A method of cutting window filter tip paper

Abstract

The present application relates to the technical field of tipping paper cutting, and discloses a window filter tipping paper cutting method, which comprises the following steps: cutting a tipping paper band into three narrow bands and sending the three narrow bands to a cutting wheel insert; the insert is provided with a negative pressure adsorption area and an auxiliary adsorption area located upstream; before cutting, the auxiliary adsorption area is made to generate negative pressure through a gas distribution disc; at the moment of cutting, the auxiliary adsorption area maintains negative pressure to prevent the cutting end from rebounding; after cutting, an oscillating roller pulls back the narrow bands, so that the cutting end enters the negative pressure adsorption area; when the cutting end moves away from the auxiliary adsorption area during the pulling back, the gas distribution disc disconnects the negative pressure of the auxiliary adsorption area, and then only the negative pressure adsorption area adsorbs the narrow bands. The present application is used to solve the problem that the cutting end of the narrow band rebounds and rises seriously in the direction away from the cutting wheel after the three narrow bands are cut.

Description

Technical Field

[0001] This invention relates to the field of tipping paper cutting technology, and more particularly to a method for cutting tipping paper for windowed filter nozzles. Background Technology

[0002] In cigarette production, the tipping paper of cigarettes with transparent window sections needs to be first cut and separated into three parallel narrow strips, and then cut into individual pieces. During cutting, the three narrow strips are more prone to stress concentration and instantaneous release at the cut point compared to the whole tipping paper, causing the cut end to bounce back and lift significantly away from the cutting roller.

[0003] Traditional cutting methods only apply negative pressure to the cutting roller, covering the entire adsorption area. After cutting, although the paper strip is pulled back by the vibrating roller and re-adsorbed by the negative pressure area, the violent rebound at the moment of cutting makes the paper strip prone to tension imbalance and shaking or skewing during the pull-back process. This ultimately leads to defects in the appearance of the finished cigarettes, such as misaligned splicing paper, inconsistent overlap width, and wrinkled tips, seriously affecting the product qualification rate of window filter cigarettes. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method for cutting the paper for the window filter tip, which solves the problem in the prior art that after the three narrow strips are cut, the cut ends of the narrow strips will rebound and curl up in a direction away from the paper cutting wheel.

[0005] The present invention solves the above-mentioned technical problems through the following technical means:

[0006] A method for cutting the paper for a window filter tip includes the following steps:

[0007] A single splicing tape is cut into three parallel narrow tapes;

[0008] The three narrow strips after slitting are fed to the surface of the insert of the paper cutting wheel. The narrow strips are adsorbed and fixed by the negative pressure adsorption area on the insert. The insert is also provided with an auxiliary adsorption area, which is located in front of the negative pressure adsorption area along the rotation direction of the paper cutting wheel.

[0009] The paper cutting wheel is driven to rotate, which moves the narrow strip to the cutting position;

[0010] Before the narrow strip reaches the cutting position, the air distribution plate of the paper cutting wheel connects the air intake channel on the paper cutting wheel that connects to the auxiliary adsorption area with the negative pressure source, so that the auxiliary adsorption area begins to generate negative pressure.

[0011] At the moment the narrow strip is cut by the cutter at the cutting position, the auxiliary adsorption area maintains a negative pressure to adsorb and fix the cut end of the narrow strip to the surface of the insert, preventing the cut end from rebounding and lifting.

[0012] After cutting, the narrow strip is pulled back a preset distance by the vibrating roller, so that the cut end moves into the range of the negative pressure adsorption zone and is adsorbed and fixed by the negative pressure adsorption zone;

[0013] During the pull-back process, the auxiliary adsorption zone continues to maintain negative pressure. When the cutting end moves away from the auxiliary adsorption zone, the air distribution plate disconnects the air intake channel from the negative pressure source, so that the auxiliary adsorption zone stops generating negative pressure.

[0014] During the pull-back and subsequent transport process, the adsorption is maintained only by the negative pressure adsorption zone until the narrow strip separates from the insert.

[0015] Furthermore, the gas distribution plate is provided with a first gas distribution groove, a second gas distribution groove and an auxiliary gas distribution groove. The first and second gas distribution grooves are used to provide negative pressure for the negative pressure adsorption zone. When the air intake channel of the auxiliary adsorption zone enters the range of the auxiliary gas distribution groove during the rotation of the paper cutting wheel, it is connected to the negative pressure source, and when it leaves the range of the auxiliary gas distribution groove, it is disconnected from the negative pressure source.

[0016] Furthermore, the paper cutting wheel is evenly distributed with multiple inserts along its circumference. During continuous cutting, when the air intake channel corresponding to the previous insert is about to leave the range of the auxiliary air distribution groove, the air intake channel corresponding to the next insert simultaneously enters the auxiliary air distribution groove, so that the total cross-sectional area of ​​the airflow channels in the auxiliary air distribution groove remains stable.

[0017] Furthermore, the paper cutting wheel is evenly distributed with multiple inserts along its circumference. During continuous cutting, when the air intake channel corresponding to the previous insert is about to leave the range of the auxiliary air distribution groove, the air intake channel corresponding to the next insert simultaneously enters the auxiliary air distribution groove, so that the total cross-sectional area of ​​the airflow channels in the auxiliary air distribution groove remains stable.

[0018] Furthermore, the preset distance is set according to the circumference of the cigarette to be rolled, so that the length of the cut single piece of splicing paper matches the circumference of the cigarette.

[0019] Furthermore, the negative pressure adsorption zone includes several rows of negative pressure adsorption holes arranged along the axial direction of the paper cutting wheel, and the auxiliary adsorption zone includes at least one row of auxiliary adsorption holes. The auxiliary adsorption holes are connected to the air intake channel, and the length of the auxiliary adsorption zone along the rotation direction of the paper cutting wheel is less than the length of the negative pressure adsorption zone along the rotation direction of the paper cutting wheel.

[0020] Furthermore, when the cut end of the narrow strip is about to detach from the row of adsorption holes at the front end of the auxiliary adsorption zone during the process of being pulled back, the air intake channel connecting the auxiliary adsorption zone leaves the range of the auxiliary air distribution groove, so that the auxiliary adsorption zone stops generating negative pressure.

[0021] Furthermore, the negative pressure adsorption zone and the auxiliary adsorption zone are divided into three adsorption units along the paper cutting wheel axis. Each adsorption unit is corresponding to adsorb a slit narrow strip, and the width of the adsorption unit along the paper cutting wheel axis is smaller than the width of the corresponding narrow strip.

[0022] The beneficial effects of this invention are:

[0023] 1. This invention generates negative pressure in the auxiliary adsorption area before cutting, maintains this negative pressure during the cutting moment, and continues to maintain it during the pull-back process until the cutting end moves away from the auxiliary adsorption area and then disconnects. This ensures that the cutting end of the narrow strip is always constrained by negative pressure throughout the entire process of cutting, pulling back, and subsequent conveying, effectively preventing the cutting end from rebounding and tilting. At the same time, it avoids the auxiliary negative pressure from interfering with subsequent conveying, thereby improving the stability and positioning accuracy of narrow strip conveying.

[0024] 2. This invention utilizes a first gas distribution slot and an auxiliary gas distribution slot on a gas distribution plate. The suction channel, as it rotates with the paper-cutting wheel, enters or leaves the range of the auxiliary gas distribution slot to control the on / off of the negative pressure in the auxiliary adsorption zone. This eliminates the need for solenoid valves or independent control circuits, making the control method simple and reliable. Simultaneously, the first gas distribution slot is dedicated to the negative pressure adsorption zone, allowing the main adsorption and auxiliary adsorption to be independently controlled without interference. Furthermore, the auxiliary gas distribution slot is connected to the first gas distribution slot, with the same negative pressure source providing negative pressure to the auxiliary gas distribution slot through the first gas distribution slot. This simplifies the negative pressure gas path, eliminates the need for a separate negative pressure source for the auxiliary adsorption zone, and reduces implementation costs.

[0025] 3. During continuous cutting, the present invention ensures that when the previous air intake channel exits the auxiliary air distribution groove, the next air intake channel enters simultaneously, maintaining the stability of the total cross-sectional area of ​​the airflow channels in the auxiliary air distribution groove. This avoids sudden changes in cross-sectional area and sudden changes in airflow speed caused by channel switching, thereby ensuring that the auxiliary adsorption force is stable and without fluctuations during high-speed continuous operation, improving production reliability and product consistency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the cutting process in an embodiment of the present invention;

[0027] Figure 2 This is a three-dimensional schematic diagram of the cutting state in an embodiment of the present invention;

[0028] Figure 3 This is a planar schematic diagram of the cutting state in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the layout of the insert adsorption area in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram illustrating the cooperative relationship between the paper cutting wheel, the air distribution plate, and the insert in an embodiment of the present invention;

[0031] Figure 6This is a schematic diagram of the layout of the air suction channel on the paper cutting roller in an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the layout of the air distribution grooves on the air distribution plate in an embodiment of the present invention;

[0033] Figure 8 This is a schematic diagram of the cooperation between the paper cutting wheel and the insert in an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the cooperation between the air distribution plate and the cutter roller in an embodiment of the present invention;

[0035] in,

[0036] 2. Paper cutting roller; 21. First air intake channel; 211. First air intake hole; 22. Second air intake channel; 221. Second air intake hole;

[0037] 3. Insert; 31. Negative pressure adsorption zone; 311. Negative pressure adsorption hole; 32. Auxiliary adsorption zone; 321. Auxiliary adsorption hole;

[0038] 4. Valve distribution plate; 41. First valve distribution slot; 42. Second valve distribution slot; 43. Auxiliary valve distribution slot; 44. Third valve distribution slot; 45. Fourth valve distribution slot;

[0039] 5. Splicing paper tape; 51. Narrow tape;

[0040] 6. Cutting roller; 61. Cutting knife;

[0041] 8. Vibrating roller. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] like Figures 1-9 As shown, this embodiment provides a method for cutting the paper for the window filter tip, including the following steps:

[0044] Step 1: Cut and splice 5 pieces of paper tape

[0045] like Figure 1 and Figure 2As shown, a single feeding paper tape 5 is cut into three parallel narrow tapes 51. The cutting action is performed by a cutting assembly located upstream of the cutting roller 2, which uses a disc cutter. After cutting, the two narrow tapes 51 on both sides are separated from the narrow tape 51 in the middle by a predetermined gap, so that the gap between two adjacent narrow tapes 51 corresponds to the transparent window segment of the cigarette. The width of this gap is determined according to the design dimensions of the transparent window segment. The three narrow tapes 51 are kept parallel to each other after cutting, and the spacing between them remains unchanged during subsequent conveying.

[0046] Step 2: Conveying and adsorbing narrow band 51

[0047] like Figure 2 As shown, the three narrow strips 51 after slitting are conveyed to the surface of the insert 3 of the paper cutting wheel 2. Multiple inserts 3 are evenly distributed along the circumference of the paper cutting wheel 2. In this embodiment, there are twelve inserts 3. Each insert 3 is detachably fixed to the outer circumferential surface of the paper cutting wheel 2 by screws, which is convenient for replacement after wear.

[0048] like Figures 3-5 As shown, each insert 3 has a negative pressure adsorption area 31 and an auxiliary adsorption area 32 on its outer surface. Along the rotation direction of the paper cutting wheel 2 (clockwise in this embodiment), the auxiliary adsorption area 32 is located before the negative pressure adsorption area 31, meaning the auxiliary adsorption area 32 reaches the cutting position before the negative pressure adsorption area 31 (see reference). Figure 3 (The location indicated by A in the middle).

[0049] After the narrow strip 51 is conveyed to the surface of the insert 3, it is adsorbed and fixed by the negative pressure adsorption zone 31. The negative pressure adsorption zone 31 includes several rows of negative pressure adsorption holes 311 arranged along the axial direction of the paper cutting roller 2; in this embodiment, it is set to four rows. The auxiliary adsorption zone 32 includes at least one row of auxiliary adsorption holes 321; in this embodiment, it is set to two rows. The auxiliary adsorption holes 321 are connected to the air intake channel of the auxiliary adsorption zone 32 inside the insert 3.

[0050] Specifically, the inside of the paper cutting wheel 2 is provided with a first suction channel 21 and a second suction channel 22 at the position corresponding to each insert 3, both extending along the axial direction of the paper cutting wheel 2. The first suction channel 21 includes two first suction holes 211, each corresponding to one of two rows of negative pressure adsorption holes 311. The two rows of negative pressure adsorption holes 311 are connected to the corresponding first suction holes 211 through the same first air chamber 212. The second suction channel 22 includes a second suction hole 221, and the two rows of auxiliary adsorption holes 321 are connected to the second suction hole 221 through the same second air chamber 222. In practice, each row of negative pressure adsorption holes 311 can also be provided with one first suction hole 211, and each row of auxiliary adsorption holes 321 can be provided with one second suction hole 221.

[0051] The length of the auxiliary adsorption zone 32 along the rotation direction of the paper cutting wheel 2 is less than the length of the negative pressure adsorption zone 31 along the rotation direction of the paper cutting wheel 2, so that it only plays an adsorption role in a short period of time before and after cutting.

[0052] The negative pressure adsorption zone 31 and the auxiliary adsorption zone 32 are divided into three adsorption units along the axial direction of the paper cutting wheel 2. Each adsorption unit is responsible for adsorbing a slit narrow strip 51. The width of the adsorption unit along the axial direction of the paper cutting wheel 2 is slightly smaller than the width of the corresponding narrow strip 51. Specifically, the two sides of the adsorption unit are recessed by 1-2 mm from the edge of the corresponding narrow strip 51 to avoid the adsorption holes being exposed at the edge of the narrow strip 51 and causing empty suction, thus ensuring the effective utilization of the negative pressure adsorption force.

[0053] Step 3: Drive the paper cutting wheel 2 to rotate

[0054] The cutting roller 2 is driven to rotate, causing the narrow strip 51, which is adsorbed on the surface of the insert 3, to move together with the insert 3 and be conveyed to the cutting position. The cutting roller 2 is driven to rotate by the winding machine's drive system, and its rotation speed is matched with the conveying speed of the narrow strip 51.

[0055] Step 4: Negative pressure begins to be generated in the auxiliary adsorption zone 32.

[0056] Before the narrow strip 51 reaches the cutting position, the second suction channel 22 on the paper cutting roller 2, which is connected to the auxiliary adsorption zone 32, is connected to the negative pressure source through the air distribution plate 4 of the paper cutting roller 2, so that the auxiliary adsorption zone 32 begins to generate negative pressure.

[0057] Specifically, such as Figure 7 As shown, the gas distribution plate 4 is fixedly mounted on the bearing seat of the paper cutting roller 2 and remains stationary during the rotation of the paper cutting roller 2. The end face of the gas distribution plate 4 facing the paper cutting roller 2 is provided with a first gas distribution groove 41, a second gas distribution groove 42, and an auxiliary gas distribution groove 43. The first gas distribution groove 41, the second gas distribution groove 42, and the auxiliary gas distribution groove 43 are all arc-shaped grooves, concentrically positioned with the gas distribution plate 4. The first gas distribution groove 41 and the second gas distribution groove 42 provide negative pressure to the negative pressure adsorption zone 31. The auxiliary gas distribution groove 43 is connected to the first gas distribution groove 41, and the same negative pressure source provides negative pressure to the auxiliary gas distribution groove 43 through the first gas distribution groove 41, simplifying the negative pressure gas path design and eliminating the need for a separate negative pressure source for the auxiliary adsorption zone 32.

[0058] In this embodiment, as Figure 6 As shown, the first air distribution groove 41, the second air distribution groove 42, and the first intake channel 21 are all located on the first radius circle R1, while the second intake channel 22 and the auxiliary air distribution groove 43 are both located on the second radius circle R2. The second radius R2 is larger than the first radius R1, meaning the second intake channel 22 is located radially outside the first intake channel 21. In practice, the second radius R2 can also be made smaller than the first radius R1, depending on actual needs. The goal is to ensure that the second intake channel 22, after rotation, does not connect with the second air distribution groove 42.

[0059] In this embodiment, as Figure 7 As shown, the first air distribution groove 41 and the second air distribution groove 42 are arranged sequentially along the rotation direction, and the air distribution plate 4 is also arranged sequentially along the rotation direction with the third air distribution groove 44 and the fourth air distribution groove 45. The third air distribution groove 44 and the fourth air distribution groove 45 are both arc-shaped grooves, and are arranged with the same center as the air distribution plate 4. The third air distribution groove 44 and the fourth air distribution groove 45 are both located on the first radius circle R1.

[0060] As the paper-cutting wheel 2 rotates, the second suction channel 22 on the insert 3, which connects to the auxiliary adsorption zone 32, rotates with the paper-cutting wheel 2. When the second suction channel 22 enters the arc range of the auxiliary air distribution groove 43, it connects to the negative pressure source through the auxiliary air distribution groove 43, and the auxiliary adsorption zone 32 begins to generate negative pressure. At the same time, the first suction channel 21 also enters the range of the first air distribution groove 41, and the negative pressure adsorption zone 31 also begins to generate negative pressure. At this time, the narrow strip 51 is adsorbed by both zones, preparing for the upcoming cutting action.

[0061] Step 5: Cut the narrow band 51

[0062] At the cutting position, the narrow strip 51 is cut by the cutter 61. The cutter 61 is mounted on the cutter roller 6, which is positioned opposite to the paper cutting wheel 2, and the two rotate synchronously in opposite directions. When the insert 3 carrying the narrow strip 51 moves to the cutting position, the cutter 61 cuts into the cutting groove between the adjacent inserts 3, cutting the narrow strip 51 to form a single sheet of spliced ​​paper.

[0063] At the instant the cutter 61 cuts the narrow strip 51, the auxiliary adsorption area 32 maintains a negative pressure to adsorb and fix the cut end of the narrow strip 51 to the surface of the insert 3, preventing the cut end from rebounding and lifting due to the instantaneous release of cutting stress. At this time, the negative pressure adsorption area 31 also maintains a negative pressure, together ensuring the stability of the position of the narrow strip 51 at the moment of cutting.

[0064] Step Six: Pull back the narrow band 51

[0065] After cutting, the narrow strip 51 is pulled back a preset distance by the vibrating roller 8. The vibrating roller 8 is positioned in front of the paper cutting roller 2 and quickly pulls back after the cutter 61 completes the cutting. The preset distance is set according to the circumference of the cigarette to be rolled, so that the length of the cut single piece of splicing paper is precisely matched with the circumference of the cigarette, meeting the production needs of cigarettes of different specifications.

[0066] After being pulled back, the cut end of the narrow band 51 moves into the range of the negative pressure adsorption zone 31 and is adsorbed and fixed by the negative pressure adsorption zone 31. Since the cut end is constrained by the auxiliary adsorption zone 32 before being pulled back, it will not shift laterally and can be accurately pulled back to the target position.

[0067] Step 7: The auxiliary adsorption zone 32 stops generating negative pressure.

[0068] During the pull-back process, the auxiliary adsorption zone 32 continues to maintain negative pressure, and the auxiliary cutting end transitions smoothly. As the cutting end gradually moves away from the auxiliary adsorption zone 32 with the pull-back action, the second intake channel 22 is disconnected from the negative pressure source through the air distribution plate 4, so that the auxiliary adsorption zone 32 stops generating negative pressure.

[0069] Specifically, when the cut end of the narrow strip 51 is about to detach from the row of auxiliary adsorption holes 321 at the very front of the auxiliary adsorption zone 32 during the backward retraction process, the second suction channel 22 connecting the auxiliary adsorption zone 32 just moves away from the arc segment of the auxiliary air distribution groove 43 as the paper cutting wheel 2 rotates, and enters the solid side wall area of ​​the air distribution plate 4 where it is blocked. The corresponding area of ​​the auxiliary adsorption zone 32 loses negative pressure and stops generating adsorption force. This precise timing ensures that the auxiliary adsorption zone 32 continues to perform adsorption while the cut end is completely covered, and stops immediately when the cut end is about to leave, avoiding empty suction. At the same time, it prevents the auxiliary negative pressure from causing unnecessary airflow disturbance to the narrow strip 51 that has been stably adsorbed by the negative pressure adsorption zone 31.

[0070] Step 8: Continue conveying the narrow strip 51

[0071] During the pull-back and subsequent conveying process, only the negative pressure adsorption zone 31 maintains adsorption, and the auxiliary adsorption zone 32 no longer generates negative pressure. The paper cutting wheel 2 continues to rotate, and after the insert 3 leaves the arc range of the first gas distribution groove 41, it enters the range of the second gas distribution groove 42 on the gas distribution plate 4 through the first suction channel 21 connecting the negative pressure adsorption zone 31. The second gas distribution groove 42 continues to provide negative pressure for the negative pressure adsorption zone 31, stably adsorbing the pulled-back narrow strip 51 onto the surface of the insert 3 and conveying it downstream. When the insert 3 runs to the release position downstream of the second gas distribution groove 42, the negative pressure of the negative pressure adsorption zone 31 is released, and the single-piece splicing paper is successfully separated from the insert 3 and handed over to the downstream splicing mechanism to complete the cigarette splicing.

[0072] Step Nine: Waste Disposal

[0073] During the buffer period after equipment startup or before shutdown, as well as during maintenance and trial runs with material, the cut individual pieces of tipping paper have not yet merged with the cigarettes and are considered waste. During this process, the third gas distribution groove 44 on the gas distribution plate 4 generates negative pressure, adsorbing the waste pieces onto the surface of the insert 3 for continued forward transport. Specifically, along the rotation direction of the paper cutting wheel 2, the third gas distribution groove 44 is positioned before the second gas distribution groove 42 on the gas distribution plate 4, and a solenoid valve is installed between the third gas distribution groove 44 and the negative pressure air source. After equipment startup or before shutdown, the solenoid valve opens, and the third gas distribution groove 44 generates negative pressure. When the first suction channel 21 on the insert 3 rotates with the paper cutting wheel 2 to the arc segment of the third gas distribution groove 44, the negative pressure adsorption zone 31 continues to receive negative pressure, and the waste pieces are stably adsorbed and will not fall off midway.

[0074] A preset interval is provided between the third air distribution groove 44 and the second air distribution groove 42. When the first air intake hole 211 is located within the area of ​​the preset interval, it can only communicate with one of the second air distribution groove 42 or the third air distribution groove 44. Specifically, in this embodiment, with the center of the air distribution plate 4 as the center, the angle between the front end of the third air distribution groove 44 and the downstream end of the second air distribution groove 42 is 8° to ensure that the narrow band 51 will not fall off due to a brief loss of pressure during the process of switching from the second air distribution groove 42 to the third air distribution groove 44.

[0075] When the insert 3 carrying the waste piece continues to rotate to the position corresponding to the fourth air distribution groove 45, the fourth air distribution groove 45 is connected to the positive pressure air source, blowing positive pressure airflow onto the waste piece, blowing the waste piece toward the negative pressure suction device, and completing the waste recycling.

[0076] Once the production phase stabilizes, the solenoid valve closes, and the third gas distribution groove 44 no longer generates negative pressure. At this point, when the normally cut single-piece splicing paper moves with the insert 3 to the corresponding position in the third gas distribution groove 44, it naturally depressurizes due to the absence of negative pressure adsorption, smoothly separating from the insert 3 and being handed over to the downstream cigarette splicing mechanism to complete the cigarette splicing. The positive pressure airflow in the fourth gas distribution groove 45 can also be maintained as needed during the stable production phase to blow waste pieces that have not properly detached from the cutting wheel towards the negative pressure suction device.

[0077] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications and substitutions should be covered within the scope of the claims of the present invention. Technical aspects, shapes, and structures not described in detail in this invention are all well-known technologies.

Claims

1. A method for cutting paper for a viewing window filter tip, characterized in that, Includes the following steps: A single splicing tape is cut into three parallel narrow tapes; The three narrow strips after slitting are fed to the surface of the insert of the paper cutting wheel. The narrow strips are adsorbed and fixed by the negative pressure adsorption area on the insert. The insert is also provided with an auxiliary adsorption area, which is located in front of the negative pressure adsorption area along the rotation direction of the paper cutting wheel. The paper cutting wheel is driven to rotate, which moves the narrow strip to the cutting position; Before the narrow strip reaches the cutting position, the air distribution plate of the paper cutting wheel connects the air intake channel on the paper cutting wheel that connects to the auxiliary adsorption area with the negative pressure source, so that the auxiliary adsorption area begins to generate negative pressure. At the moment the narrow strip is cut by the cutter at the cutting position, the auxiliary adsorption area maintains a negative pressure to adsorb and fix the cut end of the narrow strip to the surface of the insert, preventing the cut end from rebounding and lifting. After cutting, the narrow strip is pulled back a preset distance by the vibrating roller, so that the cut end moves into the range of the negative pressure adsorption zone and is adsorbed and fixed by the negative pressure adsorption zone; During the pull-back process, the auxiliary adsorption zone continues to maintain negative pressure. When the cutting end moves away from the auxiliary adsorption zone, the air distribution plate disconnects the air intake channel from the negative pressure source, so that the auxiliary adsorption zone stops generating negative pressure. During the pull-back and subsequent transport process, the adsorption is maintained only by the negative pressure adsorption zone until the narrow strip separates from the insert.

2. The method for cutting paper for attaching a window filter tip according to claim 1, characterized in that, The gas distribution plate is provided with a first gas distribution groove, a second gas distribution groove and an auxiliary gas distribution groove. The first and second gas distribution grooves are used to provide negative pressure for the negative pressure adsorption zone. When the air intake channel of the auxiliary adsorption zone enters the range of the auxiliary gas distribution groove during the rotation of the paper cutting wheel, it is connected to the negative pressure source, and when it leaves the range of the auxiliary gas distribution groove, it is disconnected from the negative pressure source.

3. The method for cutting paper for attaching a window filter tip according to claim 2, characterized in that, The auxiliary gas distribution channel is connected to the first gas distribution channel, and the same negative pressure source provides negative pressure to the auxiliary gas distribution channel through the first gas distribution channel.

4. The method for cutting paper for attaching a window filter tip according to claim 2, characterized in that, The paper cutting wheel is evenly distributed with multiple inserts along its circumference. During continuous cutting, when the air intake channel corresponding to the previous insert is about to leave the range of the auxiliary air distribution groove, the air intake channel corresponding to the next insert simultaneously enters the auxiliary air distribution groove, so that the total cross-sectional area of ​​the airflow channels in the auxiliary air distribution groove remains stable.

5. The method for cutting paper for attaching a window filter tip according to claim 1, characterized in that, The preset distance is set according to the circumference of the cigarette to be rolled, so that the length of the cut single piece of splicing paper matches the circumference of the cigarette.

6. The method for cutting paper for attaching a window filter tip according to claim 2, characterized in that, The negative pressure adsorption zone includes several rows of negative pressure adsorption holes arranged along the axial direction of the paper cutting wheel. The auxiliary adsorption zone includes at least one row of auxiliary adsorption holes. The auxiliary adsorption holes are connected to the air intake channel. The length of the auxiliary adsorption zone along the rotation direction of the paper cutting wheel is less than the length of the negative pressure adsorption zone along the rotation direction of the paper cutting wheel.

7. The method for cutting paper for attaching a window filter tip according to claim 6, characterized in that, When the cut end of the narrow strip is about to leave the row of adsorption holes at the front end of the auxiliary adsorption zone during the process of being pulled back, the air intake channel connecting the auxiliary adsorption zone leaves the range of the auxiliary air distribution groove, so that the auxiliary adsorption zone stops generating negative pressure.

8. The method for cutting paper for attaching a window filter tip according to claim 1, characterized in that, The negative pressure adsorption zone and the auxiliary adsorption zone are divided into three adsorption units along the paper cutting wheel axis. Each adsorption unit is corresponding to adsorb a slit narrow strip, and the width of the adsorption unit along the paper cutting wheel axis is smaller than the width of the corresponding narrow strip.

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