Machine vision detection clamp with buffer structure

Abstract

The utility model relates to the technical field of machine vision detection clamps, in particular to a machine vision detection clamp with a buffer structure, which comprises a mechanical arm main body, the bottom end of the mechanical arm main body is fixedly connected with a clamp air cylinder through an air cylinder, and the top end of the mechanical arm main body is fixedly provided with a rotating mechanism through a bolt. The rotating mechanism is arranged on the mechanical arm body and penetrates to one side of the outer wall of the mechanical arm body, the rotating mechanism comprises a connecting ring, the connecting ring is rotationally connected to the outer wall of the mechanical arm body, and the side, away from the mechanical arm body, of the rotating mechanism is slidably connected with a detection mechanism. According to the utility model, through mutual cooperation of internal parts of the rotating mechanism, the visual detection lens is conveniently driven to rotate around the outer wall of the clamp cylinder, visual detection of the periphery of the outer wall of a product is completed, and through mutual cooperation of internal parts of the detection mechanism, protection of the visual detection lens can be completed; the visual inspection lens is prevented from being damaged to influence the detection quality.

Description

Technical Field

[0001] This utility model relates to the field of machine vision inspection fixture technology, and specifically to a machine vision inspection fixture with a buffer structure. Background Technology

[0002] Machine vision is a rapidly developing branch of artificial intelligence. Simply put, machine vision uses machines to replace human eyes for measurement and judgment. A machine vision system uses machine vision products (i.e., image acquisition devices, which are divided into CMOS and CCD) to convert the captured target into image signals, which are then transmitted to a dedicated image processing system to obtain the shape information of the captured target. Based on pixel distribution, brightness, color, and other information, the image system converts the data into digital signals. The image system performs various operations on these signals to extract the features of the target, and then controls the actions of the equipment on site based on the judgment results. Machine vision technology is also used in inspection platforms to inspect processed workpieces.

[0003] A search revealed a utility model patent with publication number CN209166475U, which discloses a visual inspection fixture and its visual inspection device. The device includes a main body, a turntable, and a fixture. The turntable is located on the inner wall of the top of the main body, and the fixture is mounted on the turntable. Quick-change left and right limit switches are fixedly mounted on the turntable. An indexer is installed inside the main body, and its output is connected to the inner wall of the bottom of the turntable. The indexer is electrically connected to an external power supply via an external indexer switch. This utility model provides a visual inspection device that allows products to slide into position and self-secure when placed on the fixture body, simplifying operation. The quick-change left and right limit switches enable rapid fixture changes for different products. The rotation of the indexer facilitates quick repositioning of two sets of products, effectively improving equipment efficiency and reducing product placement time.

[0004] While the aforementioned patent achieves quick-change of fixtures through quick-change left and quick-change right limit switches, allowing for rapid replacement of different fixtures for different products and quick switching between two sets of products via the rotation of the indexer, effectively improving equipment efficiency and reducing product placement time, the vision inspection module in the aforementioned patent cannot perform all-around vision inspection of the product surface. This limits the equipment's vision inspection capabilities. Furthermore, the lack of a protective mechanism for the vision inspection lens means that when the product is not clamped tightly during inspection, the product is prone to shaking, which can cause scratches and other damage to the vision inspection module lens.

[0005] Therefore, it is necessary to propose a machine vision inspection fixture with a buffer structure to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a machine vision inspection fixture with a buffer structure. Through the cooperation of the internal parts of the rotating mechanism, the vision inspection lens can be easily rotated around the outer wall of the fixture cylinder to complete the visual inspection of the outer wall of the product. The cooperation of the internal parts of the inspection mechanism can also protect the vision inspection lens, preventing damage to the lens and affecting the inspection quality. This solves the problem that the existing vision inspection module cannot perform all-round visual inspection of the product surface, which limits the visual inspection of the product. Furthermore, the lack of a protective mechanism for the vision inspection lens makes it easy for the product to shake and cause scratches or other damage to the vision inspection module lens when the fixture is not clamped tightly during product inspection.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a machine vision inspection fixture with a buffer structure, comprising a robotic arm body, wherein a fixture cylinder is fixedly connected to the bottom end of the robotic arm body via a cylinder, and a rotating mechanism is bolted to the top end of the robotic arm body and extends through to one side of the outer wall of the robotic arm body; a detection mechanism is slidably connected to the side of the rotating mechanism away from the robotic arm body.

[0008] The rotating mechanism includes a connecting ring, which is rotatably connected to the outer wall of the robotic arm body and extends into the interior of the robotic arm body. A fixing plate is mechanically fixed to the right side of the connecting ring, and a fixing bracket is mechanically fixed to the side of the fixing plate away from the connecting ring.

[0009] The detection mechanism includes a movable plate that slides and fits against the outer wall of a fixed plate. A protective plate is mechanically fixed to the bottom of the movable plate. A telescopic spring is mechanically connected between the interior of the movable plate and the bottom of the fixed plate. A visual inspection and processing terminal is mechanically fixed to the side of the fixed bracket away from the movable plate. An auxiliary light source is bolted to the bottom of the visual inspection and processing terminal. A visual inspection lens is mechanically fixed to the bottom of the auxiliary light source and is located above the protective plate.

[0010] Preferably, the rotating mechanism further includes a servo motor, which is bolted to the top of the robotic arm body. The output shaft of the servo motor is mechanically connected to a transmission gear via a coupling and is rotatably connected to the inside of the robotic arm body. The top of the connecting ring is mechanically connected to a toothed ring, which is located on one side of the transmission gear.

[0011] Preferably, the connecting ring is rotatably connected to the outer wall of the robotic arm body via ball bearings, and the clamping cylinder moves telescopically at the bottom end of the robotic arm body via a telescopic cylinder.

[0012] Preferably, the robotic arm body has a transmission groove inside that matches the transmission gear and the gear ring. The transmission gear and the gear ring mesh with each other through the groove. The fixed bracket is inclined at a certain angle to the robotic arm body.

[0013] Preferably, the movable plate has a connecting groove inside that matches the telescopic spring, and a limiting groove that matches the fixed plate. The outer wall of the fixed plate is machined with a limiting post.

[0014] Preferably, the main material of the protective plate is resin, which has extremely high transparency. The bottom of the protective plate is processed with rounded corners, and the rounded corner surfaces are covered with sponge.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. After the product is clamped and fixed by the clamping cylinder, the servo motor is started. The servo motor drives the transmission gear to rotate, the transmission gear rotates the gear ring, the gear ring rotates the connecting ring, and the connecting ring rotates the fixing plate on the outer wall of the robot arm body. The rotation of the fixing plate drives the vision inspection lens to rotate through the fixing bracket. At the same time, by tilting the fixing bracket and the robot arm body at a certain angle, the vision inspection lens can form a certain tilt angle with the outer wall of the product clamped and fixed on the clamping cylinder, so that the vision inspection lens can complete the visual inspection of the product surface around the perimeter.

[0017] 2. The vision inspection lens, auxiliary light source, and vision inspection processing terminal are installed and fixed on the fixed bracket using bolts. The rotation of the connecting ring drives the fixed plate to rotate on the outer wall of the robotic arm. The fixed plate drives the vision inspection lens to rotate through the fixed bracket to complete the vision inspection. At the same time, the fixed plate drives the protective plate to rotate synchronously with the vision inspection lens through the movable plate. The protective plate protects the bottom of the vision inspection lens. When the protective plate comes into contact with the product surface during rotation, it will be pushed by the movable plate to compress the telescopic spring and move. This causes the movable plate to slide on the outer wall of the fixed plate, which in turn drives the protective plate to slide between the product and the vision inspection lens. This provides buffer protection between the vision inspection lens and the product, thus preventing the vision inspection lens from directly contacting the product surface and causing scratches on the vision inspection lens surface. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the main body of the robotic arm of this utility model;

[0021] Figure 3 This is a cross-sectional structural diagram of the movable plate of this utility model;

[0022] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Main body of the robotic arm; 101. Grip cylinder; 2. Rotation mechanism; 201. Servo motor; 202. Transmission gear; 203. Gear ring; 204. Connecting ring; 205. Fixing plate; 206. Fixing bracket; 3. Detection mechanism; 301. Protective plate; 302. Movable plate; 303. Vision inspection lens; 304. Auxiliary light source; 305. Vision inspection processing terminal; 306. Telescopic spring. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] This utility model provides, for example Figure 1-4 The machine vision inspection fixture with a buffer structure shown includes a robotic arm body 1. The bottom end of the robotic arm body 1 is connected and fixed with a fixture cylinder 101 via a cylinder. The top end of the robotic arm body 1 is bolted with a rotating mechanism 2, which extends through to one side of the outer wall of the robotic arm body 1. The side of the rotating mechanism 2 away from the robotic arm body 1 is slidably connected with an inspection mechanism 3.

[0027] The rotating mechanism 2 includes a connecting ring 204, which is rotatably connected to the outer wall of the robotic arm body 1 and extends into the interior of the robotic arm body 1. A fixing plate 205 is mechanically fixed to the right side of the connecting ring 204, and a fixing bracket 206 is mechanically fixed to the side of the fixing plate 205 away from the connecting ring 204.

[0028] The inspection mechanism 3 includes a movable plate 302, which slides and fits against the outer wall of the fixed plate 205. A protective plate 301 is mechanically fixed to the bottom of the movable plate 302. A telescopic spring 306 is mechanically connected between the interior of the movable plate 302 and the bottom of the fixed plate 205. A visual inspection processing terminal 305 is mechanically fixed to the side of the fixed bracket 206 away from the movable plate 302. An auxiliary light source 304 is bolted to the bottom of the visual inspection processing terminal 305. A visual inspection lens 303 is mechanically fixed to the bottom of the auxiliary light source 304 and is located above the protective plate 301.

[0029] The mutual cooperation between the internal parts of the rotating mechanism 2 facilitates the rotation of the vision inspection lens 303 around the outer wall of the fixture cylinder 101, thereby completing the visual inspection of the outer wall of the product. The mutual cooperation between the internal parts of the inspection mechanism 3 also protects the vision inspection lens 303, preventing damage to the vision inspection lens 303 from affecting the inspection quality.

[0030] Refer to the instruction manual appendix Figure 1-4 The rotating mechanism 2 also includes a servo motor 201, which is bolted to the top of the robotic arm body 1. The output shaft of the servo motor 201 is mechanically connected to a transmission gear 202 via a coupling and is rotatably connected to the inside of the robotic arm body 1. The top of the connecting ring 204 is mechanically connected to a toothed ring 203 and is located on one side of the transmission gear 202. Through the mutual cooperation between the internal parts of the rotating mechanism 2, the connecting ring 204 can be driven to rotate on the outer wall of the robotic arm body 1.

[0031] Refer to the instruction manual appendix Figure 1-4 The connecting ring 204 is rotatably connected to the outer wall of the robotic arm body 1 via ball bearings. The clamp cylinder 101 moves telescopically at the bottom of the robotic arm body 1 via a telescopic cylinder. It is rotatably connected to the outer wall of the robotic arm body 1 via the connecting ring 204 and ball bearings, which facilitates the rotation of the connecting ring 204 on the outer wall of the robotic arm body 1.

[0032] Refer to the instruction manual appendix Figure 1-4 The robotic arm body 1 has a transmission groove inside that matches the transmission gear 202 and the gear ring 203. The transmission gear 202 and the gear ring 203 mesh with each other through the tooth groove. The fixed bracket 206 is tilted at a certain angle to the robotic arm body 1. The fixed bracket 206 is tilted at a certain angle to the robotic arm body 1, which facilitates the visual inspection lens 303 to inspect the outer wall of the product clamped and fixed on the clamp cylinder 101.

[0033] Refer to the instruction manual appendix Figure 1-4The movable plate 302 has a connecting groove inside that matches the telescopic spring 306, and a limiting groove inside that matches the fixed plate 205. The outer wall of the fixed plate 205 is machined with a limiting post. The movable plate 302 has a connecting groove inside that matches the telescopic spring 306, and a limiting groove inside that matches the fixed plate 205, which facilitates the movable plate 302 to slide on the outer wall of the fixed plate 205 via the telescopic spring 306.

[0034] Refer to the instruction manual appendix Figure 1-4 The main material of the protective plate 301 is resin, which has extremely high transparency. The bottom of the protective plate 301 is processed with rounded corners, and the surface of the rounded corners is covered with sponge. The rounded corners and sponge on the surface of the rounded corners make it easy for the protective plate 301 to contact the product surface through the arc surface without causing scratches to the product surface.

[0035] The working principle of this practical application is as follows:

[0036] Refer to the instruction manual appendix Figure 1-4 After the product is clamped and fixed by the clamping cylinder 101, the servo motor 201 is started. The servo motor 201 drives the transmission gear 202 to rotate. The rotation of the transmission gear 202 drives the gear ring 203 to rotate. The rotation of the gear ring 203 drives the connecting ring 204 to rotate. The rotation of the connecting ring 204 drives the fixing plate 205 to rotate on the outer wall of the robot arm body 1. The rotation of the fixing plate 205 drives the vision inspection lens 303 to rotate through the fixing bracket 206. At the same time, the fixing bracket 206 is tilted at a certain angle with the robot arm body 1, so that the vision inspection lens 303 and the outer wall of the product clamped and fixed on the clamping cylinder 101 can form a certain tilt angle, so that the vision inspection lens 303 can complete the visual inspection of the product surface around the perimeter.

[0037] Refer to the instruction manual appendix Figure 1-4The vision inspection lens 303, auxiliary light source 304, and vision inspection processing terminal 305 are fixedly mounted on the fixed bracket 206 by bolts. The rotation of the connecting ring 204 drives the fixed plate 205 to rotate on the outer wall of the robot arm body 1. The fixed plate 205 drives the vision inspection lens 303 to rotate through the fixed bracket 206 to complete the vision inspection. At the same time, the fixed plate 205 drives the protective plate 301 to rotate synchronously with the vision inspection lens 303 through the movable plate 302, so that the protective plate 301 protects the bottom of the vision inspection lens 303. When the protective plate 301 comes into contact with the product surface during rotation, it will be pushed by the movable plate 302 to compress the telescopic spring 306 and move. The movable plate 302 slides and extends on the outer wall of the fixed plate 205, which drives the protective plate 301 to slide and extend. The protective plate 301 slides between the product and the vision inspection lens 303, providing buffer protection between the vision inspection lens 303 and the product, thus preventing the vision inspection lens 303 from directly contacting the product surface and causing scratches on the surface of the vision inspection lens 303.

[0038] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A machine vision inspection fixture having a cushioning structure, characterized by: Including mechanical arm body (1), the bottom end of mechanical arm body (1) is fixed with clamp cylinder (101) by cylinder connection, the top end of mechanical arm body (1) is bolted with rotating mechanism (2), and it is connected to the outside wall of mechanical arm body (1) side, the side of rotating mechanism (2) away from mechanical arm body (1) is slidably connected with detection mechanism (3); The rotating mechanism (2) includes a connecting ring (204), which is rotatably connected to the outer wall of the mechanical arm body (1) and penetrates into the inside of the mechanical arm body (1), the right side of the connecting ring (204) is mechanically fixed with a fixed plate (205), and the side of the fixed plate (205) away from the connecting ring (204) is mechanically fixed with a fixed support (206); The detection mechanism (3) includes a movable plate (302), which is slidably connected to the outer wall of the fixed plate (205), the bottom end of the movable plate (302) is mechanically fixed with a protective plate (301), the inside of the movable plate (302) and the bottom end of the fixed plate (205) are mechanically connected with a telescopic spring (306), the side of the fixed support (206) away from the movable plate (302) is mechanically fixed with a visual detection processing terminal (305), the bottom end of the visual detection processing terminal (305) is bolted with an auxiliary light source (304), the bottom end of the auxiliary light source (304) is mechanically fixed with a visual detection lens (303), and is located above the protective plate (301).

2. The machine vision inspection fixture with a buffering structure according to claim 1, wherein: The rotating mechanism (2) further comprises a servo motor (201), the servo motor (201) is bolted on the top end of the mechanical arm body (1), the output shaft of the servo motor (201) is mechanically connected with a transmission gear (202) through a shaft coupling, and is rotatably connected to the inside of the mechanical arm body (1), the top end of the connecting ring (204) is mechanically connected with a gear ring (203), and is located on one side of the transmission gear (202).

3. The machine vision inspection fixture with a cushion structure according to claim 1, wherein: The connecting ring (204) is rotatably connected to the outer wall of the mechanical arm body (1) by balls, and the clamp cylinder (101) is movably connected to the bottom end of the mechanical arm body (1) by a telescopic cylinder.

4. The machine vision inspection fixture having a cushion structure according to claim 2, wherein: The inside of the mechanical arm body (1) is provided with a transmission groove matched with the transmission gear (202) and the gear ring (203), the transmission gear (202) and the gear ring (203) are engaged with each other through the gear groove, and the fixed support (206) and the mechanical arm body (1) are inclined at a certain angle.

5. The machine vision inspection fixture having a cushion structure according to claim 1, wherein: The inside of the movable plate (302) is provided with a connecting groove matched with the telescopic spring (306), and is provided with a limiting sliding groove matched with the fixed plate (205), and the outer wall of the fixed plate (205) is mechanically processed with a limiting column.

6. The machine vision inspection fixture having a cushion structure according to claim 1, wherein: The main material of the protective plate (301) is resin, which has very high transparency, the bottom end of the protective plate (301) is processed with a round corner, and the round corner surface is attached with sponge.

Images