An automatic riveting device

Abstract

The utility model belongs to sheet metal processing technical field especially is a kind of automatic riveting press device, including support frame, the inner bottom wall of support frame is fixedly connected with workbench, the inner wall of workbench is fixedly connected with positioning column, the upper surface of support frame is fixedly connected with connecting frame, the top of connecting frame is provided with controller, the inside of connecting frame is provided with electric push rod, the telescopic end of electric push rod is provided with pressure sensor, the inductive end of pressure sensor is fixedly connected with pressing rod, the below of connecting frame is provided with two detection cameras, the right side of connecting frame is fixedly connected with image processor, and the visual positioning system formed by detection camera and image processor can accurately identify the rivet position placed at the positioning column of workbench, after manually moving rivet to target position, system automatically triggers electric push rod to start, and real-time feedback pressure data to controller through pressure sensor, forms closed-loop control system, accurately controls pressing strength and stroke.

Description

Technical Field

[0001] This utility model belongs to the field of sheet metal processing technology, and specifically relates to an automatic riveting device. Background Technology

[0002] Sheet metal riveting is a process that uses mechanical pressure or impact to cause plastic deformation of rivets, thereby tightly connecting two or more sheet metal parts into a whole. This process does not rely on additional connecting parts such as welding and bolts, but uses mechanical interlocking after material deformation to achieve fixation, and belongs to a type of threadless mechanical connection technology.

[0003] However, in sheet metal riveting operations, the traditional manual positioning and manual operation mode has significant limitations. Operators need to visually align the sheet metal parts to the appropriate position and then manually start the equipment to complete the pressing. This process is not only inefficient, but the positioning accuracy also depends on experience, resulting in a high misalignment rate. At the same time, manually starting and stopping the equipment can easily cause quality problems such as missing riveting and over-pressing, making it inconvenient to work.

[0004] To address the aforementioned problems, this application proposes an automatic riveting device. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides an automatic riveting device that can improve the efficiency of sheet metal riveting operations.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic riveting device, comprising a support frame, a worktable fixedly connected to the inner bottom wall of the support frame, a positioning column fixedly connected to the inner wall of the worktable, a connecting frame fixedly connected to the upper surface of the support frame, a controller disposed above the connecting frame, an electric push rod disposed inside the connecting frame, a pressure sensor disposed at the telescopic end of the electric push rod, a pressing rod fixedly connected to the sensing end of the pressure sensor, two detection cameras disposed below the connecting frame, and an image processor fixedly connected to the right side of the connecting frame.

[0007] As a preferred embodiment of this utility model, the bottom surface of the support frame is fixedly connected with two sets of fixed columns, and the bottom end of each fixed column is fixedly connected with a placement plate.

[0008] As a preferred embodiment of this utility model, a reinforcing frame is fixedly connected to the upper surface of the support frame, and the inner wall of the reinforcing frame is fixedly connected to the outer surface of the connecting frame.

[0009] As a preferred embodiment of this utility model, the bottom surface of the controller is fixedly connected to a mounting plate, and the bottom surface of the mounting plate is fixedly connected to the upper surface of the connecting frame.

[0010] As a preferred embodiment of this utility model, a fixed frame is fixedly connected to the upper surface of the connecting frame, and the inner wall of the fixed frame is fixedly connected to the outer surface of the electric push rod.

[0011] As a preferred embodiment of this utility model, a fixed platform is fixedly connected to the upper surface of each detection camera, and the upper surface of each fixed platform is fixedly connected to the inner top wall of the connecting frame.

[0012] As a preferred embodiment of this utility model, the telescopic end of the electric push rod is fixedly connected to a connecting ring, and the bottom surface of the connecting ring is fixedly connected to the upper surface of the pressure sensor.

[0013] As a preferred embodiment of this utility model, a reinforcing rod is fixedly connected inside the pressing rod, and the reinforcing rod is made of alloy tool steel.

[0014] Compared with existing technologies, the advantages of this invention are as follows: A visual positioning system composed of a detection camera and an image processor can accurately identify the position of rivets placed on the positioning post of the worktable. When the rivet is manually moved to the target position, the system automatically triggers the electric push rod to start and feeds back pressure data to the controller in real time through a pressure sensor, forming a closed-loop control system. This system precisely controls the pressing force and stroke, thereby achieving automatic riveting. Compared with traditional manual operation, this technical solution eliminates the need for frequent manual adjustments and manual start / stop of the equipment. It can stably control the pressure value during the riveting process within a preset range, effectively avoiding problems such as missed riveting, incorrect riveting, or uneven pressure caused by human error. This significantly improves riveting accuracy and quality stability. Furthermore, the entire automatic riveting process requires no frequent manual intervention, greatly shortening the processing time per piece, reducing labor costs and labor intensity, making it more suitable for automated mass production scenarios, and comprehensively improving the processing efficiency of sheet metal parts. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connecting frame in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the electric push rod in this utility model;

[0019] Figure 4 This is a cross-sectional view of the pressing rod in this utility model;

[0020] Figure 5 This is a schematic diagram of the connecting frame in this utility model;

[0021] In the diagram: 1. Support frame; 2. Workbench; 3. Placement plate; 4. Positioning column; 5. Fixing column; 6. Controller; 7. Mounting plate; 8. Connecting frame; 9. Reinforcing frame; 10. Electric push rod; 11. Fixing frame; 12. Fixing platform; 13. Detection camera; 14. Connecting ring; 15. Pressure sensor; 16. Pressing rod; 17. Image processor; 18. Reinforcing rod. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0023] Please see Figure 1-5 The present invention provides the following technical solution: an automatic riveting device, including a support frame 1, a workbench 2 fixedly connected to the inner bottom wall of the support frame 1, a positioning column 4 fixedly connected to the inner wall of the workbench 2, a connecting frame 8 fixedly connected to the upper surface of the support frame 1, a controller 6 provided above the connecting frame 8, an electric push rod 10 provided inside the connecting frame 8, a pressure sensor 15 provided at the telescopic end of the electric push rod 10, a pressing rod 16 fixedly connected to the sensing end of the pressure sensor 15, two detection cameras 13 provided below the connecting frame 8, and an image processor 17 fixedly connected to the right side of the connecting frame 8;

[0024] In this embodiment, the detection camera 13 and the image processor 17 constitute a vision detection unit, which collects the position image information of rivets and sheet metal parts on the workbench 2 in real time. At the same time, the operator can manually calibrate their positions. After manual adjustment, the detection camera 13 transmits the collected image data to the image processor 17. After image recognition and data processing, the accurate position information is fed back to the controller 6. When the controller 6 determines that the rivet position has reached the preset standard, it automatically sends a command to start the extension and retraction of the electric push rod 10. In conjunction with the pressure sensor 15, the riveting pressure is monitored and adjusted in real time, thereby realizing precise automatic riveting operation. This retains the advantages of flexible manual adjustment and ensures the quality and efficiency of riveting through automated control.

[0025] Specifically, two sets of fixing columns 5 are fixedly connected to the bottom surface of the support frame 1. Each fixing column 5 has a placement plate 3 fixedly connected to its bottom end. In this embodiment, the placement plate 3 is fixed to the bottom of the support frame 1 by fixing columns 5, thereby increasing the contact area and ensuring stable placement of the equipment.

[0026] Specifically, a reinforcing frame 9 is fixedly connected to the upper surface of the support frame 1. The inner wall of the reinforcing frame 9 is fixedly connected to the outer surface of the connecting frame 8. In this embodiment, the connection between the connecting frame 8 and the support frame 1 can be fixed by the reinforcing frame 9, thereby improving the firmness of the equipment connection.

[0027] Specifically, the bottom surface of the controller 6 is fixedly connected to the mounting plate 7, and the bottom surface of the mounting plate 7 is fixedly connected to the upper surface of the connecting frame 8. In this embodiment, the controller 6 can be fixed by the mounting plate 7. At the same time, the controller 6 is a PLC (Programmable Logic Controller), which is a digital computing and operating electronic system designed for industrial automation control scenarios. It stores instructions through a programmable memory and performs logical operations, sequential control, timing, counting and arithmetic operations to control various machines or production processes.

[0028] Specifically, a fixing frame 11 is fixedly connected to the upper surface of the connecting frame 8. The inner wall of the fixing frame 11 is fixedly connected to the outer surface of the electric push rod 10. In this embodiment, the electric push rod 10 can be fixed to the connecting frame 8 through the fixing frame 11, thereby enabling the electric push rod 10 to be used stably.

[0029] Specifically, each detection camera 13 has a fixed platform 12 fixedly connected to its upper surface, and the upper surface of each fixed platform 12 is fixedly connected to the inner top wall of the connecting frame 8. In this embodiment, the detection camera 13 is fixed by the fixed platform 12. At the same time, the detection camera 13 is a 3D structured light camera. Its working principle is to actively project a specific optical pattern onto the surface of the workpiece, and then use the camera to receive the distortion information of the reflected light, thereby calculating the three-dimensional spatial coordinates of the object.

[0030] Specifically, a connecting ring 14 is fixedly connected to the telescopic end of the electric push rod 10. The bottom surface of the connecting ring 14 is fixedly connected to the upper surface of the pressure sensor 15. In this embodiment, the pressure sensor 15 can be fixed to the electric push rod 10 through the connecting ring 14. At the same time, the pressure sensor 15 is a strain gauge pressure sensor, which is a mechanical quantity measurement device based on the strain effect. It converts the deformation of the elastic body under pressure into a change in resistance, and then converts it into an electrical signal output through a Wheatstone bridge circuit.

[0031] Specifically, a reinforcing rod 18 is fixedly connected inside the pressing rod 16. The reinforcing rod 18 is made of alloy tool steel. In this embodiment, the reinforcing rod 18 can improve the service life of the pressing rod 16 by utilizing its own material.

[0032] The working principle and usage process of this utility model are as follows: First, the operator places the sheet metal parts and rivets on the workbench 2 and uses the positioning pins 4 for initial positioning. At this time, the vision detection unit consisting of the detection camera 13 and the image processor 17 begins to work. The detection camera 13 actively projects an optical pattern onto the surface of the workpiece, receives the reflected light, calculates the three-dimensional position information of the workpiece, and transmits the image data to the image processor 17 for recognition and processing. If there is a deviation in the rivet position, the operator can manually adjust it. After adjustment, the system collects data again and feeds it back to the controller 6. When the controller 6 determines that the position has reached the preset standard, it automatically sends a command to start the extension and retraction of the electric push rod 10. The electric push rod 10 drives the pressure sensor 15 and the pressing rod 16 downward through the connecting ring 14. The alloy tool steel reinforcing rod 18 inside the pressing rod 16 applies pressure to the rivet. During this process, the pressure sensor 15 monitors the pressure value in real time and feeds it back to the controller 6, forming a closed-loop control system. This precisely controls the pressing force and stroke until the riveting operation is completed, thereby achieving efficient and accurate automatic riveting operations and significantly improving the convenience and reliability of sheet metal processing.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic riveting device, characterized in that: The system includes a support frame (1), a workbench (2) is fixedly connected to the inner bottom wall of the support frame (1), a positioning column (4) is fixedly connected to the inner wall of the workbench (2), a connecting frame (8) is fixedly connected to the upper surface of the support frame (1), a controller (6) is provided above the connecting frame (8), an electric push rod (10) is provided inside the connecting frame (8), a pressure sensor (15) is provided at the telescopic end of the electric push rod (10), a pressing rod (16) is fixedly connected to the sensing end of the pressure sensor (15), two detection cameras (13) are provided below the connecting frame (8), and an image processor (17) is fixedly connected to the right side of the connecting frame (8).

2. The automatic riveting device according to claim 1, characterized in that: The bottom surface of the support frame (1) is fixedly connected to two sets of fixed columns (5), and the bottom end of each fixed column (5) is fixedly connected to a placement plate (3).

3. The automatic riveting device according to claim 1, characterized in that: The upper surface of the support frame (1) is fixedly connected to a reinforcing frame (9), and the inner wall of the reinforcing frame (9) is fixedly connected to the outer surface of the connecting frame (8).

4. The automatic riveting device according to claim 1, characterized in that: The bottom surface of the controller (6) is fixedly connected to the mounting plate (7), and the bottom surface of the mounting plate (7) is fixedly connected to the upper surface of the connecting frame (8).

5. An automatic riveting device according to claim 1, characterized in that: The upper surface of the connecting frame (8) is fixedly connected to a fixing frame (11), and the inner wall of the fixing frame (11) is fixedly connected to the outer surface of the electric push rod (10).

6. An automatic riveting device according to claim 1, characterized in that: Each of the detection cameras (13) has a fixed platform (12) fixedly connected to its upper surface, and the upper surface of each fixed platform (12) is fixedly connected to the inner top wall of the connecting frame (8).

7. An automatic riveting device according to claim 1, characterized in that: The telescopic end of the electric push rod (10) is fixedly connected to a connecting ring (14), and the bottom surface of the connecting ring (14) is fixedly connected to the upper surface of the pressure sensor (15).

8. An automatic riveting device according to claim 1, characterized in that: The pressing rod (16) is internally fixedly connected to a reinforcing rod (18), which is made of alloy tool steel.

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