A tipping paper cutting wheel and cutting mechanism

Abstract

The present application relates to the technical field of tipping paper cutting, and discloses a tipping paper cutting wheel and a cutting mechanism, which comprise a bearing seat, a wheel body rotatably installed on the bearing seat, an inlay block installed on the circumference of the wheel body, and a fixedly arranged air distribution disc, wherein the inlay block is provided with a negative pressure adsorption area and an auxiliary adsorption area, the wheel body is provided with a first air suction channel and a second air suction channel which are respectively connected with the negative pressure adsorption area and the auxiliary adsorption area, the air distribution disc is sequentially provided with a first air distribution groove and a second air distribution groove along the rotation direction of the wheel body, and the first air distribution groove is further provided with an auxiliary air distribution groove, the first air suction channel, the first air distribution groove and the second air distribution groove are located on a first radius circumference, and the auxiliary air distribution groove and the second air suction channel are located on a second radius circumference. The present application is used to solve the problem that the cutting end of the tipping paper band will be severely bounced up in the direction away from the cutting wheel after the tipping paper band is cut.

Description

Technical Field

[0001] This invention relates to the field of tipping paper cutting technology, and in particular to a tipping paper cutting wheel and cutting mechanism. Background Technology

[0002] Traditional paper-cutting rollers have several rows of negative pressure adsorption holes on each insert. These rows of holes form a negative pressure adsorption zone, used to adsorb the tipping paper strip onto the paper-cutting roller, which then transports the tipping paper strip to the cutter roller. After the cutter roller cuts the tipping paper strip, a vibrating roller quickly pulls the strip back to ensure that the cut length matches the circumference of the cigarette to be rolled. Simultaneously, the cut end of the tipping paper strip is pulled back into the negative pressure adsorption zone, where it is re-adsorbed and fixed, preventing it from wobbling.

[0003] For cigarettes with transparent windows, the tipping paper needs to be cut into three strips before cutting (the gaps between adjacent strips correspond to the window segments of the cigarette). After cutting, the three tipping paper strips are more prone to stress concentration and instantaneous release at the cut point than a single tipping paper strip. The cut ends of the tipping paper strips will rebound and curl significantly away from the cutting roller. During the process of the tipping paper strip being pulled back by the vibrating roller, although the negative pressure adsorption zone can re-adsorb and fix the cut ends of the tipping paper strip, it is very easy to cause tension imbalance of the tipping paper strip, resulting in shaking and skew of the cut ends, thus causing misalignment of the tipping paper on the finished cigarette. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a paper feed cutting wheel and a cutting mechanism to solve the problem in the prior art that after the three paper feed tapes are cut, the cut ends of the paper feed tapes will rebound and curl up in a direction away from the cutting wheel.

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

[0006] A paper cutting wheel includes a bearing housing, a wheel body rotatably mounted on the bearing housing, an insert mounted on the circumference of the wheel body, and a fixedly arranged air distribution plate. The insert is provided with a negative pressure adsorption area and an auxiliary adsorption area. Along the rotation direction of the wheel body, the auxiliary adsorption area is located before the negative pressure adsorption area. The wheel body is provided with a first air intake channel and a second air intake channel respectively connecting the negative pressure adsorption area and the auxiliary adsorption area. The air distribution plate is provided with a first air distribution groove and a second air distribution groove in sequence along the rotation direction of the wheel body. An auxiliary air distribution groove is also provided at the first air distribution groove. The first air intake channel, the first air distribution groove and the second air distribution groove are all located on a first radius circumference, and the auxiliary air distribution groove and the second air intake channel are all located on a second radius circumference.

[0007] The auxiliary air distribution groove is used to maintain communication with the second air intake channel when the cutter cuts the splicing paper tape;

[0008] When the insert rotates to the first air distribution groove, the first air intake channel is connected to the first air distribution groove, and the second air intake channel is connected to the auxiliary air distribution groove;

[0009] When the insert rotates to the second air distribution groove, the first air intake channel connects to the second air distribution groove, and the second air intake channel is blocked by the side wall of the air distribution plate.

[0010] By designing the above structure, when the cutter cuts the three tipping paper strips, the auxiliary adsorption zone generates negative pressure, firmly adsorbing the cut end of the tipping paper strip and overcoming the rebound caused by stress release. When the vibrating roller is pulled back after cutting, the cut end remains constrained, preventing lateral displacement and accurately pulling back the negative pressure adsorption zone to avoid misalignment of the finished cigarette tipping paper. Furthermore, the auxiliary adsorption zone only operates briefly before and after cutting, with no adsorption force at other times, thus not affecting the normal conveying and separation of the tipping paper strips.

[0011] Furthermore, the auxiliary gas distribution groove is connected to the first gas distribution groove.

[0012] By setting up the above structure, the auxiliary gas distribution groove can directly obtain negative pressure from the first gas distribution groove, without the need to set up a separate gas path channel, which makes the structure simpler and the manufacturing cost lower.

[0013] Furthermore, the length of the auxiliary adsorption zone along the rotation direction of the wheel body is less than the length of the negative pressure adsorption zone along the rotation direction of the wheel body. The negative pressure adsorption zone includes several rows of negative pressure adsorption holes, and the auxiliary adsorption zone includes at least one row of auxiliary adsorption holes.

[0014] Furthermore, the auxiliary air distribution groove, the first air distribution groove, and the second air distribution groove are all arc-shaped grooves and are arranged with the same center as the air distribution plate.

[0015] By setting the above structure, the arc-shaped groove matches the rotational motion of the wheel, ensuring that the air intake channel is stably connected throughout the entire arc length and that the air path switching is smooth.

[0016] Furthermore, the distance between two adjacent second intake channels is configured such that when the first second intake channel leaves the auxiliary air distribution slot, the second second intake channel simultaneously enters the auxiliary air distribution slot.

[0017] By setting the above structure, the total connection area between the auxiliary air distribution groove and the second air intake channel remains relatively stable during the block switching process, avoiding sudden changes in airflow speed and suction fluctuations caused by a sudden reduction in the connection cross-sectional area, and ensuring that the adsorption force of the auxiliary adsorption zone is stable and consistent during continuous cutting.

[0018] Furthermore, the radius of the second radius circle is greater than the radius of the first radius circle.

[0019] Furthermore, the air distribution plate is also provided with a third air distribution groove. Along the rotation direction of the wheel body, the third air distribution groove is located in front of the second air distribution groove, and a solenoid valve is provided between the third air distribution groove and the positive pressure air source.

[0020] By setting up the above structure, when the paper tape needs to be separated from the insert after delivery, the solenoid valve closes, cutting off the connection between the third air distribution groove and the negative pressure air source. When the paper tape moves to the position of the corresponding third air distribution groove, there is no longer a continuous negative pressure adsorption force, making the separation smoother and more reliable. When the paper tape needs to be transported to the waste recycling area, the solenoid valve opens, connecting the third air distribution groove to the negative pressure air source. The third air distribution groove generates negative pressure to adsorb the paper tape and transport it to the waste recycling area.

[0021] Furthermore, both the first and second intake channels extend along the axial direction of the wheel body.

[0022] By setting the above structure, the axially extended channel is easy to machine on the circumferential surface of the wheel body, and it is compatible with the axial arrangement direction of the inserts, resulting in good manufacturability and low processing cost.

[0023] A cutting mechanism, comprising:

[0024] As described in any of the above-mentioned paper feeder / cutting rollers;

[0025] A cutting roller is arranged opposite to the paper-cutting wheel for splicing paper. The cutting roller is equipped with a cutting blade for cutting the splicing paper strip on the paper-cutting wheel at the cutting position.

[0026] The slitting assembly is located upstream of the splicing paper cutting wheel and is used to slit one splicing paper strip into three splicing paper strips.

[0027] Furthermore, it also includes an oscillating roller for pulling the splicing paper tape back after cutting.

[0028] The beneficial effects of this invention are:

[0029] By setting an auxiliary adsorption zone on the insert before the negative pressure adsorption zone, and utilizing the directional air supply from the auxiliary air distribution groove on the air distribution plate, the auxiliary adsorption zone generates negative pressure when the cutter cuts the splicing paper tape, firmly adhering the cut end to the insert surface. This overcomes the severe rebound and lifting caused by the instantaneous release of material stress. Furthermore, because the cut end is constrained and fixed by the auxiliary adsorption zone at the moment of cutting, it will not shift laterally during the process of the vibrating roller pulling it back. It can be precisely pulled back to the negative pressure adsorption zone and adsorbed there, avoiding the misalignment defect of the finished cigarette splicing paper caused by the skewed cut end, and significantly improving the product qualification rate. Attached Figure Description

[0030] Figure 1This is a structural schematic diagram of the paper cutting roller in use in Embodiment 1;

[0031] Figure 2 This is a schematic diagram of the planar structure of the paper cutting roller in use in Embodiment 1;

[0032] Figure 3 This is a schematic diagram of the insert in the paper cutting roller of Embodiment 1;

[0033] Figure 4 This is a schematic diagram of the disassembled structure of the paper-cutting roller in Embodiment 1;

[0034] Figure 5 This is a schematic diagram of the structure of the paper cutting roller in Embodiment 1;

[0035] Figure 6 This is a schematic diagram of the air distribution plate in the paper cutting roller of Embodiment 1;

[0036] Figure 7 This is a schematic cross-sectional view of the paper cutting roller in Embodiment 1;

[0037] Figure 8 This is a schematic diagram of the working structure of the air distribution plate in the paper cutting roller of Embodiment 1 under the usage state;

[0038] Figure 9 This is a schematic diagram of the cutting mechanism in Embodiment 2;

[0039] in,

[0040] 2. Wheel body; 21. First intake channel; 211. First intake port; 212. First air chamber; 22. Second intake channel; 221. Second intake port; 222. Second air chamber;

[0041] 3. Insert; 31. Negative pressure adsorption zone; 311. Negative pressure adsorption hole; 32. Auxiliary adsorption zone; 321. Auxiliary adsorption hole;

[0042] 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;

[0043] 5. Splice the paper tape;

[0044] 6. Cutting roller; 61. Cutting knife;

[0045] 8. Vibrating roller. Detailed Implementation

[0046] 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.

[0047] Example 1: As Figures 1-8 As shown, this embodiment provides a paper cutting wheel, including a bearing housing, a wheel body 2, multiple inserts 3, and an air distribution plate 4.

[0048] The bearing housing is fixedly mounted on the frame of the winding and splicing machine, and is used to install the entire paper cutting wheel inside the winding and splicing machine. The wheel body 2 is rotatably mounted on the bearing housing via bearings and is driven to rotate by the drive system of the winding and splicing machine.

[0049] Multiple inserts 3 are evenly distributed along the circumference of the wheel body 2. In this embodiment, twelve inserts 3 are provided. Each insert 3 is detachably fixed to the outer circumferential surface of the wheel body 2 by screws, facilitating replacement after wear. 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 wheel body 2 (in this embodiment, the wheel body 2 rotates clockwise; see specific references...), ... Figure 2 (As indicated by the middle arrow), the auxiliary adsorption zone 32 is located before the negative pressure adsorption zone 31, meaning the auxiliary adsorption zone 32 reaches the cutting position before the negative pressure adsorption zone 31 (see reference). Figure 2 (The location indicated by A in the middle).

[0050] The negative pressure adsorption zone 31 includes several rows of negative pressure adsorption holes 311 arranged along the axial direction of the wheel body 2, which are used to stably adsorb the splicing paper tape 5 onto the surface of the insert 3 during the conveying process. The auxiliary adsorption zone 32 includes at least one row of auxiliary adsorption holes 321, whose length along the rotation direction of the wheel body 2 is significantly shorter than the length of the negative pressure adsorption zone 31, and it only plays an adsorption role in a short period of time before and after cutting.

[0051] In this embodiment, the negative pressure adsorption holes 311 are arranged in four rows, and the auxiliary adsorption holes 321 are arranged in two rows. In some other embodiments, the number of rows of negative pressure adsorption holes 311 and auxiliary adsorption holes 321 can be adjusted according to the length of the tipping paper and the spacing between the rows.

[0052] For the production of cigarettes with transparent windows, the tipping paper tape 5 has been cut into three parallel tipping paper tapes 5 before cutting, such as... Figure 1As shown. Accordingly, the negative pressure adsorption area 31 and auxiliary adsorption area 32 on each insert 3 are arranged according to the spacing of three splicing paper strips 5, that is, divided into three adsorption units along the axial direction of the wheel body 2. Each adsorption unit corresponds to one slit splicing paper strip 5, ensuring that each strip can be independently adsorbed and fixed. It should be noted that the width of the adsorption unit (the width along the axial direction of the wheel body 2) needs to be slightly smaller than the width of the corresponding splicing paper strip 5 to avoid the negative pressure adsorption hole 311 and auxiliary adsorption hole 321 from being unable to adsorb. Specifically, along the axial direction of the wheel body 2, both sides of the adsorption unit are 1-2 mm wider than the corresponding splicing paper strip 5.

[0053] Inside the wheel body 2, a first air intake channel 21 and a second air intake channel 22 are respectively provided at the position corresponding to each insert 3, both of which extend along the axial direction of the wheel body 2. The first air intake channel 21 is connected to the negative pressure adsorption zone 31 through the air passage inside the insert 3, while the second air intake channel 22 is connected to the auxiliary adsorption zone 32.

[0054] In this embodiment, 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.

[0055] In this embodiment, as Figure 4 As shown, all first intake channels 21 are located on the first radius circumference R1, and all second intake channels 22 are located on the second radius circumference R2, with the second radius R2 being 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 be made smaller than the first radius R1 according to actual needs. The goal is to ensure that the second intake port 221 of the auxiliary adsorption zone 32 does not connect with the second gas distribution groove 42 after rotation.

[0056] The air distribution plate 4 is fixedly mounted on the bearing seat and remains stationary during the rotation of the wheel body 2. Along the rotation direction of the wheel body 2, the end face of the air distribution plate 4 facing the wheel body 2 is sequentially provided with a first air distribution groove 41 and a second air distribution groove 42. Both the first air distribution groove 41 and the second air distribution groove 42 are arc-shaped grooves, both concentric with the air distribution plate 4, and both located on the first radius circumference R1, corresponding to the position of the first suction channel 21. The first air distribution groove 41 and the second air distribution groove 42 are connected to the same negative pressure air source of the winding and sealing machine through an internal air passage.

[0057] Within the arc-shaped region where the first air distribution groove 41 is located, an auxiliary air distribution groove 43 is also provided on the air distribution plate 4. The auxiliary air distribution groove 43 is located on the second radius circumference R2, corresponding to the position of the second intake channel 22. In this embodiment, the auxiliary air distribution groove 43 is connected to the first air distribution groove 41 and obtains negative pressure from the first air distribution groove 41. In some other embodiments, the auxiliary air distribution groove 43 may be set separately and equipped with an independent air path connected to the negative pressure source.

[0058] In this embodiment, the arc length of the auxiliary air distribution groove 43 along the rotation direction of the wheel body 2 is configured to at least cover the instantaneous position of the cutter 61 cutting the splicing paper tape 5, ensuring that the second air intake channel 22 and the auxiliary air distribution groove 43 remain connected when the cutting action occurs.

[0059] In this embodiment, the spacing between two adjacent second intake channels 22 is precisely configured. Specifically, when the second intake channel 22 located in front along the rotation direction is about to completely leave the end of the arc segment of the auxiliary air distribution groove 43, the second intake channel 22 located behind just begins to enter the beginning of the arc segment of the auxiliary air distribution groove 43. In this way, during the continuous switching of the insert 3 through the cutting area, the total cross-sectional area of ​​the auxiliary air distribution groove 43 and the second intake channel 22 remains within a relatively stable range, avoiding a sudden decrease in the cross-sectional area caused by one channel gradually withdrawing while the other has not yet fully entered, thereby preventing fluctuations in the auxiliary adsorption force caused by sudden changes in airflow velocity.

[0060] In this embodiment, the end position of the arc segment of the auxiliary air distribution groove 43 along the rotation direction of the wheel is configured such that, during the process of the vibrating roller 6 pulling the receiving paper tape 5 back, when the cut end of the receiving paper tape 5 is about to leave the first row of auxiliary suction holes 321, the corresponding second suction channel 22 has already left the arc segment range of the auxiliary air distribution groove 43 and entered the solid side wall area of ​​the air distribution plate 4 and is blocked. This ensures that the auxiliary suction holes 321 stop suctioning when covered by the receiving paper tape 5, avoiding empty suction after the receiving paper tape 5 leaves.

[0061] Along the rotation direction of wheel 2, a third air distribution groove 44 is provided on the air distribution plate 4 before the second air distribution groove 42. A solenoid valve is installed between the third air distribution groove 44 and the negative pressure air source. The negative pressure air source is the same as the negative pressure air source connected to the first air distribution groove 41 and the second air distribution groove 42. The solenoid valve is used to control the connection and disconnection between the third air distribution groove 44 and the negative pressure air source. During the buffer period after equipment startup or before shutdown, as well as during maintenance and trial operation, the sheet-like tipping paper 5 will not merge with the cigarette. During this process, the solenoid valve opens, and the third air distribution groove 44 generates negative pressure to absorb the sheet-like tipping paper 5, conveying it to the waste recycling point (such as a negative pressure suction device). Once the production time stabilizes, the solenoid valve closes, and the third gas distribution groove 44 will not generate negative pressure. When the sheet-like tipping paper tape 5 moves to the position corresponding to the third gas distribution groove 44, there will no longer be a continuous negative pressure adsorption force (indirect pressure relief), so that the tipping paper tape 5 can detach from the insert 3 and merge with the cigarette and be rolled together.

[0062] It should be noted that in this embodiment, a preset interval is provided between the third air distribution groove 44 and the second air distribution groove 42 to ensure that the tipping paper 5 does not fall off during the process of switching from the corresponding second air distribution groove 42 to the corresponding third air distribution groove 44. When the first suction 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, with the center of the air distribution plate 4 as the center, the angle between the upstream end of the third air distribution groove 44 and the downstream end of the second air distribution groove 42 is 8°.

[0063] In this embodiment, a fourth air distribution groove 45 is provided on the air distribution plate 4 before the third air distribution groove 44. The fourth air distribution groove 45 is connected to the positive pressure air source. The position of the fourth air distribution groove 45 corresponds to the negative pressure suction device. When the waste sheet-shaped splicing paper tape 5 moves to the position corresponding to the fourth air distribution groove 45, the waste sheet-shaped splicing paper tape 5 is blown towards the negative pressure suction device.

[0064] The third air distribution groove 44 is connected to the atmosphere or a positive pressure air source. When the first air intake channel 21 rotates with the wheel body 2 to the third air distribution groove 44, the negative pressure of the negative pressure adsorption zone 31 is released so that the paper tape 5 can be smoothly separated from the insert 3 and handed over to the downstream mechanism.

[0065] It should be noted that the first air distribution groove 41, the second air distribution groove 42 and the third air distribution groove 43 have the same radial width. The vertical distance from the outer wall of the first air distribution groove 41 to the second radius circumference R is greater than the radius of the second air intake hole 221, so as to ensure that the second air intake channel 22 will not connect with the second air distribution groove 42 and the third air distribution groove 43 during the rotation of the wheel body 2.

[0066] In some other embodiments, when cutting the tipping paper 5 with a larger cigarette diameter, i.e., when the vibrating roller 8 pulls the tipping paper strip 5 back a preset distance, the cut end of the tipping paper strip 5 still covers the two rows of auxiliary adsorption holes 321. Therefore, it is unnecessary to set auxiliary air distribution grooves 43 on the air distribution plate 4. The radial widths of the first air distribution groove 41, the second air distribution groove 42, and the third air distribution groove 43 can be directly increased, so that when the second air intake channel 22 rotates to the first air distribution groove 41, it directly connects with the first air distribution groove 41. Thus, when cutting tipping paper strips 5 with two different cigarette diameters, only the corresponding air distribution plate 4 needs to be replaced, without replacing the cutting roller.

[0067] Working principle:

[0068] Wheel 2 drives each insert 3 to rotate continuously in the direction of arrow A. When a certain insert 3 rotates close to the first air distribution groove 41, the first air intake channel 21 corresponding to that insert 3 begins to connect with the first air distribution groove 41, and the negative pressure adsorption zone 31 generates negative pressure. At the same time, the second air intake channel 22 enters the arc range of the auxiliary air distribution groove 43, and the auxiliary adsorption zone 32 begins to generate negative pressure, adsorbing the upstream delivery paper tape 5 onto the surface of the insert 3.

[0069] When the insert 3 carrying the receiving paper tape 5 moves to the cutting position of the cutter roller 6, the cutter 61 cuts the receiving paper tape 5 at the front end of the insert 3 along the rotation direction of the wheel body 2. At this time, the first suction channel 21 is still connected to the first air distribution groove 41, and the negative pressure adsorption zone 31 remains in an adsorption state; at the same time, the second suction channel 22 is within the arc coverage range of the auxiliary air distribution groove 43, and the auxiliary adsorption zone 32 generates negative pressure, which still firmly adsorbs the cut end of the receiving paper tape 5 that has just been cut into the area of ​​the auxiliary adsorption zone 32, thus overcoming the problem of violent rebound and lifting of the cut end caused by the instantaneous release of cutting stress from the root.

[0070] After cutting, the vibrating roller 8 pulls the attaching paper strip 5 back a certain distance to ensure that the length of the cut attaching paper strip 5 matches the circumference of the cigarette to be rolled. During the pull-back process, due to the negative pressure constraint of the auxiliary adsorption zone 32, the cut end will not shift laterally, and the cut end is precisely pulled back to the range of the negative pressure adsorption zone 31. And when the cut end of the attaching paper strip 5 is about to leave the first row of auxiliary adsorption holes 321, the corresponding second suction channel 22 has already left the arc range of the auxiliary air distribution groove 43 and entered the solid side wall area of ​​the air distribution plate 4 and is blocked. The auxiliary adsorption zone 32 loses negative pressure and no longer generates suction, avoiding empty suction and not interfering with the normal conveying of the attaching paper strip 5.

[0071] As wheel 2 continues to rotate, insert 3 rotates away from the first air distribution groove 41 and enters the corresponding arc segment of the second air distribution groove 42. At this time, the first suction channel 21 is connected to the second air distribution groove 42, and the negative pressure adsorption zone 31 continues to maintain negative pressure, stably adsorbing and conveying the pulled-back receiving paper tape 5. Since the second suction channel 22 has rotated away from the range of the auxiliary air distribution groove 43 and entered the solid side wall area of ​​the air distribution plate 4, the second suction channel 22 remains blocked.

[0072] When the insert 3 continues to run to the third gas distribution groove 44, the first air intake channel 21 connects with the third gas distribution groove 44, the continuous negative pressure of the negative pressure adsorption zone 31 disappears, and the splicing paper tape 5 is successfully separated from the surface of the insert 3 and handed over to the downstream splicing mechanism to complete the cigarette splicing.

[0073] Throughout the continuous production process, the preceding insert 3 and the following insert 3 seamlessly switch as they pass through the auxiliary air distribution groove 43. Because the spacing between two adjacent second suction channels 22 is precisely designed, as the preceding second suction channel 22 gradually exits the auxiliary air distribution groove 43, the following second suction channel 22 simultaneously enters. The total cross-sectional area of ​​the airflow channels within the auxiliary air distribution groove 43 remains relatively stable, resulting in a smooth and unfluctuating auxiliary adsorption force. This ensures the reliability of the equipment and the consistency of the products under high-speed continuous operation.

[0074] Example 2: Figure 9 As shown, this embodiment provides a cutting mechanism, including the paper-feeding cutting wheel described in Embodiment 1 above, as well as a knife roller 6 and a slitting assembly that work in cooperation with the cutting wheel.

[0075] The slitting assembly is positioned before the feed paper cutting roller. It cuts the feed paper strip 5 into three parallel feed paper strips 5 along its length before the strip enters the cutting roller. The gap between two adjacent feed paper strips 5 corresponds to the transparent window section of the cigarette. The slitting assembly can be implemented using a disc cutter or laser slitting method.

[0076] The cutter roller 6 is positioned opposite the feed paper cutting wheel, forming a gap between them for the feed paper tape 5 to pass through. A cutter 61 is mounted on the cutter roller 6, with its cutting edge extending axially along the roller. The cutter roller 6 is driven by the winding and splicing machine's transmission system and rotates synchronously in the opposite direction to the feed paper cutting wheel. When the insert 3 on the feed paper cutting wheel carries the feed paper tape 5 to the cutting position, the cutter 61 on the cutter roller 6 precisely cuts into the cutting groove between adjacent inserts 3, severing the feed paper tape 5.

[0077] In this embodiment, the cutting mechanism also includes an oscillating roller 8. The oscillating roller 8 is positioned before the tipping paper cutting wheel and is used to quickly pull the tipping paper strip 5 back a preset distance after the cutter 61 completes the cutting. The pull-back distance is precisely set according to the circumference of the cigarette to be rolled, ensuring that the length of each section of tipping paper cut off matches the circumference of the cigarette. After being pulled back, the cut end of the tipping paper strip 5 falls back into the negative pressure adsorption area 31 of the cutting wheel insert 3 and is adsorbed and fixed by the negative pressure adsorption area 31.

[0078] It should be noted that after the vibrating roller 8 pulls the feed paper tape 5 back a preset distance, it will perform a compensation action to ensure that the feed paper tape 5 is synchronized with the speed of the paper cutting wheel, and the cutter 61 completes precise cutting on the paper cutting wheel.

[0079] When the cutting mechanism is working, a single tipping paper strip 5 first passes through the slitting assembly and is cut into three parallel tipping paper strips 5. Then, the three tipping paper strips enter the cutting wheel, where the negative pressure adsorption zone 31 adsorbs the tipping paper strips 5 onto the surface of the insert 3 and conveys them forward. When the tipping paper strips 5 reach the cutting position, the cutter 61 cuts them off. At the moment of cutting, the negative pressure generated by the auxiliary adsorption zone 32 adsorbs and fixes the cut end, preventing it from rebounding. Then, the vibrating roller 8 pulls the tipping paper strips 5 back, and the cut end falls precisely into the negative pressure adsorption zone 31. The cutting wheel continues to rotate, conveying the cut tipping paper strips downstream for splicing with the cigarette.

[0080] 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 paper cutting roller, comprising a bearing housing, a wheel body rotatably mounted on the bearing housing, an insert mounted on the circumference of the wheel body, and a fixedly disposed air distribution plate, characterized in that, The insert is provided with a negative pressure adsorption area and an auxiliary adsorption area. Along the rotation direction of the wheel, the auxiliary adsorption area is located before the negative pressure adsorption area. The wheel body is provided with a first air intake channel and a second air intake channel that respectively connect the negative pressure adsorption area and the auxiliary adsorption area. The air distribution plate is provided with a first air distribution groove and a second air distribution groove in sequence along the rotation direction of the wheel. An auxiliary air distribution groove is also provided at the first air distribution groove. The first air intake channel, the first air distribution groove and the second air distribution groove are all located on a first radius circle. The auxiliary air distribution groove and the second air intake channel are all located on a second radius circle. The auxiliary air distribution groove is used to maintain communication with the second air intake channel when the cutter cuts the splicing paper tape; When the insert rotates to the first air distribution groove, the first air intake channel is connected to the first air distribution groove, and the second air intake channel is connected to the auxiliary air distribution groove; When the insert rotates to the second air distribution groove, the first air intake channel connects to the second air distribution groove, and the second air intake channel is blocked by the side wall of the air distribution plate.

2. The paper cutting roller according to claim 1, characterized in that, The auxiliary gas distribution channel is connected to the first gas distribution channel.

3. A paper cutting roller according to claim 1, characterized in that, The length of the auxiliary adsorption zone along the rotation direction of the wheel is less than the length of the negative pressure adsorption zone along the rotation direction of the wheel. The negative pressure adsorption zone includes several rows of negative pressure adsorption holes, and the auxiliary adsorption zone includes at least one row of auxiliary adsorption holes.

4. A paper cutting roller according to claim 1, characterized in that, The auxiliary air distribution groove, the first air distribution groove, and the second air distribution groove are all arc-shaped grooves and are arranged with the same center as the air distribution plate.

5. A paper cutting roller according to claim 1, characterized in that, The distance between two adjacent second intake channels is configured such that when the first second intake channel leaves the auxiliary air distribution slot, the second second intake channel simultaneously enters the auxiliary air distribution slot.

6. A paper cutting roller according to claim 1, characterized in that, The radius of the second radius circle is greater than the radius of the first radius circle.

7. A paper cutting roller according to claim 1, characterized in that, The air distribution plate is also provided with a third air distribution groove. Along the rotation direction of the wheel body, the third air distribution groove is located in front of the second air distribution groove, and a solenoid valve is provided between the third air distribution groove and the negative pressure air source.

8. A paper cutting roller according to claim 1, characterized in that, Both the first and second intake channels extend along the axial direction of the wheel body.

9. A cutting mechanism, characterized in that, include: The paper feeder and cutter roller as described in any one of claims 1 to 8; A cutting roller is arranged opposite to the paper-cutting wheel for splicing paper. The cutting roller is equipped with a cutting blade for cutting the splicing paper strip on the paper-cutting wheel at the cutting position. The slitting assembly is located upstream of the splicing paper cutting wheel and is used to slit one splicing paper strip into three splicing paper strips.

10. A cutting mechanism according to claim 9, characterized in that, It also includes an oscillating roller for pulling the cut end of the splicing paper tape back to the negative pressure adsorption zone after cutting.

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