Combined multi-camera vision tablet counting machine

Abstract

The utility model discloses a combined type multi-camera vision grain counting machine which comprises a feeding hopper, a plurality of first-stage array disc grooves are formed in the top of the first-stage linear vibration disc and used for receiving materials output by the feeding hopper and conveying the materials rightwards; a plurality of second-stage array disc grooves are formed in the top of the second-stage line vibration disc, and the middle of the bottom of each second-stage array disc groove protrudes upwards to form an arch-shaped structure or an inverted-V-shaped structure, or the whole bottom of each second-stage array disc groove is of a W The slideway piece is provided with a plurality of inclined slideways; a scanning gap is formed between the upper portion of the collecting hopper and the sliding way piece, the collecting hopper is used for correspondingly receiving materials sliding out of the inclined sliding way, an upper flashboard and a lower flashboard are arranged in each discharging channel, and a discharging port is formed in the lower end of the collecting hopper. The lens end of the CCD visual system faces the scanning gap and corresponds to the backlight light bar. With the adoption of the technical scheme, the overlapped materials are in an inclined state after entering the second-stage vibration disc groove, and are easily dispersed in the conveying process, so that the grain counting error caused by material overlapping can be reduced, and the grain counting precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of material counting technology, and in particular to a combined multi-camera vision counting machine. Background Technology

[0002] A pill counter is a machine used in industries such as pharmaceuticals, hospitals, and food to count capsules, tablets, granules, and other medicines or food products.

[0003] While existing grain counting machines can meet certain usage needs, they still have some structural shortcomings. For example, Chinese patent CN115432247A discloses a combined multi-channel vision grain counting machine and counting method. The bottom of the upper array plate groove of the secondary vibrating plate in this grain counting machine is a planar structure, which makes it difficult to disperse overlapping materials during the conveying process, easily causing counting errors. In addition, this grain counting machine uses a single CCD camera for sampling, resulting in pixel dispersion, low counting accuracy, and also easily causing counting errors. Utility Model Content

[0004] In order to overcome the existing technical defects, the purpose of this utility model is to provide a combined multi-camera vision counting machine to solve the above-mentioned technical problems.

[0005] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0006] According to one aspect of this utility model, a combined multi-camera visual grain counting machine is designed, comprising:

[0007] The feeding hopper is located on top of the machine frame;

[0008] The first-level linear vibrating plate has several first-level array slots on the top, and the left ends of the several first-level array slots are located below the discharge port of the feeding hopper, which is used to receive the material output from the feeding hopper and convey it to the right.

[0009] The secondary linear vibrating plate has several secondary array slots on the top. The left ends of the several secondary array slots are respectively located below the discharge ends of several primary array slots, which are used to receive the material output from the primary array slots and convey it to the right. The bottom of the secondary array slots protrudes upward in the middle to form an arched structure or a Λ structure, or the bottom is W-shaped.

[0010] The slide rail component is equipped with several inclined slide rails, and the left ends of the several inclined slide rails are respectively located below the discharge ends of several secondary array plate slots to receive the materials output from the secondary array plate slots.

[0011] The upper part of the hopper forms a scanning gap with the slide rail component. Several material discharge channels are provided on the upper part of the hopper, which correspond one-to-one with several inclined slide rails to receive the material discharged from the inclined slide rails. Each material discharge channel is provided with an upper gate and a lower gate. The upper gate and the lower gate are connected to a first drive unit and a second drive unit to drive them to swing and control the opening or closing of the material discharge channel. The lower end of the hopper is provided with a discharge port.

[0012] A CCD vision system is installed inside the frame, with the lens of the CCD vision system facing the scanning slit and corresponding to the backlight strip, for identifying materials that slip through the scanning slit;

[0013] The control device is electrically connected to the first drive unit, the second drive unit, and the CCD vision system.

[0014] By adopting the above technical solution, by setting the bottom center of the secondary vibrating plate trough to an upward-protruding arched structure or Λ structure, or the bottom as a W-shaped structure, when the overlapping materials enter the secondary vibrating plate trough, they are in an inclined state and are easy to disperse during the conveying process. This can reduce the counting error caused by the overlap of materials and improve the counting accuracy.

[0015] To better address the aforementioned technical deficiencies, this utility model also offers a superior technical solution:

[0016] In some embodiments, the CCD vision system is provided in two parts: one CCD vision system's lens is used to scan the first half of the longitudinal width of the scanning slit, and the other CCD vision system's lens is used to scan the second half of the longitudinal width of the scanning slit. Using a dual CCD vision system for narrow-amplitude sampling concentrates pixels, reducing image distortion and further improving grain counting accuracy.

[0017] In some embodiments, a material collecting gate is provided inside the lower end of the material collecting hopper, and the material collecting gate is connected to a third drive unit that drives it to swing to control the opening or closing of the discharge port. The third drive unit is electrically connected to the control device.

[0018] In some embodiments, the hopper includes a hopper body, a sealing plate fixedly connected to the hopper body, and a plurality of channel components vertically disposed within the hopper body. The channel components include a first plate of integral structure, a second plate and a third plate disposed on the left side of the first plate, an upper plate and a lower plate. The second plate is disposed above the third plate. The second plate, the third plate and the first plate form the material discharge channel. The front side of the upper plate is offset from the front side of the lower plate. The left end of the upper gate is located on the left side of the second plate and is fixedly connected to the drive shaft of the first drive unit. The left end of the lower gate is located on the left side of the third plate and is fixedly connected to the drive shaft of the second drive unit.

[0019] In some implementations, the first drive unit and the second drive unit are servo motors or stepper motors.

[0020] In some implementations, the third drive unit is a servo motor or a stepper motor.

[0021] In some embodiments, when the upper gate is in the closed state, it contacts the bottom surface of the upper plate body; when the lower gate is in the closed state, it contacts the bottom surface of the lower plate body. The channel component has an elastic bending plate at the top and a snap-fit ​​buckle at the bottom. The snap-fit ​​buckle is inserted into a hole on the hopper body. The elastic bending plate is elastically pressed against the bending inclined plate at the top of the hopper body. The sealing plate is a transparent acrylic sheet. The upper gate, when closed, contacts the bottom surface of the upper plate body, and the lower gate, when closed, contacts the bottom surface of the lower plate body. This prevents oral non-woven packaging materials from getting stuck in the gaps between the upper gate and the upper plate body, and between the lower gate and the lower plate body. If the upper and lower gates are in the closed state and located in front of the upper and lower plates, material may get stuck in the gaps between them.

[0022] In some embodiments, a baffle is provided inside the lower end of the collecting hopper. A front collecting chamber is formed between the front side of the baffle and the collecting hopper, and a rear collecting chamber is formed between the rear side of the baffle and the collecting hopper. A portion of the material from several discharge channels flows into the front collecting chamber, and another portion flows into the rear collecting chamber. Collecting gates are respectively provided on the front and rear sides of the baffle, and each of the two collecting gates is connected to a third drive unit. When outputting small quantities of material, the quantitative material received in the front collecting chamber and the quantitative material received in the rear collecting chamber can be output separately, achieving separate output of two sets of materials and improving the counting and output efficiency. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a combined multi-camera vision counting machine according to one embodiment of this utility model;

[0024] Figure 2 This is a schematic diagram of the right-side structure of a combined multi-camera vision counting machine.

[0025] Figure 3 for Figure 2 An enlarged view of position A in the middle;

[0026] Figure 4 A schematic diagram of the upper bucket of a combined multi-camera vision grain counter;

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the material collection hopper;

[0028] Figure 6 for Figure 5A structural diagram from another perspective;

[0029] Figure label:

[0030] 1. Frame; 2. Feeding hopper; 3. Primary vibratory feeder; 31. Primary array slot; 4. Secondary vibratory feeder; 41. Secondary array slot; 42. W-shaped structure; 5. Slide rail; 51. Inclined slide rail; 6. Collecting hopper; 60. Discharge channel; 61. Hopper body; 611. Bending inclined plate; 62. Sealing plate; 63. Channel component; 631. First plate; 632. Second plate; 633. Third plate; 634. Upper plate; 635. Lower plate; 636. Flexible bending plate; 637. Plug-in buckle; 64. Collecting gate; 65. Partition; 651. Front collecting chamber; 652. Rear collecting chamber; 7. CCD vision system; 71. Backlight strip; 8. Upper gate; 9. Lower gate; 10. Control device. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, unless otherwise explicitly defined, terms such as setting, installing, connecting, and fixing should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] refer to Figures 1 to 6 As shown, the present invention provides a combined multi-camera vision counting machine, comprising: a frame 1, a feeding hopper 2, a primary vibrating plate 3, a secondary vibrating plate 4, a slide rail 5, a collecting hopper 6, a CCD vision system 7, and a control device 10.

[0035] The feeding hopper 2 is fixed to the top left end of the frame 1. The feeding hopper 2 is used to store materials for counting. The bottom or right side of the lower end of the feeding hopper 2 has a discharge port.

[0036] The primary linear vibrating plate 3 is fixed on the top of the frame 1 and located on the right side of the feeding hopper 2. Several primary array plate slots 31 are provided on the top of the primary linear vibrating plate 3. The left end of the several primary array plate slots 31 is located below the discharge port of the feeding hopper 2. The primary array plate slots 31 are used to receive the material output from the feeding hopper 2 and convey it to the right.

[0037] The secondary vibratory feeder 4 is fixed on the top of the frame 1 and located to the right of the primary vibratory feeder 3. The top of the secondary vibratory feeder 4 is provided with several secondary array slots 41. The left ends of the several secondary array slots 41 are respectively located below the discharge ends of several primary array slots 31. The several secondary array slots 41 are used to receive the materials output from the several primary array slots 31 and convey them to the right. The bottom center of the secondary array slot 41 protrudes upward in an arched structure or a Λ structure, or the bottom is W-shaped 42. In this embodiment, the bottom of the secondary array slot 41 is preferably W-shaped 42.

[0038] The slide rail 5 is located on the right side of the secondary linear vibrating plate 4 and is fixed to the frame 1. The slide rail 5 is inclined and has several inclined slide rails 51. The left ends of the several inclined slide rails 51 are respectively located below the discharge ends of several secondary array plate slots 41. The inclined slide rails 51 are used to receive the materials output by several secondary array plate slots 41 respectively.

[0039] The collecting hopper 6 is located on the right side of the frame 1 and is fixedly connected to the frame 1. The upper part of the collecting hopper 6 and the slide 5 maintain a gap to form a scanning gap. The upper part of the collecting hopper 6 is provided with several material dropping channels 60. The material dropping channels 60 correspond one-to-one with several inclined slides 51. The material dropping channels 60 are used to receive the material that slides out of the inclined slides 51 one-to-one.

[0040] Each material discharge channel 60 is equipped with an upper gate 8 and a lower gate 9. The upper gate 8 is connected to a first drive unit that drives it to swing to control the opening or closing of the material discharge channel 60. The lower gate 9 is connected to a second drive unit that drives it to swing to control the opening or closing of the material discharge channel 60.

[0041] The hopper 6 includes a hopper body 61, a sealing plate 62 fixedly connected to the hopper body 61, and several channel components 63 vertically disposed within the hopper body. The sealing plate 62 is a transparent acrylic plate, allowing observation of the material inside the hopper 6. The channel components 63 include a first plate 631, a second plate 632 and a third plate 633 disposed to the left of the first plate 631, an upper plate 634, and a lower plate 635. The first plate 631, the second plate 632 and the third plate 633 disposed to the left of the first plate 631, the upper plate 634, and the lower plate 635 are an integral structure. The second plate 632 is disposed above the third plate 633. The material discharge channel 60 is formed between the second plate 632, the third plate 633 and the first plate 631. The upper plate 634 and the lower plate 635 are arranged one above the other, and the front side of the upper plate 634 is offset from the front side of the lower plate 635, that is, the front side of the upper plate 634 is located in front of the front side of the lower plate 635. The left end of the upper gate 8 is located to the left of the second plate 632 and is fixedly connected to the drive shaft of the first drive unit. The left end of the lower gate 9 is located to the left of the third plate 633 and is fixedly connected to the drive shaft of the second drive unit. The first drive unit and the second drive unit are fixedly connected to the left side of the bucket body 61.

[0042] The channel component 63 has an upper elastic bending plate 636 and a lower plug-in buckle 637. The elastic bending plate 636 is located at the bottom of the upper plate 634, and the plug-in buckle 637 is located on the lower left side of the first plate 631. The plug-in buckle 637 is inserted into a hole on the bucket body 61, and the elastic bending plate 636 is elastically pressed against the bending inclined plate 611 on the upper part of the bucket body 61. The channel component 63 can be quickly assembled and disassembled through the elastic bending plate 636 and the plug-in buckle 637. In other embodiments, the channel component 63 and the bucket body 61 are fixed together by screws or welding.

[0043] When the first drive unit drives the upper gate 8 to rotate clockwise, the material discharge channel 60 at the position of the upper gate 8 opens. When the first drive unit drives the upper gate 8 to rotate counterclockwise and contact the bottom surface of the upper plate 634, the material discharge channel 60 at the position of the upper gate 8 closes. When the second drive unit drives the lower gate 9 to rotate clockwise, the material discharge channel 60 at the position of the lower gate 9 opens. When the second drive unit drives the lower gate 9 to rotate counterclockwise and contact the bottom surface of the lower plate 635, the material discharge channel 60 at the position of the lower gate 9 closes. The first drive unit and the second drive unit are servo motors, stepper motors, or rotary cylinders. In this embodiment, it is preferred that both the first drive unit and the second drive unit are stepper motors.

[0044] The lower end of the hopper 6 is provided with a discharge port, and the lower end of the hopper 6 is provided with a collection gate 64. The collection gate 64 is connected to a third drive unit that drives it to swing to control the opening or closing of the discharge port. Furthermore, the lower end of the hopper 6 is provided with a partition 65. The front side of the partition 65 forms a front collection chamber 651 between itself and the hopper 6, and the rear side forms a rear collection chamber 652 between itself and the hopper 6. The partition 65 divides the discharge port at the lower end of the hopper 6 into a first discharge port and a second discharge port. Collection gates 64 are provided on the front and rear sides of the partition 65 respectively. The two collection gates 64 are respectively connected to the third drive unit. The third drive unit is a servo motor, a stepper motor, or a rotary cylinder. In this embodiment, the third drive unit is preferably a stepper motor. The third drive unit is fixed to the left side of the hopper body 61.

[0045] A portion of the material falling through the several material discharge channels 60 enters the front collection chamber 651, and another portion enters the rear collection chamber 652. Further, the material discharge channels 60 are provided with six, seven, eight, nine, ten, or more. In this embodiment, it is preferred that ten material discharge channels 60 are provided. The material from the front five material discharge channels 60 falls into the front collection chamber 651, and then falls onto the front collection gate 64. The material from the rear five material discharge channels falls into the rear collection chamber 652, and then falls onto the rear collection gate 64. When a third drive unit drives the collection gate 64 connected to it to rotate clockwise, the material on the collection gate 64 falls off. When the third drive unit drives the collection gate 64 to rotate counterclockwise and contact the partition 65, the material discharge is closed.

[0046] The number of primary array slots 31, secondary array slots 41 and inclined slides 51 is the same as the number of material drop channels 60.

[0047] The CCD vision system 7 is installed inside the frame 1. The lens of the CCD vision system 7 faces the scanning gap between the upper part of the hopper 6 and the slide 5 and corresponds to the backlight strip 71. The CCD vision system 7 is used to identify the material sliding down from the scanning gap. Furthermore, there are two CCD vision systems 7 arranged longitudinally. The lens of the front CCD vision system 7 is used to scan the first half of the longitudinal width of the scanning gap, and the lens of the rear CCD vision system 7 is used to scan the second half of the longitudinal width of the scanning gap. That is, the front CCD vision system 7 scans the number of materials sliding down the five inclined slides 51 on the front side, and the rear CCD vision system 7 scans the number of materials sliding down the five inclined slides 51 on the rear side.

[0048] The control device 10 is a conventional industrial control host, PLC controller, or micro-control host, etc. The control device 10 is electrically connected to the first drive unit, the second drive unit, the first-level linear vibrating plate 3, the second-level linear vibrating plate 4, and the CCD vision system 7.

[0049] Counting principle: As the material slides down from the discharge end of several inclined slides 51, it passes through the scanning gap and leaves an image on the vision system. The CCD vision system 7 analyzes and calculates the image to determine the quantity of material and feeds the quantity information back to the control device 10.

[0050] The principle of this combined multi-camera vision particle counter is as follows: After the equipment starts, the material output from the feeding hopper 2 enters several primary array slots 31 on the primary linear vibrating plate 3. The primary linear vibrating plate 3 conveys the material to the right and into several secondary array slots 41 on the secondary linear vibrating plate 4. The secondary linear vibrating plate 4 conveys the material to the right and into several inclined slides 51 on the slide rail 5. The material then slides down from the discharge end of the inclined slide 51, passes through the scanning gap, and enters several dropping channels 60 on the collecting hopper 6, finally landing on the upper gate plate 8. The CCD vision system 7 scans and identifies the number of materials sliding down from the scanning gap in real time and feeds it back to the control device 10. The control device 10 records the number of materials falling onto the upper gate plate 8 in real time. The control device 10 controls the first... The drive unit drives the upper gate plate 8 to flip, causing the material to fall onto the lower gate plate 9. After the material is discharged, the first drive unit drives the upper gate plate 8 to close. At the same time, the control device 10 records the amount of material falling onto the lower gate plate 9. When the sum of the amounts of material on several of the ten upper gate plates 8 equals the set amount of material, the control device 10 controls the second drive unit connected to those upper gate plates 8 to flip and discharge the material according to the set amount command, so that the material falls onto the two collecting gate plates 64. After the material is discharged, the second drive unit drives the lower gate plate 9 to close. When the collecting hopper 6 needs to discharge material, the two third drive units drive the two collecting gate plates 64 to flip and discharge material simultaneously. After the material is discharged, the third drive units drive the collecting gate plates 64 to close. When the five upper gates 8 on the front side and the five upper gates 8 on the rear side need to be fed separately, if the sum of the material quantity on some of the upper gates 8 on the front side equals the set material quantity, and the sum of the material quantity on some of the upper gates 8 on the rear side equals the set material quantity, the control device 10 controls the second drive unit connected to the upper gates 8 to drive the upper gates 8 to flip and feed the material according to the set quantity command, so that the material on the upper gates 8 on the front side falls into the material collection chamber 651 at the bottom. Material on the gate 64 falls onto the collecting gate 64 at the bottom of the rear collecting chamber 652, where it is one of the five upper gates 8. After material is discharged, the second drive unit drives the lower gate 9 to close. When the collecting hopper 6 needs to discharge material, one of the third drive units drives the collecting gate 64 connected to it to flip and discharge the material. After material is discharged, the third drive unit drives the collecting gate 64 to close. When discharging material again, another third drive unit drives the collecting gate 64 connected to it to flip and discharge the material. After material is discharged, the third drive unit drives the collecting gate 64 to close.

[0051] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A combined multi-camera vision-based grain counting machine, characterized in that, include: The feeding hopper is located on top of the machine frame; The first-level linear vibrating plate has several first-level array slots on the top, and the left ends of the several first-level array slots are located below the discharge port of the feeding hopper, which is used to receive the material output from the feeding hopper and convey it to the right. The secondary linear vibrating plate has several secondary array slots on the top. The left ends of the several secondary array slots are respectively located below the discharge ends of several primary array slots, which are used to receive the material output from the primary array slots and convey it to the right. The bottom of the secondary array slots protrudes upward in the middle to form an arched structure or a Λ structure, or the bottom is W-shaped. The slide rail component is equipped with several inclined slide rails, and the left ends of the several inclined slide rails are respectively located below the discharge ends of several secondary array plate slots to receive the materials output from the secondary array plate slots. The upper part of the hopper forms a scanning gap with the slide rail component. Several material discharge channels are provided on the upper part of the hopper, which correspond one-to-one with several inclined slide rails to receive the material discharged from the inclined slide rails. Each material discharge channel is provided with an upper gate and a lower gate. The upper gate and the lower gate are connected to a first drive unit and a second drive unit to drive them to swing and control the opening or closing of the material discharge channel. The lower end of the hopper is provided with a discharge port. A CCD vision system is installed inside the frame, with the lens of the CCD vision system facing the scanning slit and corresponding to the backlight strip, for identifying materials that slip through the scanning slit; The control device is electrically connected to the first drive unit, the second drive unit, and the CCD vision system.

2. The combined multi-camera vision counting machine according to claim 1, characterized in that, The CCD vision system is configured with two lenses: one CCD vision system lens is used to scan the first half of the longitudinal width of the scanning slit, and the other CCD vision system lens is used to scan the second half of the longitudinal width of the scanning slit.

3. A combined multi-camera visual grain counter according to claim 1 or 2, characterized in that, The lower end of the hopper is provided with a material collection gate, which is connected to a third drive unit that drives it to swing to control the opening or closing of the discharge port. The third drive unit is electrically connected to the control device.

4. A combined multi-camera vision counting machine according to claim 1, characterized in that, The hopper includes a hopper body, a sealing plate fixedly connected to the hopper body, and several channel components vertically disposed within the hopper body. Each channel component includes a first plate of integral structure, a second plate and a third plate disposed on the left side of the first plate, an upper plate, and a lower plate. The second plate is disposed above the third plate. The second plate, the third plate, and the first plate form the material discharge channel. The front side of the upper plate is offset from the front side of the lower plate. The left end of the upper gate is located on the left side of the second plate and is fixedly connected to the drive shaft of the first drive unit. The left end of the lower gate is located on the left side of the third plate and is fixedly connected to the drive shaft of the second drive unit.

5. A combined multi-camera vision counting machine according to claim 1, characterized in that, The first drive unit and the second drive unit are servo motors or stepper motors.

6. A combined multi-camera vision counting machine according to claim 3, characterized in that, The third drive unit is a servo motor or a stepper motor.

7. A combined multi-camera vision counting machine according to claim 4, characterized in that, When the upper gate is in the closed state, it contacts the bottom surface of the upper plate. When the lower gate is in the closed state, it contacts the bottom surface of the lower plate. The upper part of the channel component is provided with an elastic bending plate and the lower part is provided with a plug-in buckle. The plug-in buckle is plugged into the plug hole on the bucket body. The elastic bending plate is elastically pressed against the bending inclined plate on the upper part of the bucket body. The sealing plate is a transparent acrylic plate.

8. A combined multi-camera vision counting machine according to claim 3, characterized in that, The lower end of the hopper is provided with a partition plate. The front side of the partition plate forms a front collection chamber with the hopper, and the rear side forms a rear collection chamber with the hopper. Part of the material in the several material discharge channels falls into the front collection chamber, and the other part falls into the rear collection chamber. Material collection gates are provided on the front and rear sides of the partition plate, and the two material collection gates are respectively connected to a third drive unit.

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