Semi-automatic bending device for metal plates

Abstract

The utility model discloses a semi-automatic bending device for metal plates, and relates to the technical field of workpiece bending. The device comprises an operation table, a rotary table is arranged on the operation table, a plurality of workpiece machining grooves are annularly distributed in the rotary table, and bending lower dies can be placed in the workpiece machining grooves; the operation table is further provided with an upper die driving assembly, the position of a bending upper die is adjusted through two lead screw modules, an electric hydraulic rod is installed on the basis of a lead screw sliding block on the second lead screw module, and the bending upper die is arranged at the bottom of the electric hydraulic rod; the device is further provided with a control unit, the control unit controls the lower bending dies on the rotary table to be opposite to the upper bending dies one by one by controlling the stepping motor, and the upper bending dies are driven by the electric hydraulic rods to stretch out and draw back to complete bending operation of metal plates located on the lower bending dies. The metal workpiece bending device can be suitable for small-batch bending operation of metal workpieces of different specifications, is more convenient and faster based on semi-automatic operation, and is high in flexibility.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece bending, in particular to a semi-automatic bending device for metal plates. Background Art

[0002] A bending machine is a device used to bend workpieces. Its principle is: under the pressure of the upper or lower die of the bending machine, the metal sheet first undergoes elastic deformation and then enters plastic deformation. In the initial stage of plastic bending, the sheet is bent freely. As the upper or lower die applies pressure to the sheet, the sheet gradually comes close to the inner surface of the lower model groove, and at the same time, the radius of curvature and the bending force arm gradually decrease, and pressure continues until the stroke ends.

[0003] However, the existing bending machines can usually only place one workpiece on a bending die. During bending, the workpiece needs to be replaced before the bending operation can be performed again, resulting in low overall bending efficiency. In addition, since the bending part is partially embedded in the die groove, it is inconvenient for users to take it. Therefore, it does not meet the existing needs. In this regard, we propose a semi-automatic bending device for metal sheets. Utility Model Content

[0004] The utility model aims to provide a semi-automatic bending device for metal plates, which realizes semi-automatic bending of metal plates and is suitable for batch processing.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0006] A semi-automatic bending device for metal plates comprises an operating table, a turntable is arranged on the operating table, a plurality of workpiece processing grooves are distributed in an annular manner on the turntable, and a bending lower die can be placed in the workpiece processing grooves;

[0007] The operating table is also provided with an upper die driving assembly, including a slide, the slide is adjusted by a first screw module, a second screw module is provided on the slide, an electric hydraulic mechanism is installed based on the screw slider on the second screw module, the electric hydraulic mechanism includes an electric hydraulic rod, and a bending upper die is provided at the bottom of the electric hydraulic rod;

[0008] The device is also provided with a control unit, which controls the stepper motor to control several bending lower dies on the turntable to be opposite to the bending upper dies one by one. The bending upper dies complete the bending operation of the metal sheet located on the bending lower dies under the telescopic drive of the electric hydraulic rod.

[0009] Preferably, for magnetically attractive iron workpieces, in the device, a material picking assembly is provided for each workpiece processing groove, and the material picking assembly is used to take the workpiece out of the workpiece processing groove after the workpiece is bent, and the material picking assembly includes an electric turntable, a bracket is installed at the upper end of the electric turntable, an electric telescopic rod is installed on the outer wall of the end of the bracket away from the electric turntable, and an electromagnet is installed at the telescopic end of the electric telescopic rod, and the adsorption and extraction of the workpiece is achieved by the electromagnet.

[0010] Furthermore, the electric rotating frame and the electromagnet are controlled by a control unit to achieve automatic operation.

[0011] Furthermore, in the device, a stamping and bending seat is provided on the slide, a mounting groove is provided at the middle position of the stamping and bending seat, and side grooves are provided on both sides of the mounting groove. The inside of the side groove is used to set the second screw module, and the screw slider in the second screw module is provided with an electric hydraulic rod, and the side edge of the body of the electric hydraulic rod includes sliding along the side groove, which especially improves the stability of the electric hydraulic rod during the execution process.

[0012] Furthermore, the device includes a pressure sensor arranged at the bottom of the workpiece processing groove, and determines whether the punching is in place by the pressure value detected by the pressure sensor.

[0013] Furthermore, the bending lower die and the bending upper die can be replaced with suitable die shapes according to different workpiece bending design specifications.

[0014] Compared with the prior art, the beneficial effects of the present invention include the following points:

[0015] (1) The utility model realizes continuous processing of a plurality of workpieces by combining a turntable and a stepping motor, which is more efficient than the processing method of manually feeding one by one in a small batch production process.

[0016] (2) The utility model adopts two screw modules to improve the flexibility of processing. For the plane, the first screw module realizes the displacement control of the slide, which can be adjusted in the Y-axis direction, and the second screw module is adjusted in the X-axis direction, and adopts independent control, so that it can cooperate with the control unit to achieve better processing positioning. For example, if both sets of screw modules and stepper motors are controlled by the control unit, the degree of coordination of each step is higher. The utility model can simply control the stepper motor by the control unit, and adjust the two sets of screw modules in combination with the position of the turntable. It is more practical and convenient in small-scale production and testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2It is a top view of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a stepping motor of the utility model;

[0020] Figure 4 It is the principle diagram of the utility model;

[0021] In the figure: 1. operating table; 2. slide; 3. first screw module; 4. stamping and bending seat; 5. second screw module; 6. assembly groove; 7. side slot; 8. ball screw; 9. screw slider; 10. electric hydraulic rod; 11. bending upper die; 12. turntable; 13. stepper motor; 14. workpiece processing groove; 15. bending lower die; 16. pressure sensor; 17. controller; 18. positioning and material taking component; 19. electric turntable; 20. bracket; 21. electric telescopic rod; 22. electromagnet. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-4 A semi-automatic bending device for metal sheets can be used for bending workpieces (metal connectors). The metal connectors are generally metal sheets with a thickness of 0-3 mm. The metal workpieces include those used for welding and fixing between two steel plates, such as hinges.

[0024] Example 1

[0025] The device described in the utility model is provided with an operating table 1, a turntable 12 is provided in the middle of the operating table 1, a plurality of workpiece processing grooves 14 are distributed in an annular manner on the turntable 12, and a bending lower die 15 can be placed in the workpiece processing groove 14;

[0026] The operating table 1 is also provided with an upper die driving assembly, including a slide 2, the slide 2 realizes the adjustment of its position through a first screw module 3, a second screw module 5 is provided on the slide 2, an electric hydraulic mechanism is installed based on the screw slider 9 on the second screw module 5, the electric hydraulic mechanism includes an electric hydraulic rod 10, and a bending upper die 11 is provided at the bottom of the electric hydraulic rod 10;

[0027] The device is also provided with a control unit 17, which controls the stepper motor 13 to control the plurality of bending lower dies 15 on the turntable 12 to be opposite to the bending upper dies 11 one by one. The bending upper dies 11 complete the bending operation of the metal sheet on the bending lower dies 15 under the telescopic drive of the electric hydraulic rod 10.

[0028] Example 2

[0029] Embodiment 2 provides semi-automatic operation and implementation process based on the basic operation adopted in embodiment 1.

[0030] The semi-automatic bending device comprises an operating table 1, and also comprises:

[0031] An upper die driving assembly is installed on one side above the operating table 1;

[0032] A turntable 12 is installed at a middle position above the operating table 1 and is located below the movable bending assembly 2. A stepper motor 13 is installed below the turntable 12, and the stepper motor 13 is connected to the turntable 12 through a driving shaft.

[0033] Workpiece processing grooves 14 are arranged at intervals in annular shapes on the upper surface of the turntable 12, and a bending lower die 15 is arranged inside the workpiece processing grooves 14;

[0034] A positioning and taking assembly 18, which is mounted at one end of each workpiece processing slot 14;

[0035] The workpiece to be bent is placed in the workpiece processing groove 14 at the corresponding position, and the positioning and material taking component 18 is used to press the workpiece down to ensure that the workpiece will not be separated or offset during rotation; the turntable 12 is driven to rotate by the stepper motor 13. Every time a pulse signal is input to the stepper motor 13, the rotor will be at an angle. Through the characteristics of the motor, the workpiece can be accurately rotated to the upper die driving component for bending operation. After bending, the turntable 12 continues to rotate forward and rotates the subsequent workpiece to the mobile bending component 2 for bending. The bent workpiece is moved out of the place, which is convenient for the operator there to remove the bent workpiece and add a new workpiece. In this process, there is no need to stop the machine for replacement, and the overall stamping efficiency is higher.

[0036] In addition, the workpiece processing groove 14 can be shaped into different sizes to place different workpieces, and can achieve the effect of bending workpieces of different sizes during rotation.

[0037] See also Figure 1 The positioning and material taking assembly 18 comprises an electric rotating frame 19, a bracket 20 is installed on the upper end of the electric rotating frame 19, an electric telescopic rod 21 is installed on the outer wall of one end of the bracket 20 away from the electric rotating frame 19, and an electromagnet 22 is installed at the telescopic end of the electric telescopic rod 21;

[0038] The electric rotating frame 19 is driven by a motor (not shown in the figure) to rotate. The electric rotating frame 19 is used to drive the bracket 20 to rotate. During the stamping and bending, the part is rotated sideways to avoid affecting the stamping and bending operation. The electric telescopic rod 21 is used to drive the electromagnet 22 to telescopically move. During the rotation, the electromagnet 22 is pressed down onto the workpiece by the electric telescopic rod 21, so that the workpiece is firmly confined in the workpiece processing groove 14, thereby improving stability and avoiding the workpiece from detaching and deviating during rotation. At the same time, after the workpiece is bent, the electromagnet 22 magnetically absorbs the workpiece, and the electric telescopic rod 21 retracts upward to take the workpiece out of the workpiece processing groove 14, making it convenient for users to take it quickly.

[0039] See also Figure 1 The upper die driving assembly includes a first screw module 3, a stamping and bending seat 4 is installed above the first screw module 3, a mounting groove 6 is opened at the middle position of the stamping and bending seat 4, and side grooves 7 are opened on both sides of the mounting groove 6;

[0040] The first screw module 3 is used to drive the stamping and bending seat 4 to move forward and backward, and move the bending part to a desired position through the movement.

[0041] See also Figure 1 The second screw module 5 is installed inside the side slot 7, the electric hydraulic rod 10 is installed on the outer wall of the second screw module 5, and the telescopic end of the electric hydraulic rod 10 is installed with a bending upper die 11;

[0042] The second screw module 5 is used to drive the bending upper die 11 to move left and right, and the stamping and bending position of the bending upper die 11 is adjusted by movement. The electric hydraulic rod 10 is used to drive the bending upper die 11 to realize the lifting and stamping and bending operations.

[0043] See also Figure 1 The first screw module 3 and the second screw module 5 both include a ball screw 8, a screw slider 9 is mounted on the outer wall of the ball screw 8, the first screw module 3 is slidably connected to the stamping and bending seat 4 through the screw slider 9, and the second screw module 5 is slidably connected to the electric hydraulic rod 10 through the screw slider 9;

[0044] A screw motor (not shown) is arranged at the end of the ball screw 8, and the screw motor and the ball screw 8 drive the screw slider 9 to move, and during the movement, the components assembled at the screw slider 9 are driven to move.

[0045] See also Figure 1 , Figure 4 A controller 17 is installed on the front end of the operating table 1, and the output end of the controller 17 is wirelessly connected to the control end of the mobile bending component 2, the positioning and picking component 18, and the stepping motor 13 respectively;

[0046] The controller 17 is used to control the above-mentioned devices.

[0047] See also Figure 2 , a pressure sensor 16 is installed at the inner bottom of the bending lower die 15, and the output end of the pressure sensor 16 is wirelessly connected to the input end of the controller 17;

[0048] During the stamping and bending process, the workpiece is pressed down into the lower bending die 15, so that the workpiece contacts the pressure sensor 16. The pressure sensor 16 detects the pressure change and feeds back a signal to the controller 17. The controller 17 receives the signal and determines that the stamping and bending operation is to be performed there.

[0049] Working principle: When in use, place the workpiece to be bent in the workpiece processing groove 14, turn on the first screw module 3, drive the stamping and bending seat 4 to move to the required position, then turn on the second screw module 5, move the stamping and bending part to a position aligned with the lower bending die 15, and fix the workpiece in the workpiece processing groove 14 by pressing down the electric telescopic rod 21;

[0050] The stepper motor 13 is turned on to drive the turntable 12 to rotate. Through the preset rotation angle, the workpiece is moved to the bottom of the stamping and bending part. The electric hydraulic rod 10 drives the bending upper die 11 to press the workpiece down into the bending lower die 15, so that the workpiece is deformed and bent. The pressure sensor 16 detects the pressure change and feeds back the signal to the controller 17. After stamping and bending, the controller 17 controls the stepper motor 13 to rotate again.

[0051] Before bending, the electric rotating frame 19 is used to drive the bracket 20 to rotate, and by rotating during stamping and bending, the part is rotated sideways to avoid the part affecting the stamping and bending operation; after bending, the electric rotating frame 19 rotates the electric telescopic rod 21 to the top of the workpiece, and the electric telescopic rod 21 extends downward, driving the electromagnet 22 to contact the workpiece, and the electromagnet 22 adsorbs the workpiece in a magnetic way, and the electric telescopic rod 21 rises, driving the workpiece to leave the workpiece processing groove 14;

[0052] The turntable 12 continues to rotate, and the bent workpiece is rotated to the operator. The operator takes the magnetically attracted workpiece and adds a new workpiece into the workpiece processing groove 14 to perform a new round of workpiece bending operation.

[0053] In combination with Example 2, the utility model can also achieve the following operations and effects.

[0054] 1. The utility model places the workpiece to be bent in the workpiece processing groove at the corresponding position, relies on the positioning and material taking component to press the workpiece down, and ensures that the workpiece will not be separated or offset during rotation; the turntable is driven to rotate by a stepper motor, and each time a pulse signal is input to the stepper motor, the rotor will be at an angle. Through the characteristics of the motor, the workpiece can be accurately rotated to the bottom of the mobile bending component for bending operation. After bending, the turntable continues to rotate and advances, and the subsequent workpiece is rotated to the bottom of the mobile bending component for bending. The bent workpiece is moved out of the place, which is convenient for the operator there to remove the bent workpiece and add a new workpiece. In this process, there is no need to stop the machine for replacement, and the overall stamping efficiency is higher. The stepper motor is used for movement, which can accurately position and move to the lower part of the bending end; in addition, the workpiece processing groove can be shaped into different sizes for placing different workpieces, and the effect of bending workpieces of different sizes during rotation can be achieved.

[0055] 2. The electric rotating frame is used to drive the bracket to rotate. During the stamping and bending process, the part is rotated sideways to avoid affecting the stamping and bending operation. The electric telescopic rod is used to drive the electromagnet to telescopically move. During the rotation, the electromagnet is pressed down onto the workpiece by the electric telescopic rod, so that the workpiece is firmly restricted in the workpiece processing groove, which improves the stability and avoids the workpiece from detaching and shifting during rotation. At the same time, after the workpiece is bent, the workpiece is adsorbed by the electromagnet in a magnetic way, and then the workpiece is moved upward from the workpiece processing groove by the electric telescopic rod, which is convenient for users to take it quickly.

[0056] 3. The first screw module is used to drive the stamping and bending seat to move forward and backward, and the bending part is moved to the desired position by moving. The second screw module is used to drive the bending upper die to move left and right, and the stamping and bending position of the bending upper die is adjusted by moving. The electric hydraulic rod is used to drive the bending upper die to realize the lifting and lowering stamping and bending operations. The above structure can achieve the effect of moving and adjusting the bending position and improve the flexibility of the bending part.

[0057] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A semi-automatic bending device for metal sheets, characterized in that: The invention comprises an operating table (1), wherein a turntable (12) is provided on the operating table (1), a plurality of workpiece processing grooves (14) are distributed in an annular manner on the turntable (12), and a bending lower die (15) can be placed in the workpiece processing groove (14); The operating table (1) is also provided with an upper die driving assembly, including a slide table (2), wherein the position of the slide table (2) is adjusted by a first screw module (3), a second screw module (5) is provided on the slide table (2), an electric hydraulic mechanism is installed based on the screw slider (9) on the second screw module (5), and the electric hydraulic mechanism includes an electric hydraulic rod (10), and a bending upper die (11) is provided at the bottom of the electric hydraulic rod (10); The device is also provided with a control unit (17), and the control unit (17) controls a plurality of lower bending dies (15) on the turntable (12) to be opposite to the upper bending dies (11) one by one by controlling the stepping motor (13). The upper bending dies (11) complete the bending operation of the metal sheet on the lower bending dies (15) under the telescopic drive of the electric hydraulic rod (10).

2. The semi-automatic bending device for metal sheets according to claim 1, characterized in that: In the device, a material taking assembly (18) is provided for each workpiece processing groove (14), and the material taking assembly (18) is used to take the workpiece out of the workpiece processing groove (14) after the workpiece is bent. The material taking assembly (18) comprises an electric rotating frame (19), and a bracket (20) is installed at the upper end of the electric rotating frame (19). An electric telescopic rod (21) is installed on the outer wall of one end of the bracket (20) away from the electric rotating frame (19), and an electromagnet (22) is installed at the telescopic end of the electric telescopic rod (21), and the adsorption and extraction of the workpiece is realized by the electromagnet (22).

3. The semi-automatic bending device for metal sheets according to claim 2, characterized in that: The electric rotating frame (19) and the electromagnet (22) are both controlled by the control unit (17) to achieve automatic operation.

4. The semi-automatic bending device for metal sheets according to claim 1, characterized in that: The slide table (2) is provided with a stamping and bending seat (4), a mounting groove (6) is provided at the middle position of the stamping and bending seat (4), and side grooves (7) are provided on both sides of the mounting groove (6).

5. The semi-automatic bending device for metal sheets according to claim 4, characterized in that: The interior of the side slot (7) is used to set the second screw module (5), and the screw slider (9) in the second screw module (5) is provided with an electric hydraulic rod (10), and the side edge of the body of the electric hydraulic rod (10) includes a slide along the side slot (7).

6. The semi-automatic bending device for metal sheets according to claim 1, characterized in that: The device comprises a pressure sensor (16) arranged at the bottom of a workpiece processing groove (14), and judges whether the punching is in place by the pressure value detected by the pressure sensor (16).

7. The semi-automatic bending device for metal sheets according to claim 1, characterized in that: The bending lower die (15) and the bending upper die (11) can be replaced with suitable die shapes according to different workpiece bending design specifications.

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