Plate bending angle online detection device

Abstract

The utility model relates to a plate bending angle on-line detection device which comprises a working table, the working table is located below a lower die, one side of the working table is provided with an installation support horizontally extending outwards, and two distance measuring sensors are installed on the installation support in the plate feeding direction. Detection heads of the two distance measuring sensors are both vertically upward so as to detect the distance between a point, right facing the distance measuring sensors, on the plate and the distance measuring sensors, and the two distance measuring sensors are both in signal connection with a main control system of the bending machine; according to the utility model, the bending angle of the plate can be automatically detected on line, the bending precision is improved, and the processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to an online detection device for plate bending angles. Background Art

[0002] Bending machines are commonly used in the mechanical processing industry. At present, bending machines have entered the digital and intelligent stage. When bending plates, existing bending machines cannot detect the actual bending angle of the plates online. In order to ensure the bending accuracy, mold detection is generally used. In actual operation, workers are required to perform multiple bends and multiple measurements, which is inefficient and requires high experience from the operating workers. Therefore, it is not intelligent enough. Summary of the invention

[0003] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art and to provide an online detection device for the bending angle of a plate, so as to realize online automatic detection of the bending angle of a plate.

[0004] The specific scheme of the utility model is: an online detection device for the bending angle of a plate, comprising a workbench, the workbench is located below the lower die, one side of the workbench is provided with a mounting bracket extending horizontally outward, two distance measuring sensors are installed on the mounting bracket along the feeding direction of the plate, the detection heads of the two distance measuring sensors are both vertically upward to detect the distance between the point on the plate that is directly opposite to the distance measuring sensor and the distance measuring sensor, and the two distance measuring sensors are both connected to the signal of the main control system of the bending machine.

[0005] Furthermore, the distance measuring sensor adopts a laser distance measuring sensor.

[0006] Furthermore, a horizontal mounting groove is provided on one side of the workbench facing the mounting bracket, and the mounting bracket is fixed in the mounting groove by bolts.

[0007] Furthermore, the cross-section of the mounting bracket is L-shaped, the long side of the L-shape extends horizontally, and the two ranging sensors are mounted on the long side of the L-shape.

[0008] Compared with the prior art, the utility model has the following advantages: online automatic detection of the bending angle of the plate is realized, the bending accuracy is improved, and the processing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram and a principle diagram of the utility model;

[0010] In the figure: 1. upper die; 2. plate; 3. grooved lower die; 4. workbench; 5. mounting bracket; 6. first distance measuring sensor; 7. second distance measuring sensor. DETAILED DESCRIPTION

[0011] See also Figure 1 The present embodiment is an online detection device for plate bending angle, comprising a workbench 4, the workbench 4 is located below the lower die, one side of the workbench 4 is provided with a mounting bracket 5 extending horizontally outward, the mounting bracket 5 is provided with a first distance measuring sensor 6 and a second distance measuring sensor 7 along the feeding direction of the plate 2, the first distance measuring sensor 6 detects in real time the vertical distance L1 between a point on the plate 2 directly above and the first distance measuring sensor 6, the second distance measuring sensor 7 detects in real time the vertical distance L2 between a point on the plate 2 directly above and the second distance measuring sensor 7, both distance measuring sensors are connected to the signal of the main control system of the bending machine.

[0012] Furthermore, the distance measuring sensor adopts a laser distance measuring sensor.

[0013] Furthermore, a horizontal mounting groove is provided on one side of the workbench 4 facing the mounting bracket 5, and the mounting bracket 5 is fixed in the mounting groove by bolts.

[0014] Furthermore, the cross section of the mounting bracket 5 is L-shaped, the long side of the L-shape extends in the horizontal direction, and the two distance measuring sensors are mounted on the long side of the L-shape.

[0015] The working principle of the utility model is as follows: Figure 1 Where A is the angle between the center line of the upper die 1 and the plate 2, that is, the bending angle to be detected. The first distance sensor 6 detects the distance L1 between the corresponding point on the plate 2 and the first distance sensor 6, and the second distance sensor 7 detects the distance L2 between the corresponding point on the plate 2 and the second distance sensor 7. The horizontal distance L between the two distance sensors is a fixed value. It can be seen from the figure that Tag(B)=(L2-L1) / L. The B value of the angle can be calculated by this formula. The bending angle A value to be detected can be calculated by another formula: A=90°-B. In the process of the upper die 1 pressing down to bend the plate 2 in the grooved lower die 3, the two ends of the plate are tilted, and the tilted angle is the bending angle A value. In this process, the A value changes continuously. By transmitting the A value obtained by the detection to the main control system of the bending machine in real time, when the measured A value reaches the target value, the upper die 1 stops pressing down to obtain the desired bending angle.

Claims

1. A device for online detection of plate bending angle, characterized by: The machine comprises a workbench, which is located below the lower die. A mounting bracket extending outward horizontally is provided on one side of the workbench. Two distance measuring sensors are mounted on the mounting bracket along the feeding direction of the plate. The detection heads of the two distance measuring sensors are both vertically upward to detect the distance between the point on the plate facing the distance measuring sensor and the distance measuring sensor. The two distance measuring sensors are both connected to the signal of the main control system of the bending machine.

2. The on-line detection device for plate bending angle according to claim 1 is characterized in that: The distance measuring sensor adopts a laser distance measuring sensor.

3. The on-line detection device for plate bending angle according to claim 1 is characterized in that: A horizontal mounting groove is arranged on one side of the workbench facing the mounting bracket, and the mounting bracket is fixed in the mounting groove by bolts.

4. The on-line detection device for plate bending angle according to claim 3 is characterized in that: The cross section of the mounting bracket is L-shaped, the long side of the L-shape extends horizontally, and the two distance measuring sensors are mounted on the long side of the L-shape.

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