Horizontal four-roller automatic roller coater

Abstract

The utility model relates to a horizontal four-roller automatic roller coater, including upper roller set and lower roller set, upper roller set includes upper liquid extraction roller and upper coating roller, lower roller set includes lower liquid extraction roller and lower coating roller, upper liquid extraction roller is configured to be close to or far away from upper coating roller, lower liquid extraction roller is configured to be close to or far away from lower coating roller, and the upper liquid extraction roller is configured to be close to or far away from lower coating roller. The upper roller set and the lower roller set are installed on the swing support and the sliding support respectively, the first driving mechanism drives the swing support and the upper roller set to swing, and the second driving mechanism drives the sliding support and the lower roller set to be relatively close to or away from the upper roller set. According to the horizontal four-roller automatic roller coater disclosed by the utility model, the thickness of a coating during coating of the upper coating roller and the lower coating roller is adjusted by four different independent means, and the film thickness and the uniformity of the coating can be more accurately and flexibly controlled through the combined adjustment of the four means; therefore, the horizontal four-roller automatic roller coater can adapt to various coating liquids with different properties.

Description

Technical Field

[0001] The utility model relates to the technical field of cold-rolled strip steel coating, in particular to a horizontal four-roller automatic roller coating machine. Background Art

[0002] In the production process of cold-rolled galvanized steel, color-coated steel, and silicon steel, a roller coater is often required to apply a chemical coating to the surface of the steel strip. Depending on the type of coating, this coating can act as a rust preventer, preventing white rust from forming on the galvanized steel strip; improve the processing performance of subsequent processes, facilitating stamping or surface coating; improve the performance of subsequent processes, such as fingerprint resistance; or apply a certain thickness of insulating coating to impart insulation, rust resistance, and improved processing performance to the silicon steel product. Since coating types vary and film thickness varies, the ability to adjust the coating thickness is a key function of the roller coater.

[0003] Due to the different process layouts, galvanizing units use vertical and horizontal roller coaters accordingly. Especially for horizontal roller coaters, considering the continuous production of the unit and the safe maintenance work such as roller replacement, the roller coater needs to have a corresponding switching function. At present, for silicon steel continuous coating units, since the drying of the insulating coating liquid requires a higher temperature, a longer drying and cooling horizontal furnace is generally used. Therefore, horizontal roller coaters are widely used for coating insulating coatings. At present, silicon steel continuous coating units generally use two-roller grooved spray extrusion coating machines, which are characterized by the coating roller being a free roller with a groove of a certain depth and width engraved on the roller surface. The coating thickness and uniformity are controlled by adjusting the groove depth and the pressure of the upper and lower rollers. However, the two-roller grooved spray extrusion coating machine has a single means of film thickness adjustment and control, and poor adaptability to the type of coating liquid.

[0004] Currently, an increasing number of silicon steel continuous de-coating lines are demanding replacements for existing extrusion roller coaters. Therefore, in the cold-rolled strip coating industry, a horizontal roller coater with automatic switching, precise coating thickness control, and strong coating fluid adaptability is highly valuable. Utility Model Content

[0005] In view of the above problems, the utility model proposes a horizontal four-roller automatic roller coater, which can more flexibly control the thickness and uniformity of the coating.

[0006] The utility model is implemented by the following technical solutions:

[0007] The utility model proposes a horizontal four-roller automatic roller coating machine, comprising an upper roller group and a lower roller group, the upper roller group comprising an upper liquid collection roller and an upper coating roller which are bonded to each other on the outer circumference side, the lower roller group comprising a lower liquid collection roller and a lower coating roller which are bonded to each other on the outer circumference side, the upper liquid collection roller and the lower liquid collection roller are used to dip the coating liquid and transfer the coating liquid to the upper coating roller and the lower coating roller respectively by rotating, the upper coating roller and the lower coating roller are staggered, and the upper coating roller and the lower coating roller are used to coat both sides of a strip conveyed between the two in a staggered clamping manner, the liquid collection roller is configured to be able to relatively approach or move away from the upper coating roller, and the lower liquid collection roller is configured to be able to relatively move away from the upper coating roller Approaching or moving away from the lower coating roller, it also includes a frame, a swing bracket, a sliding bracket, a first drive mechanism and a second drive mechanism. The swing bracket can be rotatably connected to the frame, and the sliding bracket can be slidably connected to the frame. The swing axis of the swing bracket is parallel to the axis of the upper coating roller. The upper roller group and the lower roller group are respectively installed on the swing bracket and the sliding bracket. The first drive mechanism is transmission-connected to the swing bracket to drive the swing bracket and the upper roller group to swing, thereby adjusting the wrap angle between the upper coating roller and the lower coating roller and the belt-shaped member. The second drive mechanism is transmission-connected to the sliding bracket to drive the sliding bracket and the lower roller group to move relatively closer to or away from the upper roller group.

[0008] Among them, preferably, the upper roller group is relatively arranged obliquely above the lower roller group, the lower roller group is relatively arranged obliquely below the upper roller group, the upper coating roller is relatively arranged obliquely below the upper liquid collection roller, and the lower coating roller is relatively arranged obliquely above the lower liquid collection roller, and a channel for staggered clamping of the belt is formed between the upper coating roller and the lower coating roller.

[0009] Wherein, preferably, a third driving mechanism is fixedly mounted on the swing bracket, the upper liquid pickup roller is connected to the output end of the third driving mechanism, and the third driving mechanism drives the upper liquid pickup roller to approach or move away from the upper coating roller.

[0010] Preferably, the method further comprises a first pressure sensor, which is installed at the output end of the third driving mechanism and is used to sense the contact pressure between the upper liquid pickup roller and the upper coating roller.

[0011] Preferably, a fourth driving mechanism is fixedly mounted on the sliding bracket, the lower liquid pickup roller is connected to the output end of the fourth driving mechanism, and the fourth driving mechanism drives the lower liquid pickup roller to move closer to or away from the lower coating roller.

[0012] Preferably, the method further includes a second pressure sensor, which is installed at the output end of the fourth driving mechanism and is used to sense the contact pressure between the lower liquid pickup roller and the lower coating roller.

[0013] Preferably, the first driving mechanism is a lifting device, and the output end of the first driving mechanism is fixedly connected to an end of the swing bracket away from the swing center thereof.

[0014] Preferably, a coating liquid pan for holding the coating liquid is further included, and two coating liquid pans are respectively arranged below the upper liquid taking roller and the lower liquid taking roller, and the coating liquid pans are raised and lowered by a lifting device.

[0015] Preferably, a liquid receiving pan is further provided below the upper roller group and below the lower roller group.

[0016] The utility model has the following beneficial effects: the horizontal four-roller automatic roller coater of the utility model has four different independent means to adjust the thickness of the coating when the upper coating roller and the lower coating roller are coating. Through the combined adjustment of these four means, the coating film thickness and uniformity can be controlled more accurately and flexibly, so that the horizontal four-roller automatic roller coater can adapt to various coating liquids with different properties. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of a horizontal four-roll automatic roller coater in a coating state according to an embodiment;

[0018] Figure 2 Schematic diagram of the horizontal four-roll automatic roller coater of the embodiment with the upper roller group and the lower roller group opened. DETAILED DESCRIPTION

[0019] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0020] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0021] See Figure 1 and Figure 2As shown, as a preferred embodiment of the present invention, a horizontal four-roller automatic roller coater is provided. For the convenience of description, the following description is based on the static orientation of the horizontal four-roller automatic roller coater in the installed and used state. The horizontal four-roller automatic roller coater includes an upper roller group 1 and a lower roller group 2. The upper roller group 1 includes an upper liquid collection roller 11 and an upper coating roller 12 that are in contact with each other on the outer peripheral side. The lower roller group 2 includes a lower liquid collection roller 21 and a lower coating roller 22 that are in contact with each other on the outer peripheral side. The upper liquid collection roller 11 and the lower liquid collection roller 21 are used to dip the coating liquid. In this embodiment, the horizontal four-roller automatic roller coater also includes a coating liquid tray (not shown in the figure) for holding the coating liquid. The two coating liquid trays are respectively arranged below the upper liquid collection roller 11 and the lower liquid collection roller 21. The coating liquid tray is raised and lowered by a lifting device. During normal production, the lifting device is adjusted to raise the coating liquid tray to the working position. The upper liquid collection roller 11 and the lower liquid collection roller 21 are partially immersed in the coating liquid of the coating liquid tray and rotate to dip the coating liquid. When the coating liquid tray needs to be cleaned, the lifting device is adjusted to lower the coating liquid tray to a low position, and then the coating liquid tray is taken out for cleaning.

[0022] Since the upper liquid pickup roller 11 and the upper coating roller 12 are in contact with each other at the outer circumference, the upper liquid pickup roller 11 can transfer the coating liquid to the upper coating roller 12 by rotating. Similarly, since the lower liquid pickup roller 21 and the lower coating roller 22 are in contact with each other at the outer circumference, the lower liquid pickup roller 21 can transfer the coating liquid to the lower coating roller 22 by rotating. The upper coating roller 12 and the lower coating roller 22 are staggered. In this embodiment, the upper roller group 1 is relatively arranged obliquely above the lower roller group 2, the lower roller group 2 is relatively arranged obliquely below the upper roller group 1, the upper coating roller 12 is relatively arranged obliquely below the upper liquid pickup roller 11, and the lower coating roller 22 is relatively arranged obliquely above the lower liquid pickup roller 21, so that the upper coating roller 12 is located obliquely above the lower coating roller 22, and a channel for staggered clamping of the strip steel 100 is formed between the upper coating roller 12 and the lower coating roller 22. The steel strip 100 is transported forward in the channel, and the upper coating roller 12 and the lower coating roller 22, which stagger and clamp the steel strip 100, coat both sides of the steel strip 100. In addition to the steel strip 100, in other embodiments, the horizontal four-roll automatic roller coater can also coat other strip-shaped parts.

[0023] The horizontal four-roller automatic roller coater also includes a frame 7, a swing bracket 4, a sliding bracket 5, a first drive mechanism 31 and a second drive mechanism 32. The swing bracket 4 can be rotatably connected to the frame 7 and can swing along the swing shaft 6. The axis of the swing shaft 6 is parallel to the axis of the upper coating roller 12. The sliding bracket 5 is slidably connected to the frame 7, and the sliding track of the sliding bracket 5 is inclined. The upper roller group 1 and the lower roller group 2 are respectively installed on the swing bracket 4 and the sliding bracket 5. The first drive mechanism 31 is installed on the frame 7 and is transmission-connected to the swing bracket 4. The first drive mechanism 31 can drive the swing bracket 4 and the upper roller group 1 to swing. When the upper coating roller 12 and the lower coating roller 22 are pressed onto the strip steel 100, once the swing angle of the upper coating roller 12 relative to the strip steel 100 changes, the wrapping angle between the upper coating roller 12 and the lower coating roller 22 and the strip steel 100 can be changed. By adjusting the wrapping angle between the upper coating roller 12 and the lower coating roller 22 and the strip steel 100, the thickness and uniformity of the coating when the upper coating roller 12 and the lower coating roller 22 are coated can be controlled. On the other hand, the second driving mechanism 32 is installed on the frame 7 and is connected to the sliding bracket 5 in a transmission manner to drive the sliding bracket 5 and the lower roller group 2 to be relatively close to or away from the upper roller group 1. The sliding of the sliding bracket 5 can adjust the clamping force of the upper coating roller 12 and the lower coating roller 22 to clamp the steel strip 100, and can also control the thickness and uniformity of the coating when the upper coating roller 12 and the lower coating roller 22 are coating.

[0024] At the same time, in this embodiment, the upper liquid pickup roller 11 is configured to be able to move relatively close to or away from the upper coating roller 12, so that the amount of coating liquid transferred from the upper liquid pickup roller 11 to the upper coating roller 12 can be adjusted, as well as the contact pressure between the upper liquid pickup roller 11 and the upper coating roller 12 can be adjusted, thereby controlling the coating thickness of the upper coating roller 12. The lower liquid pickup roller 21 is configured to be able to move relatively close to or away from the lower coating roller 22, so that the amount of coating liquid transferred from the lower liquid pickup roller 21 to the lower coating roller 22 can be adjusted, as well as the contact pressure between the lower liquid pickup roller 21 and the lower coating roller 22 can be adjusted, thereby controlling the coating thickness of the lower coating roller 22.

[0025] After the above arrangement, the horizontal four-roller automatic roller coater of this embodiment has four different independent means to adjust the thickness of the coating when the upper coating roller 12 and the lower coating roller 22 are coated. Through the combined adjustment of these four means, the coating film thickness and uniformity can be controlled more accurately and flexibly, so that the horizontal four-roller automatic roller coater can adapt to various coating liquids with different properties.

[0026] In this embodiment, a third driving mechanism 33 is fixedly mounted on the swing bracket 4. In this embodiment, the third driving mechanism 33 is a linear moving cylinder or a linear stepping motor. The upper liquid pickup roller 11 is connected to the output end of the third driving mechanism 33. The third driving mechanism 33 drives the upper liquid pickup roller 11 to move closer to or away from the upper coating roller 12. The first pressure sensor 81 is mounted at the output end of the third driving mechanism 33 for sensing the contact pressure between the upper liquid pickup roller 11 and the upper coating roller 12. For example, the first pressure sensor 81 can be set to rest against the upper liquid pickup roller 11. When the upper liquid pickup roller 11 and the upper coating roller 12 are against each other, the pressure of the upper coating roller 12 on the upper liquid pickup roller 11 is transmitted to the first pressure sensor 81, so that the first pressure sensor 81 senses the pressure value. A fourth drive mechanism 34 is fixedly mounted on the sliding bracket 5. In this embodiment, the fourth drive mechanism 34 is a linear motion cylinder or a linear stepping motor. The lower liquid pickup roller 21 is connected to the output end of the fourth drive mechanism 34. The fourth drive mechanism 34 drives the lower liquid pickup roller 21 to move closer to or away from the lower coating roller 22. The second pressure sensor 82 is mounted on the output end of the fourth drive mechanism 34 to sense the contact pressure between the lower liquid pickup roller 21 and the lower coating roller 22. Similarly, the second pressure sensor 82 can be configured to abut against the lower liquid pickup roller 21. Through the measurement feedback of the first pressure sensor 81 and the second pressure sensor 82, the spacing between the upper liquid pickup roller 11 and the upper coating roller 12, as well as the spacing between the lower liquid pickup roller 21 and the lower coating roller 22, can be more accurately controlled.

[0027] In this embodiment, the first drive mechanism 31 is a lifting device, and the output end of the first drive mechanism 31 is fixedly connected to the end of the swing bracket 4 away from the swing center. In other embodiments, the first drive mechanism 31 can also be a rotation drive mechanism that drives the swing shaft 6 of the swing bracket 4 to rotate.

[0028] In this embodiment, the transmission of each coating roller and liquid pickup roller is driven by a variable frequency gear motor through a universal joint according to the coating process operating speed, which also facilitates the control of the speed change of each coating roller and liquid pickup roller. The first drive mechanism 31 and the second drive mechanism 32 can be used as a quick opening device to quickly separate the upper roller group 1 and the lower roller group 2. By actuating the first drive mechanism 31 and the second drive mechanism 32, the upper roller group 1 and the lower roller group 2 can be quickly and synchronously opened and closed when the steel strip 100 passes through the weld seam, and the upper roller group 1 and the lower roller group 2 can be completely moved to an offline position away from the steel strip 100 during maintenance operations. A liquid receiving pan (not shown in the figure) is also provided below the upper roller group 1 and the lower roller group 2 to receive dripping coating liquid or splashing flushing water during flushing to prevent liquid contamination of the working environment.

[0029] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims shall fall within the scope of protection of the present invention.

Claims

1. A horizontal four-roller automatic roller coater, characterized in that: The roller assembly comprises an upper roller assembly and a lower roller assembly, the upper roller assembly comprises an upper liquid pickup roller and an upper coating roller which are in contact with each other on the outer circumference, and the lower roller assembly comprises a lower liquid pickup roller and a lower coating roller which are in contact with each other on the outer circumference, the upper liquid pickup roller and the lower liquid pickup roller are used to dip the coating liquid and transfer the coating liquid to the upper coating roller and the lower coating roller respectively by rotating, the upper coating roller and the lower coating roller are staggered, and the upper coating roller and the lower coating roller are used to coat both sides of the strip conveyed between the two in a staggered clamping manner, the upper liquid pickup roller is configured to be relatively close to or away from the upper coating roller, and the lower liquid pickup roller is configured to be relatively close to or away from the lower coating roller, It also includes a frame, a swing bracket, a sliding bracket, a first driving mechanism and a second driving mechanism. The swing bracket is rotatably connected to the frame, and the sliding bracket is slidably connected to the frame. The swing axis of the swing bracket is parallel to the axis of the upper coating roller. The upper roller group and the lower roller group are respectively installed on the swing bracket and the sliding bracket. The first driving mechanism is transmission-connected to the swing bracket to drive the swing bracket and the upper roller group to swing, thereby adjusting the wrap angle between the upper coating roller and the lower coating roller and the belt-shaped member. The second driving mechanism is transmission-connected to the sliding bracket to drive the sliding bracket and the lower roller group to move relatively close to or away from the upper roller group.

2. The horizontal four-roller automatic roller coating machine according to claim 1, characterized in that: The upper roller group is relatively arranged obliquely above the lower roller group, the lower roller group is relatively arranged obliquely below the upper roller group, the upper coating roller is relatively arranged obliquely below the upper liquid collection roller, and the lower coating roller is relatively arranged obliquely above the lower liquid collection roller. A channel for staggered clamping of the belt-like member is formed between the upper coating roller and the lower coating roller.

3. The horizontal four-roller automatic roller coating machine according to claim 1, characterized in that: A third driving mechanism is fixedly mounted on the swing bracket, and the upper liquid pickup roller is connected to the output end of the third driving mechanism. The third driving mechanism drives the upper liquid pickup roller to approach or move away from the upper coating roller.

4. The horizontal four-roller automatic roller coating machine according to claim 3, characterized in that: The device further comprises a first pressure sensor which is installed at the output end of the third driving mechanism and is used for sensing the contact pressure between the upper liquid taking roller and the upper coating roller.

5. The horizontal four-roller automatic roller coating machine according to claim 1, characterized in that: A fourth driving mechanism is fixedly mounted on the sliding bracket, and the lower liquid taking roller is connected to the output end of the fourth driving mechanism. The fourth driving mechanism drives the lower liquid taking roller to approach or move away from the lower coating roller.

6. The horizontal four-roller automatic roller coating machine according to claim 5, characterized in that: It also includes a second pressure sensor, which is installed at the output end of the fourth driving mechanism and is used to sense the contact pressure between the lower liquid taking roller and the lower coating roller.

7. The horizontal four-roller automatic roller coater according to claim 1, characterized in that: The first driving mechanism is a lifting device, and the output end of the first driving mechanism is fixedly connected to an end of the swing bracket away from the swing center thereof.

8. The horizontal four-roller automatic roller coating machine according to claim 1, characterized in that: It also includes a coating liquid pan for holding the coating liquid. The two coating liquid pans are respectively arranged below the upper liquid taking roller and the lower liquid taking roller. The coating liquid pans are raised and lowered by the lifting device.

9. The horizontal four-roll automatic roller coating machine according to claim 1, characterized in that: A liquid receiving pan is also provided below the upper roller group and below the lower roller group.

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