A perforation device for cigarette tipping paper

Abstract

This utility model relates to the field of paper perforation technology, and more particularly to a perforation device for cigarette tipping paper. It includes a receiving roller, a working roller, a moving drive for moving the receiving roller and / or the working roller, and a first rotating drive for rotating the working roller; a working channel for cigarette tipping paper to pass through is formed between the receiving roller and the working roller; a plurality of perforation modules are provided on the surface of the working roller in the circumferential direction; the receiving roller includes a support portion that abuts against the perforation modules, and the support portion or the perforation modules are provided with negative pressure adsorption holes; it also includes a negative pressure airflow component that provides negative pressure adsorption force to the negative pressure adsorption holes. This application, by providing negative pressure adsorption holes on the receiving support portion or the perforation modules, can promptly remove waste generated during perforation, avoiding the impact of waste adhesion on the perforation work, and improving the smoothness and continuity of the perforation work.

Description

Technical Field

[0001] This utility model relates to the field of paper punching technology, and in particular to a punching device for cigarette tipping paper. Background Technology

[0002] Processing micropores in cigarette tipping paper can regulate the amount of air introduced during cigarette inhalation, achieving smoke dilution, tar reduction, and flavor optimization. Traditional cigarette tipping paper perforation mainly uses laser or mechanical stamping processes, which have drawbacks such as high energy consumption, low processing efficiency, and limited hole shapes (mostly circular or linear arrangements). Laser perforation can easily cause paper charring, affecting air permeability and aesthetics; mechanical stamping molds are complex to change and difficult to adapt to the needs of various specifications and irregular hole shapes.

[0003] Our company has previously researched a molding-type edge trimming device, such as the paper irregular edge trimming device disclosed in patent document CN119260821A. It includes an abutment roller, a trimming roller, a rotation drive, and a movement drive. A deformable first flexible sleeve is fitted onto the surface of the abutment roller. An edge trimming ring is fitted onto the surface of the trimming roller, and the trimming ring includes several trimming units arranged sequentially along the circumferential direction of the trimming roller. Each trimming unit includes several cutting side edges. An edge trimming channel for paper passage is formed between the abutment roller and the trimming roller. The movement drive drives the abutment roller and / or the trimming roller to move, causing the trimming ring to press against the first flexible sleeve and deform the first flexible sleeve. The rotation drive drives the trimming roller and the trimming ring to rotate, causing the several cutting side edges to sequentially cut the paper.

[0004] By replacing the trimming ring in this trimming device with a punching module, the device can also be used to punch thin, soft, and easily deformable paper, such as cigarette tipping paper. During trimming, the cut edges are continuous and can be carried away and cleaned by the transport rollers; however, during punching, the waste material cut off by the punching module is discontinuous and cannot be removed by existing devices. This waste material easily adheres to the working parts and affects subsequent punching operations. Utility Model Content

[0005] This invention aims to solve the above-mentioned problems by providing a punching device for cigarette tipping paper with waste removal function.

[0006] The technical solution of this utility model is to provide a perforation device for cigarette tipping paper, including a contact roller, a working roller, a moving drive for moving the contact roller and / or the working roller, and a first rotating drive for rotating the working roller; a working channel for cigarette tipping paper to pass through is formed between the contact roller and the working roller; a plurality of perforation modules are provided on the surface of the working roller in the circumferential direction; the contact roller includes a support portion that abuts against the perforation modules; the support portion or the perforation modules are provided with negative pressure adsorption holes; and a negative pressure airflow component is also provided to provide negative pressure adsorption force for the negative pressure adsorption holes.

[0007] As a preferred embodiment of this invention, it further includes a second rotation drive for driving the abutment roller to rotate, wherein the surface of the abutment roller is provided with a perforation groove along the circumferential direction that can engage with the perforation module; and the negative pressure adsorption hole is disposed in the perforation groove.

[0008] As a preferred embodiment of this utility model, the abutting roller includes a central roller and a sleeve rotatably fitted onto the central roller, the second rotating member drives the sleeve to rotate around the central roller; the perforated groove and the negative pressure adsorption hole are provided on the sleeve; the central roller is hollow inside to form a flow guiding channel, the flow guiding channel is connected to the negative pressure airflow member, and the central roller is provided with a connecting port for connecting the negative pressure adsorption hole and the flow guiding channel.

[0009] As a preferred embodiment of this invention, the diameter of the negative pressure adsorption hole increases in the direction from the perforated groove to the flow guide channel.

[0010] As a preferred embodiment of this utility model, it further includes a secondary cleaning structure, which includes a waste removal nozzle and a waste removal airflow component that provides positive pressure airflow or negative pressure adsorption force to the waste removal nozzle. The outlet of the waste removal nozzle faces the working channel. The waste removal nozzle is located downstream of the working roller in the rotation direction relative to the abutment roller.

[0011] As a preferred embodiment of this invention, the secondary cleaning structure further includes an adjusting component for adjusting the angle of the waste removal nozzle toward the working channel.

[0012] As a preferred embodiment of this invention, the punching module is detachably connected to the working roller.

[0013] In a preferred embodiment of this invention, the working roller is positioned above the abutting roller, and the moving drive unit drives the working roller to move relative to the abutting roller.

[0014] As a preferred embodiment of this utility model, the moving drive component includes a cylinder, a lever arm, a limiting shaft, and a connecting arm; the limiting shaft is rotatably fitted with a sleeve shaft; one end of the lever arm is hinged to the piston rod of the cylinder, and the other end is connected to the sleeve shaft; one end of the connecting arm is connected to the sleeve shaft, and the other end is connected to the working roller.

[0015] As a preferred embodiment of this invention, it further includes a set of transport rollers for transporting cigarette tipping paper through the working channel.

[0016] The beneficial effects of this utility model are:

[0017] 1. In this application, the working roller drives the punching module to rotate and punch holes in the cigarette tipping paper on the abutment roller by molding. By setting a support part on the abutment roller to support the punching work or by setting a negative pressure adsorption hole on the punching module, the waste generated by punching can be removed in time, avoiding the impact of waste adhesion on the punching work and improving the smoothness and continuity of the punching work.

[0018] In some implementations, a secondary cleaning structure is added to further remove waste and impurities near the device.

[0019] 2. In this application, holes of various shapes can be obtained depending on the shape of the punching module, which is highly practical. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of one embodiment of a cigarette tipping paper punching device;

[0021] Figure 2 This is a schematic diagram of another embodiment of a cigarette tipping paper punching device;

[0022] Figure 3 This is a schematic diagram of the structure after the adjustment of the moving drive component in another embodiment of a cigarette tipping paper punching device.

[0023] In the figure: 1. Abutting roller, 11. Negative pressure adsorption hole, 12. Perforated groove, 13. Center roller, 14. Sleeve, 2. Working roller, 21. Perforation module, 3. Waste removal nozzle, 41. Cylinder, 42. Lever arm, 43. Limiting shaft, 44. Detailed Implementation

[0024] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] A perforation device for cigarette tipping paper, such as Figure 1As shown, the device includes a receiving roller 1 and a working roller 2, forming a working channel for the cigarette tipping paper to pass through. The working roller 2 has a perforation module 21 on its surface, and the receiving roller 1 has a deformable flexible sleeve or a perforation groove 12 into which the perforation module 21 can be inserted. In simple terms: when the cigarette tipping paper is in the working channel, the perforation module 21 applies pressure to the cigarette tipping paper until it passes through, causing the flexible sleeve to deform or insert into the perforation groove 12. The pressured portion of the cigarette tipping paper is cut off by the perforation module 21, thus completing the perforation.

[0026] The portion of the abutment roller 1 that is concave or has a perforation groove 12 is called the support portion. Waste material cut from the cigarette tipping paper may adhere to the surface of the perforation module 21 or the support portion of the abutment roller 1, affecting subsequent perforation operations. Therefore, in this application, a negative pressure suction hole 11 is provided on the perforation module 21 or the support portion, and the negative pressure suction hole 11 is connected to a negative pressure airflow component. After perforation is completed, but before the perforation module 21 has left the support portion, the negative pressure airflow component is activated to suck away the waste material between the perforation module 21 and the support portion, completing the waste removal operation.

[0027] In some embodiments, the negative pressure adsorption hole 11 is provided in the support portion. However, in embodiments where the abutment roller 1 uses a flexible sleeve, the diameter of the negative pressure adsorption hole 11 in the support portion cannot be set too large, posing a risk of clogging. Therefore, in some preferred embodiments, the abutment roller 1 uses a perforated groove 12 as the support portion. In some embodiments, the perforation module has a protrusion height of 0.25 mm and a width of 0.5 mm; the perforation groove has a recess depth of 0.2 mm.

[0028] To ensure continuous perforation and effectiveness in perforating thin, easily deformable cigarette tipping paper, this application employs a rotary cutting approach. The working roller 2 has several perforation modules 21 arranged circumferentially on its surface. It also includes a first rotation drive to control the rotation of the working roller 2, causing a single perforation module 21 to gradually press against the cigarette tipping paper, and a sequence of perforation modules 21 to press against the cigarette tipping paper. Since the working roller 2 rotates, in the embodiment where the abutment roller 1 uses perforation grooves 12, the perforation grooves 12, relative to a flexible sleeve or rigid structure, easily prevent the perforation modules 21 from dislodging and continue rotating. Therefore, in this embodiment, a second rotation drive is also included to drive the rotation of the abutment roller 1, and several perforation grooves 12 are arranged circumferentially on the surface of the abutment roller 1. The rotation direction of the abutment roller 1 is opposite to the rotation direction of the working roller 2, for example... Figure 1In the process, the abutment roller 1 rotates counterclockwise, and the working roller 2 rotates clockwise. At the working channel, the punching module 21 is inserted into the punching groove 12; then both continue to rotate, allowing the punching module 21 and the punching groove 12 to separate smoothly. Furthermore, it is necessary to control the linear speed of the working roller 2 and the abutment roller 1 to ensure the engagement and disengagement of the punching module 21 and the punching groove 12. Those skilled in the art can adjust this based on the outer diameters of the working roller 2 and the abutment roller 1.

[0029] At this point, in order to complete the rotation of the abutment roller 1 and the setting of the negative pressure adsorption hole 11, the abutment roller 1 can adopt the negative pressure drum structure commonly used in the tobacco industry in the prior art, which has the functions of rotation and negative pressure adsorption. Simply put: Figure 1 As shown, the abutment roller 1 includes a central roller 13 and a sleeve 14 rotatably fitted onto the central roller 13 via a rotating bearing. Both ends of the central roller 13 can be fixed by fixed support plates located near the device. A second rotating component drives the sleeve 14 to rotate around the central roller 13. Specifically, connecting shafts, also rotatably connected to the central roller 13, can be fixedly connected to both ends of the sleeve 14. Gears are fitted on the connecting shafts and are driven by a gear chain on the motor output shaft. The motor output shaft drives the connecting shaft and the sleeve 14 to rotate around the central roller 13 via the gear chain structure. The fixed central roller 13 is hollow inside to form a flow channel, and an opening is provided at the end of the central roller 13 to communicate with the negative pressure airflow component. The portion of the central roller 13 located inside the sleeve 14 has a connecting hole, particularly on the portion of the central roller 13 facing the working channel. A perforated groove 12 is provided on the sleeve 14. One end of the negative pressure adsorption hole 11 is located at the bottom of the perforated groove 12, and the other end is located on the inner side of the sleeve 14 near the central roller 13. Therefore, it can communicate with the connecting hole during rotation to achieve negative pressure adsorption. In addition, the sealing components and other structures required for this structure can be designed by referring to the drum or by those skilled in the art.

[0030] The diameter of the negative pressure adsorption hole 11 located at the bottom end of the perforated groove 12 can be the same as the bottom area of ​​the perforated groove 12, so as to achieve full adsorption of waste. In some preferred embodiments, the diameter of the negative pressure adsorption hole 11 increases gradually from the perforated groove 12 to the flow channel, reducing the risk of clogging.

[0031] In some embodiments, the negative pressure adsorption hole 11 is provided in the perforation module 21. In order to complete the rotation of the working roller 2 and the setting of the negative pressure adsorption hole 11, the structure of the abutment roller 1 described above can be referred to.

[0032] In some embodiments, a lubricating layer, such as a Teflon layer, is provided on the surface of the support and / or the punching module 21 to reduce waste adhesion and facilitate removal.

[0033] In some implementations, such as Figure 1As shown, this application also includes a secondary cleaning structure, which includes a waste removal nozzle 3 and a waste removal airflow component that provides positive pressure airflow or negative pressure adsorption force to the waste removal nozzle 3. The outlet of the waste removal nozzle 3 faces the working channel. The waste removal nozzle 3 is located downstream of the working roller 2 in the rotation direction relative to the abutment roller 1. The waste removal nozzle 3 can blow away or adsorb waste material that is partially attached to the cigarette tipping paper and not completely cut off after the punching work is completed, or waste material that is adhered to the punching module 21 and not successfully sucked away by the negative pressure adsorption hole 11. It can also remove impurities near the working channel, thus achieving the effect of secondary waste removal and reducing impurities in the punching environment.

[0034] In some embodiments, the secondary cleaning structure also includes an adjusting member for adjusting the angle of the waste air nozzle 3 toward the working channel. The structure of the adjusting member is not limited; in some embodiments, such as... Figure 1 As shown, the exhaust nozzle 3 and the exhaust airflow pipe can be connected via a flexible bamboo-joint pipe. A connecting plate is added to the exhaust nozzle 3. The connecting plate and the fixed support plate near the drilling device each have connecting holes. The two connecting holes are connected by bolts and nuts. After adjusting the angle, the connecting plate is pressed against the fixed support plate using bolts and nuts, and the angle is maintained by friction. In some embodiments, if the exhaust nozzle 3 is too heavy to be fixed by friction, the connecting plate can be a disc with multiple connecting holes arranged in a ring. The fixed support plate has two pin holes. After the connecting plate and exhaust nozzle 3 are rotated to adjust the angle, the pin holes are connected to the corresponding connecting holes on the connecting plate using bolts and nuts.

[0035] To accommodate cigarette tipping papers of varying thicknesses and to provide different levels of molding pressure, the distance between the abutment roller 1 and the work roller 2 can be adjusted using a moving drive mechanism. In some embodiments, the abutment roller 1 is fixed in position, and the work roller 2 is positioned above the abutment roller 1. The moving drive mechanism drives the work roller 2 to move closer to or away from the abutment roller 1. In this embodiment, the work roller 2 needs to rotate and move. The work roller 2 and the first rotation drive mechanism can be an electric roller. Electric rollers are existing technology; they house the motor and reducer together inside the roller body and are commercially available. The central shaft of the electric roller does not rotate, but the rollers on it rotate. The end of the central shaft has a cable outlet for introducing a power cord. The roller of the electric roller serves as the work roller 2, and the first rotation drive mechanism consists of a motor and reducer installed inside the roller. In this case, the moving drive mechanism is connected to the non-rotating central shaft, which drives the electric roller to move.

[0036] The moving drive can have various implementations, such as Figure 1As shown, the moving drive component is a cylinder, with both ends of the electric roller's central shaft connected to the piston rods of two cylinders respectively. The piston rods drive the electric roller to move linearly. In some embodiments, the moving drive component includes a rotating shaft and a motor for controlling the rotation of the rotating shaft. Both ends of the rotating shaft are connected to both ends of the electric roller's central shaft via connecting arms. The rotating shaft drives the electric roller to move along an arc. During the arc-shaped movement, the electric roller also experiences vertical or horizontal displacement. This method is suitable for work rollers 2 that require a small displacement distance. In some other embodiments, such as... Figure 2 and Figure 3 As shown, the moving drive component includes a cylinder 41, a lever arm 42, a limiting shaft 43, and a connecting arm 44. A sleeve shaft is rotatably sleeved on the limiting shaft 43; one end of the lever arm 42 is hinged to the piston rod of the cylinder 41, and the other end is connected to the sleeve shaft; one end of the connecting arm 44 is connected to the sleeve shaft, and the other end is connected to the central shaft of the electric roller of the work roller 2. In use, as... Figure 2 and Figure 3 As shown, when the piston rod of cylinder 41 moves upward, it drives the right end of lever arm 42 to move upward, causing the left end of lever arm 42 to rotate the sleeve shaft counterclockwise relative to the limiting shaft 43, and causing the limiting shaft 43 to move a small distance to the right. The rotation of the sleeve shaft will cause the right end of connecting arm 44 to rotate counterclockwise, and the slight rightward movement of the limiting shaft 43 will also cause the right end of connecting arm 44 to move slightly to the right, thereby causing the working roller 2 connected to the left end of connecting arm 44 to rotate counterclockwise and move slightly to the right closer to the abutting roller 1; thus completing the adjustment of the distance between working roller 2 and abutting roller 1. The fixed support plate near the punching device has a transverse strip hole, and the limiting shaft 43 is set in the transverse strip hole and can only move along the transverse strip hole. The transverse strip hole does not need to be too long. In some embodiments, the wall of the transverse strip hole has an insert bar, and the limiting shaft 43 has a slot for inserting the insert bar to limit unnecessary rotation of the limiting shaft 43. In this embodiment, the working roller 2 is suspended on the abutting roller 1 under the action of the connecting arm 44. In some embodiments, fixed support plates are provided on both sides of the working roller 2 in the axial direction of the electric drum. The fixed support plates are provided with guide holes whose paths are consistent with the movable path of the electric drum. The end of the electric drum's central shaft passes through the guide holes and is threadedly connected to the stop plate, so that the stop plate abuts against the fixed support plate. When it is necessary to adjust the position of the electric drum, the abutment of the stop plate against the support plate is released.

[0037] In the work roll 2, the perforation module 21 can be fixed to the work roll 2 or detachably connected to the work roll 2. The detachable connection is not limited in implementation; for example, in some embodiments, the surface of the work roll 2 has several threaded grooves along the circumferential direction, and the perforation module 21 has studs, with the two detachably connected by a threaded structure. The shape of the perforation module 21 is not limited and can be freely set according to the shape of the required holes on the cigarette tipping paper, such as being circular, square, or pentagonal.

[0038] In addition, to achieve continuous perforation, a transport roller assembly is included for continuously transporting cigarette tipping paper through the working channel. The structure of the transport roller assembly is not limited; commonly used roller assemblies in the prior art can be used, such as at least an unwinding shaft, a first pressing group, a second pressing group, and a rewinding shaft. Both the first and second pressing groups include two pressure rollers. The paper is unwound from the unwinding shaft, smoothed between the two pressure rollers of the first pressing group, and then fed into the working channel, where it remains taut on the abutment roller 1. It is then smoothed again between the two pressure rollers of the second pressing group, and finally fed into the rewinding shaft for winding. Based on this, in some embodiments, to improve the smoothing effect, the distance between the two pressure rollers in the first and second pressing groups can be adjusted. For example, one pressure roller can be connected to a cylinder; another example is connecting one pressure roller to a rotating roller, and connecting the rotating roller to the cylinder via a connecting rod. The movement of the cylinder piston rod drives the rotating roller to rotate, thereby causing the pressure roller to press against the other pressure roller to flatten the paper.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A perforation device for cigarette tipping paper, comprising an abutment roller (1), a working roller (2), a moving drive for moving the abutment roller (1) and / or the working roller (2), and a first rotating drive for rotating the working roller (2); a working channel for cigarette tipping paper to pass through is formed between the abutment roller (1) and the working roller (2); characterized in that: The working roller (2) has a plurality of perforated modules (21) arranged along the circumferential direction. The abutting roller (1) includes a support part that abuts against the perforated modules (21). The support part or the perforated modules (21) is provided with negative pressure adsorption holes (11). It also includes a negative pressure airflow element that provides negative pressure adsorption force for the negative pressure adsorption hole (11).

2. A tipping paper perforating device for cigarettes according to claim 1, characterized in that: It also includes a second rotation drive for driving the abutment roller (1) to rotate, and the abutment roller (1) has a perforation groove (12) on its surface along the circumferential direction that can engage with the perforation module (21); the negative pressure adsorption hole (11) is disposed in the perforation groove (12).

3. A tipping paper perforating device for cigarettes according to claim 2, characterized in that: The abutting roller (1) includes a center roller (13) and a sleeve (14) rotatably sleeved on the center roller (13). The second rotating member drives the sleeve (14) to rotate around the center roller (13). The perforated groove (12) and the negative pressure adsorption hole (11) are provided on the sleeve (14). The center roller (13) is hollow inside to form a flow channel. The flow channel is connected to the negative pressure airflow member. The center roller (13) is provided with a communication port for connecting the negative pressure adsorption hole (11) and the flow channel.

4. A tipping paper perforating device for cigarettes according to claim 3, characterized in that: The diameter of the negative pressure adsorption hole (11) increases along the direction from the perforated groove (12) to the flow channel.

5. A tipping paper perforating device for cigarettes according to claim 1, characterized in that: It also includes a secondary cleaning structure, which includes a waste removal nozzle (3) and a waste removal airflow component that provides positive pressure airflow or negative pressure adsorption force to the waste removal nozzle (3). The outlet of the waste removal nozzle (3) faces the working channel. The waste removal nozzle (3) is located downstream of the working roller (2) in the rotation direction relative to the abutment roller (1).

6. A tipping paper perforating device for cigarettes according to claim 5, characterized in that: The secondary cleaning structure also includes an adjusting component for adjusting the angle of the waste removal nozzle (3) toward the working channel.

7. A tipping paper perforating device for cigarettes according to claim 1, characterized in that: The punching module (21) is detachably connected to the working roller (2).

8. The perforation device for cigarette tipping paper according to claim 1, characterized in that: The working roller (2) is positioned above the abutting roller (1), and the moving drive unit drives the working roller (2) to move relative to the abutting roller (1).

9. A tipping paper perforating device for cigarettes according to claim 8, characterized in that: The moving drive component includes a cylinder (41), a lever arm (42), a limiting shaft (43), and a connecting arm (44); the limiting shaft (43) is rotatably fitted with a sleeve shaft; one end of the lever arm (42) is hinged to the piston rod of the cylinder (41), and the other end is connected to the sleeve shaft; one end of the connecting arm (44) is connected to the sleeve shaft, and the other end is connected to the working roller (2).

10. A tipping paper perforating device for cigarettes according to claim 1, characterized in that: It also includes a set of transport rollers for transporting cigarette tipping paper through the working channel.

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