Spring pin detection device

Abstract

The utility model belongs to spring needle detection device technical field, especially spring needle detection device, including workstation, multi -axis manipulator, material carrying mechanism and visual detection mechanism, material carrying mechanism includes the material receiving tray of swing joint on the workstation, visual mechanism includes the first CCD camera and second CCD camera of being located on the workstation, the first CCD camera horizontal arrangement is used for obtaining the side image of spring needle, the second CCD camera is arranged in an oblique way and is used for obtaining the bottom end surface image of spring needle. The application is judged by the unified detection standard of visual detection mechanism, reduces the situation that the appearance of spring needle that does not reach the standard flows into the market, replaces the technician who judges whether the appearance has the defect with the material operator who only needs to complete the spring needle feeding and discharging, reduces the work difficulty on one hand, is favorable to the input cost of personnel reduction, on the other hand, the single replacement material work is convenient for the material operator to control to the multiple detection equipment, is favorable to the improvement of spring needle detection efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of spring needle detection devices, and particularly relates to spring needle detection devices. Background Technology

[0002] A spring needle is a type of probe formed by riveting and pre-pressing three basic components: a needle shaft, a spring, and a needle tube using precision instruments. In existing technology, the side and bottom surfaces of the needle tube are inspected visually for defects (such as scratches or indentations). This inspection method has the following drawbacks: it is difficult to standardize inspection criteria, resulting in high labor costs and low inspection efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a spring needle detection device, which aims to solve the technical problems in the prior art.

[0004] To achieve the above objectives, the spring needle detection device provided in this embodiment includes a worktable, a multi-axis robot, a material loading mechanism, and a vision inspection mechanism. The bottom end of the multi-axis robot is connected to the worktable, and the top end is provided with a suction structure. The material loading mechanism includes a material tray movably connected to the worktable, which can hold a number of spring needles. The vision mechanism includes a first CCD camera and a second CCD camera mounted on the worktable. The first CCD camera is horizontally arranged and used to acquire side images of the spring needles, while the second CCD camera is tilted and used to acquire bottom end images of the spring needles. The suction structure can fix or release the top end of the spring needles. The multi-axis robot moves the spring needles located on the material tray to the imaging ends of the first CCD camera and the second CCD camera.

[0005] Optionally, the suction structure includes an assembly plate, several assembly cylinders, and suction cups corresponding to the assembly cylinders. The center of the assembly plate is connected to the end of the multi-axis manipulator and has several horizontally and / or vertically arranged waist-shaped holes. One end of the assembly cylinder is provided with an air connector, the other end is connected to the suction cup, and the cylinder body is detachably connected to the waist-shaped holes.

[0006] Optionally, a locking structure is also included, which includes a pair of tightening nuts and a thread on the side of the assembly cylinder. After the cylinder body passes through the waist-shaped hole, it is threadedly engaged with the pair of tightening nuts. When the pair of tightening nuts abut against the surface of the assembly plate, they can provide a fixed frictional force for the assembly cylinder.

[0007] Optionally, the suction cup has a coaxially arranged suction through hole and a contoured step at its suction end. The suction through hole communicates with the inner cavity of the assembly cylinder, and the contoured step is adapted to the needle tube end and the inner needle shaft end of the spring needle.

[0008] Optionally, it also includes a host and a display screen. The host is equipped with an image acquisition unit and an image processor. The first CCD camera and the second CCD camera are respectively electrically connected to the image acquisition unit. The image processor is electrically connected to the image acquisition unit and can receive the captured images and determine whether the side appearance and bottom appearance of the spring pin have defects. The display screen is set on the workbench, electrically connected to the host, and used to display the captured images.

[0009] Optionally, it also includes a third CCD camera and a driver. The third CCD camera is mounted on the multi-axis robot and is used to acquire images of the spring needles placed on the material tray. The third CCD camera is electrically connected to the image acquisition unit. The image processor can receive the placement images and obtain the position information of the spring needles in the spatial coordinate system. The driver is electrically connected to the image processor. The multi-axis robot is electrically connected to an external power supply through the driver. The driver can determine the material picking path of the multi-axis robot based on the position information of the spring needles in the spatial coordinate system.

[0010] Optionally, the material loading mechanism further includes an X-axis linear module, which is disposed on the worktable and has an X-axis slide on top that can slide back and forth along the X-axis direction, and the material receiving tray is disposed on top of the X-axis slide.

[0011] Optionally, the top of the receiving tray has a material cavity that matches the contour of the bottom end of the spring needle.

[0012] Optionally, it also includes an assembly beam, on which a first Y-axis linear module is provided. The first Y-axis linear module has a first Y-axis slide that can slide back and forth along the Y-axis direction. A first assembly bracket is provided on the first Y-axis slide, and the first CCD camera is mounted on the first assembly bracket.

[0013] Optionally, the assembly beam is further provided with a second Y-axis linear module, the second Y-axis linear module having a second Y-axis slide capable of sliding back and forth along the Y-axis direction, a second assembly bracket being provided on the second Y-axis slide, and the second CCD camera being mounted on the second assembly bracket.

[0014] The above-mentioned technical solutions of one or more of the spring needle detection devices provided in this utility model embodiment have at least one of the following technical effects: Several spring needles to be detected are placed on a support tray. First, a multi-axis robot drives a suction structure to move relative to the support tray. The suction structure picks up the spring needles fixed on the support tray. Then, the multi-axis robot moves several spring needles towards the end closer to the first CCD camera and makes its side face the shooting end of the first CCD camera to obtain a side image of the spring needle. Then, the multi-axis robot moves several spring needles towards the end closer to the second CCD camera and makes its bottom face face the shooting end of the second CCD camera to obtain a bottom face image of the spring needle. The visual inspection mechanism compares the side image and the bottom face image with the built-in inspection standard to obtain the appearance inspection result of the spring needle. Finally, the multi-axis robot places the spring needles that have been photographed onto the support tray. Compared with existing technologies, this application reduces the number of substandard spring pins entering the market by standardizing inspection standards through visual inspection agencies. It replaces the technicians who determine whether the appearance is defective with material handlers who only need to load and unload the spring pins. On the one hand, it reduces the difficulty of the work and helps to reduce personnel input costs. On the other hand, the single material replacement work makes it easier for material handlers to manage multiple inspection devices, which helps to improve the inspection efficiency of spring pins. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the spring needle detection device provided in an embodiment of the present invention.

[0017] Figure 2 The front view of the hidden protective cover of the spring needle detection device provided in the embodiment of this utility model.

[0018] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle.

[0019] Figure 4 The rear view of the hidden protective cover of the spring needle detection device provided in the embodiment of this utility model.

[0020] The following are the labeling elements in the figure:

[0021] 1—Workbench 11—Display Screen

[0022] 12—Assembly beam; 121—First Y-axis linear module

[0023] 1211—First assembly bracket; 122—Second Y-axis linear module

[0024] 1221—Second assembly bracket; 13—Protective cover

[0025] 131—Loading / Unloading Window 2—Multi-axis Robot

[0026] 21—Absorption Structure 211—Assembly Plate

[0027] 212—Assembly cylinder 213—Suction cup

[0028] 2131—Adsorption through-hole; 2132—Contouring step

[0029] 214—Oval hole; 215—Air connector

[0030] 216—Tightening nut 22—Third CCD camera

[0031] 3—Material loading mechanism; 31—Material receiving tray

[0032] 311—Material cavity; 32—X-axis linear module

[0033] 4—Visual Inspection Agency 41—First CCD Camera

[0034] 42—Second CCD camera. Detailed Implementation

[0035] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0036] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] 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 one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0039] In one embodiment of this utility model, such as Figures 1-4As shown, a spring needle detection device is provided, including a worktable 1, a multi-axis robot 2, a material loading mechanism 3, and a vision inspection mechanism 4. The bottom end of the multi-axis robot 2 is connected to the worktable 1, and the top end is provided with a suction structure 21. The material loading mechanism 3 includes a material tray 31 movably connected to the worktable 1, which can hold a number of spring needles. The vision mechanism includes a first CCD camera 41 and a second CCD camera 42 mounted on the worktable 1. The first CCD camera 41 is horizontally arranged and used to acquire side images of the spring needles, while the second CCD camera 42 is tilted and used to acquire bottom end images of the spring needles. The suction structure 21 can fix or release the top end of the spring needles. The multi-axis robot 2 moves the spring needles located on the material tray 31 to the imaging end of the first CCD camera 41 and the imaging end of the second CCD camera 42. Several spring needles to be inspected are placed on the receiving tray 31. First, the multi-axis robot 2 drives the suction structure 21 to move relative to the receiving tray 31. The suction structure 21 picks up the spring needles fixed on the receiving tray 31. Then, the multi-axis robot 2 moves several spring needles towards the end closer to the first CCD camera 41 and makes its side face the shooting end of the first CCD camera 41 to obtain a side image of the spring needle. Then, the multi-axis robot 2 moves several spring needles towards the end closer to the second CCD camera 42 and makes its bottom face face the shooting end of the second CCD camera 42 to obtain a bottom face image of the spring needle. The visual inspection mechanism 4 compares the side image and the bottom face image with the built-in inspection standard to obtain the appearance inspection result of the spring needle. Finally, the multi-axis robot 2 places the spring needles that have been photographed onto the receiving tray 31. Compared with existing technologies, this application uses a visual inspection agency 4 to standardize inspection standards, reducing the number of substandard spring pins entering the market. It replaces the technicians who determine whether the appearance is defective with material handlers who only need to load and unload the spring pins. On the one hand, it reduces the difficulty of the work and helps to reduce personnel input costs. On the other hand, the single material replacement work makes it easier for material handlers to manage multiple inspection devices, which helps to improve the inspection efficiency of spring pins.

[0040] In one embodiment of this utility model, such as Figure 3 As shown, the suction structure 21 includes an assembly plate 211, several assembly cylinders 212, and suction cups 213 corresponding to each assembly cylinder 212. The center of the assembly plate 211 is connected to the end of the multi-axis robot 2, and it has several horizontally and / or vertically arranged waist-shaped holes 214. One end of each assembly cylinder 212 is provided with an air connector 215, the other end is connected to the suction cup 213, and the cylinder body is detachably connected to the waist-shaped holes 214. Specifically, by using a detachable connection structure, the several assembly cylinders 212 are staggered in the horizontal direction, presenting multiple spring needles in a single image capture, which helps to improve detection efficiency.

[0041] In one embodiment of this utility model, such as Figure 3 As shown, it also includes a locking structure, which includes a pair of tightening nuts 216 and threads formed on the side of the assembly cylinder 212. The cylinder body of the assembly cylinder 212 passes through the waist-shaped hole 214 and engages with the pair of tightening nuts 216. When the pair of tightening nuts 216 abut against the surface of the assembly plate 211, they provide a fixed frictional force to the assembly cylinder 212. Specifically, the position of the assembly cylinder 212 on the assembly plate 211 is adjusted by tightening the tightening nuts 216. The structure is simple and easy to operate.

[0042] In one embodiment of this utility model, such as Figure 3 As shown, the suction cup 213 has a coaxially arranged suction through hole 2131 and a contoured step 2132 at its suction end. The suction through hole 2131 communicates with the inner cavity of the assembly cylinder 212, and the contoured step 2132 is adapted to the needle tube end and the inner needle shaft end of the spring needle. Specifically, when picking up material, the needle tip of the needle shaft extends into the suction through hole 2131, the needle tube abuts against the contoured step 2132, and a suction gap is left between the needle tip of the needle shaft and the inner wall of the suction through hole 2131.

[0043] In one embodiment of this utility model, such as Figure 1 As shown, the system also includes a host computer and a display screen 11. The host computer is equipped with an image acquisition unit and an image processor. The first CCD camera 41 and the second CCD camera 42 are electrically connected to the image acquisition unit. The image processor is also electrically connected to the image acquisition unit and can receive captured images to determine whether the side and bottom surfaces of the spring pin have defects. The display screen 11 is mounted on the workbench 1 and electrically connected to the host computer for displaying captured images. Specifically, the image processor contains detection software with preset standard dimensions for scratch length and depth, which are used to compare with the captured side and bottom surface images, and the comparison results are displayed on the display screen 11.

[0044] In one embodiment of this utility model, such as Figure 2As shown, the system also includes a third CCD camera 22 and a driver. The third CCD camera 22 is mounted on the multi-axis robot 2 and is used to acquire images of the spring needles placed on the material tray 31. The third CCD camera 22 is electrically connected to the image acquisition unit. The image processor receives the placement images and determines the position information of the spring needles in the spatial coordinate system. The driver is electrically connected to the image processor. The multi-axis robot 2 is electrically connected to an external power supply through the driver. The driver can determine the material handling path of the multi-axis robot 2 based on the position information of the spring needles in the spatial coordinate system. Specifically, the third CCD camera 22 acquires the position signal of the spring needles on the material tray. The image processor converts the image pixel coordinate system into a spatial coordinate system to obtain the coordinates of the spring needles. The driver determines the movement path of the multi-axis robot 2 based on the coordinates. Before operation, the suction cups 213 on the multi-axis robot 2 need to be aligned with the material cavities 311 on the material tray 31.

[0045] In one embodiment of this utility model, such as Figure 2 As shown, the material loading mechanism 3 also includes an X-axis linear module 32, which is mounted on the worktable 1 and has an X-axis slide table on top that can slide back and forth along the X-axis direction. The material receiving tray 31 is located on top of the X-axis slide table. Specifically, it also includes a protective cover 13, which is mounted on the worktable 1 and has a loading / unloading window 131 near the operation of the device. The material handler needs to complete the spring needle loading and unloading work in the loading / unloading window 131 and use the X-axis linear module 32 to drive the material receiving tray 31 to move towards or away from the loading / unloading window 131.

[0046] In one embodiment of this utility model, such as Figure 2 As shown, the top of the material receiving tray 31 has a material cavity 311 that matches the contour of the bottom end of the spring needle.

[0047] In one embodiment of this utility model, such as Figure 2 As shown, the system also includes an assembly beam 12, on which a first Y-axis linear module 121 is mounted. The first Y-axis linear module 121 has a first Y-axis slide capable of sliding back and forth along the Y-axis direction. A first assembly bracket 1211 is mounted on the first Y-axis slide, and the first CCD camera 41 is mounted on the first assembly bracket 1211. Specifically, the assembly beam 12 is located inside the protective cover 13. The first Y-axis linear module 121 drives the first CCD camera 41 to move relative to several suction cups 213, thereby reducing blind spots during shooting.

[0048] In one embodiment of this utility model, such as Figure 4As shown, the assembly beam 12 is also equipped with a second Y-axis linear module 122. The second Y-axis linear module 122 has a second Y-axis slide capable of sliding back and forth along the Y-axis direction. A second assembly bracket 1221 is provided on the second Y-axis slide, and the second CCD camera 42 is mounted on the second assembly bracket 1221. The second Y-axis linear module drives the second CCD camera to move relative to several suction cups 213, thereby reducing blind spots in the shooting.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pogo pin detection device, characterized by: The device includes a worktable, a multi-axis robot, a material loading mechanism, and a vision inspection mechanism. The bottom end of the multi-axis robot is connected to the worktable, and the top end is equipped with a suction structure. The material loading mechanism includes a material tray movably connected to the worktable, which can hold a number of spring needles. The vision inspection mechanism includes a first CCD camera and a second CCD camera mounted on the worktable. The first CCD camera is horizontally arranged and used to acquire side images of the spring needles, while the second CCD camera is tilted and used to acquire bottom surface images of the spring needles. The suction structure can fix or release the top end of the spring needles. The multi-axis robot moves the spring needles located on the material tray to the imaging ends of the first CCD camera and the second CCD camera.

2. The pogo pin detection device of claim 1, wherein: The suction structure includes an assembly plate, several assembly cylinders, and suction cups corresponding to each assembly cylinder. The center of the assembly plate is connected to the end of the multi-axis manipulator and has several horizontally and / or vertically arranged waist-shaped holes. One end of each assembly cylinder is provided with an air connector, the other end is connected to the suction cup, and the cylinder body is detachably connected to the waist-shaped holes.

3. The pogo pin detection apparatus of claim 2, wherein: It also includes a locking structure, which includes a pair of loosening nuts and a thread on the side of the assembly cylinder. After the cylinder body passes through the waist-shaped hole, it is threadedly engaged with the pair of loosening nuts. When the pair of loosening nuts abut against the surface of the assembly plate, they can provide a fixed frictional force for the assembly cylinder.

4. The pogo pin detection apparatus of claim 3, wherein: The suction cup has a coaxially arranged suction through hole and a contoured step at its suction end. The suction through hole communicates with the inner cavity of the assembly cylinder, and the contoured step is adapted to the needle tube end and the inner needle shaft end of the spring needle.

5. The pogo pin detection apparatus of claim 1, wherein: It also includes a host and a display screen. The host is equipped with an image acquisition unit and an image processor. The first CCD camera and the second CCD camera are respectively electrically connected to the image acquisition unit. The image processor is electrically connected to the image acquisition unit and can receive the captured images and determine whether the side and bottom surfaces of the spring pin have defects. The display screen is set on the workbench and electrically connected to the host and is used to display the captured images.

6. The pogo pin detection apparatus of claim 5, wherein: It also includes a third CCD camera and a driver. The third CCD camera is mounted on the multi-axis robot and is used to acquire images of the spring needles placed on the material tray. The third CCD camera is electrically connected to the image acquisition unit. The image processor can receive the placement images and obtain the position information of the spring needles in the spatial coordinate system. The driver is electrically connected to the image processor. The multi-axis robot is electrically connected to an external power supply through the driver. The driver can determine the material picking path of the multi-axis robot based on the position information of the spring needles in the spatial coordinate system.

7. The pogo pin detection apparatus of claim 1, wherein: The material loading mechanism also includes an X-axis linear module, which is located on the worktable and has an X-axis slide on top that can slide back and forth along the X-axis direction. The material receiving tray is located on top of the X-axis slide.

8. The pogo pin detection apparatus of claim 1, wherein: The top of the material receiving tray has a material cavity that matches the contour of the bottom end of the spring needle.

9. The spring needle detection device according to claim 1, characterized in that: It also includes an assembly beam, on which a first Y-axis linear module is provided. The first Y-axis linear module has a first Y-axis slide that can slide back and forth along the Y-axis direction. A first assembly bracket is provided on the first Y-axis slide, and the first CCD camera is mounted on the first assembly bracket.

10. The pogo pin detection apparatus of claim 9, wherein: The assembly beam is also provided with a second Y-axis linear module. The second Y-axis linear module has a second Y-axis slide that can slide back and forth along the Y-axis direction. A second assembly bracket is provided on the second Y-axis slide, and the second CCD camera is mounted on the second assembly bracket.

Images