Vacuum transfer roll

Abstract

Vacuum transfer roller relates to papermaking utensil technical field, including center connecting rod, the center connecting rod is coaxially rotatable sleeve and has roller shell on it, the circumferential wall of roller shell is uniformly distributed with several suction holes which are communicated with its inner cavity, the area of center connecting rod inside roller shell is fixed with two vacuum isolation plates along the circumference, two vacuum isolation plates are arranged in V shape along the axial section, the other end of two vacuum isolation plates is in frictional abutment with the inner wall of roller shell, the suction hole on roller shell is separated from the inner cavity of roller shell when it rotates to the area where two vacuum isolation plates are located. The utility model solves the problem that the vacuum transfer roller in traditional technology is not entirely wrapped during the transfer of paper, and there is a certain range of leakage part, which causes high energy consumption of the equipment and increases the production cost; and the problem that the vacuum transfer roller is easy to cause paper bubble during long time operation due to vacuum change in the leakage part.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, specifically to vacuum transfer rollers. Background Technology

[0002] Rewinders are a common piece of equipment in the paper roll processing process. When the rewinder is working, it uses vacuum rollers to roll up the processed paper according to requirements, making it easier to package and transport. The smoothness of the operation and the adsorption capacity of the vacuum rollers play a crucial role.

[0003] A prior art patent, CN208932713U, discloses a scheme comprising a mandrel with flanges connected to its left and right ends via bearings. A roller is detachably connected to the middle of the two flanges. The roller has several concentric suction holes, and several seals are positioned between the roller and the mandrel. Several rows of sealing grooves are equidistantly arranged along the axial direction of the mandrel, with the seals housed within these grooves. Several equidistant suction holes are positioned between adjacent rows of sealing grooves on the mandrel, and an air extraction channel is located at the middle of the axial direction of the mandrel. The sealing blocks maintain tight contact with the shaft, ensuring good sealing performance, increasing the negative pressure value, and thus improving the suction capacity. This avoids the problems of excessive gaps between the sealing blocks and the shaft and severe overheating caused by wear after long-term use, ensuring stable operation of the roller even at high speeds.

[0004] The shortcomings of existing technology have gradually become apparent with use, mainly in the following aspects:

[0005] First, the vacuum transfer roller does not completely wrap the paper during the transfer process, and there is a certain degree of leakage, which results in higher energy consumption of the equipment and increases production costs.

[0006] Secondly, during long-term operation, vacuum transfer rollers are prone to vacuum changes in leaking areas, causing paper bubbling.

[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a vacuum transfer roller, which solves the problem that traditional vacuum transfer rollers do not completely wrap the paper during the transfer process, resulting in a certain range of leakage, leading to high energy consumption and increased production costs; and that vacuum changes in the leakage areas during long-term operation of the vacuum transfer roller can cause paper bubbling.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A vacuum transfer roller includes a central connecting rod on which a roller shell is coaxially rotatably mounted. The roller shell has several suction holes evenly distributed on its circumferential wall, communicating with its inner cavity. Two vacuum isolation plates are circumferentially fixed to the region of the central connecting rod inside the roller shell. The two vacuum isolation plates are V-shaped along their axial cross-section, and their other ends rub against the inner wall of the roller shell. When the suction holes on the roller shell rotate to the region where the two vacuum isolation plates are located, they are separated from the inner cavity of the roller shell.

[0011] The central connecting rod is also driven to rotate circumferentially by an adjustment structure to adjust the circumferential position of the two vacuum isolation plates.

[0012] As an optimized solution, the central connecting rod is fixedly connected with support wheels in parallel along the axial direction, and the support wheels and the vacuum isolation plate are located on both sides of the central connecting rod.

[0013] As an optimized solution, end caps are fixed to both ends of the roller shell, and a central hole is opened on the end cap. The central connecting rod is rotatably installed in the central hole using a bearing assembly.

[0014] As an optimized solution, the two ends of the central connecting rod extend to the outside of the end cap and are rotatably supported on the mounting base.

[0015] As an optimized solution, the adjustment structure includes a fixedly installed adjustment box, a worm gear rotatably installed inside the adjustment box, and one end of the central connecting rod extending into the adjustment box and fixedly connected to a worm wheel that meshes with the worm gear.

[0016] As an optimized solution, a reinforcing frame is fixed to the area between the two vacuum isolation plates.

[0017] As an optimized solution, a reinforcing frame is also fixed between the vacuum isolation plate and the support wheel.

[0018] As an optimized solution, the support wheels are arranged in two rows along the circumference of the central connecting rod, and a reinforcing frame is also fixed between the two rows of support wheels.

[0019] As an optimized solution, the axis of the support wheel is arranged perpendicular to the axis of the central connecting rod.

[0020] As an optimized solution, the shaft at one end of the worm gear extends to the outside of the adjustment box and is connected to a power source.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] By installing a vacuum isolation plate on the central connecting rod, the non-working area of ​​the roller shell is sealed off, thereby improving the vacuum level of the effective working area of ​​the roller, reducing the operating frequency of the blower, improving the vacuum level of the paper peeling area, and solving problems such as bubbling, wrinkling, and limited speed increase.

[0023] Furthermore, an adjustment structure is added to one side of the central connecting rod to adjust the circumferential position of the two vacuum isolation plates, enabling adjustment and matching based on the position of the non-working area. The adjustment structure is a worm gear assembly, which can achieve a self-locking position. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the adjustment structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the vacuum isolation plate of this utility model.

[0028] In the diagram: 1-Roller shell; 2-Central connecting rod; 3-Vacuum isolation plate; 4-Reinforcing rib frame; 5-Support wheel; 6-End cover; 7-Bearing assembly; 8-Mounting base; 9-Adjusting box; 10-Worm gear; 11-Worm wheel. Detailed Implementation

[0029] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0030] like Figures 1 to 3 As shown, the vacuum transfer roller includes a central connecting rod 2, on which a roller shell 1 is coaxially rotatably mounted. The roller shell 1 has several suction holes evenly distributed on its circumferential wall, connecting to its inner cavity. Two vacuum isolation plates 3 are circumferentially fixed to the area inside the roller shell 1 where the central connecting rod 2 is located. The two vacuum isolation plates 3 are arranged in a V-shape along their axial cross-section. The other ends of the two vacuum isolation plates 3 rub against the inner wall of the roller shell 1. When the suction holes on the roller shell 1 rotate to the area where the two vacuum isolation plates 3 are located, they are separated from the inner cavity of the roller shell 1.

[0031] The central connecting rod 2 is also driven to rotate circumferentially by an adjustment structure to adjust the circumferential position of the two vacuum isolation plates 3.

[0032] The central connecting rod 2 is fixedly connected with support wheels 5 in parallel along the axial direction. The support wheels 5 and the vacuum isolation plate 3 are located on both sides of the central connecting rod 2. The function of the support wheels 5 is to support the central connecting rod 2 when it moves along the axial direction during the assembly and disassembly process.

[0033] The roller shell 1 is fixed to both ends with end caps 6, and the end caps 6 have a central hole. The central connecting rod 2 is rotatably installed in the central hole by means of the bearing assembly 7.

[0034] The two ends of the central connecting rod 2 extend to the outside of the end cap 6 and are rotatably supported on the mounting base 8.

[0035] The adjustment structure includes a fixed adjustment box 9, a worm gear 10 rotatably mounted inside the adjustment box 9, and one end of the central connecting rod 2 extending into the adjustment box 9 and fixedly connected to a worm wheel 11 that meshes with the worm gear 10.

[0036] A reinforcing frame 4 is fixedly connected to the area between the two vacuum isolation plates 3.

[0037] A reinforcing frame 4 is also fixed between the vacuum isolation plate 3 and the support wheel 5.

[0038] Two rows of support wheels 5 are arranged side by side along the circumference of the central connecting rod 2, and a reinforcing frame 4 is also fixed between the two rows of support wheels 5.

[0039] The axis of the support wheel 5 is perpendicular to the axis of the central connecting rod 2.

[0040] The shaft at one end of the worm gear 10 extends to the outside of the adjustment box 9 and is connected to a power source, which can be used to drive the worm gear 10 to rotate by a handle or electric motor.

[0041] The working principle of this device is as follows:

[0042] By adding a vacuum isolation plate 3 to the central connecting rod 2, the non-working area of ​​the roller shell 1 is sealed off, thereby improving the vacuum level of the effective working area of ​​the roller, reducing the operating frequency of the blower, improving the vacuum level of the paper peeling area, and solving problems such as bubbling, wrinkling, and limited speed increase.

[0043] Furthermore, an adjustment structure is added to one side of the central connecting rod 2, which can adjust the circumferential position of the two vacuum isolation plates 3 to achieve adjustment and matching according to the position of the non-working area. The self-locking position can be achieved by using the worm gear 10 and worm wheel 11 assembly as the adjustment structure.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A vacuum transfer roller, characterized in that: The system includes a central connecting rod (2), on which a roller shell (1) is coaxially rotatably mounted. The roller shell (1) has several suction holes evenly distributed on its circumferential wall, connecting to its inner cavity. Two vacuum isolation plates (3) are circumferentially fixed to the area inside the roller shell (1) of the central connecting rod (2). The two vacuum isolation plates (3) are arranged in a V-shape along their axial cross-section. The other ends of the two vacuum isolation plates (3) rub against the inner wall of the roller shell (1). When the suction holes on the roller shell (1) rotate to the area where the two vacuum isolation plates (3) are located, they are separated from the inner cavity of the roller shell (1). The central connecting rod (2) is also driven to rotate circumferentially by an adjustment structure to adjust the circumferential position of the two vacuum isolation plates (3).

2. The vacuum transfer roller according to claim 1, characterized in that: The central connecting rod (2) is fixedly connected with a support wheel (5) in parallel along the axial direction. The support wheel (5) and the vacuum isolation plate (3) are located on both sides of the central connecting rod (2).

3. The vacuum transfer roller according to claim 1, characterized in that: The roller shell (1) is fixed to both ends with end caps (6), and the end caps (6) have a central hole. The central connecting rod (2) is rotatably installed in the central hole by means of a bearing assembly (7).

4. The vacuum transfer roller according to claim 3, characterized in that: The two ends of the central connecting rod (2) extend to the outside of the end cap (6) and are rotatably supported on the mounting base (8).

5. The vacuum transfer roller according to claim 2, characterized in that: The adjustment structure includes a fixed adjustment box (9), a worm gear (10) is rotatably installed inside the adjustment box (9), and one end of the central connecting rod (2) extends into the adjustment box (9) and is fixedly connected to a worm wheel (11) that meshes with the worm gear (10).

6. The vacuum transfer roller according to claim 5, characterized in that: A reinforcing frame (4) is fixed to the area between the two vacuum isolation plates (3).

7. The vacuum transfer roller according to claim 6, characterized in that: A reinforcing frame (4) is also fixed between the vacuum isolation plate (3) and the support wheel (5).

8. The vacuum transfer roller according to claim 7, characterized in that: The support wheels (5) are arranged in two rows along the circumference of the central connecting rod (2), and a reinforcing frame (4) is also fixed between the two rows of support wheels (5).

9. The vacuum transfer roller according to claim 8, characterized in that: The axis of the support wheel (5) is perpendicular to the axis of the central connecting rod (2).

10. The vacuum transfer roller according to claim 9, characterized in that: The shaft at one end of the worm (10) extends to the outside of the regulating box (9) and is connected to a power source.

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