A self-lubricating roll structure

Abstract

The utility model relates to the technical field of roll, specifically disclose a kind of self-lubricating roll structure, including roll body, the roll body includes roll body, roll neck and axle head, the roll neck is equipped with oil filler, and the roll body inside is equipped with oil storage cavity, and the oil storage cavity is cylindrical through-hole along roll body interior axis extension, and the oil storage cavity is communicated with oil filler;Several oil guide channels are equipped in the roll body, and the oil guide channel is evenly distributed along the circumference of roll body, and the inlet of the oil guide channel is communicated with the oil storage cavity, and the outlet is located the outer peripheral surface of the roll body;Replaceable throttle sleeve is equipped at the inlet of the oil guide channel;One-way valve is equipped at the outlet of the oil guide channel.The utility model utilizes the centrifugal force of roll rotation to make lubricating oil from oil storage cavity through oil guide channel to open one-way valve, and after entering oil equalizing groove, it is evenly diffused to working surface, realizes efficient, uniform automatic lubrication, and structure is simple, sealing is good, and reliable in operation.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill technology, and specifically discloses a self-lubricating rolling mill structure. Background Technology

[0002] Rolls are the core working components of rolling mills that cause continuous plastic deformation of metal. They mainly consist of the roll body, roll neck, and shaft end. Their lubrication effect directly affects the quality of rolled products and the service life of the equipment. In the prior art, Chinese utility model patent CN220461727U discloses a self-lubricating roll. This roll achieves self-lubrication during operation through internal structures such as a pressure head, oil outlet pipe, spring, and oil stop sleeve, which to some extent solves the problems of cumbersome and space-consuming traditional manual lubrication. However, in practical applications, the following key drawbacks still exist:

[0003] The lubrication device relies on a single oil outlet channel and oil supply groove, which makes it impossible for the lubricating oil to evenly cover the entire working surface of the roll, easily leading to local wear or uneven lubrication, affecting the quality of the rolled product; in addition, it uses multiple springs (such as large springs and small springs) and sliding sealing components, which makes the structure cumbersome and prone to failure due to spring fatigue or seal wear, resulting in high maintenance costs.

[0004] To address the aforementioned problems, this invention proposes a self-lubricating roll with a simplified structure and improved lubrication uniformity. Utility Model Content

[0005] This invention proposes a self-lubricating roll structure, which effectively avoids the problem of local accumulation or uneven distribution of lubricating oil through oil guiding channels, oil equalization grooves and elastic diaphragm valves, and greatly improves the uniformity of lubrication.

[0006] This invention is implemented as follows: a self-lubricating roll structure includes a roll body, which comprises a roll shaft, a roll neck, and a shaft end. The roll neck is provided with an oil filling port. The roll shaft has an oil storage cavity inside, which is a cylindrical through hole extending along the internal axis of the roll shaft and is connected to the oil filling port. The roll shaft has a plurality of oil guiding channels, which are evenly distributed along the circumference of the roll shaft. The inlet of each oil guiding channel is connected to the oil storage cavity, and the outlet is located on the outer circumferential surface of the roll shaft. A replaceable throttling sleeve is provided at the inlet of each oil guiding channel. A one-way valve is provided at the outlet of each oil guiding channel. A plurality of oil equalization grooves are formed on the outer circumferential surface of the roll shaft, and the outlet of each oil guiding channel is located in one of the oil equalization grooves.

[0007] As a preferred embodiment of the self-lubricating roll structure of this utility model, the throttling sleeve is provided with a throttling orifice, and the flow rate of lubricating oil can be adjusted by replacing the throttling sleeve with a throttling orifice of different diameter.

[0008] As a preferred embodiment of the self-lubricating roll structure of this utility model, the one-way valve is an elastic diaphragm valve, including a valve seat and a valve plate. The valve plate opens under lubricating oil pressure and closes when there is no pressure.

[0009] As a preferred embodiment of the self-lubricating roll structure of this utility model, the oil distribution groove extends along the axial direction of the roll body and is evenly distributed circumferentially.

[0010] As a preferred embodiment of the self-lubricating roll structure of this utility model, the width of the oil distribution groove is 0.5mm to 2mm, and the depth is 0.3mm to 1mm.

[0011] As a preferred embodiment of the self-lubricating roll structure of this utility model, the oil filling port is provided with a sealing cap.

[0012] As a preferred embodiment of the self-lubricating roll structure of this utility model, the outer peripheral surface of the roll body is coated with a wear-resistant coating, which covers the oil leveling groove and the roll body substrate.

[0013] The beneficial effects of this utility model are:

[0014] 1. By designing circumferentially distributed oil guide channels and axially distributed oil grooves, the lubricating oil is evenly covered on the entire working surface of the roll body, which greatly improves the rolling quality.

[0015] 2. By setting a replaceable throttling sleeve at the inlet of the oil guide channel, the mechanical, low-cost, and highly reliable precise adjustment of the lubricating oil flow rate is achieved, enabling the rolls to flexibly adapt to different working conditions.

[0016] 3. The control components (throttle sleeve, check valve) are all simple mechanical structures with no complex movements or vulnerable parts, resulting in a low failure rate. Furthermore, the replacement of the throttle sleeve is simple and the maintenance cost is low. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This utility model Figure 1 A schematic diagram of the AA-direction structure.

[0020] Figure 3 This is a schematic diagram of the oil guide channel and throttling sleeve of this utility model.

[0021] Figure 4 This is a schematic diagram of the oil guide channel and one-way valve of this utility model.

[0022] Figure 5 This utility model Figure 1 A schematic diagram of the BB-oriented structure.

[0023] The markings in the diagram are: 1. Roll body; 2. Roll body; 3. Roll neck; 4. Shaft head; 5. Oil filling port; 6. Oil storage chamber; 7. Oil guide channel; 8. Throttling sleeve; 9. Check valve; 10. Oil equalization groove; 11. Valve seat; 12. Valve plate; 13. Sealing cover; 14. Wear-resistant coating. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0025] Please see Figure 1-5 A self-lubricating roll structure includes a roll body 1, which includes a roll body 2, a roll neck 3, and a shaft head 4. The roll neck 3 is provided with an oil filling port 5. The roll body 2 has an oil storage cavity 6 inside, which is a cylindrical through hole extending along the internal axis of the roll body 2 and is connected to the oil filling port 5. The roll body 2 is provided with a plurality of oil guiding channels 7, which are evenly distributed along the circumference of the roll body 2. The inlet of the oil guiding channel 7 is connected to the oil storage cavity 6, and the outlet is located on the outer circumferential surface of the roll body 2. A one-way valve 9 is provided at the outlet of the oil guiding channel 7. A plurality of oil equalization grooves 10 are opened on the outer circumferential surface of the roll body 2, and the outlet of the oil guiding channel 7 is located in the oil equalization groove 10.

[0026] In this embodiment: when the roll body 1 starts to rotate, centrifugal force causes the lubricating oil in the oil storage chamber 6 to be thrown towards the circumferentially evenly distributed oil guide channels 7. The lubricating oil first flows through the replaceable throttling sleeve 8 installed at the inlet of the oil guide channel 7, and the flow rate is controlled through its throttling orifice. Then, pressure is formed in the oil guide channel 7 and pushes open the valve plate 12 of the one-way valve 9 located at its outlet. The lubricating oil then flows into the oil equalization groove 10 opened on the outer circumferential surface of the roll body 2. Subsequently, under the combined action of centrifugal force and the contact between the roll and the workpiece, the lubricating oil in the oil equalization groove 10 is evenly coated onto the entire working surface of the roll body 2 protected by the wear-resistant coating 14 (the oil equalization groove 10 is a channel arranged radially along the roll body 2), forming a continuous and uniform lubricating film. The sealing cap 13 of the oil filling port 5 and the one-way valve 9 together constitute a sealing system, which effectively prevents the intrusion of external impurities and the leakage of lubricating oil when the machine stops.

[0027] As a technical optimization of this utility model, the throttling sleeve 8 is provided with a throttling orifice, and the flow rate of lubricating oil can be adjusted by replacing the throttling sleeve 8 with a throttling orifice of different diameter.

[0028] In this embodiment, the flow rate is adjusted by replacing the throttling sleeve 8 with different orifice diameters, providing a low-cost, highly reliable, and flexible purely mechanical flow rate adjustment scheme. This allows the rolls to precisely adapt to different rolling conditions (speed, load) by replacing standard parts, thus optimizing lubrication efficiency.

[0029] As a technical optimization of this utility model, the one-way valve 9 is an elastic diaphragm valve, including a valve seat 11 and a valve plate 12. The valve plate 12 opens under lubricating oil pressure and closes when there is no pressure.

[0030] In this embodiment, the opening and closing are controlled by the pressure of the lubricating oil itself, which is fast-responding, reliable in sealing, and has no complicated springs and sliding parts, thus reducing the failure rate and maintenance costs.

[0031] As a technical optimization of this utility model, the oil leveling groove 10 extends along the axial direction of the roll body 1 and is evenly distributed along the circumference.

[0032] In this embodiment, the lubricating oil is ensured to spread fully and evenly along the axial direction of the roll, thereby covering the entire working surface of the roll body 2 and effectively avoiding local lubrication blind spots.

[0033] As a technical optimization of this utility model, the width of the oil equalization tank 10 is 0.5mm to 2mm, and the depth is 0.3mm to 1mm.

[0034] In this embodiment, the size range of the oil distribution groove 10 ensures that the oil distribution groove 10 can effectively store and diffuse sufficient lubricating oil, without significantly weakening the structural strength of the roll body 2 or affecting the surface quality of the rolled piece due to excessive size.

[0035] As a technical optimization of this utility model, the oil filling port 5 is provided with a sealing cap 13.

[0036] In this embodiment, the sealing cap 13 can prevent external contaminants (such as dust and moisture) from entering the oil storage chamber 6 and contaminating the lubricating oil, while avoiding lubricating oil leakage, thus ensuring the cleanliness and long-term effective operation of the lubrication system.

[0037] As a technical optimization of this utility model, the outer peripheral surface of the roller body 2 is coated with a wear-resistant coating 14, which covers the oil leveling groove 10 and the roller body 2 substrate.

[0038] In this embodiment: A wear-resistant coating 14 is coated on the outer peripheral surface of the roll body 2, and the wear-resistant coating 14 covers the oil leveling groove 10 and the base of the roll body 2, which can significantly improve the wear resistance of the roll surface; during the operation of the roll, it can effectively resist the friction and wear between the workpiece and the roll surface, extend the service life of the roll, reduce the replacement frequency of the roll, reduce production costs, and avoid lubricating oil leakage caused by wear of the oil leveling groove.

[0039] Working principle and usage process of this utility model:

[0040] Open the sealing cap 13 of the oil filling port 5 on the roll neck 3, add lubricating oil into the oil storage chamber 6, and then tighten the sealing cap 13 to ensure system sealing; the roll body 1 begins to rotate, and the centrifugal force generated drives the lubricating oil in the oil storage chamber 6 into the radially evenly distributed oil guide channel 7; the lubricating oil first flows through the throttling orifice of the throttling sleeve 8 in the oil guide channel 7, and its flow rate is determined by the orifice diameter of the pre-selected throttling sleeve 8, thereby realizing on-demand oil supply; the throttled lubricating oil accumulates pressure in the oil guide channel 7, and when the pressure... When the force exceeds the closing force of the valve plate 12 of the one-way valve 9, the valve plate 12 is opened, and the lubricating oil is released into the oil distribution groove 10 on the surface of the roll body 2. The lubricating oil entering the oil distribution groove 10 spreads axially under the action of centrifugal force and is evenly carried to the working surface of the roll body 2 covered with the wear-resistant coating 14, effectively lubricating the rolling contact area. When the roll body 1 stops rotating, the centrifugal force disappears, the oil pressure in the oil guide channel 7 drops, and the valve plate 12 of the one-way valve 9 returns to its closed position under its own elastic action, cutting off the oil circuit and preventing contamination and leakage.

[0041] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0042] However, the above are merely specific embodiments of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A self-lubricating roll structure, comprising a roll body (1), the roll body (1) comprising a roll shaft (2), a roll neck (3) and a shaft end (4), the roll neck (3) being provided with an oiling port (5), characterized in that: The roller body (2) is provided with an oil storage cavity (6), which is a cylindrical through hole extending along the inner axis of the roller body (2). The oil storage cavity (6) is connected to the oil filling port (5). The roller body (2) is provided with several oil guiding channels (7), which are evenly distributed along the circumference of the roller body (2). The inlet of the oil guiding channel (7) is connected to the oil storage cavity (6), and the outlet is located on the outer circumferential surface of the roller body (2). A replaceable throttling sleeve (8) is provided at the inlet of the oil guiding channel (7). A one-way valve (9) is provided at the outlet of the oil guiding channel (7). Several oil equalization grooves (10) are opened on the outer circumferential surface of the roller body (2), and the outlet of the oil guiding channel (7) is located in the oil equalization groove (10).

2. The self-lubricating roll structure according to claim 1, characterized in that: The throttling sleeve (8) is provided with a throttling orifice, and the flow rate of lubricating oil can be adjusted by replacing the throttling sleeve (8) with a throttling orifice of different diameter.

3. The self-lubricating roll structure according to claim 1, characterized in that: The one-way valve (9) is an elastic diaphragm valve, including a valve seat (11) and a valve plate (12). The valve plate (12) opens under lubricating oil pressure and closes when there is no pressure.

4. The self-lubricating roll structure according to claim 1, characterized in that: The oil distribution groove (10) extends along the axial direction of the roll body (1) and is evenly distributed circumferentially.

5. The self-lubricating roll structure according to claim 1, characterized in that: The oil equalization tank (10) has a width of 0.5 mm to 2 mm and a depth of 0.3 mm to 1 mm.

6. The self-lubricating roll structure according to claim 1, characterized in that: The oil filling port (5) is equipped with a sealing cap (13).

7. The self-lubricating roll structure according to claim 1, characterized in that: The outer peripheral surface of the roller body (2) is coated with a wear-resistant coating (14), which covers the oil leveling groove (10) and the roller body (2) substrate.

Images