Automated horizontal roller coating machine

Abstract

This utility model belongs to the field of metallurgical equipment technology and relates to an automated horizontal roller coating machine, including a transmission assembly, a C-frame, a track, a coating roller assembly, and a receiving tray. The C-frame is an integral structure, set on the track, and can move along the track from the transmission side to the operating side, with the opening of the C-frame facing the transmission side. The transmission assembly is integrated with the C-frame, arranged on the operating side of the C-frame, and moves with the C-frame. The coating roller assembly is installed in the C-frame and connected to the transmission assembly to drive the coating roller assembly to roll coat the strip steel. The receiving tray is located in the C-frame and below the coating roller assembly. This utility model achieves a breakthrough in non-stop roller changing through an innovative C-frame and offline roller changing design. Operators can change coating rollers in the standby position without disturbing the strip steel operation, avoiding the inefficiency of traditional roller changing that requires machine shutdown.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment technology and relates to an automated horizontal roller coating machine. Background Technology

[0002] In the field of cold-rolled strip steel processing, the roll coating machine, as a key piece of equipment, has been widely used in many important fields such as color coating, galvanizing, and silicon steel coating due to its significant advantages, including high film thickness control precision and strong adaptability to coating liquid viscosity. Among them, the horizontal double-sided roll coating machine is widely used in many horizontally running strip steel units due to its outstanding feature of small footprint.

[0003] Each horizontal double-sided roller coating machine is equipped with two coating heads: an upper coating head positioned above the strip steel, specifically responsible for coating the upper surface; and a lower coating head located below the strip steel, used for coating the lower surface. Each coating head has an independent coating tray for picking up paint, and each coating roller has its own dedicated roller drive system, enabling precise control of roller speed and coating thickness. However, in actual production, roller coating machines face the problem of easily worn coating rollers, requiring frequent switching between working and roller-changing states. The structural characteristics of horizontal roller coating machines are that the upper coating head is above the steel strip, and the lower coating head is below the steel strip, and the upper and lower coating rollers of ordinary roller coating machines are fixed and not movable. Currently, the conventional roller-changing operation procedure is as follows: the operator first switches the equipment to roller-changing state, at which point the upper and lower coating heads are moved away from the steel strip, leaving sufficient safety distance; then, steel wire ropes are looped around the journals at both ends of the coating roller, and the coating roller is lifted by a crane or hoist to complete the replacement. However, this traditional roll changing method has many drawbacks. On the one hand, its efficiency is extremely low. From preparing to change the roll to completing the entire process, it requires a lot of time and manpower, seriously affecting production efficiency. On the other hand, the risk factor is extremely high. The coating roll of the upper coating head is relatively easy to operate because it is above the steel strip and there are no interfering objects around it; however, when changing the coating roll of the lower coating head, during the process of attaching the wire rope and preparing to lift it off the bearing seat, it is necessary to avoid the strip above. Throughout the entire roll changing process, personnel and the roll body are always at serious risk of being cut or bumped by the strip. To ensure personnel safety, the unit must be stopped during the roll changing period, and the strip is no longer transported, which further exacerbates the production interruption.

[0004] In summary, traditional roll changing methods for roll coaters are time-consuming, labor-intensive, and pose significant safety risks, severely hindering the further development and application of roll coaters in the cold-rolled strip steel processing field. Therefore, developing an efficient, safe, and convenient roll changing device and method for roll coaters is of significant practical importance. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an automated horizontal roller coating machine to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An automated horizontal roller coating machine includes a transmission assembly, a C-frame, a track, a paint roller assembly, and a receiving tray;

[0008] The C-frame is an integral structure, mounted on the track, and can move along the track from the transmission side to the operation side, with the opening of the C-frame facing the transmission side;

[0009] The transmission assembly is integrated with the C-frame, arranged on the operating side of the C-frame, and moves with the C-frame;

[0010] The coating roller assembly is installed in the C-frame and connected to the transmission assembly so that the coating roller assembly can be driven by the transmission assembly to roll coat the strip steel.

[0011] The receiving tray is located in the C-frame and below the paint roller assembly.

[0012] Furthermore, the coating roller assembly includes an upper coating roller, a lower coating roller, an upper adhesive roller, and a lower adhesive roller. The upper coating roller and the lower coating roller are located on the upper and lower sides of the strip steel, respectively, and are staggered in an alternating manner, forming a wrap angle with the strip steel.

[0013] The upper coating roller and the lower coating roller are located above the upper coating roller and below the lower coating roller, respectively.

[0014] Furthermore, the upper coating roller and the lower coating roller operate in the opposite direction to the running direction of the strip steel to achieve a reverse coating process.

[0015] Furthermore, the transmission assembly includes multiple AC variable frequency motors to drive the upper coating roller, lower coating roller, upper adhesive roller, and lower adhesive roller respectively.

[0016] Furthermore, the coating roller assembly also includes a servo motor fine-tuning mechanism and a pressure sensor system for achieving closed-loop control.

[0017] Furthermore, the servo motor fine-tuning mechanism includes a lead screw, a slide rail, and a servo motor. An upper mounting platform and a lower mounting platform for arranging the upper coating roller and the lower coating roller are respectively provided on the upper and lower sides of the C-frame.

[0018] The track includes a first upper slide rail and a second upper slide rail arranged on the upper mounting platform, and a first lower slide rail and a second lower slide rail arranged on the lower mounting platform.

[0019] The first upper slide rail is arranged on the upper mounting platform, the second upper slide rail is arranged on the first upper slide rail, the mounting seat of the upper coating roller is slidably mounted on the first upper slide rail, and the upper adhesive roller is slidably mounted on the second upper slide rail;

[0020] The mounting bases of the upper coating roller and the lower adhesive roller are respectively connected to servo motors mounted on the upper mounting platform and the mounting base of the upper coating roller via the lead screw, and the lead screw is threaded to the mounting base so as to drive the lead screw to rotate through the servo motor to adjust the distance between the upper coating roller and the upper adhesive roller.

[0021] Furthermore, the first lower slide rail is arranged on the lower mounting platform, the second lower slide rail is arranged on the first lower slide rail, the mounting seat of the lower coating roller is slidably mounted on the first lower slide rail, and the lower adhesive roller is slidably mounted on the second lower slide rail;

[0022] The mounting bases of the lower coating roller and the lower adhesive roller are respectively connected to servo motors mounted on the lower mounting platform and the mounting base of the lower coating roller via the lead screw, and the lead screw is threaded to the mounting base so as to drive the lead screw to rotate through the servo motor to adjust the distance between the lower coating roller and the lower adhesive roller.

[0023] Furthermore, the pressure sensor system includes a pressure sensor for detecting the pressure between the lower coating roller and the lower adhesive roller and the pressure between the upper coating roller and the upper adhesive roller, and the pressure sensor is connected to a servo motor; when the pressure reaches a set value, the servo motor stops rotating, forming a closed-loop control.

[0024] Furthermore, a hydraulic cylinder is provided on the lower mounting platform, and the first lower slide rail is pushed by the hydraulic cylinder so that the lower coating roller and the lower adhesive roller move away from or close to the strip steel.

[0025] A hydraulic cylinder is provided on the upper mounting platform, and the first upper slide rail is pushed by the hydraulic cylinder so that the upper coating roller and the upper adhesive roller are moved away from or close to the strip steel.

[0026] Furthermore, rollers are provided at the bottom of the C-frame, and a motor for driving the rollers is provided on the C-frame to drive the C-frame to reciprocate along the track from the transmission side to the operation side.

[0027] The beneficial effects of this utility model are as follows:

[0028] 1. Improve production efficiency and continuity

[0029] This utility model of an automated horizontal roller coating machine achieves a breakthrough in non-stop roller changing through an innovative C-shaped frame and offline roller changing design. The C-shaped frame moves along the track to the operating side, allowing operators to change the coating rollers from the standby position without disturbing the strip's operation, thus avoiding the inefficiency of traditional roller changing that requires machine shutdown. Compared to the tens of minutes of downtime required by traditional equipment, this device ensures continuous production, significantly improves efficiency, and is particularly suitable for modern production lines with high-volume demands.

[0030] 2. Enhance safety and ease of operation

[0031] This automated horizontal roller coating machine completely isolates the roller changing operation from the strip movement, eliminating the risk of personnel and equipment being cut or injured by the strip in traditional roller changing. Operators use specialized tools within a safe area to complete the roller changing, simplifying the operation process and significantly reducing labor intensity. The compact C-frame structure and integrated transmission assembly design facilitate maintenance, occupy a small area, and are adaptable to various production scenarios, further enhancing the safety and practicality of the equipment.

[0032] 3. Optimize coating quality and process precision

[0033] This unit supports reverse coating processes via independently driven coating and bonding rollers, precisely controlling rotation speed and coating thickness to ensure uniform coating. Equipped with a servo motor fine-tuning mechanism and pressure sensor system, it achieves closed-loop control of roller gap, wrap angle, and pressure, resulting in stable coating quality and meeting high-precision production requirements. This innovative design significantly improves coating results and enhances the equipment's competitiveness in the high-end market.

[0034] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0036] Figure 1 This is a schematic diagram of the structure of an automated horizontal roller coating machine in the embodiment;

[0037] Figure 2 This is a schematic diagram illustrating the state changes of an automated horizontal roller coating machine in an embodiment.

[0038] Figure 3 This is a schematic diagram of the paint roller assembly in the embodiment;

[0039] Figure 4This is a schematic diagram showing the running direction of the paint roller assembly in the embodiment;

[0040] Figure 5 This is a partial schematic diagram of the coating roller assembly in the embodiment.

[0041] Reference numerals in the attached drawings: 1. Transmission assembly; 2. C-frame; 3. Rail; 31. First upper slide rail; 32. Second upper slide rail; 33. First lower slide rail; 34. Second lower slide rail; 4. Coating roller assembly; 41. Upper coating roller; 42. Lower coating roller; 43. Upper adhesive roller; 44. Lower adhesive roller; 5. Receiving tray; 6. Upper mounting platform; 7. Lower mounting platform; 8. Hydraulic cylinder; 9. Strip steel; 10. Lead screw; 11. Servo motor; 12. Roller; 13. Limiting baffle; 14. Fixed mounting column. Detailed Implementation

[0042] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0044] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0045] Example 1

[0046] This embodiment provides an automated horizontal roll coating machine for efficient roll coating of steel strip. For example... Figure 1 As shown, the device includes a transmission assembly 1, a C-shaped frame 2, a track 3, a paint roller assembly 4, and a receiving tray 5.

[0047] The C-frame 2 is an integrally welded structure, mounted on the track 3, and equipped with rollers 12 at its bottom. Driven by a motor, the rollers reciprocate along the track 3 from the transmission side (working position) to the operating side (standby position), with their openings facing the transmission side to facilitate the passage of the strip steel 9. The transmission assembly 1 is fixedly connected to the C-frame 2, located on the operating side of the C-frame 2, and moves together with the C-frame 2. The paint roller assembly 4 is installed inside the C-frame 2 and driven by the transmission assembly 1 to perform roller coating on the strip steel 9. The receiving tray 5 is located inside the C-frame 2, below the paint roller assembly 4, and is used to collect paint dripping during the coating process.

[0048] like Figure 2 As shown, the coating roller assembly 4 includes an upper coating roller 41, a lower coating roller 42, an upper adhesive roller 43, and a lower adhesive roller 44. The upper coating roller 41 and the lower coating roller 42 are located on the upper and lower sides of the strip 9, respectively, and are staggered, forming a wrap angle of approximately 30° with the strip 9 to ensure uniform coating. The upper adhesive roller 43 is located above the upper coating roller 41 and is used to transfer the coating to the upper coating roller 41; the lower adhesive roller 44 is located below the lower coating roller 42 and is used to transfer the coating to the lower coating roller 42.

[0049] During operation, the upper coating roller 41 and the lower coating roller 42 rotate in the opposite direction to the running direction of the strip 9, forming a reverse coating process to improve coating quality. The transmission assembly 1 uses multiple AC variable frequency motors to independently drive the upper coating roller 41, the lower coating roller 42, the upper adhesive roller 43, and the lower adhesive roller 44. The speed can be adjusted according to process requirements; for example, the speed of the upper coating roller 41 is set to 50 rpm.

[0050] To achieve precise adjustment, the paint roller assembly 4 is equipped with a servo motor fine-tuning mechanism and a pressure sensor system. The upper and lower sides of the C-frame 2 are respectively provided with an upper mounting platform 6 and a lower mounting platform 7 for mounting the various components of the paint roller assembly 4. The servo motor fine-tuning mechanism includes a lead screw 10, a slide rail, and a servo motor 11. Specifically, the slide rail includes a first upper slide rail 31, a second upper slide rail 32, a first lower slide rail 33, and a second lower slide rail 34. The first upper slide rail 31 is fixed to the upper mounting platform 6, and the second upper slide rail 32 is mounted on the first upper slide rail 31; the first lower slide rail 33 is fixed to the lower mounting platform 7, and the second lower slide rail 34 is mounted on the first lower slide rail 33.

[0051] The mounting base of the upper coating roller 41 is slidably mounted on the first upper slide rail 31, and the mounting base of the upper adhesive roller 43 is slidably mounted on the second upper slide rail 32. Both mounting bases are connected to a servo motor mounted on the upper mounting platform 6 via lead screws, with the lead screws and mounting bases having a threaded connection. The servo motor drives the lead screw to rotate, adjusting the distance between the upper coating roller 41 and the upper adhesive roller 43, for example, adjusting the gap between the two rollers to 5 mm. Similarly, the mounting base of the lower coating roller 42 is slidably mounted on the first lower slide rail 33, and the mounting base of the lower adhesive roller 44 is slidably mounted on the second lower slide rail 34. The distance between them is adjusted by the servo motor 11 and the lead screw 10 on the lower mounting platform 7.

[0052] The pressure sensor system includes multiple pressure sensors (conventional structure, not shown in the figure) that detect the pressure between the upper coating roller 41 and the upper adhesive roller 43, and between the lower coating roller 42 and the lower adhesive roller 44, respectively. The pressure sensors are connected to a servo motor signal. When the pressure reaches a set value (e.g., 500 Newtons), the servo motor stops rotating, forming a closed-loop control to ensure stable pressure between the rollers.

[0053] Furthermore, hydraulic cylinders 8 are respectively installed on the upper mounting platform 6 and the lower mounting platform 7. The hydraulic cylinders 8 push the first upper slide rail 31 and the first lower slide rail 33 to move, causing the upper coating roller 41 and the lower coating roller 42 to quickly approach or move away from the strip steel 9, preventing irreversible cuts and abrasions from the weld seams of adjacent strip steel rolls on the coating rollers, and accommodating the need to open the coating rollers when changing rollers. For example, the stroke of the hydraulic cylinder 8 is set to 50 mm.

[0054] In the roll changing operation, the upper coating roll 41 and the lower coating roll 42 are first moved away from the strip 9. Then, the C-shaped frame 2 is driven to move along the track 3 to the operating side. The strip 9 passes through the opening. The operator uses special tools to change the rolls. The whole process does not require stopping the machine, which improves production efficiency.

[0055] Example 2

[0056] Based on Example 1, this embodiment further optimizes the control system and adaptability of the device to meet the requirements of higher precision roll coating.

[0057] Compared to Embodiment 1, the servo motor fine-tuning mechanism in this embodiment adds a position feedback function. A high-precision rotary encoder is installed on the lead screw 10 to monitor the roller position in real time, with an accuracy of up to 0.1 mm. The servo motor 11 adjusts the distance between the upper coating roller 41 and the upper adhesive roller 43, and between the lower coating roller 42 and the lower adhesive roller 44, based on the encoder feedback signal, ensuring a constant roller gap. The pressure sensor system is upgraded to a high-frequency response pressure sensor, with the sampling frequency increased to 100 Hz, enabling rapid response to pressure changes and fine-tuning via the servo motor.

[0058] To accommodate strip steel 9 of different specifications, this embodiment adds a displacement sensor to the hydraulic cylinder 8 to monitor the movement distance of the first upper slide rail 31 and the first lower slide rail 33. The operator can input the strip steel thickness (e.g., 1 mm to 3 mm) through the control panel, and the system automatically adjusts the stroke of the hydraulic cylinder 8 to maintain the optimal wrap angle between the upper coating roller 41 and the lower coating roller 42 and the strip steel 9.

[0059] In practical operation, the AC variable frequency motor of transmission assembly 1 supports a wider speed range (20 to 80 rpm) to adapt to the needs of different coating viscosities and coating thicknesses. The receiving tray 5 features a removable design for easy cleaning and maintenance.

[0060] Through the above improvements, this embodiment significantly enhances the automation level and process adaptability of the device, making it suitable for high-precision coating scenarios, such as strip coating with thickness uniformity requirements of ≤±10% micrometers.

[0061] Furthermore, a limiting baffle 13 is provided on the side of the track 3 near the standby position, and a stop block that cooperates with the limiting baffle 13 is provided on the transmission assembly 1 to restrict the movement position of the C-shaped frame 2; a fixed mounting column 14 is provided on the side of the track 3 near the working position, and when the C-shaped frame 2 moves to the working position, the C-shaped frame 2 is connected to the fixed mounting column 14 by a pin, so that the C-shaped frame 2 is fixed on the track 3.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automated horizontal roll coater, characterized by, This includes the transmission assembly, C-frame, track, paint roller assembly, and receiving tray; The C-frame is an integral structure, set on the track, and can reciprocate along the track from the transmission side to the operation side, with the opening of the C-frame facing the transmission side; The transmission assembly is integrated with the C-frame, arranged on the operating side of the C-frame, and moves with the C-frame; The coating roller assembly is installed in the C-frame and connected to the transmission assembly so that the coating roller assembly can be driven by the transmission assembly to roll coat the strip steel. The receiving tray is located in the C-frame and below the paint roller assembly.

2. The automated horizontal roll coater of claim 1, wherein, The coating roller assembly includes an upper coating roller, a lower coating roller, an upper adhesive roller, and a lower adhesive roller. The upper coating roller and the lower coating roller are located on the upper and lower sides of the strip steel, respectively, and are staggered in an alternating manner, forming a wrap angle with the strip steel. The upper coating roller and the lower coating roller are located above the upper coating roller and below the lower coating roller, respectively.

3. The automated horizontal roller coating machine according to claim 2, characterized in that, The upper and lower coating rollers rotate in the opposite direction to the strip's running direction to achieve a reverse coating process.

4. The automated horizontal roll coater of claim 2, wherein, The transmission assembly includes multiple AC variable frequency motors to drive the upper coating roller, lower coating roller, upper adhesive roller, and lower adhesive roller respectively.

5. The automated horizontal roll coater of claim 2, wherein, The coating roller assembly also includes a servo motor fine-tuning mechanism and a pressure sensor system for achieving closed-loop control.

6. The automated horizontal roll coater of claim 5, wherein, The servo motor fine-tuning mechanism includes a lead screw, a slide rail, and a servo motor. An upper mounting platform and a lower mounting platform for arranging the upper coating roller and the lower coating roller are respectively provided on the upper and lower sides of the C-frame. The track includes a first upper slide rail and a second upper slide rail arranged on the upper mounting platform, and a first lower slide rail and a second lower slide rail arranged on the lower mounting platform. The first upper slide rail is arranged on the upper mounting platform, the second upper slide rail is arranged on the first upper slide rail, the mounting seat of the upper coating roller is slidably mounted on the first upper slide rail, and the upper adhesive roller is slidably mounted on the second upper slide rail; The mounting bases of the upper coating roller and the lower adhesive roller are respectively connected to servo motors mounted on the upper mounting platform and the mounting base of the upper coating roller via the lead screw, and the lead screw is threaded to the mounting base so as to drive the lead screw to rotate through the servo motor to adjust the distance between the upper coating roller and the upper adhesive roller.

7. The automated horizontal roll coater of claim 6, wherein, The first lower slide rail is arranged on the lower mounting platform, the second lower slide rail is arranged on the first lower slide rail, the mounting seat of the lower coating roller is slidably mounted on the first lower slide rail, and the lower adhesive roller is slidably mounted on the second lower slide rail; The mounting bases of the lower coating roller and the lower adhesive roller are respectively connected to servo motors mounted on the lower mounting platform and the mounting base of the lower coating roller via the lead screw, and the lead screw is threaded to the mounting base so as to drive the lead screw to rotate through the servo motor to adjust the distance between the lower coating roller and the lower adhesive roller.

8. The automated horizontal roll coater of claim 7, wherein, The pressure sensor system includes pressure sensors for detecting the pressure between the lower coating roller and the lower adhesive roller and the pressure between the upper coating roller and the upper adhesive roller, and the pressure sensors are connected to a servo motor; when the pressure reaches a set value, the servo motor stops rotating, forming a closed-loop control.

9. The automated horizontal roller coating machine according to claim 7, characterized in that, A hydraulic cylinder is provided on the lower mounting platform, and the first lower slide rail is pushed by the hydraulic cylinder so that the lower coating roller and the lower adhesive roller are moved away from or close to the strip steel. A hydraulic cylinder is provided on the upper mounting platform, and the first upper slide rail is pushed by the hydraulic cylinder so that the upper coating roller and the upper adhesive roller are moved away from or close to the strip steel.

10. The automated horizontal roll coater of claim 1, wherein, The bottom of the C-frame is provided with rollers, and a motor for driving the rollers is provided on the C-frame to drive the C-frame to reciprocate along the track from the transmission side to the operation side.

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