A springback-resistant bending forming mold

Abstract

This utility model discloses an anti-springback bending forming mold, belonging to the technical field of bending forming molds. It includes a mold base, a movable box fixedly connected to the top of the mold base, a beam through-hole provided on the top of the movable box, a lead screw rotatably connected to the inner cavity of the movable box, a movable seat threaded onto the outer side of the lead screw, and a laser mounted on the top of the movable seat. In this utility model, through the coordinated use of the movable box, lead screw, servo motor, movable seat, and laser, after the sheet metal is bent on two bending modules, a high-energy laser beam is emitted from the laser towards the bending point, thereby hardening the bent area of ​​the sheet metal. Simultaneously, the threaded engagement between the lead screw and the movable seat drives the laser to move, thus hardening all bending points of the sheet metal and effectively preventing springback after bending.

Description

Technical Field

[0001] This utility model relates to the field of bending forming mold technology, and more specifically, to an anti-springback bending forming mold. Background Technology

[0002] Bending is the process by which sheet metal undergoes elastic deformation under the pressure of the upper or lower die of a bending machine, followed by plastic deformation. In the initial stage of plastic bending, the sheet metal is freely bent. As the upper or lower die applies pressure, the sheet metal gradually comes into contact with the inner surface of the V-groove of the lower die, while the radius of curvature and bending lever gradually decrease. Pressure continues to be applied until the stroke ends, resulting in full contact between the upper and lower dies and the sheet metal at three points, thus completing a V-bend, commonly known as a fold. However, the springback of the folded edge has long been a problem in the industry, especially when the bending angle of the product requires high precision. Due to the instability of the bending angle, not only can the bending angle tolerance be not guaranteed, but it also seriously affects other related dimensions. Therefore, we have proposed an anti-springback bending forming die. Utility Model Content

[0003] In view of the problems mentioned in the background art, the purpose of this utility model is to provide an anti-springback bending forming mold.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] A springback-resistant bending forming mold includes a mold base, a movable box fixedly connected to the top of the mold base, a beam through slot on the top of the movable box, a lead screw rotatably connected to the inner cavity of the movable box, a movable seat threaded onto the outer side of the lead screw, a laser on the top of the movable seat, a servo motor fixedly mounted at the end of the movable box, the output shaft of the servo motor connected to the end of the lead screw, a sliding groove on the side of the movable box, two limiting mechanisms on the sliding groove, and two bending lower modules fixedly connected to the top surface of the movable box.

[0006] As a preferred embodiment of this utility model, the limiting mechanism includes a limiting seat slidably connected to the inner cavity of the slide groove. One end of the limiting seat extends into the inner cavity of the movable box and has an installation groove. A contact sensor is fixedly installed in the inner cavity of the installation groove. The end face of the contact sensor is in contact with the side of one end of the limiting seat. The other end of the limiting seat extends to the outer side of the movable box and has a screw hole. A wing screw is threaded into the screw hole, and the inner side of the wing screw is in contact with the outer side of the movable box.

[0007] In a preferred embodiment of this utility model, the two sides of the movable base are respectively fitted to the inner wall of the movable box.

[0008] As a preferred embodiment of this utility model, the mold base has multiple mounting holes on both sides.

[0009] As a preferred embodiment of this utility model, a protective shell is fixedly connected to the end of the mobile box and located outside the servo motor.

[0010] As a preferred embodiment of this utility model, the side of the movable box is provided with a movable groove, and the side of the laser is fixedly connected with an optical fiber, the end of which extends through the movable groove to the outside of the movable box.

[0011] The advantages of this utility model are:

[0012] (1) In this utility model, by using the combination of the moving box, lead screw, servo motor, moving seat and laser, when the plate is bent on the two bending modules, the laser emits a high-energy laser beam to the bending point, thereby hardening the bending point of the plate. At the same time, the laser is moved by the threaded connection between the lead screw and the moving seat, so as to harden all the bending points of the plate and effectively avoid the springback of the plate after bending.

[0013] (2) In this utility model, the two limit seats slide in the slide by the combined use of the slide groove, the limit seat, the contact sensor, the screw hole and the wing screw. The limit seat is fixed by the wing screw and the squeezing of the side of the moving box. The movement of the moving seat is limited by the contact sensor on the side of the two limit seats, so as to control the position of laser heat treatment during batch bending and improve work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the mobile box of this utility model;

[0016] Figure 3 This is a cross-sectional schematic diagram of the mobile box of this utility model;

[0017] Figure 4 This is a schematic diagram showing the disassembled limiting mechanism of this utility model.

[0018] The following are the labels in the diagram: 1. Mold base; 2. Moving box; 3. Beam through slot; 4. Lead screw; 5. Servo motor; 6. Moving seat; 7. Laser; 8. Movable slot; 9. Fiber optic cable; 10. Slide groove; 11. Limiting mechanism; 12. Limiting seat; 13. Mounting slot; 14. Contact sensor; 15. Screw hole; 16. Wing screw; 17. Mounting hole; 18. Protective shell; 19. Lower bending module. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1:

[0023] Please see Figure 1-4 A springback-resistant bending forming mold includes a mold base 1, a movable box 2 fixedly connected to the top of the mold base 1, a beam through groove 3 provided on the top of the movable box 2, a lead screw 4 rotatably connected to the inner cavity of the movable box 2, a movable seat 6 threadedly sleeved on the outer side of the lead screw 4, a laser 7 provided on the top of the movable seat 6, a servo motor 5 fixedly installed at the end of the movable box 2, the output shaft of the servo motor 5 being connected to the end of the lead screw 4, a sliding groove 10 provided on the side of the movable box 2, two limiting mechanisms 11 provided on the sliding groove 10, and two bending lower modules 19 fixedly connected to the top surface of the movable box 2.

[0024] In this embodiment, the servo motor 5 is powered by the power supply of the bending machine and controlled by the control panel on the bending machine.

[0025] For details, please refer to Figure 1 and Figure 4The limiting mechanism 11 includes a limiting seat 12 slidably connected to the inner cavity of the slide groove 10. One end of the limiting seat 12 extends into the inner cavity of the movable box 2 and has an installation groove 13. A contact sensor 14 is fixedly installed in the inner cavity of the installation groove 13. The end face of the contact sensor 14 is in contact with the side of one end of the limiting seat 12. The other end of the limiting seat 12 extends into the outer side of the movable box 2 and has a screw hole 15. A wing screw 16 is threaded in the screw hole 15. The inner side of the wing screw 16 is in contact with the outer side of the movable box 2.

[0026] In this embodiment, the limiting seat 12 is fixed by pressing the side of the movable box 2 with the butterfly screw 16 so that the movement of the movable seat 6 can be limited by the contact sensor 14 on the side of the limiting seat 12.

[0027] For details, please refer to Figure 3 The two sides of the movable seat 6 are respectively attached to the inner wall of the movable box 2.

[0028] In this embodiment, the inner wall of the movable box 2 is used to limit the movable seat 6, so that the movable seat 6 can only move along the axial direction of the lead screw 4.

[0029] For details, please refer to Figure 2 Multiple mounting holes 17 are provided on both sides of the mold base 1.

[0030] In this embodiment, the mold base 1 is installed by using the mounting hole 17 and bolts.

[0031] For details, please refer to Figure 3 A protective shell 18 is fixedly connected to the end of the moving box 2 and to the outside of the servo motor 5.

[0032] In this embodiment, the servo motor 5 is protected by a protective shell 18.

[0033] For details, please refer to Figure 1 The side of the mobile box 2 is provided with a movable slot 8, and the side of the laser 7 is fixedly connected with an optical fiber 9. The end of the optical fiber 9 extends through the movable slot 8 to the outside of the mobile box 2.

[0034] In this embodiment, the end of the optical fiber 9 is connected to an external laser generator so that the laser 7 emits a laser beam.

[0035] Working principle: In use, firstly, the mold base 1 is installed on the bending machine using screws and mounting holes 17, and the corresponding upper bending die is also installed on the bending machine. Then, when the sheet metal needs to be bent, the sheet metal is placed on the two lower bending modules 19. The bending machine drives the upper bending die to move downward to squeeze the sheet metal, thereby bending the sheet metal inward towards the two lower bending modules 19, thus completing the bending operation. Then, the positions of the two limiting seats 12 located in the inner cavity of the slide groove 10 are slid so that the distance between the two limiting seats 12 is equal to the length of the sheet metal produced in batches. Finally, the laser generator 7 is driven by an external laser generator to emit a laser beam upward, and the lead screw 4 is rotated by the servo motor 5. The threaded engagement between rod 4 and movable seat 6 drives movable seat 6 and laser 7 to move. The high-energy laser beam emitted by laser 7 passes through beam slot 3 and irradiates the bending point of the plate, thereby hardening the bending point to prevent the bent workpiece from springing back. In addition, when the end face of movable seat 6 contacts the contact sensor 14 on the side of limit seat 12, the control panel on the bending machine controls the servo motor 5 to stop running. When the workpiece is laser heat treated again, the servo motor 5 drives the lead screw 4 to reverse, so that movable seat 6 stops running when it contacts the contact sensor 14 on the side of another limit seat 12. In this way, the movement of movable seat 6 is limited by contact sensor 14.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A springback-proof bending die comprising a die base (1), characterized in that: A movable box (2) is fixedly connected to the top of the mold base (1). A beam through slot (3) is provided on the top of the movable box (2). A lead screw (4) is rotatably connected to the inner cavity of the movable box (2). A movable seat (6) is threaded onto the outer side of the lead screw (4). A laser (7) is provided on the top of the movable seat (6). A servo motor (5) is fixedly installed at the end of the movable box (2). The output shaft of the servo motor (5) is connected to the end of the lead screw (4). A sliding groove (10) is provided on the side of the movable box (2). Two limiting mechanisms (11) are provided on the sliding groove (10). Two bending lower modules (19) are fixedly connected to the top surface of the movable box (2).

2. The anti-springback bending forming mold according to claim 1, characterized in that: The limiting mechanism (11) includes a limiting seat (12) slidably connected to the inner cavity of the slide groove (10). One end of the limiting seat (12) extends into the inner cavity of the movable box (2) and has an installation groove (13). A contact sensor (14) is fixedly installed in the inner cavity of the installation groove (13). The end face of the contact sensor (14) is in contact with the side of one end of the limiting seat (12). The other end of the limiting seat (12) extends into the outer side of the movable box (2) and has a screw hole (15). A wing screw (16) is threaded in the screw hole (15). The inner side of the wing screw (16) is in contact with the outer side of the movable box (2).

3. The anti-springback bending forming mold according to claim 1, characterized in that: The two sides of the movable seat (6) are respectively attached to the inner wall of the movable box (2).

4. The anti-springback bending forming mold according to claim 1, characterized in that: The mold base (1) has multiple mounting holes (17) on both sides.

5. The anti-springback bending forming mold according to claim 1, characterized in that: A protective shell (18) is fixedly connected to the end of the moving box (2) and outside the servo motor (5).

6. The anti-springback bending forming mold according to claim 1, characterized in that: The side of the movable box (2) is provided with a movable slot (8), and the side of the laser (7) is fixedly connected with an optical fiber (9). The end of the optical fiber (9) extends through the movable slot (8) to the outside of the movable box (2).

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