A kind of scraper automatic corner degree and the mechanism that can automatically return oil

Abstract

This utility model relates to the field of scraper oil return technology, and discloses a mechanism for automatic angle rotation and automatic up-and-down oil return of a scraper, including a main support plate, an oil return blade, and a scraper. The top of the main support plate is connected to a mounting plate via a guide post. An angle motor, a scraper motor, and an oil return blade motor are installed at the top of the main support plate. A lead screw and a threaded transmission component are threaded together to drive the angle support plate, scraper support plate, and oil return blade support plate to move up and down along the guide post. A scraper angle adjustment mechanism is provided, in which the angle motor drives the angle support plate to move. Automatic scraper angle adjustment is achieved through an angle adjustment bar, a connecting bar, and a rotating shaft linkage angle connector and scraper connector. The scraper motor drives the scraper support plate to move the scraper up and down. An automatic oil return mechanism is provided, in which the oil return blade motor drives the oil return blade support plate to move the oil return blade connecting bar and the oil return blade up and down via the guide post. The guide post and guide cylinder cooperate to ensure smooth movement. The oil return blade is quickly assembled and disassembled through a fixing component and a fixing hole in the connecting bar.

Description

Technical Field

[0001] This utility model relates to the field of scraper oil return technology, specifically a scraper that automatically rotates its angle and can automatically return oil up and down. Background Technology

[0002] In industrial production, scraper mechanisms are widely used in coating, printing, and surface treatment. Their core function is to achieve uniform scraping or coating of materials through the precise movement of the scraper, while the oil return function is used to collect and recycle excess materials to improve raw material utilization and maintain a clean working environment. With the increasing demand for automated production, the traditional methods of manually adjusting the scraper angle and manually controlling the oil return are no longer sufficient to meet the requirements of high precision and high efficiency. Modern industry urgently needs a mechanism that can automatically adjust the scraper angle and automate the oil return action to reduce manual intervention, improve production consistency, and reduce material waste and equipment wear caused by human error.

[0003] Traditional scraper mechanisms have the following drawbacks: First, scraper angle adjustment relies on manual operation, resulting in low precision and time-consuming labor, making it difficult to adapt to the need for rapid switching between multiple working conditions. Especially in the production of complex curved surfaces or multi-specification products, the lag in manual adjustment significantly affects production efficiency. Second, the oil return process mostly uses fixed positions or manual opening and closing methods, making it impossible to dynamically adjust the timing and position of oil return based on the real-time material status. This leads to untimely recovery of excess material, causing not only raw material waste but also potential contamination of the work surface or equipment, increasing cleaning costs. Third, traditional mechanisms have poor mechanical linkage; angle adjustment, scraper movement, and oil return actions are independent of each other, lacking a coordinated control mechanism, making it difficult to achieve full-process automation and limiting the intelligent upgrading of the production line. These technical bottlenecks not only restrict the improvement of production efficiency but also increase the company's labor costs and management difficulty. To address these issues, we propose a mechanism that automatically rotates the scraper angle and can automatically return oil up and down. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a mechanism for automatic angle rotation of the scraper and automatic oil return up and down, thus solving the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a mechanism for automatic angle rotation and automatic oil return of a scraper, comprising a main support plate, an oil return blade, and a scraper. A mounting plate is connected to the top of the main support plate via guide posts. An angle motor, a scraper motor, and an oil return blade motor are respectively mounted on the top of the mounting plate. The output shafts of the angle motor, scraper motor, and oil return blade motor are connected to transmission screws. An angle support plate, scraper support plate, and oil return blade support plate are guided and mounted between the mounting plate and the main support plate. The two sides of the oil return blade support plate are guided and engaged with the main support plate via guide posts. A threaded transmission component is provided on the oil return blade support plate, which is threadedly engaged with the transmission screw at the bottom end of the output shaft of the oil return blade motor. Oil return blade connecting strips are connected to the bottom ends of the guide posts on both sides of the oil return blade support plate. The bottom end of the strip is fixed with a return oil knife by a fastener. Threaded transmission components are respectively provided on the angle support plate and the scraper support plate. The threaded transmission component on the angle support plate is threadedly engaged with the transmission screw at the bottom end of the angle motor output shaft. Angle adjustment strips are rotatably connected to both ends of the angle support plate. The angle adjustment strips pass through the main support plate and are connected to a connecting strip. The other end of the connecting strip is rotatably engaged inside the angle connecting component via a rotating shaft. The rotating shaft passes through the angle connecting component and is connected to and rotatably engaged with the scraper connecting component. A scraper connecting strip is fixed to the bottom end of the scraper connecting component. A scraper is fixed to the bottom end of the scraper connecting strip via a scraper fixing component. The threaded transmission component on the scraper support plate is threadedly engaged with the transmission screw at the bottom end of the scraper motor output shaft. A guide post is provided at the bottom end of the scraper support plate, and the guide post passes through the main support plate and is fixedly connected to the top end of the angle connecting component.

[0008] Preferably, the bottom of both ends of the main support plate is provided with a rotating component and a fixing block. The rotating component is rotatably engaged with the rotating connector. The fixing block is provided with a fixing pin. The rotating connector is fixed by the fixing pin. A sliding plate is fixed at the bottom of the rotating connector. A sliding block is provided at the bottom of the sliding plate.

[0009] Preferably, the top of the main support plate is connected to a mounting plate via a guide post. An angle support plate, a scraper support plate, and a return oil blade support plate are guided and fitted between the mounting plate and the main support plate. The output shaft of the angle motor located at the top of the mounting plate passes through the mounting plate. Threaded transmission components are interposed on the angle support plate and the scraper support plate. The threaded transmission components are threadedly engaged with the transmission screw at the bottom end of the angle motor output shaft. The output shaft of the scraper motor passes through the mounting plate, and the transmission screw at the bottom end of the scraper motor output shaft is threadedly engaged with the threaded transmission component on the scraper support plate.

[0010] Preferably, angle adjustment strips are rotatably installed at both ends of the angle support plate, and the other end of the angle adjustment strip is rotatably connected to one end of the connecting strip. A rotating shaft is inserted into the angle connector, and one end of the rotating shaft is rotatably connected to the other end of the connecting strip. The other end of the rotating shaft extends into the interior of the scraper connector and is rotatably engaged. The guide post at the bottom of the scraper support plate passes through the mounting plate and is fixedly connected to the top of the angle connector.

[0011] Preferably, a scraper connecting strip is fixedly connected to the bottom end of the scraper connector, and a scraper is fitted into the bottom groove of the scraper connecting strip. The two ends of the scraper connecting strip and the scraper are slidably locked and fixed by a scraper fixing member.

[0012] Preferably, the main support plate has symmetrical guide cylinders inserted into it, and guide columns are inserted inside the guide cylinders. A return oil knife support plate is sleeved on the guide column. The top of the guide column is fixedly connected to the return oil knife support plate by a threaded column. A return oil knife connecting strip is fixedly connected to the bottom of the guide column inside the guide cylinder. The front end of the return oil knife connecting strip has symmetrical fixing holes, and the bottom of the return oil knife connecting strip is provided with a return oil knife. The return oil knife is fixed by a fixing member corresponding to the fixing hole.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a mechanism for automatic angle rotation of the scraper and automatic oil return up and down, which has the following beneficial effects:

[0015] 1. This scraper features an automatic angle-rotating mechanism and an automatic up-and-down oil return mechanism, providing multi-dimensional automated control to improve operational accuracy and efficiency. The angle motor, scraper motor, and oil return blade motor are independently driven, controlling the scraper angle adjustment, vertical positioning, and up-and-down movement of the oil return blade. The angle motor moves the angle support plate via a transmission screw and threaded drive, achieving automatic and precise scraper angle adjustment through linkage mechanisms such as the angle adjustment bar and connecting bar. The scraper motor drives the scraper support plate to position the scraper vertically, and combined with the angle adjustment function, it can adapt to the oil scraping needs under different working conditions. The oil return blade motor drives the oil return blade to automatically return oil up and down via a guide column. The three mechanisms work together to significantly improve the automation and efficiency of oil scraping and return.

[0016] 2. The scraper features an automatic angle-rotating mechanism and an automatic up-and-down oil return mechanism. Its optimized structural design ensures stable movement and convenient maintenance. The mounting plate and main support plate are connected by guide columns. The angle support plate, scraper support plate, and oil return blade support plate are all guided by guide columns, and the guide cylinder restricts the movement trajectory, ensuring the stability and accuracy of the up-and-down movement of each component and preventing deviation. The oil return blade is quickly installed and removed through the fixing holes of the fixing piece and the oil return blade connecting strip. The scraper is fixed by the scraper fixing piece and the scraper connecting strip, facilitating daily maintenance and replacement. The bottom rotating parts, sliding blocks, and other auxiliary structures are locked in position or rotated and adjusted through fixing pins, improving the flexibility of the mechanism. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model.

[0019] In the diagram: 1. Angle motor; 2. Scraper motor; 3. Return oil knife motor; 4. Transmission screw; 5. Threaded transmission component; 6. Angle support plate; 7. Scraper support plate; 8. Return oil knife support plate; 9. Mounting plate; 10. Main support plate; 11. Return oil knife connecting strip; 12. Fixing component; 13. Return oil knife; 14. Angle adjustment strip; 15. Connecting strip; 16. Angle connecting component; 17. Scraper connecting component; 18. Scraper connecting strip; 19. Scraper; 20. Scraper fixing component; 21. Rotating component; 22. Fixing block; 23. Fixing pin; 24. Rotating connecting component; 25. Sliding plate; 26. Sliding block. Detailed Implementation

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

[0021] Please see Figure 1-2A mechanism for automatically rotating a scraper and automatically returning oil up and down includes a main support plate 10, an oil return blade 13, and a scraper 19. A mounting plate 9 is connected to the top of the main support plate 10 via guide posts. An angle motor 1, a scraper motor 2, and an oil return blade motor 3 are respectively mounted on the top of the mounting plate 9. The output shafts of the angle motor 1, scraper motor 2, and oil return blade motor 3 are connected to transmission screws 4. An angle support plate 6, a scraper support plate 7, and an oil return blade support plate 8 are guided and mounted between the mounting plate 9 and the main support plate 10. The two sides of the oil return blade support plate 8 are guided and engaged with the main support plate 10 via guide posts. A threaded transmission component 5 is provided on the oil return blade support plate 8, and the threaded transmission component 5 is threadedly engaged with the transmission screw 4 at the bottom end of the output shaft of the oil return blade motor 3. Oil return blade connecting strips 11 are connected to the bottom ends of the guide posts on both sides of the oil return blade support plate 8. An oil return blade is fixed to the bottom end of the oil return blade connecting strip 11 via a fixing component 12. 13. Threaded transmission components 5 are respectively provided on the angle support plate 6 and the scraper support plate 7. The threaded transmission component 5 on the angle support plate 6 is threadedly engaged with the transmission screw 4 at the bottom of the output shaft of the angle motor 1. Angle adjustment bars 14 are rotatably connected to both ends of the angle support plate 6. The angle adjustment bars 14 pass through the main support plate 10 and are connected to the connecting bar 15. The other end of the connecting bar 15 is rotatably engaged inside the angle connecting member 16 through a rotating shaft. The rotating shaft passes through the angle connecting member 16 and is connected to and rotatably engaged with the scraper connecting member 17. The scraper connecting bar 18 is fixed at the bottom end of the scraper connecting member 17. The scraper 19 is fixed at the bottom end of the scraper connecting bar 18 through the scraper fixing member 20. The threaded transmission component 5 on the scraper support plate 7 is threadedly engaged with the transmission screw 4 at the bottom of the output shaft of the scraper motor 2. The scraper support plate 7 is provided with a guide post at the bottom end. The guide post passes through the main support plate 10 and is fixedly connected to the top end of the angle connecting member 16.

[0022] Furthermore, the bottom of both ends of the main support plate 10 are provided with a rotating component 21 and a fixed block 22. The rotating component 21 is rotatably engaged with the rotating connector 24. The fixed block 22 is provided with a fixing pin 23. The rotating connector 24 is fixed by the fixing pin 23. The bottom end of the rotating connector 24 is fixed with a sliding plate 25. The bottom end of the sliding plate 25 is provided with a sliding block 26, so as to realize the overall rotation adjustment and sliding positioning of the mechanism. The fixing pin 23 ensures that the position is locked during operation, improving the operational flexibility and stability.

[0023] Furthermore, the top of the main support plate 10 is connected to the mounting plate 9 via guide posts. An angle support plate 6, a scraper support plate 7, and a return oil knife support plate 8 are guided and fitted between the mounting plate 9 and the main support plate 10. The output shaft of the angle motor 1, located at the top of the mounting plate 9, passes through the mounting plate 9. Threaded transmission components 5 are inserted and installed on the angle support plate 6 and the scraper support plate 7. The threaded transmission components 5 are threadedly engaged with the transmission screw 4 at the bottom of the output shaft of the angle motor 1. The output shaft of the scraper motor 2 passes through the mounting plate 9, and the transmission screw 4 at the bottom of the output shaft of the scraper motor 2 is threadedly engaged with the threaded transmission component 5 on the scraper support plate 7, thereby achieving precise power transmission and motion guidance.

[0024] Furthermore, angle adjustment strips 14 are rotatably installed at both ends of the angle support plate 6, and the other end of the angle adjustment strip 14 is rotatably connected to one end of the connecting strip 15. A rotating shaft is inserted and installed on the angle connector 16, and one end of the rotating shaft is rotatably connected to the other end of the connecting strip 15. The other end of the rotating shaft extends into the interior of the scraper connector 17 and is rotatably engaged. The guide post at the bottom of the scraper support plate 7 passes through the mounting plate 9 and is fixedly connected to the top of the angle connector 16. When the angle support plate 6 moves, it drives the scraper connector 17 to rotate, thereby realizing the automatic adjustment and precise control of the angle of the scraper 19.

[0025] Furthermore, a scraper connecting strip 18 is fixedly connected to the bottom end of the scraper connector 17, and a scraper 19 is fitted into the bottom groove of the scraper connecting strip 18. The two ends of the scraper connecting strip 18 and the scraper 19 are fixed by sliding engagement of the scraper fixing member 20. The scraper fixing member 20 is used to slide engagement to realize the quick installation, disassembly and position fixation of the scraper 19, which is convenient for maintenance and replacement.

[0026] Furthermore, symmetrical guide cylinders are inserted into the main support plate 10, and guide columns are inserted inside the guide cylinders. A return oil knife support plate 8 is sleeved on the guide column. The top of the guide column is fixedly connected to the return oil knife support plate 8 by a threaded column. A return oil knife connecting strip 11 is fixedly connected to the bottom of the guide column inside the guide cylinder. The front end of the return oil knife connecting strip 11 has symmetrical fixing holes. A return oil knife 13 is set at the bottom of the return oil knife connecting strip 11. The return oil knife 13 is fixed by the fixing member 12 corresponding to the fixing hole. The guide cylinder and guide column of the main support plate 10 cooperate to ensure the stable up and down movement of the return oil knife support plate 8. The return oil knife 13 is quickly installed through the fixing member 12 and the fixing hole of the return oil knife connecting strip 11, realizing the automatic up and down return oil function of the return oil knife 13 while improving the convenience of maintenance.

[0027] Structural Description:

[0028] Angle motor 1: Installed on the top of the mounting plate 9, the output shaft is connected to the transmission screw 4, and drives the angle support plate 6 to move, thereby realizing the automatic adjustment of the angle of the scraper 19 and providing power for angle control;

[0029] Scraper motor 2: Located at the top of mounting plate 9, with output shaft connected to transmission screw 4, driving scraper support plate 7 to move up and down, and driving scraper 19 to be positioned up and down, adapting to different working conditions for oil scraping.

[0030] Oil return knife motor 3: Installed on the top of the mounting plate 9, the output shaft is connected to the transmission screw 4, which drives the oil return knife support plate 8 to move up and down, thereby driving the oil return knife 13 to automatically return oil and realize the automation of oil recovery;

[0031] Transmission screw 4: Connected to the output shaft of each motor, it converts the rotational motion of the motor into the linear motion of the support plate through the threaded engagement with the threaded transmission component 5, and is the core component for power transmission;

[0032] Threaded transmission component 5: Installed on each support plate, threadedly engaged with the transmission screw 4, receiving motor power, and driving the angle support plate 6, scraper support plate 7, and return oil knife support plate 8 to move along the guide column;

[0033] Angle support plate 6: Installed between the main support plate 10 and the mounting plate 9 via guide columns, driven by the angle motor 1, which drives the angle adjustment bar 14 to swing, thereby realizing the transmission support for adjusting the scraper angle;

[0034] Scraper support plate 7: Guided by guide posts, it moves up and down driven by scraper motor 2. The bottom guide post is connected to angle connector 16 to realize the linkage of scraper 19 up and down positioning and angle adjustment.

[0035] Oil return knife support plate 8: It cooperates with the main support plate 10 through the guide column and is driven by the oil return knife motor 3 to drive the oil return knife connecting bar 11 and oil return knife 13 to move up and down to complete the automatic oil return function.

[0036] Mounting plate 9: Connected to the main support plate 10 via guide columns, it is used to install angle motor 1, scraper motor 2, and return oil motor 3, providing support and installation reference for each power component;

[0037] Main support plate 10: As the main support structure of the mechanism, it connects the mounting plate 9 and the bottom rotating part 21, etc., and integrates the guide cylinder and guide column to ensure the stable movement of each component;

[0038] Return oil cutter connecting strip 11: connects to the bottom guide post of the return oil cutter support plate 8, and installs the return oil cutter 13 through the fastener 12, transmitting up and down movement and fixing the position of the return oil cutter;

[0039] Fixing component 12: Used to fix the return oil knife 13 to the bottom end of the return oil knife connecting strip 11. It can be quickly installed and disassembled by cooperating with the fixing hole, which is convenient for maintenance.

[0040] Oil return knife 13: Installed at the bottom of the oil return knife connecting bar 11, it moves up and down with the support plate 8 to realize automatic oil return, and is the execution component for oil recovery;

[0041] Angle adjustment bar 14: Rotatably connected to both ends of angle support plate 6, it swings as the support plate moves, pushing the connecting bar 15 to link with the angle connecting piece 16, thereby realizing the adjustment of the scraper angle;

[0042] Connecting bar 15: One end is connected to the angle adjustment bar 14, and the other end is connected to the scraper connector 17 through the rotating shaft linkage angle connector 16 to transmit the angle adjustment power, forming a four-bar linkage;

[0043] Angle connector 16: Through the rotational engagement of the pivot, connecting bar 15, and scraper connector 17, the oscillation of the angle adjustment bar 14 is converted into the rotation of the scraper connector 17, thereby realizing angle transmission;

[0044] Scraper connector 17: The top end is connected to the guide column of the scraper support plate 7, and the bottom end is fixed with the scraper connecting strip 18. The angle of the scraper 19 is adjusted by rotating the shaft, and it moves up and down with the support plate for positioning.

[0045] Scraper connecting strip 18: Fixed to the bottom end of scraper connector 17, it cooperates with scraper 19 through a slot and is fixed by scraper fixing part 20 to achieve quick scraper installation;

[0046] Scraper 19: Connected to scraper connector 17 via scraper connecting strip 18, it is subject to dual control of angle adjustment and vertical positioning, and is the core component for performing oil scraping operation;

[0047] Scraper fixing component 20: used to snap and fix the scraper 19 and the scraper connecting strip 18. The scraper can be quickly disassembled and assembled by sliding snap-fit, which is convenient for replacement and maintenance.

[0048] Rotating component 21: Located at the bottom of the main support plate 10, it rotates in conjunction with the rotating connecting component 24 and is locked or unlocked by the fixing pin 23 to achieve overall rotational adjustment and position fixation of the mechanism;

[0049] Fixed block 22: Installed at the bottom of the main support plate 10, it cooperates with the rotating part 21 and fixes the rotating connecting part 24 by the fixing pin 23 to ensure the stability of the mechanism when it is working;

[0050] Fixed pin 23: Used to lock the rotating connector 24. After the mechanism is adjusted to the target position, the fixed block 22 is inserted to prevent the rotating part 21 from rotating and to ensure operational stability.

[0051] Rotary connector 24: Rotates with the rotating component 21, and is connected to the sliding plate 25 at the bottom. After being fixed by the fixing pin 23, it supports the weight of the mechanism and transmits the sliding positioning function.

[0052] Sliding plate 25: Fixed to the bottom of the rotating connector 24, with a sliding block 26 at the bottom, which works with the rotating component 21 to achieve sliding adjustment of the entire mechanism on the plane, improving positional flexibility;

[0053] Sliding block 26: Installed at the bottom of sliding plate 25, it serves as the contact component between the mechanism and the support surface. It achieves the movement of the mechanism position through sliding friction, which facilitates installation and debugging.

[0054] Working Principle: The mechanism controls different functional modules via the angle motor 1, scraper motor 2, and return oil knife motor 3 on the top of the mounting plate 9. Each motor's output shaft is connected to a transmission screw 4. Through the threaded engagement of the screw and the threaded transmission component 5, the rotational motion of the motor is converted into linear motion, driving the corresponding angle support plate 6, scraper support plate 7, and return oil knife support plate 8 to move up and down along the guide column. When the return oil knife motor 3 starts, the transmission screw 4 rotates, causing the threaded transmission component 5 on the return oil knife support plate 8 to move up and down. This, in turn, drives the return oil knife connecting strip 11 and the return oil knife 13 to move up and down via the guide column, achieving automatic up and down movement of the return oil knife. The oil function is achieved through a guide post connection between the mounting plate 9 and the main support plate 10. The angle support plate 6, scraper support plate 7, and return oil knife support plate 8 are all guided by guide posts to ensure the stability and precision of each component's movement. The guide posts on both sides of the return oil knife support plate 8 cooperate with the guide cylinders of the main support plate 10, limiting its movement trajectory to the vertical direction. The angle motor 1 drives the transmission screw 4 to rotate, which in turn drives the angle support plate 6 to move up and down via the threaded transmission component 5. The angle adjustment bars 14, rotatably connected to both ends of the angle support plate 6, swing with the movement of the support plate, thereby pushing the connecting bar 15 to move. The connecting bar 15 is connected to the angle adjustment bar via a rotating shaft. Part 16 and scraper connector 17 rotate together to form a four-bar linkage. When the angle adjustment bar 14 swings, the connecting bar 15 drives the rotating shaft to rotate within the angle connector 16, thereby changing the tilt angle of the scraper connector 17 and ultimately achieving automatic angle adjustment of the scraper 19. The guide post at the bottom of the scraper support plate 7 passes through the main support plate 10 and is fixedly connected to the top of the angle connector 16. When the scraper motor 2 drives the scraper support plate 7 to move up and down, the guide post synchronously drives the angle connector 16 and scraper connector 17 to move up and down, allowing the scraper 19 to be positioned up and down while adjusting its angle, meeting the oil scraping needs under different working conditions and returning oil. The knife motor 3 drives the oil return knife support plate 8 to slide up and down along the guide column through the transmission screw 4 and the threaded transmission component 5. The bottom ends of the guide columns on both sides of the support plate are connected to the oil return knife connecting strip 11, and the bottom of the strip is installed with the oil return knife 13 through the fixing component 12. When the oil return knife needs to return oil, the motor drives the support plate to move downward so that the oil return knife contacts the oil surface. After the oil return is completed, the motor rotates in the opposite direction, and the support plate drives the oil return knife to rise and reset. The cooperation between the guide column and the guide cylinder ensures that the oil return knife moves smoothly and avoids deviation. The front end of the oil return knife connecting strip 11 is provided with symmetrical fixing holes. The oil return knife 13 is fixed by the fixing component 12 and the fixing holes, which facilitates disassembly and maintenance.

[0055] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanism for automatically rotating a scraper and automatically returning oil up and down, comprising a main support plate (10), an oil return blade (13), and a scraper (19), characterized in that: The top of the main support plate (10) is connected to a mounting plate (9) via guide posts. An angle motor (1), a scraper motor (2), and a return oil knife motor (3) are respectively installed at the top of the mounting plate (9). The output shafts of the angle motor (1), scraper motor (2), and return oil knife motor (3) are connected to a transmission screw (4). An angle support plate (6), a scraper support plate (7), and a return oil knife support plate (8) are guided and installed between the mounting plate (9) and the main support plate (10). The return oil knife support plate (6) The two sides of the return oil knife support plate (8) are guided and matched with the main support plate (10) by guide columns. The return oil knife support plate (8) is provided with a threaded transmission component (5). The threaded transmission component (5) is threaded and matched with the transmission screw (4) at the bottom end of the output shaft of the return oil knife motor (3). The bottom ends of the guide columns on both sides of the return oil knife support plate (8) are connected to the return oil knife connecting strip (11). The bottom end of the return oil knife connecting strip (11) is fixed with the return oil knife (13) by the fixing component (12). The angle support plate (6) and the scraper support plate (7) are divided into The angle support plate (6) is not equipped with a threaded transmission component (5). The threaded transmission component (5) on the angle support plate (6) is threadedly engaged with the transmission screw (4) at the bottom of the output shaft of the angle motor (1). Angle adjustment bars (14) are rotatably connected to both ends of the angle support plate (6). The angle adjustment bars (14) pass through the main support plate (10) and are connected to a connecting bar (15). The other end of the connecting bar (15) is rotatably engaged inside the angle connecting component (16) through a rotating shaft. The rotating shaft passes through the angle connecting component (16) and is connected to the scraper. The connector (17) is connected and rotated. The bottom end of the scraper connector (17) is fixed with a scraper connecting strip (18). The bottom end of the scraper connecting strip (18) is fixed with a scraper (19) through a scraper fixing part (20). The threaded transmission part (5) on the scraper support plate (7) is threadedly engaged with the transmission screw (4) at the bottom end of the output shaft of the scraper motor (2). The bottom end of the scraper support plate (7) is provided with a guide post, and the guide post passes through the main support plate (10) and is fixedly connected to the top end of the angle connector (16).

2. The mechanism for automatic angle rotation and automatic oil return of a scraper according to claim 1, characterized in that: The bottom of both ends of the main support plate (10) is provided with a rotating part (21) and a fixed block (22). The rotating part (21) is rotatably engaged with the rotating connector (24). The fixed block (22) is provided with a fixing pin (23). The rotating connector (24) is fixed by the fixing pin (23). The bottom end of the rotating connector (24) is fixed with a sliding plate (25). The bottom end of the sliding plate (25) is provided with a sliding block (26).

3. The mechanism for automatic angle rotation and automatic oil return of a scraper according to claim 1, characterized in that: The top of the main support plate (10) is connected to the mounting plate (9) via guide posts. An angle support plate (6), a scraper support plate (7), and a return oil knife support plate (8) are guided and fitted between the mounting plate (9) and the main support plate (10). The output shaft of the angle motor (1) located on the top of the mounting plate (9) passes through the mounting plate (9). Threaded transmission components (5) are inserted and installed on the angle support plate (6) and the scraper support plate (7). The threaded transmission components (5) are threadedly engaged with the transmission screw (4) at the bottom of the output shaft of the angle motor (1). The output shaft of the scraper motor (2) passes through the mounting plate (9), and the transmission screw (4) at the bottom of the output shaft of the scraper motor (2) is threadedly engaged with the threaded transmission components (5) on the scraper support plate (7).

4. The mechanism for automatic angle rotation and automatic oil return of a scraper according to claim 3, characterized in that: Angle adjustment strips (14) are rotatably installed at both ends of the angle support plate (6). The other end of the angle adjustment strip (14) is rotatably connected to one end of the connecting strip (15). A rotating shaft is inserted into the angle connector (16), and one end of the rotating shaft is rotatably connected to the other end of the connecting strip (15). The other end of the rotating shaft extends into the interior of the scraper connector (17) and rotates to engage. The guide post at the bottom of the scraper support plate (7) passes through the mounting plate (9) and is fixedly connected to the top of the angle connector (16).

5. The mechanism for automatic angle rotation and automatic oil return of a scraper according to claim 4, characterized in that: The bottom end of the scraper connector (17) is fixedly connected to a scraper connector strip (18), and the bottom end of the scraper connector strip (18) is fitted with a scraper (19). The two ends of the scraper connector strip (18) and the scraper (19) are slidably snapped together and fixed by the scraper fixing member (20).

6. The mechanism for automatic angle rotation and automatic oil return of a scraper according to claim 1, characterized in that: The main support plate (10) is provided with symmetrical guide cylinders. Guide columns are inserted inside the guide cylinders. A return oil knife support plate (8) is sleeved on the guide column. The top of the guide column is fixedly connected to the return oil knife support plate (8) by a threaded column. A return oil knife connecting strip (11) is fixedly connected to the bottom of the guide column inside the guide cylinder. The front end of the return oil knife connecting strip (11) is provided with symmetrical fixing holes. A return oil knife (13) is provided at the bottom of the return oil knife connecting strip (11). The return oil knife (13) is fixed by a fixing member (12) corresponding to the fixing hole.

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