A cutting device of filter rod cigarettes and a cigarette making machine

Abstract

The application discloses a cutting device for filter rod cigarettes and a cigarette making machine. The cutting device is used for cutting thin-wall filter rod cigarettes and comprises a roller assembly and a cutter assembly. The roller assembly comprises a roller and a roller shaft. The roller shaft is inserted into the roller. The roller is provided with a conveying groove, a waste cigarette removing groove and a pressure relief groove. The conveying groove is arranged on the outer periphery of the roller in the axial direction. Double-length filter cigarettes are arranged in the conveying groove. The double-length filter cigarettes comprise a thin-wall filter section. The pressure relief groove is used for reducing the contact area of the thin-wall filter section pressed by the conveying groove. The cutter assembly comprises a cutter and a cutter shaft. The bottom of the cutter shaft is provided with a bearing seat. The bottom of the bearing seat and the top of the cutter shaft are surrounded by an eccentric sleeve. The surface of the thin-wall filter rod is prevented from being pressed and deformed by the pressure relief groove. The diameter and thickness of the cutter are reduced, so that the quality of the cut surface of the thin-wall filter rod is improved. The cigarette making machine comprises the cutting device for filter rod cigarettes, so that the cutting quality during the production of thin-wall filter rod cigarettes is improved.

Description

Technical Field

[0001] This invention relates to the field of tobacco manufacturing equipment technology, and more specifically, to a filter rod cigarette cutting device and a cigarette rolling machine. Background Technology

[0002] In the cigarette production process, a filter rod cutting device is needed to cut cigarettes made from filter rods of twice the length into two finished cigarettes of equal length. Therefore, the filter rod cutting device is a key component in cigarette production. Compared to cigarettes made from ordinary filter rods, thin-walled filter rod cigarettes have a thinner outer wall but higher hardness.

[0003] However, in existing cigarette rolling machines, the same filter rod cutting device is used for thin-walled filter rod cigarettes as for ordinary filter rod cigarettes, resulting in the failure to meet relevant quality requirements during the production of thin-walled filter rod cigarettes. Because the filter rod cutting blade is thicker and has a rougher surface, the thicker blade exerts stronger pressure on the end face of the thin-walled filter rod during high-speed cutting. This leads to significantly greater friction between the cutting blade and the end face of the thin-walled filter rod compared to ordinary filter rods. Consequently, the double-length filter cigarettes are subjected to torque generated by the cutting friction, causing them to rotate at a higher speed in the cigarette conveying trough. This results in quality defects in the finished cigarettes, including burrs at the ends, exposed tobacco, and wrinkles in the tipping paper. Furthermore, the rotation of the cigarettes causes the end tobacco to be thrown off, increasing the rate of empty cigarette ends and wasting production materials for the user.

[0004] In summary, how to provide a cutting device and cigarette rolling machine for filter rod cigarettes that can improve the cutting quality when rolling cigarettes with thin-walled filter rods is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a cutting device and a cigarette rolling machine for filter rod cigarettes, which can improve the cutting quality of double-length filter cigarettes when producing thin-walled filter rod cigarettes.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cutting device for filter rod cigarettes, used for cutting thin-walled filter rod cigarettes, includes: a roller assembly and a cutting assembly. The roller assembly includes a roller and a roller shaft, the roller shaft being inserted into the roller. The roller is provided with a conveying groove, a waste smoke removal groove, and a pressure relief groove. The conveying groove is axially located on the outer periphery of the roller. A double-length filter cigarette is provided in the conveying groove. The double-length filter cigarette includes a thin-walled filter section. The pressure relief groove is used to reduce the contact area of ​​the thin-walled filter section being squeezed by the conveying groove. The cutting assembly includes a cutting blade and a cutting shaft. A bearing seat is provided at the bottom of the cutting shaft. An eccentric sleeve is provided around the bottom of the bearing seat and the top of the cutting shaft.

[0008] A cutting device for filter rod cigarettes, wherein the pressure relief groove is provided on the outer wall of the roller along the circumferential direction, and the pressure relief groove is located in the thin-walled filter section.

[0009] A cutting device for a filter rod cigarette, wherein the width of the pressure relief groove is the same as the length of the thin-walled filter tip section.

[0010] A cutting device for filter rod cigarettes, wherein a dust suction channel is provided at the bottom of the pressure relief groove, the dust suction channel is radially arranged on the roller, an air distribution sleeve is provided between the roller and the roller shaft, and the air distribution sleeve is connected to the dust suction channel.

[0011] A cutting device for filter rod cigarettes, wherein a support and a pressure cap are respectively provided on both sides of the cutter, a first guide rail is provided on the top of the support, and a second guide rail is provided on the top of the pressure cap.

[0012] A cutting device for a filter rod cigarette, wherein the double-length filter cigarette further includes a regular filter section and a cigarette section, and both the first guide rail and the second guide rail are provided with grooves, the two sides of the grooves respectively supporting the thin-walled filter section and the regular filter section.

[0013] A cutting device for filter rod cigarettes, wherein a first bearing and a second bearing are respectively provided at both ends of the cutting shaft, the first bearing is located between the cutting shaft and the eccentric sleeve, and the second bearing is located in the bearing seat.

[0014] A cutting device for a filter rod cigarette, wherein the bearing housing and the eccentric sleeve are connected by threads.

[0015] A cutting device for filter rod cigarettes, wherein multiple conveying grooves are provided, the multiple conveying grooves are evenly distributed on the outer periphery of the roller, and the surface of each conveying groove is coated.

[0016] A cigarette rolling machine, characterized in that the cigarette rolling machine includes a filter rod cigarette cutting device as described above.

[0017] Compared to the prior art, the filter rod cigarette cutting device provided by the present invention is used for cutting thin-walled filter rod cigarettes, including: a roller assembly and a cutter assembly. The roller assembly includes a roller and a roller shaft, the roller shaft being inserted into the roller. The roller is provided with a conveying groove, a waste smoke removal groove, and a pressure relief groove. The conveying groove is axially located on the outer periphery of the roller. A double-length filter cigarette is provided in the conveying groove. The double-length filter cigarette includes a thin-walled filter section. The pressure relief groove is used to reduce the contact area of ​​the thin-walled filter section being squeezed by the conveying groove. The cutter assembly includes a cutter and a cutter shaft. The bottom of the cutter shaft is provided with a bearing seat, and the bottom of the bearing seat and the top of the cutter shaft are surrounded by an eccentric sleeve.

[0018] In the aforementioned structure, by setting a pressure-relief groove at the contact point between the conveying groove and the thin-walled filter section of the double-length filter cigarette, the contact area of ​​the thin-walled filter rod, which has already been wrapped in tipping paper, under the pressure of the conveying groove can be reduced, thus preventing quality defects caused by deformation of the tipping paper on the surface of the thin-walled filter rod. By using an eccentric sleeve around the cutter shaft, which can allow the transmission gear to be disengaged, the distance between the rotation center of the roller and the rotation center of the cutter can be brought closer to the maximum extent, reducing the diameter and thickness of the cutter, increasing the strength of the cutter, and thus reducing the contact area between the cutter and the double-length filter cigarette, resulting in less frictional resistance and improving the quality of the cut surface of the thin-walled filter rod.

[0019] By spraying the surface of the conveying trough, a first guide rail and a second guide rail are respectively set on both sides of the cutter. Both the first guide rail and the second guide rail are provided with grooves. The thin-walled filter section and the ordinary filter section are supported on both sides of the grooves, so that the first guide rail and the second guide rail press the double-length filter cigarette into the sprayed conveying trough with a certain pressure, preventing the double-length filter cigarette from rotating and moving horizontally under the action of cutting force, and ensuring the cutting accuracy of the finished cigarette.

[0020] The cigarette machine provided by this invention includes a cutting device for filter rod cigarettes, which can improve the cutting quality when producing thin-walled filter rod cigarettes and has good processability and economy. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 A cross-sectional view of the filter rod cigarette cutting device provided by the present invention;

[0023] Figure 2 for Figure 1 A magnified view of a double-length filter cigarette being cut with a center cutter;

[0024] Figure 3 This is a side view of the filter rod cigarette cutting device provided by the present invention;

[0025] Figure 4 This is a schematic diagram of the segmentation of the double-length filter cigarette provided by the present invention.

[0026] in:

[0027] 1-Roller, 101-Conveying trough, 102-Waste smoke removal trough, 103-Pressure relief trough, 2-Roller shaft, 3-Double-length filter cigarette, 301-Thin-walled filter section, 302-Ordinary filter section, 303-Cigarette section, 4-Cutter, 5-Cutter shaft, 6-Bearing seat, 7-Eccentric sleeve, 8-Dust suction channel, 9-Gas distribution sleeve, 10-Support, 11-Pressure cap, 12-First guide rail, 13-Second guide rail, 14-Groove, 15-First bearing, 16-Second bearing, 17-Drive gear, 18-Base plate, 19-Pulley, 20-Fastener, 21-Protective cover. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] The filter rod cigarette cutting device provided in this application embodiment is used for cutting thin-walled filter rod cigarettes. Please refer to the appendix of the specification. Figure 1 To be continued Figure 4 The assembly includes a roller assembly and a cutter assembly. The roller assembly includes a roller 1 and a roller shaft 2. The roller shaft 2 is inserted into the roller 1. The roller 1 is provided with a conveying groove 101, a waste smoke removal groove 102 and a pressure relief groove 103. The conveying groove 101 is axially located on the outer periphery of the roller 1. A double-length filter cigarette 3 is provided in the conveying groove 101. The double-length filter cigarette 3 includes a thin-walled filter section 301. The pressure relief groove 103 is used to reduce the contact area of ​​the thin-walled filter section 301 under the pressure of the conveying groove 101. The cutter assembly includes a cutter 4 and a cutter shaft 5. The bottom of the cutter shaft 5 is provided with a bearing seat 6. An eccentric sleeve 7 surrounds the bottom of the bearing seat 6 and the top of the cutter shaft 5.

[0031] One end of the roller shaft 2 is inserted and fixed on the drive gear 17, and the other end of the roller shaft 2 is connected to the roller 1 to drive the rotation of the roller 1. The conveying groove 101 on the roller 1 is equipped with a double-length filter cigarette 3. The waste smoke removal groove 102 is used to remove waste smoke. The pressure relief groove 103 can reduce the contact area of ​​the thin-walled filter rod that has been wrapped with water tipping paper by the conveying groove 101, and avoid the water tipping paper on the surface of the thin-walled filter rod from deforming due to compression and producing defective products. An eccentric sleeve 7 is fitted onto the outside of the cutter shaft 5 and the bearing seat 6. The eccentric sleeve 7 is fixed to the base plate 18 by means of screw connection. It should be noted that the eccentric sleeve 7 can allow the transmission gear to pass, and can bring the distance between the rotation center of the roller 1 and the rotation center of the cutter 4 to the maximum extent, thereby reducing the diameter of the cutter 4. At the same time, it reduces the thickness of the cutter 4, increases the strength of the cutter 4, and further reduces the contact area between the cutter 4 and the double-length filter cigarette 3, resulting in less frictional resistance and improving the surface quality of the thin-walled filter rod cut. Taking the specific embodiment provided in this application as an example, the thickness of the cutter 4 is reduced from 0.3 mm to 0.2 mm, and the diameter of the cutter 4 is reduced from 100 mm to 60 mm. The greater the eccentricity of the eccentric sleeve 7, the smaller the diameter of the cutter 4, but it should not interfere with the roller 1. The specific size of the cutter 4 is set according to the actual working conditions, and is not limited in this document.

[0032] The pressure relief groove 103 is provided on the outer wall of the roller 1 along the circumferential direction, and the pressure relief groove 103 is located in the thin-walled filter section 301.

[0033] The cutter 4 is located in the middle of the thin-walled filter section 301, cutting it in half to form two finished cigarettes. The pressure relief groove 103 is located inside the conveying groove 101 and within the thin-walled filter section 301. Since the cutter 4 will squeeze the thin-walled filter section 301 during the cutting process, and the thin-walled filter section 301 is wrapped with tipping paper, the pressure relief groove 103 can reduce the contact area of ​​the thin-walled filter rod being squeezed by the conveying groove 101, thus preventing the tipping paper on the surface of the thin-walled filter section 301 from deforming due to compression.

[0034] The width of the pressure relief groove 103 is the same as the length of the thin-walled filter section 301. In order to make the pressure relief groove 103 and the thin-walled filter section 301 fit together, the width of the pressure relief groove 103 is the same as the length of the thin-walled filter section 301. Specifically, the pressure relief groove 103 can be set as an annular groove that circles the outer circumference of the roller 1.

[0035] The bottom of the pressure relief groove 103 is equipped with a dust suction channel 8, which is radially positioned on the roller 1. An air distribution sleeve 9 is provided between the roller 1 and the roller shaft 2, and the air distribution sleeve 9 is connected to the dust suction channel 8. The dust suction channel 8 is designed to remove dust generated during filter rod cutting at any time, preventing dust accumulation at the cut and reducing wear on the cutter 4. It should be noted that the number of dust suction channels 8 can be set to multiple depending on the actual production situation, and the dust suction channel 8 is connected to the air distribution sleeve 9, which is connected to the compressed air cavity, allowing dust to be removed by compressed air.

[0036] The cutter 4 is provided with a support 10 and a pressure cover 11 on both sides respectively. The top of the support 10 is provided with a first guide rail 12, and the top of the pressure cover 11 is provided with a second guide rail 13.

[0037] The cutter 4 is rotatably connected to the cutter shaft 5 via the support 10. The pressure cap 11 and fasteners 20 fix the cutter 4 to the support 10 to prevent axial displacement of the cutter 4. The protective cover 21 protects the cutter 4 from impacts. The first guide rail 12 and the second guide rail 13 can press the double-length filter cigarette 3 into the conveying groove 101 with a certain pressure, preventing the double-length filter cigarette 3 from rotating and moving horizontally under the action of cutting force, thus ensuring the cutting accuracy of the finished cigarette.

[0038] The double-length filter cigarette 3 also includes a regular filter section 302 and a cigarette section 303. The first guide rail 12 and the second guide rail 13 are both provided with grooves 14, and the thin-walled filter section 301 and the regular filter section 302 are supported on both sides of the grooves 14 respectively.

[0039] The thin-walled filter section 301 is located in the middle of the double-length filter cigarette 3, and the cigarette sections 303 are located at both ends of the double-length filter cigarette 3. The ordinary filter section 302 is located between the thin-walled filter section 301 and the cigarette section 303. The first guide rail 12 and the second guide rail 13 are arc-shaped. The first guide rail 12 and the second guide rail 13 are in contact with the bottom surface of the double-length filter cigarette 3. A groove 14 is provided on the arc surface of the arc-shaped guide rail in the axial direction of the contact with the cigarette. In this way, the first guide rail 12 and the second guide rail 13 each form two guide rails. One guide rail is in contact with the thin-walled filter section 301, and the other guide rail is in contact with the ordinary filter section 302. The shape of the groove 14 is set according to the double-length filter cigarette 3 and is adapted to the double-length filter cigarette 3. The groove 14 can prevent the double-length filter cigarette 3 from deforming or wrinkling on the surface when the first guide rail 12 and the second guide rail 13 press the double-length filter cigarette 3 into the sprayed conveying groove 101 with a certain pressure.

[0040] The cutter shaft 5 has a first bearing 15 and a second bearing 16 at both ends. The first bearing 15 is located between the cutter shaft 5 and the eccentric sleeve 7, and the second bearing 16 is located in the bearing housing 6. One end of the cutter shaft 5 is inserted into the pulley 19 and driven by the pulley 19. The first bearing 15 and the second bearing 16 support the rotation of the cutter shaft 5. The second bearing 16 is located at the end of the cutter shaft 5 near the pulley 19 and is located in the hole of the bearing housing 6. The end of the eccentric sleeve 7 near the second bearing 16 is fixedly connected to the bearing housing 6, and the first bearing 15 is fixed in the hole at the other end of the eccentric sleeve 7.

[0041] The bearing housing 6 and the eccentric sleeve 7 are connected by threads. The bearing housing 6 and the eccentric sleeve 7 are fixedly connected, and the connection method can be specific to either screw connection or bolt connection. The threaded connection method has a simple structure, is convenient to disassemble and assemble, and has good practicality.

[0042] Multiple conveying grooves 101 are provided, and the multiple conveying grooves 101 are evenly distributed on the outer periphery of the roller 1. The surface of the conveying grooves 101 is all sprayed. The surface of the conveying grooves 101 can be sprayed with wear-resistant material, and the surface roughness of the conveying grooves 101 is ensured to be between 6.3-12.5 micrometers. In this way, the conveying grooves 101 can further prevent the double-length filter cigarette 3 from rotating and moving horizontally under the action of cutting force, thus ensuring the cutting accuracy of the finished cigarette.

[0043] The working process of the filter rod cigarette cutting device provided in this application is as follows: When the machine is running, the double-length filter cigarette 3 is adsorbed and fixed in the conveying groove 101 of the roller 1 by compressed air, and rotates with the rotation of the roller 1. During the rotation, the double-length filter cigarette 3 is cut off from the thin-walled filter section 301 by the high-speed rotating cutter 4. Before the thin-walled filter section 301 enters the cutter and during the cutting process, the first guide rail 12 and the second guide rail 13 press the double-length filter cigarette 3 with the thin-walled filter section 301 into the conveying groove 101. The degree of compression of the double-length filter cigarette 3 can be adjusted by adjusting the first guide rail 12 and the second guide rail 13 to ensure that the filter rod cigarette cutting device produces cigarette products that meet the user's quality requirements.

[0044] The cigarette machine provided in this application includes a filter rod cigarette cutting device as described above. By setting a pressure relief groove 103 at the contact position between the conveying groove 101 and the thin-walled filter section 301 of the double-length filter cigarette 3, the surface of the thin-walled filter rod is prevented from being squeezed and deformed. By reducing the diameter and thickness of the cutter 4, the quality of the cut surface of the thin-walled filter rod is improved. The first guide rail 12 and the second guide rail 13 prevent the double-length filter cigarette 3 from rotating and moving horizontally under the action of cutting force, thereby improving the cutting accuracy of the double-length filter cigarette 3. This device can comprehensively improve the cutting quality when producing thin-walled filter rod cigarettes and is economical and practical.

[0045] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities.

[0046] The cutting device for filter rod cigarettes and the cigarette rolling machine provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A cutting device for filter rod cigarettes, used for cutting thin-walled filter rod cigarettes, characterized in that, include: The roller assembly and the cutter assembly are provided. The roller assembly includes a roller (1) and a roller shaft (2). The roller shaft (2) is inserted into the roller (1). The roller (1) is provided with a conveying groove (101), a waste smoke removal groove (102), and a pressure relief groove (103). The conveying groove (101) is axially located on the outer periphery of the roller (1). A double-length filter cigarette (3) is provided in the conveying groove (101). The double-length filter cigarette (3) includes a thin-walled filter section (301). The pressure relief groove (103) is used to reduce the pressure on the thin-walled filter section (301). The contact area of ​​the extrusion groove (101); the cutter assembly includes a cutter (4) and a cutter shaft (5), the bottom of the cutter shaft (5) is provided with a bearing seat (6), the bottom of the bearing seat (6) and the top of the cutter shaft (5) are surrounded by an eccentric sleeve (7), the eccentric sleeve (7) can make way for the transmission gear, can bring the distance between the rotation center of the roller (1) and the rotation center of the cutter (4) closer, can reduce the diameter and thickness of the cutter (4) to reduce the contact area between the cutter (4) and the double-length filter cigarette (3); The cutter (4) is provided with a support (10) and a pressure cap (11) on both sides respectively. The top of the support (10) is provided with a first guide rail (12), and the top of the pressure cap (11) is provided with a second guide rail (13). The double-length filter cigarette (3) also includes a regular filter section (302) and a cigarette section (303). The first guide rail (12) and the second guide rail (13) are both provided with grooves (14). The two sides of the grooves (14) respectively support the thin-walled filter section (301) and the regular filter section (302). The pressure relief groove (103) is provided on the outer wall of the roller (1) along the circumferential direction, and the pressure relief groove (103) is located in the thin-walled filter section (301); the width of the pressure relief groove (103) is the same as the length of the thin-walled filter section (301).

2. The filter rod cigarette cutting device according to claim 1, characterized in that, The bottom of the pressure relief groove (103) is provided with a dust suction channel (8), which is radially located on the roller (1). An air distribution sleeve (9) is provided between the roller (1) and the roller shaft (2), and the air distribution sleeve (9) is connected to the dust suction channel (8).

3. The filter rod cigarette cutting device according to claim 1, characterized in that, The cutter shaft (5) has a first bearing (15) and a second bearing (16) at its two ends respectively. The first bearing (15) is located between the cutter shaft (5) and the eccentric sleeve (7), and the second bearing (16) is located in the bearing seat (6).

4. The filter rod cigarette cutting device according to claim 3, characterized in that, The bearing housing (6) and the eccentric sleeve (7) are connected by threads.

5. The filter rod cigarette cutting device according to claim 1, characterized in that, The conveying groove (101) is provided in multiple ways, and the multiple conveying grooves (101) are evenly distributed on the outer periphery of the roller (1). The surface of the conveying groove (101) is sprayed.

6. A cigarette rolling machine, characterized in that, The cigarette rolling machine includes a filter rod cigarette cutting device as described in any one of claims 1-5.

Images