Circular cigarette case skin orientation correction device and correction method

Abstract

The present invention discloses a device and a method for correcting the orientation of the box skin of a circulating cigarette box. The device includes a first transmission mechanism, a rotating mechanism, a second transmission mechanism, an image acquisition mechanism, a processor, a first push rod, a second push rod, and a third push rod. The two sides of the rotating mechanism are respectively docked with the first transmission mechanism and the second transmission mechanism. The second transmission mechanism is provided with a first rejection area and a second rejection area. The image acquisition mechanism is arranged above the rotating mechanism and is used to acquire the box skin picture on the rotating mechanism. The processor is connected to the image acquisition mechanism. The first push rod is used to push the box skin on the rotating mechanism onto the second transmission mechanism. The second push rod is arranged on one side of the first rejection area. The third push rod is arranged on one side of the second rejection area. The present invention can realize the automatic recognition and correction of the box skin orientation without manual participation, and at the same time realize the rejection of the box skin with wrong brand number, saving labor and improving the correction accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco, and in particular to a device and method for correcting the orientation of the skin of a recycling cigarette box. Background Art

[0002] In the tobacco field, the use of recycling cigarette boxes is being vigorously promoted. However, there are the following difficulties in the process of using recycling cigarette boxes: the front and back sides or the orientations of the sides of the skin of the recycling cigarette box are inconsistent, and even the skins of other brands are mixed in one type of skin. However, the cigarette bar automatic cartoning machine can only use the skin with a fixed surface and a fixed orientation. Different front and back sides and orientations of the skin will cause the cigarette bar automatic cartoning machine to jam and stop, and the mixing of skins of other brands in the skin will cause serious quality defect accidents. Therefore, in the prior art, it is necessary to manually check and sort each recycling cigarette box skin one by one, which wastes a large amount of labor and there is also a phenomenon of missed inspection. Summary of the Invention

[0003] The purpose of the present invention is to provide a device and method for correcting the orientation of the skin of a recycling cigarette box to solve the above problems in the prior art and achieve accurate identification and adjustment and correction of the orientation of the cigarette box skin.

[0004] The present invention provides a device for correcting the orientation of the skin of a recycling cigarette box, which includes:

[0005] A first transmission mechanism;

[0006] A rotating mechanism, one side of which is docked with the first transmission mechanism;

[0007] A second transmission mechanism, the other side of which is docked with the rotating mechanism, and a first rejection area and a second rejection area are provided on the second transmission mechanism;

[0008] An image acquisition mechanism, which is arranged above the rotating mechanism and is used to acquire pictures of the skin on the rotating mechanism;

[0009] A processor, which is connected to the image acquisition mechanism;

[0010] A first push rod, which is used to push the skin on the rotating mechanism onto the second transmission mechanism;

[0011] A second push rod, which is arranged on one side of the first rejection area;

[0012] A third push rod, which is arranged on one side of the second rejection area.

[0013] The cyclic cigarette case skin orientation correction device as described above, wherein, preferably, it further includes a first lifting baffle and a second lifting baffle. The first lifting baffle is arranged between the first rejection area and the second rejection area, and the second lifting baffle is arranged on the side of the second rejection area away from the first rejection area.

[0014] The cyclic cigarette case skin orientation correction device as described above, wherein, preferably, it further includes a first photoelectric sensor and a second photoelectric sensor. The first photoelectric sensor is arranged in the first rejection area, and the second photoelectric sensor is arranged in the second rejection area.

[0015] The cyclic cigarette case skin orientation correction device as described above, wherein, preferably, it further includes a display, and the display is connected to the processor.

[0016] The cyclic cigarette case skin orientation correction device as described above, wherein, preferably, the rotation mechanism includes a bracket, a rotating platform and a motor. The rotating platform is rotatably connected to the bracket, the fixed part of the motor is arranged on the bracket, and the driving part of the motor is connected to the rotating platform.

[0017] The cyclic cigarette case skin orientation correction device as described above, wherein, preferably, the first transmission mechanism includes a horizontal conveyor belt, an inclined conveyor belt and a limiting conveyor belt. One end of the inclined conveyor belt is connected to the horizontal conveyor belt, and the other end of the inclined conveyor belt is docked with the rotation mechanism;

[0018] The limiting conveyor belt is arranged above the inclined conveyor belt and maintains a preset distance from the inclined conveyor belt.

[0019] The cyclic cigarette case skin orientation correction device as described above, wherein, preferably, it further includes a first tray, a second tray and a third tray. The first tray is docked with the first rejection area, the second tray is docked with the second rejection area, and the third tray is docked with one end of the second transmission mechanism away from the rotation mechanism.

[0020] The present invention also provides a method for correcting the orientation of the cyclic cigarette case skin. Among them, the cyclic cigarette case skin orientation correction device provided by the present invention is adopted, and the method includes the following steps:

[0021] Set a standard image in the processor according to the brand of the box skin to be detected;

[0022] Convey the box skin to be detected onto the rotation mechanism;

[0023] Obtain the measured image of the box skin to be detected;

[0024] Perform homography matching on the measured image and the standard image to obtain the coordinates and quantity of the successfully matched key point pairs;

[0025] Determine whether the quantity of the key point pairs is greater than a first preset value;

[0026] If so, determine whether the detection surface of the box skin to be detected is the front;

[0027] If so, obtain the rotation correction angle of the current box skin according to the coordinates of the key point pairs;

[0028] If the result of determining whether the detection surface of the box skin to be detected is the front is negative, convey the box skin to be detected to the second rejection area and reject it with a third push rod;

[0029] If the result of determining whether the quantity of the key point pairs is greater than the first preset value is negative, determine whether the quantity of the key point pairs is greater than a second preset value and less than or equal to the first preset value;

[0030] If so, convey the box skin to be detected to the first rejection area and reject it with a second push rod.

[0031] The cyclic cigarette box skin orientation correction device and correction method provided by the present invention realize automatic recognition and correction of the box skin orientation and rejection of box skins with wrong brands without manual participation, saving labor and improving the correction accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The following further elaborates on the specific embodiments of the present invention with reference to the drawings.

[0033] Figure 1 is a schematic structural diagram of a cyclic cigarette box skin orientation correction device provided by an embodiment of the present invention;

[0034] Figure 2 is a front view of a second transmission mechanism;

[0035] Figure 3 is a top view of the second transmission mechanism;

[0036] Figure 4 is a flowchart of a cyclic cigarette box skin orientation correction method provided by an embodiment of the present invention.

[0037] Description of the reference numerals:

[0038] 1 - Horizontal conveyor belt 2 - Inclined conveyor belt 3 - Limit conveyor belt

[0039] 4 - Rotating platform 5 - Bracket 6 - Second transmission mechanism

[0040] 7 - Image acquisition mechanism 8 - Processor 9 - Display

[0041] 10 - First push rod 11 - First photoelectric sensor 12 - First lifting baffle

[0042] 13 - Second push rod 14 - Second photoelectric sensor 15 - Second lifting baffle

[0043] 16 - First tray 17 - Second tray 18 - Third tray

[0044] 19 Box skin Detailed implementation manners

[0045] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, the components of materials, numerical expressions and values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0046] The "first", "second", etc. used in the present disclosure do not denote any order, quantity or importance, but are only used to distinguish different parts. Words such as "including" or "comprising" mean that the elements before this word cover the elements listed after this word, and do not exclude the possibility of also covering other elements. "Left", "right", etc. are only used to represent relative position relationships, and when the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0047] In the present disclosure, when it is described that a specific component is located between a first component and a second component, there may or may not be an intermediate component between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without an intermediate component, or may not be directly connected to the other components but have an intermediate component.

[0048] All terms used in the present disclosure (including technical terms or scientific terms) have the same meaning as understood by those of ordinary skill in the art to which the present disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary such as should be construed to have a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such herein.

[0049] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be regarded as part of the specification.

[0050] As Figures 1 to 3 shown, an embodiment of the present invention provides a device for correcting the orientation of the box skin of a circulating cigarette box, which includes a first transmission mechanism (including the horizontal conveyor belt 1, the inclined conveyor belt 2, and the limit conveyor belt 3 mentioned below), a rotating mechanism (including the rotating platform 4, the bracket 5, and the motor mentioned below), a second transmission mechanism 6, an image acquisition mechanism 7, a processor 8, a first push rod 10, a second push rod 13, and a third push rod; wherein, one side of the rotating mechanism is docked with the first transmission mechanism; the second transmission mechanism 6 is docked with the other side of the rotating mechanism, and a first rejection area and a second rejection area are provided on the second transmission mechanism 6; the image acquisition mechanism 7 is arranged above the rotating mechanism for acquiring pictures of the box skin 19 on the rotating mechanism; the processor 8 is connected to the image acquisition mechanism 7; the first push rod 10 is used to push the box skin on the rotating mechanism onto the second transmission mechanism 6; the second push rod 13 is arranged on one side of the first rejection area; the third push rod is arranged on one side of the second rejection area.

[0051] During the working process, the box skin 19 of the circulating cigarette box to be detected can be transported forward through the first transmission mechanism. When a box skin is transported onto the rotating mechanism, the first transmission mechanism stops running briefly so that the image acquisition mechanism 7 can acquire the image of the box skin on the rotating mechanism and send the acquired image to the processor 8. The processor 8 can perform a homography match between the acquired measured image and a preset standard image to analyze whether the brand of the currently measured box skin is correct. If it is correct, it can analyze whether the detection surface of the currently measured box skin is the front. If it is the front, the angle that the current box skin needs to be corrected can be determined according to the key point coordinates obtained from the above homography match. According to this angle, the angle correction of the box skin can be achieved by rotating the rotating mechanism. Then, the box skin can be pushed onto the second transmission mechanism 6 through the first push rod 10 and transported to the subsequent workstations through the second transmission mechanism 6.

[0052] In addition, if it is analyzed that the detection surface of the currently measured box skin is the back, the angle that the current box skin needs to be corrected can still be determined according to the key point coordinates obtained from the above homography match. According to this angle, the angle correction of the box skin can be achieved by rotating the rotating mechanism. Then, after the first push rod 10 pushes the box skin onto the second transmission mechanism 6, the second transmission mechanism 6 can transport the box skin to the second rejection area, and the box skin with the corrected angle can be rejected and recycled from the second transmission mechanism 6 through the third push rod, so as to be flipped offline and then re - input into the transmission and use.

[0053] If it is analyzed that the brand of the current box skin to be measured is incorrect, the first push rod 10 directly pushes the box skin onto the second transmission mechanism 6, and the second transmission mechanism 6 conveys the box skin with incorrect brand to the first rejection area. The box skin with incorrect brand can be rejected and recycled from the second transmission mechanism 6 through the second push rod 13.

[0054] Thus, compared with the prior art, the circulating cigarette box skin orientation correction device provided by the embodiment of the present invention realizes the automatic identification and correction of the box skin orientation without manual participation, and at the same time realizes the rejection of the box skin with incorrect brand, saving labor and improving the correction accuracy.

[0055] Among them, the above docking may refer to the alignment of the positions of two components without contact, or may refer to the alignment of the positions of two components with contact at the same time. The above docking can realize the transmission of the box skin from one component to another component.

[0056] It can be understood that the image acquisition mechanism 7 may include a camera and a light source. The light source can provide sufficient light for the shooting area, and the camera can be an industrial camera.

[0057] Further, the device further includes a first lifting baffle 12 and a second lifting baffle 15. The first lifting baffle 12 is arranged between the first rejection area and the second rejection area, and the second lifting baffle 15 is arranged on the side of the second rejection area away from the first rejection area.

[0058] When the box skin with incorrect brand is conveyed to the first rejection area, the first lifting baffle 12 drops from above the second transmission mechanism 6 to prevent the box skin with incorrect brand from continuing to be conveyed forward. When the box skin with the detection surface being the reverse side is conveyed onto the second transmission mechanism 6, the first lifting baffle 12 remains above the second transmission mechanism 6 without dropping, so as to convey the box skin with the detection surface being the reverse side to the second rejection area. After the second lifting baffle 15 drops, it can prevent the box skin with the detection surface being the reverse side from continuing to be conveyed forward.

[0059] Further, the device further includes a first photoelectric sensor 11 and a second photoelectric sensor 14. The first photoelectric sensor 11 is arranged in the first rejection area, and the second photoelectric sensor 14 is arranged in the second rejection area.

[0060] When the case skin with the wrong brand is conveyed to the first rejection area, the first photoelectric sensor 11 becomes effective and sends the detected case skin in-place signal to the second electric push rod. The second electric push rod ejects the case skin with the wrong brand from the second transmission mechanism 6 according to this case skin in-place signal. In addition, when the case skin with the reverse detection surface passes the first photoelectric sensor 11, the first photoelectric sensor 11 becomes ineffective. And when the case skin with the reverse detection surface is conveyed to the second rejection area, the second photoelectric sensor 14 becomes effective and sends the detected case skin in-place signal to the third electric push rod to eject the current case skin with the reverse detection surface from the second transmission mechanism 6. When the case skin with the front detection surface passes the first rejection area or the second rejection area, both the first photoelectric sensor 11 and the second photoelectric sensor 14 are ineffective. At this time, both the second push rod 13 and the third push rod do not work.

[0061] Further, in order to intuitively know the quantities of the case skins with the front detection surface, the reverse detection surface or the wrong brand, the device may further include a display 9. The display 9 is connected to the processor 8, and the processor 8 can display the above quantities on the display 9.

[0062] Further, the rotating mechanism may specifically include a bracket 5, a rotating platform 4 and a motor. The rotating platform 4 is rotatably connected to the bracket 5. The fixed part of the motor is arranged on the bracket 5, and the driving part of the motor is connected to the rotating platform 4. Among them, the fixed part of the first push rod 10 can be arranged on the bracket 5.

[0063] Further, the first transmission mechanism may include a horizontal conveyor belt 1, an inclined conveyor belt 2 and a limiting conveyor belt 3. One end of the inclined conveyor belt 2 is connected to the horizontal conveyor belt 1, and the other end of the inclined conveyor belt 2 is docked with the rotating mechanism. The limiting conveyor belt 3 is arranged above the inclined conveyor belt 2 and maintains a preset distance from the inclined conveyor belt 2.

[0064] Among them, the distance between the inclined conveyor belt 2 and the limiting conveyor belt 3 can be slightly larger than the thickness of one case skin, and only one case skin is allowed to pass at the same time, so as to prevent the case skins from stacking.

[0065] Further, in order to facilitate the recycling of the case skins with the wrong brand, the front detection surface and the reverse detection surface, the device further includes a first tray 16, a second tray 17 and a third tray 18. The first tray 16 is docked with the first rejection area, the second tray 17 is docked with the second rejection area, and the third tray 18 is docked with the end of the second transmission mechanism 6 far from the rotating mechanism.

[0066] Among them, the third tray 18 is used to recycle the case skins with the detected surface being the reverse side after the angle correction. When the case skins on the third tray 18 are stacked to a certain height, the case skins on the third tray 18 can be integrally flipped to adjust the front and back sides, so that the orientations of the case skins after the turnover are consistent, and there is no need to individually correct and adjust them one by one through the rotating mechanism, thus improving the efficiency.

[0067] As Figure 4 shown, the embodiment of the present invention also provides a method for correcting the orientation of the case skin of a circulating cigarette case, which adopts the device for correcting the orientation of the case skin of a circulating cigarette case provided in any embodiment of the present invention. The method includes the following steps:

[0068] Step S1: Set a standard image in the processor according to the brand of the case skin to be detected.

[0069] Step S2: Transfer the case skin to be detected onto the rotating mechanism.

[0070] Step S3: Obtain the measured image of the case skin to be detected.

[0071] Step S4: Perform homography matching on the measured image and the standard image to obtain the coordinates and quantity of the successfully matched key point pairs.

[0072] Among them, step S4 specifically includes:

[0073] Step S41: Obtain a plurality of first key points on the standard image and a plurality of second key points on the measured image through the SIFT algorithm.

[0074] Step S42: Obtain the coordinates of the first key points and the coordinates of the second key points.

[0075] Step S42: Obtain the key point pairs formed after the first key points and the second key points are matched.

[0076] Step S43: Obtain the quantity of the key point pairs.

[0077] Step S5: Judge whether the quantity of the key point pairs is greater than a first preset value; if so, enter step S51. Among them, the first preset value can be 100.

[0078] Step S51: Judge whether the detected surface of the case skin to be detected is the front side; if so, enter step S511.

[0079] Step S511: Obtain the rotation correction angle of the current case skin according to the coordinates of the key point pairs.

[0080] Among them, step S511 specifically includes:

[0081] Step S5111: Obtain the centroid of the coordinates of the matched first key points and the coordinates of the second key points.

[0082] Step S5112: Translate the matched first key point coordinates and second key point coordinates with the centroid as the origin.

[0083] Step S5113: Calculate the angles between the lines connecting the matched first key point coordinates and second key point coordinates to the origin with respect to the coordinate axes respectively.

[0084] Step S5114: Calculate the average values of the quartiles of the two groups of angles respectively.

[0085] Step S5115: Calculate the difference between the two average values, which is the rotation correction angle.

[0086] Step S512: If the result of determining whether the detection surface of the box skin to be detected is the front is negative, transfer the box skin to be detected to the second rejection area and reject it through the third push rod.

[0087] Step S52: If the result of determining whether the number of key point pairs is greater than the first preset value is negative, then determine whether the number of key point pairs is greater than the second preset value and less than or equal to the first preset value; if so, enter Step S521. Herein, the second preset value can be 10.

[0088] Step S521: Transfer the box skin to be detected to the first rejection area and reject it through the second push rod.

[0089] In addition, if the number of key point pairs is less than the second preset value, re-acquire the measured image of the current box skin to be detected.

[0090] In this embodiment, if the number of key point pairs formed after the first key point and the second key point are matched is less than 10, it indicates that a complete image of the box skin has not been obtained, and at this time, the image of the box skin needs to be re-acquired.

[0091] Herein, the "front" and "back" are two opposite sides of the box skin respectively, and the specific front and back can be determined according to the actual situation.

[0092] The cyclic cigarette box skin orientation correction device and correction method provided by the embodiments of the present invention realize the automatic recognition and correction of the box skin orientation without manual participation, and at the same time realize the rejection of box skins with wrong brands, saving labor and improving the correction accuracy.

[0093] So far, the embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details well known in the art have not been described. Those skilled in the art can clearly understand how to implement the technical solutions disclosed herein based on the above description.

[0094] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or equivalent substitutions can be made for some technical features without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A device for correcting the orientation of the skin of a circulating cigarette box, characterized in that, it includes: A first transmission mechanism; A rotating mechanism, one side of the rotating mechanism is docked with the first transmission mechanism; A second transmission mechanism, the second transmission mechanism is docked with the other side of the rotating mechanism, and a first rejection area and a second rejection area are provided on the second transmission mechanism; An image acquisition mechanism, arranged above the rotating mechanism, for acquiring pictures of the skin of the box on the rotating mechanism; A processor, connected to the image acquisition mechanism; A first push rod, which is used to push the skin of the box on the rotating mechanism onto the second transmission mechanism; A second push rod, the second push rod is arranged on one side of the first rejection area; A third push rod, the third push rod is arranged on one side of the second rejection area; The rotating mechanism includes a bracket, a rotating platform and a motor, the rotating platform is rotatably connected to the bracket, the fixed part of the motor is arranged on the bracket, and the driving part of the motor is connected to the rotating platform; The first transmission mechanism includes a horizontal conveyor belt, an inclined conveyor belt and a limit conveyor belt, one end of the inclined conveyor belt is connected to the horizontal conveyor belt, and the other end of the inclined conveyor belt is docked with the rotating mechanism; The limit conveyor belt is arranged above the inclined conveyor belt and maintains a preset distance from the inclined conveyor belt; It also includes a first tray, a second tray and a third tray, the first tray is docked with the first rejection area, the second tray is docked with the second rejection area, and the third tray is docked with the end of the second transmission mechanism far from the rotating mechanism.

2. The device for correcting the orientation of the skin of a circulating cigarette box according to claim 1, characterized in that, it also includes a first lifting baffle and a second lifting baffle, the first lifting baffle is arranged between the first rejection area and the second rejection area, and the second lifting baffle is arranged on the side of the second rejection area far from the first rejection area.

3. The device for correcting the orientation of the skin of a circulating cigarette box according to claim 2, characterized in that, it also includes a first photoelectric sensor and a second photoelectric sensor, the first photoelectric sensor is arranged in the first rejection area, and the second photoelectric sensor is arranged in the second rejection area.

4. The device for correcting the orientation of the skin of a circulating cigarette box according to claim 1, characterized in that, it also includes a display, and the display is connected to the processor.

5. A method for correcting the orientation of the skin of a circulating cigarette box, characterized in that, using the device for correcting the orientation of the skin of a circulating cigarette box according to any one of claims 1-4, the method includes the following steps: Setting a standard image in the processor according to the brand of the box skin to be detected; Transmitting the box skin to be detected onto the rotating mechanism; Acquiring the measured image of the box skin to be detected; Performing homography matching on the measured image and the standard image to obtain the coordinates and quantity of the successfully matched key point pairs; Judging whether the quantity of the key point pairs is greater than a first preset value; If so, judging whether the detection surface of the box skin to be detected is the front; If so, obtaining the rotation correction angle of the current box skin according to the coordinates of the key point pairs; If the result of determining whether the inspection surface of the to-be-inspected box skin is the front is negative, the to-be-inspected box skin is conveyed to the second rejection area and rejected by the third push rod; If the result of determining whether the number of the key point pairs is greater than the first preset value is negative, then it is determined whether the number of the key point pairs is greater than the second preset value and less than or equal to the first preset value; If so, the to-be-inspected box skin is conveyed to the first rejection area and rejected by the second push rod.

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