Guide wheel for cut tobacco suction belt

Abstract

The utility model provides a cut tobacco suction belt guide wheel, which is arranged on a wall plate of an air suction chamber of a plug assembler and comprises a wheel shaft, a guide rail, a guide rail and a guide rail, the belt wheel is internally provided with a shaft hole, the shaft hole comprises a first hole body and a second hole body which are sequentially arranged in the first direction, the diameter of the second hole body is smaller than that of the first hole body, the shaft hole is arranged on the connecting section in a sleeving mode, and the second hole body is close to the wall plate; the bearing is arranged in the first hole body and comprises an inner ring body and an outer ring body, and the connecting section is sleeved with the inner ring body; the diameter of the second hole body is larger than the inner diameter of the inner ring body and smaller than the outer diameter of the inner ring body. The sealing performance of the bearing of the guide wheel of the cut tobacco suction belt can be improved.

Description

Technical Field

[0001] This utility model relates to the field of ribbon suction technology for winding and splicing machines, and in particular to a ribbon suction guide wheel. Background Technology

[0002] The suction belt guide wheel of the coiling machine consists of a pulley, axle, bearing, and locking nut. The pulley is fitted onto the axle, and the bearing is located between the pulley and the axle. One end of the axle is fixed to the wall panel of the suction chamber by a locking nut threaded to it. When the suction belt rotates at high speed, it rubs against the guide wheel, easily causing wear and breakage. The resulting nylon threads easily become entangled on the axle and accumulate there. This accumulation of nylon threads on the axle can easily compress the bearing's seal, causing deformation and loss of sealing, leading to leakage of the lubricating medium inside the bearing and exacerbating friction between the suction belt and the pulley. Utility Model Content

[0003] The purpose of this invention is to solve the technical problem of poor bearing sealing in a suction ribbon guide wheel. This invention provides a suction ribbon guide wheel that improves the bearing sealing performance.

[0004] To solve the above-mentioned technical problems, the present invention provides a suction ribbon guide wheel, which is disposed on the wall panel of the suction chamber of the receiving machine, and includes:

[0005] The axle includes an installation section and a connecting section arranged sequentially along a first direction, wherein the installation section is detachably connected to the wall panel.

[0006] The pulley has a shaft hole inside, which includes a first hole body and a second hole body arranged sequentially along a first direction. The diameter of the second hole body is smaller than the diameter of the first hole body. The shaft hole is sleeved on the outside of the connecting section, and the second hole body is close to the wall plate.

[0007] The bearing is located in the first bore and includes an inner ring and an outer ring. The inner ring is fitted onto the connecting section. The diameter of the second bore is larger than the inner diameter of the inner ring and smaller than the outer diameter of the inner ring.

[0008] Optionally, it also includes a cover plate. A circular groove is provided on the end face of the pulley away from the wall plate. A plurality of first threaded holes extending in a first direction are provided in the circular groove. The cover plate is provided in the circular groove and has a plurality of first through holes. The position of each first through hole corresponds one-to-one with the position of each first threaded hole. Each first through hole is connected to its corresponding first threaded hole by bolts.

[0009] Optionally, the cover plate has a relief hole at its center, the diameter of which is larger than the outer diameter of the inner ring and smaller than the inner diameter of the outer ring.

[0010] Optionally, it also includes a pressure plate, a second threaded hole on the end face of the axle away from the wall panel, a second through hole on the pressure plate, the second through hole and the second threaded hole being connected by screws, the pressure plate being circular, the pressure plate being located inside the relief hole, the diameter of the pressure plate being larger than the inner diameter of the inner ring body and smaller than the diameter of the relief hole.

[0011] Optionally, a limiting protrusion is provided on the outer circumferential surface of the mounting section. The limiting protrusion surrounds the mounting section circumferentially, and the surface of the limiting protrusion facing the bearing abuts against the end face of the inner ring body.

[0012] Optionally, there are two bearings, both of which are located in the first bore and are arranged sequentially along the first direction.

[0013] Optionally, a resilient retaining ring is provided between the two bearings.

[0014] Optionally, the bearing is a deep groove ball bearing.

[0015] Optionally, the cover is made of polyurethane.

[0016] Optionally, the pressure plate is made of stainless steel.

[0017] Compared with the prior art, this utility model has the following beneficial effects:

[0018] The present invention comprises a first hole and a second hole inside the pulley, with the diameter of the first hole being smaller than that of the second hole, forming a stepped surface between them. This stepped surface forms a partition between the pulley's end face near the wall plate. This partition separates the first hole from the wall plate, preventing the suction cable that falls between the wall plate and the pulley from entering the second hole and thus avoiding contact between the suction cable and the bearing. Furthermore, since the diameter of the second hole is larger than the inner diameter of the bearing's inner ring but smaller than its outer diameter, the partition also blocks the internal space of the bearing, preventing the suction cable from entering the bearing through the shaft hole and contacting the bearing's rolling elements. Attached Figure Description

[0019] Figure 1 An exploded view of a suction ribbon guide wheel provided in an embodiment of the present invention is shown;

[0020] Figure 2 A cross-sectional view of a suction ribbon guide wheel according to an embodiment of the present invention is shown;

[0021] Figure 3 A cross-sectional view of a suction ribbon guide wheel provided in another embodiment of the present invention is shown.

[0022] Figure label:

[0023] 1. Axle, 2. Mounting section, 3. Connecting section, 4. Pulley, 5. Shaft hole, 6. First bore, 7. Second bore, 8. Bearing, 9. Inner ring, 10. Outer ring, 11. Cover plate, 12. Circular groove, 13. First threaded hole, 14. First through hole, 15. Bolt, 16. Relief hole, 17. Pressure plate, 18. Second threaded hole, 19. Second through hole, 20. Screw, 21. Limiting protrusion, 22. Elastic retaining ring, 23. Stepped surface, 24. Partition. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0025] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0026] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0027] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0028] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" 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 embodiment based on the specific circumstances.

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0030] The present invention provides a guide wheel for suction ribbons, such as... Figure 1 and Figure 2 As shown, the guide wheel, located on the wall panel of the suction chamber of the receiving machine, includes an axle 1, a pulley 4, and a bearing 8. The axle 1 includes a pulley along a first direction (…). Figures 1 to 3 As shown in the X direction, the mounting section 2 and the connecting section 3 are arranged sequentially, and the mounting section 2 is detachably connected to the wall panel. The pulley 4 has a shaft hole 5 inside, and the shaft hole 5 includes a first hole body 6 and a second hole body 7 arranged sequentially along the first direction. The diameter of the second hole body 7 is ( Figure 2 and Figure 3 The diameter of the middle dimension L2 is smaller than the diameter of the first hole 6. Figure 2 and Figure 3 As shown in dimension L4), the shaft hole 5 is fitted onto the outside of the connecting section 3, and the second hole 7 is close to the wall plate. The bearing 8 is located inside the first hole 6, and the bearing 8 includes an inner ring 9 and an outer ring 10. The inner ring 9 is fitted onto the connecting section 3; the diameter of the second hole 7 is larger than the inner diameter of the inner ring 9. Figure 2 and Figure 3 The inner dimension L1 is shown, and it is smaller than the outer diameter of the inner ring 9. Figure 2 and Figure 3 (As shown in the medium dimension L3).

[0031] By adopting the above technical solution, a step surface 23 is formed between the first hole 6 and the second hole 7 by setting a first hole 6 and a second hole 7 inside the pulley 4, and making the diameter of the first hole 6 smaller than the diameter of the second hole 7. A partition 24 is formed between the step and the end face of the pulley 4 near the connecting section (e.g., Figure 2 and Figure 3(As shown). The partition 24 separates the first hole 6 from the wall plate, preventing the suction ribbon that falls between the wall plate and the pulley 4 from entering the second hole 7 and avoiding contact between the suction ribbon and the bearing 8. Furthermore, since the diameter of the second hole 7 is larger than the inner diameter of the inner ring 9 of the bearing 8 but smaller than the outer diameter of the inner ring 9, the partition 24 also shields the internal space of the bearing 8. Compared to the prior art, this application can prevent the suction ribbon from entering the bearing 8 through the shaft hole 5 and contacting the rolling elements of the bearing 8, improving the sealing performance of the bearing 8 of the suction ribbon guide wheel.

[0032] Furthermore, the guide wheel for the suction belt also includes a cover plate 11. A circular groove 12 is provided on the end face of the pulley 4 away from the wall panel. Multiple first threaded holes 13 extending in a first direction are provided within the circular groove 12. The cover plate 11 is located within the circular groove 12 and has multiple first through holes 14. The position of each first through hole 14 corresponds one-to-one with the position of each first threaded hole 13. Each first through hole 14 is connected to its corresponding first threaded hole 13 by bolts 15. The cover plate 11 isolates the end face of the pulley 4 away from the wall panel from the outside environment, preventing external dust and foreign objects from entering the first hole 6 and the internal space of the bearing 8, thus improving the sealing performance of the guide wheel.

[0033] Furthermore, the cover plate 11 has a clearance hole 16 at its center, and the diameter of the clearance hole 16 is ( Figure 2 and Figure 3 The inner diameter (L5) is larger than the outer diameter (L3) of the inner ring 9, and smaller than the inner diameter (L5) of the outer ring 10. Figure 2 and Figure 3 (As shown in the middle dimension L7). The diameter of the clearance hole 16 is larger than the outer diameter of the inner ring body 9, so that the cover plate 11 and the inner ring body 9 maintain a certain distance, preventing the cover plate 11 from contacting the inner ring body 9 and generating friction.

[0034] Furthermore, the suction ribbon guide wheel also includes a pressure plate 17. A second threaded hole 18 is provided on the end face of the wheel axle 1 away from the wall panel. A second through hole 19 is provided on the pressure plate 17. The second through hole 19 and the second threaded hole 18 are connected by screws 20. The pressure plate 17 is circular and located within the clearance hole 16. The diameter of the pressure plate 17 (…) Figure 2 and Figure 3 The inner diameter L6 (as shown) is larger than the inner diameter L1 of the inner ring body 9 and smaller than the diameter L5 of the clearance hole 16. The pressure plate 17 is used to prevent the inner ring body 9 from disengaging from the connecting section 3, thereby limiting the position of the bearing 8 on the rotating shaft and improving the structural stability of the guide wheel.

[0035] Furthermore, a limiting protrusion 21 is provided on the outer circumferential surface of the mounting section 2. The limiting protrusion 21 surrounds the mounting section 2 circumferentially, and the surface of the limiting protrusion 21 facing the bearing 8 abuts against the end face of the inner ring body 9. The minimum distance between the limiting protrusion 21 and the pressure plate 17 is equal to the length of the inner ring body 9 along its axial direction. The limiting protrusion 21 and the pressure plate 17 work together to limit the position of the inner ring body 9 on the rotating shaft and prevent the inner ring body 9 from moving axially along the rotating shaft.

[0036] Further, refer to Figure 3 There are two bearings 8, both housed within the first bore 6, and arranged sequentially along the first direction. Specifically, the bearings 8 are deep groove ball bearings, model 62201-2RS. Deep groove ball bearings are characterized by their ability to withstand radial and axial loads; using two deep groove ball bearings here improves the stability of the guide wheel.

[0037] Furthermore, an elastic retaining ring 22 is provided between the two bearings 8. Specifically, the inner diameter of the elastic retaining ring 22 is less than or equal to the inner diameter of the outer ring body 10. The elastic retaining ring 22 is used to separate the outer ring bodies 10 of the two bearings 8, which can prevent the two outer ring bodies 10 from colliding and rubbing against each other, and also prevent the bearings 8 from moving axially, thereby improving the operating stability of the bearings 8.

[0038] Furthermore, the cover plate 11 is made of polyurethane, and the pressure plate 17 is made of stainless steel.

[0039] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A suction ribbon guide wheel, disposed on the wall panel of the suction chamber of a receiving machine, characterized in that, include: The axle includes an installation section and a connecting section arranged sequentially along a first direction, wherein the installation section is detachably connected to the wall panel. The pulley has an internal shaft hole, which includes a first hole and a second hole arranged sequentially along the first direction. The diameter of the second hole is smaller than the diameter of the first hole. The shaft hole is sleeved on the outside of the connecting section, and the second hole is close to the wall panel. A bearing is disposed in the first bore. The bearing includes an inner ring and an outer ring. The inner ring is sleeved on the connecting section. The diameter of the second bore is larger than the inner diameter of the inner ring and smaller than the outer diameter of the inner ring.

2. The suction ribbon guide wheel as described in claim 1, characterized in that, It also includes a cover plate. The end face of the pulley away from the wall panel is provided with a circular groove. The circular groove is provided with a plurality of first threaded holes extending along the first direction. The cover plate is disposed in the circular groove and is provided with a plurality of first through holes. The position of each first through hole corresponds one-to-one with the position of each first threaded hole. Each first through hole is connected to its corresponding first threaded hole by bolts.

3. The suction ribbon guide wheel as described in claim 2, characterized in that, The cover plate has a clearance hole at its center, the diameter of which is larger than the outer diameter of the inner ring body and smaller than the inner diameter of the outer ring body.

4. The suction ribbon guide wheel as described in claim 3, characterized in that, It also includes a pressure plate, a second threaded hole is provided on the end face of the wheel axle away from the wall panel, a second through hole is provided on the pressure plate, the second through hole and the second threaded hole are connected by screws, the pressure plate is circular, the pressure plate is located in the relief hole, the diameter of the pressure plate is greater than the inner diameter of the inner ring body and smaller than the diameter of the relief hole.

5. The suction ribbon guide wheel as described in claim 4, characterized in that, The outer circumferential surface of the mounting section is provided with a limiting protrusion, which surrounds the mounting section circumferentially, and the surface of the limiting protrusion facing the bearing abuts against the end face of the inner ring body.

6. The suction ribbon guide wheel as described in claim 5, characterized in that, The number of bearings is two, both of which are disposed in the first hole and are arranged sequentially along the first direction.

7. The suction ribbon guide wheel as described in claim 6, characterized in that, An elastic retaining ring is provided between the two bearings.

8. The suction ribbon guide wheel as described in claim 6, characterized in that, The bearing is a deep groove ball bearing.

9. The suction ribbon guide wheel as described in claim 6, characterized in that, The cover plate is made of polyurethane.

10. The suction ribbon guide wheel as described in claim 6, characterized in that, The pressure plate is made of stainless steel.

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