An automatic adjusting casting nozzle stage

Abstract

This application belongs to the field of casting and rolling technology, and discloses an automatically adjustable casting nozzle platform, including: a lifting adjustment mechanism that adjusts the height of the casting nozzle platform housing through a screw and nut transmission, and feeds back the lifting position of the casting nozzle platform housing to the screw and nut transmission module by measuring the distance between the platform and the casting mill frame using a lifting laser rangefinder; and a horizontal adjustment mechanism including a sliding plate cylinder and a horizontal laser rangefinder. The casting nozzle platform sliding plate is connected to the telescopic rod of the sliding plate cylinder, and the horizontal laser rangefinder is installed on the casting nozzle platform sliding plate, feeding back the horizontal position of the casting nozzle to the sliding plate cylinder by measuring the horizontal distance to the casting mill frame. This application automatically aligns the casting nozzle to the center of the roll gap according to the adjusted roll gap size and the feedback size from the lifting laser rangefinder. Based on the plate thickness and casting speed set in the production process, and according to the feedback size from the horizontal laser rangefinder, it automatically matches and adjusts the distance between the casting nozzle and the vertical casting centerline, thereby forming an automatically adjustable casting forming zone.

Description

Technical Field

[0001] This invention belongs to the field of casting and rolling technology, and more specifically, relates to an automatic adjusting casting nozzle platform. Background Technology

[0002] When casting and rolling some non-ferrous metals or alloy plates, the casting and rolling method is necessary due to limitations imposed by their grain structure and rolling processes. For example, magnesium alloys possess characteristics such as low density, high specific strength and specific stiffness, good vibration damping, excellent electromagnetic shielding performance, and radiation resistance. Therefore, magnesium alloys have significant application value and broad application prospects in the automotive, electronics, electrical appliances, aerospace, defense, and transportation industries. Compared with the traditional casting-following-rolling production method, continuous casting and rolling of metals significantly shortens the process flow and reduces production costs, and has seen substantial development in recent years.

[0003] During casting and rolling, the casting nozzle and the casting roll form the required molten pool in the casting and rolling zone. Considering factors such as roll changing, adjustment of the rolling center line, adjustment of product specifications, and maintenance, in order to obtain high-quality cast and rolled strip billets and improve production efficiency, it is necessary to adjust the position of the casting nozzle at any time during casting and rolling to ensure a suitable gap between the casting nozzle and the surface of the casting roll.

[0004] Modern casting and rolling mills are equipped with devices to adjust the vertical height and horizontal feed of the casting nozzle to ensure that the nozzle and the rolling rolls form the desired casting zone. However, many current nozzle tables still rely on manual adjustment of the nozzle position, or hydraulic cylinders for forward and backward adjustment. These methods lack other signal feedback besides motor feedback, resulting in less accurate nozzle position adjustment. Summary of the Invention

[0005] The automatic adjusting casting nozzle table of the present invention adopts a dual-station design of maintenance station and working station, which improves the convenience of casting and rolling production process. The closed-loop control adjusts the horizontal and vertical position of the casting nozzle with high accuracy to ensure the quality of magnesium alloy strip production. The high degree of automation can match other process parameters of the casting and rolling vertical plate and automatically adjust the corresponding position, reducing the number of operators in the production process and improving the cost of magnesium alloy casting and rolling production.

[0006] This application provides an automatically adjusting casting nozzle stage, comprising:

[0007] The lifting and adjusting mechanism includes a screw and nut transmission module and a lifting laser rangefinder. The screw and nut transmission module adjusts the height of the casting nozzle platform housing through screw and nut transmission. The lifting laser rangefinder is installed at the lower part of the casting nozzle platform housing and feeds back the lifting position of the casting nozzle platform housing to the screw and nut transmission module by measuring its distance from the casting mill frame.

[0008] The screw and nut transmission module includes a lifting adjustment motor, a lifting adjustment screw, a lifting adjustment nut, a lifting adjustment slider, and a lifting adjustment slide block. The output shaft of the lifting adjustment motor is connected to the lifting adjustment screw. The lifting adjustment screw is mounted on the upper end of the lifting adjustment slide block via a bearing. The lifting adjustment screw is threadedly connected to the lifting adjustment nut. The lifting adjustment nut is fixedly connected to the lifting adjustment slider. The lifting adjustment slider is slidably mounted on the lifting adjustment slide block and is fixedly connected to the casting nozzle box.

[0009] The horizontal adjustment mechanism includes a slide plate push-pull cylinder and a horizontal laser rangefinder. The slide plate push-pull cylinder is horizontally arranged on the casting nozzle platform housing. The casting nozzle platform slide plate is connected to the telescopic rod of the slide plate push-pull cylinder. The casting nozzle platform slide plate is mounted on the casting nozzle platform housing, the casting nozzle is mounted on the casting nozzle platform slide plate, and the horizontal laser rangefinder is mounted on the casting nozzle platform slide plate. By measuring the horizontal distance to the casting mill frame, the horizontal position of the casting nozzle is fed back to the slide plate push-pull cylinder.

[0010] The horizontal adjustment mechanism also includes a horizontal adjustment motor and a horizontal positioning screw adjuster. The horizontal positioning screw adjuster includes a worm gear, a worm, and a lead screw. The output shaft of the horizontal adjustment motor is connected to the worm, and the inner cavity of the worm gear is threadedly connected to the lead screw. The end position of the lead screw serves as a limit to restrict the casting nozzle slide plate from being pushed and pulled by the slide plate push-pull cylinder.

[0011] Optionally, the output shaft of the lifting adjustment motor is connected to the lifting adjustment screw via a coupling.

[0012] Optionally, the horizontal adjustment motor is connected to the worm gear of the horizontal positioning screw adjuster via a coupling.

[0013] Optionally, the horizontal positioning screw adjuster is equipped with an encoder, which is used to detect the number of rotations of the output shaft of the horizontal adjustment motor.

[0014] Optionally, the sliding plate push-pull cylinder pushes the casting nozzle platform sliding plate to switch between a maintenance station and a working station. The maintenance station is the station for maintaining the casting nozzle and the front box, and the working station is the positioning position of the casting nozzle adjusted by the horizontal positioning screw adjuster during the casting and rolling production process.

[0015] Compared with the prior art, this application has the following advantages:

[0016] (1) The lifting laser rangefinder measures the distance between itself and the casting and rolling mill frame to provide feedback and adjust the lifting position of the lifting adjustment mechanism, forming a closed-loop control to ensure that the casting nozzle is positioned and aligned with the center of the roll gap.

[0017] (2) The casting nozzle slide plate can be quickly switched between the maintenance station and the working station by means of the telescopic rod of the slide plate push-pull cylinder.

[0018] (3) Position the casting nozzle plate slide by the plate push-pull cylinder through the horizontal adjustment coupling to adjust the actual position of the casting nozzle plate slide being pulled back to the working position by the plate push-pull cylinder.

[0019] (4) The automatic adjusting casting nozzle table of this application determines the casting roll gap size based on the feedback data of the roll gap adjustment AGC cylinder installed below the lower roll of the casting and rolling mill. Based on the adjusted roll gap size and the feedback size of the lifting laser rangefinder, the casting nozzle is automatically aligned to the center of the roll gap. Based on the plate thickness and casting speed of the production process set in the production enterprise, the distance between the casting nozzle and the vertical casting center line is automatically matched and adjusted according to the feedback size of the horizontal laser rangefinder, thereby forming an automatically adjustable casting forming area. Attached Figure Description

[0020] Figure 1 This is a diagram showing the arrangement of the automatic adjusting casting nozzle platform on the casting and rolling mill according to an embodiment of the present invention.

[0021] Figure 2 This is an overall structural diagram of the automatic adjusting casting nozzle stage provided in an embodiment of the present invention.

[0022] Figure 3 The rear view of the casting nozzle stage sliding plate and the casting nozzle is shown in the embodiment of the present invention.

[0023] Figure 4 This is a structural diagram of the lifting and adjusting mechanism in an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of two workstations according to an embodiment of the present invention.

[0025] In the diagram: 1. Casting nozzle platform; 2. Casting and rolling mill frame; 3. Lifting and adjusting mechanism; 4. Casting nozzle; 5. Casting nozzle platform slide plate; 6. Casting nozzle platform housing; 7. Horizontal adjustment mechanism; 8. Horizontal laser rangefinder; 9. Lifting laser rangefinder; 10. Slide table push-pull cylinder; 11. Horizontal adjustment motor; 12. Horizontal adjustment coupling; 13. Horizontal positioning screw adjuster; 14. Encoder; 15. Lifting and adjusting motor; 16. Lifting and adjusting coupling; 17. Lifting and adjusting screw; 18. Bearing; 19. Lifting and adjusting slide block; 20. Lifting and adjusting nut; 21. Lifting and adjusting slider; a. Maintenance station; b. Working station. Detailed Implementation

[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after connection. "Rotary connection" refers to a connection where the components can rotate relative to each other after connection. The directional terms mentioned in the embodiments of this application, such as "upper," "lower," "inner," and "outer," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. The phrase "two components obtain an integrated structure through an integral molding process" means that during the formation of one of the two components, that component is connected to the other component, without requiring further processing (such as bonding, welding, snap-fit ​​connection, or screw connection) to connect the two components together.

[0028] In this embodiment, the automatically adjusting casting nozzle platform 1 is installed in the middle of the casting and rolling mill frame 2, and the entire casting nozzle platform is installed inside the frame on the inlet side of the casting and rolling mill. See Figure 1 As shown. The casting nozzle platform housing is the load-bearing structure of the entire device. The automatically adjustable casting nozzle platform includes: a lifting adjustment mechanism 3, which adjusts the height of the casting nozzle platform 1 vertically; and a horizontal adjustment mechanism 7, which moves the casting nozzle platform slide plate 5 via a sliding plate push-pull cylinder 10 to adjust the horizontal position of the casting nozzle platform. The casting nozzle platform is made of heat-resistant steel, and the nozzle holding part is made of cast iron.

[0029] The lifting and adjusting mechanism 3 uses a screw and nut transmission module to adjust the height of the casting nozzle, such as... Figure 2As shown in the dashed box, the system includes a lifting adjustment motor 15, a coupling 16, a lifting adjustment screw 17, a lifting adjustment nut 20, a lifting adjustment slider 21, and a lifting adjustment slide block 19. The output shaft of the lifting adjustment motor 15 is connected to one end of the coupling 16, and the other end of the coupling 16 is connected to the lifting adjustment screw 17. The lifting adjustment motor 15 drives the lifting adjustment screw 17 to rotate, and the lifting adjustment nut 20 is threaded onto the lifting screw 17. The lifting adjustment nut 20 is fixedly connected to the lifting adjustment slider 21, which is slidably mounted on the lifting adjustment slide block 19, allowing it to slide up and down on the slide block. The lifting adjustment slider 21 is fixedly connected to the casting nozzle housing 6 by bolts. This allows the casting nozzle housing 6 and the lifting adjustment slider 21 to slide up and down together on the lifting adjustment slide block. The lifting adjustment screw 17 is mounted on the upper end of the lifting adjustment slide block 19 via a bearing 18, preventing the lifting adjustment screw 17 from moving up and down.

[0030] When the lifting adjustment motor 15 is running, its output shaft drives the lifting adjustment screw 17 to rotate via a coupling, thereby causing the lifting adjustment nut 20, which is threaded to it, to move up and down within the lifting adjustment slide 19. During the up-and-down movement of the lifting adjustment nut 20, the lifting adjustment slider 21 connected to it moves up and down along with it, and the casting nozzle platform housing 6, which is fixedly connected to the lifting adjustment slider 21, also moves up and down. This allows for adjustment of the height of the casting nozzle platform.

[0031] Furthermore, in order to enable the casting nozzle platform to automatically control its height, a lifting laser rangefinder 9 is also provided. The lifting laser rangefinder 9 is installed at the lower part of the casting nozzle platform housing 6. The lifting laser rangefinder 9 measures the distance between itself and the casting mill frame 2 to provide feedback and adjust the lifting position of the lifting adjustment mechanism 3, forming a closed-loop control to ensure the accuracy of the casting nozzle positioning parameters.

[0032] Therefore, the lifting and adjusting mechanism 3 can be used to automatically match and adjust the position of the casting nozzle based on the feedback data from the laser ranging. The upper roll of the casting mill is fixed, while the position of the lower roll is adjustable up and down. The roll gap size is determined based on the feedback data from the AGC cylinder for roll gap adjustment installed below the lower roll of the casting mill. The casting nozzle is automatically aligned to the center of the roll gap based on the adjusted roll gap size and the feedback size from the lifting and adjusting laser ranging.

[0033] For example, the casting nozzle needs to be aligned with the horizontal center line of the casting mill between the two rolls. If the distance between the horizontal center line and the casting mill stand 2 changes, the lifting adjustment motor 15 will start, driving the lifting adjustment screw 17 to rotate. This causes the lifting adjustment nut 20, which is threaded to it, to move the casting nozzle platform housing 6 up and down via the lifting adjustment slider 21, thus adjusting the height of the casting nozzle platform to maintain alignment with the horizontal center line. For instance, if the distance between the horizontal center line and the casting mill stand 2 is 1500mm, then the distance between the casting nozzle 4 and the casting mill stand 2 should also be 1500mm. Subtracting the distance between the casting nozzle 4 and the lifting laser rangefinder 9 on the casting nozzle platform housing 6 gives the correct distance between the lifting laser rangefinder 9 and the casting mill stand 2. For example, if the distance between the casting nozzle 4 and the lifting laser rangefinder 9 on the casting nozzle platform housing 6 is 300mm, then the distance between the lifting laser rangefinder 9 and the casting mill frame 2 should be 1200mm. If the lifting laser rangefinder 9 measures a distance of 1100mm from the casting mill frame 2, then the lifting adjustment motor 15 starts, driving the casting nozzle platform housing 6 to rise until the distance between the lifting laser rangefinder 9 and the casting mill frame 2 is 1200mm. At this point, the distance between the casting nozzle 4 and the casting mill frame 2 is also adjusted to 1500mm. If the lifting laser rangefinder 9 measures a distance of 1300mm from the casting mill frame 2, then the lifting adjustment motor 15 drives the casting nozzle platform housing 6 to descend until the distance between the lifting laser rangefinder 9 and the casting mill frame 2 is 1200mm. At this point, the distance between the casting nozzle 4 and the casting mill frame 2 is also adjusted to 1500mm.

[0034] The casting nozzle slide plate 5 is mounted on the casting nozzle housing 6, specifically installed in the side plates of the casting nozzle housing 6, and its height is adjusted along with the casting nozzle housing 6. The casting nozzle slide plate 5 moves horizontally to adjust the horizontal position of the casting nozzle 4. The horizontal adjustment mechanism 7 includes the casting nozzle slide plate 5 and a slide plate push-pull cylinder 10, with the casting nozzle 4 mounted on the casting nozzle slide plate 5. The horizontally arranged slide plate push-pull cylinder 10 is fixedly connected to the casting nozzle housing 6, and the casting nozzle slide plate 5 is connected to the telescopic rod of the slide plate push-pull cylinder 10. The movement of the casting nozzle slide plate 5 is achieved by extending and retracting the telescopic rod, specifically, it can quickly switch between maintenance station a and working station b.

[0035] The maintenance station a is the station where the casting nozzle and front box equipment need to be replaced and maintained, while the working station b is the actual positioning position of the casting nozzle during the casting and rolling production process. The maintenance station does not require casting and rolling production, so precise positioning of the casting nozzle's horizontal position is not necessary. When switching to the working station b, precise positioning is required. The horizontal adjustment mechanism 7 also includes a horizontal adjustment motor 11, a horizontal adjustment coupling 12, a horizontal positioning screw adjuster 13, and an encoder 14. The output shaft of the horizontal adjustment motor 11 is connected to one end of the horizontal adjustment coupling 12, and the other end of the horizontal adjustment coupling 12 is connected to the input end of the horizontal positioning screw jack 13. The horizontal positioning screw adjuster 13 is a screw jack with a horizontally set lead screw. It consists of components such as a worm gear, a lead screw, etc. The worm gear, as the input end, is connected to the horizontal adjustment motor 11 through the horizontal adjustment coupling 12. The horizontal adjustment motor 11 drives the worm gear to rotate, and the worm gear drives the worm wheel to rotate at a reduced speed. The inner cavity of the worm wheel is machined with an internal thread, which is threaded to the lead screw, thereby driving the lead screw to move horizontally. The end position of the lead screw can be used as a limit to restrict the casting nozzle plate 5 from being pushed and pulled by the plate push-pull cylinder 10, thereby adjusting the actual position of the casting nozzle plate 5 being pulled back to the working position b by the plate push-pull cylinder 10.

[0036] The horizontal positioning screw adjuster 13 is equipped with an encoder 14, which is used to detect the number of rotations of the output shaft of the horizontal adjustment motor 11 to ensure adjustment accuracy.

[0037] The horizontal laser rangefinder 8 is installed on the casting nozzle slide plate 5. By measuring the horizontal distance to the casting mill frame 2, it feeds back the horizontal position of the casting nozzle to the horizontal adjustment motor 11. The horizontal adjustment motor 11 controls its speed, thereby adjusting the extension position of the lead screw.

[0038] Based on the plate thickness (i.e., roll gap width) and casting speed (i.e., roll linear speed) set in the production process of the manufacturing enterprise, the distance between the casting nozzle and the vertical casting center line is automatically adjusted according to the feedback dimension from the horizontal laser rangefinder 8.

[0039] The automatic adjusting casting nozzle platform of this application features a fixed upper roll and an adjustable lower roll position on the casting mill. The casting roll gap size is determined based on feedback data from an AGC cylinder installed below the lower roll. The casting nozzle is automatically aligned to the center of the roll gap based on the adjusted gap size and feedback from the lifting laser rangefinder. The system automatically matches the production process of the manufacturing enterprise based on the production line speed and gap width, and automatically adjusts the distance between the casting nozzle and the vertical casting centerline based on feedback from the horizontal laser rangefinder, thus forming an automatically adjustable casting forming zone.

[0040] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications are all within the protection scope of the claims of the present invention.

Claims

1. An automatically adjustable nozzle table, characterized in that The utility model relates to a kind of casting nozzle positioner, including: Lifting adjustment mechanism, including screw-nut transmission module and lifting laser range finder, the screw-nut transmission module is adjusted the height of nozzle table box by screw-nut transmission, and the lifting laser range finder is installed in the lower part of nozzle table box, and lifting laser range finder is fed back the lifting position of nozzle table box to screw-nut transmission module by measuring its distance with casting mill frame, The screw-nut transmission module includes lifting adjustment motor, lifting adjustment screw, lifting adjustment nut, lifting adjustment slider and lifting adjustment slide, the output shaft of lifting adjustment motor is connected with lifting adjustment screw, the lifting adjustment screw is installed in the upper end of lifting adjustment slide by bearing, the lifting adjustment screw is threadedly connected with the lifting adjustment nut, the lifting adjustment nut is fixedly connected with the lifting adjustment slider, the lifting adjustment slider is slidingly installed on lifting adjustment slide, and the lifting adjustment slider is fixedly connected with nozzle table box; Horizontal adjustment mechanism, including slide plate push-pull cylinder and horizontal laser range finder, slide plate push-pull cylinder is horizontally arranged on the nozzle table box, and casting nozzle slide plate is connected with the telescopic rod of slide plate push-pull cylinder, wherein, casting nozzle slide plate is arranged on nozzle table box, casting nozzle is arranged on casting nozzle slide plate, and horizontal laser range finder is installed on casting nozzle slide plate, and the horizontal position of casting nozzle is fed back to slide plate push-pull cylinder by measuring the horizontal distance with casting mill frame, The horizontal adjustment mechanism further includes horizontal adjustment motor and horizontal positioning screw adjuster, and the horizontal positioning screw adjuster includes worm wheel, worm and lead screw, the output shaft of horizontal adjustment motor is connected with worm, the inner cavity of worm wheel is threadedly connected with lead screw, and the end position of lead screw is used as the limit position of casting nozzle slide plate pushed by slide plate push-pull cylinder.

2. An automatically adjusted nozzle table according to claim 1, characterized in that The output shaft of lifting adjustment motor is connected with lifting adjustment screw by coupling.

3. The automatically adjusted nozzle table of claim 1, wherein, The horizontal adjustment motor is connected with the worm of horizontal positioning screw adjuster by coupling.

4. An automatically adjusted nozzle table according to claim 3, characterized in that The horizontal positioning screw adjuster is installed with encoder, and the encoder is used to detect the rotation number of horizontal adjustment motor output shaft.

5. The automatically adjusted nozzle table of claim 1, wherein, Slide plate push-pull cylinder pushes the casting nozzle slide plate to switch between maintenance station and working station, the maintenance station is the station for maintaining casting nozzle and front box, and the working station is the casting nozzle positioning position adjusted by the horizontal positioning screw adjuster in casting production process.

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