A precision doctor blade for high-chromium cast iron roll

Abstract

This utility model discloses a precision scraper for high-chromium cast iron rolls, relating to the field of roll surface treatment tools. It includes a fixed housing, a telescopic handle structure, and a detachable scraper head structure. The telescopic handle structure includes a hollow handle, an adjusting screw inside the hollow handle, a telescopic handle threadedly connected to the adjusting screw, a self-locking control component, and a guide component. The detachable scraper head structure includes a scraper holder, a double-ended stud inserted transversely into the scraper holder, a scraper head inserted into the double-ended stud, and two butterfly locking nuts threaded sequentially to the two threaded ends of the double-ended stud. The scraper holder is fixedly connected to the bottom outer wall of the telescopic handle. This utility model features a telescopic handle structure, allowing precise adjustment of the scraper head's height relative to the roll surface, thus ensuring the precision of the scraper operation and meeting the scraping requirements of different high-chromium cast iron roll surfaces. The detachable scraper head structure facilitates scraper head replacement.

Description

Technical Field

[0001] This utility model relates to the field of surface treatment tools for rolling mill rolls, and in particular to a precision scraper for high-chromium cast iron rolling mill rolls. Background Technology

[0002] High-chromium cast iron rolls are widely used in steel rolling processes, and their surface quality has a crucial impact on the quality of rolled products. During the processing and maintenance of the rolls, scraping equipment equipped with scrapers is required to clean and finish the roll surface.

[0003] However, the scrapers used in existing scraping equipment cannot precisely adjust the height of the scraper head relative to the roll surface when processing high-chromium cast iron rolls, which affects the precision of the scraper operation and makes it difficult to meet the high-precision processing requirements of the high-chromium cast iron roll surface. Furthermore, the scraper head is inconvenient to replace after it wears out. Utility Model Content

[0004] The purpose of this invention is to solve the problems of existing scraping equipment, which cannot accurately adjust the height of the scraper head relative to the roll surface when processing high-chromium cast iron rolls, affecting the precision of the scraper's operation, making it difficult to meet the high-precision processing requirements of the high-chromium cast iron roll surface, and the inconvenience of replacing the scraper head after wear. Therefore, a precision scraper for high-chromium cast iron rolls is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A precision scraper for high-chromium cast iron rolls includes a fixed shell, a telescopic tool holder structure, and a detachable tool head structure. The telescopic tool holder structure includes a hollow tool holder, an adjusting screw disposed inside the hollow tool holder, a telescopic tool holder threadedly connected to the adjusting screw, a self-locking control component, and a guide component.

[0007] The detachable cutter head structure includes a cutter holder, a double-ended stud inserted transversely through the cutter holder, a scraper head that is inserted and engaged with the double-ended stud, and two butterfly locking nuts that are sequentially threaded to the two threaded ends of the double-ended stud. The cutter holder is fixedly connected to the bottom outer wall of the telescopic cutter handle.

[0008] As a preferred technical solution, the self-locking control assembly includes a control shaft rotatably mounted in a fixed housing, a worm gear fixedly mounted on the control shaft, and a worm wheel fixedly mounted on the top of an adjusting screw.

[0009] The above structure facilitates the control of the rotation of the adjusting screw inside the hollow tool holder.

[0010] As a preferred technical solution, the worm and worm wheel mesh with each other and are both located inside the fixed housing, and a rotating cap is fixedly connected to the outer wall of one end of the control shaft.

[0011] With the above structure, the self-locking performance of the worm gear and worm wheel after meshing allows the adjusting screw to lock automatically after rotation, which helps to ensure the stability of the telescopic tool holder after extension and retraction, and the rotating cap makes it easy to manually drive the control shaft to rotate.

[0012] As a preferred technical solution, the top outer wall of the fixed shell is fixedly connected to a bearing seat by bolts, and the top end of the adjusting screw is connected to the inner wall of the bearing seat through a bearing.

[0013] With the above-described structure, the stability of the adjusting screw rotation can be guaranteed by the connection effect of the bearing housing.

[0014] As a preferred technical solution, the guiding component includes a guide opening on a hollow tool holder, with evenly distributed scale lines engraved on the front inner wall of the guide opening, and a guide member welded to the upper outer wall of the telescopic tool holder, with the outer wall of the guide member slidably connected to the inner wall of the guide opening.

[0015] With the above-described structure and the guiding effect of the guiding component, it can be ensured that after the adjusting screw rotates, the telescopic tool holder connected to it by threads can run stably in a straight line.

[0016] As a preferred technical solution, the upper part of the scraper head is provided with a socket adapted to the double-ended stud, and the two wing-shaped locking nuts are respectively fastened to the outer walls of the two sides of the blade holder.

[0017] With the above structure, after the double-ended studs are inserted, they can be locked and fixed using two wing-shaped locking nuts.

[0018] The beneficial effects of this utility model are as follows:

[0019] This utility model features a telescopic blade holder structure, which allows for precise adjustment of the height of the scraper head relative to the roll surface, thereby ensuring the precision of the scraper operation and meeting the scraping requirements of different high-chromium cast iron roll surfaces. It also features a detachable blade head structure, which allows the scraper head to be removed simply by loosening the two butterfly locking nuts and pulling out the double-ended stud, thus facilitating the replacement of the scraper head. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0022] Figure 2 This is a cross-sectional view of the vertical section of the hollow tool holder of this utility model;

[0023] Figure 3 This is a top view of the self-locking control component of this utility model.

[0024] Figure 4 This is a schematic diagram of the vertical cross-sectional structure of the telescopic knife holder structure of this utility model;

[0025] Figure 5 This is a three-dimensional disassembled structural diagram of the detachable cutter head structure of this utility model.

[0026] In the diagram: 1. Fixed housing; 2. Hollow tool holder; 3. Adjusting screw; 4. Telescopic tool holder; 5. Control shaft; 6. Worm gear; 7. Worm wheel; 8. Rotary cap; 9. Bearing seat; 10. Guide port; 11. Guide component; 12. Tool holder; 13. Double-ended stud; 14. Scraper head; 15. Insertion hole; 16. Wing lock nut. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figure 1-5 This embodiment discloses a precision scraper for high-chromium cast iron rolls, which includes a fixed shell 1, a telescopic handle structure and a detachable cutter head structure;

[0029] Specifically, the telescopic tool holder structure includes a hollow tool holder 2, an adjusting screw 3 located inside the hollow tool holder 2, a telescopic tool holder 4 threadedly connected to the adjusting screw 3, a self-locking control component, and a guide component;

[0030] Furthermore, the self-locking control assembly includes a control shaft 5 rotatably mounted in the fixed housing 1, a worm 6 fixedly mounted on the control shaft 5, and a worm wheel 7 fixedly mounted on the top of the adjusting screw 3. The worm 6 and the worm wheel 7 mesh with each other and are both located in the fixed housing 1. A rotating cap 8 is fixedly connected to the outer wall of one end of the control shaft 5. The self-locking performance of the meshing of the worm 6 and the worm wheel 7 enables the adjusting screw 3 to automatically lock after rotation, which helps to ensure the stability of the telescopic tool holder 4 after extension and retraction. The rotating cap 8 facilitates manual driving of the control shaft 5 to rotate.

[0031] Furthermore, the guiding component includes a guide opening 10 on the hollow tool holder 2, and a guide 11 welded to the upper outer wall of the telescopic tool holder 4. The outer wall of the guide 11 is slidably connected to the inner wall of the guide opening 10. Through the guiding effect of the guiding component, it can be ensured that after the adjusting screw 3 is rotated, the telescopic tool holder 4 connected to it by the thread can run stably in a straight line. In order to ensure the accuracy during the telescopic adjustment process, the inner wall of the front side of the guide opening 10 is engraved with evenly distributed scale lines. Accurate measurement can be achieved by observing the position of the guide 11 and the scale lines.

[0032] Specifically, the detachable cutter head structure includes a cutter holder 12, a double-ended stud 13 inserted transversely through the cutter holder 12, a scraper head 14 that is inserted and engaged with the double-ended stud 13, and two butterfly locking nuts 16 that are sequentially threaded to the two threaded ends of the double-ended stud 13. The cutter holder 12 is fixedly connected to the bottom outer wall of the telescopic cutter handle 4.

[0033] Furthermore, the top outer wall of the fixed shell 1 is fixedly connected to the bearing seat 9 by bolts, and the top end of the adjusting screw 3 is connected to the inner wall of the bearing seat 9 by the bearing. Therefore, under the connection effect of the bearing seat 9, the stability of the rotation of the adjusting screw 3 can be guaranteed.

[0034] Furthermore, the upper part of the scraper head 14 is provided with an insertion hole 15 that is compatible with the double-ended stud 13, and two butterfly locking nuts 16 are respectively fastened to the outer walls on both sides of the blade holder 12. Thus, after the double-ended stud 13 is inserted, it can be locked and fixed by using two butterfly locking nuts 16.

[0035] The working principle of this embodiment is as follows: First, the fixing shell 1 is fixed to the slider end of the scraping equipment with bolts. The slider end of the scraping equipment will drive the entire scraper to reciprocate on the surface of the roll. After the entire scraper is installed, the worm gear 6 on the control shaft 5 is driven to rotate forward and backward by the rotating cap 8. Then, the worm wheel 7 meshing with the worm gear 6 will drive the adjusting screw 3 to rotate forward and backward. Then, under the guidance of the guide component, the telescopic handle 4 threaded to the adjusting screw 3 will perform telescopic movement in the hollow handle 2. During the telescopic process, the position of the guide 11 and the scale line on the inner wall of the guide port 10 is observed to achieve accurate measurement. In this way, the height of the scraper head 14 relative to the roll surface can be accurately adjusted, thereby ensuring the precision of the scraper operation and meeting the scraping requirements of different high-chromium cast iron roll surfaces.

[0036] Secondly, by inserting the scraper head 14 into the blade holder 12, and then passing the double-ended stud 13 through the insertion hole 15, the initial insertion effect is achieved. Finally, two wing-shaped locking nuts 16 are used to tighten both ends of the double-ended stud 13 to achieve the effect of fixing the scraper head 14. In subsequent disassembly, the scraper head 14 can be removed simply by loosening the two wing-shaped locking nuts 16 and pulling out the double-ended stud 13. This facilitates the replacement of the scraper head 14.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A precision doctor blade for high chromium cast iron roll comprising a fixed casing (1), a telescopic shank structure and a detachable head structure, characterized in that, The telescopic tool holder structure includes a hollow tool holder (2), an adjusting screw (3) located inside the hollow tool holder (2), a telescopic tool holder (4) threadedly connected to the adjusting screw (3), a self-locking control component, and a guide component; The detachable cutter head structure includes a cutter holder (12), a double-ended stud (13) inserted transversely through the cutter holder (12), a scraper head (14) that is inserted and engaged with the double-ended stud (13), and two butterfly locking nuts (16) that are threaded to the two threaded ends of the double-ended stud (13) in sequence. The cutter holder (12) is fixedly connected to the bottom outer wall of the telescopic cutter handle (4).

2. The precision doctor blade for high chromium cast iron roll according to claim 1, characterized in that, The self-locking control assembly includes a control shaft (5) rotatably mounted in a fixed housing (1), a worm gear (6) fixedly mounted on the control shaft (5), and a worm wheel (7) fixedly mounted on the top of the adjusting screw (3).

3. The precision doctor blade for high chromium cast iron roll according to claim 2, characterized in that, The worm (6) and worm wheel (7) mesh with each other and are both located inside the fixed housing (1), and a rotating cap (8) is fixedly connected to the outer wall of one end of the control shaft (5).

4. The precision doctor blade for high chromium cast iron roll according to claim 1, characterized in that, The top outer wall of the fixed shell (1) is fixedly connected to the bearing seat (9) by bolts, and the top end of the adjusting screw (3) is connected to the inner wall of the bearing seat (9) by the bearing.

5. The precision doctor blade for high chromium cast iron roll according to claim 1, characterized in that, The guiding component includes a guide opening (10) on the hollow tool holder (2), the inner wall of the front side of the guide opening (10) is engraved with evenly distributed scale lines, the upper outer wall of the telescopic tool holder (4) is welded with a guide (11), and the outer wall of the guide (11) is slidably connected to the inner wall of the guide opening (10).

6. The precision doctor blade for high chromium cast iron roll according to claim 1, characterized in that, The upper part of the scraper head (14) is provided with a socket (15) that is compatible with the double-ended stud (13), and the two butterfly locking nuts (16) are respectively fastened to the outer walls of the two sides of the blade holder (12).

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