An elliptical shaft device for a tipping machine paper feed system

Abstract

This utility model relates to the field of cigarette equipment technology, and more particularly to an elliptical shaft device for a filter tip feeding machine's paper feeding system. The device includes an elliptical shaft, comprising a bushing and a shaft body. The outer wall of the bushing has a groove. The bushings are detachably fitted onto the outer wall of the shaft body in pairs and symmetrically. The bushings are available in various sizes, with each size having different groove positions to accommodate different pre-drilled widths on different brands of tipping paper. This utility model, using the above structure and various bushing sizes and combinations, can meet the needs of different pre-drilled tipping paper spacings by providing a matching slotted elliptical shaft, eliminating the need to replace the entire elliptical shaft and its overall structure due to different pre-drilled spacings in the tipping paper.

Description

Technical Field

[0001] This utility model belongs to the technical field of cigarette equipment, and specifically relates to an elliptical shaft device for the paper feeding system of a filter tip assembly machine. Background Technology

[0002] The paper feeding and gluing system of the filter tip attaching machine in the winding and splicing unit mainly consists of a paper tray conversion and tensioning device, a tipping paper splicing device, a paper feeding roller device, a gluing device, a vibrator mechanism, a post-glue heating device, and a cutting device with a cutting drum and a cutting blade. The function of the gluing and paper feeding system is to continuously supply tipping paper to the machine as needed, while simultaneously applying a layer of glue that meets process requirements evenly to one side of the tipping paper, and then cutting the continuous tipping paper into equal-length sheets.

[0003] The working process of the tipping paper feeding and gluing device is as follows: the feeding roller pulls the tipping paper out of the paper tray frame, the tipping paper passes through the splicing device, passes between the pressure roller and the feeding roller, and is conveyed forward under the combined action of the friction of the pressure roller and the feeding roller to achieve a continuous supply of tipping paper. After the tipping paper falls on the outer surface of the gluing roller of the gluing system and is coated with glue, it passes through the guide roller 100, elliptical shaft 300 and guide roller 200 of the oscillator mechanism and reaches the tipping paper cutting wheel of the cutting system. Under the action of the negative pressure suction force of the cutting wheel, the tipping paper is adsorbed and sent into the cutting system. The cutting knife cuts the tipping paper at equal intervals and then transfers it to the next process.

[0004] See Figure 1 The existing oscillator mechanism includes a paper guide roller 100, an elliptical shaft 300, a paper guide roller 200, a paper guide roller bracket 400, and a positioning bracket 500. The paper guide rollers 100 and 200 are both mounted on the paper guide roller bracket, and the elliptical shaft 300 is also mounted on the paper guide roller bracket 400 via the positioning bracket 500.

[0005] The elliptical shaft of the oscillator mechanism in the shear-type cutting device of the filter tipping machine is an important component in the tipping paper supply process. The function of the elliptical shaft is to use the difference between its major and minor radii to ensure that the tipping paper supply and the cutting wheel can supply paper at the same speed during cutting. After completing one cut and before entering the next cut, the elliptical shaft is used to drag the tipping paper back a certain distance to ensure that the tipping paper is correctly attached to the tobacco pack.

[0006] The gluing device is a crucial step in the cigarette rolling process, specifically the application of glue to the tipping paper. The control roller provides a uniform and stable amount of glue to the gluing roller. The supply of tipping paper and the gluing process are completed simultaneously, therefore the gluing effect directly impacts the quality of the cigarette packaging. The gluing process can be divided into full gluing and intermittent gluing, depending on the product's manufacturing process. The method of full gluing and intermittent gluing is determined by the control roller.

[0007] To effectively reduce the proportion of harmful components in mainstream flue gas and control tar intake, the applied tipping paper perforation technology can be divided into two processes: online perforation and pre-perforation. Pre-perforation involves punching holes in the tipping paper beforehand, while laser perforation uses laser technology for precise online perforation. Laser perforation uses a full-coating method, eliminating the need for intermittent coating. However, using pre-perforated tipping paper requires the use of intermittent coating rollers to reduce glue overflow from the holes after coating and contamination of the contact points during tipping paper transport. However, due to the processing structure of the intermittent coating rollers, some glue overflow still contaminates the guide rollers and elliptical shaft of the oscillator mechanism. During equipment operation, glue accumulates and thickens, causing the tipping paper to break and producing a large number of defective products. Through improvements by technicians, the elliptical shaft and guide roller corresponding to the perforation points were grooved, significantly alleviating the quality problems.

[0008] However, because the pre-punched width of the tipping paper varies from brand to brand, changing the grade requires replacing the corresponding interval coating roller and oscillator mechanism components. Replacing the interval coating roller and guide roller is relatively simple, as they are easy to disassemble and assemble. However, replacing and installing the oscillator elliptical shaft is more complex, thus taking longer to complete. Utility Model Content

[0009] This invention addresses the shortcomings of existing technologies by developing an elliptical shaft device for the paper feeding system of a filter tipping machine. This invention enables the use of various specifications of bushings and different combination methods to meet the needs of slotted elliptical shafts for pre-drilled tipping paper with different spacings, eliminating the need to replace the entire elliptical shaft and its overall structure due to different pre-drilling spacings of tipping paper.

[0010] The technical solution to the technical problem solved by this utility model is as follows:

[0011] This application provides an elliptical shaft device for a paper feeding system of a filter tip dispenser, comprising an elliptical shaft, wherein the elliptical shaft includes a bushing and a shaft body, and the outer wall of the bushing has a groove.

[0012] The bushings are detachably fitted onto the outer wall of the shaft in a paired and symmetrical manner. The bushings are available in various specifications, with different groove positions for each specification to accommodate different pre-drilled hole widths on different brands of tipping paper.

[0013] As an improvement to the above solution, the bushing is designed to be elliptical, and each end of the bushing has a step with a depth equidistant from the circumference of the elliptical outline.

[0014] As an improvement to the above solution, the distance between the groove and one end of the bushing is greater than the distance between the groove and the other end of the bushing;

[0015] The end face of the groove that is closer to one end of the bushing is the short side face, and the end face of the groove that is farther from one end of the bushing is the long side face. The two bushings are fitted onto the shaft body by means of either the short side face or the long side face.

[0016] As an improvement to the above solution, the total length of the bushing is 48mm, and the groove edge distance of the bushing is 22mm or 19mm.

[0017] As an improvement to the above solution, a paper guide roller bracket is also included. One side of the paper guide roller bracket is connected to a paper guide roller, and two paper guide rollers are provided. The other side of the paper guide roller bracket is connected to a positioning bracket. One end of the shaft is sleeved in the positioning bracket through a bearing. The paper guide roller has a groove that corresponds to the position of the groove on the elliptical axis.

[0018] As an improvement to the above solution, the elliptical shaft further includes a first circular hole, a first flat key, a first keyway, a retaining ring, a first threaded hole, and a first screw. The shaft body is provided with a shoulder. One end of the bushing has a first circular hole. The bushing is sleeved on the outside of the shaft body through the first circular hole. There are two bushings. The first flat key is symmetrically installed on the outside of the shaft body. The inner wall of the first circular hole has a first keyway. The first flat key and the first keyway are inserted into each other. One end of the shaft body has a first threaded hole. One end of the shaft body has a first screw. The first screw is threadedly connected to the first threaded hole through the retaining ring.

[0019] As an improvement to the above solution, a through hole is provided on one side of the paper guide roller bracket, and the positioning bracket is inserted into the through hole. Mounting holes are symmetrically provided on one side of the paper guide roller bracket, and two fixing bolts are provided on one side of the paper guide roller bracket. The fixing bolts are threadedly connected to the positioning bracket through the mounting holes.

[0020] As an improvement to the above solution, a synchronous pulley is installed on the outer side of the shaft. A second circular hole is opened at one end of the synchronous pulley. The synchronous pulley is sleeved on the outer side of the shaft through the second circular hole. A second flat key is installed on the outer side of the shaft. A second keyway is opened on the inner wall of the second circular hole. The second flat key and the second keyway are inserted into each other.

[0021] As an improvement to the above solution, a second threaded hole is provided at the end of the shaft away from the bushing, and a second screw is provided at the end of the shaft away from the bushing. The second screw is threadedly connected to the second threaded hole through a washer.

[0022] Compared with existing technologies, the above solution has the following advantages or beneficial effects:

[0023] This utility model is equipped with bushings of various specifications, and through different combinations of two bushings with symmetrical short-side or long-side contact, it can meet the needs of slotted elliptical shafts for pre-drilled tipping paper with various spacings. It eliminates the need to replace the elliptical shaft and its overall structure due to different pre-drilling spacings of tipping paper, so as to realize the corresponding matching elliptical shafts for pre-drilled tipping paper with different spacings under different brands, and achieve the effect of quick disassembly and quick replacement. Attached Figure Description

[0024] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0025] Figure 1 This is a schematic diagram of the structure of an oscillator mechanism in the prior art.

[0026] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 3 This is a three-dimensional structural diagram of the other side of this utility model;

[0028] Figure 4 This is an exploded three-dimensional structural diagram of the present invention;

[0029] Figure 5 This is a schematic diagram of the exploded three-dimensional structure of the elliptical axis of this utility model.

[0030] Figure 6 This is a schematic diagram of the elliptical shaft of the M-type bushing of this utility model.

[0031] Figure 7 This is a schematic diagram of the elliptical shaft of the N-type bushing of this utility model.

[0032] In the diagram, 100-200 is the guide roller; 300 is the elliptical shaft; 400 is the guide roller bracket; 500 is the positioning bracket; 1 is the guide roller bracket; 2 is the guide roller; 6 is the elliptical shaft; 61 is the bushing; 611 is the step; 62 is the shaft body; 63 is the first round hole; 64 is the first flat key; 65 is the first keyway; 66 is the retaining ring; 67 is the first threaded hole; 68 is the first screw; 69 is the shaft shoulder; 7 is the groove; 8 is the positioning bracket; 9 is the through hole; 10 is the synchronous pulley; 11 is the second round hole; 12 is the washer; 13 is the second screw; 14 is the second threaded hole; 15 is the mounting hole; 16 is the fixing bolt; 17 is the second flat key; and 18 is the second keyway. Detailed Implementation

[0033] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different examples. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present invention omits descriptions of well-known components and processing techniques and processes to avoid unnecessarily limiting the present invention. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] Example 1

[0035] refer to Figures 2 to 5 The elliptical shaft device for the paper feeding system of a filter nozzle assembly machine described in this embodiment includes a paper guide roller bracket 1, a paper guide roller 2 connected to one side of the paper guide roller bracket 1, two paper guide rollers 2 are provided, and a positioning bracket 8 is connected to the other side of the paper guide roller bracket 1, and an elliptical shaft 6 is installed inside the positioning bracket 8.

[0036] The elliptical shaft 6 includes a bushing 61, a shaft body 62, a first circular hole 63, a first flat key 64, a first keyway 65, a retaining ring 66, a first threaded hole 67, and a first screw 68. The shaft body 62 is fitted into the positioning bracket 8 via a bearing. The shaft body 62 has a shoulder 69. One end of the bushing 61 has a first circular hole 63, and the bushing 61 is fitted onto the outside of the shaft body 62 through the first circular hole 63. There are two bushings 61. The first flat key 64 is symmetrically installed on the outside of the shaft body 62. The inner wall of the first circular hole 63 has a first keyway 65, and the first flat key 64 and the first keyway 65 are inserted into each other. One end of the shaft body 62 has a first threaded hole 67, and one end of the shaft body 62 has a first screw 68, which is threadedly connected to the first threaded hole 67 via the retaining ring 66. First, two bushings 61 are respectively fitted onto the shaft body 62 through the first round hole 63. Align the first keyway 65 on the inner wall of the bushing 61 with the first flat key 64 on the shaft body 62, and push them in axially until the bushing 61 is fully in place. Circumferential positioning is achieved by the insertion of the first flat key 64 and the first keyway 65. Next, a retaining ring 66 is installed at one end of the shaft body 62. Align the first screw 68 with the first threaded hole 67 of the shaft body 62, and rotate the first screw 68 to make it securely connected to the first threaded hole 67. The axial displacement of the bushing 61 is restricted by the retaining ring 66 and the shaft shoulder 69 to ensure that the two bushings 61 are fixed in position on the shaft body 62.

[0037] refer to Figure 2 The outer wall of the bushing 61 has a groove 7, which is annular. The bushing 61 has grooves 7 that are equidistant from each other in the circumference of the ellipse. The depth of the grooves 7 is sufficient to accommodate the amount of glue that accumulates after the pre-drilled tipping paper has overflowed, thus preventing damage to the tipping paper. Specifically, the grooves 7 are 1mm deep and 5mm wide.

[0038] Each end of the bushing 61 has a step 611 at a depth equidistant from the circumference of the elliptical outline. Specifically, the depth of the steps 611 at both ends of the bushing 61 is 1mm, and the widths are 1mm and 2mm respectively. The difference in the width of the steps 611 facilitates the differentiation of the two end faces of the bushing 61 during installation. Another function of the steps 611 is that after the end faces of the two bushings 61 are combined, the connection point forms a groove, avoiding the risk of damaging the cork paper due to protrusions at the connection point of the two mating surfaces.

[0039] refer to Figure 4 The bushing 61 is designed to be elliptical. There are two specifications for bushing 61, namely type M and type N. The total length of both type M bushing 61 and type N bushing 61 is 48mm. The total length of two bushings 61 of the same specification is designed to be 96mm after combination, which is to match the length of one side of the conventional elliptical shaft 6 and bushing 61. The difference between type M bushing 61 and type N bushing 61 is that the groove edge distance of type M bushing 61 (the distance from one end face of bushing 61 to the side of the groove 7 closest to it) is 19mm, and the groove edge distance of type N bushing 61 is 22mm.

[0040] The end face of the groove 7 that is closer to one end of the bushing 61 is the short side face, and the end face of the groove 7 that is farther from one end of the bushing 61 is the long side face. The two bushings 7 are fitted onto the shaft 62 in a symmetrical manner with their short side faces or their long side faces in a symmetrical manner.

[0041] For reference during use. Figure 6 After the M-type bushings 61 are symmetrically assembled, the combined elliptical shaft 6 has the following applicable range: Since the hole spacing of the pre-drilled tipping paper used in practice should be less than the width of the groove 7, the applicable range should be the limit width of the two grooves after assembly plus or minus 2mm, such as 38mm+2mm to 48mm-2mm; 48mm+2mm to 58mm-2mm. After the short sides are bonded, i.e., the AA assembly, it can be used for pre-drilled tipping paper with a hole spacing of 40-46mm; after the long sides are bonded, i.e., the BB assembly, it can be used for pre-drilled tipping paper with a hole spacing of 50-56mm. Therefore, after the M-type bushings 61 are assembled, the combined elliptical shaft 6 can be used for pre-drilled tipping paper with a hole spacing of 40-56mm.

[0042] For reference during use. Figure 7 When the N-type bushing 61 is symmetrically assembled, the applicable range of the combined elliptical shaft 6 is as follows: Since the hole spacing of the pre-drilled tipping paper used in actual applications should be less than the slot width, the applicable range of the N-type bushing 61 should be the limit width of the two slots after assembly plus or minus 2mm, such as 32mm+2mm to 42mm-2mm; 54mm+2mm to 64mm-2mm. After the short sides are attached, i.e., the AA assembly, it can be used for pre-drilled tipping paper with a hole spacing of 34-40mm; after the long sides are attached, i.e., the BB assembly, it can be used for pre-drilled tipping paper with a hole spacing of 56-62mm.

[0043] refer to Figure 4 A through hole 9 is provided on one side of the paper guide roller bracket 1. The positioning bracket 8 is inserted into the through hole 9. Mounting holes 15 are symmetrically provided on one side of the paper guide roller bracket 1. There are two fixing bolts 16 on one side of the paper guide roller bracket 1. The fixing bolts 16 are threaded to the positioning bracket 8 through the mounting holes 15. Align the positioning bracket 8 with the through hole 9 on one side of the paper guide roller bracket 1 and insert it smoothly along the axial direction to ensure that the positioning bracket 8 and the through hole 9 fit tightly. After observing that the mounting hole 15 on the paper guide roller bracket 1 is aligned with the threaded hole of the positioning bracket 8, take the two fixing bolts 16 and pass them through the mounting hole 15 respectively, and screw them into the threaded hole of the positioning bracket 8. Tighten them alternately and evenly to an appropriate torque to ensure that the connection between the two is firm and without loosening.

[0044] refer to Figure 4A timing pulley 10 is installed on the outer side of the shaft 62. A second circular hole 11 is opened at one end of the timing pulley 10. The timing pulley 10 is sleeved on the outer side of the shaft 62 through the second circular hole 11. A second flat key 17 is installed on the outer side of the shaft 62. A second keyway 18 is opened on the inner wall of the second circular hole 11. The second flat key 17 and the second keyway 18 are inserted into each other. The second flat key 17 is inserted into the keyway on the outer side of the shaft 62 to ensure that the second flat key 17 and the second keyway 18 fit tightly. The second circular hole 11 of the timing pulley 10 is aligned with the shaft 62 so that the second keyway 18 and the second flat key 17 are aligned. The timing pulley 10 is pushed into the shaft 62 axially until the timing pulley 10 is fully in place, realizing the tight insertion of the second flat key 17 and the second keyway 18, ensuring that the timing pulley 10 and the shaft 62 are circumferentially fixed, and the installation is completed.

[0045] refer to Figure 4 A second threaded hole is provided at the end of the shaft 62 away from the bushing 61. A second screw 13 is provided at the end of the shaft 62 away from the bushing 61. The second screw 13 is threadedly connected to the second threaded hole through a washer 12. The washer 12 is placed on the end of the shaft 62 away from the bushing 61, aligned with the second threaded hole 14, and the second screw 13 is screwed into the second threaded hole 14. It is tightened until the washer 12 is tightly fitted to the end face of the shaft 62, ensuring that the second screw 13 and the second threaded hole 14 are firmly connected, thus completing the axial positioning.

[0046] Operating principle and advantages: First, two bushings 61 are respectively fitted onto both ends of the shaft body 62 through the first circular holes 63. The first keyway 65 on the inner wall of the bushing 61 is aligned with the first flat key 64 on the shaft body 62, and pushed axially until the bushing 61 is fully in place. Circumferential positioning is achieved through the insertion of the first flat key 64 and the first keyway 65. Next, a retaining ring 66 is installed at one end of the shaft body 62. The first screw 68 is aligned with the first threaded hole 67 of the shaft body 62, and the first screw 68 is rotated to secure it to the first threaded hole 67. The retaining ring 66 restricts the axial displacement of the bushings 61, ensuring that the two bushings 61 are fixed in position on the shaft body 62. Finally, the positioning bracket 8 is aligned... Insert the through hole 9 on one side of the paper guide roller bracket 1 smoothly along the axial direction, ensuring that the positioning bracket 8 and the through hole 9 fit tightly. After observing that the mounting hole 15 on the paper guide roller bracket 1 is aligned with the threaded hole of the positioning bracket 8, take two fixing bolts 16 and pass them through the mounting hole 15 respectively, and screw them into the threaded hole of the positioning bracket 8. Tighten them alternately and evenly to an appropriate torque to ensure that the two are firmly connected and without looseness. Finally, put the washer 12 on the end of the shaft 62 away from the bushing 61, align it with the second threaded hole 14, and screw the second screw 13 into the second threaded hole 14. Tighten it until the washer 12 fits tightly against the end face of the shaft 62, ensuring that the second screw 13 and the second threaded hole 14 are firmly connected, and the axial positioning is completed.

[0047] This utility model, by designing bushings 61 of different specifications and different combinations of two bushings 61, can meet the needs of slotted elliptical shafts 6 for pre-drilled tipping paper with various spacings. It eliminates the need to replace the elliptical shaft 6 and its overall structure due to different pre-drilling spacings of tipping paper, so as to realize the corresponding matching elliptical shafts 6 required for pre-drilled tipping paper with different spacings under different brands, and achieve the effect of quick disassembly and quick replacement.

[0048] Example 2

[0049] The content of this embodiment is basically the same as that of Embodiment 1 above, except that:

[0050] The guide roller 2 also has a groove 7, which is annular. The groove 7 of the guide roller 2 corresponds to the groove on the elliptical shaft 6, allowing the guide roller 2 and the elliptical shaft 6 to cooperate in supplying the glued tipping paper. The groove 7 of the guide roller 2 is 1mm deep and 5mm wide. The guide roller 2 is available in various specifications, with different groove positions, to accommodate different sizes of elliptical shaft 6, thus adapting to different pre-punching widths on different brands of tipping paper. Because the guide roller 2 is relatively easy to assemble and disassemble, it is used in practice to replace guide rollers of different specifications by disassembling and assembling the entire roller.

[0051] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. An elliptical shaft device for a paper feeding system of a filter tip dispenser, comprising an elliptical shaft (6), characterized in that: The elliptical shaft (6) includes a bushing (61) and a shaft body (62); the outer wall of the bushing (61) is provided with a groove (7), and the bushing (61) is detachably fitted on the outer wall of the shaft body (62) in a paired and symmetrical manner. The bushing (61) is provided with a variety of specifications, and each specification of bushing (61) is adapted to different pre-punched widths on different brands of cork paper by the different positions of the groove (7).

2. The elliptical shaft device for a paper feeding system of a filter tip dispenser according to claim 1, characterized in that: The bushing (61) is elliptical, and each end of the bushing (61) has a step (611) at a depth equidistant from the circumference of the elliptical outline.

3. The elliptical shaft device for a paper feeding system of a filter tip dispenser according to claim 1, characterized in that: The distance between the groove (7) and one end of the bushing (61) is greater than the distance between the groove (7) and the other end of the bushing (61); The end face of the groove (7) that is closer to one end of the bushing (61) is the short side face, and the end face of the groove (7) that is farther from one end of the bushing (61) is the long side face. The two bushings (61) are fitted onto the shaft (62) by means of short side face contact or long side face contact.

4. An elliptical shaft device for a paper feeding system of a filter tip dispenser according to claim 3, characterized in that: The total length of the bushing (61) is 48mm, the groove edge distance of the bushing (61) is 22mm or 19mm, and the groove width of the groove (7) is 5mm.

5. An elliptical shaft device for a paper feeding system of a filter tip dispenser according to claim 1, characterized in that: It also includes a paper guide roller bracket (1), one side of which is connected to a positioning bracket (8), and one end of the shaft (62) is sleeved in the positioning bracket (8) through a bearing.

6. An elliptical shaft device for a paper feeding system of a filter tip dispenser according to claim 1, characterized in that: The elliptical shaft (6) further includes a first circular hole (63), a first flat key (64), a first keyway (65), a retaining ring (66), a first threaded hole (67), and a first screw (68). The shaft body (62) is provided with a shoulder (69). One end of the bushing (61) is provided with a first circular hole (63). The bushing (61) is sleeved on the outside of the shaft body (62) through the first circular hole (63). There are two bushings (61). The first flat key (64) is symmetrically installed on the outside of the shaft body (62). The inner wall of the first circular hole (63) is provided with a first keyway (65). The first flat key (64) and the first keyway (65) are inserted into each other. One end of the shaft body (62) is provided with a first threaded hole (67). One end of the shaft body (62) is provided with a first screw (68). The first screw (68) is threadedly connected to the first threaded hole (67) through the retaining ring (66).

7. An elliptical shaft device for a paper feeding system of a filter tip dispenser according to claim 5, characterized in that: The paper guide roller bracket (1) has a through hole (9) on one side, and the positioning bracket (8) is inserted into the through hole (9). The paper guide roller bracket (1) has symmetrical mounting holes (15) on one side, and the paper guide roller bracket (1) has a fixing bolt (16) on one side. There are two fixing bolts (16), and the fixing bolts (16) are threadedly connected to the positioning bracket (8) through the mounting holes (15).

8. An elliptical shaft device for a paper feeding system of a filter tip dispenser according to claim 1, characterized in that: A timing pulley (10) is installed on the outside of the shaft (62). A second circular hole (11) is opened at one end of the timing pulley (10). The timing pulley (10) is sleeved on the outside of the shaft (62) through the second circular hole (11). A second flat key (17) is installed on the outside of the shaft (62). A second keyway (18) is opened on the inner wall of the second circular hole (11). The second flat key (17) and the second keyway (18) are inserted into each other.

9. An elliptical shaft device for a paper feeding system of a filter tip dispenser according to claim 1, characterized in that: The shaft (62) has a second threaded hole (14) at one end away from the bushing (61), and a second screw (13) is provided at the other end of the shaft (62) away from the bushing (61). The second screw (13) is threadedly connected to the second threaded hole (14) through a washer (12).

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