Cigarette cutting device

Abstract

The present invention discloses a cigarette cutting device, comprising a drum assembly, which includes a front drum and a rear drum; the butt end surfaces of the front drum and the rear drum are positioned to form a slit and a chip storage groove located inside the slit; a cutting knife is mounted on the radially outer side of the drum assembly, and the blade of the cutting knife extends into the slit; a gas pipe seat extends into the front drum and the rear drum, and the front drum and the rear drum are both provided with radially through-going air suction holes, so that the negative pressure environment formed by the inner hole of the gas pipe seat can absorb cigarettes outside the drum assembly through the air suction holes; a plurality of inclined cleaning channels are connected between the gas pipe seat and the chip storage groove, so that under the negative pressure environment, debris in the chip storage groove can be sucked into the inner hole of the gas pipe seat through the cleaning channels. The present invention uses the suction force derived from the negative pressure of the cleaning channels to suck away debris in the chip storage groove, thereby eliminating the accumulation of paper scraps and cigarette foam, thereby improving the effective operation rate of the equipment, improving maintenance efficiency, and ensuring consumer satisfaction with the quality of cigarette products.

Description

Technical Field

[0001] The present invention relates to the field of cigarette processing, and in particular to a cigarette cutting device. Background Art

[0002] The cigarette cutting device is used to cut cigarettes into multiple sections. Due to reasons such as cigarette cutting, cigarette conveying and the sharpness of the circular blade, some cigarette foam, broken paper and other debris will be retained in the chip storage groove. The debris will accumulate more and more, causing the movement of the alloy circular blade in the chip storage groove to be obstructed, causing the cutting edge of the alloy circular blade to be damaged, thereby affecting the cigarette cutting quality.

[0003] To address this issue, existing technologies incorporate a scraper into cigarette cutting devices to remove paper scraps from the chip trough. However, in practice, this device still suffers from incomplete paper scrap removal, resulting in accumulation of debris and premature damage to the alloy circular blades, making it difficult to guarantee effective cigarette cutting. Consequently, some cigarettes, such as empty cigarettes and those with air leaks, are discarded after wrapping.

[0004] Survey data revealed that excessive accumulation in the chip trough of the cigarette cutting device caused damage to the alloy blades, resulting in a significant number of discarded cigarettes. Statistics show that this single issue alone resulted in a cumulative monthly maintenance time of 490 minutes, with a total weight of 251 kg of discarded cigarettes. This weight accounted for an average of 50.64% of the remaining cigarettes that day, significantly exceeding the target for residual cigarette consumption. Analysis also revealed that the average maintenance time for the cigarette cutting device was 42 minutes. Relying solely on drum maintenance cannot address the problem of excessive accumulation in the chip trough of the drum wheel, which in turn damages the alloy blades and generates discarded cigarettes during production. Summary of the Invention

[0005] In order to overcome the deficiencies in the prior art, the present invention provides a cigarette cutting device.

[0006] This device improves upon the existing cigarette cutting device structure by designing a negative pressure inclined cleaning channel. This channel is connected to the negative pressure suction area on the gas distribution pipe seat, and the negative pressure suction force is directed into the chip storage trough. As the locomotive operates, the paper scraps and cigarette foam generated during cigarette cutting and dropped into the cigarette cutting device's chip storage trough are sucked away by the suction force generated by the negative pressure in the cleaning channel and subsequently removed to the dust removal duct, thereby eliminating the accumulation of paper scraps and cigarette foam. This improves the equipment's effective operating rate, enhances maintenance efficiency, and ensures consumer satisfaction with cigarette product quality.

[0007] The technical solution adopted by the present invention to solve the technical problem is:

[0008] A cigarette cutting device comprising

[0009] The drum assembly includes a front drum and a rear drum arranged coaxially; a slit and a chip storage groove located inside the slit are positioned on the butting end surfaces of the front drum and the rear drum, and the cigarette is located on the outer periphery of the front drum and the rear drum and straddles the slit;

[0010] a cutting knife mounted on the radially outer side of the drum assembly, wherein the blade of the cutting knife extends into the cutting slit for cutting the cigarette;

[0011] a gas distribution pipe seat extending into the front drum and the rear drum, wherein radially penetrating air suction holes are provided on the front drum and the rear drum, and a negative pressure suction area is provided on the gas distribution pipe seat for connecting the air suction holes of the front drum and the rear drum with the inner hole of the gas distribution pipe seat, so that the negative pressure environment formed by the inner hole of the gas distribution pipe seat adsorbs the cigarette outside the drum assembly through the air suction holes;

[0012] A plurality of cleaning channels are connected between the gas distribution pipe seat and the chip storage groove, so that the debris in the chip storage groove can be sucked into the inner hole of the gas distribution pipe seat through the cleaning channels under a negative pressure environment;

[0013] The cleaning channel and the air suction hole are not connected to each other. One end of the cleaning channel is located at the bottom of the chip storage groove, and the other end passes through to the axial position corresponding to the negative pressure suction area.

[0014] As an improvement to the above technical solution, the front end of the gas distribution pipe seat is a stepped hollow cylinder and extends into the front drum and the rear drum, and the rear end is connected to the locomotive transmission shaft seat;

[0015] Two rows of negative pressure suction areas are arranged at intervals at the front end of the distribution pipe seat, and the negative pressure suction areas correspond to and are connected with the axial positions of the suction holes of the front drum wheel and the suction holes of the rear drum wheel respectively.

[0016] As an improvement of the above technical solution, the front drum and the rear drum are both provided with two circles of suction holes, one end of the cleaning channel is located in the chip storage groove of the rear drum, and the other end is located in the middle of the two axial circles of suction holes, and is located in the middle of the circumferential negative pressure suction area of ​​the distribution pipe seat.

[0017] As an improvement of the above technical solution, the cleaning channel is a straight channel set at an angle, and the diameter of the cleaning channel is 5.5 mm.

[0018] As an improvement of the above technical solution, the negative pressure suction area includes a plurality of ventilation grooves and step grooves circumferentially spaced at the front end of the distribution pipe seat, wherein the ventilation grooves are connected to the inner hole of the distribution pipe seat, and the step grooves are sunken grooves opened on the circumferential surface of the distribution pipe seat.

[0019] As an improvement of the above technical solution, the negative pressure suction zone occupies an arc range of 200 to 270 degrees on the front circumferential surface of the distribution pipe seat, so that at least half or more of the cleaning channels are connected to the negative pressure suction zone at the same time.

[0020] As an improvement to the above technical solution, an axial sinking groove is provided in the circumferential area of ​​the gas distribution pipe seat where no negative pressure suction zone is provided.

[0021] As an improvement to the above technical solution, a shaft sleeve is formed at the end of the rear drum, and the front drum is sleeved on the shaft sleeve.

[0022] As an improvement of the above technical solution, the inner end faces of the front and rear drums are positioned to form a slit, the slit gap is 0.5 mm, the chip storage groove is located at the lower side of the slit, and the cutting knife is located in the middle of the slit for operation.

[0023] As an improvement to the above technical solution, the two side walls of the slit are inclined surfaces.

[0024] As an improvement to the above technical solution, the cross-section of the chip storage groove is rectangular.

[0025] As an improvement of the above technical solution, 9 cleaning channels are evenly connected between the gas distribution pipe seat and the chip storage groove at equal intervals.

[0026] As an improvement of the above technical solution, a plurality of axially extending receiving grooves are formed on the outer periphery of the front drum wheel and the rear drum wheel, and the plurality of receiving grooves are evenly arranged circumferentially. The air suction holes pass through to the bottom of the receiving grooves, and the cigarettes are located in the receiving grooves.

[0027] The beneficial effects brought by the present invention are:

[0028] 1. This device adds a cleaning channel at the bottom of the chip groove, so that the chips in the chip groove are adsorbed into the distribution pipe seat through the cleaning channel. This method of using negative pressure adsorption to remove smoke foam, debris and other debris in the chip groove has high cleaning efficiency and good cleaning effect, and can effectively clean the chip groove without disassembling the drum wheel.

[0029] 2. The present invention arranges the cleaning channel into a straight channel, and sets it at an angle, and does not pass through the air suction hole. This is the main difference from the existing technology. This design can avoid the cleaning channel being connected to the air suction hole and affecting the negative pressure environment in the air suction hole, which may cause the accommodating groove to reduce the adsorption force of cigarettes, and also avoid the air suction hole reducing the negative pressure environment in the cleaning channel and affecting the cleaning effect of the chip storage groove; the design of the inclined cleaning channel makes its inner end face the negative pressure suction side, so that the negative pressure adsorption force is more direct and more sufficient, the cleaning effect is better, and the blockage of the negative pressure channel is avoided.

[0030] 3. As the cutting knife extends into the cutting seam and negative pressure air is introduced into the chip storage groove, it can play the role of cooling the cutting knife during the high-speed operation of the cutting knife, thereby improving the cutting quality and effectively protecting the cutting knife, thereby improving the cutting quality of cigarettes and extending the service life of the cutting knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0032] Figure 1 A schematic diagram of the three-dimensional structure of a cigarette cutting device provided by an embodiment of the present invention;

[0033] Figure 2 A three-dimensional cross-sectional view of a cigarette cutting device provided by an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of the three-dimensional structure of the rear drum of the cigarette cutting device provided by an embodiment of the present invention;

[0035] Figure 4 Schematic diagram of the three-dimensional structure of the gas distribution pipe seat of the cigarette cutting device provided by the embodiment of the present invention Figure 1 ;

[0036] Figure 5 Schematic diagram of the three-dimensional structure of the gas distribution pipe seat of the cigarette cutting device provided by the embodiment of the present invention Figure 2 .

[0037] Reference numerals:

[0038] 11-front drum; 12-rear drum; 121-sleeve; 13-cutting slit; 14-chip storage groove; 15-air suction hole; 16-accommodation groove; 17-cleaning channel; 20-cutting knife; 30-distribution pipe seat; 31-venting groove; 32-step groove. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0041] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0042] Reference Figures 1 to 4 This embodiment is a cigarette cutting device, which mainly includes a drum assembly, a cutting knife 20 and a gas distribution pipe seat 30. Among them:

[0043] The drum assembly includes a coaxially arranged front drum 11 and a rear drum 12. The front drum 11 and the rear drum 12 are coaxially arranged and have the same circumferential height. A sleeve 121 is formed at the front end of the rear drum 12, and the front drum 11 is sleeved on the sleeve 121. The butting end surfaces of the front drum 11 and the rear drum 12 are positioned to form a slit 13 and a chip groove 14 located inside the slit 13. The gap of the slit 13 is 0.5 mm, and the chip groove 14 is located below the slit 13. The cutting blade 20 operates in the middle of the slit 13. The cigarette is located on the outer periphery of the front drum 11 and the rear drum 12 and straddles the slit 13. The radial inner side of the slit 13 is surrounded by the chip groove 14, which extends circumferentially to form a ring. The cross-sectional structure of the chip groove 14 is rectangular.

[0044] The cutter 20 is mounted radially above and outside the drum assembly, with its blade extending into the slit 13 to cut the cigarette. In this embodiment, the cigarette straddling the slit 13 can be cut by rotating the cutter 20 or the drum assembly, and the chips enter the chip storage groove 14.

[0045] The front end of the gas distribution pipe seat 30 is a stepped hollow cylinder that extends into the front and rear drums 11, 12. The rear end is connected to the locomotive's drive shaft seat. Both the front and rear drums 11, 12 are provided with radially extending air intake holes 15. Specifically, each drum 11 and 12 has two circles of air intake holes 15. The gas distribution pipe seat 30 is provided with a negative pressure suction zone that connects the air intake holes 15 of the front and rear drums 11, 12 with the inner bore of the gas distribution pipe seat 30. This creates a negative pressure environment within the inner bore of the gas distribution pipe seat 30, which draws cigarettes outside the drum assembly through the air intake holes 15.

[0046] Two rows of negative pressure suction areas are arranged at intervals at the front end of the distribution pipe seat 30. The negative pressure suction areas correspond to the axial positions of the suction holes 15 of the front drum wheel 11 and the suction holes 15 of the rear drum wheel 12 and are connected.

[0047] Each negative pressure suction zone includes a plurality of ventilation grooves 31 and stepped grooves 32 circumferentially spaced apart at the front end of the gas distribution pipe seat 30. The ventilation grooves 31 are connected to the inner bore of the gas distribution pipe seat 30, and the stepped grooves 32 are sunken grooves formed on the circumferential surface of the gas distribution pipe seat 30. In this way, the suction holes 15 of the front drum 11 and the suction holes 15 of the rear drum 12 are always connected to the inner bore of the gas distribution pipe seat 30 via the ventilation grooves 31 and stepped grooves 32, while also making the negative pressure more concentrated and sufficient. Thus, under the action of the negative pressure device, the inner bore of the gas distribution pipe seat 30 is connected to the suction holes 15, creating a negative pressure state within the suction holes 15. Cigarettes adhere to the outer circumference of the drum assembly in a circumferential arrangement due to the suction force of the suction holes 15.

[0048] In this embodiment, a plurality of cleaning channels 17 are connected between the air distribution pipe seat 30 and the chip storage groove 14, which can suck the debris in the chip storage groove 14 into the inner hole of the air distribution pipe seat 30 through the cleaning channels 17 under a negative pressure environment, thereby achieving the removal of chips in the cleaning channels 17.

[0049] It should be noted that the cleaning channel 17 and the suction hole 15 are not connected to each other. One end of the cleaning channel 17 is located at the bottom of the chip storage groove 14, and the other end passes through to the axial position corresponding to the negative pressure suction area.

[0050] In a preferred embodiment, the circumferential arc of the negative pressure suction zone is set to 200-270 degrees. This range ensures that the suction holes 15 have sufficient negative pressure suction force on the cigarettes, while also ensuring that at least half of the cleaning channels 17 are connected to the negative pressure suction zone at any one time. In this embodiment, the circumferential arc of the negative pressure suction zone is set to 236 degrees.

[0051] In a preferred embodiment, reference Figure 5An axial sink groove is provided in the area of ​​the distribution pipe seat 30 where no negative pressure suction zone is provided. The smoke foam, shavings and other debris removed by the cleaning channel 17 may be brought into the contact surface between the drum assembly and the distribution pipe seat 30 due to the rotation of the drum assembly, which may cause the drum assembly to be squeezed by the debris and unable to rotate normally. For this reason, the axial sink groove is provided. When smoke foam and shavings are brought into the contact surface, they can fall into the axial sink groove in time, thereby avoiding long-term squeezing and squeezing of the drum assembly. At the same time, the axial sink groove can also reduce the wear of the inner surface of the drum assembly during the rotation process in normal times, thereby extending its service life.

[0052] In a preferred embodiment, the cleaning channel 17 is a straight channel arranged at an angle of 26 to 42 degrees. This angle allows the outer end of the cleaning channel 17 to penetrate the bottom of the chip storage groove 14, and the inner end of the cleaning channel 17 to penetrate the position of the ventilation groove 31 of the gas distribution pipe seat 30, for example, to penetrate to the area corresponding to the ventilation groove 31, or to penetrate to the position corresponding to the stepped groove 32. In this way, under the action of negative pressure, the chips in the chip storage groove 14 pass through the inclined straight cleaning channel 17, the ventilation groove 31 (or pass through the stepped groove 32 and then the ventilation groove 31) in sequence, and enter the gas distribution pipe seat 30.

[0053] In a preferred embodiment, the inclination angle of the cleaning channel 17 is 34 degrees, so that one end of the cleaning channel 17 is located in the chip storage groove 14 of the rear drum 12, and the other end is located in the middle of the two axial circles of suction holes 15, and is exactly located in the middle of the circumferential negative pressure suction area of ​​the distribution pipe seat 30.

[0054] In a preferred embodiment, nine cleaning channels 17 are evenly spaced and connected between the gas distribution pipe seat 30 and the chip storage groove 14. Based on the circumferential curvature of the negative pressure suction zone in this embodiment, six cleaning channels 17 are connected to the negative pressure suction zone at the same time to ensure the removal of cutting debris.

[0055] In a preferred embodiment, a plurality of axially extending receiving grooves 16 are formed on the outer periphery of the front drum 11 and the rear drum 12. The plurality of receiving grooves 16 are evenly arranged circumferentially. The air suction holes 15 pass through to the bottom of the receiving grooves 16, and the cigarettes are located in the receiving grooves 16.

[0056] In a preferred embodiment, the two side walls of the slit 13 are symmetrically arranged inclined surfaces.

[0057] In addition, it should be noted that:

[0058] Although the cleaning channel 17 can be made to pass vertically and radially through the inner hole of the distribution pipe seat 30, this requires opening a separate ventilation groove 31 on the distribution pipe seat 30 to connect to the cleaning channel 17. In addition to requiring the redesign of the distribution pipe seat 30 and increasing the cost of processing the distribution pipe seat 30, this approach will also lead to a decrease in the original negative pressure adsorption force of the distribution pipe seat 30, and then the negative pressure adsorption force of the suction hole 15 will be reduced due to excessive dispersion of the negative pressure wind, affecting its cigarette adsorption effect and causing problems such as smoke falling.

[0059] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cigarette cutting device, characterized in that: include The drum assembly includes a front drum and a rear drum arranged coaxially; a slit and a chip storage groove located inside the slit are positioned on the butting end surfaces of the front drum and the rear drum, and the cigarette is located on the outer periphery of the front drum and the rear drum and straddles the slit; a cutting knife mounted on the radially outer side of the drum assembly, wherein the blade of the cutting knife extends into the cutting slit for cutting the cigarette; a gas distribution pipe seat extending into the front drum and the rear drum, wherein radially penetrating air suction holes are provided on the front drum and the rear drum, and a negative pressure suction area is provided on the gas distribution pipe seat for connecting the air suction holes of the front drum and the rear drum with the inner hole of the gas distribution pipe seat, so that the negative pressure environment formed by the inner hole of the gas distribution pipe seat adsorbs the cigarette outside the drum assembly through the air suction holes; A plurality of cleaning channels are connected between the gas distribution pipe seat and the chip storage groove, so that the debris in the chip storage groove can be sucked into the inner hole of the gas distribution pipe seat through the cleaning channels under a negative pressure environment; The cleaning channel and the air suction hole are not connected to each other. The cleaning channel is arranged obliquely with an inclination angle ranging from 26 to 42 degrees. One end of the cleaning channel is located at the bottom of the chip storage groove, and the other end passes through the axial position corresponding to the negative pressure suction area. The negative pressure suction area includes a plurality of ventilation grooves and stepped grooves circumferentially spaced apart at the front end of the distribution pipe seat, wherein the ventilation grooves are connected to the inner hole of the distribution pipe seat, and the stepped grooves are sunken grooves opened on the circumferential surface of the distribution pipe seat; The negative pressure suction zone occupies an arc range of 200 to 270 degrees on the front circumference of the gas distribution pipe seat, so that at least half or more of the cleaning channels are connected to the negative pressure suction zone at the same time; An axial sinking groove is provided in the circumferential area of ​​the gas distribution pipe seat where no negative pressure suction zone is provided.

2. The cigarette cutting device according to claim 1, characterized in that: The front end of the gas distribution pipe seat is a stepped hollow cylinder and extends into the front drum and the rear drum, and the rear end is connected to the locomotive transmission shaft seat; Two rows of negative pressure suction areas are arranged at intervals at the front end of the distribution pipe seat, and the negative pressure suction areas correspond to and are connected with the axial positions of the suction holes of the front drum wheel and the suction holes of the rear drum wheel respectively.

3. The cigarette cutting device according to claim 1, characterized in that: The front drum and the rear drum are both provided with two circles of suction holes. One end of the cleaning channel is located in the chip storage groove of the rear drum, and the other end is located in the middle of the two axial circles of suction holes and in the middle of the circumferential negative pressure suction area of ​​the distribution pipe seat.

4. The cigarette cutting device according to claim 1, characterized in that: The inner end surfaces of the front and rear drums are positioned to form a cutting slot, the chip storage groove is located at the lower side of the cutting slot, and the cutting knife is located in the middle of the cutting slot for operation.

5. The cigarette cutting device according to claim 1, characterized in that: The two side walls of the slit are inclined surfaces.

6. The cigarette cutting device according to claim 1, characterized in that: There are 9 cleaning channels evenly connected between the gas distribution pipe seat and the chip storage groove at equal intervals.

7. The cigarette cutting device according to claim 1, characterized in that: A plurality of axially extending receiving grooves are formed on the outer periphery of the front drum and the rear drum. The plurality of receiving grooves are evenly arranged circumferentially. The air suction holes extend through the bottom of the receiving grooves, and the cigarettes are located in the receiving grooves.

Images