Carton model identification device

Abstract

The invention discloses a carton model recognition device, which relates to the technical field of image recognition, and comprises an image collector which is static relative to a conveying device, and a push plate and a baffle which are arranged front and back along the conveying direction of the conveying device, the baffle rotates relative to the conveying device, and the rotating axis is parallel to the conveying direction of the conveying device. The push plate rotates relative to the conveying device and moves relative to the conveying device; the rotating axes of the push plate and the baffle coincide, and the moving direction of the push plate is parallel to the conveying direction of the conveying device. According to the carton conveying device, the baffles are used for blocking cartons moving at a constant speed on the conveying device, so that the cartons are static, and image collection is conducted on the cartons in the static state; and then the static cartons are pushed through the push plate in the conveying direction, so that the cartons are rapidly recovered to the normal conveying speed. The conveying device does not need to be started frequently, loss is reduced, the image collector can collect clear images of the cartons, and the recognition accuracy is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of image recognition, and in particular to a carton model recognition device. Background Art

[0002] Carton type identification and counting on conveyor belts are essential during both recycling and production processes. Traditional manual identification cannot adapt to the high-speed production pace of modern transportation. Identification codes, on the other hand, require pre-application of identification codes on cartons, which is costly and inefficient.

[0003] Chinese utility model patent publication number CN207503007U discloses an automatic wheel conveying control system based on image recognition, including a conveyor line, a wheel imaging system, and a control system; the wheel imaging system includes a camera and a light source. The control system includes an industrial computer and an image processing system. The MES sends the daily production schedule to the model recognition system via the control system network port. The wheel transferred from the previous process triggers the photoelectric sensor to stop, the PLC triggers the wheel image acquisition signal, and the control system controls the camera and light source to capture the wheel image. The wheel image processed by the image processor is compared with the system's internal wheel model database through a software algorithm to identify the wheel model. The wheel model information is then output to the external control unit PLC via the control system network port, and the wheel continues to move to the processing position.

[0004] The Chinese utility model patent with publication number CN214504428U discloses a carton model identification device, including a conveyor platform, which is provided with multiple parallel arranged unpowered rollers, and the multiple unpowered rollers form a conveying channel, and the conveying channel is used to place cartons. The conveyor platform is provided with a thrust mechanism and an acceleration measuring mechanism along the conveying channel in sequence, and the acceleration measuring mechanism is used to measure the acceleration of the carton. The output end of the thrust mechanism is provided with a push piece, and the push piece is located above the conveying channel.

[0005] In the prior art, including the aforementioned patent, image recognition devices can identify the model of cartons on a conveyor belt. However, when the image recognition device collects carton images, if the carton is stationary, the conveyor belt needs to be frequently started, which not only reduces production efficiency but also increases wear and tear on the conveyor belt and power unit, shortening the service life of the equipment. If the carton is constantly moving at high speed, it will be difficult for the image recognition device to capture a clear image, which will affect the system's judgment of the carton image information. Based on this, how to improve the recognition accuracy of the image recognition device without increasing wear and tear on the conveyor equipment is a problem that those skilled in the art need to solve. Summary of the Invention

[0006] The purpose of the present invention is to provide a carton model identification device to solve the above-mentioned deficiencies in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a carton model recognition device, comprising an image collector that is stationary relative to a conveying device, and also comprising a push plate and a baffle arranged front and back along the conveying direction of the conveying device; the baffle rotates relative to the conveying device and its rotation axis is parallel to the conveying direction of the conveying device; the push plate both rotates and moves relative to the conveying device; the rotation axes of the push plate and the baffle coincide, and the moving direction of the push plate is parallel to the conveying direction of the conveying device.

[0008] The push plate has an inclined avoidance state and a horizontal pushing state, and the baffle has a horizontal blocking state and an inclined avoidance state.

[0009] As a preferred technical solution of the present invention, the carton model identification device also includes a bracket that is stationary relative to the conveying device, and a round rod parallel to the conveying direction of the conveying device is installed on the bracket, and the push plate and the baffle are movably coordinated with the round rod.

[0010] As a preferred technical solution of the present invention, a shift fork is installed on the bracket for sliding along the axial direction of the round rod and cooperates with the push plate; the surface of the round rod is provided with a plurality of first guide grooves and second guide grooves evenly arranged along its circumference, and a protrusion that cooperates with the first guide groove and the second guide groove is formed on the contact surface between the push plate and the round rod.

[0011] As a preferred technical solution of the present invention, the first guide groove includes a first spiral section and a first horizontal section arranged front and back along the conveying direction of the conveying device; the second guide groove includes a second horizontal section and a second spiral section arranged front and back along the conveying direction of the conveying device; the end of the first horizontal section is connected to the end of the second spiral section, and the end of the second horizontal section is connected to the end of the first spiral section.

[0012] As a preferred technical solution of the present invention, the raised portion is movably cooperated with the push plate, and an elastic part in a compressed state is connected between the two; a step is provided at the junction of the first horizontal section and the second spiral section, so that the raised portion cannot directly enter the first horizontal section from the second spiral section; a step is provided at the junction of the second horizontal section and the first spiral section, so that the raised portion cannot directly enter the second horizontal section from the first spiral section.

[0013] As a preferred technical solution of the present invention, a chuck that plugs and cooperates with the baffle is rotatably mounted on the round rod, and a stopper that cooperates with the chuck is fixedly mounted on the bracket.

[0014] As a preferred technical solution of the present invention, a round roller is rotatably mounted on the chuck; a guide frame cooperating with the round roller is fixedly mounted on the shift fork, and the guide frame includes an inclined section and a horizontal section.

[0015] As a preferred technical solution of the present invention, the image collector includes a No. 1 collector located above the conveying device and a No. 2 collector located on the side of the conveying device.

[0016] As a preferred technical solution of the present invention, a push arm is slidably mounted on the baffle along its length direction, and a limit block cooperating with the push arm is fixedly mounted on the baffle.

[0017] As a preferred technical solution of the present invention, a roller that fits the surface of the baffle is installed on the pushing arm.

[0018] In the above-mentioned technical solution, the present invention provides a carton model recognition device. During the recognition process, a baffle first blocks the uniformly moving carton on the conveyor, causing it to stop, and then captures an image of the stationary carton. A push plate then pushes the stationary carton along the conveyor direction, quickly returning it to its normal conveying speed. This allows the conveyor to remain continuously powered on, eliminating the need for frequent restarts and reducing wear and tear. Furthermore, the image collector captures clear images of the carton, ensuring accurate recognition. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of a first three-dimensional structure of a carton model identification device according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0022] Figure 3 Schematic diagram of the structure of the push plate and the raised portion in the embodiment;

[0023] Figure 4 2 is a schematic diagram of a second three-dimensional structure of a carton model identification device according to an embodiment of the present invention;

[0024] Figure 5 2 is a schematic diagram of a third three-dimensional structure of a carton model identification device according to an embodiment of the present invention;

[0025] Figure 6 2 is a fourth three-dimensional structural diagram of a carton model identification device according to an embodiment of the present invention;

[0026] Figure 7 for Figure 6A magnified schematic diagram of point B in the middle;

[0027] Figure 8 It is a front view of the carton model identification device in an embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Image collector; 101. Collector No. 1; 102. Collector No. 2; 2. Push plate; 3. Baffle; 4. Bracket; 5. Round rod; 501. First guide groove; 502. Second guide groove; 6. Shift fork; 7. Raised portion; 8. Chuck; 9. Stop block; 10. Round roller; 11. Guide frame; 1101. Inclined section; 1102. Horizontal section; 12. Push arm; 13. Limit block. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] like Figure 1 As shown, this embodiment provides a carton model recognition device, comprising an image collector 1 stationary relative to a conveyor. The image collector 1 comprises a first image collector 101 located above the conveyor and a second image collector 102 located to the side of the conveyor. Image collector 101 captures images of the top surface of the carton to obtain its length and width; image collector 102 captures images of the side surface to obtain its height. Image collector 1 transmits the captured raw data to a data processing workstation via Wi-Fi, Bluetooth, or a data cable.

[0032] like Figure 4 As shown, the carton model identification device of this embodiment also includes a push plate 2 and a baffle 3 arranged in front and behind along the conveying direction of the conveyor. The push plate 2 and the baffle 3 are both made of lightweight plastic. To further reduce the weight of the push plate 2 and the baffle 3, the push plate 2 and the baffle 3 can be made into a hollow shape. Upstream of the conveyor, the operator places the processed cartons on the conveyor in sequence. The cartons move at a constant speed along the predetermined conveying direction, and the distance between adjacent cartons is basically constant (within an error of 5 cm). The conveyor in this embodiment can be a conveyor belt or a conveyor roller. The baffle 3 rotates relative to the conveyor and its rotation axis is parallel to the conveying direction of the conveyor; the push plate 2 both rotates and moves relative to the conveyor; the rotation axes of the push plate 2 and the baffle 3 coincide, and the movement direction of the push plate 2 is parallel to the conveying direction of the conveyor. The push plate 2 has an inclined avoidance state and a horizontal pushing state, and the baffle 3 has a horizontal blocking state and an inclined avoidance state.

[0033] Specifically, Figure 4In the initial state shown, the baffle 3 is in the blocking state and the push plate 2 is in the avoiding state. After the carton on the conveyor passes the position of the push plate 2, it continues to move forward until it touches the baffle 3. The baffle 3 blocks the carton and makes it stop. The image collector 1 captures the image of the carton in the stationary state. Then the baffle 3 quickly enters the avoiding state, and the push plate 2 quickly moves toward the baffle 3 and enters the Figure 5 The carton blocked by the baffle 3 starts to move with the conveying device from a stationary state. However, in actual operation, it takes a certain amount of time for the carton to accelerate to the predetermined conveying speed. In order to promote the carton to reach the conveying speed as soon as possible and avoid the carton behind it being attached to the carton, which causes the baffle 3 to be unable to block the carton behind, the push plate 2 is used to assist in pushing the carton in this embodiment. Specifically, from Figure 5 Status to Figure 6 State, push plate 2 keeps pushing state and moves quickly, baffle 3 keeps avoiding state. Since the translation speed of push plate 2 is faster than the conveying speed, the carton can move quickly under the push of push plate 2 and fill the gap between the carton and the previous carton caused by being blocked, thus ensuring the distance between each carton is constant. After push plate 2 completes pushing, it quickly returns to the avoiding state and quickly moves to reset synchronously, and finally returns to Figure 4 As shown, baffle 3 also recovers to Figure 4 The blocking state shown is ready for the next carton to arrive. In this embodiment, the push plate 2 and the baffle 3 are Figure 4 The state completes the above actions and recovers Figure 4 The time required for this state is 2s, and the distance between adjacent cartons also takes 2s to complete according to the speed of the conveyor.

[0034] like Figure 3 、 Figure 4 and Figure 5As shown, the carton model identification device of this embodiment also includes a bracket 4 that is stationary relative to the conveying device, and a round rod 5 parallel to the conveying direction of the conveying device is installed on the bracket 4. The push plate 2 and the baffle 3 are both movably coordinated with the round rod 5. The cam 5 is provided with a plurality of guide rails 501 and a plurality of guide rails 502, and the guide rails 502 are provided with a plurality of guide rails 503 and 504. The guide rails 503 are provided with a plurality of guide rails 504 and 505, respectively. The guide rails 503 are provided with a plurality of guide rails 501 and a plurality of guide rails 502, respectively. The guide rails 503 are provided with a plurality of guide rails 501 and a plurality of guide rails 502, respectively. The guide rails 503 are provided with a plurality of guide rails 501 and a plurality of guide rails 502, respectively. The guide rails 503 are provided with a plurality of guide rails 501 and a plurality of guide rails 502, respectively. The guide rails 503 are provided with a plurality of guide rails 501 and a plurality of guide rails 502, respectively. The guide rails 503 are provided with a plurality of guide rails 501 and a plurality of guide rails 502, respectively. The first guide groove 501 comprises a first spiral segment and a first horizontal segment arranged in a front-to-back relationship along the conveying direction of the conveyor. The second guide groove 502 comprises a second horizontal segment and a second spiral segment arranged in a front-to-back relationship along the conveying direction of the conveyor. The end of the first horizontal segment communicates with the end of the second spiral segment, and the end of the second horizontal segment communicates with the end of the first spiral segment. A step (of varying depths) is provided at the junction of the first horizontal segment and the second spiral segment to prevent the protrusion 7 from directly entering the first horizontal segment from the second spiral segment. A step (of varying depths) is provided at the junction of the second horizontal segment and the first spiral segment to prevent the protrusion 7 from directly entering the second horizontal segment from the first spiral segment.

[0035] Specifically, Figure 4 Then the raised portion 7 enters the second horizontal section, the push plate 2 no longer rotates and remains in the avoidance state until it is translated to the initial position, and the raised portion 7 also enters the end of the first spiral section. Since there is a step at the junction of the second horizontal section and the first spiral section, the protrusion 7 cannot directly enter the second horizontal section from the first spiral section. Therefore, when the shift fork 6 drives the push plate 2 to move toward the baffle 3 again, the protrusion 7 can only move along the first spiral section.

[0036] like Figure 1 、 Figure 7 and Figure 8 As shown, a chuck 8 that plugs into and cooperates with the baffle 3 is rotatably mounted on the round rod 5, and the baffle 3 rotates synchronously with the chuck 8. A block 9 that cooperates with the chuck 8 is fixedly mounted on the bracket 4. It should be noted that the axis of rotation of the baffle 3 is close to one end thereof, so the baffle 3 tends to rotate downward to reach a vertical state, but due to the blocking of the chuck 8 by the block 9, the baffle 3 maintains a horizontal blocking state when there is no external force. A round roller 10 is rotatably mounted on the chuck 8, and when the baffle 3 is in the blocking state, the round roller 10 is in a horizontal state. A guide frame 11 that cooperates with the round roller 10 is fixedly mounted at the position corresponding to the round roller 10 on the shift fork 6, and the guide frame 11 includes an inclined section 1101 and a horizontal section 1102, and the bottom surfaces of the inclined section 1101 and the horizontal section 1102 are both arc surfaces. When the shift fork 6 translates, it will drive the guide frame 11 to move synchronously with it. Specifically, Figure 4 In the initial state shown, the top of the inclined section 1101 is in contact with the roller 10. As the shift fork 6 drives the guide frame 11 to translate, the inclined section 1101 pushes the roller 10, causing the roller 10, the chuck 8, and the baffle 3 to rotate synchronously, and the baffle 3 enters the avoidance state. When the push plate 2 enters the push state from the avoidance state, the horizontal section 1102 also contacts the roller 10. The guide frame 11 then acts as a limiter for the roller 10, ensuring that the positions of the roller 10, the chuck 8, and the baffle 3 relative to the bracket 4 remain unchanged, and the baffle 3 remains in the avoidance state. During the process of the shift fork 6 driving the guide frame 11 to translate in the opposite direction and reset, when the inclined section 1101 contacts the roller 10, the roller 10, the chuck 8, and the baffle 3 as a whole rotate downward under the action of the gravity of the baffle 3 until they return to the initial state, i.e., the chuck 8 and the baffle 9 are in contact.

[0037] like Figure 1 and Figure 2As shown, a pushing arm 12 is slidably mounted on the baffle 3 along its length direction, and a limiting block 13 cooperating with the pushing arm 12 is fixedly mounted on the baffle 3; a roller that fits the surface of the baffle 3 is mounted on the pushing arm 12 to reduce the frictional force therebetween. The pushing arm 12 is in a U shape, a metal block is fixedly mounted on the middle section thereof, and one end thereof is used to push the carton, so that the carton generates a displacement perpendicular to the conveying direction. The two ends of the pushing arm 12 cooperate with the limiting block 13 to ensure that the displacement of the pushing arm 12 relative to the baffle 3 is within a certain range. Specifically, when the baffle 3 is in an inclined state, the top end of the pushing arm 12 abuts against the limiting block 13. When the baffle 3 rotates rapidly downward, the pushing arm 12 moves in a direction away from the rotation axis under the action of centrifugal force, and pushes the carton on the conveying device that is about to be blocked in a direction perpendicular to the conveying direction. In this embodiment, a positioning plate that is stationary relative to the conveying device is fixedly mounted on the bracket 4. The positioning plate is located between the carton and the second collector 102, the positioning plate is parallel to the conveying direction and in a vertical state, and the position of the positioning plate corresponds to the position of the baffle 3. Thus, during the process of the pushing arm 12 pushing the carton, the positioning plate plays a positioning role for the carton, so that the distance of each carton relative to the second collector 102 is the same, and thus the situation that the second collector 102 generates errors in collecting the height data of the carton due to the perspective relationship of near being large and far being small is greatly reduced.

[0038] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A carton model recognition device, comprising an image collector (1) that is stationary relative to a conveying device, characterized in that: It also includes a push plate (2) and a baffle (3) arranged front and rear along the conveying direction of the conveying device; the baffle (3) rotates relative to the conveying device and its rotation axis is parallel to the conveying direction of the conveying device; the push plate (2) both rotates relative to the conveying device and moves relative to the conveying device; the rotation axes of the push plate (2) and the baffle (3) coincide, and the moving direction of the push plate (2) is parallel to the conveying direction of the conveying device; The push plate (2) has an inclined avoidance state and a horizontal pushing state, and the baffle (3) has a horizontal blocking state and an inclined avoidance state.

2. A carton model identification device according to claim 1, characterized in that: It also includes a bracket (4) that is stationary relative to the conveying device, and a round rod (5) is installed on the bracket (4) parallel to the conveying direction of the conveying device, and the push plate (2) and the baffle (3) are both movably matched with the round rod (5).

3. A carton model identification device according to claim 2, characterized in that: A shift fork (6) cooperating with the push plate (2) is slidably mounted on the bracket (4) along the axial direction of the round rod (5); a plurality of first guide grooves (501) and second guide grooves (502) uniformly arranged along the circumference of the round rod (5) are formed on the surface of the round rod (5); and a protrusion (7) cooperating with the first guide grooves (501) and the second guide grooves (502) is formed on the contact surface between the push plate (2) and the round rod (5).

4. A carton model identification device according to claim 3, characterized in that: The first guide groove (501) comprises a first spiral section and a first horizontal section arranged front to back along the conveying direction of the conveying device; the second guide groove (502) comprises a second horizontal section and a second spiral section arranged front to back along the conveying direction of the conveying device; the end of the first horizontal section is connected to the end of the second spiral section, and the end of the second horizontal section is connected to the end of the first spiral section.

5. A carton model identification device according to claim 4, characterized in that: The protrusion (7) and the push plate (2) are movably matched, and an elastic member in a compressed state is connected between the two; a step is provided at the junction of the first horizontal section and the second spiral section, so that the protrusion (7) cannot directly enter the first horizontal section from the second spiral section; a step is provided at the junction of the second horizontal section and the first spiral section, so that the protrusion (7) cannot directly enter the second horizontal section from the first spiral section.

6. A carton model identification device according to claim 3, characterized in that: A chuck (8) that plugs into and fits with the baffle (3) is rotatably mounted on the round rod (5), and a stopper (9) that fits with the chuck (8) is fixedly mounted on the bracket (4).

7. A carton model identification device according to claim 6, characterized in that: A round roller (10) is rotatably mounted on the chuck (8); a guide frame (11) that cooperates with the round roller (10) is fixedly mounted on the shift fork (6), and the guide frame (11) includes an inclined section (1101) and a horizontal section (1102).

8. A carton model identification device according to claim 1, characterized in that: The image collector (1) comprises a first collector (101) located above the conveying device and a second collector (102) located on the side of the conveying device.

9. A carton model identification device according to claim 8, characterized in that: A push arm (12) is slidably mounted on the baffle (3) along its length direction, and a limit block (13) cooperating with the push arm (12) is fixedly mounted on the baffle (3).

10. A carton model identification device according to claim 9, characterized in that: The pushing arm (12) is provided with a roller that fits the surface of the baffle (3).

Images