Paper cutting drum wheel convenient for card replacement

Abstract

The paper cutting drum wheel comprises a wheel body, inserts and an outer flange plate, a plurality of inserts are assembled on the roller surface of the wheel body in a positioning mode, at least two sets of air suction flow channels are arranged in the wheel body corresponding to each insert, and the outer flange plate is arranged in the wheel body corresponding to each insert. One group of air suction flow channels are used for communicating the air outlet hole of the wheel body with the air inlet hole in the upper part area of the insert; the other group of air suction flow channels comprises a first branch channel and a second branch channel, the first branch channel extends from the air outlet hole of the wheel body to the butt joint end face of the wheel body and the outer flange plate, and the second branch channel extends from the butt joint end face of the wheel body to the air inlet holes in other areas of the insert and is communicated with the air inlet holes; and the outer flange plate is rotated to enable the curved groove to be communicated with the first branch channel and the second branch channel at the same time on the butt joint end face of the wheel body, and the second flow channel enables the air inlet holes in other areas on the insert to be communicated with the air outlet holes of the wheel body.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the cigarette technical field, concretely relates to a paper cutting drum wheel convenient to change card. BACKGROUND

[0002] Cigarette tipping paper is used for wrapping outside filter tip, and tipping paper piece wraps and rolls together filter tip section and cigarette rod after being cut, to form filter tip cigarette. In order to meet the needs of different consumers for appearance, taste and holding feeling of cigarette, different width tipping paper and different punching process are used in brand and specification design.

[0003] The paper cutting drum wheel of GD121H cigarette machine prior art is mainly used for cutting non pre-punched tipping paper, and then on-line punching is carried out by laser punching device. Two card numbers of tipping paper are pre-punched, but the width is inconsistent, and the production process and card changing link mainly exist following problems:

[0004] 1. When tipping paper is pre-punched tipping paper, glue often leaks to the front of tipping paper from the pre-punched position, so that cigarette stick adheres ash, and the quality of cigarette stick is affected. The main reason that glue leaks to the front of tipping paper is that when tipping paper is adsorbed to the paper cutting drum wheel, the pre-punched position makes glue leak to the front of tipping paper through small hole due to the suction force of negative pressure.

[0005] 2. The main function of the paper cutting drum wheel is to adsorb tipping paper, and the cutting of tipping paper is completed by the shearing movement of alloy insert blade edge and shearing blade. When card is changed, the width of tipping paper changes, the air hole width of the paper cutting drum wheel is also different, the corresponding specification paper cutting drum wheel needs to be disassembled and replaced, and the paper cutting knife needs to be rechecked, even the shearing blade needs to be replaced, which is time-consuming and laborious, and affects production efficiency.

[0006] 3. During the operation of the paper cutting drum wheel, impurities such as cigarette dust and dust are easy to enter the air suction hole, causing blockage. In order to ensure the cutting quality of tipping paper, the shearing wheel needs to be disassembled and removed to clean the impurities in the air suction hole of the paper cutting drum wheel during equipment maintenance. The weight of each shearing wheel is about 12kg, and the weight is relatively large, so disassembly, assembly and transportation are very inconvenient.

[0007] Therefore, it is necessary to develop and design a paper cutting hub convenient to change card, which can solve the problem of glue overflow of pre-punched tipping paper, and quickly adjust the air suction hole of the paper cutting hub when changing card. CONTENT OF THE UTILITY MODEL

[0008] The utility model discloses a paper cutting drum convenient to change card, need not to dismantle shearing wheel, shearing tool rest to be quick to adjust the air hole width of wind hole, adapt to the cutting width of water pine paper produced by different brands, realize quick change card, adjust the air suction hole of wheel hub, make the part of water pine paper pre-punching suspend on the wheel body, make the part of water pine paper pre-punching not directly contact with the surface of wheel body, avoid the phenomenon that the glue leaks to the front of water pine paper, effectively improve the quality of cigarette.

[0009] The utility model discloses a paper cutting drum convenient to change card, including wheel body, insert block and outer flange, the roll surface of wheel body is positioned and assembled with a plurality of insert block, the wheel body corresponds at least two groups of air suction channel built -in every insert block, wherein a group of air suction channel is used for the communication of the air outlet of wheel body with the air inlet in the upper part area of insert block, wherein another group of air suction channel includes the first branch way of the air outlet of wheel body extension to the butt joint end face of wheel body with outer flange and the second branch way of the air inlet in other area of insert block extension to the butt joint end face of wheel body and with it communication, the outer flange is set up with the curved groove, rotates the outer flange makes the curved groove in the butt joint end face of wheel body with the first branch way and second branch way simultaneous communication, makes the second flow channel with the air inlet in other area of insert block and the air outlet of wheel body communication.

[0010] Further, the roll surface of the wheel body is provided with a hole array for air inlet, the insert block is provided with an air inlet hole array corresponding to the hole array, and the air inlet hole array includes a plurality of air inlets; the air inlet hole array includes a first region, a second region and a third region, the first region is located between the second region and the third region, one of the air suction channels is communicated with the air inlets in the first region, and the other group of air suction channels is communicated with the air inlets in the second region and the third region.

[0011] Further, when the first branch way and the second branch way of the other group of air suction channels are communicated, the air inlets in the second region and the third region adsorb the water pine paper; when the first branch way and the second branch way are cut off, the air inlets in the second region and the third region do not adsorb the water pine paper.

[0012] Preferably, the air inlets on both sides of the second region and the third region are blocked, and the lowermost row of air inlets in the air inlet hole array is blocked, so that the pre-punched part of the water pine paper is suspended above the wheel body.

[0013] Further, the butt joint end face of the wheel body is provided with a group of air holes corresponding to each insert block, and a plurality of air hole groups are annularly distributed on the butt joint end face, the air hole group includes an air inlet hole and an air outlet hole, the air inlet hole is the air inlet hole of the first branch way, and the air outlet hole is the air outlet hole of the second branch way.

[0014] Further, the outer flange disc is provided with a non-through curved groove corresponding to each air hole group, and a plurality of curved grooves are annularly distributed on the back side of the outer flange disc; the groove width of the curved groove is at least consistent with the hole diameter of the air inlet hole and the air guide hole, and the groove length of the curved groove is at least consistent with the spacing between the air inlet hole and the air guide hole.

[0015] The curved groove covers the air inlet hole and the air guide hole, and is inverted on the two holes to make the two holes communicate.

[0016] Further, the wheel body is provided with an air outlet hole group corresponding to each insert, and the air outlet hole group comprises a first suction hole, a second suction hole and a third suction hole; the first suction hole and the second suction hole are air outlet holes of one of the air suction flow channels; and the third suction hole is an air outlet hole of the first branch channel.

[0017] Further, a plurality of air outlet hole groups on the wheel body are located on a negative pressure end surface of the wheel body, the negative pressure end surface is opposite to the butt joint end surface, an inner flange disc is arranged on the negative pressure end surface, a plurality of inner hole groups corresponding to the plurality of air outlet hole groups are arranged on the inner flange disc, the inner hole groups comprise a first inner hole corresponding to the first suction hole, a second inner hole corresponding to the second suction hole and a third inner hole corresponding to the third suction hole; and the inner hole groups on the inner flange disc are butt jointed with a negative pressure equipment.

[0018] Further, the air hole group is located on the outer ring side of the butt joint end surface, a plurality of positioning holes annularly distributed are arranged on the inner ring side of the butt joint end surface, a plurality of adjustment hole groups annularly distributed are arranged on the outer flange disc corresponding to the positioning holes, and the outer flange disc is fixedly assembled on the butt joint end surface of the wheel body through the adjustment hole groups and the positioning holes.

[0019] Further, the adjustment hole group comprises a first position hole and a second position hole; when the outer flange disc is fixed with the wheel body through the first position hole and the positioning hole, the curved groove is synchronously communicated with the air inlet hole and the air guide hole, so that the first branch channel is communicated with the second branch channel; and when the outer flange disc is fixed with the wheel body through the second position hole and the positioning hole, the back side of the outer flange disc synchronously closes the air inlet hole and the air guide hole, so that the communication between the first branch channel and the second branch channel is cut off.

[0020] Further, the distribution ring diameters of the plurality of first position holes are the same as the distribution ring diameters of the plurality of second position holes, so that after the outer flange disc is coaxially rotated and fixed with the wheel body on the butt joint end surface, the communication state or the cut-off state of the first branch channel and the second branch channel is maintained.

[0021] The beneficial effects of the utility model are as follows:

[0022] The paper cutting drum convenient for changing paper provided by the utility model can adjust the air passage of the air suction hole through rotating the outer flange, quickly adjust the corresponding air hole width, and satisfy the quick switching of two specifications of waterproof paper without disassembling the shearing wheel and the shearing tool holder.

[0023] The present application adjusts the on-off of the air suction hole on the insert block, suspends the pre-punched part of the water-proof paper on the wheel body, and makes the pre-punched part of the water-proof paper not directly contact with the surface of the wheel body, thereby avoiding the phenomenon of glue leakage to the front surface of the water-proof paper and effectively improving the quality of the cigarette.

[0024] When changing the paper, only the air hole needs to be adjusted to adapt to the corresponding specification of the tipping paper, and since the paper cutting drum is not disassembled, the paper cutting knife does not need to be re-calibrated, thereby saving the maintenance time and improving the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated into the specification and form part of the specification, illustrate the embodiments of the present application and, together with the description, serve to explain the principles of the present application. In these drawings, similar reference numerals are used to represent similar elements. The drawings in the following description are some embodiments of the present application, not all embodiments. For those skilled in the art, other drawings can be obtained from these drawings without creative labor.

[0026] Figure 1 It is a structure diagram of the paper cutting drum convenient for changing paper of the embodiment of the present application;

[0027] Figure 2 It is a schematic diagram of the hole position of the butt joint between the inner flange plate and the wheel body;

[0028] Figure 3 It is a schematic diagram of the hole position of the front side and back side of the outer flange plate;

[0029] Figure 4 It is a schematic diagram of the hole position of the butt joint end of the wheel body and the outer flange plate;

[0030] Figure 5 It is a schematic diagram of the distribution of the air suction hole of the insert block.

[0031] In the figure: 1, inner flange plate; 2, wheel body; 3, insert block; 4, outer flange plate; 11, inner hole group; 21, air hole group; 22, positioning hole; 23, air outlet hole group; 31, first area; 32, second area; 33, third area; 41, curved groove; 42, adjusting hole group; 111, first inner hole; 112, second inner hole; 113, third inner hole; 211, air guide hole; 212, air guide hole; 231, first suction hole; 232, second suction hole; 233, third suction hole; 421, first position hole; 422, second position hole. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application and the prior art, specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without any creative labor, and other embodiments can also be obtained. In addition, the design direction is only to represent the relative position relationship between the components, not the absolute position relationship.

[0033] Firstly, the paper cutting hub of the prior art is composed of a cutting wheel body, an insert block and an insert strip, and a graphite air distribution disc introduces the negative pressure air of a vacuum pump into the paper cutting drum, and the air suction hole on the insert block is acted on by the air duct inside the wheel body, so that the tipping paper sheet is adsorbed, and the adsorption area of the insert block is fixed and cannot be adjusted, so that the tipping paper of different sizes cannot be cut on one wheel body, and only one size corresponds to one paper cutting hub.

[0034] The insert strip and the paper cutting knife interact to form a shearing effect to complete the cutting of the tipping paper. Since the original paper cutting drum is mainly used for cutting tipping paper without pre-punching, and then the online punching is performed by a laser punching device, when the pre-punched tipping paper is used for production, the glue will often leak from the pre-punching position to the front surface of the tipping paper, so that the cigarette stick is adhered with ash, and the quality of the cigarette stick is affected.

[0035] The utility model discloses a paper cutting drum convenient to change card, please refer to Figures 1-5 , mainly including wheel body 2, insert block 3 and outer flange plate 4, the roll surface of wheel body 2 is positioned and assembled with multiple insert blocks 3, and wheel body 2 is built-in at least two groups of air suction ducts corresponding to each insert block 3, wherein one group of air suction ducts is used for connecting the air outlet hole of wheel body 2 with the air inlet hole in the upper part region of insert block 3;Wherein the other group of air suction ducts includes the first branch from the air outlet hole of wheel body 2 to the butt joint end face of wheel body 2 and the second branch from the butt joint end face of wheel body 2 to the air inlet hole in other regions of insert block 3 and is connected with it, and the curved groove 41 is set up on the outer flange plate 4, and the curved groove 41 is communicated with the first branch and the second branch on the butt joint end face of wheel body 2 by rotating the outer flange plate 4, so that the second flow channel is communicated with the air inlet hole in other regions of insert block 3 and the air outlet hole of wheel body 2.

[0036] In the present application, two groups of air suction ducts are taken as an example, and each group of air suction ducts can include multiple parallel or series branch ducts, that is, one group of air suction ducts can include multiple independent branch ducts or multiple branch ducts capable of being connected in series to form a complete flow channel. However, the two groups of air suction ducts are independent of each other.

[0037] In the present application, the hole array for air inlet is set up on the roll surface of wheel body 2, and multiple insert blocks 3 are positioned and assembled on the roll surface, as shown in Figure 1As shown in the figure, the inserts 3 are assembled along the axial direction of the wheel body 2, and different regions on the inserts 3 are provided with a plurality of air suction holes, and the air suction holes form an air suction hole array. In order to realize the adjustment of the suction size on a single cutting wheel hub, one group of air suction flow channels is connected with the air suction hole array in the middle, and the other group of air suction flow channels is connected with the air suction hole arrays on both sides. When it is necessary to expand the suction area, the second group of air suction flow channels is connected, and when it is necessary to have a smaller suction area, the second group of air suction flow channels is cut off, and the first group of air suction flow channels is always kept in a connected state.

[0038] In a specific embodiment, the air suction hole array includes a first region 31, a second region 32 and a third region 33, the first region 31 is located between the second region 32 and the third region 33, one group of air suction flow channels is connected with the air suction holes in the first region 31, and the other group of air suction flow channels is connected with the air suction holes in the second region 32 and the third region 33.

[0039] Specifically, when the first branch and the second branch of the other group of air suction flow channels (referred to as the second flow channel) are connected, the air suction holes in the second region 32 and the third region 33 suck the tipping paper; when the first branch and the second branch are cut off, the air suction holes in the second region 32 and the third region 33 do not suck the tipping paper. In this process, one group of air suction flow channels (referred to as the first flow channel) is always kept unblocked, and the first flow channel and the second flow channel are independent of each other and are both built-in in the inside of the wheel body 2.

[0040] In order to prevent glue leakage when the tipping paper of different sizes is pre-punched, the suction effect corresponding to the pre-punched part of the tipping paper can be removed. For example, the air suction holes on both sides of the second region 32 and the third region 33 are blocked, and the lowermost row of air suction holes in the air suction hole array is blocked, as shown in the figure, so that the pre-punched part of the tipping paper is suspended above the wheel body 2. Figure 5

[0041] It can be understood that the wheel body 2 is loaded with a plurality of inserts 3, each insert 3 corresponds to the built-in first flow channel and second flow channel, the region division on each insert 3 is the same, and the connection relationship between the flow channel and each region is the same.

[0042] In the embodiment of the application, the two branches of the second flow channel are connected and cut off at the abutting end face, and the state conversion is realized based on the rotation of the outer flange plate 4 and is kept by the fixing of the outer flange plate 4. The back side of the outer flange plate 4 is provided with a curved groove 41, and the ports of the two branches are connected through the curved groove 41, or the ports of the two branches are closed through the back side of the outer flange plate 4, so as to cut off the connection state.

[0043] ​In a specific embodiment, the abutment end face of the wheel body 2 is provided with a plurality of vent hole groups 21 corresponding to each insert 3, and the plurality of vent hole groups 21 are annularly distributed on the abutment end face. The vent hole group 21 includes an air inlet hole 211 and an air outlet hole 212, wherein the air inlet hole 211 can be the air inlet hole of the first branch, and the air outlet hole 212 can be the air outlet hole of the second branch.

[0044] The air inlet hole 211 and the air outlet hole 212 are the ports of the two branches. By rotating the outer flange 4, the curved groove 41 is simultaneously abutted with the two holes, so that the ports of the two branches are communicated, and the second flow channel is communicated; conversely, the second flow channel is disconnected.

[0045] Correspondingly, a non-penetrating curved groove 41 can be provided on the outer flange 4 corresponding to each vent hole group 21, and the plurality of curved grooves 41 are annularly distributed on the back side of the outer flange 4. The groove width of the curved groove 41 is at least consistent with the hole diameter of the air inlet hole 211 and the air outlet hole 212, and the groove length of the curved groove 41 is at least consistent with the spacing between the air inlet hole 211 and the air outlet hole 212.

[0046] It can be understood that the air inlet hole 211 and the air outlet hole 212 can be circular holes, and the two ends of the curved groove 41 can be arc groove structures. The length of the curved groove 41 is at least consistent with the length of the end points of the two holes, so that the curved groove 41 can be covered on the two holes in the form of inverted buckle, so that the two holes are communicated.

[0047] The plurality of vent hole groups 21 on the wheel body 2 and the plurality of curved grooves 41 on the outer flange 4 are annularly distributed and correspondingly arranged. When the curved groove 41 is aligned with the two holes, the two holes are communicated; conversely, the two holes are blocked by the back side of the outer flange 4, the two holes are cut off, and the air inlet hole in the part of the insert 3 connected by the second flow channel does not produce a negative pressure effect.

[0048] In the embodiment of the present application, the vent hole group 21 is located on the outer ring side of the abutment end face, and a plurality of positioning holes 22 are annularly distributed on the inner ring side of the abutment end face, as shown in Figure 4 The outer flange 4 is provided with a plurality of adjustment hole groups 42 corresponding to the positioning holes 22, and the outer flange 4 is fixedly assembled on the abutment end face of the wheel body 2 through the adjustment hole groups 42 and the positioning holes 22.

[0049] Specifically, the adjustment hole group 42 includes a first position hole 421 and a second position hole 422, and the two position holes correspond to two states of the second flow channel respectively.

[0050] When the outer flange 4 is fixed with the wheel body 2 through the first position hole 421 and the positioning hole 22, the curved groove 41 is synchronously communicated with the air inlet hole 211 and the air outlet hole 212, so that the first branch and the second branch are communicated; that is, the second flow channel is unobstructed, and the second region 32 and the third region 33 can adsorb tipping paper, and are suitable for wider size brands.

[0051] The outer flange 4 is fixed with the wheel body 2 through the second bit hole 422 and the positioning hole 22, and the back side of the outer flange 4 synchronously seals the air guide hole 211 and the air guide hole 212, so that the communication of the first branch and the second branch is cut off; that is, the second flow channel is cut off, the second area 32 and the third area 33 do not adsorb the tipping paper, and the first area 31 adsorbs the tipping paper, which can be adapted to small sizes of brands.

[0052] It can be understood that the distribution ring diameter of the plurality of first bit holes 421 is the same as that of the plurality of second bit holes 422, so that after the outer flange 4 is coaxially rotated and fixed with the wheel body 2 on the butt joint end face, the communication state or the cut-off state of the first branch and the second branch is maintained.

[0053] Exemplarily, when the brand needs to be replaced, the existing fixed bolts between the outer flange 4 and the wheel body 2 are disassembled, the outer flange 4 is rotated to align another bit hole with the positioning hole 22, and the bolts are re-fixed, so that the brand replacement is completed. The adsorption width can be quickly adjusted according to the required width of the tipping paper of the brand, and the cutting wheel, the tool holder and the like do not need to be disassembled.

[0054] And by comparing the original cutting paper hub, it is found that the outer flange 4 of the application can be disassembled, and when cleaning, the air holes and flow channels of the wheel body 2 can be cleaned without disassembling the wheel body 2.

[0055] In the embodiment of the application, the air outlet holes on the wheel body 2 can be arranged on the other end face and connected in communication with the negative pressure equipment, that is, the negative pressure end face; the air outlet holes are in communication with the air inlet holes, so that the negative pressure adsorption effect can be achieved to adsorb and position the tipping paper.

[0056] The wheel body 2 can correspond to each insert 3 to arrange an air outlet hole group 23, and the air outlet hole group 23 can include a plurality of air outlet holes corresponding to the first flow channel and the second flow channel.

[0057] Exemplarily, the air outlet hole group 23 includes a first suction hole 231, a second suction hole 232 and a third suction hole 233, the first suction hole 231 and the second suction hole 232 are air outlet holes of the first flow channel; and the third suction hole 233 is an air outlet hole of the first branch.

[0058] The first flow channel corresponds to the air inlet holes in the first area 31, and the air inlet holes in this area include two parts, as shown in Figure 5 The first suction hole 231 can correspond to the air inlet holes on the left side, and the second suction hole 232 can correspond to the air inlet holes on the right side.

[0059] In the embodiment of the application, the plurality of air outlet hole groups 23 on the wheel body 2 are located on the negative pressure end face of the wheel body 2, the negative pressure end face is opposite to the butt joint end face, and the two end faces of the wheel body 2 are respectively provided with the inner flange plate 1, the plurality of inner hole groups 11 corresponding to the plurality of air outlet hole groups 23 are arranged on the inner flange plate 1, the inner hole groups 11 on the inner flange plate 1 are connected with the negative pressure equipment, and the negative pressure power is provided for the first flow channel and the second flow channel, so that the air suction hole array connected with the flow channel has the negative pressure adsorption effect when the flow channel is unobstructed.

[0060] The width of the first area 31 can be adjusted according to actual conditions to meet production requirements, and the widths of the second area 32 and the third area 33 are adjusted in the same way, so that the paper cutting hub can adapt to at least two sizes of tipping paper, and when the card is changed, the adsorption area on the insert block 3 can be adjusted by only adjusting the fixed position of the outer flange plate 4, and at the same time, the pre-punching part of the tipping paper is in a suspended state.

[0061] In the embodiment of the application, the original insert structure of the paper cutting drum wheel can be cancelled, and the alloy insert block of the paper cutting drum wheel is directly processed to improve the surface hardness and wear resistance, and the cutting of the tipping paper is completed by the shearing movement of the alloy insert block blade edge and the shearing knife edge piece.

[0062] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. In the absence of a contrary indication, the use of an indefinite article, such as "a" or "an", preceding an element, material, or process, is intended to convey that there is one or more of the element, material, or process.

[0063] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific embodiments of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, some simple deductions or substitutions can be made without departing from the concept of the present application, and all of them should be regarded as falling within the protection scope of the present application.

Claims

1. A cutting drum for facilitating card changing, characterized in that, The application relates to a wheel body (2), an insert block (3) and an outer flange (4), a plurality of the insert blocks (3) are positioned and assembled on the roller surface of the wheel body (2), and at least two groups of air suction channels are built in the wheel body (2) corresponding to each insert block (3), one group of air suction channels is used for connecting the air outlet hole of the wheel body (2) with the air inlet hole in the upper part area of the insert block (3), another group of air suction channels comprises a first branch channel extending from the air outlet hole of the wheel body (2) to the abutting end surface of the wheel body (2) and the outer flange (4), and a second branch channel extending from the abutting end surface of the wheel body (2) to the air inlet hole in other areas of the insert block (3) and being connected with the air inlet hole, a curved groove (41) is formed in the outer flange (4), the curved groove (41) is connected with the first branch channel and the second branch channel at the abutting end surface of the wheel body (2) by rotating the outer flange (4), and the second branch channel connects the air inlet hole in other areas of the insert block (3) with the air outlet hole of the wheel body (2).

2. A cutting drum as claimed in claim 1, wherein, An array of air inlet holes is formed in the roller surface of the wheel body (2), an array of air inlet holes corresponding to the array of air inlet holes is formed in the insert block (3), and a plurality of air inlet holes are arranged in the array of air inlet holes; the array of air inlet holes comprises a first area (31), a second area (32) and a third area (33), the first area (31) is located between the second area (32) and the third area (33), one group of air suction channels is connected with the air inlet hole in the first area (31), and another group of air suction channels is connected with the air inlet holes in the second area (32) and the third area (33).

3. A cutting drum as claimed in claim 2, wherein, When the first branch channel and the second branch channel of the another group of air suction channels are connected, the air inlet holes in the second area (32) and the third area (33) adsorb tipping paper; when the first branch channel and the second branch channel are cut off, the air inlet holes in the second area (32) and the third area (33) do not adsorb tipping paper; the air inlet holes on both sides of the second area (32) and the third area (33) are blocked, the lowermost row of air inlet holes in the array of air inlet holes is blocked, and the part of the tipping paper pre-punched is suspended above the wheel body (2).

4. A cutting drum as claimed in claim 1, wherein, An air vent group (21) corresponding to each insert block (3) is formed in the abutting end surface of the wheel body (2), a plurality of air vent groups (21) are annularly distributed on the abutting end surface, the air vent group (21) comprises an air guide hole (211) and an air guide hole (212), the air guide hole (211) is the air inlet hole of the first branch channel, and the air guide hole (212) is the air outlet hole of the second branch channel.

5. A cutting drum as claimed in claim 4, wherein, The outer flange (4) is provided with a non-penetrating curved groove (41) corresponding to each air vent group (21), and a plurality of curved grooves (41) are annularly distributed on the back side of the outer flange (4); the groove width of the curved groove (41) is at least consistent with the hole diameter of the air guide hole (211) and the air guide hole (212), and the groove length of the curved groove (41) is at least consistent with the spacing between the air guide hole (211) and the air guide hole (212).

6. A cutting drum as claimed in claim 4, wherein, The wheel body (2) is provided with a group of air outlet holes (23) corresponding to each of the inserts (3), the group of air outlet holes (23) includes a first suction hole (231), a second suction hole (232), and a third suction hole (233), the first suction hole (231) and the second suction hole (232) are air outlet holes of one of the groups of air suction channels; the third suction hole (233) is an air outlet hole of the first branch channel.

7. A cutting drum as claimed in claim 6, wherein, A plurality of the groups of air outlet holes (23) on the wheel body (2) are located on a negative pressure end surface of the wheel body (2), the negative pressure end surface is opposite to the butt joint end surface, an inner flange plate (1) is arranged on the negative pressure end surface, a plurality of inner hole groups (11) corresponding to the plurality of groups of air outlet holes (23) are arranged on the inner flange plate (1), the inner hole groups (11) include a first inner hole (111) corresponding to the first suction hole (231), a second inner hole (112) corresponding to the second suction hole (232), and a third inner hole (113) corresponding to the third suction hole (233); the inner hole groups (11) on the inner flange plate (1) are butt jointed with a negative pressure device.

8. A cutting drum as claimed in claim 4, wherein, The group of ventilation holes (21) is located on the outer ring side of the butt joint end surface, a plurality of positioning holes (22) in a ring shape are arranged on the inner ring side of the butt joint end surface, a plurality of adjustment hole groups (42) in a ring shape are arranged on the outer flange plate (4) corresponding to the positioning holes (22), and the outer flange plate (4) is fixedly assembled on the butt joint end surface of the wheel body (2) through the adjustment hole groups (42) and the positioning holes (22).

9. A cutting drum as claimed in claim 8, wherein, The adjustment hole groups (42) include a first position hole (421) and a second position hole (422), when the outer flange plate (4) is fixed with the wheel body (2) through the first position hole (421) and the positioning hole (22), the curved groove (41) is synchronously communicated with the bleed hole (211) and the guide hole (212), so that the first branch channel is communicated with the second branch channel; when the outer flange plate (4) is fixed with the wheel body (2) through the second position hole (422) and the positioning hole (22), the back side of the outer flange plate (4) synchronously closes the bleed hole (211) and the guide hole (212), so that the communication between the first branch channel and the second branch channel is cut off.

10. A cutting drum for facilitating card changing as claimed in claim 9, wherein, The distribution ring diameters of the plurality of first position holes (421) are the same as the distribution ring diameters of the plurality of second position holes (422), so that after the outer flange plate (4) is coaxially rotated and fixed with the wheel body (2) on the butt joint end surface, the communication state or the cut-off state of the first branch channel and the second branch channel is maintained.

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