Flexible package typesetting identification and defect elimination system and working method thereof

Abstract

The invention relates to the technical field of flexible package detection, and provides a flexible package typesetting recognition and defect elimination system, which comprises a typesetting recognition module, a defect recognition tracking module, an elimination module and a control module, and is characterized in that the typesetting recognition module comprises feature point matching typesetting, bisecting and folding typesetting and autonomous selection typesetting; the feature point matching type setting comprises a feature point extraction unit and a feature point matching unit, the rejecting module comprises a plurality of conveying channels, a first rejecting port and a second rejecting port, and the first rejecting port and the second rejecting port are sequentially formed in the conveying channels at intervals in the conveying direction of packaging bags; the first rejecting port is correspondingly provided with a first collecting bin, the second rejecting port is correspondingly provided with a second collecting bin, a product collecting bin is arranged at the rear end of the conveying channel, and the typesetting recognition module, the defect recognition tracking module and the rejecting module are all connected with the control module. The invention further discloses a working method of the flexible package typesetting recognition and defect elimination system.

Description

Technical Field

[0001] The present invention belongs to the technical field of soft package detection, and in particular relates to a soft package typesetting recognition and defect elimination system and a working method thereof. Background Art

[0002] At present, when the flexible packaging industry initially designs product layouts, it often designs double, triple, quad or quintuple layouts based on the equipment printing width, product size, bag making machine function, time cost and production efficiency, so that two, three, four or five bags can be cut out at the same time during the bag making process, which can save time, improve efficiency and save costs. However, for multi-printed products, due to the different types of bag making machines (three-side sealing bag making machines, bottom-attached bag making machines, center-sealing bag making machines or zipper bag making machines, etc.), the bag making machines fold or bend the rolls in different ways, and the corresponding relationship between multiple front sides and multiple back sides during the bag making process cannot be determined.

[0003] Moreover, most of them are single rejection devices. For multi-plate bag making, taking the three-plate layout design as an example, the bag making machine includes three channels. If there is a defective bag in the three-channel packaging bags, all three bags will be rejected, and the scrap rate will increase threefold. Some rejection devices can reject the defective bags in the three-channel packaging bags separately, and the other two-channel packaging bags will not be rejected. Although this can reduce the scrap rate, the two channels that are not rejected have one more bag at the rear-end packaging bag collection point than the one channel that is rejected, which will lead to inconsistent material collection quantities at the rear end, and manual supplement is required. If the number of rejections in one channel is large, manual supplement will waste a long time and may also cause errors. This not only increases the time cost, but also reduces production efficiency, and there is also the risk of customer complaints due to incorrect delivery quantities.

[0004] In order to solve the above technical problems, the present invention designs a soft packaging layout recognition and defect removal system and a working method thereof. Summary of the invention

[0005] The present invention provides a system for identifying and rejecting defective soft packaging layouts and a working method thereof, which can achieve separation of defective products from good products in the process of making bags with multiple plates of soft packaging, and make the quantity of products in the product collection bins corresponding to multiple transmission channels consistent, thereby avoiding manual supplementation, reducing production costs, and improving production efficiency. In the process of making bags with single plates, packaging bags with different degrees of defects can be classified to facilitate subsequent search and processing.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a soft packaging typesetting recognition and defect rejection system, comprising a typesetting recognition module, a defect recognition and tracking module, a rejection module and a control module, the typesetting recognition module comprising feature point matching typesetting, bisection and folding typesetting and autonomous selection typesetting, the feature point matching typesetting comprising a feature point extraction unit and a feature point matching unit, the rejection module comprising a plurality of conveying channels, a first rejection port and a second rejection port, the first rejection port and the second rejection port are arranged in sequence along the conveying direction of the packaging bag on the plurality of conveying channels, the first rejection port is correspondingly provided with a first collection bin, the second rejection port is correspondingly provided with a second collection bin, a product collection bin is provided at the rear end of the conveying channel, the typesetting recognition module, the defect recognition and tracking module and the rejection module are all connected to the control module.

[0007] Based on the above technical solution, the feature point matching typesetting also includes a visual detection unit and a mismatching point elimination unit.

[0008] On the basis of the above technical solution, the feature point extraction unit includes a scale-invariant feature transformation algorithm and an accelerated robust feature algorithm, and the mismatch point elimination unit includes a random sampling consistency algorithm.

[0009] Based on the above technical solution, the control module includes a counting unit and a control unit. The first collecting bin and the second collecting bin are both provided with a driving device. The driving device is connected to the counting unit and the control unit. The control unit can control the driving device to push out the packaging bags in the first collecting bin and the second collecting bin according to the numerical signal of the counting unit.

[0010] On the basis of the above technical solution, the rejection module also includes a first rejection mechanism and a second rejection mechanism. The number of the first rejection mechanisms is multiple, and the multiple first rejection mechanisms are all arranged above the first rejection port and correspond to the multiple transmission channels one by one. The second rejection mechanism is arranged above the second rejection port and corresponds to the multiple transmission channels.

[0011] Based on the above technical solution, a first guide plate is provided between the first rejection port and the first collecting bin, and the packaging bags rejected by the first rejection mechanism at the first rejection port can enter the first collecting bin along the first guide plate; a second guide plate is provided between the second rejection port and the second collecting bin, and the packaging bags rejected by the second rejection mechanism at the second rejection port can enter the second collecting bin along the second guide plate.

[0012] In a second aspect, the present invention provides a working method of a soft packaging typesetting recognition and defect rejection system, which is applied to a soft packaging typesetting recognition and defect rejection system as described in any one of the above embodiments, and includes the following steps: selecting a typesetting method for packaging bags; performing defect recognition and position tracking on a row of packaging bags corresponding to multiple conveying channels through a defect recognition and tracking module; in the case where there are defective packaging bags in the row of packaging bags, when the defective packaging bags reach a first rejection port position, a rejection signal is sent to a rejection module through a control module, and the rejection module rejects the defective packaging bags to a first collection bin; when packaging bags in the remaining conveying channels except the conveying channel where the defective packaging bags are located reach a second rejection port position, they are rejected to a second collection bin; in the case where there are no defective packaging bags in the row of packaging bags, the entire row of packaging bags enters a product collection bin at the rear end of the conveying channel.

[0013] On the basis of the above technical scheme, the layout method of the packaging bag is selected, including: when the feature point matching layout method is selected, the front and back images are collected by the visual detection unit; the feature points of the collected images are extracted by using the scale-invariant feature transformation algorithm and the accelerated robust feature algorithm; the feature descriptors of the areas around the feature points are calculated, and the matching of the feature points of the front image with the corresponding feature points of the back image is determined by comparing the similarity of the descriptors; and the mismatched points are eliminated by using the random sampling consistency algorithm.

[0014] Based on the above technical solution, the working method of the soft packaging layout recognition and defect removal system also includes: when the number of defective packaging bags in the first collection bin reaches a first preset value, the defective packaging bags are discharged from the first collection bin; when the number of packaging bags in the second collection bin reaches a second preset value, the packaging bags are discharged from the second collection bin.

[0015] On the basis of the above technical scheme, when only one of the multiple conveying channels is working, in the case that there are defective packaging bags in the row of packaging bags, when the defective packaging bags reach the first rejection port position, a rejection signal is sent to the rejection module through the control module, and the rejection module rejects the defective packaging bags to the first collection bin, including: in the case that there are defective packaging bags in the row of packaging bags, the defect degree of the defective packaging bags is identified by the defect identification and tracking module; in the case that the defect degree of the packaging bags reaches the first defect degree, when the defective packaging bags reach the first rejection port position, a first rejection signal is sent to the rejection module through the control module, and the rejection module rejects the defective packaging bags to the first collection bin; in the case that the defect degree of the packaging bags reaches the second defect degree, when the defective packaging bags reach the second rejection port position, a second rejection signal is sent to the rejection module through the control module, and the rejection module rejects the defective packaging bags to the second collection bin, wherein the second defect degree is greater than the first defect degree.

[0016] Compared with the related art, the beneficial effects of the present invention are as follows: By setting the layout recognition module, the layout method of the front and back of the packaging bag is selected. The layout method can be feature point matching layout, bisection and folding layout or self-selected layout. When the layout method is feature point matching layout, the feature points of the front and back of the packaging bag are extracted by the feature point extraction unit. The feature points can be specific graphic elements in the pattern or boundary points of an area with strong color contrast. The feature points of the front image are matched with the corresponding feature points of the back image by the feature point matching unit to complete the layout. The layout method can also be bisection and folding layout or self-selected layout, which increases the scope of use of the system and is suitable for customers with different layout requirements.

[0017] The defects of the packaging bags are identified and their positions are tracked through the defect identification and tracking module. When there are no defective packaging bags in the same row of packaging bags corresponding to multiple conveying channels, the packaging bags in this row are all conveyed to the product collection bin at the rear end of the conveying channel. If there is a defective packaging bag in the same row of packaging bags, the defective packaging bags and the remaining packaging bags in the same row can be respectively rejected to the first collection bin and the second collection bin by setting the first rejection port and the second rejection port in the conveying channel. This realizes the separation of waste products and good products without affecting the number of packaging bags in the product collection bin, so that the number of packaging bags in the product collection bin corresponding to multiple conveying channels is consistent. Compared with the related technology, it can avoid the link of manual number supplement, reduce production costs and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of a soft packaging typesetting recognition and defect rejection system provided by the present invention; Figure 2 It is a structural schematic diagram of another soft packaging typesetting recognition and defect rejection system provided by the present invention; Figure 3 It is a flow chart of a working method of a soft packaging typesetting recognition and defect rejection system provided by the present invention; Figure 4-Figure 15 These are 12 types of bag making layout forms to which the working method of the soft packaging layout recognition and defect rejection system provided by the present invention is applicable.

[0020] In the figure: 1, rejection module; 11, transmission channel; 12, first rejection port; 121, first collection bin; 122, first rejection mechanism; 13, second rejection port; 131, second collection bin; 132, second rejection mechanism. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and examples: Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] Combination Figure 1 and Figure 2 As shown, the embodiment of the present disclosure provides a soft packaging typesetting recognition and defect rejection system, including a typesetting recognition module, a defect recognition and tracking module, a rejection module 1 and a control module, the typesetting recognition module includes feature point matching typesetting, bisection and folding typesetting and autonomous selection typesetting, the feature point matching typesetting includes a feature point extraction unit and a feature point matching unit, the rejection module 1 includes a plurality of conveying channels 11, a first rejection port 12 and a second rejection port 13, the first rejection port 12 and the second rejection port 13 are sequentially arranged in the plurality of conveying channels 11 along the conveying direction of the packaging bag, the first rejection port 12 is correspondingly provided with a first collection bin 121, the second rejection port 13 is correspondingly provided with a second collection bin 131, a product collection bin is provided at the rear end of the conveying channel 11, the typesetting recognition module, the defect recognition and tracking module and the rejection module 1 are all connected to the control module.

[0025] The flexible packaging typesetting recognition and defect removal system provided by the embodiment of the present disclosure is adopted. By setting a typesetting recognition module, the typesetting method of the front and back sides of the packaging bag is selected. The typesetting method can be feature point matching typesetting, bisection and folding typesetting or self-selected typesetting. When the typesetting method is feature point matching typesetting, the feature points of the front and back sides of the packaging bag are extracted by a feature point extraction unit. The feature points can be specific graphic elements in the pattern or boundary points of an area with strong color contrast. The feature points of the front image are matched with the feature points of the corresponding back image by a feature point matching unit to complete the typesetting. The typesetting method can also be bisection and folding typesetting or self-selected typesetting, thereby increasing the scope of use of the system and being suitable for customers with different typesetting method requirements.

[0026] The defects of the packaging bags are identified and their positions are tracked through the defect identification and tracking module. When there are no defective packaging bags in the same row of packaging bags corresponding to multiple conveying channels 11, the packaging bags in this row are all conveyed to the product collection bin at the rear end of the conveying channel 11. If there is a defective packaging bag in the same row of packaging bags, the first rejection port 12 and the second rejection port 13 are set in the conveying channel 11, so that the defective packaging bags in the same row and the remaining packaging bags can be respectively rejected to the first collection bin 121 and the second collection bin 131, thereby realizing the separation of waste products from good products without affecting the number of packaging bags in the product collection bin, so that the number of packaging bags in the product collection bin corresponding to multiple conveying channels 11 is consistent. Compared with the related technology, it can avoid the link of manual number supplement, reduce production costs and improve production efficiency.

[0027] When only one conveying channel 11 among multiple conveying channels 11 is working, that is to say, there is no need to consider the problem of inconsistent number of packaging bags in the product collection bin. If it is determined that a packaging bag is defective, the defect degree of the packaging bag is further determined, and the defect degree includes a first defect degree and a second defect degree. When the defect degree of the defective packaging bag reaches the first defect degree, the first rejection mechanism 122 rejects the defective packaging bag to the first collection bin 121 when the defective packaging bag reaches the first rejection port 12. When the defect degree of the defective packaging bag reaches the second defect degree, the rejection mechanism rejects the defective packaging bag to the second collection bin 131 when the defective packaging bag reaches the second rejection port 13. In this way, defective packaging bags with different defect degrees can be classified, and the staff can understand the quality distribution of the packaging bags more clearly, and perform subsequent processing according to the defect degree of the packaging bags.

[0028] Based on the above technical solution, the feature point matching typesetting further includes a visual detection unit and a mismatch point elimination unit. Specifically, the visual detection unit can be a high-speed line scanning camera or other types of cameras.

[0029] On the basis of the above technical solution, the feature point extraction unit includes a scale-invariant feature transformation algorithm and an accelerated robust feature algorithm, and the mismatch point elimination unit includes a random sampling consistency algorithm.

[0030] When performing feature point matching typesetting, the visual inspection unit first collects images based on a high-speed line scan camera or other type of camera, and extracts feature points from the collected front and back images. For printed patterns, these feature points can be specific graphic elements in the pattern (such as the corner points of the trademark, the center of a specific pattern element, etc.) or boundary points of areas with strong color contrast. The scale-invariant feature transformation algorithm and the accelerated robust feature algorithm are used to extract feature points, which can effectively extract feature points at different scales and rotation states.

[0031] To match the feature points of the front image with the feature points of the corresponding back image, a descriptor-based matching method may be used, by calculating feature descriptors of the area surrounding the feature points (eg, scale-invariant feature transform descriptors), and then determining matching point pairs by comparing the similarity of the descriptors.

[0032] For possible mismatched points, the random sampling consensus algorithm can be used to eliminate them. The random sampling consensus algorithm randomly selects a set of matching point pairs to calculate the transformation model (such as the affine transformation model), and then determines whether other point pairs are consistent with this model. After multiple iterations, the optimal transformation model and correct matching point pairs are obtained.

[0033] Based on the above technical solution, the control module includes a counting unit and a control unit. The first collecting bin 121 and the second collecting bin 131 are both provided with a driving device. The driving device is connected to the counting unit and the control unit. The control unit can control the driving device to push out the packaging bags in the first collecting bin 121 and the second collecting bin 131 according to the numerical signal of the counting unit.

[0034] The setting of the counting unit can monitor the number of waste products and good products in the first collecting bin 121 and the second collecting bin 131. When the value of the counting unit reaches the target value, a signal can be sent to the control unit. After receiving the signal, the control unit will control the driving device to push out the packaging bags that have reached the target number in the first collecting bin 121 or the second collecting bin 131. There is no need for manual counting in the future, which reduces manual operations and saves time.

[0035] Based on the above technical solution, the rejection module 1 also includes a first rejection mechanism 122 and a second rejection mechanism 132. The number of the first rejection mechanisms 122 is multiple, and the multiple first rejection mechanisms 122 are all arranged above the first rejection port 12 and correspond to the multiple channels one by one. The second rejection mechanism 132 is arranged above the second rejection port 13 and corresponds to the multiple transmission channels 11.

[0036] Specifically, taking three conveying channels 11 as an example, including the first conveying channel 11, the second conveying channel 11 and the third conveying channel 11, the number of the first rejection mechanisms 122 is three, which are respectively arranged corresponding to the three conveying channels 11, and the number of the second rejection mechanisms 132 is one, and the second rejection mechanism 132 is arranged corresponding to the first conveying channel 11, the second conveying channel 11 and the third conveying channel 11, to ensure that after the first rejection mechanism 122 rejects the defective packaging bags, the second rejection mechanism 132 can reject all the remaining packaging bags into the second collection bin 131.

[0037] It can be understood that the number of the second rejection mechanisms 132 can also be two, one of the second rejection mechanisms 132 is set corresponding to the first conveying channel 11 and part of the second conveying channel 11, and the other second rejection mechanism 132 is set corresponding to the other part of the second conveying channel 11 and the third conveying channel 11. When there are defects in the packaging bags corresponding to the first conveying channel 11 in the same row of packaging bags, it is only necessary to start the first rejection mechanism 122 corresponding to the first transmission channel and the second rejection mechanism 132 corresponding to the second and third conveying channels 11, which can reduce energy consumption and reduce costs to a certain extent.

[0038] Optionally, the rejection forms of the first rejection mechanism 122 and the second rejection mechanism 132 can be pressure plate rejection, flip rejection, air blowing rejection or push-pull rejection. The present application does not limit the specific rejection forms of the first rejection mechanism 122 and the second rejection mechanism 132, as long as the rejection effect can be achieved.

[0039] On the basis of the above technical solution, a first guide plate is provided between the first rejection port 12 and the first collecting bin 121, and the packaging bags rejected by the first rejection mechanism 122 at the first rejection port 12 can enter the first collecting bin 121 along the first guide plate; a second guide plate is provided between the second rejection port 13 and the second collecting bin 131, and the packaging bags rejected by the second rejection mechanism 132 at the second rejection port 13 can enter the second collecting bin 131 along the second guide plate.

[0040] The arrangement of the first guide plate and the second guide plate enables the packaging bags rejected at the first rejection port 12 and the second rejection port 13 to enter the first collection bin 121 and the second collection bin 131 more smoothly.

[0041] Combination Figure 3As shown, the embodiment of the present disclosure provides a working method of a soft packaging layout recognition and defect removal system, which is applied to the soft packaging layout recognition and defect removal system as described in any one of the above embodiments, and includes the following steps: S301, selecting the layout mode of the packaging bag; S302, performing defect recognition and position tracking on a row of packaging bags corresponding to the plurality of conveying channels 11 through a defect recognition and tracking module; S303, when there are defective packaging bags in the row of packaging bags, when the defective packaging bags reach the first rejection port 12, the control module sends a rejection signal to the rejection module 1, and the rejection module 1 rejects the defective packaging bags to the first collection bin 121; S304, when the packaging bags in the conveying channel 11 other than the conveying channel 11 where the defective packaging bag is located reach the position of the second rejection port 13, they are rejected to the second collection bin 131; S305 , when there are no defective packaging bags in the row of packaging bags, the entire row of packaging bags enters the product collecting bin at the rear end of the conveying channel 11 .

[0042] First, the layout recognition module is set to identify the layout of the front and back of the packaging bag. The layout method can be feature point matching layout, folding layout or self-selected layout, which increases the scope of use of the system and is suitable for customers with different layout requirements. Then, the defect recognition and tracking module is used to identify the defects of the packaging bag and track the position. When there are no defective packaging bags in the same row of packaging bags corresponding to multiple conveying channels 11, the packaging bags in this row are all conveyed to the product collection bin at the rear end of the conveying channel 11. If there is a defective packaging bag in the same row of packaging bags, the first rejection port 12 and the second rejection port 13 are set in the conveying channel 11, so that the defective packaging bags in the same row and the remaining packaging bags can be respectively rejected to the first collection bin 121 and the second collection bin 131, so as to separate the waste products from the good products without affecting the number of packaging bags in the product collection bin, so that the number of packaging bags in the product collection bin corresponding to the multiple conveying channels 11 is consistent. Compared with the related technology, it can avoid the link of manual supplement, reduce the production cost and improve the production efficiency.

[0043] On the basis of the above technical scheme, the layout method of the packaging bag is selected, including: when the feature point matching layout method is selected, the front and back images are collected by the visual detection unit; the feature points of the collected images are extracted by using the scale-invariant feature transformation algorithm and the accelerated robust feature algorithm; the feature descriptors of the areas around the feature points are calculated, and the matching of the feature points of the front image with the corresponding feature points of the back image is determined by comparing the similarity of the descriptors; and the mismatched points are eliminated by using the random sampling consistency algorithm.

[0044] Based on the above technical solution, the working method of the soft packaging layout recognition and defect removal system also includes: when the number of defective packaging bags in the first collecting bin 121 reaches a first preset value, the defective packaging bags are discharged from the first collecting bin 121; when the number of packaging bags in the second collecting bin 131 reaches a second preset value, the packaging bags are discharged from the second collecting bin 131.

[0045] On the basis of the above technical scheme, when only one conveying channel 11 among multiple conveying channels 11 is working, in the case that there are defective packaging bags in the row of packaging bags, when the defective packaging bags reach the position of the first rejection port 12, a rejection signal is sent to the rejection module 1 through the control module, and the rejection module 1 rejects the defective packaging bags to the first collection bin 121, including: in the case that there are defective packaging bags in the row of packaging bags, the defect degree of the defective packaging bags is identified through the defect identification and tracking module; in the case that the defect degree of the packaging bags reaches the first defect degree, when the defective packaging bags reach the position of the first rejection port 12, a first rejection signal is sent to the rejection module 1 through the control module, and the rejection module 1 rejects the defective packaging bags to the first collection bin 121; in the case that the defect degree of the packaging bags reaches the second defect degree, when the defective packaging bags reach the position of the second rejection port 13, a second rejection signal is sent to the rejection module 1 through the control module, and the rejection module 1 rejects the defective packaging bags to the second collection bin 131, wherein the second defect degree is greater than the first defect degree.

[0046] When only one of the multiple conveying channels 11 is working, that is to say, there is no need to consider the problem of inconsistent number of packaging bags in the product collection bin, at this time, a dual defect degree is set in the defect identification and tracking module, including a first defect degree and a second defect degree. When the defect degree of the defective packaging bag reaches the first defect degree, the rejection module 1 rejects the defective packaging bag to the first collection bin 121 when the defective packaging bag reaches the first rejection port 12. When the defect degree of the defective packaging bag reaches the second defect degree, the rejection module 1 rejects the defective packaging bag to the second collection bin 131 when the defective packaging reaches the second rejection port 13. When the packaging bag does not have defects, the packaging bag is conveyed to the product collection bin at the rear end. In this way, defective packaging bags with different defect degrees can be classified, and the staff can understand the quality distribution of the packaging bags more clearly, and perform subsequent processing according to the defect degree of the packaging bags.

[0047] Specifically, the working method of the soft packaging layout recognition and defect removal system of the present invention is applicable to various bag layout forms, such as Figure 4-15 As shown, A is the front side of the packaging bag, B is the back side of the packaging bag, and the vertical line is the folding position of the packaging bag during bag making. Figure 4-9 It is a suitable double-plate bag making layout method. Figure 10-13 It is suitable for three-plate bag making layout. Fig.14 and Fig.15 The above is an example of the applicable four-plate bag making layout method. Figure 4-15 Typesetting methods that are close to or similar to the typesetting methods in Chinese may also be applicable, and there is no limitation here.

[0048] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications made based on the present invention belong to the scope of protection claimed by the present invention.

Claims

1. A soft packaging layout recognition and defect removal system, characterized in that: It includes a typesetting recognition module, a defect recognition and tracking module, a rejection module and a control module. The typesetting recognition module includes feature point matching typesetting, bisection and folding typesetting and autonomous selection typesetting. The feature point matching typesetting includes a feature point extraction unit and a feature point matching unit. The rejection module includes multiple conveying channels, a first rejection port and a second rejection port. The first rejection port and the second rejection port are sequentially arranged in multiple conveying channels along the conveying direction of the packaging bag. The first rejection port is correspondingly provided with a first collection bin, and the second rejection port is correspondingly provided with a second collection bin. A product collection bin is provided at the rear end of the conveying channel. The typesetting recognition module, the defect recognition and tracking module and the rejection module are all connected to the control module.

2. The flexible packaging layout recognition and defect removal system according to claim 1 is characterized in that: The feature point matching typesetting also includes a visual detection unit and a mismatch point elimination unit.

3. The flexible packaging layout recognition and defect removal system according to claim 2 is characterized in that: The feature point extraction unit includes a scale-invariant feature transformation algorithm and an accelerated robust feature algorithm, and the mismatch point elimination unit includes a random sampling consistency algorithm.

4. The flexible packaging layout recognition and defect removal system according to claim 1, characterized in that: The control module includes a counting unit and a control unit. The first collecting bin and the second collecting bin are both provided with a driving device. The driving device is connected to the counting unit and the control unit. The control unit can control the driving device to push out the packaging bags in the first collecting bin and the second collecting bin according to the numerical signal of the counting unit.

5. The flexible packaging layout recognition and defect removal system according to any one of claims 1 to 4, characterized in that: The rejection module also includes a first rejection mechanism and a second rejection mechanism. The number of the first rejection mechanisms is multiple, and the multiple first rejection mechanisms are all arranged above the first rejection port and correspond to the multiple transmission channels one by one. The second rejection mechanism is arranged above the second rejection port and corresponds to the multiple transmission channels.

6. The flexible packaging layout recognition and defect removal system according to claim 5, characterized in that: A first guide plate is provided between the first rejection port and the first collecting bin, and the packaging bags rejected by the first rejection mechanism at the first rejection port can enter the first collecting bin along the first guide plate. A second guide plate is provided between the second rejection port and the second collecting bin, and the packaging bags rejected by the second rejection mechanism at the second rejection port can enter the second collecting bin along the second guide plate.

7. A working method of a soft packaging layout recognition and defect rejection system, applied to the soft packaging layout recognition and defect rejection system as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Choose the packaging bag layout; Defect recognition and position tracking of a row of packaging bags corresponding to a plurality of conveying channels are performed through a defect recognition and tracking module; In the case where there are defective packaging bags in the row of packaging bags, when the defective packaging bags reach the first rejection port position, a rejection signal is sent to the rejection module through the control module, and the rejection module rejects the defective packaging bags to the first collection bin; When the packaging bags in the other conveying channels except the conveying channel where the defective packaging bags are located reach the second rejection port, they are rejected to the second collection bin; In the case that there are no defective packaging bags in the row of packaging bags, the entire row of packaging bags enters the product collecting bin at the rear end of the conveying channel.

8. The working method of the flexible packaging layout recognition and defect removal system according to claim 7, characterized in that: The layout of the selected packaging bag includes: When the feature point matching typesetting method is selected, the front and back images are collected by the visual inspection unit; The scale-invariant feature transformation algorithm and the accelerated robust feature algorithm are used to extract feature points from the collected images; Calculate the feature descriptors of the area around the feature points, and determine the matching between the feature points of the front image and the corresponding feature points of the back image by comparing the similarity of the descriptors; A random sampling consensus algorithm is used to remove mismatched points.

9. The working method of the flexible packaging layout recognition and defect removal system according to claim 7, characterized in that: Also includes: When the number of defective packaging bags in the first collecting bin reaches a first preset value, the defective packaging bags are discharged from the first collecting bin; When the number of packaging bags in the second collecting bin reaches a second preset value, the packaging bags are discharged from the second collecting bin.

10. The working method of the flexible packaging layout recognition and defect removal system according to claim 7, characterized in that: When only one of the multiple conveying channels is working, in the case where there are defective packaging bags in the row of packaging bags, when the defective packaging bags reach the first rejection port position, sending a rejection signal to the rejection module through the control module, and the rejection module rejecting the defective packaging bags to the first collection bin includes: In the case that there are defective packaging bags in the row of packaging bags, the defect degree of the defective packaging bags is identified by the defect identification and tracking module; When the defect degree of the packaging bag reaches the first defect degree, when the defective packaging bag reaches the first rejection port position, the control module sends a first rejection signal to the rejection module, and the rejection module rejects the defective packaging bag to the first collection bin; When the defect degree of the packaging bag reaches the second defect degree, when the defective packaging bag reaches the second rejection port position, the control module sends a second rejection signal to the rejection module, and the rejection module rejects the defective packaging bag to the second collection bin, wherein the second defect degree is greater than the first defect degree.

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