Cold rolling system with anti-curling assembly

Abstract

The utility model belongs to cold rolling technical field especially relates to copper band cold rolling, the utility model provides a cold rolling system with prevent the cold rolling system who raises skin subassembly, include: cold rolling mill, it has frame, roll coating subassembly is set up in at least one side of frame, is suitable for smearing cold rolling oil to the surface of steel roll, roll coating subassembly includes: the oiling roller that sets up up and down, wherein, the oiling roller includes: steel pipe inner core, with Frame rotation is connected, the pipe wall of steel pipe inner core is uniformly distributed with oil delivery hole, rubber layer, its surface is provided with the oil storage channel corresponding with oil delivery hole and is covered in steel pipe inner core surface, sprayer, it sets up in oil delivery hole, the utility model discloses through setting up oil delivery hole and built -in sprayer on steel pipe inner core, oil liquid is directly sprayed to the oil storage channel on the surface of rubber layer through the mode that directional injection combines the temporary storage of oil storage channel, avoids traditional exposed oil groove or soaking type oil supply oil liquid splashing and waste, improves the oiling reliability.

Description

Technical Field

[0001] This utility model belongs to the field of cold rolling technology, specifically relating to cold rolling of copper strip, and more particularly to a cold rolling system with anti-warping components. Background Technology

[0002] In the production of thin metal strips such as tin-phosphor bronze strips, an oiling treatment is usually applied to the surface of the metal strip before cold rolling to improve the subsequent cold rolling process, reduce friction between the rolls and the strip, prevent the strip from sticking or undergoing thermal deformation during rolling, and enhance the surface quality and rust resistance of the strip. The oiling process is one of the key steps in the surface treatment of metal strips; its uniformity, oil film thickness control, and operational reliability directly affect the cold rolling effect and product quality.

[0003] In related technologies, since the oiling roller usually relies on the exposed oil tank or oil support plate to provide oil, the oil in the open oil tank is exposed to the air for a long time and is easily affected by dust, impurities or oxidation. At the same time, the oil in the oil tank is easily dripped or splashed due to the rotation of the roller, the movement of the strip or splashing, which leads to a decrease in the performance of the oil, thereby affecting the oiling effect and the surface quality of the strip, and affecting the uniformity of oiling.

[0004] Therefore, how to solve the problem of oil leakage affecting the oiling effect of the strip is a technical problem that urgently needs to be solved in this field.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one cold rolling system with anti-peeling components to solve the technical problem of oil leakage and contamination affecting the oiling effect of strip.

[0007] In a first aspect, embodiments of this disclosure provide a cold rolling system with an anti-skinning component, comprising: a cold rolling mill having a frame; a roller coating assembly disposed on at least one side of the frame, adapted to apply cold rolling oil to the surface of a steel coil; the roller coating assembly comprising: upper and lower oiling rollers; wherein the oiling roller comprises: a steel tube core rotatably connected to the frame, the steel tube core having oil delivery holes evenly distributed on its tube wall; a rubber layer covering the surface of the steel tube core, the surface of which has oil storage channels corresponding to the oil delivery holes; and a nozzle disposed within the oil delivery holes, a portion of the nozzle extending into the oil storage channels, causing cold rolling oil to be sprayed from the steel tube core through the oil delivery holes to the oil storage channels; wherein the nozzle is configured to spray cold rolling oil from the steel tube core to the oil delivery holes, causing the cold rolling oil to adhere to the surface of the strip passing between the two rubber layers.

[0008] In one optional embodiment, the end of the oil storage channel facing the outside of the rubber layer is the oil discharge end, and the oil discharge end is provided with a permeable pad layer.

[0009] In one alternative embodiment, the rubber layer is provided with a porous structure, which is suitable for allowing cold-rolled oil in the oil storage channel to permeate uniformly to the outside of the rubber layer.

[0010] In one alternative embodiment, the surface of the rubber layer is integrally provided with a raised structure.

[0011] In one alternative embodiment, the lower portion of the frame is provided with a tray suitable for collecting excess cold rolling oil.

[0012] Secondly, this disclosure also provides a cold rolling system with an anti-skinning component, comprising: an upper and lower oiling roller; wherein the oiling roller comprises: a steel tube inner core, the wall of which is evenly distributed with oil delivery holes; a rubber layer covering the surface of the steel tube inner core, the rubber layer having a porous structure, the oil delivery holes communicating with the porous structure; wherein the strip is adapted to pass between the two rubber layers to drive the steel tube inner core to rotate, so that cold rolling oil passes through the oil delivery holes and penetrates evenly from the inside to the outside of the rubber layer through the porous structure.

[0013] In one optional embodiment, the surface of the rubber layer is provided with an oil storage channel corresponding to the oil inlet, and the end of the oil storage channel facing the outside of the rubber layer is the oil discharge end, which is provided with a permeable pad layer.

[0014] In one alternative embodiment, a nozzle is provided inside the oil delivery hole, which is adapted to spray oil into the oil storage channel.

[0015] In one alternative embodiment, the surface of the rubber layer is integrally provided with a raised structure.

[0016] The beneficial effects of this utility model are that it provides a cold rolling system with an anti-peeling component. By setting an oil supply hole and an internal nozzle on the inner core of the steel pipe, the oil is sprayed directly onto the oil storage channel on the surface of the rubber layer through directional spraying combined with temporary storage of the oil storage channel. This avoids the splashing and waste of oil in traditional exposed oil tanks or immersion oil supply, reduces external oil leakage, dripping and pollution, and improves the reliability of oiling.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] 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. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A perspective view of a cold rolling system with anti-skinning components provided in an embodiment of this disclosure; Figure 2 A partial perspective view of the roller coating assembly provided in an embodiment of this disclosure; Figure 3 A partial BB cross-sectional view of the inner core of the steel pipe provided in an embodiment of this disclosure; Figure 4 A partial AA cross-sectional view of the rubber layer provided in an embodiment of this disclosure.

[0021] In the picture: 1. Cold rolling mill; 11. Mill stand; 2. Roller coating assembly; 21. Steel pipe inner core; 211. Oil inlet; 212. Nozzle; 22. Rubber layer; 221. Oil storage channel; 222. Oil outlet; 223. Penetrating pad layer; 224. Porous structure; 225. Raised structure; 3. Pallet; 4. Strip material. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0024] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0025] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0026] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0027] Research has revealed the following drawbacks of existing technologies: In related technologies, oiling rollers typically rely on exposed oil troughs or oil trays to provide oil. The oil in open oil troughs is exposed to air for extended periods, making it susceptible to dust, impurities, or oxidation. Furthermore, the oil in the troughs is prone to dripping or splashing due to roller rotation, strip movement, or splashing, leading to a decline in oil performance and consequently affecting the oiling effect and strip surface quality, as well as the uniformity of oiling.

[0028] Therefore, how to solve the problem of oil leakage affecting the oiling effect of the strip is a technical problem that urgently needs to be solved in this field.

[0029] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] like Figures 1 to 4 As shown, some embodiments provide a cold rolling system with an anti-skinning component. A cold rolling system with an anti-skinning component includes: a cold rolling mill 1 having a frame 11; the cold rolling mill 1 is the main equipment of the entire system, used for cold rolling thinning of metal strip 4; it includes the frame 11, which is the basic structure for supporting and installing other functional components (such as a roller coating component 2, a tray 3, etc.); during the cold rolling process, the strip 4 is compressed and thinned between upper and lower rolls, which generates a large amount of heat and may cause increased friction between the strip 4 and the rolls, leading to surface defects (such as skinning, scratches, etc.); therefore, a roller coating component 2 is provided on the frame 11, i.e., an oiling roller is installed on at least one side of the frame 11 (usually the inlet side), to perform surface oiling pretreatment before the strip 4 enters the rolling zone, to prevent skinning during subsequent anti-skinning oiling.

[0033] The roller coating assembly 2, located on at least one side of the stand 11, is suitable for applying cold rolling oil to the surface of the steel coil. The roller coating assembly 2 is mainly used to uniformly coat the surface of the strip 4 with a layer of cold rolling oil before it enters the cold rolling zone. This serves to lubricate, cool, and prevent sticking, thus preventing surface defects such as peeling and cracking of the strip 4 due to excessive friction or high temperature during rolling. Specifically, the roller coating assembly 2 uses a pair of oiling rollers (set vertically to clamp the strip 4) on the upper and lower sides of the strip 4. The cold rolling oil is transported to the surface of the oiling rollers through internal pipelines and uniformly transferred to the surface of the strip 4 through the microstructure of the roller surface, forming a uniform oil film. By performing efficient and controllable oiling before the strip 4 enters the rolling zone, the coefficient of friction between the strip 4 and the rolls is significantly reduced, heat accumulation and mechanical stress concentration are decreased, thereby effectively preventing peeling of the strip 4 surface and improving the quality and yield of cold-rolled products.

[0034] The roller coating assembly 2 includes: upper and lower oiling rollers; wherein the oiling rollers include: a steel tube inner core 21, rotatably connected to the frame 11, with oil delivery holes 211 evenly distributed on the tube wall of the steel tube inner core 21; a rubber layer 22, which covers the surface of the steel tube inner core 21, with oil storage channels 221 corresponding to the oil delivery holes 211 on its surface; and a nozzle 212, which is disposed inside the oil delivery holes 211, with a portion of the nozzle 212 extending into the oil storage channel 221, so that cold rolling oil is sprayed from inside the steel tube inner core 21 through the oil delivery holes 211 to the oil storage channel 221; wherein the nozzle 212 is configured to spray cold rolling oil from inside the steel tube inner core 21 to the oil delivery holes 211, so that the cold rolling oil adheres to the surface of the strip 4 passing between the two rubber layers 22, and the strip 4 moves in the F1 direction, at which time the upper roller rotates counterclockwise and the lower roller rotates clockwise.

[0035] The oiling rollers are a pair (usually one above the other), symmetrically arranged on the upper and lower sides of the strip 4, used to clamp and transfer the oil film to the surface of the strip 4. Each oiling roller consists of a steel tube core 21 and a rubber layer 22 covering it, forming a composite structure roller; when the strip 4 passes between the two oiling rollers, the movement of the strip 4 drives the oiling roller to rotate; at the same time, the cold rolling oil is transported through the oil delivery hole 211 inside the steel tube core 21 to the oil storage channel 221 in the rubber layer 22, and finally evenly released to the surface of the strip 4 through the porous structure 224 or the permeable pad layer 223.

[0036] The oiling roller is the carrier for realizing the functions of oil delivery, oil storage, and oiling. Its internal steel tube core 21 is responsible for oil delivery, while the external rubber layer 22 is responsible for the uniform distribution and flexible contact of the oil film. The two work together to complete the precise oiling "from the oil tank to the surface of the strip 4". In other words, the composite roller structure ensures both the rigidity and sealing of the oil transmission (steel tube core 21) and the performance of flexible contact and uniform oiling with the strip (rubber layer 22), which improves the stability and controllability of the oiling process, avoids local over-oiling or oil leakage, and effectively prevents the surface of the strip 4 from peeling.

[0037] The inner core 21 is the central support component of the oiling roller. It is a hollow tubular structure with several oil delivery holes 211 evenly distributed on its tube wall. These holes are used to introduce the cold rolling oil provided by the external oil supply system into the oiling roller and further deliver it to the rubber layer 22.

[0038] Cold-rolled oil enters the inner core 21 of the steel pipe through the oil supply pipe, and then flows into the oil storage channel 221 of the rubber layer 22 through the oil delivery hole 211. The inner core 21 of the steel pipe is rotatably connected to the frame 11 and can rotate freely under the drive of the strip 4. The inner core 21 of the steel pipe is the main body of the oil delivery channel and is directly connected to the oil delivery hole 211 and the nozzle 212. Its rotatable connection design does not obstruct the movement of the strip 4 and can rotate naturally with the movement of the strip 4, improving the uniformity of oil coating. Its hollow structure design realizes the internal delivery of oil circuit, avoiding the pollution and wear problems caused by exposed oil pipes. The evenly distributed oil delivery holes 211 ensure that the oil can enter all areas of the rubber layer 22 evenly, laying the foundation for subsequent uniform oil coating.

[0039] The nozzle 212 is a small spraying device installed inside the oil inlet 211. A part of it extends into the oil storage channel 221 of the rubber layer 22 to spray oil into the oil storage channel 221 at a certain pressure and direction. The nozzle 212 sprays cold-rolled oil from the inner core 21 of the steel pipe into the oil storage channel 221 at a certain speed and direction, making the oil more easily diffuse and penetrate into the oil storage channel 221 and the subsequent pore structure 224, thereby improving the oiling efficiency and uniformity.

[0040] It should be further explained that the nozzle 212 works in conjunction with the oil inlet 211, the oil storage channel 221, and the penetrating pad 223 to achieve full-process control from oil input to final coating. Specifically, the nozzle 212 sprays the rolling oil into the oil storage channel 221 in the F2 direction, and disperses the rolling oil in the F3 and F4 directions, ultimately acting on the surface of the rubber layer 22. Its positioning is deep into the oil storage channel 221, which enhances the contact and penetration between the oil and the rubber layer 22. Specifically, the oil is supplied by spraying, which improves the dispersion and penetration depth of the oil, ensuring that the rubber layer 22 stores oil fully and releases it evenly, thereby forming a uniform and continuous lubricating film on the strip surface, effectively preventing peeling defects caused by local dry friction.

[0041] The end of the oil storage channel 221 facing the outside of the rubber layer 22 is the oil discharge end 222, and the oil discharge end 222 is provided with a permeable pad layer 223. The rubber layer 22 is provided with a porous structure 224, which is suitable for allowing the cold rolling oil in the oil storage channel 221 to permeate evenly to the outside of the rubber layer 22. The surface of the rubber layer 22 is integrally provided with a raised structure 225.

[0042] Specifically, the rubber layer 22 is a flexible rubber material layer covering the outside of the inner core 21 of the steel pipe, which is in direct contact with the strip. Its surface or interior is provided with microstructures such as oil storage channels 221, pore structures 224, permeable pads 223, and protrusion structures 225, which are used to control the storage, diffusion and release of oil. The rubber layer 22 rotates with the movement of the strip 4. During the rotation, the oil storage channels 221 inside it receive oil from the inner core 21 of the steel pipe, and gradually release the oil to the surface of the strip 4 through the pore structures 224 to form a uniform oil film.

[0043] The rubber layer 22 is the final component for oil storage and coating, forming a composite roller with the inner core 21 of the steel pipe. The pore structure 224, the permeable pad layer 223, and the raised structure 225 on its surface jointly regulate the distribution and thickness of the oil film. The rubber material has good elasticity and flexibility, which can adapt to the surface shape of the strip and achieve good contact. The microstructure designed on it ensures the controllable release of oil, avoids too much or too little oil, and prevents problems such as peeling and scratches on the surface of the strip 4 from the source.

[0044] The oil storage channel 221, together with the oil delivery hole 211, nozzle 212, oil discharge end 222, and permeation pad 223, forms the intermediate link for the transmission of oil from the inside to the outside coating. The oil storage channel 221 plays the role of oil buffering and uniform distribution, so that the oil is not released in a concentrated manner, but is gradually and evenly transferred to the surface of the strip, thereby improving the stability of the lubrication effect.

[0045] By adjusting the permeation pad 223, the concentrated dripping or excessive loss of oil is avoided, ensuring that the surface of the strip is always in a moderately lubricated state.

[0046] The raised structure 225 is a micro-protrusion integrally formed on the surface of the rubber layer 22. It may be granular, striped, or other regularly distributed protrusions. These protrusions can form micro-gaps on the surface of the strip 4, which helps the oil to be distributed more evenly under pressure and increases the contact friction guidance between the strip 4 and the roller surface. In other words, the raised structure 225 enhances the uniformity of oil distribution on the surface of the strip 4 and improves the contact state between the strip and the oiling roller.

[0047] A tray 3 is provided on the lower part of the frame 11, which is suitable for collecting excess cold rolling oil. The tray 3 is installed on the oil receiving tray on the lower part of the frame 11 to collect excess cold rolling oil dripping from the strip 4 or the oiling roller. During the oiling process, some oil may not be completely absorbed by the strip 4 and drip down. The tray 3 collects and recycles this oil to avoid environmental pollution or waste. As an auxiliary functional component of the oiling system, it is used in conjunction with the roller coating component 2 to improve the entire oiling and recycling process. It realizes the recycling or centralized treatment of cold rolling oil, improves the environmental protection and economy of the system, and maintains the cleanliness and safety of the equipment area.

[0048] Some embodiments provide a cold rolling system with an anti-skinning component, including: an upper and lower oiling roller; wherein the oiling roller includes: a steel tube core 21, the wall of which is evenly distributed with oil delivery holes 211; a rubber layer 22 covering the surface of the steel tube core 21, the rubber layer 22 having a porous structure 224, the oil delivery holes 211 communicating with the porous structure 224; wherein the strip is adapted to pass between the two rubber layers 22 to drive the steel tube core 21 to rotate, so that cold rolling oil passes through the oil delivery holes 211 and permeates evenly from the inside to the outside of the rubber layer 22 through the porous structure 224.

[0049] The surface of the rubber layer 22 is provided with an oil storage channel 221 corresponding to the oil inlet 211. The end of the oil storage channel 221 facing the outside of the rubber layer 22 is the oil outlet 222, and the oil outlet 222 is provided with a permeable pad 223. A nozzle 212 is provided inside the oil inlet 211, which is suitable for spraying oil into the oil storage channel 221. A raised structure 225 is integrally provided on the surface of the rubber layer 22.

[0050] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0052] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A cold rolling system with an anti-warping component, characterized in that, include: Cold rolling mill (1), which has a frame (11); A roller coating assembly (2), disposed on at least one side of the frame (11), is adapted to apply cold rolling oil to the surface of the steel coil; The roller coating assembly (2) includes: an oiling roller arranged vertically; The oiling roller includes: The inner core of the steel pipe (21) is rotatably connected to the frame (11), and oil delivery holes (211) are evenly distributed on the pipe wall of the inner core of the steel pipe (21). A rubber layer (22) is wrapped around the surface of the inner core (21) of the steel pipe, and an oil storage channel (221) corresponding to the oil delivery hole (211) is provided on its surface. The nozzle (212) is located inside the oil delivery hole (211), and part of the nozzle (212) extends into the oil storage channel (221) so that the cold rolling oil is sprayed from the inner core (21) of the steel pipe through the oil delivery hole (211) to the oil storage channel (221). The nozzle (212) is configured to spray cold rolling oil from the inner core (21) of the steel tube to the oil delivery hole (211), so that the cold rolling oil adheres to the surface of the strip (4) passing between the two rubber layers (22).

2. The cold rolling system as described in claim 1, characterized in that, The oil storage channel (221) has an oil discharge end (222) facing the outside of the rubber layer (22), and the oil discharge end (222) is provided with a permeable pad layer (223).

3. The cold rolling system as described in claim 1, characterized in that, The rubber layer (22) is provided with a porous structure (224), which is suitable for allowing the cold-rolled oil in the oil storage channel (221) to permeate evenly to the outside of the rubber layer (22).

4. The cold rolling system as described in claim 2 or 3, characterized in that, The surface of the rubber layer (22) is integrally provided with a raised structure (225).

5. The cold rolling system as described in claim 4, characterized in that, The lower part of the frame (11) is provided with a tray (3), which is suitable for collecting excess cold rolling oil.

6. A cold rolling system with an anti-warping component, characterized in that, include: Oiling rollers are arranged at the top and bottom; The oiling roller includes: The inner core of the steel pipe (21) has oil delivery holes (211) evenly distributed on the pipe wall. A rubber layer (22) is wrapped around the surface of the inner core (21) of the steel pipe. A porous structure (224) is provided on the rubber layer (22). The oil delivery hole (211) is connected to the porous structure (224). The strip is adapted to pass between two rubber layers (22) to drive the inner core (21) of the steel tube to rotate, so that the cold rolling oil passes through the oil delivery hole (211) and permeates evenly from the inside to the outside of the rubber layer (22) through the pore structure (224).

7. The cold rolling system as described in claim 6, characterized in that, The surface of the rubber layer (22) is provided with an oil storage channel (221) corresponding to the oil delivery hole (211). The end of the oil storage channel (221) facing the outside of the rubber layer (22) is the oil discharge end (222), and the oil discharge end (222) is provided with a permeable pad layer (223).

8. The cold rolling system as described in claim 7, characterized in that, The oil delivery hole (211) is equipped with a nozzle (212) which is suitable for spraying oil into the oil storage channel (221).

9. The cold rolling system as described in claim 8, characterized in that, The surface of the rubber layer (22) is integrally provided with a raised structure (225).

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