A straight head machine working roll on-line polishing tool

Abstract

The utility model relates to a kind of straight head machine work roll on-line polishing tool, belong to metallurgical industry continuous pickling line or cold rolling production line technical field.The technical scheme is: containing telescopic handle (5) and polishing head (6), the polishing head (6) contains polishing oil stone (1), support spring (2), fixed frame (3) and wooden gasket (4), fixed frame (3) is fixed on wooden gasket (4), several support springs (2) are equipped in fixed frame (3), and polishing oil stone (1) is set on support spring (2);The lower end of several support springs (2) in fixed frame (3) is fixed on wooden gasket (4), and polishing oil stone (1) is placed on support spring (2).The utility model has the beneficial effects that when mill scale, dust etc. Enter straight head machine pollution work roll, cause the small protrusion of work roll, can realize on-line polishing, avoid to cause the mark of steel strip, reduce processing time, promote safe and efficient production.

Description

Technical Field

[0001] This utility model relates to an online grinding tool for the working rolls of a straight-head mill, belonging to the technical field of continuous pickling lines or cold rolling production lines in the metallurgical industry. Background Technology

[0002] With the transformation and upgrading of the steel industry, products are increasingly moving towards high-end sectors such as automobiles, home appliances, hardware tools, and precision instruments. Therefore, in addition to stringent requirements for product performance and dimensional accuracy, customers also pay close attention to surface quality. Cold-rolled steel sheets and pickled steel sheets are common intermediate or end products; excellent surface finish is essential to ensure the quality of subsequent coating, annealing, or direct customer use. However, both pickled and cold-rolled steel sheets are obtained by pickling and rolling hot-rolled steel sheets. Hot-rolled steel sheets often have severe iron oxide scale on the surface, poor head and tail shape, and are prone to dust and impurities adhering to the outer ring during handling and storage.

[0003] The straightening mill is a crucial piece of equipment in continuous pickling or cold rolling production lines. It improves the head and tail strip profile and facilitates strip threading, and is located adjacent to the uncoiler. Due to the harsh environment, iron oxide scale and dust easily enter the straightening mill and contaminate the work rolls. Additionally, poor strip profiles can easily scrape against the straightening mill's work rolls, causing small protrusions. If these protrusions are not addressed promptly, they can leave marks on the strip, especially noticeable on mild steels like DD11, DD12, SPHC, and SPHE after pickling. To prevent impurities from adhering to the straightening mill's work rolls or causing protrusions that lead to strip marks, production lines typically choose maintenance time to remove the rolls for polishing. This process is time-consuming and impacts production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide an online grinding tool for the working rolls of a straightening machine. When iron oxide scale, dust, or other contaminates the working rolls of the straightening machine, causing small protrusions on the working rolls, online grinding can be achieved, avoiding scratches on the strip steel, reducing processing time, promoting safe and efficient production, and solving the problems existing in the background technology.

[0005] The technical solution of this utility model is:

[0006] An online grinding tool for the working roller of a straight-head machine includes a retractable handle and a grinding head fixedly connected to the retractable handle. The grinding head includes a grinding stone, a support spring, a fixing frame and a wooden pad. The fixing frame is fixed on the wooden pad, and a plurality of support springs are provided inside the fixing frame. The grinding stone is placed on the support springs.

[0007] The lower ends of several support springs within the fixed frame are fixed to wooden pads, and a polishing stone is placed on top of the support springs.

[0008] The fixed frame contains four evenly arranged support springs.

[0009] The outer contour of the polishing stone is smaller than that of the fixed frame.

[0010] The polishing stone and the fixing frame are both rectangular structures that cooperate with each other.

[0011] In the free state, the upper surface of the polishing stone is higher than the edge of the fixed frame, and the lower surface is lower than the edge of the fixed frame.

[0012] This invention uses a fixed frame to fix the polishing stone, while a spring supports the stone. In use, the working roller of the straightening machine rotates so that the area to be polished faces downwards. The tool is then placed between the upper and lower rollers of the straightening machine. The upper roller is then pressed down to a certain height so that the polishing stone contacts and is subjected to force. The working roller is then polished by reciprocatingly pulling the handle connected to the fixed frame.

[0013] The beneficial effects of this utility model are: when iron oxide scale, dust, etc. enter the straightening machine and contaminate the working roller, causing small protrusions on the working roller, online grinding can be achieved, avoiding dents on the strip steel, reducing processing time, and promoting safe and efficient production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the grinding head of this utility model;

[0016] Figure 3 This is a front view of the utility model in use;

[0017] Figure 4 This is a side view of the utility model in use;

[0018] In the diagram: 1. Polishing stone; 2. Supporting spring; 3. Fixing frame; 4. Wooden pad; 5. Telescopic handle; 6. Polishing head; 7. Upper roller; 8. Lower roller. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and examples.

[0020] See attached document Figure 1-4 A tool for online grinding of the working roller of a straight head machine includes a retractable handle 5 and a grinding head 6 fixedly connected to the retractable handle 5. The grinding head 6 includes a grinding stone 1, a support spring 2, a fixing frame 3 and a wooden pad 4. The fixing frame 3 is fixed on the wooden pad 4. Several support springs 2 are provided inside the fixing frame 3. The grinding stone 1 is set on the support springs 2.

[0021] Reference Figure 1-4 The tool includes a retractable handle 5 and a grinding head 6, wherein the grinding head 6 comprises a grinding stone 1, a support spring 2, a fixing frame 3, and a wooden pad 4, wherein:

[0022] The polishing stone 1 is the core component of this tool. Its dimensions are: length 195mm, width 145mm, thickness 30mm, and grit size 120-600 mesh.

[0023] The fixed frame 3 is welded from ordinary steel plates. Its dimensions are: 200mm in length, 150mm in width, and 110mm in height. The steel plate thickness is 3.0-4.0mm to ensure sufficient rigidity and prevent deformation.

[0024] Wooden spacer 4 is made of pine or birch wood, with a thickness of 10-20mm. It is embedded in the bottom layer for fixation.

[0025] The support spring 2 is made of 65Mn, with a free height of 80mm, a compression height of 70mm, a wire diameter of d=7mm, a mean diameter of D=70mm, and the ends are tightly ground flat. There are a total of four springs, which are evenly distributed at the bottom and fixed on the wooden pad 4. The polishing oilstone 1 is placed on the top of the support spring 2.

[0026] The handle connecting to the fixed frame 3 is designed as a telescopic handle 5, which can be adjusted in length according to the space. The handle is made of iron rod with a diameter of 15-25mm. Holes are drilled at 300mm intervals on the iron rod. The part connecting to the handle is a hollow iron pipe with a wall thickness of 1.8-2.5mm and an inner diameter of φ16-26mm. Holes are drilled at 300mm intervals on the pipe.

[0027] When using this tool for polishing, adjust the telescopic handle to the appropriate length, and then insert the tool between the upper roller 7 and the lower roller 8 of the straightening machine, as shown in the attached diagram. Figure 3 As shown, the upper roller is the working roller, and the lower roller is the support roller. Adjust the height of the upper roller 7 until it contacts the grinding stone 1. The height of the upper roller can be adjusted according to the force applied, as shown in the attached diagram. Figure 4 As shown, the polishing stone 1 should not be fully pressed into the fixed frame 3 to avoid excessive force on the tool, making it difficult to pull or damaging the parts of the polishing tool. After adjusting the roller height, the handle can be pulled back and forth to polish and smooth out the bumps.

Claims

1. An online grinding tool for the working roller of a straight-head machine, characterized in that: It includes a retractable handle (5) and a grinding head (6) fixedly connected to the retractable handle (5). The grinding head (6) includes a grinding stone (1), a support spring (2), a fixing frame (3) and a wooden pad (4). The fixing frame (3) is fixed on the wooden pad (4). Several support springs (2) are provided inside the fixing frame (3). The grinding stone (1) is set on the support springs (2).

2. The online grinding tool for the working roller of a straight-head machine according to claim 1, characterized in that: The lower ends of several support springs (2) in the fixed frame (3) are fixed on wooden pads (4), and a polishing stone (1) is placed on the support springs (2).

3. The online grinding tool for the working roller of a straight-head machine according to claim 2, characterized in that: The support springs (2) inside the fixed frame (3) are four evenly arranged springs.

4. The online grinding tool for the working roller of a straight-head machine according to claim 1, characterized in that: The outer contour of the polishing stone (1) is smaller than that of the fixed frame (3).

5. The online grinding tool for the working roller of a straight-head machine according to claim 4, characterized in that: The polishing stone (1) and the fixing frame (3) are rectangular structures that cooperate with each other.

6. The online grinding tool for the working roller of a straight-head machine according to claim 1, characterized in that: In the free state, the upper surface of the polishing stone (1) is higher than the edge height of the fixed frame (3), and the lower surface is lower than the edge height of the fixed frame (3).

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