A carton model identification device

Abstract

The application discloses a carton type identification device and relates to the technical field of image recognition, which comprises an image collector which is stationary relative to a conveying device, and a push plate and a baffle which are arranged before and after 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 rotates relative to the conveying device 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. The baffle is used to block the cartons which move at a constant speed on the conveying device, so that the cartons are stationary, and the image collector is used to collect the images of the cartons in the stationary state; then the push plate is used to push the stationary cartons along the conveying direction, so that the cartons quickly recover to the normal conveying speed. The conveying device does not need to be frequently started, the loss is reduced, and the image collector can collect the clear images of the cartons, so that the accuracy of identification is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of image recognition, in particular to a carton model recognition device. BACKGROUND

[0002] In the process of carton recycling and production, the model of the carton on the conveying belt needs to be identified and counted. Traditional manual identification cannot adapt to the modern production rhythm of high-speed conveying, and the use of identification code identification requires the identification code to be pasted on the carton in advance, which is high in actual use cost and low in efficiency.

[0003] The Chinese utility model patent with publication number CN207503007U discloses a hub automatic conveying control system based on image recognition, which comprises a conveying line, a hub imaging system and a control system. The hub imaging system comprises a camera and a light source. The control system comprises an industrial computer and an image processing system. The MES sends the daily production plan to the model recognition system through the control system network port. The hub triggered by the previous process stops the photoelectric sensor, the PLC triggers the hub image acquisition signal, the control system controls the camera and the light source to collect the hub picture, and the hub picture processed by the image processor is compared with the hub model database in the system through software algorithm to identify the hub model. The hub model information is output to the external control unit PLC through the control system network port, and the hub continues to move to the processing position.

[0004] The Chinese utility model patent with publication number CN214504428U discloses a carton model recognition device, which comprises a conveying table, a plurality of parallel arranged non-powered rollers, a conveying channel composed of the plurality of non-powered rollers, a push mechanism and an acceleration measuring mechanism arranged in sequence along the conveying channel, an output end of the push mechanism provided with a push piece, and the push piece located above the conveying channel.

[0005] In the prior art including the above-mentioned patent, although the image recognition device can identify the model of the carton on the conveying belt. However, when the image recognition instrument collects the carton image, if the carton is in a stationary state, the conveying belt needs to be frequently started, which not only reduces the production efficiency, but also increases the loss of the conveying belt and the power device, and reduces the service life of the equipment. If the carton is always in a fast moving state, the image recognition instrument is difficult to capture a clear image, which affects the judgment of the system on the carton image information. Based on this, how to improve the recognition accuracy of the image recognition device without increasing the loss of the conveying equipment is a problem to be solved by those skilled in the art. SUMMARY

[0006] The purpose of the present application is to provide a carton model recognition device to solve the above-mentioned problems in the prior art.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a carton type identification device, comprising an image collector which is stationary relative to a conveying device, and further comprising a push plate and a baffle plate which are arranged forward and backward along the conveying direction of the conveying device; the baffle plate rotates relative to the conveying device and its rotation 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 rotation axes of the push plate and the baffle plate 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 avoiding state and a horizontal pushing state, and the baffle plate has a horizontal blocking state and an inclined avoiding state.

[0009] As a preferred technical scheme of the present application, the carton type identification device further comprises a bracket which is stationary relative to the conveying device, and a round rod which is parallel to the conveying direction of the conveying device is mounted on the bracket; the push plate and the baffle plate are both movably connected with the round rod.

[0010] As a preferred technical scheme of the present application, a yoke which cooperates with the push plate is slidably mounted on the bracket along the axial direction of the round rod; a plurality of first guide grooves and second guide grooves which are uniformly arranged along the circumferential direction of the round rod are formed on the surface of the round rod; and a protruding part which cooperates with the first guide grooves and the second guide grooves is formed on the contact surface of the push plate and the round rod.

[0011] As a preferred technical scheme of the present application, the first guide grooves comprise first spiral segments and first horizontal segments which are arranged forward and backward along the conveying direction of the conveying device; and the second guide grooves comprise second horizontal segments and second spiral segments which are arranged forward and backward along the conveying direction of the conveying device; the end of the first horizontal segment is in communication with the end of the second spiral segment, and the end of the second horizontal segment is in communication with the end of the first spiral segment.

[0012] As a preferred technical scheme of the present application, the protruding part movably cooperates with the push plate, and an elastic member in a compressed state is connected between the protruding part and the push plate; a step is arranged at the junction of the first horizontal segment and the second spiral segment, so that the protruding part cannot directly enter the first horizontal segment from the second spiral segment; and a step is arranged at the junction of the second horizontal segment and the first spiral segment, so that the protruding part cannot directly enter the second horizontal segment from the first spiral segment.

[0013] As a preferred technical scheme of the present application, a chuck which is insertedly connected with the baffle plate is rotatably mounted on the round rod, and a stopper which cooperates with the chuck is fixedly mounted on the bracket.

[0014] As a preferred technical scheme of the present application, a round roller is rotatably mounted on the chuck; a guide frame which cooperates with the round roller is fixedly mounted on the yoke, and the guide frame comprises an inclined segment and a horizontal segment.

[0015] As a preferred embodiment of the present invention, the image acquisition device includes a first acquisition device located above the conveying device and a second acquisition device located on the side of the conveying device.

[0016] As a preferred embodiment of the present invention, a push arm is slidably mounted on the baffle along its length direction, and a limiting block that cooperates with the push arm is fixedly mounted on the baffle.

[0017] As a preferred embodiment of the present invention, the push arm is equipped with rollers that fit against the surface of the baffle.

[0018] In the above technical solution, the carton model recognition device provided by the present invention first blocks the carton moving at a constant speed on the conveyor device through a baffle during the recognition process, so that the carton stops and an image of the carton in the stationary state is acquired; then, a pusher pushes the stationary carton along the conveying direction, so that the carton quickly returns to the normal conveying speed. In this way, the conveyor device can remain continuously powered on without frequent starts, reducing wear and tear on the conveyor device, and the image acquisition device can acquire a clear image of the carton, ensuring the accuracy of recognition. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

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

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the push plate and the protrusion in the embodiment;

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

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

[0025] Figure 6 This is a schematic diagram of the fourth three-dimensional structure of the carton model identification device in an embodiment of the present invention;

[0026] Figure 7 for Figure 6An enlarged schematic view at B;

[0027] Figure 8 A front view of a carton type identification device in an embodiment of the present application.

[0028] Legend of reference signs:

[0029] 1, image collector; 101, first collector; 102, second collector; 2, push plate; 3, baffle; 4, bracket; 5, round rod; 501, first guide groove; 502, second guide groove; 6, shift fork; 7, protruding part; 8, chuck; 9, stop block; 10, round roller; 11, guide frame; 1101, inclined section; 1102, horizontal section; 12, push arm; 13, limiting block. DETAILED DESCRIPTION

[0030] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0031] As shown in Figure 1 , the present embodiment provides a carton type identification device, which comprises an image collector 1 stationary relative to a conveying device, the image collector 1 comprising a first collector 101 located above the conveying device and a second collector 102 located at the side of the conveying device. The first collector 101 collects images of the top surface of the carton to obtain the length and width dimensions of the carton, and the second collector 102 collects images of the side surface of the carton to obtain the height dimension of the carton. The image collector 1 transmits the collected raw data to a data processing workstation through Wi-Fi, Bluetooth or data line, etc.

[0032] As shown in Figure 4 , the carton type identification device of the present embodiment further comprises a push plate 2 and a baffle 3 arranged before and after the conveying direction of the conveying device. The push plate 2 and the baffle 3 are both made of lightweight plastic, and to further reduce the mass of the push plate 2 and the baffle 3, the push plate 2 and the baffle 3 can be made hollow. At the upstream of the conveying device, an operator places the processed cartons on the conveying device one by one, and the cartons translate at a constant speed along the predetermined conveying direction, and the distance between adjacent cartons is basically constant (with an error within 5 cm). The conveying device in the present embodiment can adopt a conveying belt or a conveying roller. The baffle 3 rotates relative to the conveying device, and the rotation axis thereof is parallel to the conveying direction of the conveying device; the push plate 2 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 avoiding state and a horizontal pushing state, and the baffle 3 has a horizontal blocking state and an inclined avoiding state.

[0033] Specifically, Figure 4The initial state is shown, the baffle 3 is in the blocking state, and the push plate 2 is in the avoidance state. The carton on the conveying device passes through the position of the push plate 2 and continues to move forward until it is in contact with the baffle 3. The baffle 3 blocks the carton and makes the carton stationary. The image collector 1 collects the image of the carton in the stationary state. Then the baffle 3 quickly enters the avoidance state, and the push plate 2 quickly translates towards the baffle 3 and synchronously enters Figure 5 the pushing state shown. The carton blocked by the baffle 3 starts to move with the conveying device from the stationary state, but in actual work, it takes a certain time to accelerate the carton to the predetermined conveying speed. In order to promote the carton to reach the conveying speed as soon as possible, avoid the situation that the baffle 3 cannot block the rear carton due to the contact between the rear carton and the carton, and in this embodiment, the push plate 2 assists in pushing the carton. Specifically, from Figure 5 the state to Figure 6 the state, the push plate 2 keeps the pushing state and quickly translates, and the baffle 3 keeps the avoidance state. Since the translation speed of the push plate 2 is faster than the conveying speed, the carton can quickly move under the pushing of the push plate 2 and fill the gap with the previous carton due to the blocking, so as to ensure the constant distance between the cartons. After the push plate 2 completes the pushing, it quickly recovers to the avoidance state and synchronously quickly translates to reset, and finally recovers to Figure 4 the state shown, and the baffle 3 also synchronously recovers to Figure 4 the blocking state shown, ready for the next carton to arrive. In this embodiment, the push plate 2 and the baffle 3 complete the above actions from Figure 4 the state and recover to Figure 4 the state in 2s, and the distance between the adjacent cartons also needs 2s to complete according to the conveying speed of the conveying device.

[0034] As Figure 3 , Figure 4 and Figure 5As shown, the carton model recognition device of the embodiment further comprises a support 4 which is stationary relative to the conveying device, a round rod 5 which is parallel to the conveying direction of the conveying device is installed on the support 4, and the push plate 2 and the baffle 3 are movably connected with the round rod 5. A shift fork 6 which cooperates with the push plate 2 is slidably installed on the support 4 along the axial direction of the round rod 5, and the shift fork 6 is driven by a screw rod. A motor for driving the screw rod is installed on the support 4, the shift fork 6 is translated at a speed faster than the conveying speed of the conveying device, and the surface of the round rod 5 is provided with three groups of first guide grooves 501 and second guide grooves 502 which are uniformly arranged along the circumferential direction of the round rod 5. The contact surface (circular surface) of the push plate 2 and the round rod 5 is provided with a protruding part 7 which cooperates with the first guide grooves 501 and the second guide grooves 502. The protruding part 7 movably cooperates with the push plate 2, and an elastic member in a compressed state is connected between the protruding part 7 and the push plate 2, so that the end of the protruding part 7 is always in close contact with the groove bottom surface of the first guide groove 501 or the second guide groove 502. In the embodiment, the elastic member is a spring, the protruding part 7 is cylindrical, and can rotate relative to the push plate 2 and the elastic member. The contact part of the push plate 2 and the protruding part 7 is filled with talcum powder to reduce the friction. The first guide groove 501 comprises a first helical section and a first horizontal section which are arranged in front of and behind the conveying direction of the conveying device. The second guide groove 502 comprises a second horizontal section and a second helical section which are arranged in front of and behind the conveying direction of the conveying device. The end of the first horizontal section is in communication with the end of the second helical section, and the end of the second horizontal section is in communication with the end of the first helical section. A step (different groove depth) is arranged at the junction of the first horizontal section and the second helical section, so that the protruding part 7 cannot directly enter the first horizontal section from the second helical section. A step (different groove depth) is arranged at the junction of the second horizontal section and the first helical section, so that the protruding part 7 cannot directly enter the second horizontal section from the first helical section.

[0035] Specifically, Figure 4 In the initial state, the protruding part 7 is located at the starting point of the first helical section. As the shift fork 6 moves the push plate 2 towards the baffle 3, the protruding part 7 also moves along the first helical section and drives the push plate 2 to rotate, and the push plate 2 enters the pushing state. Then the protruding part 7 enters the first horizontal section, the push plate 2 no longer rotates and remains in the pushing state until the protruding part 7 enters the end of the second helical section. Since a step is arranged at the junction of the first horizontal section and the second helical section, the protruding part 7 cannot directly enter the first horizontal section from the second helical section. Therefore, when the shift fork 6 drives the push plate 2 to return to the starting point, the protruding part 7 can only enter the second helical section and drive the push plate 2 to rotate, and the push plate 2 recovers from the pushing state to the avoiding state. Then the protruding part 7 enters the second horizontal section, the push plate 2 no longer rotates and remains in the avoiding state until it is translated to the initial position, and the protruding part 7 also synchronously enters the end of the first helical section. Since a step is arranged at the junction of the second horizontal section and the first helical section, the protruding part 7 cannot directly enter the second horizontal section from the first helical section. Therefore, when the shift fork 6 drives the push plate 2 to move towards the baffle 3 again, the protruding part 7 can only move along the first helical section.

[0036] As shown in Figure 1 , Figure 7 and Figure 8 , the round rod 5 is rotatably installed with a chuck 8 which is plugged with the baffle 3, the baffle 3 rotates synchronously with the chuck 8, and the bracket 4 is fixedly installed with a stopper 9 which cooperates with the chuck 8. It should be noted that the rotation axis of the baffle 3 is close to one end of the baffle 3, so the baffle 3 has a tendency to rotate downward to the vertical state, but due to the blocking of the stopper 9 to the chuck 8, the baffle 3 remains in the horizontal blocking state without external force. The chuck 8 is rotatably installed with a round roller 10, and when the baffle 3 is in the blocking state, the round roller 10 is in the horizontal state. The shift fork 6 is fixedly installed with a guide frame 11 which cooperates with the round roller 10 at a position corresponding to the round roller 10, and the guide frame 11 includes an inclined segment 1101 and a horizontal segment 1102, the bottom surfaces of the inclined segment 1101 and the horizontal segment 1102 are both circular arc surfaces. The shift fork 6 will drive the guide frame 11 to move synchronously when the shift fork 6 translates. Specifically, Figure 4 As shown in the initial state, the top of the inclined segment 1101 is in contact with the round roller 10. As the shift fork 6 drives the guide frame 11 to translate, the inclined segment 1101 pushes the round roller 10, so that the round roller 10, the chuck 8 and the baffle 3 rotate synchronously, and the baffle 3 enters the avoiding state; when the push plate 2 enters the pushing state from the avoiding state, the horizontal segment 1102 also contacts the round roller 10, and then the guide frame 11 limits the round roller 10, so that the position of the round roller 10, the chuck 8 and the baffle 3 relative to the bracket 4 remains unchanged, and the baffle 3 remains in the avoiding state. During the reverse translation of the shift fork 6 driving the guide frame 11 to reset, when the inclined segment 1101 contacts the round roller 10, the round roller 10, the chuck 8 and the baffle 3 as a whole rotate downward under the gravity of the baffle 3 until they return to the initial state, i.e. the state that the chuck 8 is in contact with the stopper 9.

[0037] As shown in Figure 1 and Figure 2As shown, the push arm 12 is slidingly installed on the baffle 3 along the length direction of the baffle 3, and the limiting block 13 is fixedly installed on the baffle 3 and cooperates with the push arm 12; the roller is installed on the push arm 12 and is attached to the surface of the baffle 3 to reduce the friction between them. The push arm 12 is a U-shaped structure, and the metal block is fixedly installed on the middle section of the push arm 12, and one end of the push arm 12 is used to push the carton so that the carton is displaced vertically to the conveying direction. The two ends of the push arm 12 cooperate with the limiting block 13 to ensure that the displacement of the push 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 push arm 12 is attached to the limiting block 13. When the baffle 3 is quickly rotated downward, the push arm 12 moves away from the rotation axis under the action of centrifugal force and pushes the carton on the conveying device which is about to be blocked vertically to the conveying direction. In this embodiment, the positioning plate which is stationary relative to the conveying device is fixedly installed on the support 4, and the positioning plate is located between the carton and the second collector 102, is parallel to the conveying direction and is in a vertical state, and the position of the positioning plate corresponds to the position of the baffle 3. In this way, during the pushing process of the push arm 12 on the carton, the positioning plate plays a positioning role on the carton, so that the distance of each carton relative to the second collector 102 is the same, so that the situation that the second collector 102 causes errors in collecting the height data of the carton due to the perspective relationship that the near is large and the far is small is greatly reduced.

[0038] The foregoing merely describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present application.

Claims

1. A carton type identification device comprising an image collector (1) stationary with respect to a conveying device, characterized in that, The push plate (2) and the baffle (3) are arranged in front of and behind each other along the conveying direction of the conveying device; the baffle (3) rotates relative to the conveying device, and the rotating axis of the baffle (3) is parallel to the conveying direction of the conveying device; the push plate (2) rotates and moves relative to the conveying device; the rotating 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 avoiding state and a horizontal pushing state, and the baffle (3) has a horizontal blocking state and an inclined avoiding state. The push plate (2) and the baffle (3) are arranged in front of and behind each other along the conveying direction of the conveying device; the baffle (3) rotates relative to the conveying device, and the rotating axis of the baffle (3) is parallel to the conveying direction of the conveying device; the push plate (2) rotates and moves relative to the conveying device; the rotating 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 first guide groove (501) comprises a first spiral section and a first horizontal section which are arranged in front of and behind each other along the conveying direction of the conveying device; and the second guide groove (502) comprises a second horizontal section and a second spiral section which are arranged in front of and behind each other along the conveying direction of the conveying device; the end of the first horizontal section is communicated with the end of the second spiral section, and the end of the second horizontal section is communicated with the end of the first spiral section. The first guide groove (501) comprises a first spiral section and a first horizontal section which are arranged in front of and behind each other along the conveying direction of the conveying device; and the second guide groove (502) comprises a second horizontal section and a second spiral section which are arranged in front of and behind each other along the conveying direction of the conveying device; the end of the first horizontal section is communicated with the end of the second spiral section, and the end of the second horizontal section is communicated with the end of the first spiral section. The chuck (8) is rotatably installed on the circular rod (5) and is insertedly connected with the baffle (3); the stop block (9) is fixedly installed on the support (4) and is connected with the chuck (8); the circular roller (10) is rotatably installed on the chuck (8); the guide frame (11) is fixedly installed on the yoke (6) and is connected with the circular roller (10); the guide frame (11) comprises an inclined section (1101) and a horizontal section (1102).

2. A carton type identification device according to claim 1, characterised in that, The image collector (1) comprises a first collector (101) arranged above the conveying device and a second collector (102) arranged on the side of the conveying device.

3. A carton type identification apparatus according to claim 2, wherein The push plate (3) is slidably installed on the baffle (3) along the length direction of the baffle (3); and the limiting block (13) is fixedly installed on the baffle (3) and is connected with the push arm (12).

4. A carton type identification apparatus according to claim 3, wherein The push arm (12) is installed with a roller which is attached to the surface of the baffle (3).

Images