Device for improving uniformity of hot-dip galvanizing coating

Abstract

The utility model discloses a device for improving the uniformity of a hot-dip galvanizing coating, which comprises a rack and a driving assembly, the rack is provided with a plurality of upper conical blocks, the rack is rotatably connected with mounting columns, the driving assembly is used for driving the plurality of mounting columns to rotate, the mounting columns are provided with the conical blocks, the conical blocks are internally provided with cross-shaped through grooves, and the cross-shaped through grooves are communicated with the mounting columns. And trapezoidal blocks are clamped at four forked ends of the cross-shaped through groove in a sliding manner. By screwing the bolts, the extrusion blocks on the bolts extrude the trapezoidal blocks, so that the plane parts on the four extruded trapezoidal blocks can extrude and fix the inner wall of the square steel pipe, and then the scraper blade is driven by the linear actuator to scrape off the redundant coating on the outer wall of the steel pipe, so that the coating on the outer wall of the square steel pipe is uniform; after the bolts are screwed, two of the four extruded trapezoidal blocks can extrude and fix the inner wall of the rectangular steel pipe, and then the coating on the outer wall of the rectangular steel pipe can be scraped off through the scraping plate, so that the uniformity of the coating is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot-dip galvanizing coating, in particular to a device for improving the uniformity of hot-dip galvanizing coating. Background Art

[0002] Hot-dip galvanizing is to make the molten metal react with the iron matrix to produce an alloy layer, so that the matrix and the coating are combined. Hot-dip galvanizing is to first pickle the steel parts to remove the iron oxide on the surface of the steel parts. After pickling, they are cleaned in an ammonium chloride or zinc chloride aqueous solution or a mixed ammonium chloride and zinc chloride aqueous solution tank, and then sent to the hot-dip plating tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion, and long service life.

[0003] During hot-dip galvanizing, the workpiece to be dipped needs to be fixed on a lifting device, and the workpiece is sent into the inner side of the plating pool through the lifting device. However, when the steel pipe is plated, after the steel pipe is taken out of the plating pool, some parts of the surface will sag. The operator needs to scrape off the excess zinc from the sag part, which is very inconvenient.

[0004] In the prior art, there is a device with patent number CN217077761U for improving the uniformity of hot-dip galvanized steel pipe coating. The device uses an upper positioning cone and a lower positioning cone to squeeze and fix the circular steel pipe to scrape off the excess coating on the surface of the steel pipe, but it is not suitable for square steel pipes (square, rectangular), making its practicality low. Utility Model Content

[0005] Based on this, it is necessary to provide a device for improving the uniformity of hot-dip galvanizing coating in response to the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a device for improving the uniformity of hot-dip galvanizing coating, including a frame and a driving assembly, wherein the frame is provided with a plurality of upper conical blocks, the frame is rotatably connected with a mounting column, the driving assembly is used to drive the plurality of mounting columns to rotate, the mounting columns are provided with conical blocks, a cross slot is provided in the conical blocks, four bifurcated ends of the cross slot are slidably connected with trapezoidal blocks, the trapezoidal blocks are provided with chamfers, a spring is provided in the cross slot, the spring is connected with the trapezoidal blocks, a bolt is rotatably connected with the mounting column, an extrusion block is rotatably connected with the top of the bolt, the extrusion block is matched with the trapezoidal block, the conical blocks correspond to the upper conical blocks one by one, a linear actuator one is installed on the frame, a moving frame is slidably connected with the frame, the output end of the linear actuator one is connected with the moving frame, a linear actuator two is installed on the moving frame, a J-shaped plate is slidably connected with the moving frame, the output end of the linear actuator two is connected with the J-shaped plate, a plurality of scrapers are installed on the J-shaped plate, the scrapers are inclined, and the scrapers correspond to the conical blocks one by one.

[0007] Preferably, a limit block is installed at the bottom of the bolt, and a plurality of limit columns are rotatably connected to the frame, the limit columns correspond to the limit blocks one by one, the limit columns are provided with limit grooves, the limit blocks are plugged into the limit grooves, a rotation drive device 1 is installed on the frame, a pulley is installed at the output end of the rotation drive device 1, and the pulley is connected to the plurality of limit columns through a belt drive assembly.

[0008] Preferably, extrusion grooves are provided on both sides of the four bifurcated ends of the cross groove, and extruded blocks corresponding to the extrusion grooves are installed on the trapezoidal block. The extruded blocks slide in the extrusion grooves, and a spring is installed in the extrusion groove, and one end of the spring is connected to the extruded block.

[0009] Preferably, the driving assembly includes a second rotating driving device, a sprocket is installed at the output end of the second rotating driving device, and the sprocket is connected to a plurality of mounting columns through a chain transmission assembly.

[0010] Preferably, an extrusion frame is slidably connected to the frame, a linear actuator three is installed on the frame, an output end of the linear actuator three is transmission-connected to the extrusion frame, and a plurality of upper conical blocks are installed on the extrusion frame.

[0011] Preferably, the output end of the rotary drive device 1 is connected to the pulley through a coupling.

[0012] Preferably, the output end of the second rotary drive device is connected to the sprocket through a coupling.

[0013] Compared with the prior art, this technical solution has at least one of the following beneficial effects:

[0014] By screwing the bolt, the extrusion block on it squeezes the trapezoidal block, so that the flat parts on the four extruded trapezoidal blocks can squeeze and fix the inner wall of the square steel pipe. Then, the linear actuator drives the scraper to scrape off the excess coating on the outer wall of the steel pipe, so that the coating on the outer wall of the square steel pipe is uniform.

[0015] After tightening the bolt, two of the four extruded trapezoidal blocks can be used to extrude and fix the inner wall of the rectangular steel pipe. Afterwards, the coating on the outer wall of the rectangular steel pipe can also be scraped off by a scraper to improve the uniformity of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0017] Figure 2 This is an exploded view of a conical block according to an embodiment of the utility model;

[0018] Figure 3 A side cross-sectional view of an embodiment of the utility model;

[0019] Figure 4 For an embodiment of the utility model Figure 3 Enlarged view of point A in the middle;

[0020] In the figure, 1, frame; 2, mounting column; 3, tapered block; 4, cross groove; 5, trapezoidal block; 6, spring; 7, bolt; 8, extrusion block; 9, limit block; 10, limit column; 11, limit groove; 12, rotary drive device 1; 13, pulley; 14, upper tapered block; 15, linear actuator 1; 16, moving frame; 17, scraper; 18, extrusion groove; 19, extruded block; 20, rotary drive device 2; 21, sprocket; 22, extrusion frame; 23, linear actuator 3; 24, linear actuator 2; 25, J-plate. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] See also Figures 1 to 4 The embodiment of the present application provides a device for improving the uniformity of hot-dip galvanizing coating, including a frame 1 and a driving assembly, wherein the frame 1 is provided with a plurality of upper conical blocks 14, and a mounting column 2 is rotatably connected to the frame 1, and the driving assembly is used to drive the plurality of mounting columns 2 to rotate, and a conical block 3 is installed on the mounting column 2, and a cross groove 4 is provided in the conical block 3, and trapezoidal blocks 5 are slidably connected to the four bifurcated ends of the cross groove 4, and the trapezoidal blocks 5 are provided with chamfers, and a spring 6 is provided in the cross groove 4, and the spring 6 is connected to the trapezoidal block 5, and a bolt 7 is rotatably connected to the mounting column 2, and an extrusion block 8 is rotatably connected to the top of the bolt 7, and the extrusion block 8 is connected to the trapezoidal Block 5 is arranged in cooperation, the conical block 3 corresponds to the upper conical block 14 one by one, a linear actuator 15 is installed on the frame 1, the linear actuator 15 can be an electric cylinder, a mobile frame 16 is slidably connected to the frame 1, the output end of the linear actuator 15 is connected to the mobile frame 16, a linear actuator 24 is installed on the mobile frame 16, the linear actuator 24 can be an electric cylinder, a J-shaped plate 25 is slidably connected to the mobile frame 16, the output end of the linear actuator 24 is connected to the J-shaped plate 25, a plurality of scrapers 17 are installed on the J-shaped plate 25, the scrapers 17 are inclined, and the scrapers 17 correspond to the conical blocks 3 one by one.

[0023] In this embodiment, when the coating of the circular steel pipe is evenly scraped, the circular steel pipe is squeezed and fixed by the upper conical block 14 and the conical block 3, and then the conical block 3 on the mounting column 2 is driven by the driving component to rotate, so that the circular steel pipe is rotated, and then the scraper 17 on the moving frame 16 is driven by the linear actuator 15 to slowly move downward, so that the coating of the circular steel pipe can be evenly scraped; when the coating of the square steel pipe is evenly scraped, the bolt 7 is manually rotated to drive the extrusion block 8 abutting against the trapezoidal block 5 to move upward, and the four trapezoidal blocks 5 in the cross groove 4 are squeezed out by the chamfered setting on the trapezoidal block 5, so that the inner wall of the square steel pipe can be squeezed and fixed by the stepped plane on the trapezoidal block 5, and then the linear actuator 15 drives The scraper 17 on the movable frame 16 moves up and down to evenly scrape the coating on the outer wall of the square steel pipe. The driving component drives the square steel pipe on the mounting column 2 to rotate to different surfaces, so that the scraper 17 can evenly scrape different surfaces of the square steel pipe; when the inner wall of the rectangular steel pipe is squeezed and fixed, only two trapezoidal blocks 5 abut and squeeze the inner wall of the steel pipe, but the scraper 17 only scrapes the coating on the outer wall of the steel pipe, so it will not cause too much external force to the steel pipe to cause the steel pipe to deviate; the J-plate 25 is driven to move by the linear actuator 24, so that when the square steel pipe rotates, the scraper 17 will not touch the corners of the steel pipe; after the bolt 7 drives the extrusion block 8 to move downward, the trapezoidal block 5 can be pushed and squeezed by the spring 6 and retracted back into the cross groove 4.

[0024] In some embodiments, in order to facilitate batch rotation of multiple bolts 7 to improve efficiency, a limit block 9 is installed at the bottom of the bolt 7, and a plurality of limit columns 10 are rotatably connected to the frame 1. The limit columns 10 correspond one-to-one to the limit blocks 9. The limit columns 10 are provided with limit grooves 11, and the limit blocks 9 are plugged into the limit grooves 11. A rotation drive device 12 is installed on the frame 1. The rotation drive device 12 can be a servo motor without a self-locking function. A pulley 13 is installed at the output end of the rotation drive device 12, and the pulley 13 is connected to the plurality of limit columns 10 through a belt drive assembly. By rotating the driving device 12 through the pulley 13 installed thereon, the belt transmission assembly drives several limit columns 10 to rotate, so that the limit block 9 engaged in the limit groove 11 can drive the bolt 7 to rotate. During the rotation, the bolt 7 drives the limit block 9 to move up and down, but the limit block 9 is still driven by the limit column 10 in the limit groove 11; when the driving assembly drives the installation column 2 to rotate, the bolt 7, the limit block 9 and the limit column 10 will rotate with the installation column 2, but when the limit block 9 is driven to drive the bolt 7 to rotate, the driving assembly together with the installation column 2 will not rotate.

[0025] In some embodiments, in order to facilitate the installation of the spring 6, extrusion grooves 18 are provided on both sides of the four forked ends of the cross groove 4, and extruded blocks 19 corresponding to the extrusion grooves 18 are installed on the trapezoidal block 5. The extruded block 19 slides in the extrusion groove 18, and the spring 6 is installed in the extrusion groove 18, and one end of the spring 6 is connected to the extruded block 19.

[0026] In some embodiments, in order to prevent the mounting column 2 from rotating with the bolt 7 when it is driven, a driving assembly is provided including a second rotating driving device 20, which may be a servo motor, and a sprocket 21 is installed at the output end of the second rotating driving device 20, and the sprocket 21 is connected to the plurality of mounting columns 2 through a chain transmission assembly. The transmission between the plurality of mounting columns 2 is driven by the sprocket 21 and the chain transmission assembly, so that the mounting column 2 can be driven to drive the steel pipe to rotate, and the sprocket 21 and the chain transmission assembly limit the mounting column 2 so that it does not rotate with the bolt 7.

[0027] In some embodiments, for placing the steel pipe, an extrusion frame 22 is provided on the frame 1 and is slidably connected thereto. A linear actuator 3 23 is installed on the frame 1. The linear actuator 3 23 may be an electric cylinder. The output end of the linear actuator 3 23 is transmission-connected to the extrusion frame 22. A plurality of upper conical blocks 14 are installed on the extrusion frame 22. The linear actuator 3 23 drives the extrusion frame 22 to move up and down, so that the upper conical blocks 14 can move, thereby facilitating the extrusion and fixing of both ends of the steel pipe.

[0028] In some embodiments, in order to facilitate the rotation driving device 12 to drive the pulley 13 to rotate, the output end of the rotation driving device 12 is connected to the pulley 13 through a coupling.

[0029] In some embodiments, in order to facilitate the second rotary driving device 20 to drive the sprocket 21 to rotate, the output end of the second rotary driving device 20 is connected to the sprocket 21 through a coupling.

[0030] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A device for improving the uniformity of hot-dip galvanizing coating, comprising a frame (1) and a drive assembly, wherein the frame (1) is provided with a plurality of upper conical blocks (14), characterized in that: The frame (1) is rotatably connected to a mounting column (2), the driving assembly is used to drive the plurality of mounting columns (2) to rotate, a conical block (3) is installed on the mounting column (2), a cross groove (4) is provided in the conical block (3), four bifurcated ends of the cross groove (4) are slidably connected to a trapezoidal block (5), a chamfer is provided on the trapezoidal block (5), a spring (6) is provided in the cross groove (4), the spring (6) is connected to the trapezoidal block (5), a bolt (7) is rotatably connected to the mounting column (2), a pressing block (8) is rotatably connected to the top of the bolt (7), the pressing block (8) is arranged in cooperation with the trapezoidal block (5), and the conical block (3) corresponds to the upper conical block (14) one by one, a linear actuator one (15) is installed on the frame (1), a mobile frame (16) is slidably connected to the frame (1), the output end of the linear actuator one (15) is connected to the mobile frame (16), a linear actuator two (24) is installed on the mobile frame (16), a J-shaped plate (25) is slidably connected to the mobile frame (16), the output end of the linear actuator two (24) is connected to the J-shaped plate (25), a plurality of scrapers (17) are installed on the J-shaped plate (25), the scrapers (17) are inclined, and the scrapers (17) correspond to the conical blocks (3) one by one.

2. The device for improving the uniformity of hot-dip galvanizing coating according to claim 1, characterized in that: A limit block (9) is installed at the bottom of the bolt (7), and a plurality of limit columns (10) are rotatably connected to the frame (1). The limit columns (10) correspond to the limit blocks (9) one by one. The limit columns (10) are provided with limit grooves (11), and the limit blocks (9) are plugged into the limit grooves (11). A rotary drive device (12) is installed on the frame (1), and a pulley (13) is installed at the output end of the rotary drive device (12). The pulley (13) is connected to the plurality of limit columns (10) through a belt drive assembly.

3. The device for improving the uniformity of hot-dip galvanizing coating according to claim 1, characterized in that: The four bifurcated ends of the cross groove (4) are each provided with an extrusion groove (18) on both sides, and an extruded block (19) corresponding to the extrusion groove (18) is mounted on the trapezoidal block (5), the extruded block (19) slides in the extrusion groove (18), and the spring (6) is mounted in the extrusion groove (18), and one end of the spring (6) is connected to the extruded block (19).

4. The device for improving the uniformity of hot-dip galvanizing coating according to claim 1, characterized in that: The driving assembly comprises a second rotating driving device (20), the output end of which is provided with a sprocket (21), which is drivingly connected to a plurality of mounting columns (2) via a chain transmission assembly.

5. The device for improving the uniformity of hot-dip galvanizing coating according to claim 1, characterized in that: An extrusion frame (22) is slidably connected to the frame (1), a linear actuator three (23) is installed on the frame (1), an output end of the linear actuator three (23) is transmission-connected to the extrusion frame (22), and a plurality of upper conical blocks (14) are installed on the extrusion frame (22).

6. The device for improving the uniformity of hot-dip galvanizing coating according to claim 2, characterized in that: The output end of the rotary drive device 1 (12) is transmission-connected to the pulley (13) via a coupling.

7. The device for improving the uniformity of hot-dip galvanizing coating according to claim 4, characterized in that: The output end of the second rotary drive device (20) is transmission-connected to the sprocket (21) via a coupling.

Images