of the telescopic cylinder (21) extends to the bottom of the mounting plate (5) and is fixedly connected to the movable plate (6).

6. The thin plate sheet metal bending device according to claim 1, characterized in that: The inner wall of the arc-shaped groove (3) is provided with a plurality of evenly distributed limiting grooves (22), and the outer wall of the rotating lower block (4) is fixedly connected with a limiting strip (23) matching the limiting grooves (22).

7. The thin plate sheet metal bending device according to claim 1, characterized in that: The front end surface of the workbench (1) is provided with a scale mark (24).

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