Supporting rod size measuring equipment based on machine vision

Abstract

The invention relates to the technical field of measuring equipment, and provides supporting rod size measuring equipment based on machine vision, which comprises a workbench and a visual camera, a feeding mechanism is arranged in the workbench, baffles are fixed to the two ends of the top of the workbench, a cleaning mechanism is arranged on one side between the baffles, and an air cylinder is installed on one side of the workbench. Through the arrangement of the cleaning mechanism, when the feeding plate ascends for conveying, one side of the extrusion lifting plate is overturned upwards, the other side of the extrusion lifting plate is overturned downwards, a brush plate is driven to press downwards, a to-be-detected product passes through the bottom of the brush plate in a friction mode, impurities attached to the surface of the product are brushed off, meanwhile, a piston reciprocates in a cavity through a movable plate, and air is entrained; the air is discharged from the nozzle, and the impurities brushed off are blown to the outside of the to-be-detected product and are prevented from being attached to the to-be-detected product, so that the measurement precision of the size measurement equipment for the to-be-detected product is improved, and the influence of impurity attachment on image acquisition of a machine vision system is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of measuring equipment, and in particular to a support rod size measuring equipment based on machine vision. Background Art

[0002] The support rod size measuring device based on machine vision is a device that uses image processing technology and machine vision algorithms to automatically measure the size of automobile support rods / gas spring support rods. This device combines non-contact measurement technology and the high-precision characteristics of machine vision, and can achieve fast and accurate measurement of the size of automobile support rods. It uses a high-resolution industrial camera or camera to collect images of automobile support rods, and uses image processing algorithms such as edge detection and contour extraction to extract the edge contour or feature points of automobile support rods. The size parameters of automobile support rods, such as length and diameter, are obtained by calculation, and the measurement results are output in digital or graphical form for user reference or further processing;

[0003] The conventional existing technical solutions have the following defects:

[0004] 1. Before testing the support rod, impurities may adhere to the surface of the rod during transportation or storage. During testing, impurities such as dust and particles may interfere with the image acquisition and processing process of the machine vision system. Impurities may mask the true surface features of the support rod, making it impossible for the measurement system to accurately identify the size and shape of the support rod.

[0005] 2. The support rod is cylindrical in shape. Usually, the detection device uses a conveyor belt to transport samples. However, due to the characteristics of its shape, it may roll during transportation, causing inaccurate image acquisition position of the machine vision system and affecting the acquisition quality. Summary of the invention

[0006] The purpose of the present invention is to provide a support rod size measuring device based on machine vision, so as to solve the defects of the existing support rod size measuring device based on machine vision, such as inconvenience in cleaning the support rods and unstable conveying.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a support rod size measuring device based on machine vision, comprising a workbench and a visual camera; a feeding mechanism is arranged inside the workbench, baffles are fixed at both ends of the top of the workbench, and a cleaning mechanism is arranged on one side between the baffles, a cylinder is installed on one side of the workbench, a lighting lamp is installed on one side of the top of the workbench, and visual cameras are installed on both ends of the lighting lamp; the cleaning mechanism comprises a brush plate, a conduit, a chamber, a cavity and a nozzle; the brush plate is arranged on one side between the baffles, a chamber is fixed on one side of the brush plate, and a nozzle is installed at the bottom end of the chamber, conduits are connected to both sides of the top of the chamber, and a cavity is fixed on the end of the conduit away from the chamber.

[0008] Preferably, the brush plate includes a rocker plate, a spring and a fixed plate, the rocker plate is fixed to two ends of one side of the brush plate, the rocker plate is fixed to the inner wall of the baffle through a rotating shaft, and a rotating structure is formed between the rocker plate and the baffle.

[0009] Preferably, a spring is fixed on one side of the top of the rocking plate, and a fixing plate is fixed on the inner wall of the baffle at the top of the spring.

[0010] Preferably, one end of the conduit away from the chamber is connected to two sides of the cavity respectively, both sides of the cavity are provided with air intake check valves, and the nozzles are provided in several groups, and the nozzles are in an inclined state.

[0011] Preferably, the cavity comprises a first pulley mechanism, a movable plate, a piston, a connecting rod and a movable rod, the piston is arranged inside the cavity, and one side of the piston is connected to the connecting rod.

[0012] Preferably, one side of the connecting rod is connected to a movable rod, and the side where the movable rod and the connecting rod are connected is set as a cover body, the side where the connecting rod and the movable rod are connected is set as a sphere, and the maximum outer diameter of the sphere is greater than the minimum inner diameter of the cover body.

[0013] Preferably, a movable plate is hinged on one side of the movable rod, and a rotating structure is formed between the movable plate and the movable rod, and a first pulley mechanism is fixed on one side of the movable plate.

[0014] Preferably, the feeding mechanism includes a feeding plate, a connecting plate, a connecting shaft, a rotating plate, a limit plate, a servo motor and a second pulley mechanism. The feeding plate is arranged at both ends inside the workbench, and connecting plates are hinged on both sides of the bottom of the feeding plate.

[0015] Preferably, a limiting plate is hinged on one side of the connecting plate, and the top end of the limiting plate is hinged and fixed to the workbench, and a rotating plate is hinged on the other side of the connecting plate.

[0016] Preferably, a connecting shaft is fixed to the bottom of the inner wall of the rotating plate, and one end of the connecting shaft is connected to a second pulley mechanism, and a servo motor is installed on a side of the second pulley mechanism away from the connecting shaft.

[0017] The invention provides a support rod size measuring device based on machine vision, which has the following advantages:

[0018] By providing a cleaning mechanism, when the feeding plate rises to convey the product to be inspected forward, its top presses one side of the rocking plate to flip upward, so that the other side flips downward at the center position, driving the brush plate fixed thereto to press downward, and the conveyed product to be inspected passes through the bottom of the brush plate by friction, and while the brush plate is pressed downward, the impurities attached to the surface of the product are effectively brushed off by increasing the cleaning effect;

[0019] Furthermore, a chamber is provided on one side of the brush plate. During the transmission process, the first pulley mechanism and the movable plate cooperate to enable the connecting rod to drive the piston to reciprocate in the cavity to draw air. Intake check valves are provided on both sides of the cavity, so that when the piston moves, air can only enter the cavity and be discharged from the conduit through the nozzle at the bottom of the chamber, and the impurities brushed off by the brush plate are blown to the outside of the product to be inspected, so as to avoid the attachment of the impurities to the subsequent product to be inspected during the transmission process, thereby improving the measurement accuracy of the size measurement equipment of the product to be inspected and avoiding the attachment of impurities to affect the image acquisition of the machine vision system;

[0020] By providing a feeding mechanism, the servo motor is started to drive the connecting shaft to rotate through the second pulley mechanism, so that the rotating plate fixed thereto rotates, driving the connecting plate to pull the feeding plate to move up and down while performing reciprocating motion back and forth. The distance of each forward movement is the same as the spacing between the slots on the feeding plate. When the product to be inspected is transmitted to the bottom of the visual camera, the feeding plate moves downward so that it is stably placed on the workbench, thereby enhancing the stability of the conveying of the size measuring equipment for the product to be inspected, and accurately positioning the product to be inspected during image acquisition by the machine vision system, thereby improving the acquisition quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view three-dimensional structure schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention when viewed from above;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the detection state of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the workbench of the present invention when it is cut open and viewed from above;

[0025] Figure 5It is a schematic diagram of the three-dimensional structure of the workbench of the present invention when it is cut open and viewed from above;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the feeding plate of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the brush plate of the present invention in a half-section state;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the chamber of the present invention from a top view;

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the chamber of the present invention when viewed from above;

[0030] Fig.10 It is a schematic diagram of a three-dimensional structure of a cavity in a half-cut state viewed from above;

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the cavity in a half-section state viewed from above.

[0032] Explanation of the reference numerals in the figure: 1. workbench; 2. cleaning mechanism; 201. brush plate; 2011. rocking plate; 2012. spring; 2013. fixed plate; 202. conduit; 203. chamber; 204. cavity; 2041. first pulley mechanism; 2042. movable plate; 2043. piston; 2044. connecting rod; 2045. movable rod; 205. nozzle; 3. baffle; 4. feeding mechanism; 401. feeding plate; 402. connecting plate; 403. connecting shaft; 404. rotating plate; 405. limit plate; 406. servo motor; 407. second pulley mechanism; 5. cylinder; 6. lighting lamp; 7. visual camera. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 11The present invention provides a support rod size measuring device based on machine vision, comprising a workbench 1 and a visual camera 7; a feeding mechanism 4 is arranged inside the workbench 1, baffles 3 are fixed at both ends of the top of the workbench 1, and a cleaning mechanism 2 is arranged on one side between the baffles 3, a cylinder 5 is installed on one side of the workbench 1, a lighting lamp 6 is installed on one side of the top of the workbench 1, and visual cameras 7 are installed on both ends of the lighting lamp 6; the feeding mechanism 4 comprises a feeding plate 401, a connecting plate 402, a connecting shaft 403, a rotating plate 404, a limiting plate 405, a servo motor 406 and A second pulley mechanism 407, a feeding plate 401 is arranged at both ends inside the workbench 1, connecting plates 402 are hinged on both sides of the bottom of the feeding plate 401, a limiting plate 405 is hinged on one side of the connecting plate 402, and the top of the limiting plate 405 is hinged and fixed to the workbench 1, a rotating plate 404 is hinged on the other side of the connecting plate 402, a connecting shaft 403 is fixed on the bottom of the inner wall of the rotating plate 404, and one end of the connecting shaft 403 is connected to the second pulley mechanism 407, and a servo motor 406 is installed on the side of the second pulley mechanism 407 away from the connecting shaft 403;

[0035] Reference Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, when the device is used, the servo motor 406 is started to drive the connecting shaft 403 to rotate through the second pulley mechanism 407, so that the rotating plate 404 fixed thereto rotates, driving the connecting plate 402 to pull the feeding plate 401 to move up and down while performing a forward and backward reciprocating motion, and the limit plate 405 realizes the movement of the connecting plate 402, and the distance of each forward movement is the same as the spacing of the slots on the feeding plate 401. When the feeding plate 401 moves downward, the products to be tested are stably placed on the workbench 1, and the products to be tested are moved forward one by one with the slots as support, so that the stability of the conveying is enhanced, the rolling phenomenon of the products to be tested is avoided, and the quality of collection is improved;

[0036] The cleaning mechanism 2 includes a brush plate 201, a conduit 202, a chamber 203, a cavity 204 and a nozzle 205; the brush plate 201 is arranged on one side between the baffles 3, the chamber 203 is fixed on one side of the brush plate 201, and the nozzle 205 is installed at the bottom end of the chamber 203, both sides of the top of the chamber 203 are connected to the conduit 202, and the cavity 204 is fixed at one end of the conduit 202 away from the chamber 203, and the conduit 202 away from the chamber 203 is fixed to the cavity 204. One end is connected to both sides of the cavity 204 respectively, both sides of the cavity 204 are provided with an air intake check valve, a plurality of nozzles 205 are provided, and the nozzles 205 are in an inclined state, the brush plate 201 includes a rocking plate 2011, a spring 2012 and a fixing plate 2013, the rocking plate 2011 is fixed to both ends of one side of the brush plate 201, the rocking plate 2011 is fixed to the inner wall of the baffle 3 through a rotating shaft, and a rotating shaft is formed between the rocking plate 2011 and the baffle 3. Structure, a spring 2012 is fixed on one side of the top of the rocking plate 2011, and a fixed plate 2013 is fixed on the inner wall of the baffle 3 at the top of the spring 2012, the cavity 204 includes a first pulley mechanism 2041, a movable plate 2042, a piston 2043, a connecting rod 2044 and a movable rod 2045, the piston 2043 is arranged inside the cavity 204, one side of the piston 2043 is connected to the connecting rod 2044, one side of the connecting rod 2044 is connected to the movable rod 2045, and the side where the movable rod 2045 is connected to the connecting rod 2044 is set as a cover body, the side where the connecting rod 2044 is connected to the movable rod 2045 is set as a sphere, and the maximum outer diameter of the sphere is greater than the minimum inner diameter of the cover body, one side of the movable rod 2045 is hinged with the movable plate 2042, and a rotating structure is formed between the movable plate 2042 and the movable rod 2045, and the first pulley mechanism 2041 is fixed on one side of the movable plate 2042;

[0037] Reference Figure 1 , Figure 7 , Fig. 9 and Fig.11As shown, when the device is in use, when the feeding plate 401 rises to convey the product to be inspected forward, its top presses one side of the rocking plate 2011 upward, causing the other side to flip downward at the center position, and the other side of the rocking plate 2011 is fixed to the brush plate 201, so that the brush plate 201 is pressed downward, and the conveyed product to be inspected passes through the bottom of the brush plate 201 by friction, and the impurities attached to the surface of the product are effectively brushed off by increasing the cleaning effect while the brush plate 201 is pressed downward, and when the feeding plate 401 moves downward, the rocking plate 2011 resets the brush plate 201 under the action of the spring 2012, and during the conveying process, the connecting shaft 403 drives the movable plate 2042 to rotate through the first pulley mechanism 2041, so that the movable rod 2045 pulls the connecting rod 2044 to reciprocate, and the connecting rod 2044 and the movable rod 2045 are connected by a ball, so that they can be 3 The connecting rod 2044 drives the piston 2043 to reciprocate in the cavity 204 to draw air. Inlet check valves are arranged on both sides of the cavity 204, so that when the piston 2043 moves, air can only enter the cavity 204, and then be discharged from the conduit 202 through the nozzle 205 at the bottom of the chamber 203, and the impurities brushed off by the brush plate 201 are blown to the outside of the product to be inspected, so as to avoid adhesion to the subsequent products to be inspected during the transmission process, thereby improving the measurement accuracy of the equipment. When the product to be inspected is transmitted to the bottom of the visual camera 7, the feeding plate 401 moves downward so that it is stably placed on the workbench 1, and the lighting lamp 6 fully illuminates the product to be inspected to assist the image acquisition of the visual camera 7. The size parameters of the product to be inspected are obtained by calculating the acquired image. When there is an unqualified product, the cylinder 5 is started to push the product from one side, and the qualified product slides from one side of the workbench 1.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support rod dimension measuring device based on machine vision, comprising a workbench (1) and a visual camera (7); Features: A feeding mechanism (4) is arranged inside the workbench (1), baffles (3) are fixed at both ends of the top of the workbench (1), and a cleaning mechanism (2) is arranged on one side between the baffles (3), a cylinder (5) is installed on one side of the workbench (1), a lighting lamp (6) is installed on one side of the top of the workbench (1), and visual cameras (7) are installed on both ends of the lighting lamp (6); The cleaning mechanism (2) comprises a brush plate (201), a conduit (202), a chamber (203), a cavity (204) and a nozzle (205); The brush plate (201) is arranged on one side between the baffles (3); a chamber (203) is fixed on one side of the brush plate (201); a nozzle (205) is installed at the bottom end of the chamber (203); both sides of the top end of the chamber (203) are connected to conduits (202); and a cavity (204) is fixed at one end of the conduit (202) away from the chamber (203).

2. A support rod size measuring device based on machine vision according to claim 1, Features: The brush plate (201) comprises a rocking plate (2011), a spring (2012) and a fixed plate (2013); the rocking plate (2011) is fixed to two ends of one side of the brush plate (201); the rocking plate (2011) is fixed to the inner wall of the baffle plate (3) via a rotating shaft; and a rotating structure is formed between the rocking plate (2011) and the baffle plate (3).

3. A support rod size measuring device based on machine vision according to claim 2, Features: A spring (2012) is fixed to one side of the top of the rocking plate (2011), and a fixing plate (2013) is fixed to the inner wall of the baffle (3) at the top of the spring (2012).

4. The support rod size measuring device based on machine vision according to claim 1, Features: One end of the conduit (202) away from the chamber (203) is respectively connected to two sides of the cavity (204), and both sides of the cavity (204) are provided with an air intake check valve. The nozzles (205) are provided in a plurality of groups, and the nozzles (205) are in an inclined state.

5. The support rod size measuring device based on machine vision according to claim 1, Features: The cavity (204) comprises a first pulley mechanism (2041), a movable plate (2042), a piston (2043), a connecting rod (2044) and a movable rod (2045); the piston (2043) is arranged inside the cavity (204), and one side of the piston (2043) is connected to the connecting rod (2044).

6. A support rod size measuring device based on machine vision according to claim 5, Features: One side of the connecting rod (2044) is connected to a movable rod (2045), and the side where the movable rod (2045) and the connecting rod (2044) are connected is set as a cover body, and the side where the connecting rod (2044) and the movable rod (2045) are connected is set as a sphere, and the maximum outer diameter of the sphere is greater than the minimum inner diameter of the cover body.

7. A support rod size measuring device based on machine vision according to claim 6, Features: A movable plate (2042) is hingedly connected to one side of the movable rod (2045), and a rotating structure is formed between the movable plate (2042) and the movable rod (2045). A first pulley mechanism (2041) is fixed to one side of the movable plate (2042).

8. The support rod size measuring device based on machine vision according to claim 1, Features: The feeding mechanism (4) comprises a feeding plate (401), a connecting plate (402), a connecting shaft (403), a rotating plate (404), a limiting plate (405), a servo motor (406) and a second pulley mechanism (407); the feeding plate (401) is arranged at two ends inside the workbench (1); and the two sides of the bottom of the feeding plate (401) are hinged with connecting plates (402).

9. A support rod size measuring device based on machine vision according to claim 8, Features: One side of the connection plate (402) is hingedly connected to a limit plate (405), and the top end of the limit plate (405) is hingedly fixed to the workbench (1), and the other side of the connection plate (402) is hingedly connected to a rotating plate (404).

10. A support rod size measuring device based on machine vision according to claim 9, Features: A connecting shaft (403) is fixed to the bottom of the inner wall of the rotating plate (404), and one end of the connecting shaft (403) is connected to a second pulley mechanism (407), and a servo motor (406) is installed on the side of the second pulley mechanism (407) away from the connecting shaft (403).

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