Wire harness appearance and electrical performance detection method

Abstract

The invention relates to a wire harness appearance and electrical performance detection method, which uses electrical performance detection and appearance detection integrated equipment, and comprises the following steps: a worker respectively puts connection structures at two ends of a wire harness product into two profiling fixing mechanisms for fixing; the control device controls the electric sliding rail to operate, the wire harness product is conveyed to the position below the visual inspection device, and the visual inspection device shoots images of the first connecting structure and the second connecting structure and uploads the images to the control device; the control device judges whether the appearance is qualified or not according to the image, and if the appearance is qualified, the control device instructs the electric sliding rail to convey the wiring harness product to the position below the two-dimensional code character detection device; the two-dimensional code character detection device scans the two-dimensional code on the second connecting structure and uploads the two-dimensional code to the control device, the control device associates the image with the two-dimensional code, and then the electric sliding rail conveys the wire harness product to the position below the electrical performance testing device; and the electrical performance testing device is used for testing the electrical performance of the wire harness product.

Description

Technical Field

[0001] The present invention relates to the technical field of wire harness detection, and in particular to a method for detecting the appearance and electrical performance of a wire harness. Background Art

[0002] After the wiring harness is assembled, it is necessary to conduct appearance inspection on the terminals at both ends of the wiring harness and conduct electrical performance inspection on the entire wiring harness, such as the wiring harness's conductivity, the resistance value of the resistor element, etc. Usually, the staff will first use the appearance inspection equipment to check whether the terminal appearance is qualified, and then use the electrical performance inspection equipment to conduct electrical performance inspection on the wiring harness that has passed the appearance inspection. The whole process needs to be carried out in two steps, operating two devices separately, which is cumbersome. Summary of the invention

[0003] In order to solve at least part of the above problems in the prior art, the present invention provides a method for detecting the appearance and electrical performance of a wiring harness, characterized in that an integrated device for electrical performance detection and appearance detection is used, which includes:

[0004] Electric slides;

[0005] A storage platform is arranged on the electric slide rail, and the storage platform has a contour fixing mechanism, and the contour fixing mechanism is used to fix the connection structure at both ends of the wiring harness product;

[0006] a visual inspection device located above the motorized slide and configured to acquire an image;

[0007] A two-dimensional code character detection device, which is located above the electric slide rail and is configured to recognize the two-dimensional code on the wiring harness product;

[0008] An electrical performance testing device, which is located above the electric slide rail and is configured to detect the electrical performance of the wiring harness product;

[0009] A control device, which is electrically or signal-connected to the electric slide rail, the visual inspection device, the two-dimensional code character detection device, and the electrical performance testing device;

[0010] The wiring harness appearance and electrical performance testing methods include:

[0011] The staff puts the connection structures at both ends of the wiring harness product into two contour fixing mechanisms for fixing; the wiring harness product includes a wiring harness and a first connection structure and a second connection structure located at both ends of the wiring harness, and the second connection structure has a QR code;

[0012] The control device controls the electric slide rail to move the wire harness product to the bottom of the visual inspection device. The visual inspection device takes images of the first connection structure and the second connection structure and uploads the images to the control device.

[0013] The control device determines whether the appearance is qualified based on the image. If the appearance is qualified, the control device instructs the electric slide rail to transport the wire harness product to the bottom of the QR code character detection device. If the appearance is determined to be unqualified, the control device will instruct the electric slide rail to transport the wire harness product to the initial loading position, and the staff will take the wire harness product off and put it into the NG product storage box;

[0014] The QR code character detection device scans the QR code on the second connection structure and uploads it to the control device, which associates the image with the QR code. The control device then instructs the electric slide rail to transport the wire harness product to the bottom of the electrical performance testing device.

[0015] The electrical performance testing device performs electrical performance tests on the wiring harness product and transmits the test data to the control device, which determines whether the electrical performance of the wiring harness product is qualified.

[0016] Furthermore, the integrated electrical performance inspection and appearance inspection equipment also includes a laser coding device, which is located on one side of the electric slide rail and is configured to mark the date on the wiring harness product. The laser coding device is electrically or signal-connected to the control device.

[0017] Furthermore, if the control device determines that the electrical performance of the wire harness product is qualified, the control device instructs the electric slide rail to transport the wire harness product to the laser coding device; if the electrical performance of the wire harness product is determined to be unqualified, the control device instructs the electric slide rail to transport the wire harness product to the initial loading position, and the staff removes the wire harness product and places it in the NG product storage box.

[0018] Furthermore, the method also includes marking the date on the second connecting structure by a laser coding device, and then the electric slide rail transports the wire harness product to the initial loading position, and the staff takes it down and places it in the qualified product storage area.

[0019] Furthermore, the first connection structure includes multiple terminals and a cylindrical ceramic shell, the second connection structure includes multiple terminals and a plastic shell, a resistor element is also arranged in the second connection structure, the plastic shell includes an integrally formed first square portion and a second square portion, wherein the length and width of the cross-section of the first square portion are both greater than the length and width of the cross-section of the second square portion, and a QR code is provided on the plane of the first square portion.

[0020] Furthermore, the first square portion of the second connecting structure is inserted into a contour fixing mechanism, and the lower portion of the first connecting structure is inserted into another contour fixing mechanism. The ends of the first connecting structure and the second connecting structure are exposed to the outside and face upward.

[0021] Furthermore, the integrated electrical performance detection and appearance detection device also includes a motor, which is arranged on the storage platform, and the contour fixing mechanism is arranged on the motor, and the motor is electrically connected or signal-connected to the control device.

[0022] Furthermore, after receiving the image, the image detection software of the control device first determines whether the fixation of the first connecting structure is tilted. If it is tilted, the motor is instructed to rotate and adjust the first connecting structure so that the first connecting structure is vertical. Thereafter, the image is taken again to detect whether the multiple terminals in the first connecting structure and the second connecting structure are parallel, and whether the ceramic shell and the plastic shell have defects. If the multiple terminals are parallel and both the ceramic shell and the plastic shell have no defects, the appearance is judged to be qualified; otherwise, the appearance is judged to be unqualified.

[0023] Further, the electrical performance testing device connects the first connection structure and the second connection structure to perform a wiring harness continuity test and a resistance test, detects the resistance value of the resistance element in the second connection structure, and transmits the detection data to the control device, and the control device determines whether the wiring harness is normally connected and whether the resistance element is qualified. If the wiring harness is normally connected and the resistance element is qualified, the electrical performance of the wiring harness product is determined to be qualified;

[0024] For wiring harness products with qualified electrical performance, the control device will associate the electrical performance test results with the QR code of the wiring harness product.

[0025] The present invention has at least the following beneficial effects: the detection method of the present invention can detect the parallelism of multiple terminals in the connection structure, detect whether the shell of the connection structure has defects, detect whether the wiring harness is conductive, and detect whether the resistance element in the connection structure is qualified. The detection is performed using an integrated device for electrical performance detection and appearance detection. The control device controls the electric slide rail to transport the wiring harness product to the visual inspection device, the two-dimensional code character detection device, the electrical performance test device, and the laser coding device for detection or coding. The detection process control is relatively intelligent, saving manual operation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to further illustrate the above and other advantages and features of various embodiments of the present invention, a more specific description of various embodiments of the present invention will be presented with reference to the accompanying drawings. It will be understood that these drawings only depict typical embodiments of the present invention and are therefore not to be considered as limiting the scope thereof. In the accompanying drawings, for clarity, identical or corresponding parts will be represented by identical or similar reference numerals.

[0027] Figure 1 A schematic structural diagram of a wiring harness product according to an embodiment of the present invention is shown;

[0028] Figure 2 A schematic top view of a first connection structure of a wiring harness product according to an embodiment of the present invention is shown;

[0029] Figure 3 A schematic top view of a second connection structure of a wiring harness product according to an embodiment of the present invention is shown;

[0030] Figure 4 A schematic diagram of an integrated electrical performance inspection and appearance inspection device according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0031] It should be noted that various components in the various drawings may be shown exaggeratedly for illustrative purposes and are not necessarily correct to scale.

[0032] In the present invention, each embodiment is only intended to illustrate the aspects of the present invention and should not be construed as limiting.

[0033] In the present invention, unless otherwise specified, the quantifiers "a", "an" and "an" do not exclude the presence of a plurality of elements.

[0034] It should also be pointed out that in the embodiments of the present invention, for the sake of clarity and simplicity, only a portion of the parts or components may be shown, but a person of ordinary skill in the art will understand that under the teachings of the present invention, required parts or components may be added as needed in specific scenarios.

[0035] It should also be pointed out that within the scope of the present invention, the terms "same", "equal", "equal to" and the like do not mean that the two values ​​are absolutely equal, but allow a certain reasonable error, that is, the terms also cover "substantially the same", "substantially equal", and "substantially equal to".

[0036] It should also be pointed out that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as explicitly or implicitly indicating relative importance.

[0037] In addition, the embodiments of the present invention describe the process steps in a specific order, but this is only for the convenience of distinguishing the steps, and does not limit the sequence of the steps. In different embodiments of the present invention, the sequence of the steps can be adjusted according to the adjustment of the process.

[0038] Figure 1 A schematic structural diagram of a wiring harness product according to an embodiment of the present invention is shown; Figure 2 A schematic top view of a first connection structure of a wiring harness product according to an embodiment of the present invention is shown; Figure 3 A schematic top view of a second connection structure of a wire harness product according to an embodiment of the present invention is shown.

[0039] like Figures 1 to 3 As shown, the wiring harness product includes a wiring harness 10 and a first connecting structure 11 and a second connecting structure 12 located at both ends of the wiring harness. The first connecting structure 11 includes a plurality of terminals and a cylindrical ceramic shell. The second connecting structure 12 includes a plurality of terminals and a plastic shell. The plastic shell includes a first square portion 13 and a second square portion 14 formed in one piece, wherein the length and width of the cross section of the first square portion 13 are both greater than the length and width of the cross section of the second square portion 14, and the first square portion 13 is closer to the wiring harness. In one embodiment of the present invention, a QR code 15 is provided on the plane of the first square portion 13. A resistor element is also provided in the second connecting structure 12. The wiring harness 10 includes a plurality of wires, and terminals are connected to both ends of each wire.

[0040] Figure 4 A schematic diagram of an integrated electrical performance inspection and appearance inspection device according to an embodiment of the present invention is shown.

[0041] like Figure 1 As shown, an integrated electrical performance inspection and appearance inspection device includes a workbench 101, an electric slide rail 102, a storage platform 103, a visual inspection device 104, a two-dimensional code character detection device 105, an electrical performance testing device 106, a laser coding device 107 and a control device.

[0042] The electric slide rail 102 is arranged on the workbench 101. The storage platform 103 is arranged on the electric slide rail 102, and the electric slide rail 102 can move the storage platform 103 to the visual inspection device 104, the two-dimensional code character detection device 105, the electrical performance testing device 106 and the laser coding device 107. The motor is fixed on the storage platform 103, and the profiling fixing mechanism is arranged on the motor, and the profiling fixing mechanism is used to fix the connecting structure at both ends of the wiring harness. The motor can drive the profiling fixing mechanism to rotate. The shape of the profiling fixing mechanism is complementary to the side shape of the connecting structure, and can clamp the lower part of the connecting structure and expose the upper part. The number of the profiling fixing mechanisms is 2, which respectively fix the connecting structures at both ends of the wiring harness. The profiling fixing mechanism has an opening to place the connecting structure. The profiling fixing mechanism will not completely surround the connecting structure. The material of the profiling fixing mechanism has a certain elasticity for fixing.

[0043] The first connection structure is cylindrical and may be tilted when manually placed in the contour fixing mechanism. The contour fixing mechanism can be driven by a motor to rotate a certain angle for adjustment so that the first connection structure is vertical.

[0044] The visual inspection device 104 is disposed above the electric slide rail and is used to obtain an image of the terminal. The visual inspection device 104 is a camera.

[0045] The two-dimensional code character detection device 105 is located above the electric slide rail 102 and is used to identify the two-dimensional code on the connection structure.

[0046] The electrical performance test device 106 is located above the electric slide rail 102 and can connect the connection structures at both ends of the wiring harness for conducting the wiring harness and testing the resistance of the internal resistance elements of the connection structure. The conducting test is to test whether the wiring harness is short-circuited or open-circuited.

[0047] The laser marking device 107 is disposed on the workbench 101 and is located on the right side of the electric slide rail 102. The laser marking device 107 is used to mark the date on the side of the connection structure of the wire harness. In one embodiment of the present invention, the date is marked on the side of the second connection structure 12.

[0048] The control device (not shown) is electrically connected or signal-connected to the electric slide 102, the motor, the visual inspection device 104, the two-dimensional code character detection device 105, the electrical performance test device 106, and the laser coding device 107. The control device is used to control the operation of the electric slide 102, the motor, the visual inspection device 104, the two-dimensional code character detection device 105, the electrical performance test device 106, and the laser coding device 107. The control device is, for example, a computer.

[0049] The control device has built-in image detection software, which can use the image obtained by the visual inspection device 104 to determine whether the appearance of the terminal is qualified. The image detection software usually needs to detect whether the end of the terminal has defects, such as pits, and also performs ceramic terminal parallelism position detection (detecting whether multiple terminals are parallel) and open / closed identification (determining whether the ceramic connection structure is placed correctly).

[0050] The above-mentioned integrated electrical performance testing and appearance testing equipment also includes an NG product storage box, which is placed on the workbench 101 and is used to store unqualified wire harness products.

[0051] The steps for testing wiring harness products using the above-mentioned integrated electrical performance testing and appearance testing equipment are as follows:

[0052] Step 1, manual loading, the staff puts the connection structures at both ends of the wiring harness product into two contour fixing mechanisms for fixing. In one embodiment of the present invention, the first square portion 13 of the second connection structure 12 is inserted into one contour fixing mechanism, and the lower portion of the first connection structure 11 is inserted into another contour fixing mechanism. The ends of the first connection structure 11 and the second connection structure 12 are both exposed to the outside, and the ends face upward. The first terminal structure 11 is located on the left side of the second terminal structure 12.

[0053] After loading, the staff operates on the control device to start the inspection process. The control device controls the electric slide 102, the motor, the visual inspection device 104, the two-dimensional code character detection device 105, the electrical performance test device 106 and the laser coding device 107 to operate according to the set program, as follows:

[0054] Step 2, the control device controls the electric slide 102 to run, and transports the wire harness product to the bottom of the visual inspection device 104. The visual inspection device 104 takes images of the first connection structure 11 and the second connection structure 12, and uploads the images to the control device. The image detection software of the control device first determines whether the fixation of the first connection structure 11 is tilted. If it is tilted, the motor is instructed to rotate and adjust the first connection structure 11 so that the first connection structure 11 is vertical. Then the image is taken again to detect whether the multiple terminals in the first connection structure 11 and the second connection structure 12 are parallel, and whether the ceramic shell and the plastic shell have defects, such as pits. If the multiple terminals are parallel and there are no defects in the ceramic shell and the plastic shell, the product appearance is determined to be qualified, otherwise, the appearance is determined to be unqualified; if the product appearance is determined to be qualified, the control device will instruct the electric slide 102 to transport the wire harness product to the bottom of the two-dimensional code character detection device 105. If the product appearance is determined to be unqualified, the control device will instruct the electric slide 102 to transport the wire harness product to the initial loading position, and the staff will remove the wire harness product and put it into the NG product storage box.

[0055] Step 3. After the wiring harness product is transported to the bottom of the QR code character detection device 105, the QR code character detection device 105 scans the QR code on the second connecting structure 12 and uploads it to the control device. The control device associates the image obtained by the visual inspection device 104 with the QR code, and then the control device instructs the electric slide rail 102 to transport the wiring harness product to the bottom of the electrical performance testing device 106.

[0056] Step 4, the electrical performance testing device 106 connects the first connection structure 11 and the second connection structure 12 to perform a wiring harness conduction test and a resistance test, detects the resistance value of the resistance element in the second connection structure 12, and transmits the detection data to the control device, which determines whether the wiring harness is normally connected, whether there is a short circuit or an open circuit, and whether the resistance value of the resistance element is qualified. If the wiring harness is normally connected and the resistance element is qualified, the electrical performance of the wiring harness product is determined to be qualified, and the control device instructs the electric slide 102 to transport the wiring harness product to the laser coding device 107. Otherwise, the electrical performance of the wiring harness product is determined to be unqualified, and the control device instructs the electric slide 102 to transport the wiring harness product to the initial loading position, and the staff removes the wiring harness product and puts it into the NG product storage box. In one embodiment of the present invention, for wiring harness products with qualified electrical performance, the control device will associate the electrical performance test results with the QR code of the wiring harness product.

[0057] Step 5, when the wire harness product is transported to the laser coding device 107, the control device will instruct the laser coding device 107 to mark the date on the side of the second connecting structure 12, and then the control device will instruct the electric slide rail to transport the wire harness product to the initial loading position, and the staff will take it down and place it in the qualified product storage area.

[0058] Although some embodiments of the present invention have been described in this application document, it will be appreciated by those skilled in the art that these embodiments are merely shown as examples. Those skilled in the art may conceive of numerous variations, alternatives, and improvements under the teachings of the present invention without departing from the scope of the present invention. The appended claims are intended to define the scope of the present invention and to cover methods and structures within the scope of these claims themselves and their equivalents.

Claims

1. A method for detecting the appearance and electrical performance of a wiring harness, characterized in that: Use electrical performance testing and appearance testing equipment, which includes: Electric slides; A storage platform is arranged on the electric slide rail, and the storage platform has a contour fixing mechanism, and the contour fixing mechanism is used to fix the connection structure at both ends of the wiring harness product; a visual inspection device located above the motorized slide and configured to acquire an image; A two-dimensional code character detection device, which is located above the electric slide rail and is configured to recognize the two-dimensional code on the wiring harness product; An electrical performance testing device, which is located above the electric slide rail and is configured to detect the electrical performance of the wiring harness product; A control device, which is electrically or signal-connected to the electric slide rail, the visual inspection device, the two-dimensional code character detection device, and the electrical performance testing device; The wiring harness appearance and electrical performance testing methods include: The staff puts the connection structures at both ends of the wiring harness product into two contour fixing mechanisms for fixing; the wiring harness product includes a wiring harness and a first connection structure and a second connection structure located at both ends of the wiring harness, and the second connection structure has a QR code; The control device controls the electric slide rail to move the wire harness product to the bottom of the visual inspection device. The visual inspection device takes images of the first connection structure and the second connection structure and uploads the images to the control device. The control device determines whether the appearance is qualified based on the image. If the appearance is qualified, the control device instructs the electric slide rail to transport the wire harness product to the bottom of the QR code character detection device. If the appearance is determined to be unqualified, the control device will instruct the electric slide rail to transport the wire harness product to the initial loading position, and the staff will take the wire harness product off and put it into the NG product storage box; The QR code character detection device scans the QR code on the second connection structure and uploads it to the control device, which associates the image with the QR code. The control device then instructs the electric slide rail to transport the wire harness product to the bottom of the electrical performance testing device. The electrical performance testing device performs electrical performance tests on the wiring harness product and transmits the test data to the control device, which determines whether the electrical performance of the wiring harness product is qualified.

2. The method for detecting the appearance and electrical performance of a wiring harness according to claim 1, characterized in that: The integrated electrical performance inspection and appearance inspection equipment also includes a laser coding device, which is located on one side of the electric slide rail and is configured to mark the date on the wiring harness product. The laser coding device is electrically connected or signal-connected to the control device.

3. The method for detecting the appearance and electrical performance of a wiring harness according to claim 2, characterized in that: It also includes that if the control device determines that the electrical performance of the wire harness product is qualified, the control device instructs the electric slide rail to transport the wire harness product to the laser coding device; if the electrical performance of the wire harness product is determined to be unqualified, the control device instructs the electric slide rail to transport the wire harness product to the initial loading position, and the staff removes the wire harness product and places it in the NG product storage box.

4. The method for detecting the appearance and electrical performance of a wiring harness according to claim 3, characterized in that: The method also includes marking the date on the second connecting structure by a laser coding device, and then the electric slide rail transports the wire harness product to an initial loading position, and the staff takes it down and places it in a qualified product storage area.

5. The method for detecting the appearance and electrical performance of a wiring harness according to claim 1, characterized in that: The first connection structure includes multiple terminals and a cylindrical ceramic shell, the second connection structure includes multiple terminals and a plastic shell, and a resistor element is also arranged in the second connection structure. The plastic shell includes an integrally formed first square portion and a second square portion, wherein the length and width of the cross-section of the first square portion are both greater than the length and width of the cross-section of the second square portion, and a QR code is provided on the plane of the first square portion.

6. The method for detecting the appearance and electrical performance of a wiring harness according to claim 5, characterized in that: The first square portion of the second connecting structure is inserted into a contour fixing mechanism, and the lower portion of the first connecting structure is inserted into another contour fixing mechanism. The ends of the first connecting structure and the second connecting structure are exposed to the outside and face upward.

7. The method for detecting the appearance and electrical performance of a wiring harness according to claim 6, characterized in that: The integrated electrical performance detection and appearance detection device also includes a motor, which is arranged on the storage platform, and the contour fixing mechanism is arranged on the motor, and the motor is electrically connected or signal-connected to the control device.

8. The method for detecting the appearance and electrical performance of a wiring harness according to claim 7, characterized in that: After receiving the image, the image detection software of the control device first determines whether the fixation of the first connecting structure is tilted. If it is tilted, the motor is instructed to rotate and adjust the first connecting structure so that the first connecting structure is vertical. Then the image is taken again to detect whether the multiple terminals in the first connecting structure and the second connecting structure are parallel, and whether the ceramic shell and the plastic shell have defects. If the multiple terminals are parallel and both the ceramic shell and the plastic shell have no defects, the appearance is judged to be qualified; otherwise, the appearance is judged to be unqualified.

9. The method for detecting the appearance and electrical performance of a wiring harness according to claim 5, characterized in that: The electrical performance testing device connects the first connection structure and the second connection structure to perform a wiring harness continuity test and a resistance test, detects the resistance value of the resistance element in the second connection structure, and transmits the detection data to the control device, and the control device determines whether the wiring harness is normally connected and whether the resistance element is qualified. If the wiring harness is normally connected and the resistance element is qualified, the electrical performance of the wiring harness product is determined to be qualified; For wiring harness products with qualified electrical performance, the control device will associate the electrical performance test results with the QR code of the wiring harness product.

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