Riveting shaft omission detection device

Abstract

The utility model relates to the technical field of mechanical automation detection, in particular to a riveting shaft omission detection device. A riveting shaft omission detection device comprises a supporting table, the upper surface of the supporting table is a planar table top, and a positioning part used for positioning a product is arranged on the table top; the device further comprises an inductance type proximity switch, a first preset position is arranged on the supporting table, the inductance type proximity switch is placed at the first preset position and connected with the supporting table, and the measuring end of the inductance type proximity switch protrudes out of the table top and points to the first direction. The device further comprises a signal conditioning module, and the inductance type proximity switch is in communication connection with the signal conditioning module. The system further comprises a programmable logic controller, and the signal conditioning module is in communication connection with the programmable logic controller. The system further comprises a red and green signal lamp which is in communication connection with the programmable logic controller. According to the utility model, whether the riveting of the shaft body of the product is missed is detected in an automatic mode.

Description

Technical Field

[0001] This utility model relates to the field of mechanical automation testing technology, and in particular to a device for detecting missing rivets. Background Technology

[0002] In the metal manufacturing industry, electric vehicle battery brackets (hereinafter referred to as products) and riveting shafts (hereinafter referred to as riveting shafts) are crucial components. The problem of missing riveting shafts on products directly affects customer assembly. When receiving customer complaints, the existing technology usually uses manual visual inspection to determine whether there are missing riveting shafts above the first preset position on the product. This traditional judgment method relies too much on manual labor. When workers are tired or not focused, it is very easy to miss or misread, leading to recording errors. Moreover, the traditional manual visual inspection method does not meet the demands of today's fast-paced development.

[0003] Therefore, the technical problem in the existing technology is how to detect whether a product has missing riveted shafts in an automated way. Utility Model Content

[0004] To address the technical problem of how to automatically detect whether a product has missing riveted shafts in the existing technology, this utility model provides a riveted shaft omission detection device.

[0005] A rivet shaft omission detection device includes a support platform, the upper surface of which is a planar table surface, and a positioning component for positioning the product is provided on the table surface.

[0006] It also includes an inductive proximity switch, with a first preset position set on the support platform. The inductive proximity switch is placed at the first preset position and connected to the support platform. The measuring end of the inductive proximity switch protrudes from the platform surface and points in a first direction; wherein, the first direction is perpendicular to the platform surface and away from the support platform.

[0007] It also includes a signal conditioning module, and the inductive proximity switch is connected to the signal conditioning module for communication.

[0008] It also includes a programmable logic controller (PLC), and the signal conditioning module communicates with the PLC.

[0009] It also includes traffic lights, which are connected to a programmable logic controller (PLC).

[0010] Furthermore, it also includes an infrared switch, with a second preset position set on the support platform. The infrared switch is placed at the second preset position and connected to the support platform. The measuring end of the infrared switch protrudes from the platform surface and points in the first direction.

[0011] The infrared switch is connected to the signal conditioning module.

[0012] Furthermore, the positioning component consists of multiple positioning blocks, which are spaced apart and placed parallel to each other on the table.

[0013] Furthermore, it also includes support feet. Along the first direction, the support platform is located between the support feet and the positioning component. The support feet are connected to the bottom surface of the support platform and are used to elevate the support platform.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] I. In this utility model, an inductive proximity switch is used to detect whether there is a missing riveted shaft above the first preset position. The inductive proximity switch then outputs the detection signal to the programmable logic controller (PLC) through a signal conditioning module. The PLC then determines the signal and controls the corresponding red and green indicator lights to illuminate, thereby realizing the automated detection of whether there is a missing riveted shaft in the product and solving the problems existing in the prior art.

[0016] II. In this utility model, an infrared switch is used to detect whether there is a missing riveted shaft above the second preset position. The infrared switch then outputs the detection signal to the programmable logic controller (PLC) through the signal conditioning module. The PLC then controls the corresponding red and green indicator lights to light up, thereby realizing the automated detection of whether there is a missing riveted shaft in the product. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the rivet shaft omission detection device of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the inductive proximity switch of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the infrared switch of this utility model;

[0020] Figure 4 This is a schematic diagram of the circuit control of this utility model.

[0021] The following are labeled in the diagram: support platform (1), tabletop (2), inductive proximity switch (3), signal conditioning module (4), programmable logic controller (5), red and green signal lights (6), infrared switch (7), positioning block (8), and support foot (9). Detailed Implementation

[0022] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0023] Example 1

[0024] like Figures 1-4 As shown, this embodiment proposes a rivet shaft omission detection device, which includes a support platform 1, the upper surface of the support platform 1 being a planar table surface 2, and a positioning component for positioning the product being provided on the table surface 2; it also includes an inductive proximity switch 3, with a first preset position set on the support platform 1, the inductive proximity switch 3 being placed at the first preset position and connected to the support platform 1, the measuring end of the inductive proximity switch 3 protruding from the table surface 2 and pointing in a first direction; wherein, the first direction is perpendicular to the table surface 2 and away from the support platform 1; it also includes a signal conditioning module 4, the inductive proximity switch 3 being communicatively connected to the signal conditioning module 4; it also includes a programmable logic controller 5, the signal conditioning module 4 being communicatively connected to the programmable logic controller 5; and it also includes a red and green signal light 6, the red and green signal light 6 being communicatively connected to the programmable logic controller 5.

[0025] The support platform 1 is used to support the product; the upper surface of the support platform 1 is a flat table surface 2, preferably, the table surface 2 is parallel to the horizontal plane; the table surface 2 is provided with positioning components for positioning the product, specifically, the positioning components are multiple positioning blocks 8, which are placed on the table surface 2 at intervals and parallel to each other; preferably, the positioning components also include multiple equal-height blocks, which are placed on the table surface 2 at intervals and parallel to each other, and the upper surfaces of all equal-height blocks are on the same plane and are parallel to the table surface 2 respectively. The equal-height blocks are used to make the bottom surface of the product parallel to the table surface 2. The technology of using equal-height blocks is common knowledge and will not be described in detail here.

[0026] Furthermore, the rivet shaft omission detection device also includes a support foot 9. Along the first direction, the support platform 1 is located between the support foot 9 and the positioning component. The support foot 9 is connected to the bottom surface of the support platform 1. The support foot 9 is used to elevate the support platform 1 to facilitate workers to operate the assembly on the support platform.

[0027] like Figures 1-4 As shown, the inductive proximity switch 3 is connected to the support platform 1 in a manner that is in the prior art, such as screw connection; the structure of the inductive proximity switch 3 is in the prior art and will not be described in detail here. The function of the inductive proximity switch 3 is to check the distance between itself and the object without contacting it; in this embodiment, the specific function of the inductive proximity switch 3 is to measure the distance between the measuring end of the inductive proximity switch 3 and the bottom end of the first shaft and output it to the signal conditioning module 4.

[0028] Signal conditioning module 4 is a common functional module in circuit systems. Its function is to receive the raw signal from inductive proximity switch 3, filter, amplify and convert the raw signal from inductive proximity switch 3 to analog-to-digital, and then output it to programmable logic controller 5.

[0029] The programmable logic controller 5, also known as a PLC, is used to receive the output signal from the signal conditioning module 4, perform calculations and comparisons, and then control the red and green signal lights 6 to change to different colors based on the results of the calculations and comparisons.

[0030] As can be seen from the background technology, the existing technical problem is how to detect whether a product has missing riveted shafts in an automated way.

[0031] In this embodiment, if the product fails to rivet the shaft above the first preset position, that is, fails to rivet the first shaft, the inductive proximity switch 3 will not detect the first shaft after the product is placed on the positioning component of the support platform 1. The inductive proximity switch 3 will output a first signal to the signal conditioning module 4, which will process the signal and output it to the programmable logic controller 5. The programmable logic controller 5 will then control the red and green indicator lights 6 to change their corresponding colors. Conversely, if the product does not fail to rivet the first shaft above the first preset position, the inductive proximity switch 3 will detect the first shaft after the product is placed on the positioning component of the support platform 1. The inductive proximity switch 3 will output a second signal to the signal conditioning module 4, which will process the signal and output it to the programmable logic controller 5. The programmable logic controller 5 will then control the red and green indicator lights 6 to change their corresponding colors.

[0032] In this embodiment, an inductive proximity switch 3 is used to detect whether there is a missing riveted shaft above the first preset position. The inductive proximity switch 3 then outputs the detection signal to the programmable logic controller 5 via the signal conditioning module 4. The programmable logic controller 5 then controls the corresponding red and green signal lights 6 to light up after making a judgment, thereby realizing the automatic detection of whether there is a missing riveted shaft in the product and solving the problems existing in the prior art.

[0033] The aforementioned use of inductive proximity switch 3 to detect whether the shaft is missing a riveted part is suitable for upright shaft mounting. For inverted shaft mounting, actual testing shows that using infrared switch 7 is more accurate. Therefore, this embodiment also includes the following technical solutions:

[0034] like Figures 1-4 As shown, the rivet shaft omission detection device also includes an infrared switch 7. A second preset position is set on the support platform 1. The infrared switch 7 is placed at the second preset position and connected to the support platform 1. The measuring end of the infrared switch 7 protrudes from the platform 2 and points in the first direction. The infrared switch 7 is communicatively connected to the signal conditioning module 4.

[0035] The infrared switch 7 can be connected to the support platform 1 using one of the existing technologies, such as screw connection.

[0036] For the first preset position and the second preset position, if there is a missing riveted shaft above either position, the red light of the red-green signal light 6 will light up. The green light of the red-green signal light 6 will only light up when there is no missing riveted shaft above any of the positions.

[0037] In this embodiment, the signal conditioning module 4 is also used to process the signal of the infrared switch 7 using a spectral analysis algorithm. Specifically, the signal of the infrared switch 7 is input to the signal conditioning module 4. After the signal conditioning module 4 processes the signal of the infrared switch 7 using a spectral analysis algorithm, it outputs the signal to the programmable logic controller 5. The programmable logic controller 5 performs calculations and comparisons on the signal and then controls the red and green signal lights 6 to change to different colors based on the results of the calculations and comparisons.

[0038] In this embodiment, the output signals of the inductive proximity switch 3 and the infrared switch 7 are processed by the signal conditioning module 4 and then sent to the programmable logic controller 5.

[0039] In this embodiment, if the product fails to rivet the shaft above the second preset position, that is, fails to rivet the second shaft, then after the product is placed on the positioning component of the support platform 1, the infrared switch 7 will not detect the second shaft above the second preset position. The infrared switch 7 will output a third signal to the signal conditioning module 4, which will process the signal and output it to the programmable logic controller 5. The programmable logic controller 5 will then control the red and green indicator lights 6 to change their corresponding colors. Conversely, if the product does not fail to rivet the second shaft above the second preset position, then after the product is placed on the positioning component of the support platform 1, the infrared switch 7 will detect the second shaft above the second preset position. The infrared switch 7 will output a fourth signal to the signal conditioning module 4, which will process the signal and output it to the programmable logic controller 5. The programmable logic controller 5 will then control the red and green indicator lights 6 to change their corresponding colors.

[0040] In this embodiment, an infrared switch 7 detects whether a shaft is missing above the second preset position. The infrared switch 7 then outputs the detection signal to the programmable logic controller 5 via the signal conditioning module 4. The programmable logic controller 5 then controls the corresponding red and green indicator lights 6 to light up, thereby realizing the automated detection of whether a product has a missing shaft and solving the problems existing in the prior art.

[0041] This embodiment illustrates the detection methods for whether the first shaft is missing from being riveted above the first preset position and whether the second shaft is missing from being riveted above the second preset position. In other optional embodiments, multiple other shafts can also be detected, such as whether the third shaft is missing from being riveted above the third preset position, whether the fourth shaft is missing from being riveted above the fourth preset position, and so on. The method described above is also used to detect whether the Nth shaft is missing from being riveted above the Nth preset position, with an inductive proximity switch 3 or an infrared switch 7 set at the Nth preset position.

[0042] In summary, this embodiment uses automated judgment technology to accurately detect whether the shaft is missing, reducing the risk of missing shafts caused by manual visual inspection and long-term fatigue work errors.

[0043] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rivet shaft missing detection device characterized by, The support table (1) includes a flat table top (2) on the upper surface of the support table (1), and a positioning component for positioning products is arranged on the table top (2); It also includes an inductive proximity switch (3) arranged at a first preset position on the support table (1) and connected with the support table (1), the measuring end of the inductive proximity switch (3) protrudes from the table top (2) and points to a first direction; wherein the first direction is perpendicular to the table top (2) and away from the support table (1); It also includes a signal conditioning module (4) in communication connection with the inductive proximity switch (3); It also includes a programmable logic controller (5) in communication connection with the signal conditioning module (4); It also includes a red-green signal lamp (6) in communication connection with the programmable logic controller (5).

2. The rivet shaft omission detection device according to claim 1, characterized by It also includes an infrared switch (7) arranged at a second preset position on the support table (1) and connected with the support table (1), the measuring end of the infrared switch (7) protrudes from the table top (2) and points to the first direction; The infrared switch (7) is in communication connection with the signal conditioning module (4).

3. The rivet shaft omission detection device according to claim 1, characterized by The positioning component is a plurality of positioning blocks (8) arranged on the table top (2) in parallel and at intervals.

4. The rivet shaft omission detection device according to claim 1, characterized by It also includes a support leg (9) located between the support table (1) and the positioning component along the first direction, the support leg (9) is connected with the bottom surface of the support table (1), and the support leg (9) is used to elevate the support table (1).

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