Experimental device and experimental method for automatically measuring initial adhesion of water-based adhesive for cigarettes

Abstract

The invention provides an experimental device and an experimental method for automatically measuring initial adhesion of a water-based adhesive for cigarettes. A sample preparation unit is used for adhering a packaging material for cigarettes and an adhesive tape into a whole in a rolling manner and cutting the packaging material and the adhesive tape into a set size; the sample transferring unit comprises a mechanical arm assembly composed of a rotating arm and a negative pressure suction cup and is used for transferring an upper sample to the testing unit; the glue dripping unit is used for dripping glue to the upper surface of the lower sample; the testing unit is used for adhering the upper test sample and the lower test sample together, separating the upper test sample and the lower test sample after maintaining for a period of time, and detecting the initial adhesion between the upper test sample and the lower test sample; the mobile platform is used as a carrying platform of the lower sample and is used for switching positions among the lower sample preparation assembly, the glue dripping unit and the testing unit; the recycling unit is used for being matched with the sample transferring unit and recycling the tested upper sample and the tested lower sample. The scheme has the advantages of being capable of automatically completing sample preparation, glue dripping execution and calibration and execution of the initial viscous force process.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco detection. Specifically, it relates to an automatic determination experimental device and experimental method for the initial adhesion of water-based glue for cigarettes. Background Art

[0002] The adhesion ability of water-based glue for cigarettes to cigarette packaging materials is divided into initial adhesion and holding adhesion. The initial adhesion is an important index to measure the adhesion between two surfaces and has an important impact on the machine adaptability of water-based glue for cigarettes.

[0003] The whole process of the initial adhesion experiment of water-based glue for cigarettes mainly includes dropping glue on the surface of cigarette packaging materials to ensure constant dropping glue quality, then pasting the cigarette packaging materials together with each other after the dropping glue is completed, maintaining a constant pressure and time, and then separating the cigarette packaging materials, and detecting the maximum pulling force during the separation process. This pulling force can be used to represent the initial adhesion.

[0004] This process usually relies on manual operation due to many operation actions.

[0005] However, when conducting a large number of comparative experiments, there are problems with the efficiency of manual completion, and there are also many obstacles in the automated solution.

[0006] The main obstacle aspects include the standardized preparation of samples of cigarette packaging materials, the execution and calibration of the glue dropping action, the execution of the measurement process, etc.

[0007] In order to solve the above existing problems, people have been seeking an ideal technical solution. Summary of the Invention

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art, and thus provide an automatic determination experimental device and experimental method for the initial adhesion of water-based glue for cigarettes, which can automatically complete sample preparation, glue dropping execution and calibration, and the execution of the initial adhesion process.

[0009] In order to achieve the above purpose, the technical solution adopted by the present invention is: an automatic determination experimental device for the initial adhesion of water-based glue for cigarettes, including a frame and a sample preparation unit, a sample transfer unit, a glue dropping unit, a testing unit, a moving platform and a recovery unit arranged based on the frame; The sample preparation unit includes a lower sample preparation component and an upper sample preparation component, and the lower sample preparation component and the upper sample preparation component are used to paste the cigarette packaging material and the tape into one body by rolling and cutting them into a set size; The sample transfer unit includes a robotic arm assembly composed of a rotating arm and a negative pressure suction cup, and is used to transfer the upper sample to the testing unit; The glue dropping unit is used to drop glue on the upper surface of the lower sample; The test unit is used to paste the upper specimen and the lower specimen together, separate them after a certain period of time, and detect the initial adhesion force between the upper specimen and the lower specimen; The moving platform serves as a carrier for the lower specimen and is used to switch positions among the lower specimen preparation component, the dispensing unit, and the test unit; The recovery unit is used to cooperate with the specimen transfer unit to recover the upper specimen and the lower specimen after testing.

[0010] Based on the above, both the upper specimen preparation component and the lower specimen preparation component include a first material tray, a second material tray, several reversing rollers, a pair of rolling rollers, a clamping mechanism, a cutting mechanism, and a grasping mechanism; The first material tray and the second material tray are respectively used to load the disc-shaped tobacco packaging material and the tape with a single-sided adhesive surface exposed; The reversing rollers are used to receive the tape and the tobacco packaging material output from the first material tray and the second material tray and provide a steering and guiding function; A pair of the rolling rollers are arranged downstream of the reversing rollers and are used to paste the exposed surface of the tape and one surface of the tobacco packaging material together by rolling; The clamping mechanism is arranged downstream of the rolling rollers and is used to clamp the distal end of the specimen pasted together; The cutting mechanism is arranged between the clamping mechanism and the rolling rollers and is used to cut the pasted specimen into a fixed size; The grasping mechanism is arranged above or below between the clamping mechanism and the rolling rollers and is used to transfer the pasted specimen; The specimen prepared by the upper specimen preparation component is arranged with the paper surface facing down, and the specimen prepared by the lower specimen preparation component is arranged with the paper surface facing up.

[0011] Based on the above, an upper-mounted suction cup is installed on the rotating arm in the specimen transfer unit and is used to adsorb and fix the specimen from the bottom of the specimen. The rotating arm includes at least two rotating stations, which are respectively located below the grasping mechanism and below the test unit; The moving platform cooperates with the grasping mechanism in the lower specimen preparation component to grasp and transfer the specimen to the upper surface of the moving platform.

[0012] Based on the above, the dispensing unit includes a dispensing machine, a hose, a dispensing syringe, a syringe clamping mechanism, and a dispensing lifting mechanism installed on the frame; The dispensing lifting mechanism is integrally installed on the frame. The syringe clamping mechanism is arranged on the slider of the dispensing lifting mechanism. The dispensing syringe is installed in the syringe clamping mechanism. The dispensing machine is connected to the dispensing syringe through a hose, and the glue outlet of the dispensing syringe faces down.

[0013] Based on the above, the mobile platform includes a translation mechanism, a base installed on the translation mechanism, a movable stage installed on the base, a calibration mechanism, and a negative pressure mechanism for providing negative pressure to the upper surface of the movable stage; The calibration mechanism includes a lifting component installed on the base and a weighing component arranged at the top of the lifting component. The top of the weighing component serves as a weighing platform for lifting the movable stage; The upper surface of the movable stage is provided with a dense array of negative pressure holes communicating with the negative pressure mechanism for adsorbing and fixing the specimen.

[0014] Based on the above, vertical support columns are arranged on the base opposite to the movable stage, and positioning holes are oppositely arranged on the movable stage; A negative pressure channel is built in the movable stage, and a negative pressure connection hole is arranged on the lower end surface of the movable stage; The negative pressure mechanism includes a column with negative pressure holes arranged on the base. The top of the column is a flexible adsorption surface corresponding to the negative pressure connection hole of the movable stage, so as to adsorb the lower end surface of the movable stage when the movable stage falls back to its position, and conduct the negative pressure air path; The weighing component is a force sensor with a flat stress surface.

[0015] Based on the above, the testing unit includes a punch mechanism and a sensor component. The punch mechanism includes a punch lifting component and a punch with a flat lower pressing surface. The punch lifting component is used to drive the punch to lift and lower. A negative pressure channel is arranged in the punch, and negative pressure holes are arranged on the lower pressing surface of the punch for fixing the upper surface of the specimen; The sensor component is integrated in the punch mechanism for real-time detection of the change in tensile and compressive force.

[0016] Based on the above, the recycling unit includes a waste bin; The waste bin is provided with a cantilever and a lower-mounted suction cup corresponding to the testing unit. The lower-mounted suction cup is located above the waste bin. The lower-mounted suction cup cooperates with the rotating arm and the upper-mounted suction cup of the specimen transfer unit to take out the used specimen from the testing unit and transfer it to the waste bin; The waste bin is provided with a rotating arm and a lower-mounted suction cup corresponding to the dispensing unit. The rotating arm and the lower-mounted suction cup are provided with at least two working positions, including below the testing unit and above the waste bin, for transferring the unqualified or tested dispensing specimens from the mobile platform to the waste bin.

[0017] An experimental method for measuring the initial adhesion of water-based cigarette glue is based on the above-mentioned automatic experimental device for measuring the initial adhesion of water-based cigarette glue, and includes the following steps: Step 1) Turn on the power supply, and inject water-based cigarette glue into the dispenser; install the corresponding tape and cigarette packaging materials in the specimen preparation unit respectively; Step 2) Use the sample transfer unit to cooperate with the upper sample preparation assembly to adsorb the front side of the tobacco packaging material to be tested face down at the lower end of the pressing head mechanism to form an upper sample; use the lower sample preparation assembly to cooperate with the moving platform to adsorb the front side of the tobacco packaging material to be tested face up on the upper surface of the moving platform to form a lower sample; Step 3) Drive the moving stage to the dispensing station below the dispensing mechanism, and the dispensing mechanism dispenses glue on the surface of the lower sample; Step 4) Drive the calibration mechanism to work to calibrate the weight of a single dispensing; Step 5) Drive the moving platform to the test station below the pressing head mechanism, set the motion parameters of the pressing head mechanism, as well as the parameter information of the holding pressure, holding time, and separation time after moving in place, and then start the pressing head mechanism to move downward to make the front sides of the paper surfaces of the upper sample and the lower sample stick together, and raise the pressing head mechanism at the separation time to separate the upper sample and the lower sample from each other; Step 6) Record the force condition during the separation process of the upper sample and the lower sample, and take the maximum force value as the initial adhesion force.

[0018] Based on the above, in Step 5), the set parameters include the displacement distance and walking speed in the initial state, as well as the starting pressure, holding pressure, and holding time during the pressing process; for each water-based glue sample for cigarettes, at least three groups are measured, and the arithmetic mean of multiple tests is taken as the test result of a water-based glue sample for cigarettes, and the detection accuracy is at least 0.001 N.

[0019] The present invention has outstanding substantive features and remarkable progress compared with the prior art. Specifically, the present invention fully automates the processes of sample preparation, transfer, glue dropping, calibration, testing, and recovery required for the entire experiment, and can be completed without manual participation. The experimenter only needs to replace the glue dropping material and packaging material, and complete the statistical and matching of the experimental data required for comparison, which greatly saves labor and improves the experimental efficiency, providing a guarantee for the research on the compatibility between water-based glue and packaging materials.

[0020] Furthermore, a sample preparation unit is designed. Considering that packaging materials are usually relatively thin and light and are not easy to fix during the experiment, to solve this problem, the method of using tape to stick and fix the packaging material as the sample is adopted to ensure the stability of the sample during the automatic transfer process, thereby ensuring the accuracy and stability of the experiment.

[0021] Furthermore, a calibration mechanism is configured in the glue dropping process. Although the glue dispenser has a certain accuracy, due to the own standard requirements in the water-based glue experiment process, it is necessary to calibrate the glue for each dispensing. The calibration mechanism in this solution is automatically completed at the moving platform and can keep the disconnection and connection of the negative pressure channel unobstructed, ensuring the accuracy of the test process.

[0022] Furthermore, both the testing unit and the mobile platform fix the specimen by negative pressure. The testing unit is integrated with a tensile and compressive force sensor, and the tearing process of simulating the initial adhesion force experiment is stable, accurate and efficient, which can ensure the full and stable execution of the experiment. Description of the Drawings

[0023] Figure 1 is a schematic diagram of the overall structure of the experimental device for automatically measuring the initial adhesion force of water-based glue for cigarettes in the present invention.

[0024] Figure 2 is a schematic diagram of the structure of the specimen preparation unit in the present invention.

[0025] Figure 3 is a schematic diagram of the structures of the specimen transfer unit and the recovery unit in the present invention.

[0026] Figure 4 is a schematic diagram of the structure of the glue dropping unit in the present invention.

[0027] Figure 5 is a schematic diagram of the structure of the testing unit in the present invention.

[0028] Figure 6 is a schematic diagram of the overall structure of the mobile platform in the present invention.

[0029] Figure 7 and Figure 8 is a schematic diagram of the platform details of the mobile platform in the present invention.

[0030] In the figure: 100. Frame; 200. Specimen preparation unit; 201. First material tray; 202. Second material tray; 203. Reversing roller; 204. Rolling roller; 205. Clamping mechanism; 206. Cutting mechanism; 207. Gripping mechanism; 208. Locking mechanism; 300. Specimen transfer unit; 301. Rotary arm; 302. Upper suction cup; 400. Glue dropping unit; 401. Dispensing syringe; 402. Syringe clamping mechanism; 403. Dispensing lifting mechanism; 500. Testing unit; 501. Press head assembly; 502. Sensor assembly; 600. Mobile platform; 601. Translation mechanism; 602. Base; 603. Movable stage; 604. Negative pressure mechanism; 605. Calibration mechanism; 606. Negative pressure holes; 607. Support columns; 608. Negative pressure connection holes; 609. Flexible adsorption surface; 6051. Lifting assembly; 6052. Weighing assembly; 700. Recovery unit; 701. Waste bin; 702. Cantilever; 703. First lower suction cup; 704. Waste rotary arm; 705. Second lower suction cup. Detailed Embodiments

[0031] The technical solution of the present invention will be further described in detail below through specific embodiments.

[0032] As Figures 1-8 shown, an automatic determination experimental device for the initial adhesion of water-based glue for cigarettes includes a frame 100 and a sample preparation unit 200, a sample transfer unit 300, a glue dripping unit 400, a testing unit 500, a moving platform 600, and a recovery unit 700 provided based on the frame 100.

[0033] As Figure 2 shown, the sample preparation unit 200 includes a lower sample preparation component and an upper sample preparation component, both having the same structure. The lower sample preparation component and the upper sample preparation component are used to paste the cigarette packaging material and the tape together by rolling and cut them into a set size.

[0034] Specifically, in this embodiment, the sample preparation unit 200 includes a first material feeding tray 201, a second material feeding tray 202, several reversing rollers 203, a pair of rolling rollers 204, a clamping mechanism 205, a cutting mechanism 206, and a grasping mechanism 207.

[0035] The first material feeding tray 201 and the second material feeding tray 202 are respectively used to load the disk-shaped cigarette packaging material and the tape with a single-sided adhesive surface exposed.

[0036] In this embodiment, both the first material feeding tray 201 and the second material feeding tray 202 are non-powered trays, and the power provided by the front rolling roller 204 is used to drag the cigarette packaging material and the tape to feed forward.

[0037] In other embodiments, a corresponding locking mechanism 208 can also be configured based on the first material feeding tray 201 and the second material feeding tray 202. The locking mechanism 208 includes a top block with a circular arc surface, a slideway, and a tightening bolt. The top block is slidably matched with the slideway, and the tightening bolt drives the circular arc surface of the top block to press the circumferential surface of the first material feeding tray / second material feeding tray from the side.

[0038] The reversing roller 203 is used to receive the tape and the cigarette packaging material output from the first material feeding tray 201 and the second material feeding tray 202 and provide a steering and guiding function. In this embodiment, two reversing rollers are provided to conduct the cigarette packaging material and the tape to a horizontal state.

[0039] A pair of the rolling rollers 204 are arranged downstream of the reversing roller 203 and are used to paste the exposed surface of the tape and one side of the tobacco packaging material together by rolling, so as to form a specimen with one side being the tape and the other side being the tobacco packaging material. The rolling rollers 204 are driven by a motor to rotate. The transmission shafts of the two rolling rollers 204 can be meshed through gears or engaged through friction to provide the ability to rotate towards each other and compact the tape and the tobacco packaging material.

[0040] The clamping mechanism 205 is arranged downstream of the rolling roller 203 and is used to clamp the distal end of the specimen pasted together. In this embodiment, the clamping mechanism 205 is configured as pneumatically driven jaws that can open and close vertically and is used to clamp the distal end of the specimen to facilitate the cutting by the cutting mechanism 206 and the grasping by the grasping mechanism 207. In other embodiments, it can also be configured as other forms of manipulator structures.

[0041] The cutting mechanism 206 is arranged between the clamping mechanism 205 and the rolling roller 203 and is used to cut the pasted specimen into a fixed size. In this embodiment, it is cut into rectangular blocks, and the cutting mechanism 206 uses scissors for cutting. In other embodiments, a cutter can also be selected.

[0042] The grasping mechanism 207 is arranged above or below between the clamping mechanism 205 and the rolling roller 203 and is a component with a lifting mechanism. In this embodiment, its lifting mechanism is a screw motor and is used to transfer the pasted specimen. In this embodiment, the grasping mechanism 207 is configured as a mechanism with a negative pressure suction head and fixes and transfers the specimen by means of negative pressure adsorption.

[0043] In terms of spatial position distribution, the lower specimen preparation assembly is close to the glue dropping unit, and the upper specimen assembly is close to the testing unit. The specimen prepared by the upper specimen preparation assembly is arranged with the paper surface facing downwards to facilitate direct adsorption on the pressing head mechanism of the testing unit. The specimen prepared by the lower specimen preparation assembly is arranged with the paper surface facing upwards to facilitate direct placement on the moving platform 600 for glue dropping.

[0044] As Figure 3 shown, the specimen transfer unit 300 includes a robotic arm assembly composed of a rotating arm 301 and a negative pressure suction cup and is used to transfer the upper specimen to the testing unit.

[0045] Specifically, in this embodiment, an upper-mounted suction cup 302 is installed on the rotating arm 301 in the specimen transfer unit 300 and is used to adsorb and fix the specimen from the bottom of the specimen. The rotating arm 301 includes at least two rotating stations, which are respectively located below the grasping mechanism 207 and below the testing unit 500.

[0046] The process of transferring the upper specimen to the testing unit is as follows: After the sample is clamped at the far end by the clamping mechanism 205, the gripping mechanism 207 absorbs the upper surface of the sample from the upper end, and then the cutting mechanism 206 cuts the sample into rectangular blocks. Then the clamping mechanism 205 is released, and the gripping mechanism 207 moves down to transfer the sample to the upper suction cup 302 of the sample transfer unit 300 and release the sample. The upper suction cup 302 provides negative pressure to absorb the lower surface of the sample, and after transferring the set angle to the test unit 500, the pressure head mechanism 501 on the test unit 500 moves down to hand over the sample to the upper suction cup 302, and finally the pressure head mechanism 501 absorbs the upper surface of the sample (the upper surface of the sample is the back of the glue), waiting for testing.

[0047] At the other end, the mobile platform 600 cooperates with the grabbing mechanism in the lower sample preparation assembly to grab and transfer the sample to the upper surface of the mobile platform.

[0048] The process of transferring the lower sample to the mobile platform 600 is as follows: After the sample is clamped at the far end by the clamping mechanism 205, the grabbing mechanism 207 absorbs the upper surface of the sample from the upper end, and then the cutting mechanism 206 cuts the sample into rectangular blocks. Then the clamping mechanism 205 is released, and the grabbing mechanism 207 moves down. At this time, the mobile platform 600 moves to the bottom of the grabbing mechanism 207, and the sample is directly placed on the mobile platform 600 below. The negative pressure channel in the mobile platform 600 is opened, the sample is adsorbed and stabilized, and the paper surface of the sample is set facing up.

[0049] like Figure 4 As shown, the glue dripping unit 400 is used to drip glue onto the upper surface of the lower sample; the glue dripping unit includes a glue dispensing machine (omitted in the figure) installed on a frame, a hose (omitted in the figure), a glue dispensing syringe 401, a syringe clamping mechanism 402 and a glue dispensing lifting mechanism 403.

[0050] Specifically, the glue dispensing lifting mechanism 403 is integrally installed on the frame 100. In this embodiment, the glue dispensing lifting mechanism 403 is a screw drive mechanism. The syringe clamping mechanism 402 is arranged on a slider of the glue dispensing lifting mechanism 403. The glue dispensing syringe 401 is installed in the syringe clamping mechanism 402. The glue dispensing machine is connected to the glue dispensing syringe through a hose, and the glue outlet of the glue dispensing syringe is arranged downward.

[0051] like Figures 6-8 As shown, the mobile platform 600 is used as a carrier for the lower sample, and is used to switch positions between the lower sample preparation component, the glue dispensing unit 400 and the testing unit 500; Specifically, the mobile platform 600 includes a translation mechanism 601 , a base 602 mounted on the translation mechanism, a movable platform 603 mounted on the base 602 , a calibration mechanism 605 , and a negative pressure mechanism 604 for providing negative pressure to the upper surface of the movable platform 603 .

[0052] The calibration mechanism 605 includes a lifting component 6051 installed on the base and a weighing component 6052 arranged at the top of the lifting component. The top of the weighing component 6052 serves as the weighing platform for supporting the movable stage 603.

[0053] The upper surface of the movable stage 603 is provided with a dense array of negative pressure holes 606 communicating with the negative pressure mechanism 604 for adsorbing and fixing the specimen.

[0054] Vertically arranged support columns 607 are provided on the base 602 opposite to the movable stage 603. Positioning holes are oppositely arranged on the movable stage 603. A negative pressure channel is built in the movable stage 603, and a negative pressure connection hole 608 is provided on the lower end surface of the movable stage.

[0055] The negative pressure mechanism 604 includes a column with negative pressure holes arranged on the base. The top of the column is a flexible adsorption surface 609 corresponding to the negative pressure connection hole of the movable stage, so as to adsorb the lower end surface of the movable stage when the movable stage 603 descends and returns to its position, and conduct the negative pressure air path.

[0056] The weighing component 6052 is a force sensor with a flat stress surface.

[0057] The specific process of calibration is as follows: The moving platform 600 carries the lower specimen and moves to below the dispensing unit 400 to start the dispensing and calibration process.

[0058] First, the negative pressure mechanism 604 in the moving platform 600 disconnects the negative pressure, the negative pressure connection hole 608 of the movable stage 603 and the flexible adsorption surface 609 are naturally disconnected, and the lifting component 6051 drives the weighing component 6052 to lift, jacking up the entire movable stage 603. At this time, the total weight of the movable stage 603 and the lower specimen can be measured.

[0059] Then, the dispensing mechanism 400 moves down to dispense glue on the surface of the lower specimen. After the dispensing is completed, the weighing is carried out again to obtain the total weight of the movable stage 603, the lower specimen and the dispensed glue.

[0060] Subtracting the two weights can obtain the weight of the current glue. Comparing with the preset value, if it is qualified, it enters the next test. If it is unqualified, the scrapping program is started to discard the lower specimen.

[0061] After the calibration is completed, the lifting component 6051 drives the weighing component 6052 to move down, the movable stage 603 moves down, the negative pressure connection hole 608 and the flexible adsorption surface 609 are attached, the negative pressure mechanism 604 is started, the movable stage 603 and the negative pressure mechanism are adsorbed and stabilized, and at the same time, the negative pressure holes 606 at the top provide negative pressure to adsorb and fix the lower specimen.

[0062] AsFigure 5 As shown, the test unit 500 is used to paste the upper specimen and the lower specimen together, separate them after a period of time, and detect the initial adhesion force between the upper specimen and the lower specimen; specifically, in this embodiment, the test unit 500 includes a pressing head mechanism 501 and a sensor assembly 502. The pressing head mechanism 501 includes a pressing head lifting assembly and a pressing head with a flat lower pressing surface. The pressing head lifting assembly is used to drive the pressing head to lift and lower. A negative pressure channel is provided in the pressing head, and negative pressure holes are provided on the lower pressing surface of the pressing head for fixing the upper surface of the specimen. The sensor assembly 502 is integrated in the pressing head mechanism 501 for real-time detection of the change in tensile and compressive force.

[0063] The specific testing process is as follows: The moving platform 600 carries the lower specimen completed with dispensing and moves it below the test unit 500. The entire pressing head mechanism 501 moves downward, carrying the upper specimen downward to fit with the lower specimen.

[0064] The paper surfaces of the upper specimen and the lower specimen are pasted together with a water-based adhesive under a set pressure. After maintaining for a set time, the pressing head mechanism 501 is lifted upward to separate the upper specimen and the lower specimen.

[0065] The sensor assembly 502 continuously detects the change in tensile and compressive force during this period. Among them, the maximum tensile force value is the numerical value of the initial adhesion force of the water-based adhesive.

[0066] The recovery unit 700 is used to cooperate with the specimen transfer unit to recover the upper specimen and the lower specimen after testing.

[0067] In this embodiment, the recovery unit includes a waste bin 701; The waste bin is provided with a cantilever 702 and a first lower-mounted suction cup 703 corresponding to the test unit. The first lower-mounted suction cup 703 is located above the waste bin 701. The first lower-mounted suction cup 703 cooperates with the rotating arm 301 and the upper-mounted suction cup 302 of the specimen transfer unit to take out the used specimen from the test unit and transfer it to the waste bin. The waste bin 701 is provided with a waste rotating arm 704 and a second lower-mounted suction cup 705 corresponding to the dispensing unit. The waste rotating arm 704 and the second lower-mounted suction cup 705 are provided with at least two working positions, including below the test unit and above the waste bin 701, for transferring the unqualified or tested dispensed specimens from the moving platform to the waste bin.

[0068] Since the water-based adhesive has a water-based property and the experimental dosage is small, after the experiment, wait for a while and the water-based adhesive will basically lose water and dry up, losing most of its adhesive force. Therefore, the transfer process will not cause adhesion between the waste and the transfer mechanism.

[0069] Example 2 An experimental method for measuring the initial adhesion of water-based glue for cigarettes, which is based on the automated experimental device for measuring the initial adhesion of water-based glue for cigarettes, includes the following steps: Step 1) Turn on the power supply, and inject water-based glue for cigarettes into the dispensing machine; install the corresponding tape and cigarette packaging materials in the sample preparation unit respectively; Step 2) Use the sample transfer unit to cooperate with the upper sample preparation component to adsorb the front side of the cigarette packaging material to be tested face down at the lower end of the pressing head mechanism to form an upper sample; use the lower sample preparation component to cooperate with the moving platform to adsorb the front side of the cigarette packaging material to be tested face up on the upper surface of the moving platform to form a lower sample; Step 3) Drive the moving stage to the dispensing station below the dispensing mechanism, and the dispensing mechanism dispenses glue on the surface of the lower sample; Step 4) Drive the calibration mechanism to work to calibrate the weight of a single dispensing; Step 5) Drive the moving platform to the test station below the pressing head mechanism, set the motion parameters of the pressing head mechanism, as well as the parameter information of the holding pressure, holding time, and separation time after moving in place, and then start the pressing head mechanism to move downward, so that the front sides of the paper surfaces of the upper sample and the lower sample are pasted together, and raise the pressing head mechanism at the separation time to separate the upper sample and the lower sample from each other; Among them, the set parameters include the displacement distance and walking speed in the initial state, as well as the starting pressure, holding pressure, and holding time during the pressing process; Step 6) Record the force condition during the separation process of the upper sample and the lower sample, and take the maximum force value as the initial adhesion.

[0070] For each water-based glue sample for cigarettes, measure no less than three groups, and take the arithmetic mean of multiple tests as the test result of a water-based glue sample for cigarettes, and the detection accuracy is at least 0.001 N. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements on some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered within the scope of the technical solutions claimed by the present invention.

Claims

1. An automatic determination experimental device for the initial adhesion of water-based glue for cigarettes, characterized in that: It includes a frame and a sample preparation unit, a sample transfer unit, a glue dripping unit, a testing unit, a moving platform and a recovery unit which are arranged based on the frame; The sample preparation unit includes a lower sample preparation component and an upper sample preparation component. The lower sample preparation component and the upper sample preparation component are used to paste the tobacco packaging material and the tape together by rolling and cut them into a set size; The sample transfer unit includes a robotic arm assembly composed of a rotating arm and a negative pressure suction cup, which is used to transfer the upper sample to the testing unit; The glue dripping unit is used to drip glue onto the upper surface of the lower sample; The testing unit is used to paste the upper sample and the lower sample together, separate them after maintaining for a period of time, and detect the initial adhesion force between the upper sample and the lower sample; The moving platform serves as a carrier for the lower sample and is used to switch positions among the lower sample preparation component, the glue dripping unit and the testing unit; The recovery unit is used to cooperate with the sample transfer unit to recover the upper sample and the lower sample after testing; 2. The automatic determination experimental device for the initial adhesion of water-based glue for cigarettes according to claim 1, wherein: Both the upper sample preparation component and the lower sample preparation component include a first material feeding tray, a second material feeding tray, several reversing rollers, a pair of rolling rollers, a clamping mechanism, a cutting mechanism and a grasping mechanism; The first material feeding tray and the second material feeding tray are respectively used to load the disc-shaped tobacco packaging material and the tape with a single-sided adhesive surface exposed; The reversing rollers are used to receive the tape and the tobacco packaging material output from the first material feeding tray and the second material feeding tray and provide a steering and guiding function; A pair of the rolling rollers are arranged downstream of the reversing rollers and are used to paste the exposed surface of the tape and one surface of the tobacco packaging material together by rolling; The clamping mechanism is arranged downstream of the rolling rollers and is used to clamp the distal end of the pasted sample; The cutting mechanism is arranged between the clamping mechanism and the rolling rollers and is used to cut the pasted sample into a fixed size; The grasping mechanism is arranged above or below between the clamping mechanism and the rolling rollers and is used to transfer the pasted sample; The sample prepared by the upper sample preparation component is arranged with the paper surface facing down, and the sample prepared by the lower sample preparation component is arranged with the paper surface facing up.

3. The automated determination experimental device for the initial adhesion of water-based glue for cigarettes according to claim 2, wherein: An upper-mounted suction cup is installed on the rotating arm in the sample transfer unit to adsorb and fix the sample from the bottom of the sample. The rotating arm includes at least two rotating workstations, which are respectively located below the grasping mechanism and below the testing unit; The moving platform cooperates with the grasping mechanism in the lower sample preparation component to grasp and transfer the sample to the upper surface of the moving platform; 4. The automated determination experimental device for the initial adhesion of water-based glue for cigarettes according to claim 3, wherein: The glue dripping unit includes a dispensing machine, a hose, a dispensing syringe, a syringe clamping mechanism and a dispensing lifting mechanism installed on the frame; The dispensing lifting mechanism is integrally installed on the frame. The syringe clamping mechanism is arranged on the slider of the dispensing lifting mechanism. The dispensing syringe is installed in the syringe clamping mechanism. The dispensing machine is connected to the dispensing syringe through a hose, and the glue outlet of the dispensing syringe is arranged downward; 5. The automatic determination experimental device for the initial adhesion of water-based glue for cigarettes according to claim 4, characterized in that: The moving platform includes a translation mechanism, a base installed on the translation mechanism, a movable carrier installed on the base, a calibration mechanism and a negative pressure mechanism that provides negative pressure to the upper surface of the movable carrier; The calibration mechanism includes a lifting component installed on the base and a weighing component arranged at the top of the lifting component. The top of the weighing component serves as a weighing platform for supporting the movable stage. The upper surface of the movable stage is provided with a dense array of negative pressure holes communicating with a negative pressure mechanism for adsorbing and fixing the specimen.

6. The automatic measuring experimental device for the initial adhesion of water-based glue for cigarettes according to claim 5, characterized in that: Vertically arranged support columns are provided on the base opposite to the movable stage, and positioning holes are oppositely arranged on the movable stage. A negative pressure channel is internally arranged in the movable stage, and a negative pressure connection hole is arranged on the lower end surface of the movable stage. The negative pressure mechanism includes a column with negative pressure holes arranged on the base. The top of the column is a flexible adsorption surface corresponding to the negative pressure connection hole of the movable stage, so as to adsorb the lower end surface of the movable stage when the movable stage falls back to its position, and conduct the negative pressure air path. The weighing component is a force sensor with a flat stress surface.

7. The automatic measuring experimental device for the initial adhesion of water-based adhesive for cigarettes according to claim 6, characterized in that: The testing unit includes a pressing head mechanism and a sensor assembly. The pressing head mechanism includes a pressing head lifting component and a pressing head with a flat lower pressing surface. The pressing head lifting component is used to drive the pressing head to lift and lower. A negative pressure channel is arranged in the pressing head, and negative pressure holes are arranged on the lower pressing surface of the pressing head for fixing the upper surface of the specimen. The sensor assembly is integrated in the pressing head mechanism for real-time detection of the change in tensile and compressive force.

8. The automatic determination experimental device for the initial adhesion of water-based glue for cigarettes according to claim 7, wherein: The recovery unit includes a waste bin. A cantilever and a first lower-mounted suction cup are arranged on the waste bin corresponding to the testing unit. The first lower-mounted suction cup is located above the waste bin. The first lower-mounted suction cup cooperates with the rotating arm and the upper-mounted suction cup of the specimen transfer unit to take out the used specimen from the testing unit and transfer it to the waste bin. A waste rotating arm and a second lower-mounted suction cup are arranged on the waste bin corresponding to the dispensing unit. The waste rotating arm and the second lower-mounted suction cup are provided with at least two working positions, including below the testing unit and above the waste bin, for transferring the unqualified dispensed specimen or the dispensed specimen after testing from the moving platform to the waste bin.

9. An experimental method for measuring the initial adhesion of water-based glue for cigarettes, characterized in that: Conducting an experiment based on the automatic determination experimental device for the initial adhesion of tobacco water-based glue according to any one of claims 1-8 includes the following steps: Step 1) Connect the power supply, and inject tobacco water-based glue into the dispenser; install the corresponding tape and tobacco packaging material in the specimen preparation unit respectively. Step 2) Use the specimen transfer unit to cooperate with the upper specimen preparation component to adsorb the front side of the tobacco packaging material to be tested facing downwards at the lower end of the pressing head mechanism to form an upper specimen; use the lower specimen preparation component to cooperate with the moving platform to adsorb the front side of the tobacco packaging material to be tested facing upwards on the upper surface of the moving platform to form a lower specimen. Step 3) Drive the movable stage to the dispensing station below the dispensing mechanism, and the dispensing mechanism dispenses glue on the surface of the lower specimen. Step 4) Drive the calibration mechanism to work to calibrate the weight of a single dispensing. Step 5) Drive the moving platform to the testing station below the pressing head mechanism, set the motion parameters of the pressing head mechanism, as well as the parameter information of the holding pressure, holding time, and separation time after moving in place, and then start the pressing head mechanism to move downwards to paste the front sides of the upper specimen and the lower specimen together, and raise the pressing head mechanism at the separation time to separate the upper specimen and the lower specimen from each other. Step 6) Record the force condition during the separation process of the upper specimen and the lower specimen, and take the maximum force value as the initial adhesion force.

10. The experimental method for measuring the initial adhesion of water-based glue for cigarettes according to claim 9, characterized in that: In step 5), the set parameters include the displacement distance and walking speed in the initial state, as well as the starting pressure, holding pressure, and holding time during the pressing process; for each water-based tobacco adhesive sample, at least three groups are measured, and the arithmetic mean of multiple tests is taken as the test result of a water-based tobacco adhesive sample, and the detection accuracy is at least 0.001 N.

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