Device and method for purging, filtering and deoiling during rolling of metal foil

Abstract

The invention discloses a device and a method for purging, filtering and deoiling during metal foil rolling, and the device comprises a mechanical part and a control system, the mechanical part comprises an upper tension roller, a lower tension roller, an upper tension motor, a lower tension motor, an upper tension speed reducer, a lower tension speed reducer, an upper tension coupler, a lower tension coupler, an upper air knife, a lower air knife, an upper splash-proof oil baffle plate, a lower splash-proof oil baffle plate, an upper negative pressure oil gas filtering device and a lower negative pressure oil gas filtering device. By means of the metal foil blowing and deoiling device, the potential risks of blowing wrinkles, blowing floating and the like during metal foil blowing and deoiling can be effectively reduced and eliminated, large-pressure and large-flow airflow can be adopted for deoiling of the foil, the better deoiling effect is achieved, and the production efficiency and the product quality of the metal foil are improved.

Description

Technical Field

[0001] This application relates to the processing of thin metal strips, and more particularly to a purging, filtering and degreasing device and method for rolling metal foil. Background Technology

[0002] In recent years, with the development of industries such as low-altitude economy, intelligent robots, wearable devices, electric vehicles, and consumer electronics, the market demand for high-quality, low-cost metal foils has risen sharply. In the rolling production of metal foils, rolling oil is typically used for process lubrication and cooling, resulting in a significant amount of rolling oil residue on the foil after rolling. Excessive rolling oil residue not only affects rolling speed and reduces production efficiency but also makes the winding process prone to slippage, affecting winding quality and even causing defects such as creases. Too much residual oil also affects subsequent cleaning and annealing processes. Therefore, degreasing is a crucial step in foil production, and oil removal is often achieved through squeezing or blowing to remove the rolling oil from the foil.

[0003] When the shape of the metal foil is not ideal, the oil extrusion effect is relatively poor, and the degreasing of the foil becomes more dependent on the blowing effect. The degreasing effect of blowing is related to the air pressure and air volume. When there is more residual oil, a greater air pressure and air volume are required. When the foil is very thin, even a slight increase or unevenness in airflow pressure can easily cause the foil to wrinkle or drift, making the foil run unstable and leading to accidents such as strip breakage and folding. Summary of the Invention

[0004] The purpose of this invention is to provide a blowing and filtering degreasing device and method for metal foil rolling, which can effectively reduce or eliminate the potential risks of wrinkling and drifting during metal foil blowing and degreasing, and enable the foil degreasing to use high-pressure and high-flow airflow to achieve better degreasing effect, thereby improving the production efficiency and product quality of metal foil.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] This application discloses a purging and filtering oil removal device for metal foil rolling, comprising a mechanical part and a control system. The mechanical part includes an upper tension roller, a lower tension roller, an upper tension motor, a lower tension motor, an upper tension reducer, a lower tension reducer, an upper tension coupling, a lower tension coupling, an upper air knife, a lower air knife, an upper splash baffle, a lower splash baffle, an upper negative pressure oil and gas filter, and a lower negative pressure oil and gas filter. The air outlet direction of the upper and lower air knives forms an angle of 25° to 35° with the foil's forward direction. The intersection of the air outlet direction of the upper air knife and the foil is located 5° off the winding side from the top of the upper tension roller, and the intersection of the air outlet direction of the lower air knife and the foil is located 5° off the winding side directly below the lower tension roller. The control system includes measuring sensors, an operating console, an industrial computer, a PLC, and a control cabinet. The industrial computer is equipped with a WinCC-configured human-machine interface for the control system. The human-machine interface displays the diameter of the upper tension roller of the purging and filtering oil removal device. and the diameter of the lower tension roller Input field, steering roller diameter Input domain, allowable value of sensitivity coefficient for foil length variation Input field and foil length variation calculation cumulative time Input field.

[0007] Preferably, in the blowing, filtering and degreasing device for rolling the metal foil, the upper tension roller and the lower tension roller are thick-walled hollow rollers.

[0008] Preferably, in the above-mentioned blowing, filtering and degreasing device for rolling metal foil, both the upper tension motor and the lower tension motor are reversible motors.

[0009] Preferably, in the above-mentioned blowing, filtering and oil removal device during the rolling of metal foil, the upper tension reducer and the lower tension reducer are cycloidal pinwheel reducers.

[0010] Preferably, in the above-mentioned blowing, filtering and degreasing device for rolling metal foil, the upper tension coupling and the lower tension coupling are cage couplings.

[0011] Preferably, in the above-mentioned purging and filtering oil removal device during the rolling of metal foil, the splash-proof oil baffle is wavy and an oil collection trough is provided at the bottom, and the oil collection trough is connected to the oil collection tank through an oil guide pipe.

[0012] Preferably, in the above-mentioned purging and filtering oil removal device during the rolling of metal foil, the negative pressure oil and gas filtration device includes an oil suction hood, an oil suction pipe, a negative pressure pump, and oil filter cotton, wherein the oil suction hood is 3-6 mm away from the surface of the foil.

[0013] Preferably, in the above-mentioned purging and filtering degreasing device for rolling metal foil, the operating table has a two-way switch for adjusting the rolling direction.

[0014] Accordingly, a method for purging, filtering, and degreasing during the rolling of metal foil is also disclosed, comprising the following steps:

[0015] Step 1: Set basic control parameters, including the diameter of the tension roller on the purging device. and the diameter of the lower tension roller Diameter of steering rollers Allowable value of sensitivity coefficient for foil length variation Calculate the cumulative time for changes in foil length ;

[0016] Step 2: The upper support descends and the lower support rises to the working position; the rolling mill is started, the blowing air knife is opened, and the negative pressure pump of the suction device is started;

[0017] Step 3: Measure the exit foil speed , Linear speed of tension roller , lower tension roller linear speed By measuring the rotational speed of the steering roller , upper tension roller speed and the speed of the lower tension roller Calculate separately , and The calculation formula is V In the formula Speed ​​of tension roller / steering roller (m / min) Speed ​​of tension roller / steering roller (rpm) Diameter of tension roller / directing roller (mm);

[0018] Step 4: Calculate cumulative time Inner winding length The arc length of the tension roller and the arc length of the lower tension roller ,

[0019] Step 5: Adjust the winding length. Arc length of the upper tension roller The arc length of the lower tension roller Compare and determine the tension roller speed adjustment. and Increase the linear speed of the upper tension roller; if and Reduce the linear speed of the upper tension roller; if If the linear speed of the upper tension roller remains constant, and Increase the linear speed of the lower tension roller; if and Reduce the linear speed of the lower tension roller; if The linear speed of the lower tension roller remains constant;

[0020] Step Six: Determine if the pass has ended and measure the exit foil speed. ,if If the round is not finished, return to step three; if The rolling pass is now complete.

[0021] Compared with existing technologies, the advantages of this invention lie in its use of a large-diameter tension roller to evenly spread the foil on the tension roller, and then using an air knife to blow away the foil supported by the tension roller. This not only eliminates the risks of wrinkling and blowing away foil present in traditional foil blowing devices, but also allows for the use of greater air pressure and flow rate, resulting in better degreasing. Speed ​​control of the tension roller reduces relative slippage between the foil and the roller, which also helps improve the surface quality of the metal foil. The torque-limited speed control mode on the winding machine ensures stable winding tension. Using this invention not only improves the quality of the foil, but also enhances the production efficiency of the rolling mill and subsequent processes. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 The diagram shown is a schematic representation of the control system in a specific embodiment of the present invention;

[0024] Figure 2 The diagram shown is a schematic of the splash-proof oil baffle in a specific embodiment of the present invention;

[0025] Figure 3 The diagram shown is a top view of the purging, filtering, and oil removal device during the rolling of metal foil in a specific embodiment of the present invention.

[0026] Figure 4 The figure shown is a side view of the purging, filtering and degreasing device during the rolling of metal foil in a specific embodiment of the present invention;

[0027] Figure 5 The diagram shown is a schematic of a negative pressure oil and gas filtration device during metal foil rolling in a specific embodiment of the present invention.

[0028] Figure 6 The diagram shows a flowchart of the purging, filtering, and degreasing method during the rolling of metal foil in a specific embodiment of the present invention.

[0029] In the diagram: 1—Mechanical component, 2—Industrial control computer, 3—PLC, 4—Operating console, 5—Control cabinet, 6—Splash guard, 7—Oil collection tank, 8—Oil guide pipe, 9—Oil collection bucket, 10—Foil, 11—Lower tension roller, 12—Encoder 2 for measuring tension roller speed, 13—Upper tension roller, 14—Encoder 1 for measuring tension roller speed, 15—Upper oil suction cover, 16—Encoder for measuring steering roller speed, 17—Steering roller, 18—Steering reducer, 19—Drum, 20—Winding reducer, 21—Lower tension coupling, 22—Upper tension coupling, 23—Lower tension reducer, 24—Lower tension motor. 25—Upper tension motor, 26—Upper tension reducer, 27—Steering motor, 28—Encoder for measuring the speed of the take-up motor, 29—Take-up motor, 30—Lower air intake, 31—Lower air knife, 32—Lower splash guard, 33—Lower oil suction hood, 34—Upper air intake, 35—Upper splash guard, 36—Upper air knife, 37—Negative pressure pump, 38—Oil suction pipe, 39—Oil mist filter box, 40—Oil guide pipe, 41—Filter cotton. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, 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 invention based on the specific circumstances.

[0033] Combination Figure 1-6As shown, the purging, filtering, and oil removal device for metal foil rolling includes a mechanical part 1 and a control system. The mechanical part includes an upper tension roller 13, a lower tension roller 11, an upper tension motor 25, a lower tension motor 24, an upper tension reducer 26, a lower tension reducer 23, an upper tension coupling 22, a lower tension coupling 21, an upper air knife 36, a lower air knife 31, an upper splash guard 35, a lower splash guard 32, an upper negative pressure oil-gas filter, and a lower negative pressure oil-gas filter. The tension rollers are thick-walled hollow rollers, ensuring sufficient rigidity while minimizing rotational inertia, meeting the need for rapid response in speed control. All drive motors are reversible motors. The reducers are cycloidal pinwheel reducers, providing smooth transmission and saving installation space. The couplings are cage couplings, ensuring uniform and smooth transmission. The air knife's outlet direction forms a 25°~35° angle with the foil material's forward direction, ensuring optimal blowing effect. The intersection of the upper air knife's outlet direction and the foil material is located 5° off the winding side from the top of the upper tension roller, while the intersection of the lower air knife's outlet direction and the foil material is located 5° off the winding side directly below the lower tension roller. The foil material at the blowing position is wound around the tension roller, avoiding risks such as wrinkling or drifting. The upper splash guard plate forms the same angle with the foil as the upper air knife, and is located above the upper air knife, close to it. It is used to prevent oil droplets and oil mist blown up by the blown-up material from falling back onto the foil after the blown-up material. The splash guard plate 6 (including the upper splash guard plate 35 and the lower splash guard plate 32) is wavy to facilitate the collection of splashed oil droplets. There is an oil collection trough 7 at the bottom, which is connected to the oil collection tank 9 through the oil guide pipe 8. The lower splash guard plate has the same structure as the upper splash guard plate and is located above the lower air knife, close to it. The negative pressure oil-gas filtration device includes an oil suction hood, an air intake, an oil suction pipe 38, a negative pressure pump 37, an oil mist filter box 39, and an oil guide pipe 40. The upper part of the oil mist filter box contains filter cotton 41, which is replaced periodically. An oil storage space is reserved at the bottom. The oil guide pipe transfers the filtered rolling oil to an oil collection tank. The lower edge of the upper oil suction hood 15 is 3-6 mm from the foil surface, and the upper edge of the lower oil suction hood 33 is 3-6 mm from the lower surface of the foil. The air intake includes an upper air intake 34 and a lower air intake 30. The upper negative pressure oil-gas filtration device, the upper splash guard, and the upper air knife are mounted on the upper support; the lower negative pressure oil-gas filtration device, the lower splash guard, and the lower air knife are mounted on the upper support. Both the upper and lower supports can be raised and lowered vertically for easy tape threading. A torque-limited speed control mode is used on the winding machine to ensure stable winding tension. The winding machine includes a winding motor 29 driving a winding reducer 20 to drive a winding drum 19, and an encoder 28 for measuring the winding motor speed is provided on one side of the winding motor.

[0034] The control system includes measuring sensors, an operator console (4), an industrial computer (2), a PLC (3), and a control cabinet (5). The control system is a component of the rolling mill control system.

[0035] The measuring sensors include an encoder for measuring the speed of the tension roller and an encoder 16 for measuring the speed of the guide roller. The encoders for measuring the speed of the tension roller include an encoder for measuring the speed of the upper tension roller and an encoder for measuring the speed of the lower tension roller, respectively installed on the operating side roller ends of the upper and lower tension rollers. Their function is to measure the speed of the tension roller for tension roller speed control. The encoder for measuring the speed of the guide roller is installed on the operating side roller end of the guide roller 17. Its function is to measure the speed of the guide roller, calculate the foil speed, and use it for tension roller speed control. The measurement and calculation formula is as follows: In the formula Foil speed (m / min) The rotational speed of the steering roller (rpm) The diameter of the steering roller is (mm). The steering motor 27 is connected to the steering reducer 18 to provide power to the steering roller.

[0036] The industrial computer is equipped with a WinCC-configured human-machine interface for the control system. The interface displays the diameter of the tension roller of the purging filter oil removal device. and the diameter of the lower tension roller Input field, steering roller diameter Input domain, allowable value of sensitivity coefficient for foil length variation Input field and foil length variation calculation cumulative time Input field. The control panel has a two-way switch for adjusting the rolling direction.

[0037] In this embodiment, the rolled material is 430 stainless steel, with a thickness of 100μm and a width of 100.0mm.

[0038] The specific steps for the purging, filtering, and degreasing method during metal foil rolling are as follows:

[0039] Step 1: Set the following basic control parameters: diameter of the tension roller on the purging device. =500.0 mm, diameter of lower tension roller =500.0 mm, diameter of steering roller Allowable value of the sensitivity coefficient to changes in foil length Calculation of cumulative time for sensitivity coefficient of foil length variation ;

[0040] Step 2: The upper support descends, and the upper air knife, upper splash guard, and upper oil suction hood are in the working position; the lower support rises, and the lower air knife, lower splash guard, and lower oil suction hood are in the working position; the upper and lower air knives are turned on, and the negative pressure pumps of the upper and lower negative pressure oil and gas filtration devices are turned on; the air knife blows the residual rolling oil on the foil into an oil mist, some of the oil mist is deposited on the splash guard, gathers in the oil collection tank, and flows into the oil collection bucket through the guide pipe, and some of the oil mist is sucked into the oil suction pipe by the negative pressure pump, and is blocked by the oil absorption cotton when passing through the oil mist filter box, gathers at the bottom of the oil mist filter box, and flows into the oil collection bucket through the guide pipe;

[0041] Step 3: Measure the speed of the steering roller using an encoder. The speed of the tension roller was measured using an encoder-14. The speed of the tension roller was measured using encoder 2.12. Combined with the set parameters , , The exit foil speed was calculated separately. , Linear speed of tension roller , lower tension roller linear speed ;

[0042] Step 4: Utilize the measured instantaneous speed , and Calculate cumulative time The winding length of the internal winding machine The arc length of the tension roller The arc length of the lower tension roller .

[0043] Step 5: minus The difference and the allowable value of the sensitivity coefficient to changes in foil length Comparison, if and Increase the linear speed of the upper tension roller; if and Reduce the linear speed of the upper tension roller; if The linear speed of the upper tension roller remains constant; minus The difference and the allowable value of the sensitivity coefficient to changes in foil length Comparison, if and Increase the linear speed of the lower tension roller; if and Reduce the linear speed of the lower tension roller; if The linear speed of the lower tension roller remains constant;

[0044] Step Six: Measure the speed of the steering rollers using an encoder. Combined with the set parameters The speed of the exported foil was calculated. ;when If the round is not yet finished, return to step three; when At that time, the course ended.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A purging, filtering, and oil removal device for metal foil rolling, characterized in that, The system includes a mechanical component and a control system. The mechanical component includes an upper tension roller, a lower tension roller, an upper tension motor, a lower tension motor, an upper tension reducer, a lower tension reducer, an upper tension coupling, a lower tension coupling, an upper air knife, a lower air knife, an upper splash guard, a lower splash guard, an upper negative pressure oil-gas filter, and a lower negative pressure oil-gas filter. The air outlet direction of the upper and lower air knives forms a 25°~35° angle with the foil's forward direction. The intersection of the upper air knife's air outlet direction and the foil's direction is located 5° off the winding side from the apex of the upper tension roller. The intersection of the lower air knife's air outlet direction and the foil's direction is located 5° directly below the lower tension roller, off the winding side. The control system includes measuring sensors, an operating console, an industrial computer, a PLC, and a control cabinet. The industrial computer is equipped with a WinCC-configured human-machine interface (HMI). The HMI displays the diameter of the upper tension roller, which is part of the purging and filtering oil removal device. and the diameter of the lower tension roller Input field, steering roller diameter Input domain, allowable value of sensitivity coefficient for foil length variation Input field and foil length variation calculation cumulative time Input field.

2. The purging, filtering, and oil removal device for metal foil rolling according to claim 1, characterized in that, The upper tension roller and lower tension roller are thick-walled hollow rollers.

3. The purging, filtering, and oil removal device for metal foil rolling according to claim 1, characterized in that, Both the upper tension motor and the lower tension motor are reversible motors.

4. The purging, filtering, and oil removal device for metal foil rolling according to claim 1, characterized in that, The upper tension reducer and lower tension reducer are cycloidal pinwheel reducers.

5. The purging, filtering, and oil removal device for metal foil rolling according to claim 1, characterized in that, The upper tension coupling and the lower tension coupling are cage couplings.

6. The purging, filtering, and oil removal device for metal foil rolling according to claim 1, characterized in that, The splash guard is wavy and has an oil collection trough at the bottom, which is connected to the oil collection tank through an oil guide pipe.

7. The purging, filtering, and oil removal device for metal foil rolling according to claim 1, characterized in that, The negative pressure oil and gas filtration device includes an oil suction hood, an oil suction pipe, a negative pressure pump, and oil filter cotton. The oil suction hood is 3-6 mm away from the surface of the foil.

8. The purging, filtering, and oil removal device for metal foil rolling according to claim 1, characterized in that, The operating platform is equipped with a two-way switch for adjusting the rolling direction.

9. The method for purging, filtering, and degreasing during metal foil rolling as described in claim 1, characterized in that, The steps are as follows: Step 1: Set basic control parameters, including the diameter of the tension roller on the purging device. and the diameter of the lower tension roller Diameter of steering rollers Allowable value of sensitivity coefficient for foil length variation Calculate the cumulative time for changes in foil length ; Step 2: The upper support descends and the lower support rises to the working position; the rolling mill is started, the blowing air knife is opened, and the negative pressure pump of the suction device is started; Step 3: Measure the exit foil speed , Linear speed of tension roller , lower tension roller linear speed By measuring the rotational speed of the steering roller , upper tension roller speed and the speed of the lower tension roller Calculate separately , and The calculation formula is V In the formula Speed ​​of tension roller / steering roller (m / min) Speed ​​of tension roller / steering roller (rpm) Diameter of tension roller / directing roller (mm); Step 4: Calculate cumulative time Inner winding length The arc length of the tension roller and the arc length of the lower tension roller , Step 5: Adjust the winding length. Arc length of the upper tension roller The arc length of the lower tension roller Compare and determine the tension roller speed adjustment. and Increase the linear speed of the upper tension roller; if and Reduce the linear speed of the upper tension roller; if If the linear speed of the upper tension roller remains constant, and Increase the linear speed of the lower tension roller; if and Reduce the linear speed of the lower tension roller; if The linear speed of the lower tension roller remains constant; Step Six: Determine if the pass has ended and measure the exit foil speed. ,if If the round is not finished, return to step three; if The rolling pass is now complete.

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