Roller for roller press

Abstract

The invention provides a roller for a roller press. The roller comprises: at least one central shaft; the roller surface part surrounds the central shaft in a sleeve manner; the grading supporting assembly is arranged between the roller surface part and the central shaft in the radial direction of the roller and comprises at least one stage, the grading supporting assembly comprises a first stage, the first stage is connected to the roller surface part, the first stage comprises at least one first stage connecting arm, the first stage connecting arm comprises at least two first stage supporting parts, and the first stage supporting parts are connected to the roller surface part; the first-stage supporting part is connected to the roller surface part; and at least one central shaft support portion connected to the central shaft.

Description

Technical Field

[0001] The present invention relates to a roller for a roller press, which is used for compacting materials to control the thickness, density and surface flatness of the material sheet. The present invention belongs to the field of roller pressing devices. Background Art

[0002] The basic functions of a roller press include transmitting power, applying pressure, regulating tension, and performing processes such as coating or forming. With the rapid development of advanced manufacturing, particularly in new energy, new materials, and precision machining, higher requirements are being placed on the performance of roller presses, particularly rollers. The roller's structural design, surface treatment, manufacturing precision, and coordinated control within the system have become key factors influencing product quality and production efficiency.

[0003] In the field of pan-industrial manufacturing, rollers play an irreplaceable role, which is mainly reflected in the following aspects: Coating process: including backsheet coating coating in photovoltaic modules, functional layer transfer printing of high-performance films, and sizing rollers and rubber rollers in the papermaking industry. These applications place specific requirements on the chemical stability, wear resistance and coating adhesion of rollers. Rolling process: In steel and non-ferrous metal processing, support rollers and working rollers jointly complete the thickness compression and surface treatment of the plate. Their force accuracy and thermal deformation control technology are becoming increasingly complex; in plastic sheet forming, calendering rollers need to achieve deformation consistency and surface finish control under high temperature conditions. Conveying and tension control system: widely used in textile production lines and slitting and conveying systems of flexible packaging materials. Guide rollers and tension rollers work together to adjust the material's belt tension to prevent wrinkles, offsets and belt breaks, thereby improving the level of automation and yield rate of production.

[0004] In lithium-ion battery manufacturing, rollers play a particularly crucial role, particularly in the electrode preparation process. Rollers in a roller press are used to precisely compact the positive or negative electrode sheets formed after the coating slurry has dried. This is done to control the thickness, density, and surface flatness of the electrode sheets, parameters that are directly related to the lithium-ion battery's energy density, safety, and subsequent assembly consistency. With the current trend toward higher energy density and smaller batteries, the surface accuracy, pressure uniformity, and long-term stability of the compaction rollers are crucial.

[0005] The roller system in the coating machine, such as the metering roller, coating roller, and back pressure roller, operates synchronously with high precision to uniformly transfer and apply the slurry containing active materials to the metal substrate (such as aluminum foil or copper foil). The coating roller's surface treatment process and axial runout control directly affect the uniformity of the slurry thickness. Any deviation can cause fluctuations in the electrochemical performance of the electrode, reducing the consistency and reliability of the battery.

[0006] Although rollers have been widely used in lithium battery manufacturing and other industrial applications, the existing roller structure and control technology still face many technical bottlenecks, which are mainly reflected in the following aspects.

[0007] Deflection deformation problem. In high-load working conditions such as lithium battery pole piece compaction and metal sheet rolling, rollers with a large aspect ratio are prone to static and dynamic flexural deformation. Taking a typical lithium battery roller press as an example, the length of its roller can reach more than 2 meters. Under the working pressure range of 10 to 200 MPa, even if it is made of high-strength materials, its own structure is difficult to avoid bending deformation due to uneven force. This type of flexural effect will directly cause the contact pressure of the roller surface to be unevenly distributed along the width direction, resulting in a significant thickness difference between the edge and center of the processed material, with a difference of up to 5% to 15%. In addition, with the acceleration of production rhythm and changes in the physical properties of the processed material (such as hardness fluctuations), the deflection deformation of the roller during dynamic operation is even more uncontrollable.

[0008] Thermal deformation and surface wear. In high-speed coating or calendering applications, frequent contact and friction with the material surface and other transmission components can easily cause frictional temperature rise, resulting in localized heat accumulation. If heat is not effectively dissipated, the roller will expand locally, inducing shape changes on the roller surface, affecting coating uniformity or material forming quality.

[0009] To address the aforementioned deflection and thermal deformation issues of rollers during high-precision machining, various structural improvements and control strategies have been proposed in the relevant technical fields in an attempt to improve their overall performance. However, these existing solutions still face a series of technical and engineering limitations in practical applications, mainly manifested as follows:

[0010] 1. Back roller support technology. To reduce the deflection of long rollers under high-pressure loads, some high-end equipment incorporates multi-row back roller support structures. Typical forms include "multi-segment back roller arrays" and "hydraulic floating back roller systems." By transferring and evenly distributing the load on the main roller to multiple support points, this improves the uniformity of force applied to the roller, thereby enhancing stiffness and compaction uniformity.

[0011] However, this type of structure is highly complex, requiring a precisely positioned multi-point support mechanism beneath the main roller. This requires extremely high installation precision (tolerances must be maintained at ±0.05mm). Even the slightest error can cause pressure deviation or main roller resonance. Furthermore, this multi-point support system increases the number of components and the difficulty of debugging, leading to a 30%-50% increase in maintenance costs and limiting its application in small and medium-sized production lines or compact equipment.

[0012] 2. Crown Roll Design. Crown Roll technology creates a crown profile in the middle of the roll, typically a micro-arc (typically 0.003mm to 0.1mm). This pre-sets a deformation in the opposite direction of static deflection, providing mechanical compensation during the pressing process. This solution is simple, low-cost, and widely adopted as a basic compensation strategy.

[0013] However, this method assumes stable operating conditions and is only applicable to scenarios with constant speed and pressure. In modern intelligent manufacturing environments characterized by high-speed batch switching, wide variations in material hardness, and frequent speed fluctuations, its static structural design struggles to adapt to external disturbances in real time. It lacks adaptability to speed fluctuations and changes in material properties during actual operation, limiting both control precision and flexibility.

[0014] 3. Material and coating optimization. To enhance the roller's deformation and wear resistance at the material level, some high-end manufacturing scenarios use high-strength alloy materials (such as 42CrMo, 50CrNiMo, etc.) or carbon fiber reinforced composite materials as roller cores, and simultaneously apply high-hardness and high-finish surface coating technologies such as diamond-like carbon (DLC) and tungsten carbide (WC-Co).

[0015] While these technologies have somewhat extended roller life and improved thermal stability, they also come with significant costs and manufacturing challenges. For example, carbon fiber composite rollers are typically five to eight times more expensive than traditional steel rollers, and their processing requires specialized techniques and equipment. While superhard coatings can improve wear resistance, their sensitivity to microcracks can also pose a risk of long-term failure and high maintenance and repair costs.

[0016] 4. Intelligent Control Systems. With the recent advancement of sensing and control technologies, some equipment has introduced intelligent roll shape control mechanisms that integrate strain sensors, displacement sensors, and hydraulic / electric servo systems. These mechanisms can adjust roll deformation in real time based on sensor data, achieving dynamic compensation. These systems theoretically enable adaptive control and are an ideal solution for flexible machining.

[0017] However, in reality, the system is still restricted by multiple factors in its application. For example, the system response based on the hydraulic mechanism has a delay of 0.5 to 2 seconds, which cannot meet the millisecond-level response requirements of high-speed production lines; at the same time, the hydraulic system is more sensitive to factors such as oil temperature fluctuations and oil contamination, and stability is difficult to guarantee. In addition, the energy consumption of the intelligent control system is significantly higher than that of the traditional roller system (the increase can reach more than 20%), which puts higher requirements on the power consumption and heat dissipation design of the whole machine. Such systems generally have problems such as long response time, limited adjustment range, high system cost, and complex maintenance, which limit their promotion and application in high-precision, large-scale production scenarios.

[0018] In summary, although the current technical route has alleviated the key pain points of rollers to a certain extent, there is no solution that can achieve a comprehensive balance between structural compactness, real-time control capabilities, thermal stability and economic feasibility. Summary of the Invention

[0019] In response to the above problems, the applicant proposed a roller with collaborative optimization capabilities in terms of structural strength, thermal stability, and intelligent control performance.

[0020] In a first example of the roller, the roller includes: at least one central shaft; a roller portion, the roller portion being sleeve-shaped and surrounding the central shaft; and a stepped support assembly, the stepped support assembly being arranged between the roller portion and the central shaft in the radial direction of the roller and including at least one stage, the stepped support assembly including: a first stage, the first stage being connected to the roller portion, wherein the first stage includes at least one first-stage connecting arm, the first-stage connecting arm including at least two first-stage supporting portions, the first-stage supporting portion being connected to the roller portion; and at least one central shaft supporting portion, the central shaft supporting portion being connected to the central shaft.

[0021] According to the above-mentioned configuration, uniform transmission and gradual release of the central axis deformation are achieved by the hierarchical structure, thereby reducing the deflection deformation of the roller surface.

[0022] In the second example of the roller, optionally including the first example, the roller further comprises: the graded support components are centrally symmetrically arranged around the central axis in the circumferential direction. The graded support components are in the shape of nested sleeves as a whole.

[0023] In a third example of the roller, optionally including one or more of the above examples, the roller further includes: a center shaft support portion formed integrally with the center shaft and extending toward the roller surface portion in a radial direction of the roller.

[0024] In a fourth example of the roller, optionally including one or more of the above examples, the roller further includes: a central shaft support portion penetrating the central shaft and connected to the central shaft, and extending toward the roller surface portion in two radial directions of the roller.

[0025] In a fifth example of the roller, optionally including one or more of the above examples, the roller further comprises: a graded support assembly comprising two levels, comprising: a first level; a second level, the second level being disposed between the central axis support portion and the first level, wherein the second level comprises at least one second-level connecting arm, the second-level connecting arm comprising at least two second-level supports, the second-level supports being connected to corresponding first-level connecting arms of the first level, and wherein the second-level connecting arms are connected to corresponding central axis supports; and a central axis support portion.

[0026] In a sixth example of the roller, optionally including one or more of the above examples, the roller further comprises: a graded support assembly comprising N stages, wherein N> and N is a positive integer, comprising in sequence: a first stage; ... an nth stage, wherein N>n> and n is a positive integer, the nth stage being arranged between the n+ stage and the n- stage, wherein the nth stage comprises at least one nth stage connecting arm, the nth stage connecting arm comprising at least two nth stage supporting portions, the nth stage supporting portion being connected to the corresponding n-stage connecting arm of the n- stage; ... an Nth stage, the Nth stage being arranged between the central axis supporting portion and the N- stage, wherein the Nth stage comprises at least one Nth stage connecting arm, the Nth stage connecting arm comprising at least two Nth stage supporting portions, the Nth stage supporting portion being connected to the corresponding N-stage connecting arm of the N- stage, and wherein the Nth stage connecting arm is connected to the corresponding central axis supporting portion; and a central axis supporting portion.

[0027] In a seventh example of the roller, optionally including one or more of the above examples, the roller further comprises: the nth-stage support portion is connected to the corresponding nth-stage connecting arm of the nth-stage in a rigid or semi-rigid connection manner.

[0028] In an eighth example of the roller, optionally including one or more of the above examples, the roller further comprises: the n-th level connecting arm is elongated in shape and includes two n-th level supporting portions at both ends, and the n-th level supporting portions are connected to the central portions of corresponding n-th level connecting arms of different n-levels.

[0029] In a ninth example of the roller, one or more of the above examples may be optionally included, and the roller further includes: the nth-level connecting arm is in the shape of an "—" and is parallel to the axial direction of the roller, and the nth-level supporting portion is in the shape of an "|" and is parallel to the radial direction of the roller, so that the graded supporting assembly as a whole is in the shape of a "T"-shaped tree-like branch, or the nth-level connecting arm is in the shape of a "V" and is parallel to the axial direction of the roller, and the nth-level supporting portion is in the shape of an "|" and is parallel to the radial direction of the roller, so that the graded supporting assembly as a whole is in the shape of a "Y"-shaped tree-like branch.

[0030] In a tenth example of the roller, which optionally includes one or more of the above examples, the roller further includes: the nth-level connecting arm corresponds to p n+th-level supporting parts, where p≥ and p is a positive integer, and the nth-level connecting arm includes q nth-level supporting parts, where q≥ and q is a positive integer, so that the nth level of the hierarchical supporting assembly has a tree-like branching shape in the form of "p divided by q", and the values ​​of p and q may be the same or different depending on the value of n.

[0031] The roller of the present invention is used for realizing uniform transmission and slow release of the deformation of the central shaft when the central shaft is bent and deformed, so as to reduce the deflection deformation of the roller surface.

[0032] Through a novel structural design and control mechanism, the roller of the present invention not only has sufficient structural rigidity and thermal stability, but can also achieve precise dynamic response with lower latency and higher energy efficiency, thus adapting to the technological development trend of the new generation of high-precision, high-efficiency and intelligent manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to describe the implementation of the above and other features of the present invention, a more particular description of the invention briefly described above will be presented with reference to exemplary embodiments of the invention shown in the accompanying drawings. It will be understood that these drawings depict only exemplary embodiments of the invention and are not to be considered limiting of its scope, and the invention will be described and explained with additional specificity and detail through the use of the accompanying drawings. In the drawings:

[0034] Figure 1 is a perspective view of a roller in an installed state according to an embodiment of the present invention;

[0035] Figure 2 yes Figure 1 Schematic diagram of the deformation of the roller under load;

[0036] Figure 3 is a schematic diagram of the deformation of a solid roller under load according to the prior art;

[0037] Figure 4 is a graph showing deformation amounts of a roller according to an embodiment of the present invention and a solid roller according to the prior art under load;

[0038] Figure 5 3. It is a simulation diagram of the deformation of a solid roller according to the prior art and a roller according to an embodiment of the present invention under load;

[0039] Figure 6 yes Figure 1 Schematic diagram of the hierarchical topology of the roller;

[0040] Figure 7is a schematic diagram of a hierarchical topology of a roller structure according to an embodiment of the present invention;

[0041] Figure 8 Schematic diagram of a hierarchical topology of a roller structure according to an embodiment of the present invention.

[0042] The accompanying drawings are generally drawn to scale, however, the dimensions in the drawings are merely illustrative and not necessarily strictly to scale, but are intended to provide clarity. In other embodiments, other relative dimensions may be used. Here and throughout the following description, identical features appearing in different drawings are denoted by the same or similar reference numerals.

[0043] List of reference numerals:

[0044] 1 Center axis

[0045] 2 roller facial

[0046] 3. Grading support components

[0047] 30 Center shaft support

[0048] 31 First stage connecting arm

[0049] 311 First-level support

[0050] 32 Second stage connecting arm

[0051] 321 Second level support DETAILED DESCRIPTION

[0052] First, the present invention mainly relates to rollers related to rolling devices in any manufacturing field. In particular, the rollers of the present invention are suitable for use in lithium battery pole sheet calenders, coating machines, or similar industrial equipment that requires roller surface precision.

[0053] As used herein, the term "connect" refers to the act of uniting, linking, or fastening two or more objects together to achieve structural or mechanical continuity. This may involve direct contact, interlocking parts, or the use of fasteners or adhesives to create a secure or functional bond between the objects being connected.

[0054] The term "rigid connection" as used in this article refers to two or more components that are fixedly connected to form a whole that cannot rotate or move relative to each other, the degree of freedom of the connection point is zero, forces and moments are directly transmitted through the rigid components, and there is no elastic deformation or only very small deformation (negligible).

[0055] The term "semi-rigid connection" as used in this article refers to two or more components connected by elastic elements, damping structures or specially designed joints, allowing limited relative rotation or small elastic deformation while maintaining a certain stiffness and load-bearing capacity.

[0056] Directional terms used herein, such as "top," "bottom," "upper," "lower," "interior," "inward," "outer," and "outward," are used to assist in describing the present invention in terms of the orientation of the embodiments shown in the drawings. Unless otherwise indicated, such as "horizontal direction," "direction of gravity," etc., directional terms are not absolute up, down, horizontal, vertical, etc., and should not be construed as limiting the present invention to any particular orientation.

[0057] As used herein, the term "axial" and variations thereof refer to directions extending generally along an axis of symmetry, a central axis, an axis of rotation, or the direction of elongation of a particular component or system. For example, an axially extending feature of a component may be a feature extending generally along a direction parallel to the axis of symmetry or the direction of elongation of the component. Further, for example, axially aligned components may be configured such that their axes of rotation are aligned. Similarly, as used herein, the term "radial" and variations thereof refer to directions generally perpendicular to corresponding axial directions. For example, a radially extending structure of a component may extend generally, at least partially, along a direction perpendicular to the longitudinal or central axis of the component. As used herein, the term "circumferential" and variations thereof refer to directions extending around the circumference of an object, or around an axis of symmetry, an axis of rotation, a central axis, or the direction of elongation of a particular component or system.

[0058] As used herein, the terms "comprising," "having," "including," and variations thereof are intended as open-ended transitional phrases, terms, or words requiring the presence of specified elements / steps and also allowing for the presence of additional elements / steps.

[0059] In this application, unless explicitly stated to the contrary, the terms "first", "second", etc. are not intended to indicate any difference in order, position, quantity or importance, but are merely used as labels to distinguish different positions and components, to distinguish one element, component, region and / or position from another element, component, region and / or position.

[0060] The roller for a roller press of the present application generally includes at least a central shaft 1 , a roller surface portion 2 and a stepped support assembly 3 .

[0061] In the present application, the roll face portion 2 is sleeve-shaped and surrounds the central shaft 1, and the step-by-step support assembly 3 is provided in the radial direction of the roll between the roll face portion 2 and the central shaft 1. The step-by-step support assembly 3 includes at least one stage.

[0062] In one embodiment of the present application, the staged support assembly 3 includes: a first stage connected to the roll surface portion 2 ; and at least one central shaft support portion 30 connected to the central shaft 1 .

[0063] Specifically, the first stage includes at least one first-stage connecting arm 31, which includes at least two first-stage supporting portions 311. The first-stage supporting portions 311 are connected to the roller surface portion 2 and provide force transmission support and first-stage positioning. Preferably, the stepped supporting assembly 3 can be arranged symmetrically in the circumferential direction around the central axis 1.

[0064] The stepped support assembly 3 extends fractally in the radial direction of the roller, from the central axis 1 toward the roll face 2. This branched structure comprises at least one stage, each consisting of a connecting arm and a support portion, forming a hierarchical, branched, lever-type force transmission system. When the central axis bends, the deformation is transmitted from the roller support portion 30 to the first-stage support portion 311. The deformation is distributed to the first-stage support portion, which mitigates the deformation and reduces roll face deformation caused by the deflection of the central axis.

[0065] Preferably, the central shaft 1 is a solid shaft or a hollow shaft. Preferably, the material of the central shaft 1 includes alloy and / or carbon fiber composite material.

[0066] Preferably, the rollers used in the roller press can also be provided with multiple center axes 1 according to actual working conditions and performance requirements, such as 4, 6, or 8 center axes 1, and are arranged in a centrally symmetrical manner around the central axis of the roller to ensure uniform force and stable operation.

[0067] For example, in the case of four central shafts 1, their axes are evenly distributed on a circumference concentric with the center point of the roller, as viewed from a cross-section. The stepped support assemblies 3 are positioned radially between the roll face 2 and the central shafts 1 and are evenly distributed along the axisymmetric direction of the four central shafts. Each central shaft 1 corresponds to one of the stepped support assemblies 3. The first stage of the stepped support assemblies 3 tightly connects to the roll face 2, evenly distributing the pressure from the roll face 2. The central shaft support 30 connects to the central shaft 1, providing stable support and force transmission. This allows the four central shafts 1 to share the roller's load during rolling, reducing the stress on a single central shaft 1.

[0068] In this application, a plurality of different embodiments will be provided for the roller having the above structure. The specific structure of each embodiment will be described in detail below with reference to the accompanying drawings.

[0069] (Illustrative Example 1)

[0070] Figure 1 This is a three-dimensional diagram of a roller according to an embodiment of the present application in an installed state.

[0071] In this alternative exemplary embodiment, the staged support assembly 3 may be a two-stage support assembly comprising: a first stage connected to the roll surface portion 2 ; a second stage disposed between the central shaft support portion 30 and the first stage; and two central shaft supports 30 connected to the central shaft 1 .

[0072] like Figure 1 As shown, the first stage includes four first-stage connecting arms 31, each of which includes two first-stage supporting portions 311, which are connected to the roller surface portion 2; the second stage includes two second-stage connecting arms 32, each of which includes two second-stage supporting portions 321, which are connected to the corresponding first-stage connecting arms 31 of the first stage, and the two second-stage connecting arms 32 are each connected to the corresponding central axis supporting portion 30.

[0073] Preferably, the graded support assembly 3 is cylindrical in shape as a whole, such as Figure 1 As shown, the connecting arms and supporting parts of each stage are cylindrical.

[0074] Preferably, the center shaft support portion 30 may penetrate the center shaft 1 and be connected to the center shaft 1 , and extend toward the roll surface portion 2 in both directions in the radial direction of the roll.

[0075] Preferably, the center shaft support portion 30 may be integrally formed with the center shaft 1 and extend from the center shaft 1 toward the roll surface portion 2 in the radial direction of the roller.

[0076] Figure 2 FIG. 4 is a schematic diagram illustrating the deformation of a roller according to an embodiment of the present invention under load.

[0077] Preferably, the two second-stage connecting arms are elongated and each includes two second supports at each end. These second supports are connected to the center portion of the corresponding first-stage connecting arms of different first stages. Similarly, the four first-stage connecting arms are elongated and each includes two first supports at each end, forming a "T" tree-like structure that is divided into two. Because they are connected to the center of each connecting arm, due to the principle of lever force transmission, an equal-torque lever structure is formed, which can evenly distribute the curvature of the central axis 1 to the roller surface portion 2.

[0078] Figure 3 is a schematic diagram of the deformation of a solid roller under load according to the prior art. Figure 4 FIG. 4 is a graph showing deformation amounts of a roller according to an embodiment of the present invention and a solid roller according to the prior art under load. Figure 5 It is a simulation diagram of the deformation amount of the solid roller according to the prior art and the roller according to the structure of the embodiment of the present invention under load. Figure 2-Figure 5It shows that the bending deformation of the roller according to the structure of the present application is much smaller than that of a solid roller under the same load.

[0079] In one test, the diameter of the roller was 400 mm and the length of the roller face was 1600 mm. One of the rollers tested was a solid roller of the prior art having the following characteristics: Figure 3 The deformation pattern shown in FIG. 1 is a roller having a weight of 6.5 t and a roller surface straightness of 33 μm under a load of 200 t. The other roller under test is a roller having the structure of Example 1 of the present application, which has the following characteristics: Figure 2 The deformation pattern shown is that the roller weighs 5.5 tons and has a roller surface straightness of 10 μm under a load of 200 tons. The roller adopting the structure of the present application reduces the weight by 17% and the deformation by 70%.

[0080] Furthermore, it is understood that the staged support assembly 3 of the present application may not only have the first stage or the first and second stages as described above, but may include more stages. Specifically, the staged support assembly 3 may include N stages, where N>1 and N is a positive integer, including: a first stage connected to the roller surface portion 2; ... an nth stage, where N>n>1 and n is a positive integer, the nth stage being disposed between the n+1th stage and the n-1th stage; ... an Nth stage being disposed between the central shaft support portion 30 and the N-1th stage; and two central shaft support portions 30 connected to the central shaft 1.

[0081] The nth stage includes at least one nth stage connecting arm, which includes at least two nth stage supporting portions, which are connected to the corresponding n-1th stage connecting arm of the n-1th stage. The Nth stage includes at least one Nth stage connecting arm, which includes at least two Nth stage supporting portions, which are connected to the corresponding N-1th stage connecting arm of the N-1th stage, and at least one Nth stage connecting arm is each connected to a corresponding central axis supporting portion 30.

[0082] Preferably, the n-th level supporting portion is connected to the corresponding n-1-th level connecting arm of the n-1-th level in a rigid connection or semi-rigid connection manner.

[0083] (Illustrative Example 2)

[0084] In this alternative illustrative embodiment, the stepped support assembly 3 may be a three-stage support assembly including: a first stage connected to the roller surface portion 2; a second stage disposed between the third stage and the first stage; a third stage disposed between the central shaft support portion 30 and the second stage; and a central shaft support portion 30 connected to the central shaft 1.

[0085] The second stage includes at least one second stage connecting arm 32 , and the second stage connecting arm includes at least two second stage supporting portions, and the second stage supporting portions are connected to the corresponding first stage connecting arms of the first stage.

[0086] Among them, the third level includes at least one third level connecting arm, the third level connecting arm includes at least two third level supporting parts, the third level supporting part is connected to the corresponding second level connecting arm 32 of the second level, and the corresponding central axis supporting part 30 is connected to the corresponding third level connecting arm of the third level.

[0087] (Illustrative Example 3)

[0088] In this alternative illustrative embodiment, the stepped support assembly 3 may be a four-stage support assembly including: a first stage connected to the roller surface portion 2; a second stage disposed between the third stage and the first stage; a third stage disposed between the fourth stage and the second stage; a fourth stage disposed between the central shaft support portion 30 and the third stage; and a central shaft support portion 30 connected to the central shaft 1.

[0089] The second stage includes at least one second stage connecting arm 32, which is connected to the corresponding third stage supporting portion of the third stage. The second stage connecting arm includes at least two second stage supporting portions, which are connected to the corresponding first stage connecting arm of the first stage.

[0090] The third stage includes at least one third stage connecting arm, and the third stage connecting arm includes at least two third stage supporting portions, and the third stage supporting portions are connected to the corresponding second stage connecting arms 32 of the second stage.

[0091] Among them, the fourth level includes at least one fourth level connecting arm, the fourth level connecting arm includes at least two fourth level supporting parts, the fourth level supporting part is connected to the corresponding third level connecting arm of the third level, and the corresponding central axis supporting part 30 is connected to the corresponding fourth level connecting arm of the fourth level.

[0092] Figure 6 is based on Figure 1 Schematic diagram of the hierarchical topology of the roller.

[0093] The nth-stage connecting arm is shaped like a letter "-" and parallel to the roller's axial direction, while the nth-stage supporting portion is shaped like a letter "|" and parallel to the roller's radial direction, giving the stepped support assembly 3 an overall "T"-shaped, tree-like, branching structure. This tree-like structure redistributes stress, evenly transferring deformation of the central shaft 1 to the roller face 2. The bending moment of the roller face 2 is evenly distributed along the axial direction, significantly reducing straightness deviations on the roller face 2 and significantly reducing deformation compared to a solid roller.

[0094] Furthermore, it can be understood that each level of the hierarchical support assembly 3 of the present application may not only have the “T”-shaped tree-like branching shape as described above.

[0095] (Showing Example 4)

[0096] Figure 7 is a schematic diagram of a hierarchical topology of a roller structure according to an embodiment of the present invention;

[0097] Among them, the nth-level connecting arm is in a "V" shape and is parallel to the axial direction of the roller as a whole, and the nth-level supporting portion is in a "|" shape and is parallel to the radial direction of the roller, so that the hierarchical supporting assembly 3 as a whole is in a "Y"-shaped tree-like branching shape.

[0098] Furthermore, it can be understood that the hierarchical support assembly 3 of the present application may not only have the form of two connecting arms at each stage and two supporting parts of each connecting arm as described above.

[0099] Specifically, the n-th connecting arm of the hierarchical support assembly 3 may correspond to p (n+1)-th supporting portions, where p ≥ 2 and p is a positive integer, and the n-th connecting arm may include q (n-th) supporting portions, where q ≥ 1 and q is a positive integer. This allows the n-th level of the hierarchical support assembly 3 to have a tree-like branching structure in the form of "p divided by q," and the values ​​of p and q may be the same or different depending on the value of n. Therefore, the n-th level of the hierarchical support assembly 3 may have a structure of 1 divided by 2, 1 divided by 3, 1 divided by 4, 2 divided by 2, 2 divided by 3, 2 divided by 4, and so on.

[0100] (Showing Example 5)

[0101] Figure 8 Schematic diagram of a hierarchical topology of a roller structure according to an embodiment of the present invention.

[0102] Among them, the second-level connecting arm 32 of the hierarchical support assembly 3 corresponds to the two central axis support parts 30, and the second-level connecting arm 32 includes three second-level support parts 321, so that the second level of the hierarchical support assembly 3 presents a tree-like branching shape in the form of "2 divided into 3".

[0103] Among them, the first-level connecting arm 31 of the hierarchical support assembly 3 corresponds to one second-level support portion 321, and the first-level connecting arm 31 includes three first-level support portions 311, so that the first level of the hierarchical support assembly 3 presents a tree-like branching shape in the form of "1 divided into 3".

[0104] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention are clearly and completely described above in conjunction with the specific embodiments of the present invention and the accompanying drawings.

[0105] Although various embodiments have been described above, it should be understood that the embodiments described are only some of the embodiments of the present invention, rather than all of the embodiments, and are presented in an exemplary rather than restrictive manner. It will be apparent to those skilled in the relevant art that the disclosed subject matter can be implemented in other specific forms without departing from its spirit and essential characteristics.

Claims

1. A roller for a roller press, characterized in that: The roller comprises: at least one central axis (1); a roller portion (2), the roller portion (2) being sleeve-shaped and surrounding the central axis (1); and A graded support assembly (3), the graded support assembly (3) being arranged between the roller surface portion (2) and the central axis (1) in the radial direction of the roller and comprising at least one stage, the graded support assembly (3) comprising: a first stage connected to the roller face portion (2), wherein the first stage comprises at least one first stage connecting arm (31), the first stage connecting arm (31) comprises at least two first stage supporting portions (311), and the first stage supporting portions (311) are connected to the roller surface portion (2); and At least one central shaft support (30) connected to the central shaft (1).

2. The roller according to claim 1, characterized in that The graded support components (3) are arranged in a centrally symmetrical manner in the circumferential direction around the central axis (1).

3. The roller according to claim 1, characterized in that The center shaft support portion (30) is formed integrally with the center shaft (1) and extends toward the roller surface portion (2) in the radial direction of the roller.

4. The roller according to claim 1, characterized in that The center shaft support portion (30) penetrates the center shaft (1) and is connected to the center shaft (1), and extends toward the roller surface portion (2) in both directions in the radial direction of the roller.

5. The roller according to claim 1, characterized in that The hierarchical support assembly (3) comprises two stages, including: said first level; a second stage, the second stage being disposed between the central shaft support portion (30) and the first stage, wherein the second stage comprises at least one second stage connecting arm (32), the second stage connecting arm (32) comprises at least two second stage supporting portions (321), the second stage supporting portions (321) are connected to the corresponding first stage connecting arms (31) of the first stage, and wherein the second-stage connecting arm (32) is connected to the corresponding central shaft supporting portion (30); and The central shaft supporting portion (30).

6. The roller according to claim 1, characterized in that The hierarchical support assembly (3) comprises N stages, wherein N>1 and N is a positive integer, including: said first level; … The nth level, wherein N>n>1 and n is a positive integer, the nth level is arranged between the n+1th level and the n-1th level, The nth stage includes at least one nth stage connecting arm, the nth stage connecting arm includes at least two nth stage supporting portions, and the nth stage supporting portion is connected to the corresponding n-1th stage connecting arm of the n-1th stage; … The Nth stage is provided between the central shaft support portion (30) and the N-1th stage, wherein the Nth stage comprises at least one Nth stage connecting arm, the Nth stage connecting arm comprises at least two Nth stage supporting portions, the Nth stage supporting portions are connected to the corresponding N-1th stage connecting arm of the N-1th stage, and wherein the Nth-stage connecting arm is connected to the corresponding central axis supporting portion (30); and The central shaft supporting portion (30).

7. The roller according to claim 6, characterized in that The n-th level supporting portion is connected to the corresponding n-1-th level connecting arm of the n-1-th level in a rigid connection or a semi-rigid connection manner.

8. The roller according to claim 6, characterized in that The n-th stage connecting arm has an elongated shape and includes two n-th stage supporting portions at both ends, and the n-th stage supporting portions are connected to central portions of corresponding n-1-th stage connecting arms of different n-1-th stages.

9. The roller according to claim 8, characterized in that The nth-level connecting arm is in the shape of a letter "—" and is parallel to the axial direction of the roller, and the nth-level supporting portion is in the shape of a letter "|" and is parallel to the radial direction of the roller, so that the hierarchical supporting assembly (3) as a whole is in the shape of a "T"-shaped tree branch, or The nth-level connecting arm is in a "V" shape and is parallel to the axial direction of the roller as a whole, and the nth-level supporting portion is in a "|" shape and is parallel to the radial direction of the roller, so that the hierarchical supporting assembly (3) is in a "Y"-shaped tree-like branching shape as a whole.

10. The roller according to claim 6, characterized in that The nth-level connecting arm corresponds to p n+1th-level supporting parts, where p≥2 and p is a positive integer, and the nth-level connecting arm includes q nth-level supporting parts, where q≥1 and q is a positive integer, so that the nth level of the hierarchical supporting assembly 3 has a tree-like branching shape in the form of "p divided by q", and the values ​​of p and q can be the same or different depending on the value of n.

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