Product appearance detection device based on machine vision

Abstract

The invention relates to the technical field of appearance detection, and provides a product appearance detection device based on machine vision, which comprises a base, an intermittent material taking mechanism, a multidirectional detection mechanism and a reciprocating material pushing mechanism, the output end of the first motor is fixedly connected with a coaxially-arranged rotating shaft through a coupler, the accuracy of machine vision detection is ensured, after cleaning is completed, the first motor is started, a straight rod is driven to rotate, and the straight rod is stably transferred to a fixed disc of a fixed chassis through a hinge structure of a connecting rod and a sliding plate, so that preparation is made for appearance detection; according to the technical scheme, automatic operation of workpiece feeding and surface cleaning is achieved, so that the detection efficiency is improved, the accuracy of machine vision detection is enhanced through cleaning, the comprehensiveness and reliability of product appearance detection are ensured, and the problems that in the prior art, the detection automation degree is low, and detection is incomplete are solved through the technical scheme.

Description

Technical Field

[0001] The present invention relates to the technical field of appearance detection, and in particular to a product appearance detection device based on machine vision. Background Art

[0002] With the rapid development of the manufacturing industry, product appearance quality has become one of the important indicators for measuring product competitiveness. Machine vision technology, as the core technology in the field of automated inspection, has gradually occupied a dominant position in product appearance inspection with its advantages of high precision, high efficiency and non-contact inspection. By integrating advanced machine vision algorithms with high-precision image acquisition equipment, it can achieve comprehensive and detailed inspection of product appearance. It can capture every detail of the product, whether it is a tiny scratch, color difference or shape deviation, it can be accurately identified. This technology not only greatly improves the accuracy of inspection, but also significantly improves the inspection efficiency, providing strong support for quality control on the production line. In addition, the product appearance inspection device based on machine vision also has powerful data processing capabilities, can analyze the inspection results in real time, and grade or screen the products according to preset standards, providing a reliable basis for the company's quality management and production decisions. In summary, the device plays an irreplaceable role in improving product appearance quality, reducing defective product rates, and improving production efficiency.

[0003] The application with authorization announcement number CN215640891U in the prior art is named as: A product appearance detection device based on machine vision, including: a driving unit and a detection unit, the detection unit including a fixed base, a rotating chassis and an image collector, the fixed base is used to fix the detection unit, the rotating chassis is connected to the fixed base, and the driving unit provides rotational power, and at least one image collector is connected to the rotating chassis. Through the above method, the present application performs 360° rotation shooting relative to the detection object, and detects the product appearance in all directions, thereby improving the detection accuracy, ensuring the qualified rate of the detection, and saving the cost of secondary detection; the device has a high degree of automation, replaces the operation of workers, improves the detection efficiency, and effectively limits the appearance defect rate of the product;

[0004] However, this patent uses motor-driven rotational shooting, but manual intervention is still required in the entire inspection process, which reduces the overall level of automation. In addition, in terms of incomplete inspection, although multiple industrial cameras and 360° rotational shooting are used, there are still blind spots for inspection for some products with complex surfaces or obstructed parts, and it is impossible to fully ensure that all appearance details are accurately captured, affecting the comprehensiveness and accuracy of the inspection results. Summary of the invention

[0005] The present invention provides a product appearance inspection device based on machine vision, which solves the problems of low degree of inspection automation and incomplete inspection in the related art.

[0006] The technical solution of the present invention is as follows:

[0007] It includes a base, an intermittent feeding mechanism, a multi-directional detection mechanism and a reciprocating feeding mechanism, the intermittent feeding mechanism includes a support plate, one side of the support plate is fixedly connected to one side of the base, a first motor is installed on one side of the support plate, the output end of the first motor is fixedly connected to a coaxially arranged rotating shaft through a coupling, a straight rod is movably hinged on the outer peripheral surface of the rotating shaft, one end of the straight rod is movably hinged to a connecting rod, the other end of the connecting rod is movably hinged to a slide plate, and a fixed seat is arranged on the top of the base.

[0008] Preferably, a side plate is fixedly connected to one side of the support plate, a first slide groove is provided inside the side plate, and the slide plate is slidably connected inside the first slide groove;

[0009] The inside of the skateboard is provided with an inclined groove, the inside of the side plate is provided with a sliding groove, the insides of the inclined groove and the sliding groove are slidably connected with a sliding rod, one side of the sliding rod is fixedly connected with a movable rod, and the bottom of the movable rod is provided with a first suction cup.

[0010] Preferably, the multi-directional detection mechanism comprises a third motor, the third motor is installed inside the base, the output end of the third motor is fixedly connected to a coaxially arranged first guide rod through a coupling, and a rotating block is fixedly sleeved on the outer peripheral surface of the first guide rod;

[0011] A second guide rod is rotatably mounted inside the base, a cleaning rod is fixedly sleeved on the outer circumference of the second guide rod, a straight groove is opened inside the cleaning rod, and the rotating block is slidably connected inside the straight groove.

[0012] Preferably, a second guide rod is rotatably mounted inside the base, a synchronous belt is provided between the second guide rod and the first guide rod via a synchronous wheel sleeve, and a first bevel gear is fixedly sleeved on the outer circumference of the second guide rod;

[0013] The top of the base is fixedly connected to a fixed chassis, the top of the fixed chassis is fixedly connected to a fixed plate, a third guide rod is rotatably installed inside the fixed plate, a second bevel gear is fixedly sleeved on the outer circumference of the third guide rod, and the second bevel gear is meshingly connected with the first bevel gear.

[0014] Preferably, a fixing plate is fixedly connected inside the base, a second slide groove is provided inside the fixing plate, a straight plate is slidably connected inside the second slide groove, a threaded hole is provided inside the straight plate, and the third guide rod is threadedly connected inside the threaded hole;

[0015] The interior of the fixed plate is provided with two symmetrically arranged arc-shaped slide grooves three, the interior of the slide groove three is slidably connected with a movable seat, a transmission rod is movably hinged between the movable seat and the straight plate, the top of the movable seat is fixedly connected with a bottom plate, and a detection head is installed on the top of the bottom plate.

[0016] Preferably, the reciprocating material picking mechanism includes a second motor, which is installed inside the base. The output end of the second motor is fixedly connected to a coaxially arranged output shaft through a coupling. A rotating rod is fixedly sleeved on the outer peripheral surface of the output shaft, and one end of the rotating rod is movably hinged with a hinged rod.

[0017] Preferably, a guide block is fixedly connected inside the base, a sector gear is rotatably mounted on the guide block, and the other end of the hinged rod is movably hinged to the sector gear.

[0018] Preferably, a round rod is rotatably installed inside the guide block, and a first gear and a second gear are respectively sleeved on the outer circumference of the round rod, the second gear and the fan-shaped gear are meshingly connected, a slide groove three is opened inside the guide block, a push rod is slidably connected inside the slide groove three, a second suction cup is installed on one side of the push rod, a rack is fixedly connected to the bottom of the push rod, and the rack is meshingly connected to the first gear.

[0019] The working principle and beneficial effects of the present invention are:

[0020] 1. In the present invention, by setting up structures such as an intermittent material taking mechanism, before inspection, the workpiece is placed on the top of the fixed seat and firmly clamped by a clamp. Subsequently, the third motor is started to drive the first guide rod and the rotating block fixed thereon to rotate, and the slider drives the cleaning rod to swing back and forth, effectively removing dust on the top of the workpiece and ensuring the accuracy of machine vision inspection. After cleaning, the first motor is started to drive the straight rod to rotate, and through the hinge structure of the connecting rod and the slide plate, the slide plate can be reciprocated left and right and slide up and down in the side plate. At this time, the first suction cup on the movable rod absorbs the top of the workpiece and smoothly transfers it to the fixed plate of the fixed chassis to prepare for appearance inspection, realizing the automated operation of workpiece loading and surface cleaning, thereby improving the inspection efficiency, and also enhancing the accuracy of machine vision inspection through cleaning, ensuring the comprehensiveness and reliability of product appearance inspection.

[0021] 2. In the present invention, through the arrangement of structures such as a multi-directional detection mechanism, when the workpiece is accurately transferred to the fixed disk, the multi-directional detection mechanism is started, the first guide rod rotates, and the second guide rod is driven to rotate synchronously through the synchronous belt, thereby driving the second bevel gear fixed thereon to rotate, the second bevel gear and the first bevel gear are meshed, the first bevel gear rotates accordingly, and drives the third guide rod to rotate, the reciprocating threaded portion on the third guide rod is threadedly connected to the straight plate, the straight plate moves back and forth left and right with the rotation of the thread, the straight plate drives the two transmission rods and the movable hinged movable seat to move in the fixed disk, so that the base plate and the detection head move synchronously under their traction, the workpiece is located between the two detection heads, and with the reciprocating rotation of the detection head, a comprehensive shooting detection of the workpiece is achieved, thereby improving the comprehensiveness and accuracy of the detection.

[0022] 3. In the present invention, through the arrangement of structures such as the reciprocating material picking mechanism, after the detection structure is completed, the second motor is started to drive the rotating rod to rotate, and the hinged rod on the rotating rod moves accordingly, and drives the fan gear hinged thereon to swing back and forth up and down. Because the fan gear is meshed with the second gear, each swing of the fan gear will drive the second gear to rotate synchronously, and the round rod nested inside the second gear will also rotate accordingly, and drive the first gear fixed thereon to rotate. The first gear is meshed with the rack at the bottom of the push rod, so the push rod reciprocates under the action of the rack, and as the push rod moves, the second suction cup approaches one side of the workpiece and adsorbs the workpiece for unloading, thereby realizing automatic material picking of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal transmission structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the intermittent material taking mechanism of the present invention;

[0027] Figure 4 This is a schematic diagram of the intermittent material taking mechanism from another perspective of the present invention;

[0028] Figure 5 It is a schematic diagram of the multi-directional detection mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of a multi-directional detection mechanism from another viewing angle of the present invention;

[0030] Figure 7 For the present invention Figure 5 Enlarged view of the center labeled A;

[0031] Figure 8It is a schematic diagram of the reciprocating material taking mechanism of the present invention.

[0032] In the figure: 1, intermittent material taking mechanism; 101, side plate; 102, slideway; 103, slide bar; 104, connecting rod; 105, straight rod; 106, first motor; 107, rotating shaft; 108, movable rod; 109, slide plate; 110, first suction cup; 111, inclined slot;

[0033] 2. Multi-directional detection mechanism; 201. Cleaning rod; 202. Fixed plate; 203. Straight groove; 204. First guide rod; 205. Synchronous belt; 206. Second guide rod; 207. Fixed plate; 208. Transmission rod; 209. Straight plate; 210. Third guide rod; 211. Rotating block; 212. Bottom plate; 213. Detection head; 214. First bevel gear; 215. Second bevel gear; 216. Movable seat;

[0034] 3. Reciprocating material taking mechanism; 301. Second suction cup; 302. Guide block; 303. Fan-shaped gear; 304. Articulated rod; 305. Rotating rod; 306. Second motor; 307. First gear; 308. Push rod; 309. Rack; 310. Second gear; 311. Round rod;

[0035] 4. Base; 5. Fixed seat; 6. Support plate; 7. Fixed chassis. DETAILED DESCRIPTION

[0036] The following will be combined with 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.

[0037] Example 1

[0038] like Figures 1 to 8As shown, this embodiment proposes a product appearance inspection device based on machine vision, including a base 4, an intermittent feeding mechanism 1, a multi-directional inspection mechanism 2 and a reciprocating feeding mechanism, the intermittent feeding mechanism 1 includes a support plate 6, one side of the support plate 6 is fixedly connected to one side of the base 4, a first motor 106 is installed on one side of the support plate 6, the output end of the first motor 106 is fixedly connected to a coaxially arranged rotating shaft 107 through a coupling, a straight rod 105 is movably hinged on the outer peripheral surface of the rotating shaft 107, one end of the straight rod 105 is movably hinged to a connecting rod 104, and the other end of the connecting rod 104 is movably hinged to a slide plate 109, a fixed seat 5 is arranged on the top of the base 4, through the arrangement of the intermittent feeding mechanism 1 and other structures, before inspection, the workpiece is placed on the top of the fixed seat 5 and firmly clamped by a clamp, and then , the third motor starts, driving the first guide rod 204 and the rotating block 211 fixed thereon to rotate, and the slider drives the cleaning rod 201 to swing back and forth, effectively removing the dust on the top of the workpiece and ensuring the accuracy of machine vision inspection. After cleaning is completed, the first motor 106 starts, driving the straight rod 105 to rotate, and through the hinge structure of the connecting rod 104 and the slide plate 109, the slide plate 109 can be reciprocated left and right and slide up and down in the side plate 101. At this time, the first suction cup 110 on the movable rod 108 absorbs the top of the workpiece and smoothly transfers it to the fixed plate 202 of the fixed chassis 7 to prepare for appearance inspection, realizing the automated operation of workpiece loading and surface cleaning, thereby improving the inspection efficiency, and also enhancing the accuracy of machine vision inspection through cleaning, ensuring the comprehensiveness and reliability of product appearance inspection.

[0039] like Figures 1 to 8 As shown, one side of the support plate 6 is fixedly connected to the side plate 101, a slide groove 102 is opened inside the side plate 101, a slide plate 109 is slidably connected inside the slide groove 102, an inclined groove 111 is opened inside the slide plate 109, a slide groove 102 is opened inside the side plate 101, the inclined groove 111 and the slide groove 102 are slidably connected to the slide rod 103, one side of the slide rod 103 is fixedly connected to the movable rod 108, and a first suction cup 110 is provided at the bottom of the movable rod 108.

[0040] like Figures 1 to 8 As shown, the multi-directional detection mechanism 2 includes a third motor, which is installed inside the base 4. The output end of the third motor is fixedly connected to a coaxially arranged first guide rod 204 through a coupling. A rotating block 211 is fixedly sleeved on the outer peripheral surface of the first guide rod 204. A second guide rod 206 is rotatably installed inside the base 4. A cleaning rod 201 is fixedly sleeved on the outer peripheral surface of the second guide rod 206. A straight groove 203 is opened inside the cleaning rod 201, and the rotating block 211 is slidably connected to the inside of the straight groove 203.

[0041] In this embodiment, before the product appearance inspection, the workpiece to be inspected is first placed on the top of the fixed seat 5. A clamp is provided on the top of the fixed seat 5. The workpiece is fixed by the clamp. Then the whole inspection device is started, the third motor is started and drives the first guide rod 204 to rotate. When the first guide rod 204 rotates, it drives the rotating block 211 fixed thereon to rotate together. When the rotating block 211 rotates, it drives the cleaning rod 201 slidably sleeved outside it to swing back and forth. After the workpiece is fixed and installed, its height is below the cleaning part at the bottom of the cleaning rod 201, and the height of the cleaning rod 201 can be adjusted according to the height of the workpiece. In this process, the cleaning rod 201 mainly cleans the top of the workpiece. During the appearance inspection, the dust on the surface of the workpiece is effectively cleaned, which is helpful for the accuracy of machine vision inspection.

[0042] Further, after the surface cleaning is completed, the first motor 106 is started, and the first motor 106 drives the straight rod 105 to rotate. Since the straight rod 105 and the connecting rod 104 are hinged, the straight rod 105 will drive the connecting rod 104 to move back and forth at the same time when it rotates. One end of the inner connecting rod 104 is hinged to a slide plate 109 slidably disposed inside the side plate 101, so when the connecting rod 104 moves, it will drive the slide plate 109 to move back and forth along the axial direction of the side plate 101 at the same time;

[0043] In addition, because the inside of the slide plate 109 is provided with an inclined groove 111 that runs through the inside of the slide plate 109, the slide bar 103 fixedly arranged on one side of the movable rod 108 is slidably arranged in the inclined groove 111 and the slide groove 102 opened in the side plate 101 at the same time, so when the slide plate 109 moves back and forth left and right, it can move left and right and slide up and down under the action of the slide bar 103, and the first suction cup 110 connected to the movable rod 108 through the fixed rod also moves with it. When the first suction cup 110 contacts the top surface of the workpiece on the fixed seat 5, it will firmly adsorb the workpiece. Under the action of the suction cup and the movable rod 108, the workpiece is transferred to the fixed plate 202 set on the fixed chassis 7 to wait for appearance inspection.

[0044] Example 2

[0045] like Figures 1 to 8As shown, based on the same concept as the above-mentioned embodiment 1, the present embodiment further proposes that a second guide rod 206 is rotatably installed inside the base 4, a synchronous belt 205 is provided between the second guide rod 206 and the first guide rod 204 through a synchronous wheel sleeve, a first bevel gear 214 is fixedly sleeved on the outer circumference of the second guide rod 206, a fixed chassis 7 is fixedly connected to the top of the base 4, a fixed disk 202 is fixedly connected to the top of the fixed chassis 7, a third guide rod 210 is rotatably installed inside the fixed disk 202, a second bevel gear 215 is fixedly sleeved on the outer circumference of the third guide rod 210, the second bevel gear 215 is meshingly connected with the first bevel gear 214, and through the arrangement of structures such as the multi-directional detection mechanism 2, when the workpiece is accurately transported to the fixed disk 202, the multi-directional detection mechanism 2 is started, and the first bevel gear 214 is meshed with the second bevel gear 215. The guide rod 204 rotates, and the second guide rod 206 is driven to rotate synchronously through the synchronous belt 205, thereby driving the second bevel gear 215 fixed thereon to rotate, and the second bevel gear 215 is meshed with the first bevel gear 214, and the first bevel gear 214 rotates accordingly, and drives the third guide rod 210 to rotate, and the reciprocating threaded portion on the third guide rod 210 is threadedly connected to the straight plate 209, and the straight plate 209 reciprocates left and right with the rotation of the thread, and the straight plate 209 drives the two transmission rods 208 and the movable hinged movable seat 216 to move in the fixed disk 202, so that the bottom plate 212 and the detection head 213 move synchronously under its traction, and the workpiece is located between the two detection heads 213. With the reciprocating rotation of the detection head 213, a comprehensive shooting and detection of the workpiece is realized, thereby improving the comprehensiveness and accuracy of the detection.

[0046] like Figures 1 to 8 As shown, a fixed plate 207 is fixedly connected inside the base 4, a slide groove 1022 is provided inside the fixed plate 207, a straight plate 209 is slidably connected inside the slide groove 1022, a threaded hole is provided inside the straight plate 209, a third guide rod 210 is threadedly connected inside the threaded hole, two symmetrically arranged arcuate slide grooves 1023 are provided inside the fixed plate 202, a movable seat 216 is slidably connected inside the slide groove 1023, a transmission rod 208 is movably hinged between the movable seat 216 and the straight plate 209, a bottom plate 212 is fixedly connected to the top of the movable seat 216, and a detection head 213 is installed on the top of the bottom plate 212.

[0047] like Figures 1 to 8 As shown, the reciprocating feeding mechanism 3 includes a second motor 306, which is installed inside the base 4. The output end of the second motor 306 is fixedly connected to a coaxially arranged output shaft through a coupling. A rotating rod 305 is fixedly sleeved on the outer circumference of the output shaft, and one end of the rotating rod 305 is movably hinged to a hinged rod 304.

[0048] In this embodiment, when the workpiece is transferred to the fixed disk 202, the multi-directional detection mechanism 2 on the fixed disk 202 is started, and the first guide rod 204 rotates to drive the second guide rod 206 to rotate together through the synchronous belt 205, and the second bevel gear 215 fixedly sleeved on the second guide rod 206 also rotates accordingly, and the second bevel gear 215 is meshingly connected with the second bevel gear 215, so the first bevel gear 214 also rotates accordingly and drives the third guide rod 210 to rotate together, and the third guide rod 210 is provided with a reciprocating threaded portion, and a threaded connection is provided on the reciprocating threaded portion. There is a straight plate 209, and the reciprocating thread rotates, and the straight plate 209 moves back and forth. During the movement of the straight plate 209, the two transmission rods 208 are driven to move together. Because the movable seats 216 movably hinged on the two transmission rods 208 are movably arranged inside the fixed plate 202, the movable seats 216, the bottom plate 212 and the detection head 213 will move accordingly. Because the workpiece is located between the two detection heads 213, the two detection heads 213 reciprocate, so as to perform comprehensive shooting and detection of the workpiece, further improving the comprehensiveness of the detection;

[0049] The detection head 213 is the core component of the detection. It adopts high-precision image sensor technology. The detection head 213 captures the image of the workpiece surface through a high-precision lens, and uses machine vision algorithms to process and analyze the image in real time. It can accurately identify scratches, dents and color differences on the workpiece surface. The detection head 213 takes into account the shape of the workpiece and the detection requirements, and adopts a combination of multi-directional movement and reciprocating rotation to ensure comprehensive coverage and detailed detection of the workpiece surface.

[0050] Example 3

[0051] like Figures 1 to 8 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that the base 4 has a guide block 302 fixedly connected to the inside, and a sector gear 303 is rotatably mounted on the guide block 302. The other end of the hinged rod 304 is movably hinged on the sector gear 303. Through the arrangement of the reciprocating material taking mechanism 3 and other structures, after the detection is completed, the second motor 306 is started to drive the rotating rod 305 to rotate, and the hinged rod 304 on the rotating rod 305 moves accordingly, and drives the sector gear 303 hinged thereon to swing back and forth up and down. 3 is meshed with the second gear 310, so each swing of the sector gear 303 will drive the second gear 310 to rotate synchronously, and the round rod 311 nested inside the second gear 310 will also rotate accordingly, and drive the first gear 307 fixedly sleeved thereon to rotate, and the first gear 307 is meshed with the rack 309 at the bottom of the push rod 308, so the push rod 308 reciprocates under the action of the rack 309, and with the movement of the push rod 308, the second suction cup 301 approaches one side of the workpiece and adsorbs the workpiece for unloading, thereby realizing automatic material removal of the workpiece.

[0052] like Figures 1 to 8As shown, a round rod 311 is rotatably installed inside the guide block 302, and a first gear 307 and a second gear 310 are respectively sleeved on the outer circumference of the round rod 311, and the second gear 310 is meshingly connected with the fan gear 303. A slide groove 1023 is opened inside the guide block 302, and a push rod 308 is slidably connected inside the slide groove 1023. A second suction cup 301 is installed on one side of the push rod 308, and a rack 309 is fixedly connected to the bottom of the push rod 308, and the rack 309 is meshingly connected with the first gear 307.

[0053] After the detection is completed, the second motor 306 is started, and the second motor 306 drives the rotating rod 305 to rotate together. The hinged rod 304 movably hinged on the rotating rod 305 moves accordingly and drives the fan-shaped gear 303 movably hinged on the hinged rod 304 to swing back and forth. Because the fan-shaped gear 303 is meshingly connected with the second gear 310, the fan-shaped gear 303 will simultaneously drive the second gear 310 to rotate together when it swings, and the round rod 311 fixedly nested inside the second gear 310 will also rotate accordingly. When the second round rod 311 rotates, it drives the first gear 307 fixedly mounted thereon to rotate together, and the first gear 307 is meshingly connected with the rack 309 fixedly set at the bottom of the push rod 308. Therefore, at this time, the push rod 308 also moves back and forth under the action of the rack 309, and the second suction cup 301 set at one end of the push rod 308 also moves accordingly. When the suction cup moves to one side of the workpiece, it will adsorb the workpiece, and automatic material picking is completed.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. 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 product appearance detection device based on machine vision, characterized in that: The invention comprises a base (4), an intermittent feeding mechanism (1), a multi-directional detection mechanism (2) and a reciprocating feeding mechanism, wherein the intermittent feeding mechanism (1) comprises a support plate (6), one side of the support plate (6) is fixedly connected to one side of the base (4), a first motor (106) is installed on one side of the support plate (6), an output end of the first motor (106) is fixedly connected to a coaxially arranged rotating shaft (107) through a coupling, a straight rod (105) is movably hinged on the outer peripheral surface of the rotating shaft (107), one end of the straight rod (105) is movably hinged to a connecting rod (104), the other end of the connecting rod (104) is movably hinged to a slide plate (109), and a fixed seat (5) is arranged on the top of the base (4).

2. The product appearance detection device based on machine vision according to claim 1, characterized in that: A side plate (101) is fixedly connected to one side of the support plate (6); a slide groove (102) is provided inside the side plate (101); and the slide plate (109) is slidably connected inside the slide groove (102); The slide plate (109) is provided with an inclined groove (111) inside, the side plate (101) is provided with a slide groove (102) inside, the inclined groove (111) and the slide groove (102) are slidably connected to a slide rod (103) inside, one side of the slide rod (103) is fixedly connected to a movable rod (108), and a first suction cup (110) is provided at the bottom of the movable rod (108).

3. The product appearance detection device based on machine vision according to claim 2, characterized in that: The multi-directional detection mechanism (2) comprises a third motor, the third motor is installed inside the base (4), the output end of the third motor is fixedly connected to a coaxially arranged first guide rod (204) through a coupling, and a rotating block (211) is fixedly sleeved on the outer peripheral surface of the first guide rod (204); A second guide rod (206) is rotatably mounted inside the base (4); a cleaning rod (201) is fixedly sleeved on the outer circumference of the second guide rod (206); a straight groove (203) is provided inside the cleaning rod (201); and the rotating block (211) is slidably connected inside the straight groove (203).

4. The product appearance detection device based on machine vision according to claim 3, characterized in that: A second guide rod (206) is rotatably mounted inside the base (4); a synchronous belt (205) is provided between the second guide rod (206) and the first guide rod (204) via a synchronous wheel sleeve; and a first bevel gear (214) is fixedly sleeved on the outer peripheral surface of the second guide rod (206); The top of the base (4) is fixedly connected to a fixed chassis (7), the top of the fixed chassis (7) is fixedly connected to a fixed disk (202), a third guide rod (210) is rotatably mounted inside the fixed disk (202), a second bevel gear (215) is fixedly sleeved on the outer circumference of the third guide rod (210), and the second bevel gear (215) is meshingly connected to the first bevel gear (214).

5. The product appearance detection device based on machine vision according to claim 4, characterized in that: The base (4) is fixedly connected to a fixing plate (207) inside, the fixing plate (207) is provided with two slide grooves (102) inside, the slide grooves (102) are slidably connected to a straight plate (209) inside, the straight plate (209) is provided with a threaded hole inside, and the third guide rod (210) is threadedly connected to the inside of the threaded hole; The interior of the fixed plate (202) is provided with two symmetrically arranged arc-shaped slide grooves (102) 3, the interior of the slide groove (102) 3 is slidably connected with a movable seat (216), a transmission rod (208) is movably hinged between the movable seat (216) and the straight plate (209), the top of the movable seat (216) is fixedly connected with a bottom plate (212), and a detection head (213) is installed on the top of the bottom plate (212).

6. The device for detecting product appearance based on machine vision according to claim 5, characterized in that: The reciprocating material taking mechanism (3) comprises a second motor (306), the second motor (306) is installed inside the base (4), the output end of the second motor (306) is fixedly connected to a coaxially arranged output shaft via a coupling, a rotating rod (305) is fixedly sleeved on the outer peripheral surface of the output shaft, and one end of the rotating rod (305) is movably hinged to a hinge rod (304).

7. The device for detecting product appearance based on machine vision according to claim 6, characterized in that: A guide block (302) is fixedly connected inside the base (4), a sector gear (303) is rotatably mounted on the guide block (302), and the other end of the hinge rod (304) is movably hinged on the sector gear (303).

8. The device for detecting product appearance based on machine vision according to claim 7, characterized in that: A round rod (311) is rotatably installed inside the guide block (302), and a first gear (307) and a second gear (310) are respectively sleeved on the outer circumferential surface of the round rod (311), and the second gear (310) is meshingly connected with the fan-shaped gear (303). A sliding groove (102) three is opened inside the guide block (302), and a push rod (308) is slidably connected inside the sliding groove (102) three. A second suction cup (301) is installed on one side of the push rod (308), and a rack (309) is fixedly connected to the bottom of the push rod (308), and the rack (309) is meshingly connected with the first gear (307).

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