A scraper

Abstract

The utility model provides a kind of material scraper, it is applicable to water gap forming mould, comprising: scraper, scraper extends along the radial direction of water gap forming mould;First positioning component, first positioning component is installed on the die rod of water gap forming mould, first positioning component is connected with scraper, to make scraper rotate around die rod;Second positioning component, second positioning component is installed on the height positioning reference of water gap forming mould, second positioning component is connected with scraper, and second positioning component is used to position the working height of scraper.The material scraper in the utility model solves the technical problem that the water gap with multilayer composite structure in the related art has lower scraping efficiency when scraping powder.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting functional refractory material production technology, specifically to a scraper. Background Technology

[0002] The three main components of functional refractory materials for continuous casting are critical parts in the continuous casting process, and their performance directly affects the stability, safety, and billet quality of the continuous casting operation. In particular, the flatness, parallelism, and surface quality of the sliding plates (plate surfaces) of the upper and lower nozzles are crucial for quick-change submerged entry nozzles and tundish nozzles, directly affecting the performance of the nozzles.

[0003] Currently, sprue production typically employs isostatic pressing. For multi-layered composite sprues (such as body material-transition material-sheet material), after sequentially filling the mold with powders of different formulations, the surfaces of these powders need to be smoothed to ensure dimensional accuracy and bonding of the various materials on the sheet. Traditional methods often use simple rulers or rely on worker experience for manual smoothing, which has the following drawbacks: 1. Poor smoothing accuracy, making it difficult to ensure uniform thickness of the sheet material layers, easily leading to uneven surfaces or thickness deviations after sintering, resulting in scrap; 2. Low efficiency: manual operation relies on skill, resulting in poor consistency and hindering large-scale, standardized production; 3. Easy disturbance of lower layers: simple scrapers easily agitate and mix the lower transition or body materials during scraping, disrupting the intended clear interface and severely affecting product performance. Therefore, a dedicated device capable of accurately, efficiently, and smoothly smoothing sheet materials is urgently needed.

[0004] Therefore, existing technologies need further development. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a scraper to solve the technical problem that the scraping efficiency of sprues with multi-layer composite structures is low when scraping powder.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: a scraper is provided, applicable to sprue forming molds, comprising: a scraper extending radially along the sprue forming mold; a first positioning component mounted on the mold rod of the sprue forming mold, the first positioning component being connected to the scraper to allow the scraper to rotate around the mold rod; and a second positioning component mounted on the height positioning reference of the sprue forming mold, the second positioning component being connected to the scraper, the second positioning component being used to position the working height of the scraper.

[0007] Furthermore, the first positioning component includes a positioning ring, the inner shape of which matches the outer shape of the mold rod, and the positioning ring is detachably fitted onto the mold rod.

[0008] Furthermore, the sprue forming mold includes a mounting ring, the top of which has a height positioning reference. The second positioning component includes a guide plate that extends radially along the sprue forming mold. One end of the guide plate is connected to a scraper, and the other end of the guide plate extends beyond the side wall of the mounting ring. The guide plate is mounted on the top of the mounting ring.

[0009] Furthermore, the second positioning component includes a fixing plate, one end of which is connected to the positioning ring, and the other end of which extends beyond the side wall of the mounting ring. There are two fixing plates, which are located on both sides of the guide plate.

[0010] Furthermore, the positioning ring is a semi-circular ring, and the extension directions of the two fixing plates coincide with each other. The two fixing plates are respectively connected to the two ends of the positioning ring.

[0011] Furthermore, the scraper includes a first scraper and a second scraper, with the scraper blades of the first scraper and the scraper blades of the second scraper arranged opposite to each other.

[0012] Furthermore, a clearance space is provided between the first scraper and the second scraper, and a guide plate is provided in the clearance space.

[0013] Furthermore, the distance between the blade of the first scraper and the guide plate is a first distance D1, and the distance between the blade of the second scraper and the guide plate is a second distance D2. The first distance D1 and the second distance D2 are not equal.

[0014] Furthermore, the first scraper has comb teeth formed on its blade edge, and the comb teeth include multiple comb teeth, which are spaced apart along the extension direction of the first scraper; the second scraper has comb teeth formed on its blade edge, and the comb teeth include multiple comb teeth, which are spaced apart along the extension direction of the second scraper.

[0015] Beneficial effects: 1. This utility model uses the first positioning component and the second positioning component as positioning guide mechanisms to ensure the alignment accuracy between the scraper and the mold, and ensures that the positioning is completed as soon as the scraper is installed. The scraper blade that matches the product contour is used for rotating and leveling, which effectively solves the problems of poor accuracy, low efficiency and easy disturbance of the lower layer material in the traditional manual leveling method. It has the advantages of high leveling quality, simple operation and tight material bonding. It also solves the technical problem of low leveling efficiency of sprues with multi-layer composite structures when leveling powder in related technologies.

[0016] 2. By setting a fixed plate, the bottom surface of the fixed plate is flush with the bottom surface of the fixed plate, thus forming multi-point support. The guide plate and the fixed plate together complete the axial positioning of the scraper, improve the stability of the scraper, and ensure the smooth operation of the scraper every time it is used.

[0017] 3. The scraper includes a first scraper and a second scraper. The scraper blades of the first scraper and the second scraper are arranged opposite to each other, which can be used to scrape different powder layers, thus improving the flexibility of the scraper. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating the application of the scraper used in an embodiment of this utility model; Figure 2 This is a schematic diagram of the scraper used in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the first positioning component of the scraper used in this embodiment of the utility model; Figure 4 This is a schematic diagram of the structure of the scraper blade of the scraper used in this embodiment of the utility model; Figure 5 This is a front view of the scraper blade of the scraper used in this embodiment of the utility model; Figure 6 This is a schematic diagram of the product material layer state after being scraped flat by a scraper in other embodiments of this utility model.

[0019] The above figures include the following reference numerals: 10. Mold rod; 20. Mounting ring; 201. Height positioning reference; 30. Base; 1. Scraper; 11. First scraper; 12. Second scraper; 13. Comb teeth; 2. First positioning component; 21. Positioning ring; 3. Guide plate; 4. Fixing plate; 5. Body material powder; 6. Transition material powder; 7. Board surface powder. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] According to an embodiment of this utility model, a scraper is provided; please refer to [link / reference]. Figures 1 to 6This is applicable to sprue forming molds and includes: a scraper 1 extending radially along the sprue forming mold; a first positioning component 2 mounted on the mold rod 10 of the sprue forming mold and connected to the scraper 1 to allow the scraper 1 to rotate around the mold rod 10; and a second positioning component mounted on the height positioning reference 201 of the sprue forming mold and connected to the scraper 1, used to position the working height of the scraper 1.

[0022] Specifically, the scraper 1 extends radially along the sprue forming mold and matches the product contour; by fixing the first positioning component 2 to the mold rod 10, it is ensured that the rotation center of the scraper 1 is consistent with the geometric center of the mold. This connection method allows the scraper 1 to rotate circumferentially around the mold rod 10 under external drive or manual operation; the second positioning component is installed on the height positioning reference 201 of the sprue forming mold and connected to the scraper 1 to accurately position the working height of the scraper 1, thereby scraping the material level according to the design height of the sprue material layer.

[0023] This utility model uses the first positioning component 2 and the second positioning component as positioning guide mechanisms to ensure the alignment accuracy between the scraper and the mold, ensuring that positioning is completed as soon as the scraper is installed. It uses a scraper blade that matches the product contour to rotate and level the material, effectively solving the problems of poor accuracy, low efficiency, and easy disturbance of the lower layer material in the traditional manual leveling method. It has the advantages of high leveling quality, simple operation, and tight material bonding. It also solves the technical problem of low leveling efficiency of sprues with multi-layer composite structures when leveling powder in related technologies.

[0024] In the scraper of this embodiment, see Figure 2 The first positioning component 2 includes a positioning ring 21. The inner ring shape of the positioning ring 21 matches the outer shape of the mold rod 10, and the positioning ring 21 is detachably fitted onto the mold rod 10. By designing the inner ring shape of the positioning ring 21 to match the outer shape of the mold rod 10, the positioning ring is formed according to the actual shape of the mold rod. For example, when the mold rod 10 is cylindrical, the inner ring of the positioning ring 21 is circular. The positioning ring 21 is detachably fitted onto the mold rod 10, which facilitates quick positioning and installation during the scraper installation process, and achieves radial positioning between the positioning ring 21 and the mold rod 10.

[0025] In the scraper of this embodiment, see Figure 2 The sprue forming mold includes a mounting ring 20, the top of which is formed with a height positioning reference 201. The second positioning component includes a guide plate 3, which extends radially along the sprue forming mold. One end of the guide plate 3 is connected to the scraper 1, and the other end of the guide plate 3 extends beyond the side wall of the mounting ring 20. The guide plate 3 is mounted on the top of the mounting ring 20.

[0026] In some embodiments, the sprue forming mold includes a base and a mounting ring 20 mounted on the base. The scraper adjusts the design height of the scraper according to the height of the mounting ring 20, and uses the top of the mounting ring 20 as the height positioning reference when the scraper is installed, thereby facilitating quick installation.

[0027] In this way, by setting the guide plate 3, the axial positioning of the scraper can be completed by directly placing the guide plate 3 on the mounting ring 20 during installation.

[0028] In the scraper of this embodiment, see Figure 2 The second positioning component includes a fixing plate 4, one end of which is connected to the positioning ring 21, and the other end of which extends beyond the side wall of the mounting ring 20. Two fixing plates 4 are located on either side of the guide plate 3. By setting the fixing plates 4, the bottom surface of the fixing plates 4 is flush with the bottom surface of the fixing plate 3, thus forming multi-point support. The guide plate 3 and the fixing plates 4 together complete the axial positioning of the scraper, improving the stability of the scraper and ensuring its smooth operation each time it is used.

[0029] In the scraper of this embodiment, see Figure 3 The positioning ring 21 is a semi-circular ring, and the extension directions of the two fixing plates 4 coincide. The two fixing plates 4 are respectively connected to both ends of the positioning ring 21. The positioning ring 21 is designed as a semi-circular ring, which allows it to be detachably fitted onto the mold rod 10 with a clamp-like structure. This facilitates radial installation or removal during the scraper installation process, making it easy to fit while maintaining stability, thus improving the assembly convenience of the scraper. The two fixing plates 4 are respectively connected to both ends of the positioning ring 21, forming a three-point support with the guide plate 3 set between the two fixing plates, improving the stability of the scraper after installation.

[0030] In some embodiments, the inner diameter of the positioning ring 21 is slightly larger than the outer diameter of the mold rod for sprue forming, so that it can be securely fitted onto the lower end of the mold rod.

[0031] In some embodiments, the scraper 1 is mounted on the positioning ring 21 by means of a pin or by welding.

[0032] In the scraper of this embodiment, see Figure 4 The scraper 1 includes a first scraper 11 and a second scraper 12, with the scraper blades of the first scraper 11 and the scraper blades of the second scraper 12 arranged opposite to each other. In this way, by setting two scrapers, the two scrapers can be designed with different shapes or sizes and scraping heights, which can be used to scrape different powder layers, thus improving the flexibility of the scraper.

[0033] In the scraper of this embodiment, see Figure 4A clearance space is provided between the first scraper 11 and the second scraper 12, and a guide plate 3 is provided in the clearance space. This facilitates the use of the guide plate 3 as a positioning reference for the installation of the first scraper 11 and the second scraper 12.

[0034] In some embodiments, the guide plate 3 can serve as a handle, and the length of the guide plate 3 should exceed the distance of one palm from the mounting ring 20, so as to facilitate the operator's grip and operation.

[0035] Preferably, the extension directions of the guide plate 3, the first scraper 11, and the second scraper 12 are perpendicular to the two fixed plates 4, that is, the guide plate 3, the first scraper 11, and the second scraper 12 are centrally located between the two fixed plates 4. At the same time, the axial directions of the guide plate 3, the first scraper 11, and the second scraper 12 coincide with each other, and the axial directions of the guide plate 3, the first scraper 11, and the second scraper 12 are parallel to the axial direction of the mold rod 10.

[0036] In some embodiments, the scraper operates as follows: The scraper is precisely placed on the mold already filled with powder, supported by the first positioning component 2 and the second positioning component. The fixing plate 4 and the guide plate 3 are firmly seated on the mounting ring 20. The operator holds the guide plate 3 and smoothly rotates the entire scraper. The first scraper 11 and the second scraper 12 rotate accordingly, scraping the powder on the board material at a predetermined height along their travel path, resulting in a precise and effective powder contact surface. Due to the accurate scraper height, the scraping surface is ensured to be parallel to the mold reference surface, thereby guaranteeing the uniformity of the board material thickness and the smoothness of the surface after molding.

[0037] In the scraper of this embodiment, see Figure 5 The distance between the blade of the first scraper 11 and the guide plate 3 is a first distance D1, and the distance between the blade of the second scraper 12 and the guide plate 3 is a second distance D2. The first distance D1 and the second distance D2 are not equal. By setting the first distance D1 and the second distance D2, the guide plate 3 is used as the positioning reference for the scrapers. The two scrapers are designed with different leveling heights. During use, the scraper is flipped, and the two scrapers on opposite sides can be used to level different layers of powder material, improving the flexibility of the scraper. For example, in the process of producing multi-layer composite structure sprues (such as body material-transition material-sheet material), the second scraper 12 and the first scraper 11 are used to level the bottom sheet material and the middle transition material, respectively.

[0038] It should be noted that the height of the second scraper 12 and the first scraper 11 is determined by the feeding height of the raw material from the sprue, that is, the height of the mounting ring 20 minus the feeding height; the length of the second scraper 12 and the first scraper 11 is determined by the diameter of the lower port of the mounting ring 20. The length of the second scraper 12 and the first scraper 11 is slightly smaller than the edge of the lower port, so that they do not directly contact the mounting ring 20, while having the maximum scraping range.

[0039] In some embodiments, the first scraper 11 and the second scraper 12 are distinguished in shape, such as the first scraper 11 being "L"-shaped and the second scraper 12 being trapezoidal.

[0040] In the scraper of this embodiment, see Figure 4 The first scraper 11 has comb teeth 13 formed on its scraper edge, and the comb teeth 13 include multiple teeth, which are spaced apart along the extending direction of the first scraper 11. The second scraper 12 also has comb teeth 13 formed on its scraper edge, and the comb teeth 13 include multiple teeth, which are spaced apart along the extending direction of the second scraper 12. In this way, the cutting edge of the scraper is designed to be serrated or wavy, which is used for the tight bonding between two materials and is suitable for scraping the bonding surface of the scraper.

[0041] In some embodiments, the first scraper 11 and the second scraper 12 are made of a material with high hardness, wear resistance and not easily sticking to powder, and the scraper plate is 2mm thick, such as cemented carbide, polyurethane or high carbon tool steel, and the surface is polished to a mirror finish to reduce scraping resistance and ensure a smooth scraped surface.

[0042] See Figure 1 and Figure 6 During operation, the mold rod 10 is connected to the base 30, and the positioning ring 20 is installed on the base 30. After the sprue forming mold is assembled, it is placed on the operating table. First, the weighed sheet material powder 7 is laid on the bottom of the mold. Then, the scraper is put on the mold rod 10, ensuring that the fixing plate 4 and the guide plate 3 are placed stably on the mounting ring 20 in a triangular relationship. First, the second scraper 12 is used to scrape the material. The operator holds the guide plate 3, so that the positioning ring 21 fits against the arc of the mold rod 10, and rotates it around the mold rod 10 at a uniform speed for one revolution. At the same time, the second scraper 12 will also scrape the upper surface of the sheet material powder 7 to obtain a wavy contact surface of uniform thickness. Next, the weighed transition material powder 6 is added to the mold. The scraper is reversed, and the first scraper 11 is used to scrape the material. The above steps are repeated to obtain a flat and uniform transition material contact surface. After completion, the scraper is removed, the main body material powder is added, and after the material feeding process is completed, the mold is sealed and can be transferred to the next isostatic pressing process.

[0043] It should be noted that the multi-layer gradient material design between the sprue plates can adjust for excessive differences in the thermal expansion coefficients between different materials, alleviate thermal mismatch stress, and enhance interlayer bonding, preventing crack propagation during sintering or use, thus effectively improving the service life and stability of the sprue. However, this also increases the complexity and cost of the process. Multiple material distributions and layered fillings, uneven material distribution, or interface disturbances can easily lead to cross-contamination between layers, resulting in areas that are too thick or too thin. In this embodiment, the scraper design adheres to the principles of uniform material distribution, avoiding interlayer contamination during the scraping process, strengthening the bonding between layers, and improving production efficiency. It can stably produce sprues with a high-quality transition layer, thereby meeting the production requirements of multi-layer gradient material sprues.

[0044] In this embodiment, the scraper achieves higher leveling precision. The first positioning component 2 and the second positioning component serve as positioning guides, ensuring precise alignment between the scraper and the mold. The scraper shape matches the product material layer design, guaranteeing the adhesion, dimensional accuracy, and surface quality of the board material layers. This results in high production efficiency, simple and quick operation, reduced reliance on manual experience, and significantly improved consistency and efficiency of the leveling process.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0047] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0048] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0049] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A scraper, characterized in that, Suitable for sprue forming molds, including: A scraper (1) extends radially along the sprue forming mold; The first positioning component (2) is installed on the mold rod (10) of the sprue forming mold. The first positioning component (2) is connected to the scraper (1) so that the scraper (1) can rotate around the mold rod (10). The second positioning component is installed on the height positioning reference (201) of the sprue forming mold. The second positioning component is connected to the scraper (1) and is used to position the working height of the scraper (1).

2. The scraper according to claim 1, characterized in that, The first positioning component (2) includes a positioning ring (21), the inner ring shape of which matches the outer shape of the mold rod (10), and the positioning ring (21) is detachably fitted onto the mold rod (10).

3. The scraper according to claim 2, characterized in that, The sprue forming mold includes a mounting ring (20), the top of which is formed with a height positioning reference (201). The second positioning component includes a guide plate (3), which extends radially along the sprue forming mold. One end of the guide plate (3) is connected to the scraper (1), and the other end of the guide plate (3) extends beyond the side wall of the mounting ring (20). The guide plate (3) is mounted on the top of the mounting ring (20).

4. The scraper according to claim 3, characterized in that, The second positioning component includes a fixing plate (4), one end of which is connected to the positioning ring (21), and the other end of which extends beyond the side wall of the mounting ring (20). The fixing plate (4) includes two plates, which are located on both sides of the guide plate (3).

5. The scraper according to claim 4, characterized in that, The positioning ring (21) is a semi-circular ring, and the extension directions of the two fixing plates (4) coincide with each other. The two fixing plates (4) are respectively connected to the two ends of the positioning ring (21).

6. The scraper according to claim 3, characterized in that, The scraper (1) includes a first scraper (11) and a second scraper (12), with the scraper blades of the first scraper (11) and the scraper blades of the second scraper (12) arranged opposite to each other.

7. The scraper according to claim 6, characterized in that, A clearance space is provided between the first scraper (11) and the second scraper (12), and the guide plate (3) is provided in the clearance space.

8. The scraper according to claim 7, characterized in that, The distance between the blade of the first scraper (11) and the guide plate (3) is the first distance D1, and the distance between the blade of the second scraper (12) and the guide plate (3) is the second distance D2. The first distance D1 and the second distance D2 are not equal.

9. The scraper according to claim 6, characterized in that, The first scraper (11) has comb teeth (13) formed on its blade edge. The comb teeth (13) comprise a plurality of teeth, which are spaced apart along the extending direction of the first scraper (11); and / or, The second scraper (12) has comb teeth (13) formed on its blade. The comb teeth (13) include a plurality of them, and the plurality of comb teeth (13) are spaced apart along the extension direction of the second scraper (12).

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