Optical image screening machine

Abstract

The present application relates to the technical field of visual screening detection, in particular to an optical image screening machine, which comprises a rack and a rotating platform arranged on the rack; a material discharging guide mechanism, a visual detection mechanism, a qualified product discharging mechanism and an NG product removing mechanism are sequentially arranged on the outer side of the rotating platform along the rotating direction of the rotating platform; the qualified product discharging mechanism comprises a discharging channel mounted on the rack, a feeding assembly opposite to the entrance of the discharging channel, and a buffer conveying assembly arranged in the discharging channel; the feeding assembly sends the products that pass the detection to the discharging channel; the buffer conveying assembly comprises a deformation receiving part and a deceleration slide part; the products are flexibly received by the deformation receiving part and then output after the speed is controlled by the deceleration slide part. The technical problem that the products are damaged due to collision after the visual high-speed detection is completed and the qualified product rate is reduced is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of visual screening detection, in particular to an optical image screening machine. BACKGROUND

[0002] In industrial production, a large number of precision electronic components are needed, and the pass or fail of these parts is usually detected by using a glass turntable screening machine. The glass turntable screening machine uses a CCD to replace the human eye for measurement and judgment. The captured object is converted into an image signal by a CCD image pickup device, and then sent to an image processing system. The image analysis system extracts target features such as area, number, position or length from these digital signals, and then realizes automatic recognition function according to the preset allowable range and other conditions, and outputs the judgment result to the corresponding operation system for screening.

[0003] A visual detection screening machine disclosed in a Chinese patent No. CN202421421820.3 includes adjacent first and second racks, the first rack is provided with a material sorting mechanism at the material input end, the material sorting mechanism includes first and second material sorting members distributed in front of and behind the material walking direction, and the first and second material sorting members are respectively provided with material blocking structures located on both sides of the material walking path; the first rack is provided with a return hopper outside the first material sorting member, the return hopper is provided with an upper opening adjacent to the outer edge of the turntable mechanism, and the horizontal profile of the upper opening covers the area between the material input end and the second material sorting member.

[0004] The visual detection screening machine disclosed in the patent has the problem that after completing the detection of the material product, the product output process is blown by high-pressure gas, which is easy to cause product bump damage, resulting in an increase in the rate of defective products and inaccuracy of the screening machine. SUMMARY

[0005] In view of the above problems, the present application provides an optical image screening machine, which is provided with a material discharging guide mechanism, a visual detection mechanism, a qualified product discharging mechanism and an NG product removing mechanism in sequence on the outside of the rotating platform and along the rotating direction of the rotating platform; the qualified product discharging mechanism includes a discharging channel mounted on the rack, a feeding assembly opposite to the entrance of the discharging channel, and a buffer conveying assembly arranged in the discharging channel, the feeding assembly sends the detected qualified products to the discharging channel, and the buffer conveying assembly includes a deformation receiving part and a deceleration slide part, the products are flexibly received by the deformation receiving part and then output after speed control by the deceleration slide part. The technical problem of product bump damage during the product offline after the visual high-speed detection is solved, which reduces the qualified rate of finished products.

[0006] To achieve the above purpose, the present application provides the following technical scheme:

[0007] An optical image screening machine comprises a frame and a rotating platform arranged on the frame:

[0008] A material discharging guide mechanism, a visual detection mechanism, a qualified product discharging mechanism and a NG product removing mechanism are arranged in sequence on the outer side of the rotating platform along the rotating direction of the rotating platform;

[0009] The rotating platform carries the products to be detected to move in a curve around the center, the material discharging guide mechanism guides and arranges the products entering the rotating platform in order, the visual detection mechanism shoots the surface of the products and compares the captured image with the standard image built in the system, and the NG product removing mechanism removes the products with the comparison result as NG;

[0010] The qualified product discharging mechanism comprises a discharging channel mounted on the frame, a feeding assembly opposite to the entrance of the discharging channel, and a buffer conveying assembly arranged in the discharging channel, the feeding assembly feeds the products detected as qualified to the discharging channel, and the buffer conveying assembly comprises a deformation receiving part and a deceleration slide part, the products are flexibly received by the deformation receiving part and then output after speed control by the deceleration slide part.

[0011] As an improvement, two groups of the material discharging guide mechanisms are arranged, and the material discharging guide mechanism comprises a support and a guide strip mounted on the support and suspended above the rotating platform;

[0012] The guide strips of the two groups of the material discharging guide mechanisms form a horn-shaped guide area, so that the products arranged in front and back move one by one.

[0013] As an improvement, the angle of the guide strip relative to the support is adjustable, and the products contact the guide strip to decelerate and adjust the posture and then leave one by one.

[0014] As an improvement, the visual detection mechanism comprises a material detection assembly, a bottom visual detection assembly, a top visual detection assembly and a light source assembly;

[0015] The material detection assembly is arranged to be photoelectrically sensitive, and when the products driven by the rotating platform pass through the material detection assembly, the material detection assembly transmits an electric signal, and the bottom visual detection assembly and the top visual detection assembly are shot at the corresponding time in combination with the known speed of the rotating platform.

[0016] The light source assembly uniformly supplements light to all the outer surfaces of the products.

[0017] As an improvement, the area of the rotating platform for carrying the products is arranged as a transparent body, and the bottom visual detection assembly shoots the bottom surface of the products from below the rotating platform.

[0018] The top visual detection assembly comprises a plurality of visual detection heads, which are arranged separately but have converging light sensing lines at the same point, and the product is shot by the top visual detection assembly except for the bottom surface.

[0019] As an improvement, the visual detection heads are arranged in a circle in the same plane, and the angle between any two of the visual detection heads is 120°, and the angle between the light sensing line of the visual detection head and the rotating platform is 35°-60°.

[0020] As an improvement, the deformation receiving part comprises a flexible curtain and a pulling plate, one end of the flexible curtain is rigidly connected to the inner wall of the discharge channel, the pulling plate is arranged at the other end of the flexible curtain, the pulling plate is close to the inner wall of the discharge channel to form a receiving spoon shape of the flexible curtain, and the pulling plate is away from the inner wall of the discharge channel to form an inclined plane shape of the flexible curtain to make the product slide down.

[0021] As an improvement, the deceleration slide part comprises a discharge slide plate, a driving component and a swing connecting rod, the lower end of the discharge slide plate is connected to the inner wall of the discharge channel through a pin shaft, the driving component drives the discharge slide plate to change the slope, so that the product on the discharge slide plate changes from an accelerated state to a uniform speed state, the middle part of the swing connecting rod is connected to the inner wall of the discharge channel through a pin shaft, and the two ends of the swing connecting rod are connected to the discharge slide plate and the pulling plate respectively, so that the state of the flexible curtain is changed when the slope of the discharge slide plate is changed.

[0022] As an improvement, the upper end of the discharge slide plate is provided with a stop area, when the discharge slide plate increases the slope to receive the product, the stop area stops the sliding product, and the surface of the stop area can be covered with a flexible panel to provide flexible buffering for the product.

[0023] As an improvement, the feeding assembly is provided as a pneumatic blowing element, and the feeding assembly intermittently obtains positive pressure gas to blow the detected product into the discharge channel.

[0024] As an improvement, the driving component is provided as an electric rotating element, the rotating angle of which can be fed back in real time, and the rotating speed of which is variable in real time to control the uniform falling of the product sliding on the discharge slide plate.

[0025] As an improvement, the driving component is provided as a capsule type channel structure and is attached to the lower surface of the discharge slide plate, one end of the driving component is communicated with a positive pressure gas source, the other end of the driving component is communicated with the feeding assembly, and the driving component is inflated by gas pumping to increase the slope of the discharge slide plate, and at the same time, the deformation receiving part is changed to an inclined plane to make the product slide down.

[0026] The driving part is compressed by the weight of the discharge slide plate when the gas pumping stops, at which time the slope of the discharge slide plate is also reduced, and the product falls at a constant speed.

[0027] As an improvement, an auxiliary air bag is also included, which is arranged below the pull plate and is connected to the air source and the feeding assembly. The auxiliary air bag is compressed when the pull plate is lowered to increase the air flow of the feeding assembly.

[0028] The beneficial effects of the present application are:

[0029] (1) The flexible curtain structure with a deformation receiving part is arranged to gently receive the product sent off the rotating platform at a high speed by the feeding assembly, avoiding collision between the product and the rigid parts of the discharge channel, and ensuring the integrity of the product;

[0030] (2) The discharge slide plate with variable slope is arranged to change the slope of the discharge slide plate according to the sliding speed characteristics of different products, so that the final speed of the product when sliding is controllable at a constant speed, and the discharge work is completed in a gentle falling state;

[0031] (3) The driving part is arranged as a bag-shaped channel structure, so that the pneumatic blowing element is lifted to receive the finished product at the moment of blowing, and then the bag-shaped channel structure is compressed by the discharge slide plate. Firstly, the remaining gas can be used to blow to the rotating platform for dust cleaning, and secondly, the slope of the discharge slide plate can be slowly flattened, which is beneficial to limiting the increasing state of the movement speed of the product on the discharge slide plate;

[0032] (4) The auxiliary air bag structure is arranged to link the blowing process of the feeding assembly and the deformation process of the flexible curtain structure, which is beneficial to the receiving of the product and prevents discharge errors due to time differences.

[0033] In summary, the present application has the advantages of protecting product yield, improving efficiency, and stable work, and is especially suitable for the field of visual inspection technology. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0035] Figure 2 is a schematic diagram of the present application from the top;

[0036] Figure 3 is a schematic diagram of the visual inspection mechanism of the present application;

[0037] Figure 4 is a schematic diagram of the qualified product discharge mechanism of the present application;

[0038] Figure 5Figure 2 is a schematic view of a product discharge mechanism according to an embodiment of the present application;

[0039] Figure 6 Figure 3 is a schematic view of a buffer conveying assembly according to an embodiment of the present application;

[0040] Figure 7 Figure 4 is a schematic view of a buffer conveying assembly according to an embodiment of the present application;

[0041] Figure 8 Figure 5 is a schematic view of an embodiment 2 of the present application;

[0042] Figure 9 Figure 6 is a schematic view of an embodiment 2 of the present application;

[0043] Figure 10 Figure 7 is a schematic view of an embodiment 2 of the present application;

[0044] Figure 11 Figure 8 is a schematic view of a gas pumping according to an embodiment of the present application;

[0045] Figure 12 Figure 9 is a partial enlarged view of Figure 11

[0046] Figure 13 Figure 10 is a schematic view of an embodiment 3 of the present application;

[0047] Figure 14 Figure 11 is a schematic view of an embodiment 3 of the present application;

[0048] Figure 15 Figure 12 is a schematic view of a product falling state according to an embodiment of the present application;

[0049] Figure 16 Figure 13 is a schematic view of a product falling state according to an embodiment of the present application;

[0050] Figure 17 Figure 14 is a schematic view of a product falling state according to an embodiment of the present application;

[0051] Figure 18 Figure 15 is a schematic view of a product falling state according to an embodiment of the present application;

[0052] Figure 19 Figure 16 is a schematic view of a movable baffle hinged state according to an embodiment of the present application. DETAILED DESCRIPTION

[0053] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0054] ​In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0055] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] Example 1:

[0057] like Figures 1 to 3 As shown, an optical image sorting machine includes a frame 1 and a rotating platform 2 disposed on the frame 1. A discharge guiding mechanism 3, a visual inspection mechanism 4, a qualified product discharge mechanism 5, and an NG product rejection mechanism 6 are sequentially disposed on the outside of the rotating platform 2 and along the rotation direction of the rotating platform 2.

[0058] The rotating platform 2 carries the product 7 to be inspected and moves in a curved motion around the center. The discharge and guiding mechanism 3 guides and arranges the product 7 entering the rotating platform 2 in an orderly manner. The visual inspection mechanism 4 takes pictures of the surface of the product 7 and compares the captured image with the standard image built into the system. The NG product rejection mechanism 6 rejects the product 7 that is NG according to the comparison result.

[0059] The qualified product discharge mechanism 5 includes: a discharge channel 51 installed on the frame 1, a feeding component 52 facing the inlet of the discharge channel 51, and a buffer conveying component 53 disposed in the discharge channel 51. The feeding component 52 sends the qualified product 7 to the discharge channel 51. The buffer conveying component 53 includes a deformation receiving part 531 and a deceleration slide part 532. The product 7 is flexibly received by the deformation receiving part 531 and then output after the speed is controlled by the deceleration slide part 532.

[0060] It should be noted that the product 7 needs to be separated from the detection mechanism after being detected. The feeding assembly 52 provides a large power to the product 7 so that the product 7 instantaneously obtains a high speed into the discharging channel 51. At this time, the buffer conveying assembly 53 completes the first speed reduction and buffering through the deformation receiving part 531, and waits for the power trigger to make the deformation receiving part 531 become a state allowing the product 7 to smoothly slide down. The speed control of the product 7 falling from the deformation receiving part 531 is performed by the deceleration slide part 532. The specific control method is to slowly reduce the sliding slope of the deceleration slide part 532 according to the gravity acceleration characteristics of the product 7, so as to achieve the effect of speed reduction.

[0061] As a preferred embodiment, the discharging guide mechanism 3 is provided with two groups, and the discharging guide mechanism 3 comprises a support 31 and a guide strip 32 mounted on the support 31 and suspended above the rotating platform 2.

[0062] The guide strips 32 in the two groups of discharging guide mechanisms 3 form a horn-shaped guide area, so that the products 7 arranged in front and back move one by one.

[0063] It should be noted that the guide strips 32 form a horn-shaped guide area and are arranged in front and back, which facilitates the path convergence of the product 7.

[0064] As a preferred embodiment, the guide strip 32 is angle-adjustable relative to the support 31. The product 7 contacts the guide strip 32 to slow down and adjust the posture, and then leaves one by one.

[0065] It should be noted that the guide strip 32 is angle-adjustable relative to the support 31. According to different products detected by the equipment, the guide strip 32 can be adjusted to a state that the product 7 can be output at equal intervals in front and back.

[0066] As a preferred embodiment, the visual detection mechanism 4 comprises a incoming detection assembly 41, a bottom visual detection assembly 42, a top visual detection assembly 43, and a light source assembly 44.

[0067] The incoming detection assembly 41 is arranged to be photoelectrically sensitive. When the product 7 driven by the rotating platform 2 passes through the incoming detection assembly 41, the incoming detection assembly 41 detects a material transmission electrical signal. In combination with the known speed of the rotating platform 2, the bottom visual detection assembly 42 and the top visual detection assembly 43 are photographed at the corresponding time.

[0068] The light source assembly 44 uniformly supplements light to all outer surfaces of the product 7.

[0069] As a preferred embodiment, the area of the rotating platform 2 for carrying the product 7 is arranged as a transparent body. The bottom visual detection assembly 42 photographs the bottom surface of the product 7 from below the rotating platform 2.

[0070] The top visual detection assembly 43 comprises a plurality of visual detection heads 431, which are arranged separately but have converging light sensing lines at the same point. The product 7 is photographed by the top visual detection assembly 43 except for the bottom surface.

[0071] As a preferred embodiment, the visual detection heads 431 are arranged in a circle in the same plane, and the included angle a between any two of the visual detection heads 431 is 120°. The included angle β between the light sensing line of the visual detection head 431 and the rotating platform 2 is 35°-60°.

[0072] It should be noted that the visual detection heads 431 are arranged in a circle in the same plane, so that the visual range of the visual detection heads can cover the periphery of the product 7. The included angle between the light sensing line of the visual detection head 431 and the rotating platform 2 is adjustable, which facilitates the capture of the top surface features of the product 7.

[0073] As shown in Figures 4 to 7 As a preferred embodiment, the deformed receiving part 531 comprises a flexible curtain 5311 and a pull plate 5312. One end of the flexible curtain 5311 is rigidly connected to the inner wall of the discharge channel 51. The pull plate 5312 is arranged at the other end of the flexible curtain 5311. When the pull plate 5312 is close to the inner wall of the discharge channel 51, the flexible curtain 5311 forms a spoon-shaped receiving part that can hold the product 7. When the pull plate 5312 is away from the inner wall of the discharge channel 51, the flexible curtain 5311 forms an inclined plane, so that the product 7 slides down.

[0074] It should be noted that the surface of the flexible curtain 5311 is attached with a flexible fabric, which is used to protect the surface of the product 7, such as a precision electronic product, to avoid scratches and bumps. When the flexible curtain 5311 is pulled straight by the pull force of the pull plate 5312, it forms a downward slope. The surface material of the flexible curtain 5311 is smooth, which facilitates the sliding of the product 7.

[0075] As a preferred embodiment, the deceleration slide part 532 comprises a discharge slide plate 5321, a driving component 5322, and a swing connecting rod 5323. The lower end of the discharge slide plate 5321 is connected to the inner wall of the discharge channel 51 through a pin shaft. The driving component 5322 drives the discharge slide plate 5321 to change the slope, so that the product 7 on the discharge slide plate 5321 changes from an accelerated state to a uniform speed state. The middle part of the swing connecting rod 5323 is connected to the inner wall of the discharge channel 51 through a pin shaft, and its two ends are connected to the discharge slide plate 5321 and the pull plate 5312, respectively. Therefore, the state of the flexible curtain 5311 changes when the slope of the discharge slide plate 5321 changes.

[0076] It should be noted that, through the weight of product 7 and gravity acceleration calculation, the timing of changing the slope of the discharge slide 5321 can be different according to the product, so as to achieve the final uniform and non-high speed descending state of the product.

[0077] As a preferred embodiment, the upper end of the discharge slide 5321 is provided with a stop area 53211, when the discharge slide 5321 increases the slope for receiving the product 7, the stop area 53211 stops the sliding product 7, and the surface of the stop area 53211 can be covered with a flexible panel to provide flexible buffering for the product 7.

[0078] As a preferred embodiment, the feeding assembly 52 is set as a pneumatic blowing element, which intermittently obtains positive pressure gas to blow into the product 7 detected to enter the discharge channel 51.

[0079] As a preferred embodiment, the driving component 5322 is set as an electric rotating element, the rotating angle of which can be real-time feedback, and the rotating speed of which is real-time variable, to control the uniform falling of the product 7 sliding on the discharge slide 5321.

[0080] Embodiment 2:

[0081] As shown in Figures 8 to 10 , as a preferred embodiment, the driving component 5322 is set as a capsule type channel structure and its outer side is attached to the lower surface of the discharge slide 5321, one end of the driving component 5322 is communicated with a positive pressure gas source, the other end of the driving component 5322 is communicated with the feeding assembly 52, the driving component 5322 is inflated by gas pumping to increase the slope of the discharge slide 5321, and at the same time, the deformation receiving part 531 is changed to an inclined plane to make the product 7 slide down;

[0082] When the driving component 5322 stops gas pumping, it is compressed by the self-weight of the discharge slide 5321, at this time, the slope of the discharge slide 5321 is also reduced, and the product 7 falls uniformly.

[0083] It should be noted that, as shown in Figure 11 , Figure 12 , the power of gas pumping can adopt a positive pressure gas pump 8, which is connected to one end of the driving component 5322 through a pipeline, and gas is then led to the feeding assembly 52 through the other end of the driving component 5322 through a pipeline.

[0084] It should also be noted that the driving component 5322 is set as a capsule type channel structure, which can make the angle change of the discharge slide 5321 more flexible, similar to the pneumatic damping state, and the protection ability for the product 7 is enhanced.

[0085] Embodiment 3:

[0086] As Figure 13 , Figure 14 shown, as a preferred embodiment, further comprising an auxiliary air bag 5313, which is arranged below the pull plate 5312 and is connected with the air source and the feeding assembly 52, and the pull plate 5312 presses the auxiliary air bag 5313 when it is lowered to increase the air flow of the feeding assembly 52.

[0087] It should be noted that the auxiliary air bag 5313 can realize the synchronization of the blowing action of the product 7 on the rotating platform 2 and the lifting action of the discharge slide plate 5321, so that when one product 7 on the rotating platform 2 is sent into the deformation receiving part 531, the original one product 7 on the deformation receiving part 531 is sent into the deceleration slide part 532, achieving strict one-by-one output.

[0088] Example 4:

[0089] As Figures 15 to 19 shown, as a preferred embodiment, a plurality of flow interception assemblies 9 are arranged above the discharge slide plate 5321, the flow interception assembly 9 comprises a flow interception base plate 91 and a movable baffle 92, the flow interception base plate 91 is fixedly connected to the inner wall of the discharge channel 51, and the movable baffle 92 is slidingly connected or hingedly connected to the flow interception base plate 91, the bottom of the movable baffle 92 can abut against the discharge slide plate 5321 and be pushed by the discharge slide plate 5321.

[0090] It should be noted that near the upper end of the discharge slide plate 5321, only the flow interception base plate 91 is arranged, and the movable baffle 92 is not arranged, when the discharge slide plate 5321 swings upward to the angle at which the product 7 falls, the product 7 falls into the supporting area between the discharge slide plate 5321 and the flow interception base plate 91, and as the discharge slide plate 5321 swings downward, the gap between the flow interception base plate 91 and the discharge slide plate 5321 is widened, the product 7 slides downward, and the movable baffle 92 connected to the second flow interception base plate 91 still abuts against the discharge slide plate 5321 and forms a supporting area, and as the discharge slide plate 5321 continues to swing downward, the gap between the movable baffle 92 and the discharge slide plate 5321 is widened, and the product 7 slides downward again, and the third flow interception assembly 9 completes similar work as the second flow interception assembly 9, so that the sliding speed of the product 7 is segmented and controllable, further protecting the product 7 from being bumped.

[0091] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An optical image screening machine, comprising a rack (1) and a rotating platform (2) arranged on the rack (1), characterized in that: a material discharging guide mechanism (3), a visual detection mechanism (4), a qualified product discharging mechanism (5) and a NG product removing mechanism (6) are arranged in sequence on the outer side of the rotating platform (2) along the rotating direction of the rotating platform (2); the rotating platform (2) carries the product (7) to be detected to make a curve motion around the center, the material discharging guide mechanism (3) guides and arranges the product (7) entering the rotating platform (2) in order, the visual detection mechanism (4) shoots the surface of the product (7) and compares the captured image with the standard image built in the system, and the NG product removing mechanism (6) removes the product (7) with the comparison result as NG; the qualified product discharging mechanism (5) comprises a discharging channel (51) mounted on the rack (1), a feeding assembly (52) opposite to the entrance of the discharging channel (51), and a buffer conveying assembly (53) arranged in the discharging channel (51), the feeding assembly (52) sends the product (7) passing the detection to the discharging channel (51), and the buffer conveying assembly (53) comprises a deformation receiving part (531) and a deceleration slide part (532), the product (7) is flexibly received by the deformation receiving part (531) and then outputted after the speed is controlled by the deceleration slide part (532); the deformation receiving part (531) comprises a flexible curtain (5311) and a pull plate (5312), one end of the flexible curtain (5311) is rigidly connected with the inner wall of the discharging channel (51), the pull plate (5312) is arranged at the other end of the flexible curtain (5311), the pull plate (5312) is close to the inner wall of the discharging channel (51) to make the flexible curtain (5311) form a receiving spoon shape capable of holding the product (7), and the pull plate (5312) is away from the inner wall of the discharging channel (51) to make the flexible curtain (5311) form an inclined plane shape to make the product (7) slide off; the deceleration slide part (532) comprises a discharging slide plate (5321), a driving part (5322) and a swing connecting rod (5323), the lower end of the discharging slide plate (5321) is connected with the inner wall of the discharging channel (51) through a pin shaft, the driving part (5322) drives the discharging slide plate (5321) to change the slope, so that the product (7) on the discharging slide plate (5321) changes from the accelerated state to the uniform speed state, the middle part of the swing connecting rod (5323) is connected with the inner wall of the discharging channel (51) through a pin shaft, and the two ends thereof are connected with the discharging slide plate (5321) and the pull plate (5312) respectively, so that the state of the flexible curtain (5311) is changed while the slope of the discharging slide plate (5321) is changed.

2. The optical image screening machine according to claim 1, characterized in that: ​ ​ ​ The discharge guide mechanism (3) is provided with two groups, the discharge guide mechanism (3) includes a support one (31) and a guide bar (32) installed on the support one (31) and suspended above the rotating platform (2); The guide bars (32) in the two groups of the discharge guide mechanism (3) form a horn-shaped guide area, so that the products (7) are arranged in front and back and move one by one; The guide bar (32) is angle-adjustable relative to the support one (31), the product (7) contacts the guide bar (32) and slows down, and then leaves one by one after the posture is adjusted.

3. The optical image screening machine according to claim 1, characterized in that: The visual detection mechanism (4) includes a incoming detection assembly (41), a bottom visual detection assembly (42), a top visual detection assembly (43) and a light source assembly (44); The incoming detection assembly (41) is provided with photoelectric induction, and when the product (7) driven by the rotating platform (2) passes through the incoming detection assembly (41), a material transmission electrical signal is detected, and the bottom visual detection assembly (42) and the top visual detection assembly (43) are photographed at the corresponding time in combination with the known speed of the rotating platform (2); The light source assembly (44) uniformly supplements light to all outer surfaces of the product (7).

4. The optical image screening machine according to claim 1, characterized in that: The upper end of the discharge slide plate (5321) is provided with a stop area (53211), and when the discharge slide plate (5321) increases the slope for receiving the product (7), the stop area (53211) stops the product (7) sliding down, and the surface of the stop area (53211) can be provided with a flexible panel, so that the product (7) is flexibly buffered.

5. The optical image screening machine according to claim 1, characterized in that: The feeding assembly (52) is provided with a pneumatic blowing element, and the feeding assembly (52) intermittently obtains positive pressure gas to blow the product (7) after detection into the discharge channel (51).

6. The optical image screening machine according to claim 1, characterized in that: The driving component (5322) is provided with an electric rotating element, the rotating angle of which can be fed back in real time, and the rotating speed of which is variable in real time, so as to control the product (7) sliding on the discharge slide plate (5321) to fall at a constant speed.

7. The optical image screening machine according to claim 6, characterized in that: The driving component (5322) is provided with a capsule type channel structure and is attached to the lower surface of the discharge slide plate (5321) on the outside, one end of the driving component (5322) is communicated with a positive pressure gas source, the other end of the driving component (5322) is communicated with the feeding assembly (52), and the driving component (5322) is inflated by gas pumping to increase the slope of the discharge slide plate (5321), and at the same time, the deformation receiving part (531) is changed into an inclined plane to make the product (7) slide down. The driving part (5322) is pressed and reduced by the weight of the discharge slide plate (5321) when gas pumping stops, at this time the slope of the discharge slide plate (5321) is also reduced, and the product (7) falls at a constant speed.

8. The optical image screening machine according to claim 6, characterized in that: Further comprising an auxiliary air bag (5313), the auxiliary air bag (5313) is arranged below the pull plate (5312) and is communicated with the air source and the feeding assembly (52), and the pull plate (5312) is pressed when descending to press the auxiliary air bag (5313) to increase the air flow of the feeding assembly (52).

Images