Plug connector defect detection device, detection system and plug connector defect detection method

Abstract

The invention relates to a plug connector defect detection device, a detection system and a plug connector defect detection method. The plug connector defect detection device comprises a fixed support; the rotary driving part is arranged on the fixed bracket; and the first imaging equipment is mounted on the rotary driving part, the rotary driving part is used for driving the first imaging equipment to rotate relative to the fixed bracket, and the first imaging equipment is a depth camera. According to the plug connector defect detection device provided by the embodiment of the invention, the rotary driving part is arranged, and the depth camera is mounted on the rotary driving part, so that the rotary driving part can drive the depth camera to rotate. When defect detection is carried out on the plug connector, if a visual blind area is encountered and part of PINs cannot be detected, the depth camera can be controlled to rotate by rotating the driving piece, so that the light emitting module of the depth camera moves to the other side of the receiving lens, the visual blind area can be eliminated, and comprehensive coverage detection of the PINs is realized; the problem of missing detection of the PINs is solved.

Description

Technical Field

[0001] The present application relates to the technical field of defect detection, and in particular to a connector defect detection device, a detection system and a connector defect detection method. Background Art

[0002] A connector is a connection device used to connect two active devices to transmit current or signals. The connector is one of the necessary core basic components in the circuit system. Its application field is relatively wide, covering vehicles, military equipment, computer equipment, smart home and other fields. Taking the batteries used in new energy vehicles as an example, the plug-in and pull-out operations of the connectors are involved many times in the production of the battery. For example, during the performance test of the battery PCBA board after production, there are no less than 3 plug-in and pull-out actions of the connector. It can be seen that ensuring the reliable performance of the connector is conducive to ensuring the production efficiency of the battery. Therefore, it is necessary to detect defects in the connector before it is put into use.

[0003] The defect detection of the connector mainly involves detecting whether the PIN pins in the connector are abnormal. When using the existing detection device for detection, some PIN pins are often missed. Summary of the invention

[0004] In view of the above problems, the present application provides a connector defect detection device, a detection system and a connector defect detection method, which can perform comprehensive coverage detection on the PIN pins of the connector to solve the problem of missed detection of the PIN pins.

[0005] In a first aspect, the present application provides a connector defect detection device, which includes: a fixed bracket; a rotating drive member, which is arranged on the fixed bracket; and a first imaging device, which is installed on the rotating drive member, and the rotating drive member is used to drive the first imaging device to rotate relative to the fixed bracket, and the first imaging device is a depth camera.

[0006] The connector defect detection device in the embodiment of the present application is provided with a rotating drive member and the depth camera is installed on the rotating drive member, so that the rotating drive member can drive the depth camera to rotate. When performing defect detection on the connector, if a visual blind spot is encountered so that some PIN pins cannot be detected, the rotation of the depth camera can be controlled by the rotating drive member, so that the light transmitting module of the depth camera moves to the other side of the receiving lens. In this way, the visual blind spot can be eliminated, and the full coverage detection of the PIN pin can be achieved to solve the problem of missed detection of the PIN pin.

[0007] In some embodiments, the connector defect detection device further includes a second imaging device, which is fixedly mounted on the fixed bracket, and the second imaging device is a 2D camera. By combining the 2D camera and the depth camera, more detection items can be performed on the connector to make the detection more comprehensive.

[0008] In some embodiments, the rotary drive member has a rotary motion part, the rotary motion part is connected to a mounting frame, the first imaging device is rotatably connected to the mounting frame, and a locking member is further provided between the first imaging device and the mounting frame, the locking member is used to lock the first imaging device and the mounting frame so that the first imaging device maintains a fixed installation angle relative to the mounting frame; wherein the rotation axis of the first imaging device relative to the mounting frame is not parallel to the rotation axis of the rotary motion part. On the basis that the rotary drive member can drive the first imaging device to rotate relative to the fixed bracket, the installation angle of the first imaging device relative to the mounting frame can be further adjusted, so that the depth camera can have a more flexible shooting angle. In this way, it is beneficial to further expand the detection range of the depth camera, and when detecting various types and specifications of connectors, the visual blind spots can be eliminated to achieve comprehensive coverage detection of PIN pins.

[0009] In some embodiments, an arc-shaped through hole is provided on the mounting frame, the locking member is a bolt, a threaded hole is provided on the first imaging device, and the bolt is passed through the arc-shaped through hole and connected to the threaded hole. The bolt is passed through the arc-shaped through hole and connected to the threaded hole. When the bolt is tightened, the bolt can lock the first imaging device and the mounting frame, and when the bolt is loosened, the first imaging device can rotate relative to the mounting frame. Thus, the arc-shaped through hole, the bolt and the threaded hole constitute the installation angle adjustment structure of the first imaging device, which is not only simple in structure, but also convenient in adjustment process.

[0010] In some embodiments, the rotation axis of the first imaging device relative to the mounting bracket is perpendicular to the rotation axis of the rotary motion portion, so that the first imaging device can have a larger angle adjustment range relative to the fixed bracket.

[0011] In some embodiments, the mounting frame includes a first mounting plate and a second mounting plate that are perpendicular to each other, the first mounting plate is connected to the rotating motion part and the first mounting plate and the rotation axis of the rotating motion part are perpendicular, and the first imaging device is hinged to the second mounting plate. The mounting frame includes a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are perpendicular to each other, on this basis, the first mounting plate is perpendicularly connected to the rotating motion part, and the first imaging device is hinged to the second mounting plate, so that the rotation axis of the first imaging device relative to the mounting frame can be perpendicular to the rotation axis of the rotating motion part.

[0012] In some embodiments, the connector defect detection device further comprises a linear motion driver, the linear motion driver having a linear motion portion, and the fixed bracket is mounted on the linear motion portion. By providing the linear motion driver, the linear motion driver can drive the fixed bracket to move along a straight line, so that the position of the depth camera can be adjusted to adapt to the detection of connectors of different types and specifications.

[0013] In a second aspect, the present application provides a detection system, which includes: a detection platform, which can fix a connector to be detected; and a connector defect detection device, which is the connector defect detection device in any of the above embodiments.

[0014] In a third aspect, the present application provides a method for detecting connector defects, comprising:

[0015] Take a qualified connector and take three first characteristic points on the housing of the qualified connector;

[0016] Based on the three first characteristic points, a first reference plane perpendicular to the PIN of the qualified connector is formed by fitting;

[0017] Obtaining a first distance from a tip of each PIN in the qualified connector to the first reference plane, and obtaining an average value of the first distances;

[0018] Taking the first reference plane as a reference plane and taking the average value as a first reference distance;

[0019] Take the connector to be detected, obtain the second distance from the tip of each PIN pin in the connector to be detected to the reference surface, and determine whether there is an abnormal height of the PIN pin according to the difference between the second distance and the first reference distance.

[0020] In some embodiments, the connector defect detection method further includes:

[0021] Take a qualified connector and take a reference line in a plane perpendicular to the PIN pins of the qualified connector, wherein the reference line is parallel to the row direction in which the PIN pins are arranged;

[0022] Obtaining an average distance from each row of PIN needles to the reference line as a second reference distance for each row of PIN needles;

[0023] Take the connector to be detected, and obtain the actual distance between the PIN pin in the connector to be detected and the reference line;

[0024] It is determined whether the PIN needle has a positional abnormality according to the difference between the actual distance and the second reference distance.

[0025] In a fourth aspect, the present application provides a method for detecting connector defects, comprising:

[0026] Take a qualified connector and take three first characteristic points on the housing of the qualified connector;

[0027] Based on the three first characteristic points, a first reference plane perpendicular to the PIN of the qualified connector is formed by fitting;

[0028] Obtaining a first distance from a tip of each PIN in the qualified connector to the first reference plane, and obtaining an average value of the first distances;

[0029] Using the average value as a first reference distance;

[0030] Take a plug connector to be detected, and take three second characteristic points on the housing of the plug connector to be detected;

[0031] Based on the three second characteristic points, a second reference plane perpendicular to the PIN pin of the connector to be detected is formed by fitting;

[0032] Acquire an angle between the second reference plane and the first reference plane, and when the angle is greater than or equal to a first preset angle and less than or equal to a second preset angle, use the second reference plane as a reference plane;

[0033] A second distance from the tip of each PIN pin in the connector to be detected to the reference surface is obtained, and whether there is an abnormal height of the PIN pin is determined according to the difference between the second distance and the first reference distance.

[0034] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0036] Figure 1 Schematic diagram of the exploded structure of batteries according to some embodiments of the present application.

[0037] Figure 2 This is a schematic diagram of the structure of the detection system of some embodiments of the present application.

[0038] Figure 3This is a schematic diagram of the structure of a connector defect detection device according to some embodiments of the present application.

[0039] Figure 4 It is a partially enlarged schematic diagram of a connector defect detection device in some embodiments of the present application.

[0040] Figure 5 A schematic flow chart of a connector defect detection method according to some embodiments of the present application.

[0041] Figure 6 Schematic diagram of the flow of connector defect detection methods according to other embodiments of the present application.

[0042] The reference numerals in the specific implementation manner are as follows:

[0043] 100. Battery;

[0044] 110, box body; 111, first part; 112, second part;

[0045] 120. Battery cell;

[0046] 200. Connector defect detection device;

[0047] 210, fixed bracket;

[0048] 220, rotating drive member;

[0049] 230. A first imaging device;

[0050] 231, optical transmitting module; 232, receiving lens;

[0051] 240. A second imaging device;

[0052] 250, mounting frame; 251, arc-shaped through hole; 252, first mounting plate; 253, second mounting plate;

[0053] 260, linear motion drive member; 261, motor; 262, motion platform;

[0054] 300. Testing platform;

[0055] 400. Connectors. DETAILED DESCRIPTION

[0056] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0057] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0059] In the description of the embodiments of the present application, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] In the description of the embodiments of the present application, the terms "first" and "second" are used only for descriptive purposes to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the embodiments of the present application, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0061] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0062] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0063] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0064] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. An element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and are not intended to be the only implementation method.

[0065] A connector is a connecting device used to connect two active devices to transmit current or signals. The defect detection of the connector is mainly to detect whether the PIN pin in the connector is abnormal. When using the existing detection device for detection, some PIN pins are often missed. A detection method in the related art mainly uses a depth camera to obtain relevant data of the PIN pin in the connector, and then undergoes certain logical operations to determine whether the PIN pin is abnormal. The depth camera generally includes a light emitting module and a receiving lens. When the depth camera is working, the light emitting module projects a light beam to the target object, and the light beam is reflected by the target object and enters the receiving lens. Usually, the light emitting module needs to have a certain angle when projecting the light beam, so that a reflection angle can be formed. Since the PIN of the connector is usually set in a receiving groove on the shell, this causes the PIN pin near the edge of the receiving groove to be easily in the visual blind spot of the depth camera. The light beam projected by the light emitting module is blocked by the side wall of the receiving groove and cannot reach the PIN pin in the visual blind spot. At this time, the PIN pin in the visual blind spot will be missed.

[0066] In order to solve the problem that PIN needles near the edge of the accommodating slot are easily missed, the embodiment of the present application proposes a connector defect detection device. By setting a rotating drive member and connecting a depth camera to the rotating drive member, the depth camera can rotate within a range of 360°. When there is a visual blind spot, the depth camera can be rotated to rotate the light transmitting module to the other side of the receiving lens, thereby eliminating the visual blind spot and achieving comprehensive coverage detection of the PIN needles.

[0067] The connector defect detection device proposed in the present application can be used, but is not limited to, for defect detection of connectors used in the battery production process.

[0068] Please refer to Figure 1 , Figure 1 A schematic diagram of the exploded structure of a battery 100 provided for some embodiments of the present application. The battery 100 includes a box body 110 and a battery cell 120, and the battery cell 120 is contained in the box body 110. Among them, the box body 110 is used to provide a storage space for the battery cell 120, and the box body 110 can adopt a variety of structures. In some embodiments, the box body 110 may include a first part 111 and a second part 112, and the first part 111 and the second part 112 cover each other, and the first part 111 and the second part 112 jointly define a storage space for accommodating the battery cell 120. The second part 112 may be a hollow structure with one end open, and the first part 111 may be a plate-like structure, and the first part 111 covers the open side of the second part 112, so that the first part 111 and the second part 112 jointly define a storage space; the first part 111 and the second part 112 may also be hollow structures with one side open, and the open side of the first part 111 covers the open side of the second part 112. Of course, the box body 110 formed by the first part 111 and the second part 112 can be in various shapes, such as a cylinder, a cuboid, etc.

[0069] In the battery 100, there may be multiple battery cells 120, and the multiple battery cells 120 may be connected in series, in parallel, or in a mixed connection. A mixed connection means that the multiple battery cells 120 are both connected in series and in parallel. The multiple battery cells 120 may be directly connected in series, in parallel, or in a mixed connection, and then the whole formed by the multiple battery cells 120 is accommodated in the box 110; of course, the battery 100 may also be a battery module formed by connecting multiple battery cells 120 in series, in parallel, or in a mixed connection, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole, and accommodated in the box 110. The battery 100 may also include other structures, for example, the battery 100 may also include a busbar component for realizing electrical connection between the multiple battery cells 120.

[0070] Each battery cell 120 may be a secondary battery or a primary battery, or a lithium-ion battery, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 120 may be cylindrical, flat, rectangular, or in other shapes.

[0071] According to some embodiments of this application, please refer to Figure 2 , Figure 3 , Figure 2 A schematic diagram of the structure of a detection system in some embodiments of the present application; Figure 3 The present invention is a schematic diagram of the structure of a connector defect detection device of some embodiments of the present invention. The present invention provides a connector defect detection device 200, which includes a fixed bracket 210, a rotating drive member 220, and a first imaging device 230. The rotating drive member 220 is disposed on the fixed bracket 210, and the first imaging device 230 is installed on the rotating drive member 220. The rotating drive member 220 is used to drive the first imaging device 230 to rotate relative to the fixed bracket 210, and the first imaging device 230 is a depth camera.

[0072] The fixed bracket 210 is a frame that mainly plays a supporting role. After the functional components in the connector defect detection device 200 are installed on the fixed bracket 210, the functional components can be kept in a relatively fixed position. For example, the rotating drive member 220 is installed on the fixed bracket 210, so that the rotating drive member 220 remains fixed relative to the fixed bracket 210. The fixed bracket 210 needs to have good structural strength and structural rigidity so that the fixed bracket 210 is not easily damaged or deformed. This is conducive to ensuring the functional stability of each functional component, especially to maintaining the working stability of the first imaging device 230. The fixed bracket 210 can be made of metal parts, which are not only stable but also strong and durable, or rigid plastic parts can be used, which are lighter and less expensive.

[0073] The rotating drive member 220 is a driving device capable of outputting a rotating motion. For example, the rotating drive member 220 may be a motor, specifically, a stepping motor or a servo motor. Since the servo motor adopts closed-loop control, the control performance is more reliable. Therefore, the servo motor may be preferably selected. This is conducive to improving the detection accuracy of the first imaging device.

[0074] A depth camera is also called a 3D camera, and the depth of field distance of the shooting space can be detected by the depth camera. Taking the line scanning depth camera commonly used in industrial inspection as an example, when measuring, the light beam projected by the light emitting module 231 of the depth camera needs to have a certain angle and distance with the receiving lens 232, so that the line stripes emitted by objects at different heights will have different y values, and a complete depth map or ordered point cloud can be obtained by scanning in the x direction.

[0075] The present application provides a connector defect detection device 200, which includes a fixed bracket 210, a rotating drive member 220, and a first imaging device 230. The rotating drive member 220 is disposed on the fixed bracket 210, and the first imaging device 230 is installed on the rotating drive member 220. The rotating drive member 220 is used to drive the first imaging device 230 to rotate relative to the fixed bracket 210, and the first imaging device 230 is a depth camera.

[0076] The connector defect detection device 200 in the embodiment of the present application is provided with a rotating drive member 220, and the depth camera is installed on the rotating drive member 220, so that the rotating drive member 220 can drive the depth camera to rotate. When performing defect detection on the connector 400, if a visual blind spot is encountered so that some PIN pins cannot be detected, the rotation of the depth camera can be controlled by the rotating drive member 220, so that the light emitting module 231 of the depth camera moves to the other side of the receiving lens 232. In this way, the visual blind spot can be eliminated, and the full coverage detection of the PIN pin can be achieved to solve the problem of missed detection of the PIN pin.

[0077] According to some embodiments of the present application, optionally, the connector defect detection device 200 further includes a second imaging device 240 , which is fixedly mounted on the fixed bracket 210 , and the second imaging device 240 is a 2D camera.

[0078] The 2D camera is a photographing device used to obtain planar image information, and can obtain a planar image of the connector 400 .

[0079] By combining a 2D camera and a depth camera, more inspection items can be performed on the connector 400 to make the inspection more comprehensive. For example, based on the data obtained by the depth camera, it is possible to detect whether the height of the PIN pin is abnormal. Through the image obtained by the 2D camera, it is possible to detect whether the position of the PIN pin is abnormal, whether the outline of the connector 400 is complete, whether the color of the housing of the connector 400 is deviated, etc.

[0080] According to some embodiments of the present application, optionally, the rotary drive member 220 has a rotary motion part, the rotary motion part is connected to the mounting frame 250, the first imaging device 230 is rotatably connected to the mounting frame 250, and a locking member is further provided between the first imaging device 230 and the mounting frame 250, the locking member is used to lock the first imaging device 230 and the mounting frame 250, so that the first imaging device 230 maintains a fixed installation angle relative to the mounting frame 250. The rotation axis of the first imaging device 230 relative to the mounting frame 250 is not parallel to the rotation axis of the rotary motion part.

[0081] The rotational motion part is a structure capable of performing rotational motion on the rotation driving member 220. For example, the rotational motion part may be a rotating shaft of a motor.

[0082] The mounting frame 250 is a frame body for mounting the first imaging device 230 , that is, the mounting frame 250 provides a mounting base for the first imaging device 230 .

[0083] The locking member is a structure capable of applying a locking force to the first imaging device 230 so that the first imaging device 230 and the mounting frame 250 remain relatively fixed. The locking member can apply a locking force or release the locking force. When the locking force is released, the first imaging device 230 can move relative to the mounting frame 250.

[0084] The first imaging device 230 is rotatably connected to the mounting frame 250. On this basis, a locking member is further provided between the first imaging device 230 and the mounting frame 250. This arrangement allows the installation angle of the first imaging device 230 relative to the mounting frame 250 to be adjusted. Specifically, during adjustment, the locking force of the locking member can be released, and then the first imaging device 230 can be rotated relative to the mounting frame 250 to change the installation angle. After the adjustment is completed, the locking member can be locked again to keep the first imaging device 230 at the new installation angle.

[0085] On the basis that the rotating driving member 220 can drive the first imaging device 230 to rotate relative to the fixed bracket 210, the installation angle of the first imaging device 230 relative to the mounting bracket 250 can be further adjusted, so that the depth camera can have a more flexible shooting angle. In this way, it is beneficial to further expand the detection range of the depth camera, and when detecting various types and specifications of connectors 400, the visual blind spot can be eliminated, and the comprehensive coverage detection of PIN pins can be achieved.

[0086] According to some embodiments of the present application, optionally, please refer to Figure 3 , Figure 4 , Figure 4 The schematic diagram of the partial enlargement of the connector defect detection device of some embodiments of the present application is as follows: The mounting frame 250 is provided with an arc-shaped through hole 251, the locking member is a bolt, and the first imaging device 230 is provided with a threaded hole, and the bolt is passed through the arc-shaped through hole 251 and connected with the threaded hole.

[0087] The arc-shaped through hole 251 is an arc-shaped hole structure that penetrates both sides of the mounting frame 250. The center of the arc needs to coincide with the rotation center of the first imaging device 230, so that the threaded hole can always be aligned with the arc-shaped through hole 251 during the rotation of the first imaging device 230.

[0088] The bolt is passed through the arc-shaped through hole 251 and connected with the threaded hole. When the bolt is tightened, the bolt can lock the first imaging device 230 and the mounting frame 250. When the bolt is loosened, the first imaging device 230 can rotate relative to the mounting frame 250. Therefore, the arc-shaped through hole 251, the bolt and the threaded hole constitute the installation angle adjustment structure of the first imaging device 230, which is not only simple in structure, but also convenient in adjustment process.

[0089] According to some embodiments of the present application, optionally, the rotation axis of the first imaging device 230 relative to the mounting bracket 250 is perpendicular to the rotation axis of the rotary motion part. In this case, the first imaging device 230 can have a larger angle adjustment range relative to the fixed bracket 210.

[0090] According to some embodiments of the present application, optionally, please refer to Figure 3 , Figure 4 The mounting frame 250 includes a first mounting plate 252 and a second mounting plate 253 that are perpendicular to each other. The first mounting plate 252 is connected to the rotating motion part and the first mounting plate 252 is perpendicular to the rotation axis of the rotating motion part. The first imaging device 230 is hinged to the second mounting plate 253.

[0091] The first mounting plate 252 and the second mounting plate 253 are both plate structures. The first mounting plate 252 and the second mounting plate 253 may be an integrally formed structure, or may be separately processed and formed and then assembled together.

[0092] The mounting frame 250 includes a first mounting plate 252 and a second mounting plate 253, and the first mounting plate 252 and the second mounting plate 253 are perpendicular to each other. On this basis, the first mounting plate 252 is vertically connected to the rotating motion part, and the first imaging device 230 is hinged to the second mounting plate 253, so that the rotation axis of the first imaging device 230 relative to the mounting frame 250 can be perpendicular to the rotation axis of the rotating motion part.

[0093] According to some embodiments of the present application, optionally, please refer to Figure 1 , Figure 2 The connector defect detection device 200 further includes a linear motion driving member 260, the linear motion driving member 260 has a linear motion portion, and the fixed bracket 210 is installed on the linear motion portion.

[0094] The linear motion driver 260 is a driving device capable of outputting linear motion, and the linear motion portion is a structure in the linear motion driver 260 that can directly perform linear motion. For example, the linear motion driver 260 can be a linear slide. The linear slide can specifically include a motor 261, a moving table 262, and a ball screw kinematic pair (not shown in the figure). The motor 261 is connected to the moving table 262 through the ball screw kinematic pair. When the motor 261 is running, the ball screw kinematic pair converts the rotational motion of the motor 261 into the linear motion of the moving table 262. In the case where the linear motion driver 260 is a linear slide, the moving table 262 is the linear motion portion.

[0095] By providing a linear motion driving member 260 , the linear motion driving member 260 can drive the fixed bracket 210 to move along a straight line, so that it is convenient to adjust the position of the depth camera to adapt to the detection of connectors 400 of different types and specifications.

[0096] According to some embodiments of this application, please refer to Figures 1 to 4 The present application provides a connector defect detection device 200, which includes a fixed bracket 210, a rotating drive member 220, a first imaging device 230, a second imaging device 240, and a linear motion drive member 260. The rotating drive member 220 is disposed on the fixed bracket 210, the first imaging device 230 is mounted on the rotating drive member 220, the rotating drive member 220 is used to drive the first imaging device 230 to rotate relative to the fixed bracket 210, and the first imaging device 230 is a depth camera. The second imaging device 240 is fixedly mounted on the fixed bracket 210, and the second imaging device 240 is a 2D camera. The linear motion drive member 260 has a linear motion portion, and the fixed bracket 210 is mounted on the linear motion portion.

[0097] By setting a rotating drive member 220 and installing a depth camera on the rotating drive member 220, the rotating drive member 220 can drive the depth camera to rotate. When performing defect detection on the connector 400, if a visual blind spot is encountered so that some PIN pins cannot be detected, the rotation of the depth camera can be controlled by the rotating drive member 220, so that the light emitting module 231 of the depth camera moves to the other side of the receiving lens 232. In this way, the visual blind spot can be eliminated, and the full coverage detection of the PIN pin can be achieved to solve the problem of missed detection of the PIN pin. In addition, by combining a 2D camera and a depth camera, more detection items can be performed on the connector 400 to make the detection more comprehensive. Furthermore, by setting a linear motion drive member 260, the linear motion drive member 260 can drive the fixed bracket 210 to move along a straight line, so that it is convenient to adjust the position of the depth camera to adapt to the detection of connectors 400 of different types and specifications.

[0098] According to some embodiments of the present application, the present application also provides a detection system, which includes a detection platform 300 and a connector defect detection device 200. The detection platform 300 can fix the connector 400 to be detected, and the connector defect detection device 200 is the connector defect detection device 200 in any of the above embodiments.

[0099] According to some embodiments of the present application, the present application also provides a method for detecting connector defects, please refer to Figure 5 , Figure 5 The following is a flow chart of a method for detecting connector defects in some embodiments of the present application. The method includes:

[0100] Step S101: Take a qualified connector and take three first characteristic points on the shell of the qualified connector.

[0101] A qualified connector is a connector that has no abnormal PIN height after testing. A qualified connector is a qualified product after testing by other testing means (such as manual visual inspection). The first characteristic point can be a point at a specific position on the housing. For example, three of the four corners of the housing can be determined as the first characteristic points on the end face of the housing.

[0102] Step S102: forming a first reference plane perpendicular to the PIN of the qualified connector based on fitting of the three first feature points.

[0103] The first reference plane is a virtual plane, and the virtual plane is perpendicular to the PIN pins of the qualified connector.

[0104] Step S103: obtaining a first distance from a tip of each PIN in a qualified connector to a first reference plane, and obtaining an average value of the first distances.

[0105] The qualified connector has a plurality of PIN pins, and each PIN pin has no problem of abnormal height. It is necessary to obtain a first distance from the tip of each PIN pin to the first reference plane, and then take an average of the obtained plurality of first distances.

[0106] Step S104: taking the first reference plane as a reference plane and taking the average value as a first reference distance.

[0107] Step S105: Take the connector to be detected, obtain the second distance from the tip of each PIN pin in the connector to be detected to the reference surface, and determine whether there is an abnormal height of the PIN pin according to the difference between the second distance and the first reference distance.

[0108] It can be understood that the connector to be tested and the qualified connector are connectors of the same type and specification.

[0109] After obtaining the second distance from the tip of each PIN pin in the connector to be detected to the reference surface, each second distance can be compared with the first reference distance. If the difference between the second distance of a certain PIN pin and the first reference distance is greater than a preset value, it can be determined that the PIN pin has a height abnormality. If the difference between all the second distances and the first reference distance does not exceed the preset value, it can be determined that the connector to be detected does not have a height abnormality.

[0110] According to some embodiments of the present application, the connector defect detection method further includes:

[0111] Take a qualified connector and draw a reference line in a plane perpendicular to the PIN pins of the qualified connector, the reference line being parallel to the row direction in which the PIN pins are arranged;

[0112] Obtaining the average distance from each row of PIN needles to the baseline as the second reference distance of each row of PIN needles;

[0113] Take the connector to be tested and obtain the actual distance from the PIN pin in the connector to be tested to the reference line;

[0114] It is determined whether the PIN needle has a positional abnormality according to the difference between the actual distance and the second reference distance.

[0115] Specifically, if the difference between the actual distance of a PIN and the second reference distance is greater than the preset value, it can be determined that the PIN pin has a positional abnormality; if the difference between the actual distance of all PIN pins and the second reference distance does not exceed the preset value, it can be determined that the connector to be detected has no positional abnormality.

[0116] According to some embodiments of the present application, the present application also provides a method for detecting connector defects, please refer to Figure 6 , Figure 6 The following is a flow chart of a method for detecting connector defects according to some other embodiments of the present application. The method comprises:

[0117] Step S201: Take a qualified connector and take three first characteristic points on the housing of the qualified connector;

[0118] Step S202: forming a first reference plane perpendicular to the PIN of the qualified connector by fitting based on the three first characteristic points;

[0119] Step S203: obtaining a first distance from the tip of each PIN in the qualified connector to the first reference plane, and obtaining an average value of the first distances;

[0120] Step S204: taking the average value as the first reference distance;

[0121] Step S205: Take the connector to be tested and take three second characteristic points on the housing of the connector to be tested;

[0122] Step S206: forming a second reference plane perpendicular to the PIN of the connector to be detected by fitting based on the three second characteristic points;

[0123] Step S207: obtaining an angle between the second reference plane and the first reference plane, and when the angle is greater than or equal to the first preset angle and less than or equal to the second preset angle, taking the second reference plane as a reference plane;

[0124] Step S208: obtaining a second distance from the tip of each PIN pin in the connector to be detected to the reference surface, and determining whether there is an abnormal height of the PIN pin according to the difference between the second distance and the first reference distance.

[0125] In the actual testing process, sometimes there are some situations where the overall test connector tilts to a certain extent. This tilt is not due to structural defects in the test connector itself, but because the fixed posture is not adjusted properly during the process of fixing on the testing platform. When the overall test connector tilts, the related technical testing methods often judge that there is an abnormality and judge the connector as defective, but it may actually be a qualified product.

[0126] In order to avoid such misjudgment, the connector defect detection method in the embodiment of the present application can also identify the situation where the connector to be detected is tilted as a whole. The method of the present application takes a first feature point on a qualified connector, and forms a first reference plane based on the first feature point. In subsequent detection, the method also takes a second feature point on the connector to be detected, and forms a second reference plane based on the second feature point, and judges whether an overall tilt occurs based on the size of the angle between the second reference plane and the first reference plane. When the angle is greater than or equal to the first preset angle and less than or equal to the second preset angle, it can be judged that the connector to be detected is tilted as a whole, and the degree of tilt does not exceed an acceptable range.

[0127] Based on the fact that the connector to be tested has an overall tilt within an acceptable range, this method uses the second reference plane as a reference plane, and then obtains a second distance from the tip of each PIN needle in the connector to be tested to the reference plane. Thereafter, it is determined whether there is a PIN needle height abnormality based on the difference between the second distance and the first reference distance.

[0128] The detection method in the embodiment of the present application can avoid misjudgment caused by the overall tilt of the connector to be detected, thereby improving the accuracy of detection.

[0129] It is understandable that the second characteristic point on the connector housing to be tested and the first characteristic point on the qualified connector housing must be points at corresponding positions. For example, if the first characteristic point is a point corresponding to three corners on the end face of the qualified connector housing, then the second characteristic point must be a point corresponding to three corners on the end face of the connector housing to be tested.

[0130] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0131] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A connector defect detection device, characterized in that: include: Fixed bracket; A rotating driving member, disposed on the fixed bracket; as well as The first imaging device is mounted on the rotating driving member, and the rotating driving member is used to drive the first imaging device to rotate relative to the fixed bracket. The first imaging device is a depth camera.

2. The connector defect detection device according to claim 1, characterized in that: It also includes a second imaging device, which is fixedly mounted on the fixed bracket and is a 2D camera.

3. The connector defect detection device according to claim 1, characterized in that: The rotary drive member has a rotary motion part, the rotary motion part is connected to a mounting frame, the first imaging device is rotatably connected to the mounting frame, a locking member is further provided between the first imaging device and the mounting frame, the locking member is used to lock the first imaging device and the mounting frame, so that the first imaging device maintains a fixed mounting angle relative to the mounting frame; Wherein, a rotation axis of the first imaging device relative to the mounting bracket is not parallel to a rotation axis of the rotary motion portion.

4. The connector defect detection device according to claim 3, characterized in that: An arc-shaped through hole is arranged on the mounting frame, the locking member is a bolt, a threaded hole is arranged on the first imaging device, and the bolt passes through the arc-shaped through hole and is connected with the threaded hole.

5. The connector defect detection device according to claim 3, characterized in that: The rotation axis of the first imaging device relative to the mounting frame is perpendicular to the rotation axis of the rotational motion portion.

6. The connector defect detection device according to claim 5, characterized in that: The mounting frame includes a first mounting plate and a second mounting plate which are perpendicular to each other, the first mounting plate is connected to the rotary motion part and the first mounting plate is perpendicular to the rotation axis of the rotary motion part, and the first imaging device is hinged to the second mounting plate.

7. The connector defect detection device according to any one of claims 1 to 6, characterized in that: It also includes a linear motion driving component, which has a linear motion portion, and the fixing bracket is installed on the linear motion portion.

8. A detection system, characterized in that: include: A testing platform, wherein the testing platform can fix the connector to be tested; as well as A connector defect detection device as claimed in any one of claims 1 to 7.

9. A method for detecting connector defects, characterized in that: include: Take a qualified connector and take three first characteristic points on the housing of the qualified connector; Based on the three first characteristic points, a first reference plane perpendicular to the PIN of the qualified connector is formed by fitting; Obtaining a first distance from a tip of each PIN in the qualified connector to the first reference plane, and obtaining an average value of the first distances; Taking the first reference plane as a reference plane and taking the average value as a first reference distance; Take the connector to be detected, obtain the second distance from the tip of each PIN pin in the connector to be detected to the reference surface, and determine whether there is an abnormal height of the PIN pin according to the difference between the second distance and the first reference distance.

10. The connector defect detection method according to claim 9, characterized in that: The connector defect detection method further comprises: Take a qualified connector and take a reference line in a plane perpendicular to the PIN pins of the qualified connector, wherein the reference line is parallel to the row direction in which the PIN pins are arranged; Obtaining an average distance from each row of PIN needles to the reference line as a second reference distance for each row of PIN needles; Take the connector to be detected, and obtain the actual distance between the PIN pin in the connector to be detected and the reference line; It is determined whether the PIN needle has a positional abnormality according to the difference between the actual distance and the second reference distance.

11. A method for detecting connector defects, characterized in that: include: Take a qualified connector and take three first characteristic points on the housing of the qualified connector; Based on the three first characteristic points, a first reference plane perpendicular to the PIN of the qualified connector is formed by fitting; Obtaining a first distance from a tip of each PIN in the qualified connector to the first reference plane, and obtaining an average value of the first distances; Using the average value as a first reference distance; Take a plug connector to be detected, and take three second characteristic points on the housing of the plug connector to be detected; Based on the three second characteristic points, a second reference plane perpendicular to the PIN pin of the connector to be detected is formed by fitting; Acquire an angle between the second reference plane and the first reference plane, and when the angle is greater than or equal to a first preset angle and less than or equal to a second preset angle, use the second reference plane as a reference plane; A second distance from the tip of each PIN pin in the connector to be detected to the reference surface is obtained, and whether there is an abnormal height of the PIN pin is determined according to the difference between the second distance and the first reference distance.

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