Automatic horizontal roller coating device

Abstract

The invention belongs to the technical field of metallurgical equipment, and relates to an automatic horizontal roller coating device which comprises a transmission assembly, a C-shaped frame, a rail and a coating roller assembly. The C-shaped frame is of an integral structure, is arranged on the track and can move from the transmission side to the operation side along the track, and an opening of the C-shaped frame faces the transmission side; the transmission assembly and the C-shaped frame are connected into a whole, and the transmission assembly is arranged on the operation side of the C-shaped frame and moves along with the C-shaped frame. The coating roller assembly is installed in the C-shaped frame and connected with the transmission assembly so that the transmission assembly can drive the coating roller assembly to conduct roller coating on the strip steel. Through the innovative C-shaped frame and off-line roller replacement design, the breakthrough of non-stop roller replacement is achieved, an operator replaces a coating roller at a standby position, strip steel operation is not interfered, and the low-efficiency problem that traditional roller replacement needs to be stopped is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of metallurgical equipment, and relates to an automatic horizontal roller coating device. BACKGROUND

[0002] In the field of cold-rolled strip processing, the roller coater is a key equipment, which has been widely used in many important fields such as color coating, galvanizing, silicon steel coating and the like, due to its high film thickness control precision and strong adaptability to coating liquid viscosity. Among them, the horizontal double-sided roller coater is widely applied to many strip horizontal running units due to its outstanding feature of small floor area.

[0003] The horizontal double-sided roller coater is equipped with two coating heads. The upper coating head is arranged above the strip and is responsible for coating the upper surface of the strip. The lower coating head is arranged below the strip and is used for coating the lower surface of the strip. Each coating head is equipped with an independent coating liquid pan for dipping coating, and each coating roller has a dedicated coating roller driving system to realize precise control of the roller speed and coating film thickness. However, in actual production process, the coating roller of the roller coater is prone to wear, which requires the roller coater to frequently switch between working state and roller replacement state. The structure of the horizontal roller coater is characterized in that the upper coating head is above the strip and the lower coating head is below the strip, and the upper and lower coating rollers of the ordinary roller coater are fixedly arranged and have no mobility. At present, the conventional roller replacement operation process is as follows: the operator first switches the equipment to the roller replacement state, at this time the upper and lower coating heads are away from the strip to leave enough safety distance; then the steel wire rope is sleeved on the shaft neck at both ends of the coating roller, and the coating roller is hoisted by the crane or the hoist to complete the replacement. However, this traditional roller replacement method has many disadvantages. On the one hand, its efficiency is extremely low, and a large amount of time and labor is needed from preparation to completion of the whole roller replacement process, which seriously affects the production efficiency. On the other hand, the risk coefficient is extremely high. The coating roller of the upper coating head is above the strip and has no interference around, so the operation is relatively easy. However, the coating roller of the lower coating head must avoid the upper strip during the process of sleeving the steel wire rope and preparing to hoist away from the bearing seat. During the whole hoisting and replacing process, the personnel and the roller body always face the risk of being cut or injured by the strip. In order to ensure the safety of personnel, the unit must stop running during the roller replacement period, and the strip is no longer transported, which further aggravates the interruption of production.

[0004] In summary, the traditional roller replacement method of the roller coater is time-consuming and labor-intensive, with high safety risk, which seriously restricts the further development and application of the roller coater in the field of cold-rolled strip processing. Therefore, it is of great practical significance to develop an efficient, safe and convenient roller coater roller replacement device and method. SUMMARY

[0005] Therefore, the present application aims to provide an automatic horizontal roller coating device to solve the technical problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] An automatic horizontal roller coating device comprises a transmission assembly, a C-shaped frame, a track and a coating roller assembly.

[0008] The C-shaped frame is an integral structure arranged on the track and capable of moving along the track from the transmission side to the operation side, and the opening of the C-shaped frame faces the transmission side.

[0009] The transmission assembly is connected with the C-shaped frame as a whole and arranged on the operation side of the C-shaped frame and moves with the C-shaped frame.

[0010] The coating roller assembly is installed in the C-shaped frame and connected with the transmission assembly to drive the coating roller assembly to perform roller coating on the strip steel through the transmission assembly.

[0011] Further, the coating roller assembly comprises 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 respectively located on the upper and lower sides of the strip steel and staggered in an up-down manner and form an included angle with the strip steel.

[0012] The upper adhesive roller and the lower adhesive roller are respectively located on the upper side of the upper coating roller and the lower side of the lower coating roller.

[0013] Further, the running direction of the upper coating roller and the lower coating roller is opposite to the running direction of the strip steel to realize the reverse coating process.

[0014] Further, the transmission assembly comprises a plurality of AC variable frequency motors to respectively drive the upper coating roller, the lower coating roller, the upper adhesive roller and the lower adhesive roller.

[0015] Further, the coating roller assembly further comprises a servo motor fine adjustment mechanism and a pressure sensor system for realizing closed-loop control.

[0016] Further, the servo motor fine adjustment mechanism comprises a lead screw, a slide rail and a servo motor, and the upper installation table and the lower installation table for arranging the upper coating roller and the lower coating roller are respectively arranged on the upper side and the lower side of the C-shaped frame.

[0017] The track comprises a first upper slide rail and a second upper slide rail arranged on the upper installation table, and a first lower slide rail and a second lower slide rail arranged on the lower installation table.

[0018] The first upper slide rail is arranged on the upper mounting table, the second upper slide rail is arranged on the first upper slide rail, the mounting seat of the upper coating roller is slidingly mounted on the first upper slide rail, and the upper adhesive roller is slidingly mounted on the second upper slide rail.

[0019] The mounting seats of the upper coating roller and the lower adhesive roller are respectively connected with the servo motors mounted on the upper mounting table and the mounting seat of the upper coating roller through the lead screws, and the lead screws and the mounting seats are in threaded connection, so that the servo motor drives the rotation of the lead screw, and the distance between the upper coating roller and the upper adhesive roller is adjusted.

[0020] Further, the first lower slide rail is arranged on the lower mounting table, the second lower slide rail is arranged on the first lower slide rail, the mounting seat of the lower coating roller is slidingly mounted on the first lower slide rail, and the lower adhesive roller is slidingly mounted on the second lower slide rail.

[0021] The mounting seats of the lower coating roller and the lower adhesive roller are respectively connected with the servo motors mounted on the lower mounting table and the mounting seat of the lower coating roller through the lead screws, and the lead screws and the mounting seats are in threaded connection, so that the servo motor drives the rotation of the lead screw, and the distance between the lower coating roller and the lower adhesive roller is adjusted.

[0022] Further, the pressure sensor system comprises 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 with the servo motors; when the pressure reaches a set value, the servo motor stops rotating, forming a closed-loop control.

[0023] Further, a hydraulic oil cylinder is arranged on the lower mounting table, and the first lower slide rail is pushed by the hydraulic oil cylinder, so that the lower coating roller and the lower adhesive roller are away from or close to the strip steel.

[0024] A hydraulic oil cylinder is arranged on the upper mounting table, and the first upper slide rail is pushed by the hydraulic oil cylinder, so that the upper coating roller and the upper adhesive roller are away from or close to the strip steel.

[0025] Further, a roller is arranged at the bottom of the C-shaped frame, and a motor for driving the roller is arranged on the C-shaped frame, so as to drive the C-shaped frame to move along the track from the transmission side to the operation side.

[0026] The beneficial effects of the present application are:

[0027] 1. Improve production efficiency and continuity

[0028] The automatic horizontal roller coating device of the present application realizes the breakthrough of changing rollers without stopping through the innovative C-shaped frame and offline roller changing design. The C-shaped frame moves to the operating side along the track, and the operator changes the coating roller in the standby position, and the strip running is not disturbed, avoiding the low efficiency problem of stopping the traditional roller changing. Compared with the time-consuming of dozens of minutes of traditional equipment stopping, the device ensures the continuity of production, significantly improves the efficiency, and is especially suitable for modern production lines with high yield demand.

[0029] 2. Enhancing safety and operation convenience

[0030] The automatic horizontal roller coating device completely isolates the roller changing operation from the strip running, completely eliminates the risk of personnel and equipment being cut or bumped by the strip in traditional roller changing. The operator uses special tools to complete the roller changing in the safety area, and the operation process is simple and the labor intensity is greatly reduced. The C-shaped frame structure is compact, the transmission assembly integrated design is convenient for maintenance, the occupied area is small, and it is suitable for various production scenes, further improving the safety and practicality of the equipment.

[0031] 3. Optimizing coating quality and process precision

[0032] Through the independently driven coating roller and the adhesive roller, the device supports the reverse coating process, accurately controls the speed and coating thickness, and ensures the uniformity of the coating. Equipped with a servo motor fine adjustment mechanism and a pressure sensor system, it realizes closed-loop control of the roller gap, wrap angle and pressure, and the coating quality is stable, meeting the high-precision production demand. This innovative design significantly improves the coating effect and enhances the competitiveness of the equipment in the high-end market.

[0033] Other advantages, objects and features of the present application will be in part apparent and in part pointed out below in the specification, and in part will be learned from a reading of the following specification and by practicing the present application according to the principles described herein. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the specification as follows. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to make the purpose, technical scheme and advantages of the present application clearer, the preferred detailed description of the present application will be described below in combination with the drawings, in which:

[0035] Figure 1 is a structural schematic diagram of an automatic horizontal roller coating device in the embodiment;

[0036] Figure 2 is a state change schematic diagram of an automatic horizontal roller coating device in the embodiment;

[0037] Figure 3 is a structural schematic diagram of a coating roller assembly in the embodiment;

[0038] Figure 4Fig. 2 is a schematic view of the running direction of the paint roller assembly in the embodiment;

[0039] Figure 5 Fig. 3 is a partial schematic view of the paint roller assembly in the embodiment.

[0040] Fig. 1 is a schematic view of the paint roller assembly in the embodiment. DETAILED DESCRIPTION

[0041] The present application is described in greater detail by the specific embodiments below, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure herein. The present application can also be implemented or applied by other different specific embodiments, and various modifications or changes can be made to the details herein based on different views and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0042] The drawings are only used for exemplary illustration, and the representation is only a schematic view, not a physical drawing, and should not be understood as a limitation on the present application; in order to better illustrate the embodiments of the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; it is understandable to those skilled in the art that some known structures and their descriptions in the drawings may be omitted.

[0043] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and should not be understood as a limitation on the present application, and for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0044] Embodiment 1

[0045] The present embodiment provides an automatic horizontal roller coating device for efficient roller coating of a strip steel. As shown in Figure 1As shown, the device comprises a transmission assembly 1, a C-shaped frame 2, a track 3, a coating roller assembly 4 and a receiving tray 5.

[0046] The C-shaped frame 2 is a whole welded structure, installed on the track 3, and provided with a roller 12 at the bottom, which can be driven by a motor to move along the track 3 from the transmission side (working position) to the operation side (standby position). The opening of the C-shaped frame 2 faces the transmission side to facilitate the passage of the strip steel 9. The transmission assembly 1 is fixedly connected with the C-shaped frame 2 and located at the operation side of the C-shaped frame 2, moving together with the C-shaped frame 2. The coating roller assembly 4 is installed inside the C-shaped frame 2 and driven by the transmission assembly 1 to realize the roller coating operation on the strip steel 9. The receiving tray 5 is arranged in the C-shaped frame 2 below the coating roller assembly 4 to collect the coating dripping during the coating process.

[0047] As shown in Figure 2 The coating roller assembly 4 comprises 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 respectively located on the upper and lower sides of the strip steel 9, staggered in an upper-lower arrangement, and form an included angle of about 30° with the strip steel 9 to ensure uniform coating of the coating. The upper adhesive roller 43 is located on the upper side of the upper coating roller 41 to transfer the coating to the upper coating roller 41; and the lower adhesive roller 44 is located on the lower side of the lower coating roller 42 to transfer the coating to the lower coating roller 42.

[0048] In operation, the running directions of the upper coating roller 41 and the lower coating roller 42 are opposite to the running direction of the strip steel 9 to form a reverse coating process to improve the coating quality. The transmission assembly 1 adopts 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, and the rotating speeds can be adjusted according to the process requirements, for example, the rotating speed of the upper coating roller 41 is set to 50 rpm.

[0049] To realize accurate adjustment, the coating roller assembly 4 is provided with a servo motor fine adjustment mechanism and a pressure sensor system. The upper side and the lower side of the C-shaped frame 2 are respectively provided with an upper mounting table 6 and a lower mounting table 7 for mounting various components of the coating roller assembly 4. The servo motor fine adjustment mechanism comprises a lead screw 10, a slide rail and a servo motor 11. The slide rail specifically comprises 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 on the upper mounting table 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 on the lower mounting table 7, and the second lower slide rail 34 is mounted on the first lower slide rail 33.

[0050] The mounting base of the upper coating roller 41 is slidingly mounted on the first upper sliding rail 31, and the mounting base of the upper adhesive roller 43 is slidingly mounted on the second upper sliding rail 32. The two mounting bases are respectively connected with the servo motor mounted on the upper mounting table 6 through the screw rod, and the screw rod is in threaded cooperation with the mounting base. The servo motor drives the screw rod to rotate, adjusts the distance between the upper coating roller 41 and the upper adhesive roller 43, and for example, adjusts the gap between the two roller bodies to 5 mm. Similarly, the mounting base of the lower coating roller 42 is slidingly mounted on the first lower sliding rail 33, and the mounting base of the lower adhesive roller 44 is slidingly mounted on the second lower sliding rail 34, and the distance between the two is adjusted through the servo motor 11 and the screw rod 10 on the lower mounting table 7.

[0051] The pressure sensor system includes a plurality of pressure sensors (conventional structure, not shown in the figure) for respectively detecting the pressure between the upper coating roller 41 and the upper adhesive roller 43 and the pressure between the lower coating roller 42 and the lower adhesive roller 44. The pressure sensor is connected with the servo motor signal, and when the pressure reaches the set value (such as 500 Newton), the servo motor stops rotating, forming a closed loop control, and ensuring the stability of the pressure between the rollers.

[0052] In addition, the upper mounting table 6 and the lower mounting table 7 are respectively provided with a hydraulic oil cylinder 8. The hydraulic oil cylinder 8 pushes the first upper sliding rail 31 and the first lower sliding rail 33 to move, so that the upper coating roller 41 and the lower coating roller 42 respectively quickly approach or move away from the strip steel 9, prevent the adjacent two coils of strip steel from causing irreversible cuts and scratches to the coating roller, and adapt to the requirement of opening the coating roller when changing the roller. For example, the stroke of the hydraulic oil cylinder 8 is set to 50 mm.

[0053] In the roller changing operation, first, the upper coating roller 41 and the lower coating roller 42 are moved away from the strip steel 9, then the C-shaped frame 2 is driven to move to the operation side along the track 3, the strip steel 9 passes through the opening, and the operator changes the roller using a special tool, the whole process does not need to stop, and the production efficiency is improved.

[0054] Embodiment 2

[0055] Based on the embodiment 1, the control system and adaptability of the device are further optimized to meet the higher precision roller coating requirement.

[0056] Compared with the embodiment 1, the position feedback function is added to the servo motor fine adjustment mechanism of the embodiment, a high-precision rotary encoder is installed on the screw rod 10, which is used to monitor the position of the roller in real time, and the precision can reach 0.1 mm. The servo motor 11 adjusts the distance between the upper coating roller 41 and the upper adhesive roller 43 and the distance between the lower coating roller 42 and the lower adhesive roller 44 according to the feedback signal of the encoder, and ensures the constant gap between the rollers. The pressure sensor system is upgraded to a high-frequency response pressure sensor, and the sampling frequency is increased to 100 Hz, which can quickly respond to the pressure change and make fine adjustment through the servo motor.

[0057] In order to adapt to different specifications of the strip steel 9, the displacement sensor is added to the hydraulic cylinder 8 to monitor the moving distance of the first upper slide rail 31 and the first lower slide rail 33. The operator can input the thickness of the strip steel (such as 1mm to 3mm) through the control panel, and the system automatically adjusts the stroke of the hydraulic cylinder 8 to keep the optimal wrap angle between the upper coating roller 41 and the lower coating roller 42 and the strip steel 9.

[0058] In actual operation, the AC variable frequency motor of the transmission assembly 1 supports a wider speed range (20 to 80 revolutions per minute) to adapt to the requirements of different paint viscosities and coating thicknesses. The receiving disc 5 is designed to be detachable for easy cleaning and maintenance.

[0059] Through the above improvements, the automation degree and process adaptability of the device are significantly improved, and the device is suitable for high-precision coating scenarios, such as strip steel coating with a thickness uniformity requirement of ≤±10% microns.

[0060] Further, a limiting baffle 13 is arranged on one side of the track 3 close to the standby position, and a stop block is arranged on the transmission assembly 1 to cooperate with the limiting baffle 13 to limit the moving position of the C-shaped frame 2; a fixed mounting column 14 is arranged on one side of the track 3 close to the working position, and when the C-shaped frame 2 moves to the working position, the C-shaped frame 2 is connected with the fixed mounting column 14 through a latch, so that the C-shaped frame 2 is fixed on the track 3.

[0061] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present application.

Claims

1. An automated horizontal roller coating device, characterized in that: Including transmission assembly, C-frame, track and paint roller assembly; The C-shaped frame is an integral structure, arranged on the track, and can reciprocate along the track from the transmission side to the operating side, and the opening of the C-shaped frame faces the transmission side; The transmission assembly is connected to the C-frame as a whole, is arranged on the operating side of the C-frame, and moves with the C-frame; The coating roller assembly is installed in the C-shaped frame and is connected to the transmission assembly so that the coating roller assembly is driven by the transmission assembly to perform roller coating on the strip steel.

2. The automated horizontal roller coating device according to claim 1, characterized in that: The coating roller assembly includes an upper coating roller, a lower coating roller, an upper bonding roller and a lower bonding roller, wherein the upper coating roller and the lower coating roller are respectively located on the upper and lower sides of the steel strip, are staggered up and down, and form a wrap angle with the steel strip; The upper sticking roller and the lower sticking roller are respectively located on the upper side of the upper coating roller and the lower side of the lower coating roller.

3. The automated horizontal roller coating device according to claim 2, characterized in that: The running direction of the upper coating roller and the lower coating roller is opposite to the running direction of the strip steel to realize the reverse coating process.

4. The automated horizontal roller coating device according to claim 2, characterized in that: The transmission assembly includes a plurality of AC variable frequency motors to respectively drive the upper coating roller, the lower coating roller, the upper bonding roller and the lower bonding roller.

5. The automated horizontal roller coating device according to claim 2, characterized in that: The paint roller assembly also includes a servo motor fine-tuning mechanism and a pressure sensor system for achieving closed-loop control.

6. The automated horizontal roller coating device according to claim 5, characterized in that: The servo motor fine-tuning mechanism includes a screw rod, 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 side and the lower side of the C-shaped 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 seats of the upper coating roller and the lower adhesive roller are respectively connected to the servo motors installed on the upper mounting platform and the mounting seat of the upper coating roller through the screw rod, and the screw rod and the mounting seat are threadedly connected to drive the screw rod to rotate through the servo motor to adjust the distance between the upper coating roller and the upper adhesive roller.

7. The automated horizontal roller coating device according to claim 6, characterized in that: 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 bonding roller is slidably mounted on the second lower slide rail; The mounting seats of the lower coating roller and the lower adhesive roller are respectively connected to the servo motors installed on the lower mounting platform and the mounting seat of the lower coating roller through the screw rod, and the screw rod and the mounting seat are threadedly connected to drive the screw rod to rotate through the servo motor to adjust the distance between the lower coating roller and the lower adhesive roller.

8. The automated horizontal roller coating device according to claim 7, characterized in that: 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 to form a closed-loop control.

9. The automated horizontal roller coating device according to claim 7, characterized in that: A hydraulic cylinder is provided on the lower mounting platform, and the first lower sliding rail is pushed by the hydraulic cylinder to move the lower coating roller and the lower bonding roller 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 to move the upper coating roller and the upper bonding roller away from or close to the steel strip.

10. The automated horizontal roller coating device according to claim 1, characterized in that: A roller is provided at the bottom of the C-shaped frame, and a motor for driving the roller is provided on the C-shaped frame to drive the C-shaped frame to move back and forth from the transmission side to the operation side along the track.

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