An adjustable arc roller set

Abstract

The invention discloses an adjustable curvature arc roller group, comprising an arc roller, the arc roller comprising a rotating shaft, the rotating shaft being provided with a through groove, the through groove dividing the rotating shaft into an upper half shaft and a lower half shaft, the upper half shaft and the lower half shaft being fixedly connected only at the first end of the rotating shaft, the length of the upper half shaft at the second end of the rotating shaft being longer than the length of the lower half shaft at the second end of the rotating shaft; an adjusting component being located at the side where the second end of the rotating shaft is located, the adjusting component having a movable component, the movable component being adjustable and movable back and forth along the axial direction of the rotating shaft, the movable component being in contact with the end of the upper half shaft at one end facing the upper half shaft, and the end of the lower half shaft being fixed; a metal plate being provided in the through groove, the arc roller of the present application is arc-shaped in the middle, and the curvature of the arc can be adjusted at will, and compared with the traditional arc roller with a fixed curvature, it is easy to open the product when slitting, and it is possible to well control the lateral expansion and contraction of the product with lines while controlling the wrinkling of the paper.

Description

Technical Field

[0001] The invention specifically relates to an arc-shaped roller group with adjustable curvature. Background Art

[0002] The axial curvature radius of the arc roller is equal, and the axial speed of each point on the roller surface is constant. In terms of geometric structure, the arc roller has a concave and convex surface, which is the basis for the paper web to stretch. If the paper web enters the concave surface and enters the convex surface through the roller surface, the paper web will be stretched. The stretching amount of the paper web depends on the paper web tension, wrap angle, bending amount, etc., and the bending amount is one of the important factors that determine the maximum stretching of the paper web through the arc roller surface, because 1. The transverse stretching amount at the center line of the paper web is zero; 2. At the distance X from the center line of the paper web along the arc roller surface, the stretching roller produces a transverse stretching amount of y; 3. At the distance 2X from the center line of the paper web along the arc roller surface, the stretching roller produces a transverse stretching amount of 2y. Proportional transverse stretching can be strengthened by the paper web contacting the roller. Due to the maximum transverse stretching amount at both ends of the paper web, the paper web always contacts the two ends of the roller surface first. Therefore, when the paper web moves from the concave edge to the convex edge, the two ends are stretched first, creating a certain space, and then the transverse amount generated is filled. Due to inherent geometric reasons, the paper web always stretches proportionally, and the stretching does not start from the middle, because no paper web wrinkles are generated during the stretching process of the curved roller.

[0003] The curvature of the existing curved rods is fixed when they leave the factory. In actual use, facing different paper materials, thicknesses and different unfolding requirements, only the curved rods with corresponding curvatures can be customized to meet the use requirements. This first increases the equipment investment cost, and secondly, the curved rods need to be replaced, which increases the workload of workers and prolongs the production cycle. Summary of the invention

[0004] The purpose of the present invention is to provide an arc roller set with adjustable curvature, which is intended to solve the technical problems existing in the background technology.

[0005] To solve the above technical problems, the purpose of the present invention is achieved as follows:

[0006] An adjustable arc roller group, comprising:

[0007] An arc-shaped stick, wherein the arc-shaped stick comprises a rotating shaft, wherein the rotating shaft is provided with a through groove, wherein the through groove divides the rotating shaft into an upper half shaft and a lower half shaft, wherein the upper half shaft and the lower half shaft are fixedly connected only at a first end of the rotating shaft, and a length of the upper half shaft at the second end of the rotating shaft is longer than a length of the lower half shaft at the second end of the rotating shaft;

[0008] An adjustment component is located at the side where the second end of the rotating shaft is located, and the adjustment component has a movable component, and the movable component can be adjusted to move back and forth along the axial direction of the rotating shaft, and one end of the movable component faces the upper half shaft and contacts the end of the upper half shaft, and the end of the lower half shaft is fixed;

[0009] A metal flat plate is arranged in the through groove.

[0010] On the basis of the above solution and as a preferred solution of the above solution: a metal flat plate is provided in the through groove.

[0011] On the basis of the above solution and as a preferred solution of the above solution: there are at least two metal plates.

[0012] On the basis of the above solution and as a preferred solution of the above solution: the metal plate is made of copper.

[0013] On the basis of the above scheme and as a preferred scheme of the above scheme: the adjusting assembly includes an adjusting nut and a movable component, one end of the adjusting nut is sleeved on the outside of the second end of the rotating shaft and is fixedly connected to the end of the lower half shaft, and the movable component is threadedly connected to the end of the adjusting nut away from the rotating shaft.

[0014] On the basis of the above scheme and as a preferred scheme of the above scheme: a clamping head is arranged between the movable component and the upper half shaft end, the clamping head contacts the upper half shaft end with one end facing the upper half shaft end, and a thrust bearing is arranged between the clamping head and the movable component.

[0015] On the basis of the above scheme and as a preferred scheme of the above scheme: a rotating portion is provided at one end of the movable component away from the thrust bearing.

[0016] On the basis of the above scheme and as a preferred scheme of the above scheme: it also includes an angle adjustment component, and the angle adjustment component can drive the rotating shaft to rotate.

[0017] On the basis of the above scheme and as a preferred scheme of the above scheme: the movable end of the angle adjustment component can be transmitted to the adjustment nut.

[0018] On the basis of the above scheme and as a preferred scheme of the above scheme: the arc-shaped roller also includes a roller body assembly, the roller body assembly includes a roller skin, a plurality of bearings arranged side by side on the rotating shaft, and a flexible spacer sleeve arranged between two adjacent bearings; the roller skin sleeve is arranged on the outer ring of the bearing; limit retaining rings are provided at both ends of the roller body assembly, and the limit retaining rings are fixed to the rotating shaft.

[0019] On the basis of the above scheme and as a preferred scheme of the above scheme: it also includes a support component, and the first end of the rotating shaft is movably arranged in the support component.

[0020] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0021] 1. The arc-shaped roller of the present application is arc-shaped in the middle, and the curvature of the arc can be adjusted at will. Compared with the traditional arc-shaped roller with a fixed curvature, it is easy to open the product during slitting, and can well control the lateral expansion and contraction of products with lines while controlling paper wrinkling.

[0022] 2. An angle adjustment component is provided, so that the relative position of the concave edge and the convex edge and the paper can be adjusted, making it easier to adjust the curvature. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a schematic diagram of the structure of the regulating component;

[0025] Figure 3 is a schematic diagram of the rotating shaft structure;

[0026] Figure 4 It is a schematic diagram of the arc stick structure. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of this application clearer, the technical solution in the embodiment will be clearly and completely described below in conjunction with the drawings in the embodiment. Obviously, the described embodiment is only a part of the embodiment of this application, not all embodiments. Based on the given embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0028] In the description of the present application, it should be understood that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 understood as a limitation on the present application.

[0029] In the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0030] Embodiment 1

[0031] An adjustable arc roller group, comprising:

[0032] The arc-shaped stick 200 includes a rotating shaft 210, and the rotating shaft 210 is provided with a through groove 213, and the through groove 213 divides the rotating shaft into an upper half shaft 2121 and a lower half shaft 2122. The upper half shaft 2121 and the lower half shaft 2122 are fixedly connected only at the first end 211 of the rotating shaft, and the length of the upper half shaft 2121 at the second end of the rotating shaft 210 is longer than the length of the lower half shaft 2122 at the second end of the rotating shaft 210; specifically, the rotating shaft The shaft 210 is cut from the second end 212 of the shaft along the axial direction to the first end 211 of the shaft and stops after reaching a set length from the first end 211 of the shaft, thereby cutting out the upper half shaft 2121 and the lower half shaft 2122, while the upper half shaft 2121 and the lower half shaft 2122 are fixedly connected at the first end 211 of the shaft, and the lower half shaft end 2122a is cut off by a set length so that the outermost end of the lower half shaft end 2122a is shorter than the outermost end of the upper half shaft end. Preferably, a shaft sleeve 2123 is sleeved on the outer side of the upper half shaft end and the lower half shaft end 2122a.

[0033] The arc-shaped stick 200 also includes a roller assembly 220, which includes a roller skin 221, a plurality of bearings 222 arranged side by side on the rotating shaft 210, and a flexible spacer 223 arranged between two adjacent bearings 222; the roller skin 221 is sleeved on the outer ring of the bearing 222; both ends of the stick assembly 220 are provided with a limit ring 230, and the limit ring 230 is fixed to the rotating shaft 210. Such a structure can well follow the rotating shaft to realize the corresponding bending of the roller surface of the roller skin 221 during the bending of the rotating shaft 210; preferably, the roller skin 221 is made of rubber. Since the relative distance between the bearings 222 will also change during the bending of the rotating shaft 210, the change in the relative distance between the bearings can be compensated by the flexible spacer 223, so that the relative position between the bearings 222 can be well maintained.

[0034] The adjustment component 400 is located on the side where the second end 212 of the rotating shaft is located. The adjustment component 400 has a movable component 520, which can be adjusted to move back and forth along the axial direction of the rotating shaft 210. One end of the movable component 520 facing the upper half shaft 2121 contacts the end of the upper half shaft, and the end 2122a of the lower half shaft is fixed. It is further preferred that the adjustment assembly 400 includes an adjustment nut 510 and a movable member 520, one end of the adjustment nut 510 is sleeved on the sleeve 2123 outside the second end 212 of the rotating shaft, and a screw 530 passes through the adjustment nut 510 and the sleeve 2123 in sequence and is tightened on the lower half shaft 2122, so that the adjustment nut 510 is fixedly connected to the end 2122a of the lower half shaft; in this embodiment, the adjustment nut 510 is preferably provided with an internal thread at the end away from the rotating shaft 210, and the movable member 520 is preferably provided with an external thread at the end facing the adjustment nut 510, and the movable member 520 is screwed into the internal thread of the adjustment nut 510 to realize the connection between the movable member 520 and the adjustment nut 510, and at the same time, the movable member 520 is rotated in the forward or reverse direction while the movable member 520 is moved linearly back and forth along the axial direction of the adjustment nut 510; since the movable member 520 is in contact with only the end of the upper half shaft 2121, when the movable member 520 is rotated, When the movable member 520 moves it toward the rotating shaft 210, it will squeeze the end of the upper half shaft. The squeezing will inevitably cause the upper half shaft 2121 to bend, but the lower half shaft 2122 is fixed to the adjusting nut 510 by the screw 530. At this time, the upper half shaft 2121 is subjected to compressive stress and the lower half shaft 2122 is subjected to tensile stress, which will cause the upper half shaft 2121 to bend in the direction of the lower half shaft 2122 and drive the lower half shaft 2122 to bend at the same time. The greater the amount of movement of the movable member 520 toward the rotating shaft 210, the greater the pressure applied to the upper half shaft 2121, and the greater the pulling force on the lower half shaft 2122. Thus, the greater the bending deformation of the upper half shaft 2122 and the lower half shaft 2121. Thus, for the rotating shaft 210, the greater the curvature of the entire rotating shaft 210. On the contrary, when the movable member 520 moves away from the rotating shaft 210, the bending deformation of the upper half shaft 2122 and the lower half shaft 2121 will decrease until they return to their initial positions.Furthermore, it also includes a support assembly 300, and the first end 211 of the rotating shaft is movably arranged in the support assembly 300; specifically, the support assembly 300 includes a bearing seat 310 and a spherical roller bearing 320, the bearing seat 310 is fixedly installed on the bracket 100, the spherical roller bearing 320 is fixedly installed in the bearing seat 310 by a bearing limit assembly 330, the first end 211 of the rotating shaft is inserted into the inner ring of the spherical roller bearing 320, and preferably a sleeve 340 is sleeved on the first end 211 of the rotating shaft, the sleeve 340 and the first end 211 of the rotating shaft are driven by a flat key 350, and the sleeve 340 is located between the first end 211 of the rotating shaft and the inner ring of the spherical roller bearing 320, so that when the curvature of the rotating shaft 210 changes , the inner ring of the spherical roller bearing 320 will rotate more along with the movement of the first end 211 of the rotating shaft. In addition, when the curvature of the rotating shaft 210 changes, the maximum straight-line distance between the first end 211 of the rotating shaft and the second end 212 of the rotating shaft will also change. The first end 211 of the rotating shaft of the present application is clearance-matched with the inner ring of the sleeve 340, and the outer ring of the sleeve 340 is in contact with the inner ring of the spherical roller bearing 320. Then, when the maximum straight-line distance between the first end 211 of the rotating shaft and the second end 212 of the rotating shaft changes, the first end 211 of the rotating shaft can axially move in the sleeve 340 to compensate and adapt to the length change, thereby further solving the installation support problem caused by the change in the length of the rotating shaft during the curvature change of the rotating shaft 210. In this embodiment, the movable component 520 is preferably provided with a rotating part at one end away from the thrust bearing 570. Therefore, when the curvature of the rotating shaft needs to be adjusted, the rotating part can be rotated with the help of a tool to drive the movable component 520 to rotate in the forward or reverse direction. Of course, the servo motor in the prior art can also be used to drive the movable component 520 to rotate.

[0035] A tightening head 540 is arranged between the movable component 520 and the end of the upper half shaft. The tightening head 540 contacts the end of the upper half shaft with one end facing the end of the upper half shaft. A thrust bearing 570 is arranged between the tightening head 540 and the movable component 520. The movable component 520 is hollow. The tightening head 540 is fixedly connected to a guide column 580 by a screw 590. The guide column 580 is located in the hollow of the movable component 520, and a bearing 560 is mounted on the outside of the guide column 580. The outer ring of the bearing 560 is installed in the hollow of the movable component 520. After this arrangement, the rotation resistance of the movable component 520 is smaller and the adjustment is more labor-saving.

[0036] More preferably, a metal plate 250 is provided in the through groove 213 of the rotating shaft 210, and the through groove 213 is filled with the metal plate 250 so that the upper and lower shafts can maintain their original shapes. In addition, the upper and lower shafts will also slide relative to each other during the actual bending process, so the addition of the in-and-out plate 250 can also make the relative sliding of the upper and lower shafts during the bending process very smooth. Preferably, the metal plate 250 is formed by stacking at least two pieces. More preferably, the metal plate 250 is made of copper.

[0037] Embodiment 2

[0038] In actual use, in order to achieve a better stretching effect, it is also necessary to adjust the position of the protrusions and concave points of the rotating shaft 210 relative to the paper, so as to achieve the best stretching effect. For this purpose, this embodiment further includes an angle adjustment component 400 on the basis of Example 1, and the angle adjustment component 100 can drive the rotating shaft 210 to rotate. Specifically, the angle adjustment assembly 400 includes a housing 440, a worm 410, a worm wheel 420, a transmission key 430 and an end cover 450. The worm 410 is meshed with the worm wheel 420. The worm wheel 420 is sleeved on the adjusting nut 510 and key slots are provided on the worm wheel 420 and the adjusting nut 510. The transmission key 430 is installed in the key slot. In this way, when the worm 410 is rotated, the worm wheel 420 will also rotate synchronously, and the adjusting nut 510 is driven to rotate through the transmission key 430. Since the adjusting nut 510 is fixedly connected to the lower half shaft 2122 by the screw 530, the rotating shaft 210 will also rotate synchronously when the adjusting nut 510 rotates, thereby achieving adjustment.

[0039] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable arc roller set, characterized in that: include An arc-shaped stick (200), the arc-shaped stick comprising a rotating shaft (210), the rotating shaft (210) being provided with a through groove (213), the through groove (213) dividing the rotating shaft into an upper half shaft (2121) and a lower half shaft (2122), the upper half shaft (2121) and the lower half shaft (2122) being fixedly connected only at the first end (211) of the rotating shaft, the length of the upper half shaft (2121) at the second end of the rotating shaft (210) being longer than the length of the lower half shaft (2122) at the second end of the rotating shaft (210); An adjustment component (400) is located on the side where the second end (212) of the rotating shaft is located. The adjustment component (400) has a movable component (520). The movable component (520) can be adjusted to move back and forth along the axial direction of the rotating shaft (210). One end of the movable component (520) facing the upper semi-shaft (2121) contacts the end (2121a) of the upper semi-shaft, and the end (2122a) of the lower semi-shaft is fixed. A metal flat plate (250) is provided in the through groove (213); The adjustment assembly (400) comprises an adjustment nut (510) and a movable component (520), one end of the adjustment nut (510) is sleeved outside the second end (212) of the rotating shaft and fixedly connected to the lower half shaft end (2122a), and the movable component (520) is threadedly connected to one end of the adjustment nut (510) away from the rotating shaft (210); The invention also comprises an angle adjustment component (100), wherein the angle adjustment component (100) can drive the rotating shaft (210) to rotate, and the movable end of the angle adjustment component (100) can transmit power to the adjusting nut (510). The angle adjustment component (100) comprises a housing (440), a worm (410), a worm wheel (420), a transmission flat key (430) and an end cover (450). The worm (410) is meshed with the worm wheel (420), the worm wheel (420) is sleeved on the adjusting nut (510), and keyways are provided on the worm wheel (420) and the adjusting nut (510), and the transmission flat key (430) is installed in the keyway.

2. The adjustable arc roller assembly according to claim 1, characterized in that: There are at least two metal flat plates (250).

3. The adjustable arc roller assembly according to claim 2, characterized in that: The metal plate (250) is made of copper.

4. An adjustable arc roller assembly according to any one of claims 1 to 3, characterized in that: A tightening head (540) is provided between the movable component (520) and the upper half shaft end (2121a); ​​one end of the tightening head (540) facing the upper half shaft end (2121a) contacts the upper half shaft end (2121a); ​​and a thrust bearing (570) is provided between the tightening head (540) and the movable component (520).

5. The adjustable arc roller assembly according to claim 4, characterized in that: A rotating portion is provided at one end of the movable component (520) away from the thrust bearing (570).

6. An adjustable arc roller assembly according to any one of claims 1 to 3, characterized in that: The arc-shaped roller (200) further comprises a roller assembly (220), wherein the roller assembly (220) comprises a roller skin (221), a plurality of bearings (222) sleeved side by side on the rotating shaft (210), and a flexible spacer (223) arranged between two adjacent bearings (222); the roller skin (221) is sleeved on the outer ring of the bearing (222); and limit retaining rings (230) are arranged at both ends of the roller assembly (220), and the limit retaining rings (230) are fixedly arranged on the rotating shaft (210).

7. The adjustable arc roller assembly according to claim 6, characterized in that: It also includes a support assembly (300), wherein the first end (211) of the rotating shaft is movably disposed in the support assembly (300).

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