A single roller coating machine

Abstract

The present invention relates to a single-roller coating machine, comprising a frame, an upper coating roller, a lower coating roller, an upper roller frame, an upper lifting mechanism, a lower roller frame, and a lower lifting mechanism. The frame is fixedly mounted on a workshop platform and has a gate-shaped or rectangular cross-section perpendicular to the running direction of the strip. The bearing seats of the upper coating roller and the lower coating roller are respectively slidably mounted on corresponding roller frames, with the sliding direction parallel to the axial direction of the coating roller body. The transmission side frame and / or the operating side frame of the frame are provided with a roller changing passage for the upper coating roller and the lower coating roller to pass through. The present invention fixes the frame on the workshop platform and adopts a gate-shaped or rectangular cross-section, thereby ensuring the structural rigidity and stability of the entire equipment and improving the uniformity of the coating. The upper coating roller and the lower coating roller are designed to be slidably mounted on the corresponding roller frames. During the roller changing operation, no other components need to be moved, making the operation convenient, time-saving, and labor-saving, and significantly improving maintenance efficiency and reducing maintenance costs.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical equipment, and in particular relates to a single-roller coating machine. Background Art

[0002] At present, in silicon steel production, single-roll coating machines are generally used to coat silicon steel with magnesium oxide coating liquid and low-viscosity insulating layer coating liquid. The structure of the single-roll coating machine is basically spraying and extrusion, that is, there is a non-transmission coating roller on the upper and lower sides of the strip, and these two coating rollers are grooved rollers. Excess coating liquid is sprayed at the entrance of the upper coating roller, lower coating roller and strip, and the film thickness of the coating is adjusted by adjusting the mutual squeezing force between the upper coating roller and the lower coating roller.

[0003] Currently, the most widely used is the C-type single-roller coating machine, whose frame is a "C"-shaped frame and a movable body. The opening of the "C"-shaped frame is convenient for entering and exiting the strip, that is, this single-roller coating machine has two working positions, one is the working position where the center of the unit is located, and the other is the roller-changing position outside the line. The upper coating roller, lower coating roller, coating roller lifting mechanism, coating liquid supply and recovery mechanism, etc. are installed on this "C"-shaped frame. The entire equipment can be moved horizontally from the working position to the roller-changing position in the direction perpendicular to the center line of the unit. When changing rollers, the entire equipment needs to be moved out of the line together, the old upper coating roller / lower coating roller is removed from the frame, and the new upper coating roller / lower coating roller is installed. After that, the entire equipment is put into the working position together, the body is positioned and locked, and then the position and pressure of the coating roller are adjusted before continuing production. This roller changing process involves many moving parts and takes a long time to change rollers, which has a certain impact on production rhythm and cost. It will also cause the coating liquid to spill around the coating machine, causing certain environmental pollution. Moreover, the "C"-shaped frame designed for the entry and exit of strip steel has poor rigidity at its opening, which indirectly affects the rigidity of the coating roller and affects the uniformity of the coating on the operating side and the transmission side. The movement of the "C"-shaped frame will also indirectly affect the installation and positioning accuracy of the upper and lower coating rollers, affecting the accuracy of the coating thickness. Summary of the Invention

[0004] The present invention relates to a single-roller coating machine, which can at least solve some of the defects of the prior art.

[0005] The present invention relates to a single-roller coating machine, comprising a frame, an upper coating roller and a lower coating roller, wherein the frame is fixedly mounted on a workshop platform and has a gate-shaped or rectangular cross-section perpendicular to the running direction of the strip steel;

[0006] The coating machine further includes an upper roller frame, an upper lifting mechanism arranged on the top of the frame and used to drive the upper roller frame to rise and fall, a lower roller frame, and a lower lifting mechanism arranged on the bottom of the frame and used to drive the lower roller frame to rise and fall;

[0007] The bearing seat of the upper coating roller is slidably arranged on the upper roller frame and the sliding direction is parallel to the axial direction of the upper coating roller body; the bearing seat of the lower coating roller is slidably arranged on the lower roller frame and the sliding direction is parallel to the axial direction of the lower coating roller body;

[0008] The transmission side frame body and / or the operating side frame body of the frame are provided with a roller changing channel for the upper coating roller and the lower coating roller to pass through.

[0009] As one of the implementation modes, the transmission side frame and the operation side frame are both door-shaped frames.

[0010] As one of the embodiments, the transmission side frame and the operating side frame are both provided with an upper guide unit for guiding the lifting movement of the upper roller frame; and / or, the transmission side frame and the operating side frame are both provided with a lower guide unit for guiding the lifting movement of the lower roller frame.

[0011] As one of the embodiments, the upper roller frame is provided with a first horizontal guide unit for guiding the sliding movement of the upper coating roller; and / or the lower roller frame is provided with a second horizontal guide unit for guiding the sliding movement of the lower coating roller.

[0012] As one of the implementation modes, both the upper roller frame and the lower roller frame are provided with a coating roller locking mechanism for limiting the sliding of the corresponding coating roller.

[0013] As one of the implementation modes, the coating roller locking mechanism includes a locking clamping plate hinged on the corresponding roller frame, and a limiting groove cooperating with the locking clamping plate is provided on the corresponding coating roller shaft end or the corresponding coating roller bearing seat.

[0014] As one of the implementation modes, a pressure detection unit is installed between the output end of the upper lifting mechanism and the upper roller frame.

[0015] As one of the implementation modes, a buffer unit is sandwiched between the output end of the lower lifting mechanism and the lower roller frame.

[0016] As one of the implementation modes, the buffer unit includes a plurality of buffer springs, and the axial direction of each buffer spring is parallel to the vertical direction.

[0017] As one of the implementation modes, a coating liquid collecting tank is arranged below the lower roller frame, and the coating liquid collecting tank is equipped with a translation guide rail, the guiding direction of the translation guide rail is parallel to the running direction of the strip steel and extends outside the frame.

[0018] The present invention has at least the following beneficial effects:

[0019] The single-roller coating machine provided by the present invention features a frame fixedly mounted on a workshop platform and adopts a gate-shaped or rectangular cross-section, ensuring the structural rigidity and stability of the entire equipment, thereby ensuring the rigidity of the coating roller during operation and improving coating uniformity. The upper and lower coating rollers are designed to slide onto their corresponding roller frames. Roller replacement requires only horizontally pulling out the old roller and pushing in the new roller, without moving other components. This facilitates operation, saves time and effort, and significantly improves maintenance efficiency and reduces costs. It also reduces environmental pollution caused by spilled coating liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of a single-roller coating machine provided in an embodiment of the present invention;

[0022] Figure 2 for Figure 1 Sectional view along AA;

[0023] Figure 3 for Figure 1 Cross-sectional view along BB. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-Figure 3 , an embodiment of the present invention provides a single-roller coating machine, comprising a frame 1, an upper coating roller 22 and a lower coating roller 32, which further comprises an upper roller frame 21, an upper lifting mechanism 23 arranged at the top of the frame 1 and used to drive the upper roller frame 21 to rise and fall, a lower roller frame 31 and a lower lifting mechanism 33 arranged at the bottom of the frame 1 and used to drive the lower roller frame 31 to rise and fall; the bearing seat of the upper coating roller 22 is slidably arranged on the upper roller frame 21 and the sliding direction is parallel to the axial direction of the upper coating roller body; the bearing seat of the lower coating roller 32 is slidably arranged on the lower roller frame 31 and the sliding direction is parallel to the axial direction of the lower coating roller body 321; the transmission side frame 11 and / or the operating side frame 12 of the frame 1 are provided with a roller changing channel for the upper coating roller 22 and the lower coating roller 32 to pass through.

[0026] The frame 1 is fixedly mounted on the workshop platform and its cross section perpendicular to the running direction of the strip is gate-shaped or rectangular. It can be understood that: when the frame 1 is not provided with a bottom plate, it is gate-shaped, and the two side frames of the frame 1 (the transmission side frame 11 and the operating side frame 12) are directly mounted on the workshop platform; when the frame 1 is provided with a bottom plate, it is rectangular, and the bottom plate is mounted on the workshop platform, and the transmission side frame 11 and the operating side frame 12 of the frame 1 are supported on the bottom plate. The strip passes between the transmission side frame 11 and the operating side frame 12 of the frame 1. The transmission side frame 11 and the operating side frame 12 are connected by a top plate, which can ensure the structural strength and working stability of the frame 1.

[0027] In one embodiment, Figure 1 The transmission-side frame 11 and the operating-side frame 12 are both door-shaped frames. As will be understood, the door-shaped frames are perpendicular to the axial directions of the upper and lower coating rollers. The space defined by the door-shaped frames serves as the entrance and exit for the upper and lower coating rollers 22 and 32, thus forming the aforementioned roller-changing passage. During roller replacement, the old and new rollers pass through the door of the operating-side frame 12, that is, between the two doorposts of the operating-side frame 12. The door-shaped frames ensure the structural strength of the frames while providing sufficient space for operations such as roller replacement, facilitating the smooth passage of the upper and lower coating rollers 22 and 32. The transmission side frame 11 also adopts a door-shaped frame. On the one hand, it provides more maintenance space for the coating machine. For example, when changing rollers, the old roller / new roller has more spare space for movement. On the other hand, it is convenient for the staff to observe the production process and equipment status more intuitively, and it is also more conducive to the connection between the transmission side equipment and the component equipment in the coating machine, such as the connection between the upper lifting mechanism 23, the lower lifting mechanism 33, the coating liquid nozzle 4, etc. and external equipment.

[0028] The upper lifting mechanism 23 and the lower lifting mechanism 33 can adopt conventional lifting drive equipment, such as hydraulic cylinders, air cylinders, screw lifts, winches, etc. The specific structure is not described here. Figure 1 and Figure 3 The transmission-side frame 11 and the operating-side frame 12 are each equipped with an upper guide unit 51 for guiding the lifting and lowering motion of the upper roller frame 21; and / or, the transmission-side frame 11 and the operating-side frame 12 are each equipped with a lower guide unit 52 for guiding the lifting and lowering motion of the lower roller frame 31. The provision of the guide units improves the stability and reliability of the lifting and lowering motion of the upper and lower roller frames 21 and 31, thereby enhancing coating quality. The upper and lower guide units 51 and 52 can employ conventional slider-rail combinations or roller-groove rail combinations.

[0029] The transmission side frame 11 and the operating side frame 12 are both door-shaped frame structures. Figure 1 , it is preferred to set the slide rails / groove rails of the upper guide unit 51 and the lower guide unit 52 on the inner edge of the door column, that is, a set of rails is set on each of the two door columns of the transmission side frame 11, and a set of rails is set on each of the two door columns of the operating side frame 12, and the two sets of rails on each side frame are arranged opposite to each other; taking the slider-slide rail matching guide structure as an example, the sliding surface of the slider is parallel to the vertical direction and perpendicular to the axial direction of the upper coating roller body 221; taking the roller-groove rail matching guide structure as an example, the axial direction of the roller is parallel to the axial direction of the upper coating roller body 221. Based on the above structure, the equipment layout of the coating machine can be made compact, and the volume and occupied space of the frame 1 can be significantly reduced. Moreover, based on the restrictions of the door-shaped frames on both sides, the lifting and lowering movements of the upper roller frame 21 and the lower roller frame 31 are more stable, thereby effectively improving the quality of the strip coating and extending the service life of the coating machine.

[0030] Continuing the structure of the above-mentioned single roller coating machine, as Figure 1-Figure 3 The upper roller frame 21 is provided with a first horizontal guide unit for guiding the sliding motion of the upper coating roller 22; and / or, the lower roller frame 31 is provided with a second horizontal guide unit for guiding the sliding motion of the lower coating roller 32. Similarly, the first and second horizontal guide units can adopt a conventional slider-slide rail matching guide structure or a roller-groove rail matching guide structure. The provision of horizontal guide units can improve the stability of the translational motion of the upper coating roller 22 and the lower coating roller 32, facilitate roller changing operations, and ensure the installation accuracy of the upper coating roller 22 and the lower coating roller 32. Optionally, a guide beam 6 is provided on the upper roller frame 21, and a slide rail / groove rail can be formed on this guide beam 6; the guide beam 6 preferably extends outside the operating side frame body 12 to facilitate roller changing operations. A guide beam 6 can also be provided on the lower roller frame 31.

[0031] Continuing with the structure of the above-mentioned single-roller coating machine, the upper roller frame 21 and the lower roller frame 31 are both provided with a coating roller locking mechanism for limiting the sliding of the corresponding coating roller. The coating roller locking mechanism is used to lock the coating roller on the corresponding roller frame to ensure that the coating roller can operate reliably during normal production. At the same time, the coating roller locking mechanism must also be able to release the above-mentioned locking state to facilitate the roller changing operation. In one embodiment, the coating roller locking mechanism includes a locking clamping plate 8 hinged to the corresponding roller frame, and a limiting groove that cooperates with the locking clamping plate 8 is provided on the corresponding coating roller shaft end or the corresponding coating roller bearing seat. By snapping the locking clamping plate 8 into the above-mentioned limiting groove, the coating roller can be locked to the corresponding roller frame. After the locking clamping plate 8 leaves the limiting groove, operations such as roller changing can be performed.

[0032] In an optional embodiment, if Figure 1A pressure detection unit 24 is installed between the output end of the upper lifting mechanism 23 and the upper roller frame 21. The pressure detection unit 24 can be a pressure sensor, etc.; through the feedback of the pressure detection unit 24, the mutual squeezing force between the upper coating roller body 221 and the lower coating roller body 321 can be controlled to obtain the coating quality that meets the requirements.

[0033] In an optional embodiment, a buffer unit 34 is provided between the output end of the lower lifting mechanism 33 and the lower roller frame 31; preferably, Figure 1 and Figure 2 The buffer unit 34 includes multiple buffer springs, each with its axial direction parallel to the vertical direction. This design maintains a relatively stable contact pressure between the lower coating roller 32 and the steel strip, enabling flexible coating of the strip and improving the uniformity of the coating thickness. Furthermore, the buffer unit 34 effectively absorbs vibrations transmitted from the lower coating roller 32, preventing damage to the strip and the coating roller caused by sudden increases in the force between the strip and the lower coating roller 32 due to factors such as the strip's shape.

[0034] In an optional embodiment, the pressure detection unit 24 and the buffer unit 34 may be interchanged.

[0035] Continuing the structure of the above-mentioned single roller coating machine, as Figure 1-Figure 3 A coating liquid collection trough 71 is disposed below the lower roller frame 31. The trough 71 is equipped with a translation guide rail 72. The translation guide rail 72 extends parallel to the strip running direction and beyond the frame 1. The trough 71 is used to collect coating liquid that drips during normal production. The translation guide rail 72 allows the trough 71 to be moved out of the frame 1 for easy cleaning.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A single-roller coating machine, comprising a frame, an upper coating roller and a lower coating roller, characterized in that: The frame is fixedly mounted on the workshop platform and its cross section perpendicular to the running direction of the strip steel is gate-shaped or rectangular; The coating machine further includes an upper roller frame, an upper lifting mechanism arranged on the top of the frame and used to drive the upper roller frame to rise and fall, a lower roller frame, and a lower lifting mechanism arranged on the bottom of the frame and used to drive the lower roller frame to rise and fall; The bearing seat of the upper coating roller is slidably arranged on the upper roller frame and the sliding direction is parallel to the axial direction of the upper coating roller body; the bearing seat of the lower coating roller is slidably arranged on the lower roller frame and the sliding direction is parallel to the axial direction of the lower coating roller body; The transmission side frame and / or the operating side frame of the frame are provided with a roller changing channel for the upper coating roller and the lower coating roller to pass through; The upper roller frame is provided with a first horizontal guide unit for guiding the sliding movement of the upper coating roller; and / or the lower roller frame is provided with a second horizontal guide unit for guiding the sliding movement of the lower coating roller; the upper roller frame is provided with a first guide beam, the first horizontal guide unit is formed on the first guide beam, and the first guide beam extends to the outside of the operating side frame body, and / or the lower roller frame is provided with a second guide beam, the second horizontal guide unit is formed on the second guide beam, and the second guide beam extends to the outside of the operating side frame body; The upper roller frame and the lower roller frame are both provided with a coating roller locking mechanism for limiting the sliding of the corresponding coating roller, and the coating roller locking mechanism includes a locking clamping plate hinged on the corresponding roller frame, and a limiting groove that cooperates with the locking clamping plate is provided on the corresponding coating roller shaft end or the corresponding coating roller bearing seat; A coating liquid collecting trough is arranged below the lower roller frame. The coating liquid collecting trough is equipped with a translation guide rail. The guiding direction of the translation guide rail is parallel to the running direction of the strip steel and extends outside the frame.

2. The single-roller coating machine according to claim 1, characterized in that: The transmission side frame and the operation side frame are both door-shaped frames.

3. The single-roller coating machine according to claim 1 or 2, characterized in that: The transmission side frame and the operating side frame are both provided with an upper guide unit for guiding the lifting movement of the upper roller frame; and / or, the transmission side frame and the operating side frame are both provided with a lower guide unit for guiding the lifting movement of the lower roller frame.

4. The single-roll coating machine according to claim 1, characterized in that: A pressure detection unit is installed between the output end of the upper lifting mechanism and the upper roller frame.

5. The single-roll coating machine according to claim 1, characterized in that: A buffer unit is sandwiched between the output end of the lower lifting mechanism and the lower roller frame.

6. The single-roll coating machine according to claim 5, characterized in that: The buffer unit includes a plurality of buffer springs, and the axial direction of each buffer spring is parallel to the vertical direction.

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