Test tools, systems, and corresponding methods for evaluating the closure performance of cigarette hard packs.

Abstract

This invention discloses a testing tool, system, and method for evaluating the closure performance of cigarette hard packs. The testing tool includes: a lid opening angle stabilizing component, a cigarette pack fixing component, and an opening angle / height measuring component. The lid opening angle stabilizing component is located on the back of the cigarette pack and is an outwardly inclined right-angled surface with its right-angled edge in close contact with the back of the cigarette pack. After the lid is opened, the top of the lid contacts the inclined surface. The cigarette pack fixing component is a U-shaped double right-angled structure that covers the bottom and two opposite sides of the cigarette pack to fix it in place. The opening angle / height measuring component is used to measure the angle of the slit on the side of the lid or the height of the lid exceeding the height of the pack. This invention provides a testing tool, system, and method for evaluating the closure performance of cigarette hard packs, enabling precise quantitative evaluation of the lid slit. Using the cigarette hard pack closure performance testing tool for sample pretreatment further avoids errors caused by human operation.

Description

Technical Field

[0001] This invention relates to the field of cigarette manufacturing technology, and in particular to a testing tool, system, and corresponding method for evaluating the closure performance of cigarette hard packs. Background Technology

[0002] With the upgrading of consumption, consumers have increasingly higher requirements for the quality of cigarette products and their packaging. Among them, hard-pack cigarettes are the mainstream packaging form. Consumers need to repeatedly open and close the box lid when taking out cigarettes. If after several openings and closings, a narrow gap appears between the box lid and the box body, and the box is not completely closed, it will cause some consumers' dissatisfaction and may even affect the smoking experience.

[0003] Currently, there are no national, industry, or enterprise standards that specify the closure performance of cigarette hard packs. How to evaluate the closure performance of cigarette hard packs and meet consumer demand has become an urgent problem to be solved.

[0004] Therefore, there is an urgent need for a testing tool, system, and corresponding method to evaluate the closure performance of cigarette hard packs. Summary of the Invention

[0005] The purpose of this invention is to provide a testing tool, system, and corresponding method for evaluating the closure performance of cigarette hard packs, in order to solve the problems in the prior art and to accurately quantify the quality defects of the "opening" of cigarette packs.

[0006] This invention provides a test tool for evaluating the closure performance of cigarette hard packs, comprising:

[0007] The cigarette pack includes a lid opening angle stabilizing component, a cigarette pack fixing component, and an opening angle / height measuring component. The lid opening angle stabilizing component is located on the back of the cigarette pack and is an outwardly inclined right-angled surface. The right-angled side of the stabilizing component is in close contact with the back of the cigarette pack. After the lid is opened, the top of the lid contacts the inclined surface of the stabilizing component, ensuring a consistent and stable opening angle for each test. The cigarette pack fixing component is a U-shaped double right-angle structure that covers the bottom and two opposite sides of the cigarette pack for securing it. The opening angle / height measuring component measures the angle of the side slit of the lid or the height of the lid exceeding the body of the pack after the lid has been opened a preset number of times according to test requirements.

[0008] In the test tool for evaluating the closing performance of cigarette hard packs as described above, preferably, the height of the right-angle side of the lid opening and closing angle stabilizing component is consistent with the length of the back of the cigarette pack, and the length of the back of the cigarette pack is determined by the die-cut dimensions of the cigarette pack.

[0009] In the test tool for evaluating the closing performance of cigarette hard packs as described above, preferably, the angle between the inclined surface and the right-angled surface of the lid opening angle stabilizing component is consistent with the angle between the back of the cigarette pack and the top surface of the cigarette pack after opening, and the angle between the back of the cigarette pack and the top surface of the cigarette pack after opening is determined by the die-cutting dimensions of the cigarette pack.

[0010] In the test tool for evaluating the closing performance of cigarette hard packs as described above, preferably, the widths of the two right-angled surfaces and one inclined surface of the lid opening angle stabilizing component are consistent with the width of the bottom of the cigarette pack, and the width of the bottom of the cigarette pack is determined by the die-cut dimensions of the cigarette pack.

[0011] The test tool for evaluating the closure performance of cigarette hard packs as described above, wherein preferably, the opening / closing angle / height measuring component includes a ruler or a protractor.

[0012] The present invention also provides a pretreatment method for a cigarette hard pack using the above-mentioned test tool for evaluating the closure performance of cigarette hard packs, comprising:

[0013] Remove the pull cord and BOPP film from the cigarette box sample containing the cigarettes. Open the cigarette box lid, remove the inner lining paper, and close the lid. Place the back of the cigarette box sample against the right-angle side of the lid opening and closing angle stabilizing component to fix the cigarette box in place.

[0014] Open the lid until the top of the lid contacts the inclined surface of the lid opening angle stabilizing component, then close the lid.

[0015] After repeating the box opening process a preset number of times, the angle of the slit on the side of the box lid or the height of the box lid exceeding the box body is measured by the opening / closing angle / height measuring component.

[0016] The present invention also provides a system for evaluating the closing performance of cigarette hard packs, comprising the aforementioned testing tool for evaluating the closing performance of cigarette hard packs, a sample stage, a scanning system, a data acquisition module, a processing module, and a visualization module. The data acquisition module is connected to the scanning system and the processing module, respectively, and the processing module is also connected to the visualization module.

[0017] The sample stage is used to place cigarette pack samples;

[0018] The scanning system is used to emit lasers toward the cigarette pack sample;

[0019] The data acquisition module is used to acquire images of the opening surface of the cigarette pack, obtain several composite image signals, and receive laser signals reflected by the cigarette pack sample to obtain laser contour information;

[0020] The processing module is used to process the composite image signal of the cigarette pack sample to obtain the outline information of the cigarette pack, and obtain the opening position coordinate information of the cigarette pack based on the outline information of the cigarette pack; and to process the laser signal of the opening position coordinate to obtain the flatness parameter information of the surface at the opening position coordinate, and to compare the obtained flatness parameter information with the standard parameters in the database to obtain the evaluation result of the closure quality performance of the hard box small box lid.

[0021] The visualization module is used to output the evaluation results of the closure quality performance of the hard box and small box in a visual form.

[0022] The system for evaluating the closure performance of cigarette hard packs as described above, wherein, preferably, the scanning system includes a laser for emitting laser light onto the cigarette pack to be tested placed on the sample stage;

[0023] The data acquisition module includes a CCD camera and a receiver. The CCD camera is used to acquire images of the opening surface of the cigarette pack to obtain several composite image signals. The receiver is used to receive laser signals reflected from the cigarette pack sample to obtain laser contour information.

[0024] The processing module includes a data acquisition card and a processor. The data acquisition card is used to perform analog-to-digital conversion on the composite image signal and laser contour information acquired by the data acquisition module to obtain a digital signal. The processor is used to convert and process the digital signal corresponding to the composite image signal to obtain the contour information of the cigarette pack, and obtain the opening position coordinate information of the cigarette pack based on the contour information. The processor also analyzes the digital signal corresponding to the laser signal at the opening coordinate to obtain the flatness parameter information of the surface at the opening position coordinate, and compares the obtained flatness parameter information with the standard parameters in the database to obtain the closing quality performance evaluation result of the hard box small box lid. The closing quality performance evaluation result of the hard box small box lid includes at least one of the length, width and height of the slit at the opening of the cigarette pack.

[0025] The present invention also provides a method for evaluating the closure performance of a cigarette hard pack, comprising the following steps: placing an unopened standard hard pack containing cigarettes on a sample stage; emitting a laser on the open surface area of ​​the standard hard pack using a scanning system; acquiring an image of the open surface area of ​​the standard hard pack using a data acquisition module to obtain a composite image signal of the main body and lid of the standard hard pack; and receiving the laser signal reflected by the standard hard pack to obtain laser contour information.

[0026] The processing module converts and processes the composite image signal to locate the opening of the cigarette box, obtains the coordinate information of the opening position of the standard hard box, and automatically analyzes the flatness parameter information of the surface at the opening position coordinate position based on the contour information to obtain the standard flatness parameter of the small box surface in the database.

[0027] The cigarette pack containing the cigarettes, pre-treated using a cigarette pack closure performance testing tool, is placed on the sample stage. A laser is emitted from the opening area of ​​the cigarette pack through a scanning system, and an image of the opening surface of the cigarette pack is acquired through a data acquisition module to obtain a composite image signal of the main body and lid of the cigarette pack. The laser signal reflected by the cigarette pack is also received to obtain laser contour information.

[0028] After receiving the composite image signal, the processing module converts it into a digital signal via the data acquisition card A / D converter. The signal is then processed and analyzed in the processor. The opening of the cigarette pack is located to obtain the coordinate information of the opening position. Based on the position information, the slit part of the lid is identified. The laser contour information of the slit part of the lid is analyzed to obtain the surface flatness parameters. The length, width and height of the slit are measured.

[0029] The test data corresponding to the test hard pack is compared with the standard parameters corresponding to the standard hard pack, and the test results are generated. The test results are output through the visualization module to obtain the closure performance system data of the cigarette hard pack.

[0030] The system data of the closing performance of the cigarette hard pack is entered into the performance evaluation system for comparison, and a performance evaluation of the closing quality of the hard pack lid is generated. The test results are output through the visualization module.

[0031] The method for evaluating the closing performance of cigarette hard packs as described above, preferably, involves pre-processing the hard pack containing cigarettes using a cigarette hard pack closing performance testing tool. This pre-processing includes: using an automatic cigarette box lid opening and closing device to pre-process the hard pack; manually opening the lid of the hard pack to be tested; tearing off the inner lining paper; repeatedly opening and closing the lid a preset number of times; and the gap formed by the natural rebound of the lid after it is closed is the lid slit.

[0032] In the process of locating the opening of the cigarette pack, the principle of structural laser is adopted. Based on the image pixel coordinates and the system light plane parameters, a corresponding mathematical model is established to calculate the spatial coordinate values.

[0033] In the process of generating the performance evaluation of the lid closure quality of the hard-pack small box, a performance evaluation system is established by conducting several tests on standard hard-pack small boxes of the same brand. The database confidence interval of the lid slit parameters is obtained, and the qualified product parameter interval is generated. The performance evaluation of the lid closure quality of the hard-pack small box is carried out based on whether the test results exceed the interval range.

[0034] This invention provides a testing tool, system, and corresponding method for evaluating the closure performance of cigarette hard packs. It can accurately quantify the evaluation of the lid slit. The cigarette hard pack closure performance testing tool is used to pre-process the test sample to further avoid errors caused by human operation. During the testing process, the test results are quickly obtained by comparing with standard parameters. Compared with the manual slit judgment method that mainly relies on visual inspection and measurement, it has higher accuracy and avoids problems such as inconsistent judgment scales and empirical and individualized testing methods. Attached Figure Description

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described below with reference to the accompanying drawings, wherein:

[0036] Figure 1 A schematic diagram of the structure of the test tool provided by the present invention for evaluating the closing performance of a cigarette hard pack in an unopened state;

[0037] Figure 2 A schematic diagram of the structure of the test tool provided by the present invention for evaluating the closing performance of a cigarette hard pack in the open state;

[0038] Figure 3 A schematic diagram of an embodiment of the testing tool provided by the present invention for evaluating the closing performance of a cigarette hard pack when measuring the slit in the lid;

[0039] Figure 4 A flowchart illustrating an embodiment of the pretreatment method for cigarette hard packs provided by the present invention;

[0040] Figure 5 This is a structural block diagram of the system for evaluating the closure performance of cigarette hard packs provided by the present invention;

[0041] Figure 6 A flowchart of a method for evaluating the closure performance of a cigarette hard pack provided by the present invention;

[0042] Figure 7 A logic diagram of the method for evaluating the closure performance of cigarette hard packs provided by the present invention;

[0043] Figure 8 A schematic diagram of an image scanned by a CCD camera;

[0044] Figure 9 This is a schematic diagram of the laser receiving data.

[0045] Reference numerals: 1-Lid opening / closing angle stabilizing component, 2-Cigarette pack fixing component, 3-Opening / closing angle / height measuring component, 4-Cigarette box. Detailed Implementation

[0046] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0047] The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Terms such as “including” or “contains” mean that the element preceding the term encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as “above” and “below” are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0048] In this disclosure, when a specific component is described as being located between a first component and a second component, an intermediary component may or may not be present between the specific component and the first or second component. When a specific component is described as connecting to other components, the specific component may be directly connected to the other components without having an intermediary component, or it may not be directly connected to the other components but may have an intermediary component.

[0049] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0050] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0051] The "open-mouth" quality defect in cigarette packs is caused by the force and deformation of the pack during repeated opening by smokers. During testing, errors in the opening and closing techniques and force applied by the testers can lead to issues. Therefore, this invention employs a cigarette pack closure performance testing tool to pre-process the samples for lid closure quality. This non-contact measurement method effectively avoids errors caused by contact and human factors.

[0052] like Figures 1-3As shown, the testing tool for evaluating the closure performance of a cigarette pack provided by this invention includes: a lid opening / closing angle stabilizing component 1, a cigarette pack fixing component 2, and an opening / closing angle / height measuring component 3. The lid opening / closing angle stabilizing component 1 is located on the back of the cigarette pack 4 and is an outwardly inclined right-angled surface. The right-angled edge of the lid opening / closing angle stabilizing component 1 is in close contact with the back of the cigarette pack 4. After the lid of the cigarette pack 4 is opened, the top of the lid contacts the inclined surface (S) of the lid opening / closing angle stabilizing component 1, ensuring that the opening angle of the cigarette pack is consistent and stable during each test. The cigarette pack fixing component 2 is a U-shaped double right-angle structure, covering the bottom and two opposite sides of the cigarette pack 4, used to fix the cigarette pack 4. The opening / closing angle / height measuring component 3 is used to measure the angle of the slit on the side of the lid or the height of the lid exceeding the body of the pack after the lid has been opened a preset number of times according to test requirements.

[0053] Furthermore, the height (L) of the right-angle side of the lid opening and closing angle stabilizing component 1 is consistent with the length of the back of the cigarette box, and the length of the back of the cigarette box is determined by the die-cutting dimensions of the cigarette box.

[0054] The angle (a) between the inclined surface and the right-angled surface of the lid opening and closing angle stabilizing component 1 is consistent with the angle (a) between the back of the cigarette box and the top surface of the box after the cigarette box is opened, and the angle (a) between the back of the cigarette box and the top surface of the box after the cigarette box is opened is determined by the die-cutting size of the cigarette box.

[0055] Furthermore, the widths of the two right-angled surfaces and one inclined surface of the lid opening and closing angle stabilizing component 1 are consistent with the width of the bottom of the cigarette box, and the width of the bottom of the cigarette box is determined by the die-cutting dimensions of the cigarette box.

[0056] Furthermore, the opening / closing angle / height measuring component 3 includes a ruler or a protractor.

[0057] During the process, the back of the sample cigarette box is placed against the right-angled edge of the lid opening angle stabilizing component 1, and the cigarette pack is secured using the cigarette pack fixing component 2. After the cigarette pack is secured, the closing performance of the cigarette box can be measured. After opening the lid a certain number of times (e.g., 20 times), the angle of the side slit of the lid or the height of the lid exceeding the box body is measured using the opening angle / height measuring component 3. The closing performance of the cigarette hard pack can be characterized by the angle of the side slit of the lid or the height of the lid exceeding the box body. When the cigarette box 4 has a "smiling" quality defect, there is a certain height difference between the front lid and the main body of the pack, and there is a width difference between the lid and the joint line of the lid and the main body of the pack. The samples were pre-treated using a cigarette hard pack closure performance testing tool to ensure that the opening angle of the pack lid was consistent during the performance test, thus ensuring the stability of the test conditions. After the test, the readings could be directly taken from the scale or protractor on the tool. Then, the flatness data of the front of the pre-treated sample was collected, analyzed, and compared with the flatness of the standard pack. The performance evaluation system established by direct reading was then used to determine the data, thereby obtaining the closure quality of the hard pack pack lid.

[0058] The testing tool for evaluating the closing performance of cigarette hard packs provided in this embodiment of the invention can ensure that the opening angle of the cigarette pack is consistent and stable in each test after the test sample is pretreated, thus avoiding errors caused by human operation.

[0059] Correspondingly, such as Figure 4 As shown, the present invention also provides a pretreatment method for cigarette hard packs using the above-mentioned testing tool for evaluating the closure performance of cigarette hard packs. In actual implementation, the method specifically includes the following steps:

[0060] Step SA: Remove the pull cord and BOPP film from the cigarette box sample containing the cigarettes, open the cigarette box lid, remove the inner lining paper, close the lid, and press the back of the cigarette box sample tightly against the right-angle side of the lid opening and closing angle stabilizing component to fix the cigarette box.

[0061] Step SB: Open the lid until the top of the lid contacts the inclined surface of the lid opening and closing angle stabilizing component, then close the lid.

[0062] Step SC: After repeating the above lid opening process a preset number of times, the angle of the side slit of the lid or the height of the lid exceeding the box body is measured by the opening / closing angle / height measuring component.

[0063] The pretreatment method for cigarette hard packs provided in this invention can ensure that the opening angle of the cigarette pack is consistent and stable in each test, avoiding errors caused by human operation.

[0064] Furthermore, such as Figure 5As shown, the present invention also provides a system for evaluating the closing performance of cigarette hard packs, including the above-mentioned testing tool for evaluating the closing performance of cigarette hard packs, a sample stage, a scanning system, a data acquisition module, a processing module, and a visualization module. The data acquisition module is connected to the scanning system and the processing module respectively, and the processing module is also connected to the visualization module.

[0065] The sample stage is used to place cigarette pack samples;

[0066] The scanning system is used to emit lasers toward the cigarette pack sample;

[0067] The data acquisition module is used to acquire images of the opening surface of the cigarette pack, obtain several composite image signals, and receive laser signals reflected by the cigarette pack sample to obtain laser contour information;

[0068] The processing module is used to process the composite image signal of the cigarette pack sample to obtain the outline information of the cigarette pack, and obtain the opening position coordinate information of the cigarette pack based on the outline information of the cigarette pack; and to process the laser signal of the opening position coordinate to obtain the flatness parameter information of the surface at the opening position coordinate, and to compare the obtained flatness parameter information with the standard parameters in the database to obtain the evaluation result of the closure quality performance of the hard box small box lid.

[0069] The visualization module is used to output the evaluation results of the closure quality performance of the hard box and small box in a visual form.

[0070] The scanning system includes a laser for emitting laser light onto a cigarette pack to be tested placed on a sample stage.

[0071] Furthermore, the data acquisition module includes a CCD camera and a receiver, wherein the CCD camera is used to acquire images of the opening surface of the cigarette pack to obtain several composite image signals; the receiver is used to receive laser signals reflected by the cigarette pack sample to obtain laser contour information;

[0072] Furthermore, the processing module includes a data acquisition card and a processor. The data acquisition card is used to perform analog-to-digital conversion on the composite image signal and laser contour information acquired by the data acquisition module to obtain a digital signal. The processor is used to convert and process the digital signal corresponding to the composite image signal to obtain the contour information of the cigarette pack, and obtain the opening position coordinate information of the cigarette pack based on the contour information of the cigarette pack. It also analyzes the digital signal corresponding to the laser signal at the opening coordinate of the cigarette pack to obtain the flatness parameter information of the surface at the opening position coordinate, and compares the obtained flatness parameter information with the standard parameters in the database to obtain the closing quality performance evaluation result of the hard box small box lid. The closing quality performance evaluation result of the hard box small box lid includes at least one of the slit length, width, and height at the opening of the cigarette pack.

[0073] The system for evaluating the closure performance of cigarette hard packs provided in this invention can accurately quantify the evaluation of the lid slits. The system uses a cigarette hard pack closure performance testing tool to pre-process the test samples, further avoiding errors caused by human operation. During the testing process, the system compares the results with standard parameters to quickly obtain the test results. Compared with manual slit judgment, which mainly relies on visual inspection and measurement, the system is more accurate and avoids problems such as inconsistent judgment scales and empirical and individualized testing methods.

[0074] Correspondingly, such as Figure 6 and Figure 7 As shown, the present invention also provides a method for evaluating the closure performance of a cigarette hard pack, comprising the following steps:

[0075] Step S1: Place the unopened standard hard box containing cigarettes on the sample stage. The scanning system emits a laser to the surface area of ​​the opening of the standard hard box. The data acquisition module acquires an image of the surface area of ​​the opening of the standard hard box, obtaining a composite image signal of the main body and lid of the standard hard box. The laser signal reflected by the standard hard box is received to obtain laser contour information.

[0076] In practice, an unopened standard hard-pack box (containing cigarettes) is placed in the detection area of ​​the sample stage. The scanning system emits lasers point by point in both directions on the surface area of ​​the opening of the standard hard-pack box. The CCD camera in the data acquisition module acquires images of the surface area of ​​the opening of the standard hard-pack box, resulting in a series of composite image signals of the main body and lid of the standard hard-pack box. The reflected laser is then received again by the receiver in the data acquisition module to obtain the laser contour information.

[0077] Step S2: The processing module converts and processes the composite image signal to locate the opening of the cigarette box, obtains the coordinate information of the opening position of the standard hard box, and automatically analyzes the flatness parameter information of the surface at the opening position coordinate position based on the contour information to obtain the standard flatness parameter of the small box surface in the database.

[0078] The CCD camera and receiver transmit the composite image signal and laser contour information to the processing module, respectively. The processing module acquires and processes the raw data to obtain standard parameters for the surface flatness of the small box within the database. This invention uses the processing module to detect the surface flatness at the opening of an unopened hard-pack containing cigarettes, and stores the detection parameter information and contour coordinates in the database as standard parameters.

[0079] Step S3: Place the cigarette pack containing the cigarettes, which has been pre-treated using a cigarette pack closure performance testing tool, on the sample stage. The scanning system emits a laser to the opening area of ​​the cigarette pack and the data acquisition module acquires an image of the opening surface of the cigarette pack, obtaining a composite image signal of the main body and lid of the cigarette pack. The laser signal reflected by the cigarette pack is also received to obtain laser contour information.

[0080] In step S3, the pre-processing of the hard pack containing cigarettes using the cigarette hard pack closure performance testing tool specifically includes: pre-processing the hard pack using an automatic cigarette box lid opening and closing device, manually opening the lid of the hard pack to be tested, tearing off the inner lining paper, and repeatedly opening and closing the lid a preset number of times (e.g., 20 times). The gap formed by the natural rebound of the lid after it is closed is the lid slit.

[0081] Furthermore, in steps S2 and S3, the image of the laser irradiating the surface of the test sample is preprocessed. Specifically, the upper and lower ranges of the image are determined based on the effective area of ​​the lid region, and the image is smoothed and denoised to eliminate local bright spots and other cluttered background interference.

[0082] Furthermore, the scanning system emits lasers point-by-point in both directions onto the pre-processed opening area of ​​the hard-pack box under test. The CCD camera in the data acquisition module acquires images of the opening surface area of ​​the hard-pack box under test, resulting in a series of composite image signals of the main body and lid of the standard hard-pack box. (See...) Figure 8 The reflected laser light is received again by the receiver, and the laser profile information is obtained (see image below). Figure 9 .

[0083] Step S4: After receiving the composite image signal, the processing module converts it into a digital signal via the data acquisition card A / D converter and then processes and analyzes it in the processor. It locates the opening of the cigarette pack and obtains the coordinate information of the opening position. Based on the position information, it identifies the slit part of the lid, analyzes the laser contour information of the slit part of the lid, obtains the surface flatness parameters, and measures the length, width and height of the slit.

[0084] In steps S2 and S4, during the positioning of the cigarette pack opening, the structural laser principle is used to establish a corresponding mathematical model based on the image pixel coordinates and system light plane parameters, thereby calculating the spatial coordinate values.

[0085] This invention uses a processing module to detect the surface flatness of a hard pack containing cigarettes that has been pre-treated using a cigarette hard pack closure performance testing tool.

[0086] The CCD camera and receiver transmit the composite image signal and laser contour information to the processing module, respectively. The processing module effectively identifies the laser data of the slit in the lid based on the position coordinates obtained from the processed image information, and measures the length, width and height of the slit.

[0087] Step S5: Compare the test data corresponding to the test hard pack with the standard parameters corresponding to the standard hard pack, generate the test results, and output the test results through the visualization module to obtain the closure performance system data of the cigarette hard pack.

[0088] The processing module compares and analyzes the test data with standard parameters and generates test results. The test results are then output through the visualization module, which are the system data of the closure performance of the cigarette hard pack.

[0089] In some embodiments of the present invention, the direct reading of the cigarette hard pack closure performance testing tool is compared with the reading obtained through step S4 for parallelism verification. At the same time, the hard pack closure performance data obtained based on the direct reading of the cigarette hard pack closure performance testing tool is stored in a database as a performance evaluation parameter.

[0090] Step S6: Input the system data of the closing performance of the cigarette hard pack into the performance evaluation system for comparison, generate the closing quality performance evaluation of the hard pack lid, and output the test results through the visualization module.

[0091] In step S6, during the process of generating the performance evaluation of the lid closure quality of the hard-pack small box, a performance evaluation system is established by conducting several tests on standard hard-pack small boxes of the same brand. The database confidence interval of the lid slit parameters is obtained, and a qualified product parameter interval is generated. The performance evaluation of the lid closure quality of the hard-pack small box is carried out based on whether the test results exceed the interval range. The system will provide prompts through the visualization module.

[0092] The method for evaluating the closure performance of cigarette hard packs provided in this invention can accurately quantify the evaluation of the lid slit. The test sample is pre-processed using a cigarette hard pack closure performance testing tool to further avoid errors caused by human operation. During the testing process, the test results are quickly obtained by comparing with standard parameters. Compared with the manual slit judgment method that mainly relies on visual inspection and measurement, the method is more accurate and avoids problems such as inconsistent judgment scales, experience-based and individualized testing methods.

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

[0094] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A test tool for evaluating the closure performance of a carton hard pack, characterized by, The test tool comprises a box cover opening and closing angle stabilizing assembly, a cigarette pack fixing assembly, and an opening and closing angle / height measuring assembly. The box cover opening and closing angle stabilizing assembly is arranged on the back of the cigarette box and is an outwardly inclined right-angle slope. The right-angle side of the box cover opening and closing angle stabilizing assembly is in close contact with the back of the cigarette box. After the box cover of the cigarette box is opened, the top of the box cover is in contact with the slope of the box cover opening and closing angle stabilizing assembly, so as to ensure that the opening angle of the cigarette box is consistent and stable during each test. The cigarette pack fixing assembly is a U-shaped double-right-angle structure and is wrapped around the bottom and the two opposite sides of the cigarette box, so as to fix the cigarette box. The opening and closing angle / height measuring assembly is used to measure the angle of the slit on the side of the box cover or the height of the box cover beyond the box body after the box cover is opened for a predetermined number of times according to the test requirements. The height of the right-angle side of the box cover opening and closing angle stabilizing assembly is consistent with the length of the back of the box body of the cigarette box, and the length of the back of the box body is determined by the die-cutting size of the cigarette box. The angle between the slope and the right-angle side of the box cover opening and closing angle stabilizing assembly is consistent with the angle between the back of the cigarette box and the top of the box body after the cigarette box is opened, and the angle between the back of the cigarette box and the top of the box body after the cigarette box is opened is determined by the die-cutting size of the cigarette box. The width of the two right-angle sides and the inclined side of the box cover opening and closing angle stabilizing assembly is consistent with the width of the bottom of the cigarette box, and the width of the bottom of the cigarette box is determined by the die-cutting size of the cigarette box. The opening and closing angle / height measuring assembly comprises a ruler or a protractor.

2. The test tool for evaluating the closing performance of a hard pack of cigarettes according to claim 1, wherein The test tool comprises the following steps:

3. A method of pre-treating a hard pack of cigarettes with the test tool for evaluating the closure performance of a hard pack of cigarettes according to any one of claims 1 to 2, characterized in that, The pull tab and the BOPP film at the box cover of the cigarette box sample containing cigarette sticks are torn off, the box cover of the cigarette box is opened, the inner liner tear tab is torn off, and then the box cover is closed. The back of the cigarette box sample is in close contact with the right-angle side of the box cover opening and closing angle stabilizing assembly, so as to fix the cigarette box. After the box cover is opened to the point that the top of the box cover is in contact with the slope of the box cover opening and closing angle stabilizing assembly, the box cover is closed. After the box cover opening process is repeated for a predetermined number of times, the angle of the slit on the side of the box cover or the height of the box cover beyond the box body is measured by the opening and closing angle / height measuring assembly. The test tool comprises the test tool for evaluating the closing performance of a hard cigarette carton, a sample table, a scanning system, a data acquisition module, a processing module, and a visualization module. The data acquisition module is connected with the scanning system and the processing module, respectively. The processing module is further connected with the visualization module. The sample table is used to place a cigarette pack sample. The scanning system is used to emit laser light to the cigarette pack sample. The data acquisition module is used to acquire images of the opening surface of the cigarette pack, obtain a plurality of composite image signals, and receive laser signals reflected by the cigarette pack sample to obtain laser profile information. The processing module is used to process the composite image signals of the cigarette pack sample to obtain the profile information of the cigarette pack, obtain the coordinate information of the opening position of the cigarette pack according to the profile information of the cigarette pack, process the laser signals of the coordinates of the opening position of the cigarette pack, obtain the flatness parameter information of the coordinate position surface of the opening position, compare the obtained flatness parameter information with standard parameters in a database, and obtain the evaluation result of the closing quality performance of the hard carton.

4. A system for evaluating the closure performance of a carton of cigarettes, the system comprising: ​ ​ ​ ​ ​ The visualization module is used for outputting the hard box small box cover closing quality performance evaluation result in a visual form.

5. The system for evaluating the closing performance of a hard pack of cigarettes according to claim 4, wherein The scanning system comprises a laser for emitting laser to the to-be-detected cigarette packet placed on the sample table; The data acquisition module comprises a CCD camera and a receiver, wherein the CCD camera is used for acquiring the image of the opening surface of the cigarette packet to obtain a plurality of composite image signals; and the receiver is used for receiving the laser signal reflected by the cigarette packet sample to obtain laser profile information; The processing module comprises a data acquisition card and a processor, wherein the data acquisition card is used for performing analog-digital conversion on the composite image signals and the laser profile information acquired by the data acquisition module to obtain digital signals; and the processor is used for performing conversion processing on the digital signals corresponding to the composite image signals to obtain the profile information of the cigarette packet, obtaining the opening position coordinate information of the cigarette packet according to the profile information of the cigarette packet, analyzing the digital signals corresponding to the opening position coordinates of the cigarette packet to obtain the flatness parameter information of the opening position coordinate surface, comparing the obtained flatness parameter information with the standard parameter in the database, and obtaining the hard box small box cover closing quality performance evaluation result, wherein the hard box small box cover closing quality performance evaluation result comprises at least one of the length, width and height of the slit at the opening of the cigarette packet.

6. A method for evaluating the closure performance of a hard pack of cigarettes using the system of any one of claims 4-5, wherein, The method comprises the following steps: placing the standard hard box small box containing cigarettes on the sample table, emitting laser to the opening surface area of the standard hard box small box by the scanning system, acquiring the image of the opening surface area of the standard hard box small box by the data acquisition module to obtain the composite image signals of the main body and the cover part of the surface of the standard hard box small box, and receiving the laser signal reflected by the standard hard box small box to obtain laser profile information; the processing module performs conversion processing on the composite image signals to position the opening of the cigarette packet, obtains the opening position coordinate information of the standard hard box small box, and automatically analyzes the flatness parameter information of the opening position coordinate surface according to the profile information to obtain the standard parameter of the flatness of the surface of the small box in the database; placing the to-be-detected hard box small box containing cigarettes preprocessed by the cigarette hard small box closing performance testing tool on the sample table, emitting laser to the opening surface area of the to-be-detected hard box small box by the scanning system, acquiring the image of the opening surface area of the to-be-detected hard box small box by the data acquisition module to obtain the composite image signals of the main body and the cover part of the surface of the to-be-detected hard box small box, and receiving the laser signal reflected by the to-be-detected hard box small box to obtain laser profile information; after receiving the composite image signals, the processing module converts the composite image signals into digital signals by the data acquisition card A / D, processes and analyzes the digital signals in the processor, positions the opening of the cigarette packet, obtains the opening position coordinate information of the cigarette packet, identifies the cover slit part according to the position information, analyzes the laser profile information of the cover slit part, obtains the surface flatness parameter, and measures the length, width and height of the slit; comparing the detection data corresponding to the to-be-detected hard box small box with the standard parameter corresponding to the standard hard box small box, generating a detection result, outputting the detection result by the visualization module, and obtaining the closing performance system data of the cigarette hard small box. The closed performance of the cigarette hard carton is compared with the performance evaluation system, and the closed quality performance evaluation of the hard carton cover is generated, and the detection result is output through the visualization module.

7. The method of evaluating the closure performance of a hard pack of cigarettes according to claim 6, wherein The pre-treatment of the hard carton containing cigarettes to be tested by using the cigarette hard carton closed performance testing tool specifically includes: pre-treating the hard carton by using the cigarette carton cover automatic opening and closing device, manually opening the cover of the hard carton to be tested, tearing off the inner liner tear-off piece, and repeatedly opening and closing the cover for a preset number of times, and the gap formed by the natural rebound of the cover after being closed is the cover gap; In the process of positioning the cigarette package cover opening, a corresponding mathematical model is established according to the image pixel coordinates and the system light plane parameters by using the structure laser principle, so as to inversely calculate the space coordinate values. In the process of generating the closed quality performance evaluation of the hard carton cover, the performance evaluation system is established by testing a standard hard carton of the same brand for several times, the database confidence interval of the cover gap parameter is obtained, the qualified product parameter interval is generated, and the closed quality performance evaluation of the hard carton cover is performed according to whether the detection result exceeds the interval range.

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