Method for improving rolling performance of tipping paper and water absorption testing device applied by method

Abstract

The invention relates to the field of tipping paper analysis and detection, and provides a tipping paper rolling performance improvement method which comprises the following steps: (1) process standard formulation: S1, performing a water absorption test on cigarette tipping paper; s2, testing the tipping paper with different water absorption values on a machine; s3, determining a proper tipping paper water absorption value range corresponding to each tipping paper factory factory on each type of cigarette making machine; s4, setting an internal control process standard for production of the water absorption value of the tipping paper; and S5, continuously tracking and adjusting, and perfecting the internal control process standard. (2) an actual production stage: S6, carrying out a water absorption test on the tipping paper before the tipping paper is put on a machine; s7, selecting a corresponding cigarette making machine according to a factory manufacturer of the tipping paper and the measured water absorption value of the tipping paper in comparison with an internal control process standard; and S8, loading to complete cigarette making operation. On the basis, the rolling forming quality of the tipping paper can be improved and controlled, so that the complaint situation of downstream customers is reduced. In addition, the invention further provides a water absorption testing device applied to the method.

Description

Technical Field

[0001] The present application relates to the field of tipping paper analysis and detection, and in particular to a method for improving the tipping paper winding performance and a water absorption testing device used therein. Background Art

[0002] Tipping paper, also known as "tip paper", is a key specialty paper material in cigarette packaging. It is specifically used to connect cigarettes to filters and occupies an important position in the tobacco industry. The main components of cigarette tipping paper are tipping paper and printing ink. Among them, tipping paper, as the main raw material, has a significant impact on the quality of the finished tipping paper.

[0003] When the tipping paper is put on the machine and rolled and formed with cigarettes, wrinkles, curling, air leakage and paper breakage may occasionally occur. According to relevant tobacco factory regulations, cigarettes with the above-mentioned quality defects are unqualified products. Since it is impossible to conduct full inspections during cigarette production, some unqualified products will inevitably cause customer complaints when they flow to downstream customers, which requires extra attention.

[0004] Analysis revealed that, firstly, cigarettes with wrinkled tipping paper have firmly bonded paper, but still experience wrinkles or folds. This is because the tipping paper has too much glue or absorbs water too slowly, resulting in insufficient moisture and a soft, damp state. When the tipping paper is placed on the machine and rubbed with the washboard, the bond between the tipping paper and the cigarette is insufficient, causing deformation. Furthermore, edge warping, the opposite of wrinkling, occurs when the tipping paper has too little glue or absorbs water too quickly, resulting in over-drying and becoming too dry and hard. This weakens the bond between the tipping paper and the cigarette, leading to partial delamination and warping.

[0005] Secondly, air leakage from the tipping paper is caused by a loose bond between the tipping paper and the cigarette. Furthermore, tipping paper breakage is caused by excessive glue absorption or excessive water absorption after the tipping paper is put on the machine, resulting in excessive moisture and a decrease in tensile strength. Sudden changes in machine speed also cause a sudden change in the paper's conveying speed, leading to vibration and paper breakage. In summary, the above cigarette quality defects are closely related to the tipping paper's water and glue absorption properties.

[0006] It can be seen that tipping paper is primarily composed of paper fibers, fillers, additives, and pigments. Each component affects the water absorption properties of the tipping paper base, which in turn affects the glue absorption properties of the tipping paper. Since the glue absorption and water absorption properties of tipping paper are generally positively correlated, only the water absorption properties can be considered. However, given the significant correlation between the splicing quality of tipping paper and its water absorption properties, how to improve and control the splicing quality of tipping paper to alleviate complaints from downstream customers has become an urgent issue. Summary of the Invention

[0007] Based on this, the present application provides a method for improving the winding performance of piping paper and a water absorption testing device used therein, which can improve and control the winding forming quality of piping paper to reduce complaints from downstream customers and improve market competitiveness.

[0008] In the first aspect, the present application provides a method for improving the performance of tipping paper winding, which adopts the following technical solutions: A method for improving tipping paper winding performance, comprising the following steps: ① Development of process standards: S1. Conduct water absorption test on cigarette tipping paper and collect and analyze the test results; S2. Test tipping paper with different water absorption values ​​on the machine, track the test results of each model of cigarette making machine, and record whether there are any defects in the winding and joining; S3 through repeated machine tests, were found on each model of cigarette machine on each tipping paper factory manufacturers corresponding to the appropriate tipping paper water absorption value range; S4. Develop internal control process standards for the water absorption value of tipping paper production, and implement effective monitoring of the water absorption value of tipping paper used on various models of cigarette making machines; S5. Continuously track the loading of tipping paper onto the machine, provide timely feedback on any splicing defects, and adjust internal control process standards based on the water absorption values ​​recorded when the tipping paper is loaded onto the machine to improve the process standards. ②Actual production stage: S6. Test the water absorption of the cigarette tipping paper used on the machine, and record and file the water absorption value of the tipping paper; S7. Select the appropriate cigarette making machine based on the tipping paper manufacturer and the measured water absorption value of the tipping paper and the internal control process standards; S8. Get on the machine and complete the cigarette rolling operation.

[0009] By adopting the above technical solution, when it is known that the winding performance of the tipping paper is correlated with the water absorption / glue absorption of the tipping paper, water absorption tests are conducted on different tipping papers to obtain determined water absorption / glue absorption performance, which is reflected and recorded by specific water absorption values; then, tipping papers with different water absorption values ​​are subjected to machine tests to determine the winding performance of tipping papers produced by different manufacturers and with different water absorption values ​​on different cigarette making machines. After multiple tests, the appropriate water absorption value range can be determined to obtain the internal control process standard.

[0010] In subsequent actual production, by comparing the manufacturer's model and the range of the internal control process standards for the water absorption value of the tipping paper, a suitable cigarette making machine can be selected. Rolling operations on this cigarette making machine can stabilize the rolling performance of cigarettes, reduce defects such as curling, wrinkling, and air leakage of cigarettes, and improve the adaptability of tipping paper products on cigarette machines, thereby effectively controlling the rolling and forming quality of the tipping paper, reducing complaints from downstream customers, and improving market competitiveness.

[0011] Optionally, the water absorption test method for tipping paper includes the following steps: S61. Test multiple locations of the tipping paper and add 1ul of water droplets to each of the multiple test locations of the tipping paper; S62. The water absorption of each test position is timed, and the time is stopped after the water droplets are absorbed by the tipping paper. The time taken for each test position is read and recorded; S63. Take the average of the test time at each test position, and the obtained time is the water absorption value of the tipping paper.

[0012] By adopting the above technical solution, by quantitatively measuring the time it takes for 1 μl of water to be completely absorbed by the tipping paper, the water absorption and glue absorption properties of the tipping paper can be visualized, so that the operator can effectively control the winding performance of the tipping paper.

[0013] In the second aspect, the present application provides a water absorption test device that adopts the following technical solution: A water absorption test device includes a base assembly, the base assembly is provided with a holding unit for fixing tipping paper, a dripping unit for dripping water onto the tipping paper, and an imaging unit for measuring the water absorption value of the tipping paper; The pressing unit includes a fixed mold base and two sets of first pressing mechanisms. The fixed mold base is fixed to the base assembly and is provided with a first channel for the tipping paper to enter. The two sets of first pressing mechanisms are spaced apart and face the two ends of the first channel respectively. The first pressing mechanism includes a first base platform fixed to the fixed mold base and a first pressing platform movably arranged above the first base platform. The first base platform is provided with a plurality of first rollers partially protruding from the top surface of the first base platform. The first pressing platform is provided with a plurality of second rollers partially protruding from the bottom surface of the first pressing platform. In the initial state, each second roller is respectively in contact with each first roller.

[0014] By adopting the above technical solution, when testing the water absorption of the tipping paper, the tipping paper is inserted into the first channel of the fixed mold base, the tipping paper enters between the first base platform and the first holding platform, and the tipping paper is pressed and positioned by the abutment of the first roller and the second roller. Then, a fixed amount of 1 μl of water is dripped onto the tipping paper by the dripping unit, and the time it takes for the tipping paper to completely absorb the 1 μl of water is observed and recorded by the imaging unit. This allows the water absorption value of the tipping paper to be obtained conveniently and quickly, thereby facilitating subsequent comparison with internal control process standards, and the winding and quality control of the tipping paper.

[0015] Optionally, the pressing unit further includes a movable die base vertically slidably disposed on the base assembly and two sets of second pressing mechanisms fixed to the base assembly, the movable die base abutting against a side surface of the fixed die base, the movable die base being provided with a second channel for the tipping paper to enter, and the two sets of second pressing mechanisms being spaced apart and respectively facing opposite ends of the second channel; The first channel includes a first straight line segment and a first curved segment connected thereto, and the second channel includes a second straight line segment and a second curved segment connected thereto, and the extension direction of the first curved segment is opposite to the extension direction of the second curved segment; the movable mold base is provided with a positioning mechanism for positioning, and in a first usage state, the first straight line segment and the second straight line segment are directly connected, and the first curved segment and the second curved segment are offset from each other; in a second usage state, the first curved segment and the second curved segment are partially directly connected, and the first straight line segment and the second straight line segment are offset from each other, so that the first channel and the second channel are jointly enclosed to form a U-shape.

[0016] By adopting the above-mentioned technical solution, when conducting a water absorption test on the tipping paper, sometimes it is necessary to measure the water absorption value of a single side, while sometimes it is necessary to measure the water absorption value of both sides separately. This application provides a movable die holder and a second holding mechanism. In a first operating state, the first straight line segment and the second straight line segment are directly connected, allowing the winding paper to enter normally for a single-side water absorption test. In addition, in a second operating state, the movable die holder moves downward relative to the fixed die holder and is fixed in position by the positioning mechanism. At this time, the first channel and the second channel can be jointly enclosed to form a U-shape, and the tipping paper can be curled into a U-shape and enter the first channel and the second channel accordingly. At this time, the dripping mechanism can simultaneously perform a water absorption test on both sides of the tipping paper, quickly completing the test and recording the test results to facilitate subsequent winding and splicing operations.

[0017] Optionally, the positioning mechanism includes a fixed base plate fixed to the movable mold base, a limit plug movably connected to the fixed base plate, and a first spring arranged between the limit plug and the fixed base plate, the first spring normally forces the limit plug to move away from the fixed base plate and be exposed on the movable mold base; a limit slot is provided on the side of the fixed mold base close to the movable mold base, and in the first usage state, the limit plug is matched and inserted in the limit slot; in the second usage state, the limit plug is against the bottom surface of the fixed mold base.

[0018] By adopting the above-mentioned technical solution, the setting of the first spring can make the limit plug normally exposed to the movable mold base, so that in the first use state, the limit plug can be smoothly plugged into and positioned in the limit slot, and in the second use state, the movable mold base can rest against the bottom of the limit plug to ensure the normal use of the water absorption testing device.

[0019] Optionally, a mounting stand is fixed on the top of the base assembly, and the second pressing mechanism includes a second base platform fixed to the mounting stand and a second pressing platform movably arranged above the second base platform; the first pressing platform and the second pressing platform are both fixedly connected to an inclined guide column, and the mounting stand is provided with an inclined guide groove, and each inclined guide column is respectively matched and inserted into each inclined guide groove; All the inclined guide columns are commonly connected to an operating member, which is normally in contact with the mounting seat. At this time, the second roller is normally in contact with the first roller. The mounting seat is provided with a retaining mechanism. After the operating member moves outward, the position is maintained by the retaining mechanism. At this time, the second roller is spaced apart from the first roller.

[0020] By adopting the above technical solution, when conducting a water absorbency test, the operator can hold the operating member to force each holding platform to move toward the mounting seat. At this time, the cooperation between the inclined guide column and the inclined guide groove can enable each holding platform to move upward for a distance, and the position is maintained by the holding mechanism, which can facilitate the tipping paper to pass through the first channel and enter between the first roller and the second roller. Then, by forcing the holding mechanism to reset to release the position limit of the operating member, each holding platform can automatically move downward under the action of its own weight, so that the second roller moves toward the first roller and presses and positions the tipping paper.

[0021] Optionally, the retaining mechanism includes a mechanism box fixed to the mounting seat, a plug-in board movably installed inside the mechanism box, and a second spring arranged between the plug-in board and the mechanism box; wherein, the plug-in board is passed through the mechanism box and partially exposed outside the mechanism box, and in an initial state, the plug-in board is normally in contact with the operating member; when the operating member moves in a direction away from the mounting seat, the plug-in board enters between the operating member and the mounting seat.

[0022] By adopting the above technical solution, when the operating member moves in the direction away from the mounting seat, the plug-in plate can automatically enter between the operating member and the mounting seat under the elastic force of the second spring, thereby limiting the reset and retreat of the operating member, so that the first roller and the second roller are kept apart; after the tipping paper enters between the first roller and the second roller, the plug-in plate is moved to leave the area between the operating member and the mounting seat, and the operating member can move again in the direction close to the mounting seat under the action of gravity.

[0023] Optionally, the dripping unit includes two sets of dripping mechanisms, which are fixedly mounted on the fixed mold base and the movable mold base respectively; wherein the dripping mechanism includes a fixed support rod, a plurality of dripping tubes detachably connected to the support rod, and a driving mechanism for driving the dripping tubes to move together, the outer circumference of each dripping tube is connected to a hose via a one-way valve, and the hoses are connected to the liquid storage bottle. Among them, a needle is provided at the bottom end of the dropper tube, a rotating seat is rotatably installed at the top end of the dropper tube, and a driving mechanism is used to drive the rotating seat to rotate; a piston rod is movably inserted inside the dropper tube, and a sealing end is provided at the bottom end of the piston rod, and the outer diameter of the sealing end matches the inner diameter of the dropper tube; an abutment disk is provided at the top end of the piston rod, and the abutment disk is obliquely abutted against the rotating seat; a third spring is provided between the piston rod and the dropper tube, and the third spring is used to force the abutment disk to normally abut against the rotating seat.

[0024] By adopting the above-mentioned technical solution, the hose of the present application is connected to the drip tube via a one-way valve, which is used to deliver water to the drip tube in a one-way manner. During a water absorption test, the third spring normally forces the rotating seat and the abutment disk into an inclined abutment. When the driving mechanism operates to drive the rotating seats to rotate, the rotating seat can gradually force the abutment disk downward, thereby compressing the liquid storage space within the drip tube, forcing water to be squeezed out through the needle and drip onto the tipping paper for water absorption testing. Then, the driving mechanism resets, and the elastic force of the third spring acting on the abutment disk forces the abutment disk upward, thereby causing the mounting seat to return to a state of inclined abutment with the abutment disk. At this time, the liquid storage space within the drip tube gradually increases, and water can enter the hose from the liquid storage bottle and enter the liquid storage space through the one-way valve, facilitating the next water absorption test of the tipping paper.

[0025] Optionally, the driving mechanism includes a fixed hoist, a rope drum connected to an output end of the hoist, and a take-up rope with one end fixed to the rope drum, and the end of the take-up rope away from the turntable is fixed; An extension portion is provided on the top of each rotating seat, and a slot is opened in the extension portion, and a pull rope is passed through each slot; in the initial state, the abutment disk and the rotating seat are in an inclined abutment, and the pull rope is in a relaxed state; when the pull rope is stretched tight, the pull rope forces the rotating seat to rotate, thereby driving the abutment disk to move downward.

[0026] By adopting the above-mentioned technical solution, the take-up rope is passed through the slots of each extension part in turn, and when the abutment disk and the rotating seat are reset to the inclined abutment state, the take-up rope is in a relaxed state; when a water absorption test is required, the winch is controlled to reel in the take-up rope, and the take-up rope is gradually tightened to drive each extension part to rotate, thereby forcing the abutment disk to gradually move downward under the abutment push of the rotating seat, so as to realize the extrusion of dripping liquid from the drip tube.

[0027] Optionally, the imaging unit includes a first camera fixedly mounted on the first holding mechanism, a second camera fixedly mounted on the second holding mechanism, and an industrial control computer communicatively connected to the first camera and the second camera.

[0028] By adopting the above technical solution, the first camera and the second camera are set to respectively capture the water absorption of both sides of the tipping paper. The captured images are transmitted to the industrial control computer, which can be reviewed and judged by the operator or automatically analyzed and judged by the industrial control computer software to obtain the water absorption time required for the test and calculate the water absorption value.

[0029] In summary, this application includes at least one of the following beneficial technical effects: 1. This application has determined the appropriate water absorption value range through multiple tests and analyses, and has determined the internal control process standard. In subsequent actual production, by comparing the manufacturer model and the range of the internal control process standard within which the water absorption value of the tipping paper falls, a suitable cigarette-making machine can be selected. The cigarette-making operation on this cigarette-making machine can stabilize the cigarette-making performance, reduce defects such as edge warping, wrinkling, and air leakage, and thus effectively control the cigarette-making quality of the tipping paper. 2. By measuring the time it takes for 1 μl of water to be completely absorbed by the tipping paper, the water absorption and glue absorption properties of the tipping paper can be visualized, allowing operators to effectively control the tipping paper's winding performance; 3. By setting up a water absorption test device, the water absorption value of the tipping paper can be obtained conveniently and quickly. It is also suitable for testing the water absorption of both sides of the tipping paper, which is convenient for subsequent reference to internal control process standards, machine winding and quality control of the tipping paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 1 is a schematic diagram of the overall structure of the water absorption testing device in this embodiment when used for single-side testing; Figure 2 1 is a front view of the fixed mold base and the movable mold base when the water absorption testing device of this embodiment is used for double-sided testing; Figure 3 Schematic diagram of the structure of the positioning mechanism in this embodiment; Figure 4 Schematic diagram of the overall structure of the water absorption testing device in this embodiment when used for double-sided testing; Figure 5 This is a schematic diagram of the half-section structure of the mounting base in this embodiment, which mainly reflects the coordination relationship between the oblique guide column and the oblique guide groove; Figure 6 yes Figure 5 Enlarged view of point A in the middle; Figure 7This is a schematic diagram of the overall structure of the water absorption testing device in the embodiment when used for double-sided testing in another direction; Figure 8 yes Figure 7 Enlarged view of point B in the middle; Figure 9 2 is a schematic diagram of the half-section structure of the dropper in this embodiment.

[0031] Explanation of Reference Numerals: 1. base assembly; 2. pressing unit; 21. fixed mold base; 211. first fixed mold; 212. second fixed mold; 213. first channel; 214. first straight segment; 215. first curved segment; 216. limiting slot; 22. first pressing mechanism; 221. first substrate platform; 222. first pressing platform; 223. first roller; 224. second roller; 23. Movable mold base; 231. First movable mold; 232. Second movable mold; 233. Second channel; 234. Second straight segment; 235. Second curved segment; 236. Guide column; 24. Second holding mechanism; 241. Second base platform; 242. Second holding platform; 25. Positioning mechanism; 251. Fixed base plate; 252. Limiting plug; 253. First spring; 254. Movable plug; 255. Handle; 26. Inclined guide column; 261. Operating member; 3. Drip unit; 31. Support rod; 32. Drip tube; 321. Needle; 322. Rotating seat; 3221. Extension; 3222. Slot; 323. Piston rod; 324. Sealing end; 325. Abutment plate; 326. Third spring; 327. First ramp; 328. Second ramp; 329. One-way valve; 33. Driving mechanism; 331. Winch; 332. Rope drum; 333. Retraction rope; 34. Hose; 4. Imaging unit; 41. First camera; 42. Second camera; 5. Mounting stand; 51. Inclined guide groove; 52. Holding mechanism; 521. Mechanism box; 522. Plug-in board; 523. Second spring; 524. Toggle portion. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1 -Attached Figure 9 This application is described in further detail. Example 1

[0033] The embodiment of the present application discloses a method for improving the splicing performance of tipping paper.

[0034] A method for improving tipping paper winding performance, comprising the following steps: ① Development of process standards: S1. Conduct water absorption test on cigarette tipping paper and collect and analyze the test results.

[0035] S2. Test tipping papers with different water absorption values ​​on the machine, track the test results of each model of cigarette making machine, and record whether there are any tipping defects.

[0036] S3. Through repeated on-machine tests, we find the appropriate range of water absorption values ​​for each type of tipping paper used by each manufacturer on each type of cigarette making machine, thereby achieving a virtuous cycle, improving the applicability of tipping paper to machines, and ultimately improving cigarette production efficiency and quality.

[0037] S4. Establish internal control process standards for the water absorption value of tipping paper, and effectively monitor the water absorption value of tipping paper used on various types of cigarette making machines. The actual water absorption value of the tipping paper when it is subsequently loaded onto the machine must fall within the range of the internal control process standards.

[0038] S5. Continuously track the loading of tipping paper onto the machine, provide timely feedback on any splicing defects, and adjust internal control process standards based on the water absorption values ​​recorded when the tipping paper is loaded onto the machine to improve the process standards. ②Actual production stage: S6. Before loading onto the machine, conduct a water absorption test on the cigarette tipping paper used on the machine, and record the water absorption value of the tipping paper and keep it on file; the water absorption test specifically includes the following steps.

[0039] S61. Test multiple locations on the tipping paper. Add 1 μl (1 microliter) of water to each test location and let it sit.

[0040] S62. Observe and time the water absorption at each test location. Stop timing after the water droplets are absorbed by the tipping paper. Read and record the time spent at each test location.

[0041] S63. Take the average of the test time at each test position, and the obtained time can be determined as the water absorption value of the tipping paper.

[0042] S7. Based on the manufacturer of the tipping paper and the measured water absorption value of the tipping paper, and in accordance with the internal control process standards and the temperature settings and gluing methods of the splicing and heating systems of various types of cigarette making machines, select the corresponding cigarette making machine to ensure the stability of product quality and adaptability to the machine.

[0043] S8. Get on the machine and use the selected cigarette making machine to complete the cigarette making process of the tipping paper.

[0044] The implementation principle of Example 1 of the present application is: In the actual production process, by comparing the manufacturer's model and the range of the water absorption value of the tipping paper, a suitable cigarette-making machine can be selected, and the corresponding tipping paper can be rolled on the cigarette-making machine. This can stabilize the rolling performance of cigarettes, reduce defects such as curling, wrinkling, and air leakage of cigarettes, and improve the adaptability of tipping paper products on cigarette-making machines. In turn, the rolling and forming quality of the tipping paper can be effectively controlled, reducing complaints from downstream customers and improving market competitiveness. Example 2

[0045] The embodiment of the present application discloses a method for improving the splicing performance of tipping paper.

[0046] Reference Figure 1 A water absorption test device includes a base assembly 1 equipped with a holding unit 2 for securing tipping paper, a dripping unit 3 for dripping water onto the tipping paper, and an imaging unit 4 for measuring the water absorption value of the tipping paper. The holding unit 2 includes a fixed die base 21, a first holding mechanism 22, a movable die base 23, and a second holding mechanism 24. The fixed die base 21 is fixed to the top surface of the base assembly 1, and the movable die base 23 is vertically slidably mounted on the base assembly 1 via vertically arranged guide columns 236.

[0047] Reference Figure 2 The fixed mold base 21 specifically includes a first fixed mold 211 and a second fixed mold 212. The first fixed mold 211 and the second fixed mold 212 are fixedly connected, and are spaced apart from each other to form a first channel 213. The first channel 213 in this embodiment includes a first straight segment 214 and a first curved segment 215 connected to its end. The end of the first straight segment 214 away from the first curved segment passes through to the side of the fixed mold base 21, and the end of the first curved segment 215 away from the first straight segment 214 extends downward and passes through the bottom surface of the fixed mold base 21.

[0048] Furthermore, the movable mold base 23 specifically includes a first movable mold 231 and a second movable mold 232 fixedly connected thereto. The first movable mold 231 and the second movable mold 232 are spaced apart from each other and define a second channel 233. In this embodiment, the second channel 233 includes a second straight segment 234 and a second curved segment 235 connected to the end thereof. The end of the second straight segment 234, remote from the second curved segment 235, extends through the side surface of the movable mold base 23. The end of the second curved segment 235, remote from the second straight segment 234, extends upward and through the top surface of the movable mold base 23. As can be seen from the above, the second curved segment 235 extends in the opposite direction to that of the first curved segment 215.

[0049] Back to Figure 1 , a positioning mechanism 25 is provided on the side of the movable mold base 23 for positioning; Figure 3The positioning mechanism 25 includes a fixed base plate 251, a limiting plug 252, and a first spring 253. The fixed base plate 251 is fixed to the movable mold base 23. A plurality of movable insertion holes are provided through the side of the fixed base plate 251. The limiting plug 252 is slidably mounted on the movable mold base 23. A plurality of movable pins 254 are fixedly connected to the side of the limiting plug 252. The movable pins 254 are matingly inserted into the movable insertion holes and can move axially within the movable insertion holes. A handle 255 is commonly mounted on the ends of all movable pins 254. The first spring 253 is sleeved on the movable pins 254, with one end of the first spring 253 abutting against the fixed base plate 251 and the other end abutting against the limiting plug 252. The first spring 253 can constantly generate an elastic force acting on the limiting plug 252, thereby forcing the limiting plug 252 to normally move away from the fixed base plate 251 and outward from the movable mold base 23.

[0050] The side of the fixed mold base 21 close to the movable mold base 23 is provided with a limiting slot 216, and the shape of the limiting slot 216 is the same as the shape of the limiting slot block, so that the limiting plug block 252 can be matched and inserted into the limiting slot 216. Figure 2 It should be noted that the water absorbency test of the tipping paper may be performed on a single surface or on both surfaces. In the first state of use, the limiting insert 252 is located opposite the limiting slot 216. Under the elastic force of the first spring 253, the limiting insert 252 can be matched and inserted into the limiting slot 216, thereby keeping the movable mold base 23 fixed. At this time, the first straight segment 214 and the second straight segment 234 are oppositely connected, and the tipping paper can be inserted into the first straight segment 214 and the second straight segment 234, so that the water absorbency testing device can perform a single-sided water absorbency test.

[0051] Furthermore, in the second operating state, the movable mold base 23 moves downward under its own weight until it rests against the top surface of the base assembly 1. The limiting insert 252 then rests against the bottom surface of the fixed mold base 21, restricting the movement of the movable mold base 23 and keeping it stationary. At this point, the first straight segment 214 and the second straight segment 234 are offset from each other, while the first curved segment 215 and the second curved segment 235 are partially aligned and connected, forming a U-shape between the first channel 213 and the second channel 233. Consequently, by bending the tipping paper into a U-shape, the tipping paper can be inserted into both the first channel 213 and the second channel 233, enabling the water absorbency testing device to simultaneously perform water absorbency tests on both sides.

[0052] Reference Figure 4Two sets of first pressing mechanisms 22 are provided, spaced apart and facing each end of the first straight segment 214. The first pressing mechanisms 22 include a first substrate table 221 and a first pressing table 222. A mounting stand 5 is fixed to the top surface of the base assembly 1. The first substrate table 221 is fixedly connected to the mounting stand 5, thereby securing the first substrate table 221 to the base assembly 1. The first substrate table 221 has a plurality of freely rotatable first rollers 223 built into it. All first rollers 223 are equidistantly spaced along the extension of the first substrate table 221, and each first roller 223 partially protrudes from the top surface of the first substrate table 221.

[0053] The first pressing platform 222 is movably disposed above the first base platform 221 and contains a plurality of freely rotatable second rollers 224. All second rollers 224 are equidistantly spaced along the extension of the first pressing platform 222, and each second roller 224 partially protrudes from the bottom surface of the second base platform 241. In its initial state, the first pressing platform 222 automatically moves downward under its own gravity, causing the second rollers 224 to rest against the first rollers 223, thereby pressing and positioning the paper bundle.

[0054] Two sets of second pressing mechanisms 24 are provided. These two sets of second pressing mechanisms 24 are spaced apart and located directly below the two sets of first pressing mechanisms 22. In the second operating state, the two sets of second pressing mechanisms 24 can be aligned with the ends of the second straight segment 234. In this embodiment, the second pressing mechanism 24 includes a second base platform 241 fixed to the base assembly 1 and a second pressing platform 242 movably disposed above the second base platform 241. The specific structural design of the second pressing mechanism 24 is identical to that of the first pressing mechanism 22 and will not be further described here. The second pressing mechanism 24 is used to cooperate with the first pressing mechanism 22 to press and position the U-shaped tipping paper.

[0055] Reference Figure 5The side of the first pressing platform 222 away from the fixed mold base 21 and the side of the second pressing platform 242 away from the fixed mold base 21 are both fixed with inclined guide columns 26, and the inclined guide columns 26 extend upward from one end close to the first pressing platform 222 / the second pressing platform 242 to the other end; the mounting base 5 is provided with an inclined guide groove 51, and each inclined guide column 26 is respectively matched and inserted into each inclined guide groove 51, and the inclined guide column 26 can move in the inclined guide groove 51. The sides of all the inclined guide columns 26 away from the first pressing platform 222 / the second pressing platform 242 are commonly connected to an operating member 261, and the operating member 261 is located on the side of the mounting seat 5 away from the first pressing platform 222 / the second pressing platform 242; when the first pressing platform 222 and the second pressing platform 242 are acted upon by gravity, the inclined guide columns 26 move downward along the inclined guide groove 51, and the operating member 261 eventually naturally abuts against the mounting seat 5, so that the second roller 224 naturally abuts against the first roller 223.

[0056] Reference Figure 6 The mounting base 5 is also provided with a holding mechanism 52, which includes a mechanism box 521, a plug-in board 522 and a second spring 523. The mechanism box 521 is fixed to the mounting base 5, and an activity space is provided inside the mechanism box 521, and a connecting port connected to the activity space is provided on the side of the mechanism box 521; the plug-in board 522 is movably installed inside the activity space, and the second spring 523 is provided inside the activity space, one end of the second spring 523 is pressed against the inner wall of the activity space, and the other end is pressed against the side of the plug-in board 522; the second spring 523 can always generate an elastic force acting on the plug-in board 522, thereby forcing the plug-in board 522 to pass through the connecting port and be partially exposed to the mechanism box 521.

[0057] It should be noted here that the communication port of the mechanism box 521 is arranged opposite to the operating member 261. When the operator acts on the operating member 261 and forces the operating member 261 to move away from the mounting seat 5, the plug-in plate 522 can automatically enter between the operating member 261 and the mounting seat 5 under the elastic force of the second spring 523, restricting the resetting and retreat of the operating member 261, thereby achieving the position maintenance of the first pressing platform 222 and the second pressing platform 242, so that the first roller 223 and the second roller 224 are kept at a distance from each other, so as to facilitate the entry of the tipping paper into the area between the first roller 223 and the second roller 224.

[0058] In addition, an integrally formed toggle portion 524 is provided on the side of the plug plate 522. A structural slot communicating with the movable space is provided on the side of the mechanism box 521. The toggle portion 524 can pass through the structural slot and be exposed outside the mechanism box 521. When the tipping paper enters the area between the first roller 223 and the second roller 224, the operator can apply force to the toggle portion 524 to force the plug plate 522 out of the area between the operating member 261 and the mounting stand 5. At this point, the operating member 261 can move toward the mounting stand 5 under the action of gravity, allowing the second roller 224 to smoothly abut against the first roller 223, thereby pressing and positioning the tipping paper.

[0059] Reference Figure 7 The dripping unit 3 includes two dripping mechanisms, which are fixed to the fixed mold base 21 and the movable mold base 23, respectively. It should be noted that in the first operating state, the two dripping units 3 are located above the first holding mechanism 22 and can jointly test the water dripping of the tipping paper. In the second operating state, the dripping unit 3 fixed to the movable mold base 23 can be moved below the first holding mechanism 22 and located above the second holding mechanism 24. At this time, the two dripping units 3 can respectively test the water dripping on both sides of the tipping paper, thereby quickly obtaining the water absorption value of both sides of the tipping paper.

[0060] Also refer to Figure 8 The dripping mechanism includes a support rod 31, a dripping tube 32, and a drive mechanism 33. The support rod 31 is fixedly mounted on the fixed mold base 21 or the movable mold base 23. The support rod 31 has multiple mounting slots, all of which are equidistantly spaced along the axis of the support rod 31. There are multiple dripping tubes 32, each mounted in a corresponding mounting slot. The outer circumference of each dripping tube 32 is connected to a hose 34 via a one-way valve 329. These hoses 34 are connected to a liquid storage bottle, enabling one-way water delivery to the liquid storage space within the dripping tube 32.

[0061] Specific reference Figure 9 The bottom of the dropper 32 is provided with a needle 321, and the top of the dropper 32 is rotatably mounted with a rotating seat 322. A piston rod 323 is movably inserted into the dropper 32, and an integrally formed sealing end 324 is provided at the bottom end of the piston rod 323. The outer diameter of the sealing end 324 is set equal to the inner diameter of the dropper 32, so that a sealed liquid storage space is formed between the sealing end 324 and the inner bottom wall of the dropper 32. In this embodiment, the piston rod 323 has a rectangular cross-section. The dropper 32 is provided with a baffle for the piston rod 323 to pass through. Based on this, the rotation of the piston rod 323 is restricted by the baffle, and the piston rod 323 can only move along the axis of the dropper 32. The end of the piston rod 323 away from the sealing end 324 is provided with an integrally formed abutment plate 325.

[0062] In addition, a third spring 326 is provided between the piston rod 323 and the drip tube 32. One end of the third spring 326 abuts against the abutment disc 325, and the other end abuts against the baffle. The third spring 326 can constantly generate an elastic force acting on the abutment disc 325, thereby forcing the abutment disc 325 to normally abut against the rotating seat 322. It should be noted that an integrally formed first ramp 327 is provided at the bottom of the rotating seat 322, and an integrally formed second ramp 328 is provided at the top of the abutment disc 325. In the initial state, the inclined surface of the first ramp 327 can be in oblique abutment with the inclined surface of the second ramp 328.

[0063] Also refer to Figure 8 All drip tubes 32 within the same drip mechanism group are driven to rotate together by a drive mechanism 33. The drive mechanism 33 comprises a hoist 331, a rope drum 332, and a take-up rope 333. The hoist 331 is fixed to the mounting base 5, and the rope drum 332 is fixedly mounted to the output end of the hoist 331. One end of the take-up rope 333 is fixedly connected to the rope drum 332, and the other end is fixedly connected to the fixed mold base 21 / movable mold base 23. Each rotating base 322 has an integrally formed extension 3221 at the top. This extension 3221 has transversely extending slots 3222 extending therethrough, allowing the take-up rope 333 to be sequentially inserted through each slot 3222.

[0064] When the bottle 32 is in the closed position, the bottle 32 is in the closed position, and the bottle 32 is in the closed position, so the bottle 32 is in the closed position.

[0065] Then, by resetting and rotating the winch 331, the draw rope 333 gradually returns to a relaxed state, and the abutment plate 325 can move upward and reset under the elastic force of the third spring 326. The inclined abutment between the first inclined platform 327 and the second inclined platform 328 can rotate and reset the rotating seat 322, so that water can be re-added to the liquid storage space through the one-way valve 329, which is beneficial for the next water absorption test.

[0066] It should be noted here that, considering that the liquid storage space inside the dropper 32 is normally kept in a sealed state, the abutment disk 325 has a large resistance when moving upward to reset, and the resetting rotation of the rotating seat 322 may not be smoothly achieved only by the elastic force of the third spring 326; according to actual usage, in order to ensure the smooth rotation and reset of the rotating seat 322, the one-way valve 329 can be set as an elastic core member, and a power pump can be added between each hose 34 and the liquid storage bottle. The power pump is used to pump liquid into the dropper, and the pumping force of the power pump and the elastic force of the third spring 326 can jointly force the abutment disk 325 to move upward to achieve the rotation and reset of the rotating seat 322.

[0067] Back to Figure 7 、 Figure 8 The imaging unit 4 includes a first camera 41, a second camera 42, and an industrial control computer. The first camera 41 is fixedly mounted on the mounting stand 5, and the second camera 42 is fixedly mounted on the second base platform 241. Both the first camera 41 and the second camera 42 are communicatively connected to the industrial control computer. It will be appreciated that when testing a single side of tipping paper, the second camera 42 can capture images and read the water absorption value in real time. When testing both sides of tipping paper, the first camera 41 and the second camera 42 can capture and read images of both sides, respectively.

[0068] Taking a single-sided test as an example, when the water absorption test device is in use, the second camera 42 can capture the area between the first pressing mechanism 22 and the second pressing mechanism 24, and transmit the captured image in real time to the industrial control computer and display it on the monitor. The position below each dropper 32 is taken as the test position, and the operator can be arranged to visually observe the water absorption condition of each test position.

[0069] The timing starts at the moment winch 331 activates. The winch 331 drives the rotating disk to squeeze 1 μl of water out of the drip tube 32. The water absorption at each test location is observed. When the water at each test location is completely absorbed, the test time can be calculated. This test time is automatically recorded by the industrial control computer. After all test locations have been timed, the industrial control computer automatically calculates the average of all test times, automatically obtaining and recording the water absorption value. Although the water absorption value measured using this method has some error, the error is within a controllable range and will not cause quality defects.

[0070] To automate testing, the software within the industrial control system can be optimized and upgraded to automatically terminate the timer the moment the water at the test location is completely absorbed, eliminating the need for manual operation. However, this method provides higher image quality and judgment accuracy. However, inaccurate judgments can lead to increased errors in water absorption values, so the appropriate method should be selected based on actual production testing needs.

[0071] The implementation principle of Example 2 of this application is: In the first usage state of the water absorption testing device of the present application, the first straight section 214 and the second straight section 234 are directly connected to each other, allowing the winding paper to enter normally for a single-sided water absorption test. In the second usage state, the movable mold base 23 moves downward relative to the fixed mold base 21 and is fixed in position by the positioning mechanism 25. At this time, the first channel 213 and the second channel 233 can be jointly enclosed to form a U-shape, and the winding paper can be correspondingly curled into a U-shape and enter the first channel 213 and the second channel 233. The dripping mechanism can simultaneously perform a water absorption test on both sides of the winding paper, thereby quickly completing the test and recording the test results to facilitate subsequent winding and splicing operations.

[0072] The above are preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A method for improving the performance of tipping paper, characterized in that: The following steps are involved: ① Development of process standards: S1. Conduct water absorption test on cigarette tipping paper and collect and analyze the test results; S2. Test tipping paper with different water absorption values ​​on the machine, track the test results of each model of cigarette making machine, and record whether there are any defects in the winding and joining; S3 through repeated machine tests, were found on each model of cigarette machine on each tipping paper factory manufacturers corresponding to the appropriate tipping paper water absorption value range; S4. Develop internal control process standards for the water absorption value of tipping paper production, and implement effective monitoring of the water absorption value of tipping paper used on various models of cigarette making machines; S5. Continuously track the loading of tipping paper onto the machine, provide timely feedback on any splicing defects, and adjust internal control process standards based on the water absorption values ​​recorded when the tipping paper is loaded onto the machine to improve the process standards. ②Actual production stage: S6. Test the water absorption of the cigarette tipping paper used on the machine, and record and file the water absorption value of the tipping paper; S7. Select the appropriate cigarette making machine based on the tipping paper manufacturer and the measured water absorption value of the tipping paper and the internal control process standards; S8. Get on the machine and complete the cigarette rolling operation.

2. The method for improving tipping paper splicing performance according to claim 1, characterized in that: The water absorption test method used for tipping paper includes the following steps: S61. Test multiple locations of the tipping paper and add 1ul of water droplets to each of the multiple test locations of the tipping paper; S62. The water absorption of each test position is timed, and the time is stopped after the water droplets are absorbed by the tipping paper. The time taken for each test position is read and recorded; S63. Take the average of the test time at each test position, and the obtained time is the water absorption value of the tipping paper.

3. A water absorption testing device used in the tipping paper splicing performance improvement method according to claim 2, characterized in that: The invention comprises a base assembly (1), wherein the base assembly (1) is provided with a pressing unit (2) for fixing the tipping paper, a dripping unit (3) for dripping water onto the tipping paper, and an imaging unit (4) for measuring the water absorption value of the tipping paper; The pressing unit (2) comprises a fixed die seat (21) and two groups of first pressing mechanisms (22); the fixed die seat (21) is fixed to the base assembly (1); the fixed die seat (21) is provided with a first channel (213) for the tipping paper to enter; the two groups of the first pressing mechanisms (22) are arranged at intervals and are respectively opposite to the two ends of the first channel (213); The first pressing mechanism (22) comprises a first base platform (221) fixed to the fixed mold base (21) and a first pressing platform (222) movably arranged above the first base platform (221); the first base platform (221) is provided with a plurality of first rollers (223) partially protruding from the top surface of the first base platform (221); the first pressing platform (222) is provided with a plurality of second rollers (224) partially protruding from the bottom surface of the first pressing platform (222); in an initial state, each of the second rollers (224) is in contact with each of the first rollers (223) respectively.

4. The water absorption testing device according to claim 3, wherein: The holding unit (2) further comprises a movable die seat (23) vertically slidably arranged on the base assembly (1) and two sets of second holding mechanisms (24) fixed to the base assembly (1), wherein the movable die seat (23) abuts against the side surface of the fixed die seat (21), and the movable die seat (23) is provided with a second channel (233) for the entry of the tipping paper, and the two sets of the second holding mechanisms (24) are spaced apart and respectively face the two ends of the second channel (233); The first channel (213) includes a first straight segment (214) and a first curved segment (215) connected thereto; the second channel (233) includes a second straight segment (234) and a second curved segment (235) connected thereto; the extension direction of the first curved segment (215) is opposite to the extension direction of the second curved segment (235); the movable mold base (23) is provided with a positioning mechanism (25) for positioning; in a first use state, the first straight segment (214) and the second straight segment (234) are directly opposite to each other and communicate with each other, and the first curved segment (215) and the second curved segment (235) are offset from each other; in a second use state, the first curved segment (215) and the second curved segment (235) are partially directly opposite to each other and communicate with each other, and the first straight segment (214) and the second straight segment (234) are offset from each other, so that the first channel (213) and the second channel (233) are enclosed together to form a U-shape.

5. The water absorption testing device according to claim 4, characterized in that: The positioning mechanism (25) comprises a fixed base plate (251) fixed to the movable die seat (23), a limiting plug block (252) movably connected to the fixed base plate (251), and a first spring (253) arranged between the limiting plug block (252) and the fixed base plate (251), wherein the first spring (253) normally forces the limiting plug block (252) to move away from the fixed base plate (251) and be exposed outside the movable die seat (23); a limiting slot (216) is provided on the side of the fixed die seat (21) close to the movable die seat (23); in a first use state, the limiting plug block (252) is matched and inserted into the limiting slot (216); in a second use state, the limiting plug block (252) is in contact with the bottom surface of the fixed die seat (21).

6. The water absorption testing device according to claim 4, characterized in that: A mounting stand (5) is fixed on the top of the base assembly (1); the second pressing mechanism (24) comprises a second base platform (241) fixed to the mounting stand (5) and a second pressing platform (242) movably arranged above the second base platform (241); the first pressing platform (222) and the second pressing platform (242) are both fixedly connected with an inclined guide column (26); the mounting stand (5) is provided with an inclined guide groove (51) arranged obliquely, and each of the inclined guide columns (26) is respectively matched and inserted into each inclined guide groove (51); All the inclined guide columns (26) are commonly connected to an operating member (261), and the operating member (261) is normally in contact with the mounting seat (5), at which time the second roller (224) is normally in contact with the first roller (223); the mounting seat (5) is provided with a retaining mechanism (52), and after the operating member (261) moves outward, the position is maintained by the retaining mechanism (52), and at this time the second roller (224) and the first roller (223) are spaced apart.

7. The water absorption testing device according to claim 6, characterized in that: The holding mechanism (52) comprises a mechanism box (521) fixed to the mounting seat (5), a plug-in plate (522) movably mounted inside the mechanism box (521), and a second spring (523) arranged between the plug-in plate (522) and the mechanism box (521); wherein the plug-in plate (522) is inserted into the mechanism box (521) and partially exposed outside the mechanism box (521); in an initial state, the plug-in plate (522) is normally in contact with the operating member (261); when the operating member (261) moves in a direction away from the mounting seat (5), the plug-in plate (522) enters between the operating member (261) and the mounting seat (5).

8. The water absorption testing device according to claim 4, wherein: The dripping unit (3) comprises two groups of dripping mechanisms, and the two groups of dripping mechanisms are respectively fixedly mounted on the fixed mold base (21) and the movable mold base (23); wherein the dripping mechanism comprises a fixed support rod (31), a plurality of dripping tubes (32) detachably connected to the support rod (31), and a driving mechanism (33) for driving the dripping tubes (32) to move together, and the outer peripheral surface of each dripping tube (32) is connected to a hose (34) through a one-way valve (329), and each of the hoses (34) is connected to the liquid storage bottle. The bottom end of the dropper (32) is provided with a needle (321), the top end of the dropper (32) is rotatably mounted with a rotating seat (322), and the driving mechanism (33) is used to drive the rotating seat (322) to rotate; a piston rod (323) is movably inserted inside the dropper (32), the bottom end of the piston rod (323) is provided with a sealing end (324), the outer diameter of the sealing end (324) matches the inner diameter of the dropper (32); the top end of the piston rod (323) is provided with an abutment disk (325), and the abutment disk (325) is inclinedly abutted against the rotating seat (322); a third spring (326) is provided between the piston rod (323) and the dropper (32), and the third spring (326) is used to force the abutment disk (325) to normally abut against the rotating seat (322).

9. The water absorption testing device according to claim 8, characterized in that: The driving mechanism (33) includes a fixed hoist (331), a rope drum (332) connected to the output end of the hoist (331), and a draw rope (333) with one end fixed to the rope drum (332), wherein the draw rope (333) is fixed at one end away from the rotating disk; An extension portion (3221) is provided on the top of each rotating seat (322), and a slot (3222) is opened in the extension portion (3221), and the pull rope (333) is passed through each slot (3222); in the initial state, the abutment disk (325) and the rotating seat (322) are in inclined abutment, and the pull rope (333) is in a relaxed state; when the pull rope (333) is stretched, the pull rope (333) forces the rotating seat (322) to rotate, thereby driving the abutment disk (325) to move downward.

10. The water absorption testing device according to claim 4, characterized in that: The imaging unit (4) comprises a first camera (41) fixedly mounted on the first holding mechanism (22), a second camera (42) fixedly mounted on the second holding mechanism (24), and an industrial control computer communicatively connected to the first camera (41) and the second camera (42).

Images