A plate bending device

Abstract

This utility model discloses a sheet metal bending device, including a frame and two U-shaped frames. Two driven rollers are rotatably connected to the outer wall of the frame. An adjustment assembly is provided at the bottom of the frame. A pressure roller is rotatably connected between the two U-shaped frames. An L-shaped mounting plate is fixedly connected to the outer wall of the frame, and a geared motor is fixedly connected to the outer wall of the L-shaped mounting plate. One end of the output shaft of the geared motor passes through the outer wall of the L-shaped mounting plate and is fixedly connected to one end of the pressure roller. This utility model uses multiple guide rollers to assist bending, eliminating the manual pressing step and improving operational safety. Hydraulic cylinders regulate the pressure of the guide rollers, replacing manual experience-based control, ensuring stable and uniform force, reducing forming defects, and improving accuracy and consistency. A servo motor adjusts the gap between the pressure roller and the driven roller, adapting to sheets of different thicknesses, enhancing equipment versatility, and helping to improve production efficiency.

Description

Technical Field

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

[0002] Sheet bending is a process in which metal sheets are bent and deformed according to a predetermined angle or shape by applying pressure to them using molds or machinery. Traditional bending machines apply pressure directly to the sheet through the contact between the upper and lower dies to achieve bending, while roll forming utilizes the rolling friction of the rollers and the elastic-plastic deformation characteristics of the sheet to gradually shape it, making it more suitable for processing complex curved surfaces.

[0003] In existing technologies, traditional sheet metal roll forming processes often require manual pressure on the bent end to assist in shaping as the sheet gradually bends. This method has several significant drawbacks. From an operational perspective, the pressure applied manually relies entirely on the operator's experience and intuition, making it difficult to achieve a stable and uniform force output. Excessive pressure can easily lead to over-bending of the sheet. Furthermore, the sheet is in a dynamic state during roll forming, and the operator's hand is too close to the rotating roller and the bent portion of the sheet. A slight mishap could result in the hand being caught between the roller and the sheet, causing crushing or other safety accidents. Moreover, it cannot be adapted to roll forming of sheets of different thicknesses. Therefore, we propose a sheet metal bending device to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a sheet metal bending device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sheet metal bending device includes a frame and two U-shaped frames. Two driven rollers are rotatably connected to the outer wall of the frame. An adjustment assembly is provided at the bottom of the frame. A pressure roller is rotatably connected between the two U-shaped frames. An L-shaped mounting plate is fixedly connected to the outer wall of the frame. A geared motor is fixedly connected to the outer wall of the L-shaped mounting plate. One end of the output shaft of the geared motor passes through the outer wall of the L-shaped mounting plate and is fixedly connected to one end of the pressure roller. An arc-shaped cover is hinged to the top of the frame. A long shaft is rotatably connected inside the arc-shaped cover. Multiple guide rollers are evenly fixedly connected to the outer wall of the long shaft. A hydraulic cylinder is rotatably connected to the outer wall of the frame. The output end of the hydraulic cylinder is rotatably connected to the outer wall of the arc-shaped cover.

[0007] Preferably, the adjusting assembly includes two T-shaped sleeves, which are rotatably connected to the bottom of the frame. Synchronous pulleys are fixedly fitted onto the outer walls of both T-shaped sleeves, and the same synchronous transmission belt meshes with the outer walls of the two synchronous pulleys. A servo motor is located at the bottom of the frame, and the top of the servo motor's output shaft is fixedly connected to the bottom of one of the synchronous pulleys. Threaded rods are threaded onto the inner walls of both T-shaped sleeves, and the tops of the two threaded rods are fixedly connected to the bottoms of two U-shaped frames, respectively. The vertical height of the pressure roller is adjusted by setting the adjusting assembly.

[0008] Preferably, tapered roller bearings are fixedly fitted on the outer walls of both T-sleeves, and the outer rings of the tapered roller bearings are fixedly connected to the bottom of the frame. The T-sleeves are rotated by the tapered roller bearings.

[0009] Preferably, the outer wall of the frame has two guide holes, and the outer walls of the two threaded rods are slidably connected to the inner walls of the two guide holes respectively, so that the threaded rods can be raised and lowered by setting the guide holes.

[0010] Preferably, the pressure roller is located above the two driven rollers.

[0011] Preferably, the bottom of the frame is fixedly connected to a foot, and the bottom of the servo motor is fixedly connected to the top of the foot, so that the frame is supported by the foot.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] This solution uses multiple guide rollers to assist bending, eliminating the need for manual pressing and improving operational safety; hydraulic cylinders regulate the pressure of the guide rollers, replacing manual experience-based control, ensuring stable and uniform force, reducing forming defects, and improving precision and consistency; servo motors adjust the gap between the pressure roller and the driven roller, adapting to different thicknesses of sheet metal, enhancing equipment versatility, and helping to improve production efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific 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.

[0015] Figure 1 This is a front view structural diagram of a sheet metal bending device proposed in this utility model;

[0016] Figure 2 This is a partial three-dimensional structural diagram of a sheet metal bending device proposed in this utility model.

[0017] Figure 3 This utility model provides a schematic diagram of the driven roller, T-sleeve, synchronous pulley, synchronous transmission belt, threaded rod, U-shaped frame, and pressure roller structure of a sheet metal bending device.

[0018] Figure 4 This is a rear view structural diagram of a sheet metal bending device proposed in this utility model.

[0019] In the diagram: 1. Frame; 2. Driven roller; 3. T-sleeve; 4. Synchronous pulley; 5. Synchronous transmission belt; 6. Servo motor; 7. Threaded rod; 8. U-shaped frame; 9. Pressure roller; 10. Gear motor; 11. Arc-shaped cover; 12. Long shaft; 13. Guide roller; 14. Hydraulic cylinder; 15. Leg frame. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1-4 As shown, a sheet metal bending device is disclosed, comprising a frame 1 and two U-shaped frames 8. The outer wall of the frame 1 is rotatably connected to two driven rollers 2 via existing bearings. The driven rollers 2 can support the sheet metal and rotate as the sheet metal moves, providing basic guidance and support for the conveying and bending of the sheet metal, ensuring that the sheet metal moves smoothly during the bending process. The outer walls of the two T-shaped sleeves 3 are fixedly fitted with tapered roller bearings, and the outer rings of the tapered roller bearings are fixedly connected to the bottom of the frame 1. A pressure roller 9 is rotatably connected between the two U-shaped frames 8 via existing bearings, and the pressure roller 9 is located above the two driven rollers 2.

[0022] An L-shaped mounting plate is fixedly connected to the outer wall of the frame 1. A geared motor 10 is fixedly connected to the outer wall of the L-shaped mounting plate. One end of the output shaft of the geared motor 10 passes through the outer wall of the L-shaped mounting plate and is fixedly connected to one end of the pressure roller 9. The pressure roller 9 rotates under the drive of the geared motor 10 and can cooperate with the driven roller 2 to move the plate and apply pressure to the plate, so that the plate is gradually bent into an arc shape.

[0023] The top of the frame 1 is hinged with an arc-shaped cover 11. The inside of the arc-shaped cover 11 is rotatably connected to a long shaft 12 through existing bearings. Multiple guide rollers 13 are uniformly fixedly connected to the outer wall of the long shaft 12. The multiple guide rollers 13 contact the bending part during the bending process of the sheet metal and apply downward pressure to the sheet metal from above to assist bending. The number of long shafts 12 and guide rollers 13 can be increased inside the arc-shaped cover 11.

[0024] A hydraulic cylinder 14 is rotatably connected to the outer wall of the frame 1. The output end of the hydraulic cylinder 14 is rotatably connected to the outer wall of the arc-shaped cover 11. The hydraulic cylinder 14 can drive the arc-shaped cover 11 to rotate, thereby adjusting the position of the guide roller 13 and the pressure on the plate. This allows the auxiliary bending effect of the guide roller 13 to be flexibly adjusted according to the degree of bending. A foot bracket 15 is fixedly connected to the bottom of the frame 1. The bottom of the servo motor 6 is fixedly connected to the top of the foot bracket 15.

[0025] The bottom of the frame 1 is equipped with an adjustment assembly, which includes two T-shaped sleeves 3. The bottom of the frame 1 is rotatably connected to the two T-shaped sleeves 3. The outer walls of the two T-shaped sleeves 3 are fixedly fitted with synchronous pulleys 4. The outer walls of the two synchronous pulleys 4 are meshed with the same synchronous transmission belt 5. The synchronous transmission belt 5 is tensioned by an existing tensioning wheel. The bottom of the frame 1 is equipped with a servo motor 6. The top of the output shaft of the servo motor 6 is fixedly connected to the bottom of one of the synchronous pulleys 4. The servo motor 6 drives the two T-shaped sleeves 3 to rotate synchronously through the synchronous pulleys 4 and the synchronous transmission belt 5, thereby causing the two threaded rods 7 to rise and fall synchronously. The inner walls of the two T-shaped sleeves 3 are threadedly connected with threaded rods 7. The outer wall of the frame 1 is provided with two guide holes. The outer walls of the two threaded rods 7 are slidably connected to the inner walls of the two guide holes respectively. The tops of the two threaded rods 7 are fixedly connected to the bottoms of the two U-shaped frames 8 respectively.

[0026] Working principle: During use, the sheet material is placed between the driven roller 2 and the pressure roller 9. The geared motor 10 rotates, causing the pressure roller 9 to rotate. As the pressure roller 9 rotates, the sheet material moves along the gap between the driven roller 2 and the pressure roller 9, gradually bending into an arc shape. During this process, multiple guide rollers 13 can assist in bending, depending on the degree of bending. The main mechanism is that the hydraulic cylinder 14 rotates the arc-shaped cover 11 around the hinge position. The rotation of the arc-shaped cover 11 drives the long shaft 12 and multiple guide rollers 13 to rotate. By adjusting the position of the guide rollers 13, when the sheet material contacts the outer wall of the guide rollers 13 after bending, the guide rollers 13 are positioned at the bending point. Above the part, after contact, the downward pressure assists the bending process, avoiding manual bending of the bending end and reducing the risk; when rolling and forming plates of different thicknesses, the servo motor 6 drives the synchronous pulley 4 connected to it to rotate. The rotation of the synchronous pulley 4 drives another synchronous pulley 4 to rotate through the synchronous transmission belt 5, thereby driving the two T-shaped sleeves 3 to rotate synchronously. The rotation of the two T-shaped sleeves 3 drives the two threaded rods 7 to rotate. The two threaded rods 7 are raised and lowered through the threaded connection with the two T-shaped sleeves 3. The raising and lowering of the two threaded rods 7 drives the two U-shaped frames 8 to rise and fall, which in turn drives the pressure roller 9 to rise and fall, adjusting the gap between the pressure roller 9 and the two driven rollers 2 below.

[0027] It should be noted that when actually put into use, an existing PLC controller can be added. The PLC controller is electrically connected to the servo motor 6, the geared motor 10, the hydraulic cylinder 14, and the external pump station to facilitate the control of the overall operation.

[0028] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0029] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sheet metal bending device, comprising a frame (1) and two U-shaped frames (8), characterized in that, Two driven rollers (2) are rotatably connected to the outer wall of the frame (1). An adjustment assembly is provided at the bottom of the frame (1). A pressure roller (9) is rotatably connected between two U-shaped frames (8). An L-shaped mounting plate is fixedly connected to the outer wall of the frame (1). A geared motor (10) is fixedly connected to the outer wall of the L-shaped mounting plate. One end of the output shaft of the geared motor (10) passes through the outer wall of the L-shaped mounting plate and is fixedly connected to one end of the pressure roller (9). An arc-shaped cover (11) is hinged to the top of the frame (1). A long shaft (12) is rotatably connected inside the arc-shaped cover (11). Multiple guide rollers (13) are evenly fixedly connected to the outer wall of the long shaft (12). A hydraulic cylinder (14) is rotatably connected to the outer wall of the frame (1). The output end of the hydraulic cylinder (14) is rotatably connected to the outer wall of the arc-shaped cover (11).

2. The sheet metal bending device according to claim 1, characterized in that, The adjustment assembly includes two T-shaped sleeves (3). The bottom of the frame (1) is rotatably connected to the two T-shaped sleeves (3). The outer walls of the two T-shaped sleeves (3) are fixedly fitted with synchronous pulleys (4). The outer walls of the two synchronous pulleys (4) are meshed with the same synchronous transmission belt (5). The bottom of the frame (1) is provided with a servo motor (6). The top of the output shaft of the servo motor (6) is fixedly connected to the bottom of one of the synchronous pulleys (4). The inner walls of the two T-shaped sleeves (3) are threaded with threaded rods (7). The tops of the two threaded rods (7) are fixedly connected to the bottoms of the two U-shaped frames (8) respectively.

3. The sheet metal bending device according to claim 2, characterized in that, Both T-shaped sleeves (3) have tapered roller bearings fixedly fitted on their outer walls, and the outer rings of the tapered roller bearings are fixedly connected to the bottom of the frame (1).

4. A sheet metal bending device according to claim 2, characterized in that, The outer wall of the frame (1) has two guide holes, and the outer walls of the two threaded rods (7) are slidably connected to the inner walls of the two guide holes respectively.

5. A sheet metal bending device according to claim 1, characterized in that, The pressure roller (9) is located above the two driven rollers (2).

6. A sheet metal bending device according to claim 2, characterized in that, The bottom of the frame (1) is fixedly connected to a stand (15), and the bottom of the servo motor (6) is fixedly connected to the top of the stand (15).

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