Edge baffle device of electrostatic oiling machine
By designing an edge baffle device in the electrostatic oiling machine and using a detection module and control system to precisely control the position of the baffle, the problem of excessive oiling at the edge of the strip was solved, and the uniformity of oiling and the reliability of the equipment were achieved.
Patent Information
- Application Number
- CN202512053753.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-02-10
AI Technical Summary
Existing electrostatic oiling machines tend to apply too much oil to the edge areas of the strip, resulting in poor oiling uniformity. Furthermore, existing control methods are difficult to achieve precise control, which can easily lead to scratches caused by the contact between the baffle and the strip.
An edge baffle device for an electrostatic oiling machine is designed, including first and second adjusting baffles, an edge baffle moving structure, a control system, a strip edge detection module, and a baffle origin detection module. By detecting the strip edge information and spacing information, the position of the baffle is precisely controlled to achieve uniformity of the edge oiling amount.
It achieves uniform control of the amount of oil applied to the edges, avoids scratches caused by contact between the baffle and the strip, and improves the operational reliability and production efficiency of the oiling machine.
Smart Images
Figure CN121490919A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of electrostatic oiling machine technology for surface treatment lines, and more particularly to a side baffle device for an electrostatic oiling machine. Background Technology
[0002] The electrostatic oiling machine on the surface treatment line of the rolling mill utilizes a high-voltage electrostatic field to achieve fine atomization and directional adsorption of oil. It is an efficient solution to improve oiling quality, reduce oil consumption, and meet environmental protection requirements. It is especially suitable for high-speed metal strip production lines with stringent requirements for oiling uniformity and oil film thickness control.
[0003] However, due to the "edge effect" of the electrostatic field, the electric field lines of the electrostatic field will bend and concentrate from the flat surface to the edge in the edge area of the strip. The charged oil mist is attracted by the dense electric field lines and preferentially adsorbs to the edge, resulting in thicker oil film. During use, it was detected that the amount of oil applied to the edge was always higher than the normal value by about 150%, which could not meet the increasingly higher requirements for oil coating uniformity.
[0004] To address the issue of excessive oil application at the strip edges, an edge baffle device was added. The control requirement for the edge baffle is to maintain a gap of approximately 20mm between it and the running strip. Due to issues with the roller system installation accuracy, the center of the incoming strip at the oiling machine typically does not coincide with the center of the oiling machine baffle, and their positions change irregularly. Conventional control methods result in inconsistent gaps between the baffle and the strip on both sides, and may even cause contact between the baffle and the strip, resulting in scratches on the strip surface.
[0005] Existing methods often yield unsatisfactory results, and some approaches are difficult to implement and adjust. For example, reducing the blade voltage can alleviate the problem of excessive oil application at the edges, but it cannot eliminate it completely; independent oil quantity control for edge nozzles is difficult to implement and complex to control; the strip speed adjustment range is limited, which is not allowed by the process; the conductivity of the oil is related to the type and characteristics of the oil, and specific materials must be selected with specific oils, which has great limitations.
[0006] Manual control of the baffle relies heavily on human operation. Improper operation can easily lead to problems such as excessive oil application on the edges and scratches caused by the baffle contacting the strip. Ordinary position control suffers from uneven edge clearance due to changes in strip position, also resulting in scratches caused by the baffle contacting the strip. Summary of the Invention
[0007] The purpose of this invention is to provide a side baffle device for an electrostatic oiling machine, which solves the problem of controlling the gap between the side baffle and the strip of the oiling machine.
[0008] To address the aforementioned technical problems, this invention provides an edge baffle device for an electrostatic oiling machine, comprising an oiling machine body, a first adjusting baffle disposed on a first side of the material receiving area of the oiling machine body, a second adjusting baffle disposed on a second side of the material receiving area, an edge baffle moving structure connected to the first adjusting baffle and the second adjusting baffle, a control system connected to the edge baffle moving structure, a strip edge detection module for detecting strip edge information entering the material receiving area, and a baffle origin detection module for detecting the spacing information between the first adjusting baffle, the second adjusting baffle and the strip entering the material receiving area. The control system controls the positions of the first adjusting baffle and the second adjusting baffle through the edge baffle moving structure according to the strip spacing information and a predetermined oiling gap.
[0009] The first and second adjusting baffles are made of aluminum alloy or stainless steel.
[0010] The first adjusting baffle and the second adjusting baffle are of equal length, and their ends are flush.
[0011] The side baffle moving structure includes a first baffle moving unit disposed on the operating side and a second baffle moving unit disposed on the transmission side. The first baffle moving unit is connected to the first adjusting baffle and is used to drive the first adjusting baffle to move. The second baffle moving unit is connected to the second adjusting baffle and is used to drive the second adjusting baffle to move.
[0012] The first baffle moving unit and the second baffle moving unit include a drive motor, a ball screw and a coupling. The coupling is used to install the drive motor and the ball screw, and the output end of the drive motor is coaxial with the ball screw. It is used to drive the first adjusting baffle and the second adjusting baffle to move by driving the ball screw to rotate.
[0013] It also includes a slide rail disposed on the upper surface of the oiling machine body to limit the moving direction of the first adjusting baffle and the second adjusting baffle.
[0014] The drive motor is either a servo motor or a stepper motor.
[0015] The control system includes a machine train PLC control unit, a baffle PLC control unit, a motor driver, a baffle origin detection switch, and a strip edge detection switch. The baffle origin detection switch controls the baffle origin detection module to detect the spacing information between the first adjusting baffle, the second adjusting baffle, and the strip entering the material receiving area. The strip edge detection switch controls the strip edge detection module to detect the edge information of the strip entering the material receiving area. The baffle PLC control unit controls the side baffle moving structure to drive the first adjusting baffle and the second adjusting baffle to move a certain distance via the motor driver. The machine train PLC control unit controls the oiling machine body to perform oiling operations.
[0016] The system also includes a manual control unit and a mode switching unit connected to the control system. The manual control unit is used to manually control the positions of the first adjustment baffle and the second adjustment baffle. The mode switching unit is used to control the current movement control mode of the first adjustment baffle and the second adjustment baffle to be either the automatic control mode executed by the control system or the manual control mode executed by the manual control unit.
[0017] It also includes a display system connected to the control system, used to display the current operating mode corresponding to the mode switching unit, the strip spacing information, and the predetermined oiling gap.
[0018] The side baffle device for the electrostatic oiling machine provided in this embodiment of the invention has the following advantages compared with the prior art:
[0019] The electrostatic oiling machine side baffle device provided in this embodiment of the invention has a first adjusting baffle set on the first side of the material receiving area of the oiling machine body, and a second adjusting baffle on the second side of the material receiving area. The first adjusting baffle and the second adjusting baffle are connected to the side baffle moving structure and the control system. The strip edge detection module detects the edge information of the strip entering the material receiving area, and the baffle origin detection module detects the spacing information between the first adjusting baffle, the second adjusting baffle and the strip entering the material receiving area. Finally, the control system controls the position of the first adjusting baffle and the second adjusting baffle through the side baffle moving structure according to the strip spacing information and the predetermined oiling gap, so as to achieve precise control of the side baffle gap and ensure the uniformity of the oiling amount. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 A schematic diagram of the overall connection structure of an embodiment of the side baffle device for an electrostatic oiling machine provided by the present invention;
[0022] Among them, 10 is the oiling machine body, 20 is the material receiving area, 31 is the first adjusting baffle, 32 is the second adjusting baffle, 41 is the first baffle moving unit, and 42 is the second baffle moving unit. Detailed Implementation
[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described 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.
[0024] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the overall connection structure of an embodiment of the side baffle device for an electrostatic oiling machine provided by the present invention.
[0025] In one specific embodiment, the electrostatic oiling machine side baffle device includes an oiling machine body 10, a first adjusting baffle 31 disposed on a first side of the material receiving area 20 of the oiling machine body 10, a second adjusting baffle 32 disposed on a second side of the material receiving area 20, a side baffle moving structure connected to the first adjusting baffle 31 and the second adjusting baffle 32, a control system connected to the side baffle moving structure, a strip edge detection module for detecting strip edge information entering the material receiving area 20, and a baffle origin detection module for detecting the spacing information between the first adjusting baffle 31, the second adjusting baffle 32 and the strip entering the material receiving area 20. The control system is used to control the positions of the first adjusting baffle 31 and the second adjusting baffle 32 through the side baffle moving structure according to the strip spacing information and a predetermined oiling gap.
[0026] A first adjusting baffle 31 is set on the first side of the material receiving area 20 of the oiling machine body 10, and a second adjusting baffle 32 is set on the second side of the material receiving area 20. The first adjusting baffle 31 and the second adjusting baffle 32 are connected to the side baffle moving structure and the control system. The edge information of the strip entering the material receiving area 20 is detected by the strip edge detection module, and the spacing information between the first adjusting baffle 31, the second adjusting baffle 32 and the strip entering the material receiving area 20 is detected by the baffle origin detection module. Finally, the control system controls the position of the first adjusting baffle 31 and the second adjusting baffle 32 through the side baffle moving structure according to the strip spacing information and the predetermined oiling gap, so as to achieve precise control of the side baffle gap and ensure the uniformity of the oiling amount.
[0027] This application does not limit the material or size of the first adjusting baffle 31 and the second adjusting baffle 32. The first adjusting baffle 31 and the second adjusting baffle 32 can be aluminum alloy baffles, stainless steel baffles, or adjusting baffles of other materials. The material, thickness, length and other parameters of the first adjusting baffle 31 and the second adjusting baffle 32 can be equal or unequal.
[0028] Preferably, the lengths of the first adjusting baffle 31 and the second adjusting baffle 32 are equal, and the two ends of the first adjusting baffle 31 and the second adjusting baffle 32 are flush.
[0029] By making the lengths of the first adjusting baffle 31 and the second adjusting baffle 32 equal and their ends flush, a symmetrical distribution about the strip is achieved, and the oiling gap on both sides is adjusted synchronously, thereby improving the efficiency of the baffles.
[0030] In this application, the position of the baffles is moved by the side baffle moving structure. There are no limitations on the driving method and driving structure. The adjustment can be independent or as a whole. Independent adjustment means that each baffle is driven by an independent driving mechanism. As a whole, the distance between the two baffles is first adjusted according to the distance between the baffles, the width of the incoming material, the oiling gap and other parameters. The distance is the sum of the width of the incoming material and the two oiling gaps. Then the whole drive is performed to ensure that the oiling gaps on both sides are equal, or other driving methods are used.
[0031] In one embodiment, to improve the efficiency of the baffle drive and the convenience of control, the side baffle moving structure includes a first baffle moving unit 41 disposed on the operating side and a second baffle moving unit 42 disposed on the transmission side. The first baffle moving unit 41 is connected to the first adjusting baffle 31 and is used to drive the first adjusting baffle 31 to move. The second baffle moving unit 42 is connected to the second adjusting baffle 32 and is used to drive the second adjusting baffle 32 to move.
[0032] By setting moving units on both the first and second baffles and controlling their movement separately, the oil gap distance on both sides can be measured separately, improving the accuracy of operation. Even if one side is damaged, it is only necessary to ensure that the distance on the other side is equal to the distance on the damaged side, thus improving the reliability of operation.
[0033] This application does not limit the structure, connection method, and driving method of the first baffle moving unit 41 and the second baffle moving unit 42. The two structures can be the same or different. In order to improve the reliability and consistency of operation, the two structures, connection methods, and control methods are generally completely the same, which can reduce the difficulty of control.
[0034] In one embodiment, the first baffle moving unit 41 and the second baffle moving unit 42 include a drive motor, a ball screw, and a coupling. The coupling is used to mount the drive motor and the ball screw, and the output end of the drive motor is coaxial with the ball screw. It is used to drive the first adjusting baffle 31 and the second adjusting baffle 32 to move by driving the ball screw to rotate.
[0035] By using a drive motor and ball screw structure for driving, control accuracy and operational reliability can be improved.
[0036] This application includes, but is not limited to, the above-described methods. Other methods, such as multiple gear structures, can also be used to achieve high-precision adjustment of the gap between the two.
[0037] Due to the uncertainty of the incoming material's entry position, frequent adjustments to the baffle are required. In order to reduce damage to the bottom structure of the baffle and improve the efficiency and accuracy of adjustment, in one embodiment, the side baffle device of the electrostatic oiling machine further includes a slide rail disposed on the upper surface of the oiling machine body 10 for limiting the moving direction of the first adjusting baffle 31 and the second adjusting baffle 32.
[0038] By setting a slide rail at the bottom of the baffle, the position of the baffle can be adjusted with a smaller driving force, which minimizes damage to the bottom during the movement of the baffle and improves the reliability of use. At the same time, due to the reduced friction, the adjustment accuracy and speed can be improved, thus increasing the adjustment sensitivity of the device.
[0039] This application does not limit the type or precision of the drive motor, which may be a servo motor, a stepper motor, or other types of motors.
[0040] This application employs a control system to control related components. The structure of the control system is not limited. In one embodiment, the control system includes a machine train PLC control unit, a baffle PLC control unit, a motor driver, a baffle origin detection switch, and a strip edge detection switch. The baffle origin detection switch controls the baffle origin detection module to detect the spacing information between the first adjusting baffle 31, the second adjusting baffle 32, and the strip entering the material receiving area 20. The strip edge detection switch controls the strip edge detection module to detect the edge information of the strip entering the material receiving area 20. The baffle PLC control unit controls the movement distance of the edge baffle moving structure via the motor driver, driving the first adjusting baffle 31 and the second adjusting baffle 32. The machine train PLC control unit controls the oiling machine body 10 to perform an oiling operation.
[0041] By setting up a PLC control unit for the machine frame, a PLC control unit for the baffle, a motor driver, a baffle origin detection switch, and a strip edge detection switch, the oiling machine body 10, the baffle, and related detection modules are controlled respectively, realizing the automated control of all modules of the device and improving control efficiency.
[0042] The control system in this application includes, but is not limited to, the control unit described above. Other control units may also be used, and this application does not limit them.
[0043] To further enhance the flexibility of the device, in one embodiment, the side baffle device of the electrostatic oiling machine also includes a manual control unit and a mode switching unit connected to the control system. The manual control unit is used to manually control the positions of the first adjustment baffle 31 and the second adjustment baffle 32, and the mode switching unit is used to control the current movement control mode of the first adjustment baffle 31 and the second adjustment baffle 32 to be either the automatic control mode executed by the control system or the manual control mode executed by the manual control unit.
[0044] By employing a manual control unit and a mode switching unit, the system can freely switch between automatic and manual control, ensuring that the equipment can still be used normally even if the automatic control mode malfunctions, thus achieving both flexibility and reliability in control.
[0045] This application does not limit the control method of the mode switching unit. It can be controlled by external mechanical circuits or by circuits, etc.
[0046] To further improve management efficiency, in one embodiment, the side baffle device of the electrostatic oiling machine further includes a display system connected to the control system, used to display the current operating mode corresponding to the mode switching unit, the strip spacing information, and the predetermined oiling gap.
[0047] By setting up a display system to show the current operating status of the equipment and the data monitoring information obtained by the sensors, the visibility of the operating data is improved, and management efficiency is increased.
[0048] In addition, this application can also use a communication module for data transmission, such as a wireless unit, such as a 4G module, a 5G module, or a WiFi module, for data transmission and remote control, thereby improving control efficiency.
[0049] In one embodiment, the edge baffle device of the electrostatic oiling machine fundamentally solves the problem of excessive oil application at the edges by adding an edge baffle device and achieving high-precision automatic edge-tracking controllable adjustment. It is adaptable to different blade voltages, strip speeds, and oil types. The control method is simple and reliable.
[0050] The side baffle moving device structure includes a first baffle, a second baffle (made of aluminum alloy or stainless steel), a lead screw and connecting and fixing mechanical mechanism, a drive motor, automatic edge inspection, operation buttons and HMI interface, a PLC control system and a motor driver. The side baffle moving structure is symmetrically distributed on the operation side and the transmission side. The ball screw drives the baffle to move left and right. The power is a stepper motor, which is directly connected to the ball screw through a coupling.
[0051] The control system includes a machine train control PLC, a baffle control PLC, a stepper motor driver, a stepper motor, a baffle origin detection switch, and a strip edge detection switch.
[0052] The automatic control method for the side baffle is as follows:
[0053] The baffle stepper motor is controlled by a PLC. The PLC outputs high-speed pulses and direction pulses to control the stepper motor driver, thereby controlling the position and speed of the stepper motor. The baffle features manual jog speed control, automatic position control based on strip width, set edge gap, and center offset, and automatic edge tracking control of the baffle and strip edge gap.
[0054] The side baffle moving device structure is symmetrically distributed on the operating side and the transmission side, and the gap between the baffles on both sides and the incoming material can be adjusted independently.
[0055] The edge baffle control features manual jog speed control, automatic position control based on strip width and set edge gap and center offset, and automatic edge patrol control of the baffle and strip edge gap.
[0056] By adding side baffles, the amount of oil applied is ensured to be uniform and stable. At the same time, through digital control such as human-machine interface, PLC controller, and stepper motor driver, the technology is mature, the performance is stable, the control accuracy is high, and the response is fast.
[0057] Because strip material may exhibit irregularities such as "deviation" or "sickle bend" on continuous production lines, its centerline may not coincide with the production line centerline. The symmetrical and independently controlled structure allows the system to treat "operating side clearance" and "drive side clearance" as two independent control variables. Even if the strip is not on the centerline, the system can independently adjust the side baffles to ensure consistent oiling clearance on both sides, thus avoiding excessive or insufficient oiling on one side due to changes in strip position.
[0058] A "machine train control PLC" is used as the upper-level management layer, responsible for macro-level instructions (such as width setting); a "baffle control PLC" acts as the lower-level execution layer, responsible for real-time closed-loop control. This is a typical hierarchical, distributed control architecture. The stepper motor has precise position control characteristics, and combined with the "origin detection switch" to provide an absolute position reference, eliminating accumulated errors. The "strip edge detection switch" provides real-time feedback while reducing investment costs.
[0059] It offers three different levels of intelligent control modes: "manual adjustment," "preset automatic," and "sensory adaptive," covering all scenarios from equipment maintenance and routine production to handling abnormal operating conditions. It meets the requirements of high-precision fully automated production while retaining the flexibility of manual intervention, and possesses the ability to sense and adapt to dynamic changes (strip oscillation) on the production line. It achieves rapid and accurate specification switching, improving production efficiency. It eliminates the time delays and operational errors caused by manual measurement and adjustment, making it particularly suitable for multi-variety, small-batch production. It fundamentally solves the problem of uneven edge coating caused by strip serpentine movement or oscillation. It represents a leap from "static open-loop control" to "dynamic closed-loop control," achieving the most accurate and stable edge coating control effect under current technological conditions.
[0060] In summary, the side baffle device for the electrostatic oiling machine provided in this embodiment of the invention features a first adjusting baffle on the first side of the material receiving area of the oiling machine body, and a second adjusting baffle on the second side of the material receiving area. The first and second adjusting baffles are connected to a side baffle moving structure and a control system. A strip edge detection module detects the edge information of the strip entering the material receiving area, and a baffle origin detection module detects the spacing information between the first and second adjusting baffles and the strip entering the material receiving area. Finally, the control system controls the positions of the first and second adjusting baffles via the side baffle moving structure based on the strip spacing information and a predetermined oiling gap, achieving precise control of the side baffle gap and ensuring the uniformity of the oiling amount.
[0061] The side baffle device for the electrostatic oiling machine provided by this invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.
Claims
1. A side baffle device for an electrostatic oiling machine, characterized in that, The system includes an oiling machine body, a first adjusting baffle disposed on a first side of the material receiving area of the oiling machine body, a second adjusting baffle disposed on a second side of the material receiving area, a side baffle moving structure connected to the first adjusting baffle and the second adjusting baffle, a control system connected to the side baffle moving structure, a strip edge detection module for detecting strip edge information entering the material receiving area, and a baffle origin detection module for detecting the spacing information between the first adjusting baffle, the second adjusting baffle and the strip entering the material receiving area. The control system is used to control the positions of the first adjusting baffle and the second adjusting baffle through the side baffle moving structure according to the strip spacing information and a predetermined oiling gap.
2. The side baffle device of the electrostatic oiling machine as described in claim 1, characterized in that, The first and second adjustment baffles are made of aluminum alloy or stainless steel.
3. The side baffle device of the electrostatic oiling machine as described in claim 2, characterized in that, The first adjusting baffle and the second adjusting baffle are of equal length, and their ends are flush.
4. The side baffle device for the electrostatic oiling machine as described in any one of claims 1-3, characterized in that, The side baffle moving structure includes a first baffle moving unit disposed on the operating side and a second baffle moving unit disposed on the transmission side. The first baffle moving unit is connected to the first adjusting baffle and is used to drive the first adjusting baffle to move. The second baffle moving unit is connected to the second adjusting baffle and is used to drive the second adjusting baffle to move.
5. The side baffle device for the electrostatic oiling machine as described in claim 4, characterized in that, The first baffle moving unit and the second baffle moving unit include a drive motor, a ball screw and a coupling. The coupling is used to install the drive motor and the ball screw, and the output end of the drive motor is coaxial with the ball screw. It is used to drive the first adjusting baffle and the second adjusting baffle to move by driving the ball screw to rotate.
6. The side baffle device for the electrostatic oiling machine as described in claim 5, characterized in that, It also includes a slide rail disposed on the upper surface of the oiling machine body to limit the movement direction of the first adjusting baffle and the second adjusting baffle.
7. The side baffle device for the electrostatic oiling machine as described in claim 6, characterized in that, The drive motor is a servo motor or a stepper motor.
8. The side baffle device for the electrostatic oiling machine as described in claim 1, characterized in that, The control system includes a machine train PLC control unit, a baffle PLC control unit, a motor driver, a baffle origin detection switch, and a strip edge detection switch. The baffle origin detection switch controls the baffle origin detection module to detect the spacing information between the first adjusting baffle, the second adjusting baffle, and the strip entering the material receiving area. The strip edge detection switch controls the strip edge detection module to detect the edge information of the strip entering the material receiving area. The baffle PLC control unit controls the movement distance of the first adjusting baffle and the second adjusting baffle through the motor driver. The machine train PLC control unit controls the oiling machine body to perform oiling operations.
9. The side baffle device for the electrostatic oiling machine as described in claim 1, characterized in that, It also includes a manual control unit and a mode switching unit connected to the control system. The manual control unit is used to manually control the positions of the first adjustment baffle and the second adjustment baffle. The mode switching unit is used to control the current movement control mode of the first adjustment baffle and the second adjustment baffle to be the automatic control mode executed by the control system or the manual control mode executed by the manual control unit.
10. The side baffle device for the electrostatic oiling machine as described in claim 9, characterized in that, It also includes a display system connected to the control system, used to display the current operating mode corresponding to the mode switching unit, the strip spacing information, and the predetermined oiling gap.