Pressing-wheel-free adsorption conveying roller
By designing a pressure roller-free adsorption conveyor roller and utilizing the suction holes on the outer and inner shafts, the problem of pressure rollers forming indentations on paper is solved, achieving high-quality paper conveying and simplified equipment operation.
Patent Information
- Application Number
- CN202520643032.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-04-07
AI Technical Summary
The pressure rollers in the existing technology are prone to forming indentations on the paper, which can cause paper damage, scratches or deformation, affecting product quality. In addition, adjusting the pressure is complicated and costly.
It adopts a pressure-free adsorption conveyor roller, and through the design of an outer and inner suction shaft, it uses suction holes to adsorb and convey paper, avoiding direct contact with the paper surface. The hole diameter distribution design of the outer suction shaft can adapt to different paper widths, realizing pressure-free conveying.
It achieves smooth paper feeding, avoids indentations, damage and scratches, improves product quality, and eliminates the need for adjustments to adapt to different paper widths, reducing equipment debugging and maintenance costs.
Smart Images
Figure CN223866017U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of paper conveying equipment, and in particular to a pressure-free adsorption conveying roller. Background Technology
[0002] In roll paper processing equipment, the requirements for paper conveying are generally high. Existing conveying structures typically employ a combination of pressure rollers and conveyor rollers. However, in this type of conveying structure, the pressure rollers require precise pressure adjustment, making operation complex and inefficient, and resulting in high equipment debugging and maintenance costs. Furthermore, the pressure rollers are in direct contact with the paper surface, easily leaving indentations, especially at high speeds, which can lead to paper damage, scratches, or deformation, affecting product quality.
[0003] Therefore, it is necessary to provide a pressure-free adsorption conveyor roller to solve the above-mentioned technical problems. Utility Model Content
[0004] This invention provides a pressure roller-free adsorption conveyor roller to solve the problem that pressure roller conveyor rollers in the prior art easily form indentations on paper, which can easily lead to paper damage, scratches or deformation, affecting product quality.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a pressure-free adsorption conveying roller, which includes an outer suction shaft and an inner suction shaft. The interiors of the outer suction shaft and the inner suction shaft are both axially connected. An outer shaft suction hole is provided through the circumferential surface of the outer suction shaft, and an inner shaft suction hole is provided through the circumferential surface of the inner suction shaft. The outer suction shaft is rotatably sleeved on the outside of the inner suction shaft, and both ends of the inner suction shaft extend out of the outside of the outer suction shaft for connection with corresponding suction devices.
[0006] Multiple outer shaft suction holes are distributed circumferentially along the outer suction shaft to form annular hole groups. Multiple annular hole groups are arranged axially along the outer suction shaft. An inner shaft suction hole is provided on the inner suction shaft corresponding to each annular hole group. The inner shaft suction hole faces the direction where the paper is located.
[0007] In this invention, the outer shaft suction holes of adjacent annular hole groups are staggered in the axial direction of the suction outer shaft.
[0008] In this invention, the circumferential surface of the suction outer shaft is provided with multiple mounting areas along the axial direction, and the diameter of the suction hole of the outer shaft in the middle mounting area is larger than the diameter of the suction hole of the outer shaft in the mounting areas at both ends.
[0009] The plurality of setting areas include a central setting area located in the middle of the outer shaft of the suction shaft, a first end setting area located at both ends of the central setting area, and a second end setting area located at the end of the first end setting area away from the central setting area;
[0010] The axial length of the middle setting area is 3.5-4.5 times the axial length of the first end setting area, and the axial length of the first end setting area is 1.1-1.4 times the axial length of the second end setting area.
[0011] Furthermore, the diameter of the outer shaft suction hole in the middle setting area is 1.45-1.75 times the diameter of the outer shaft suction hole in the first end setting area, and the diameter of the outer shaft suction hole in the first end setting area is 2.5-2.8 times the diameter of the outer shaft suction hole in the second end setting area.
[0012] Specifically, the length of the suction outer shaft is 1.4m-1.7m, the axial length of the middle setting area is 0.6m, the axial length of the first end setting area is 0.15m, and the axial length of the first end setting area is 0.12m.
[0013] The diameter of the external shaft suction hole in the middle setting area is 8mm, the diameter of the external shaft suction hole in the first end setting area is 5mm, and the diameter of the external shaft suction hole in the second end setting area is 3mm.
[0014] In this invention, the outer circumferential surface of the suction inner shaft and the inner circumferential surface of the suction outer shaft are 0.05mm-0.07mm apart.
[0015] In this invention, the inner shaft suction hole is an elongated hole, and the radial length direction of the inner shaft suction hole is along the circumferential direction of the inner suction shaft.
[0016] In this utility model, the two ends of the suction inner shaft are rotatably connected to the inner wall of the suction outer shaft through bearings. Two bearings are arranged side by side at each end of the suction inner shaft, and each bearing is provided with a bearing seal ring.
[0017] In this invention, the suction inner shaft includes a main steel body and an anti-wear sealing layer wrapped around the circumferential surface of the main body.
[0018] Compared with the prior art, the advantages of this utility model are as follows: The suction conveyor roller of this utility model is made by rotating the outer suction shaft around the outer suction shaft and connecting it to the suction device. The outer suction shaft can rotate to convey paper, and the suction holes on the outer shaft can suck up the paper. There is no need to set pressure rollers on the surface of the paper. When the suction holes on the outer shaft rotate away from the position of the suction holes on the inner shaft, the suction force gradually decreases, which facilitates the smooth conveying of paper and makes it less likely to form indentations on the paper. It will not cause paper damage, scratches or deformation, resulting in high product quality.
[0019] In addition, the outer shaft suction holes with different diameters are set in different areas on the circumferential surface of the suction outer shaft, which can be compatible with the conveying of paper of different widths. There is no need to adjust the suction outer shaft and the suction inner shaft, which is adjustment-free. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of this utility model.
[0021] Figure 1 This is a schematic diagram of a preferred embodiment of the pressure-free adsorption conveying roller of this utility model.
[0022] Figure 2 This is a schematic diagram of the suction outer shaft of the pressure-free adsorption conveying roller of this utility model.
[0023] Figure 3 This is a cross-sectional view of the suction outer shaft of the pressure-free adsorption conveying roller of this utility model.
[0024] Figure 4 This is a schematic diagram of the suction inner shaft of the pressure-free adsorption conveying roller of this utility model.
[0025] Figure 5 This is a cross-sectional view of the suction inner shaft of the pressure-free adsorption conveying roller of this utility model. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0027] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.
[0028] The terms "first" and "second" in this utility model are used for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as a restriction on the order of events.
[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, a connection can be a detachable connection or a connection of an integral structure; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0030] In existing pressure roller conveying structures, the pressure rollers require precise pressure adjustment, making operation complex and inefficient, and resulting in high equipment debugging and maintenance costs. Furthermore, the pressure rollers are in direct contact with the paper surface, easily leaving indentations, especially at high speeds, which can damage, scratch, or deform the paper, affecting product quality.
[0031] The following is a preferred embodiment of a pressure-free adsorption conveyor roller provided by this utility model, which can solve the above-mentioned technical problems.
[0032] Please refer to Figure 1 , Figure 2 and Figure 3 In the diagram, units with similar structures are represented by the same labels.
[0033] Please refer to Figure 1 This embodiment provides a pressure-free adsorption conveying roller, which includes an outer suction shaft 11 and an inner suction shaft 12. Both the outer and inner suction shafts are axially connected. An outer shaft suction hole 111 is provided through the circumferential surface of the outer suction shaft 11, and an inner shaft suction hole 121 is provided through the circumferential surface of the inner suction shaft 12. The outer suction shaft 11 is rotatably sleeved on the outside of the inner suction shaft 12. The inner suction shaft 12 is fixedly connected to a corresponding conveying frame. The outer suction shaft 11 can rotate to convey paper. Both ends of the inner suction shaft 12 extend beyond the outer suction shaft 11 for connection to a corresponding suction device 14. The inner suction shaft 12 remains fixed relative to the suction device 14.
[0034] It should be noted that before the inner suction shaft 12 is fixed, the direction of the air outlet of the inner shaft suction hole 121 can be adjusted, for example, to achieve upward or downward suction of paper, making the suction and conveying direction more diverse.
[0035] like Figure 1 In the middle, the two ends of the suction inner shaft 12 can be connected to the corresponding suction device 14 using connecting pipes 15.
[0036] Please refer to Figure 2 Multiple outer shaft suction holes 111 are distributed along the circumference of the suction outer shaft 11 to form annular hole groups 112. Multiple annular hole groups 112 are arranged along the axial direction of the suction outer shaft 11. An inner shaft suction hole 121 is provided on the inner shaft 12 corresponding to each annular hole group 112. The inner shaft suction hole 121 faces the direction where the paper is located.
[0037] When one of the outer shaft suction holes 111 on the annular hole group 112 rotates to align with the inner shaft suction hole 121, the outer shaft suction hole 111 can suck up the paper on the surface of the suction outer shaft 11. There is no need to set pressure rollers on the surface of the paper, it is not easy to form indentations on the paper, and it will not cause paper damage, scratches or deformation, resulting in high product quality.
[0038] The pressure-free suction conveyor roller of this embodiment can be used for conveying single sheets of paper or for conveying multiple sheets of paper stacked together. When conveying multiple sheets of paper stacked together, it can pick up the paper tail, preventing the paper being conveyed later from colliding and scratching the paper surface with the paper being conveyed earlier, so as to output high-quality paper without scratches, spots and wheel marks.
[0039] In this embodiment, the outer shaft suction holes 111 of adjacent annular hole groups 112 are staggered in the axial direction of the suction outer shaft 11, so that the distribution of the outer shaft suction holes 111 is more dispersed, the suction force on the paper is more uniform, and the suction effect is better.
[0040] In this embodiment, the circumferential surface of the suction outer shaft 11 is provided with multiple axially distributed areas. The diameter of the suction holes 111 in the middle area is larger than that in the two end areas. This concentrates the main suction force on the suction outer shaft 11 in the middle area, enabling stable suction and conveying of paper of different widths, and providing high compatibility for conveying paper of different widths.
[0041] For example, when the suction outer shaft 11 picks up and transports paper with a small width, even if the suction holes 111 in the two end areas are exposed, the suction power is less lost due to their small diameter. The suction holes 111 in the middle area can still pick up and transport the paper stably with a strong suction power.
[0042] Please refer to Figure 2In this embodiment, the suction outer shaft 11 is provided with three types of setting areas, but the number of setting areas is not limited to this. Specifically, the multiple setting areas in this embodiment include a central setting area A located in the middle of the suction outer shaft 11, a first end setting area B located at both ends of the central setting area A, and a second end setting area C located at the end of the first end setting area B away from the central setting area A.
[0043] The diameter of the external shaft suction hole 111 in the middle setting area A is larger than the diameter of the external shaft suction hole 111 in the first end setting area B, and the diameter of the external shaft suction hole 111 in the first end setting area B is larger than the diameter of the external shaft suction hole 111 in the second end setting area C.
[0044] In this embodiment, the axial length of the central setting area A is 3.5-4.5 times the axial length of the first end setting area B, and the axial length of the first end setting area B is 1.1-1.4 times the axial length of the second end setting area C. The outer shaft suction holes 111 in the central setting area A can effectively suck up papers of different widths, therefore the central setting area A has the largest axial proportion.
[0045] The diameter of the external shaft suction hole 111 in the middle setting area A is 1.45-1.75 times that of the external shaft suction hole 111 in the first end setting area B, and the diameter of the external shaft suction hole 111 in the first end setting area B is 2.5-2.8 times that of the external shaft suction hole 111 in the second end setting area C.
[0046] Specifically, in this embodiment, the length of the suction outer shaft 11 is 1.4m-1.7m, the axial length of the middle setting area A is 0.6m, the axial length of the first end setting area B is 0.15m, and the axial length of the second end setting area C is 0.12m.
[0047] The diameter of the external shaft suction hole 111 in the middle setting area A is 8mm, the diameter of the external shaft suction hole 111 in the first end setting area B is 5mm, and the diameter of the external shaft suction hole 111 in the second end setting area C is 3mm.
[0048] It should be noted that the specific length of the aforementioned suction outer shaft 11, and the specific diameter of the suction holes 111 in the middle setting area A, the first end setting area B, and the second end setting area C are all dimensions of one embodiment and are not intended to limit this utility model. The actual dimensions can be set according to the width of the material and are determined by the variation in the width of the material.
[0049] In this embodiment, the outer circumferential surface of the inner suction shaft 12 and the inner circumferential surface of the outer suction shaft 11 are 0.05mm-0.07mm apart, which ensures good sealing between the inner suction shaft 12 and the outer suction shaft 11 without affecting the relative rotation between them.
[0050] In this embodiment, the inner shaft suction hole 121 is an elongated hole, and the radial length direction of the inner shaft suction hole 121 is along the circumference of the inner suction shaft 12, so that the outer shaft suction hole 111 can be aligned with the inner shaft suction hole 121 within a set length of rotation range, and can pick up paper within a certain time period, resulting in good paper picking and conveying effect.
[0051] In this embodiment, the two ends of the inner suction shaft 12 are rotatably connected to the inner wall of the outer suction shaft 11 through bearings 13. Two bearings 13 are arranged side by side at each end of the inner suction shaft 12, and each bearing 13 is provided with a bearing 13 sealing ring, so as to achieve good sealing effect while realizing relative rotation between the inner suction shaft 12 and the outer suction shaft 11.
[0052] In this embodiment, the suction inner shaft 12 includes a main steel body 123 and an anti-wear sealing layer 122 wrapped around the circumferential surface of the main steel body 123. The anti-wear sealing layer 122 is made of wear-resistant and sealing materials such as Teflon. The anti-wear sealing layer 122 has good wear resistance and good sealing effect.
[0053] The working principle of this invention is as follows: The paper is located on the surface of the suction outer shaft 11, which can rotate to transport the paper. When one of the outer shaft suction holes 111 on the annular hole group 112 rotates to align with the inner shaft suction hole 121, the outer shaft suction hole 111 can suck up the paper on the surface of the suction outer shaft 11. The suction force of the outer shaft suction hole 111 on the paper, combined with the rotation of the suction outer shaft 11, can stably transport the paper. There is no need to install pressure rollers on the surface of the paper, making it less likely to form indentations on the paper, preventing damage, scratches, or deformation, and resulting in high product quality.
[0054] This preferred embodiment of the pressure roller-free adsorption conveyor roller rotates by connecting the outer suction shaft to the outside of the inner suction shaft. Through the connection between the inner suction shaft and the suction device, the outer suction shaft can rotate to convey paper, and the suction holes on the outer shaft can suck up the paper. There is no need to set pressure rollers on the surface of the paper. When the suction holes on the outer shaft rotate away from the position of the suction holes on the inner shaft, the suction force gradually decreases, which facilitates smooth paper conveying, makes it less likely to form indentations on the paper, and will not cause paper damage, scratches or deformation, resulting in high product quality.
[0055] In addition, the suction shaft has suction holes of different diameters in different areas on the circumferential surface of the suction shaft, which can accommodate paper of different widths and does not require adjustment of the suction shaft, thus providing adjustment-free operation.
[0056] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.
Claims
1. A pressure-free adsorption conveying roller, characterized in that, It includes an outer suction shaft and an inner suction shaft, both of which are axially connected. The outer suction shaft has an outer shaft suction hole through its circumferential surface, and the inner suction shaft has an inner shaft suction hole through its circumferential surface. The outer suction shaft is rotatably sleeved on the outside of the inner suction shaft, and both ends of the inner suction shaft extend out of the outer suction shaft for connection with corresponding suction devices. Multiple outer shaft suction holes are distributed circumferentially along the outer suction shaft to form annular hole groups. Multiple annular hole groups are arranged axially along the outer suction shaft. An inner shaft suction hole is provided on the inner suction shaft corresponding to each annular hole group. The inner shaft suction hole faces the direction where the paper is located.
2. The pressure-free adsorption conveying roller according to claim 1, characterized in that, The outer shaft suction holes of adjacent annular hole groups are staggered in the axial direction of the suction outer shaft.
3. The pressure-free adsorption conveyor roller according to claim 1 or 2, characterized in that, The circumferential surface of the suction outer shaft has multiple setting areas distributed along the axial direction. The diameter of the suction hole in the middle setting area is larger than the diameter of the suction hole in the setting areas at both ends.
4. The pressure-free adsorption conveying roller according to claim 3, characterized in that, The plurality of setting areas include a central setting area located in the middle of the outer shaft of the suction shaft, a first end setting area located at both ends of the central setting area, and a second end setting area located at the end of the first end setting area away from the central setting area; The axial length of the middle setting area is 3.5-4.5 times the axial length of the first end setting area, and the axial length of the first end setting area is 1.1-1.4 times the axial length of the second end setting area.
5. The pressure-free adsorption conveying roller according to claim 4, characterized in that, The diameter of the outer shaft suction hole in the middle setting area is 1.45-1.75 times the diameter of the outer shaft suction hole in the first end setting area, and the diameter of the outer shaft suction hole in the first end setting area is 2.5-2.8 times the diameter of the outer shaft suction hole in the second end setting area.
6. The pressure-free adsorption conveyor roller according to claim 5, characterized in that, The length of the suction outer shaft is 1.4m-1.7m, the axial length of the middle setting area is 0.6m, the axial length of the first end setting area is 0.15m, and the axial length of the second end setting area is 0.12m. The diameter of the external shaft suction hole in the middle setting area is 8mm, the diameter of the external shaft suction hole in the first end setting area is 5mm, and the diameter of the external shaft suction hole in the second end setting area is 3mm.
7. The pressure-free adsorption conveyor roller according to claim 1, characterized in that, The distance between the outer circumferential surface of the inner suction shaft and the inner circumferential surface of the outer suction shaft is 0.05mm-0.07mm.
8. The pressure-free adsorption conveying roller according to claim 2, characterized in that, The inner shaft suction hole is an elongated hole, and the radial length direction of the inner shaft suction hole is along the circumference of the inner suction shaft.
9. The pressure-free adsorption conveyor roller according to claim 1, characterized in that, The two ends of the inner suction shaft are rotatably connected to the inner wall of the outer suction shaft through bearings. Two bearings are arranged side by side at each end of the inner suction shaft, and each bearing is provided with a bearing seal ring.
10. The pressure-free adsorption conveying roller according to claim 1, characterized in that, The suction inner shaft includes a main steel body and an anti-wear sealing layer wrapped around the circumferential surface of the main body.