Positioning mechanism for tundish stopper rod inner hole coating

Abstract

The utility model relates to a positioning mechanism for coating an inner hole of a tundish stopper rod, and effectively solves the problems that the inner hole cannot be quickly and accurately positioned, the wall of the inner hole cannot be uniformly coated, and the production quality and efficiency of the stopper rod are influenced. According to the positioning mechanism for tundish stopper rod inner hole coating, the multiple clamping and positioning mechanisms can be driven to move at the same time through the worm gear transmission mechanism, the clamping ranges of the clamping and positioning mechanisms are adjusted in a unified mode, multiple stopper rods can be clamped at the same time, and the electric telescopic rod can drive the coating mechanism to move downwards; the coating mechanism always vertically corresponds to the axis of each clamping and positioning mechanism, so that the coating mechanism can be accurately inserted into the axis parts of the inner holes of the plurality of stopper rods, accurately positions the inner holes of the stopper rods and uniformly coats the inner holes of the stopper rods, the influence on the use performance of the stopper rods due to non-uniform coating is effectively prevented, and the machining quality and efficiency of the stopper rods can be greatly improved; and the adjustable clamping and positioning mechanism can be conveniently used when stopper rods of different sizes are machined.

Description

Technical Field

[0001] This utility model belongs to the technical field of stopper rod processing equipment, specifically relating to a positioning mechanism for coating the inner hole of an intermediate tundish stopper rod. Background Technology

[0002] The stopper rod is a crucial component for controlling the flow rate of molten steel from the tundish to the continuous casting mold and the liquid level in the mold. A typical stopper rod consists of a rod body and a rod head located at the bottom of the rod body. An argon gas channel is located inside the rod body, and a gas guide hole is located on the rod head, with the guide hole and the argon gas channel coaxial. The stopper rod primarily functions to open and close the tundish. Besides automatically controlling the flow rate of molten steel between the tundish and the mold, it also allows argon and other inert gases to be blown into the tundish through the argon blowing hole. The stopper rod is only used during start-up and stop-up casting; otherwise, it is in the open position.

[0003] During the processing of stopper rods, it is necessary to coat the inner bore of the stopper rod with an axial corrosion-resistant coating to prevent internal oxidation or high-temperature corrosion that could affect the performance of the stopper rod. However, due to the small diameter and deep depth of the inner bore of the stopper rod, it is not convenient to quickly and accurately position the inner bore when coating it, it is not convenient to perform batch operations on multiple stopper rods, and it is not possible to uniformly coat the inner bore wall, which affects the production quality and efficiency of the stopper rods. Utility Model Content

[0004] To address the above issues and overcome the shortcomings of existing technologies, this utility model provides a positioning mechanism for coating the inner bore of tundish stopper rods. This positioning mechanism enables the coating mechanism to be accurately inserted into the axial position of multiple stopper rod inner bores for precise positioning, thereby uniformly coating the inner bores of the stopper rods. This effectively prevents uneven coating from affecting the performance of the stopper rods and greatly improves the processing quality and efficiency of the stopper rods. Furthermore, the adjustable clamping and positioning mechanism facilitates the clamping and fixing of stopper rods of different diameters, making it convenient for processing stopper rods of different sizes.

[0005] A positioning mechanism for coating the inner hole of a stopper rod in an intermediate tundish includes a support base and a transverse sliding frame. A fixed box is fixedly connected to the lower surface of the support base, and a worm gear transmission mechanism is provided inside the fixed box. A clamping positioning mechanism is provided on the upper surface of the support base, and the bottom end of the clamping positioning mechanism is connected to the worm gear transmission mechanism. A stopper rod is provided inside the clamping positioning mechanism, and an inner hole is formed at the axis of the stopper rod. The transverse sliding frame is slidably connected to the upper surface of the support base, and electric telescopic rods are fixedly installed on both sides of the frame. A lifting plate is fixedly connected to the top of the movable part of the electric telescopic rod, and a coating mechanism for coating the inner hole of the stopper rod is inserted into the upper surface of the lifting plate.

[0006] Preferably, the worm gear transmission mechanism includes a drive motor, a worm, a worm wheel, and a spur gear. The worm is connected to the output end of the drive motor via a spline and extends laterally through the interior of the fixed box. The worm wheel is fixedly connected to the bottom of the spur gear and coaxially connected with the spur gear. There are several worm wheels and spur gears, and the number of fixed boxes is the same as the number of worm wheels. Several worm wheels and spur gears are vertically rotatably connected to the interior of several fixed boxes, and several worm wheels are all connected to the worm gear transmission.

[0007] Preferably, the clamping and positioning mechanism includes a first clamping rod, a first rack, a second clamping rod, and a second rack. The first rack is fixedly connected to the bottom end of the first clamping rod, and the second rack is fixedly connected to the bottom end of the second clamping rod. There are two of each of the first and second clamping rods, and the first and second racks at the bottom of both the first and second clamping rods mesh with the corresponding spur gears below them. Both the first and second racks pass through the interior of their corresponding fixing boxes. Both the first and second clamping rods are slidably connected to the upper surface of the support base. The number of clamping and positioning mechanisms is the same as the number of spur gears, and several clamping and positioning mechanisms are respectively connected to several spur gears for transmission.

[0008] Preferably, the coating mechanism includes vertical coating nozzles, nozzles, a splitter pipe, and a solenoid valve. The number of vertical coating nozzles is the same as the number of clamping and positioning mechanisms. Each clamping and positioning mechanism is provided with a stopper rod inside, and several vertical coating nozzles are vertically aligned with the inner holes of the stopper rods.

[0009] Preferably, each of the vertical coating nozzles is connected to the diversion end of the diversion pipe and is vertically installed on the upper surface of the lifting plate. Each of the several coating nozzles has vertically equidistant nozzles arranged around its bottom. The number of solenoid valves is the same as the number of vertical coating nozzles and they are respectively installed at the connection points between the diversion pipe and the several vertical coating nozzles. The liquid inlet end of the diversion pipe is connected to the external coating pipe.

[0010] Preferably, both sides of the upper surface of the support base are fixedly connected to slide blocks, and the transverse sliding frame is slidably connected inside the slide blocks. The bottom of both sides of the transverse sliding frame is threaded with clamping bolts, and the clamping bolts can abut against the upper surface of the slide block.

[0011] The beneficial effects of the above technical solution are as follows:

[0012] This intermediate bale stopper rod inner bore coating positioning mechanism, through the arrangement of clamping positioning mechanism, electric telescopic rod and coating mechanism, allows the worm gear transmission mechanism to simultaneously drive the movement of multiple clamping positioning mechanisms, enabling uniform adjustment of the clamping range of the clamping positioning mechanisms, facilitating the simultaneous clamping of multiple stoppers. The electric telescopic rod drives the coating mechanism to move downwards, and the coating mechanism always aligns vertically with the axis of each clamping positioning mechanism. Therefore, the coating mechanism can be accurately inserted into the axial position of multiple stopper rod inner bores for precise positioning, thereby uniformly coating the inner bores of the stoppers and effectively preventing uneven coating from affecting the performance of the stoppers. This greatly improves the processing quality and efficiency of the stoppers. Furthermore, the adjustable clamping positioning mechanism facilitates the clamping and fixing of stoppers of different diameters, making it convenient for processing stoppers of different sizes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the horizontal sliding frame of this utility model in disassembled state;

[0015] Figure 3 This is a schematic diagram of the coating mechanism of this utility model in disassembled state;

[0016] Figure 4 This is a schematic diagram of the worm gear transmission mechanism and clamping and positioning mechanism of this utility model;

[0017] Figure 5 This utility model Figure 4 A diagram illustrating the split state;

[0018] Figure 6 This is a schematic diagram of the clamping and positioning mechanism of this utility model;

[0019] Figure 7 This is a schematic diagram showing the state of the inner hole of the stopper rod during the coating process of this utility model.

[0020] In the diagram: 1. Support base; 2. Lateral sliding frame; 3. Fixing box; 4. Electric telescopic rod; 5. Lifting plate; 6. Drive motor; 7. Worm gear; 8. Worm wheel; 9. Spur gear; 10. First clamping rod; 11. First rack; 12. Second clamping rod; 13. Second rack; 14. Vertical coating nozzle; 15. Nozzle; 16. Diverter pipe; 17. Solenoid valve; 18. Slide seat; 19. Clamping bolt. Detailed Implementation

[0021] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 7 The embodiments are described in detail below.

[0022] This embodiment provides a positioning mechanism for coating the inner hole of an intermediate packing stopper rod, as shown in the attached figure. Figure 1-7 As shown, the device includes a support base 1 and a transverse sliding frame 2. A fixed box 3 is fixedly connected to the lower surface of the support base 1, and a worm gear transmission mechanism is installed inside the fixed box 3. The worm gear transmission mechanism includes a drive motor 6, a worm 7, a worm wheel 8, and a spur gear 9. The worm 7 is connected to the output end of the drive motor 6 via a spline and passes laterally inside the fixed box 3. The worm wheel 8 is fixedly connected to the bottom of the spur gear 9 and is coaxially connected with the spur gear 9. There are several worm wheels 8 and spur gears 9, and the number of fixed boxes 3 is the same as the number of worm wheels 8. Several worm wheels 8 and spur gears 9 are vertically rotatably connected inside several fixed boxes 3, and several worm wheels 8 are all connected to the worm 7 for transmission. The drive motor 6 drives the worm 7 to rotate, which can drive several worm wheels 8 and spur gears 9 to rotate synchronously. The transmission method of the worm 7 and worm wheel 8 can play a unidirectional transmission role. When the worm 7 stops rotating, it can ensure that several worm wheels 8 and spur gears 9 remain fixed, thereby playing a fixing role for the clamping and positioning mechanism and ensuring that it can clamp the stopper rod firmly.

[0023] The upper surface of the support base 1 is provided with a clamping and positioning mechanism, and the bottom end of the clamping and positioning mechanism is connected to the worm gear transmission mechanism. The clamping and positioning mechanism includes a first clamping rod 10, a first rack 11, a second clamping rod 12, and a second rack 13. The first rack 11 is fixedly connected to the bottom end of the first clamping rod 10, and the second rack 13 is fixedly connected to the bottom end of the second clamping rod 12. There are two first clamping rods 10 and two clamping rods 12, and the first rack 11 and the second rack 13 at the bottom of the two first clamping rods 10 and the two second clamping rods 12 mesh with the corresponding spur gear 9 below them. The two first racks 11 and the two racks 13 are both inserted into the interior of their corresponding fixed boxes 3, and the two first racks 11 are on the same horizontal plane, the two second racks 13 are on the same horizontal plane, and the two first racks 11 are higher than the two second racks 13 to ensure that the two first racks 11 and the two second racks 13 do not affect each other when they move synchronously.

[0024] The plane formed by the two first clamping rods 10 and the plane formed by the two second clamping rods 12 are perpendicular to each other. The two first clamping rods 10 can move relative to each other under the drive of the spur gear 9, and the two second clamping rods 12 can also move relative to each other under the drive of the spur gear 9. The two first clamping rods 10 and the two second clamping rods 12 can synchronously move closer to or further away from the axial part of the spur gear 9 under the drive of the spur gear 9, thereby adjusting the clamping range of the clamping and positioning mechanism. Both the two first clamping rods 10 and the two second clamping rods 12 are slidably connected to the upper surface of the support base 1. The number of clamping and positioning mechanisms is the same as the number of spur gears 9. Several clamping and positioning mechanisms are respectively connected to several spur gears 9; the drive motor 6 drives the worm gear 7 to rotate, which can drive several worm wheels 8 and spur gears 9 to rotate synchronously, thereby driving the two first racks 11 and the second rack 13 outside the spur gear 9 to move relative to each other, so that the two first clamping rods 10 and the second clamping rods 12 move relative to each other synchronously, placing multiple stoppers vertically inside the corresponding clamping and positioning mechanisms. The first clamping rods 10 and the second clamping rods 12 around the perimeter can clamp and fix the stoppers in the middle, so that the axis of the stopper is on the same axis as the axis of the spur gear 9, and the stopper can be accurately positioned.

[0025] The clamping and positioning mechanism has a stopper rod inside, with an inner hole at the rod's axis. The transverse sliding frame 2 is laterally slidably connected to the upper surface of the support base 1, and electric telescopic rods 4 are fixedly installed on both sides. Slide seats 18 are fixedly connected to both sides of the upper surface of the support base 1, and the transverse sliding frame 2 is slidably connected inside the slide seats 18. The transverse sliding frame 2 uses an oblique support method. When the top of the transverse sliding frame 2 is vertically aligned with the clamping and positioning mechanism, its bottom part, slidably connected inside the slide seat 18, is at the end of the slide seat 18, facilitating the alignment and clamping of the coating mechanism. The axial part of the positioning mechanism; when the bottom of the transverse sliding frame 2 is slid to the other end, the transverse sliding frame 2 can move a longer distance, so that the top of the transverse sliding frame 2 is away from the clamping and positioning mechanism, so as to avoid obstructing the vertical part of the clamping and positioning mechanism and affecting the placement of the stopper rod. The bottom of both sides of the transverse sliding frame 2 is threaded with clamping bolts 19, and the clamping bolts 19 can abut against the upper surface of the slide block 18. By tightening the clamping bolts 19, the transverse sliding frame 2 can be clamped in the slide block 18, thereby fixing the position of the transverse sliding frame 2 and the coating mechanism.

[0026] The top of the movable rod of the electric telescopic rod 4 is fixedly connected to a lifting plate 5, and a coating mechanism for coating the inner hole of the stopper rod is inserted into the upper surface of the lifting plate 5. The coating mechanism includes vertical coating nozzles 14, nozzles 15, diverter pipes 16, and solenoid valves 17. The number of vertical coating nozzles 14 is the same as the number of clamping and positioning mechanisms. Each clamping and positioning mechanism is equipped with a stopper rod, and several vertical coating nozzles 14 are vertically aligned with the inner holes of the stopper rods in several stopper rods. All are connected to the branching end of the branch pipe 16 and vertically inserted through the upper surface of the lifting plate 5. Several vertical coating nozzles 14 are provided with vertically equidistant nozzles 15 around their bottom perimeter. The nozzles 15 spray out in the horizontal direction around the vertical coating nozzles 14. The vertical coating nozzles 14 are vertically inserted through the top of the horizontal sliding frame 2. The horizontal sliding frame 2 can limit the vertical coating nozzles 14, ensuring that they can always move vertically. The number of solenoid valves 17 is the same as the number of vertical coating nozzles 14. The components are installed at the connection points between the diversion pipe 16 and several vertical coating nozzles 14. The flow through each vertical coating nozzle 14 can be independently controlled via a solenoid valve 17. The inlet end of the diversion pipe 16 is connected to an external coating pipe containing an anti-corrosion coating material for coating the inner wall of the stopper rod. Multiple vertical coating nozzles 14 are lowered via an electric telescopic rod 4, aligning the nozzles 15 at the bottom of each nozzle with the bottom of the stopper rod's inner hole. Then, the liquid flows through the external coating pipe to the diversion pipe 16 and... The material to be coated onto the inner wall of the stopper rod is injected into multiple vertical coating nozzles 14 and sprayed outward from the nozzles 15 around the bottom of the vertical coating nozzles 14, thereby coating the inner wall of the stopper rod. At the same time, the movable rod of the electric telescopic rod 4 moves upward at a constant speed, driving the multiple vertical coating nozzles 14 to rise at a constant speed, thereby fully and evenly coating the inner walls of multiple stopper rods. The multiple vertical coating nozzles 14 are all located at the axis of the stopper rod, thus ensuring that the anti-corrosion coating is evenly applied to the side walls around the inner wall of the stopper rod.

[0027] The electric telescopic pole 4, the drive motor 6, and the solenoid valve 17 are all electrically connected to the external control unit and are all electrically connected to the external circuit through wires.

[0028] In summary, the positioning mechanism for coating the inner hole of the intermediate bale stopper rod is used in the following steps:

[0029] 1. In the initial state, the movable rod of the electric telescopic rod 4 is in the extended state, and the vertical coating nozzle 14 is in the top position. When multiple stoppers need to be processed, first move the transverse sliding frame 2 to the side that is not vertically corresponding to the clamping and positioning mechanism, and then adjust the clamping range of the clamping and positioning mechanism according to the diameter of the stopper to be processed.

[0030] 2. The worm gear 7 is driven to rotate by the drive motor 6, which in turn drives the worm wheel 8 and the spur gear 9 to rotate. This causes the first clamping rods 10 and the second clamping rods 12 around the perimeter to move closer to the center through the first rack 11 and the second rack 13. When the distance between the first clamping rods 10 on both sides is slightly greater than the diameter of the stopper rod, the drive motor 6 is stopped. Then, several stopper rods are placed vertically in each clamping and positioning mechanism.

[0031] 3. Next, continue to drive the motor 6 until the first clamping rod 10 and the second clamping rod 12 around the stopper rod completely clamp and fix the stopper rod in a vertical position. Then stop the motor 6 and control the movable body of the electric telescopic rod 4 to retract. Align the nozzles 15 at the bottom of several vertical coating nozzles 14 with the bottom of the inner hole of the stopper rod. Inject the material to be coated onto the inner wall of the stopper rod into the distribution pipe 16 and several vertical coating nozzles 14 through the external coating pipe. Spray the material outward from the nozzles 15 around the bottom of the vertical coating nozzles 14, thereby coating the inner wall of the stopper rod. At the same time, the movable body of the electric telescopic rod 4 moves upward at a constant speed, driving several vertical coating nozzles 14 to rise at a constant speed, thereby fully and evenly coating the inner walls of several stopper rods.

[0032] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A positioning mechanism for tundish nozzle coating, comprising a support seat (1) and a transverse sliding carriage (2), characterized in that: The lower surface of the support base (1) is fixedly connected to a fixed box (3), and the inside of the fixed box (3) is provided with a worm gear transmission mechanism. The upper surface of the support base (1) is provided with a clamping and positioning mechanism, and the bottom end of the clamping and positioning mechanism is connected to the worm gear transmission mechanism. The inside of the clamping and positioning mechanism is provided with a stopper rod, and the axial center of the stopper rod is provided with a stopper rod inner hole. The transverse sliding frame (2) is transversely slidably connected to the upper surface of the support base (1), and electric telescopic rods (4) are fixedly installed on both sides of it. The top end of the movable rod of the electric telescopic rod (4) is fixedly connected to a lifting plate (5), and a coating mechanism for coating the inside of the stopper rod inner hole is inserted into the upper surface of the lifting plate (5).

2. The positioning mechanism for tundish nozzle hole coating according to claim 1, characterized in that: The worm gear transmission mechanism includes a drive motor (6), a worm (7), a worm wheel (8), and a spur gear (9). The worm (7) is connected to the output end of the drive motor (6) via a spline and passes laterally through the inside of the fixed box (3). The worm wheel (8) is fixedly connected to the bottom of the spur gear (9) and is coaxially connected with the spur gear (9). There are several worm wheels (8) and spur gears (9), and the number of fixed boxes (3) is the same as the number of worm wheels (8). Several worm wheels (8) and spur gears (9) are vertically rotatably connected inside several fixed boxes (3), and several worm wheels (8) are all connected to the worm (7) for transmission.

3. The positioning mechanism for tundish nozzle hole coating according to claim 2, characterized in that: The clamping and positioning mechanism includes a first clamping rod (10), a first rack (11), a second clamping rod (12), and a second rack (13). The first rack (11) is fixedly connected to the bottom end of the first clamping rod (10), and the second rack (13) is fixedly connected to the bottom end of the second clamping rod (12). There are two of each of the first clamping rod (10) and the second clamping rod (12), and the first rack (11) and the second rack (13) at the bottom of the two first clamping rods (10) and the two second clamping rods (12) are meshed with the corresponding spur gears (9) below them. The two first racks (11) and the second rack (13) are both inserted into the interior of the corresponding fixed box (3). The two first clamping rods (10) and the second clamping rods (12) are slidably connected to the upper surface of the support base (1). The number of clamping and positioning mechanisms is the same as the number of spur gears (9), and several clamping and positioning mechanisms are respectively connected to several spur gears (9) for transmission.

4. The positioning mechanism for tundish nozzle hole coating according to claim 1, characterized in that: The coating mechanism includes a vertical coating nozzle (14), a nozzle (15), a diverter pipe (16), and a solenoid valve (17). The number of vertical coating nozzles (14) is the same as the number of clamping and positioning mechanisms. Each clamping and positioning mechanism is equipped with a stopper rod inside, and several vertical coating nozzles (14) are vertically aligned with the inner holes of the stopper rods in several stopper rods.

5. The positioning mechanism for tundish nozzle hole coating according to claim 4, characterized in that: Several vertical coating nozzles (14) are connected to the diversion end of the diversion pipe (16) and are vertically installed on the upper surface of the lifting plate (5). The bottom of several vertical coating nozzles (14) is provided with vertically equidistant nozzles (15). The number of solenoid valves (17) is the same as the number of vertical coating nozzles (14) and they are respectively installed at the connection between the diversion pipe (16) and several vertical coating nozzles (14). The liquid inlet end of the diversion pipe (16) is connected to the external coating pipe.

6. The positioning mechanism for tundish nozzle hole coating according to claim 1, characterized in that: Both sides of the upper surface of the support base (1) are fixedly connected to slide blocks (18), and the transverse sliding frame (2) is slidably connected inside the slide block (18). The bottom of both sides of the transverse sliding frame (2) is threaded with clamping bolts (19), and the clamping bolts (19) can abut against the upper surface of the slide block (18).

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