Automatic adjustment casting nozzle table

Abstract

The invention belongs to the technical field of casting and rolling, and discloses an automatic adjusting casting mouth table which comprises a lifting adjusting mechanism, a laser distance measuring module and a casting and rolling machine frame, a laser distance measuring module, a casting and rolling machine frame control module, a casting and rolling machine frame control module, a casting and rolling machine frame control module, a casting and rolling machine frame control module and a casting and rolling machine frame control module. The horizontal adjusting mechanism comprises a sliding plate push-and-pull cylinder and a horizontal laser range finder, the casting nozzle table sliding plate is connected with a telescopic rod of the sliding plate push-and-pull cylinder, the horizontal laser range finder is installed on the casting nozzle table sliding plate, and the horizontal position of the casting nozzle is fed back to the sliding plate push-and-pull cylinder by measuring the horizontal distance between the casting nozzle table sliding plate and the casting and rolling machine rack. The casting nozzle is automatically aligned to the center of the roll gap according to the adjusted roll gap size and the lifting laser ranging feedback size, and the distance between the casting nozzle and the vertical casting and rolling center line is automatically matched and adjusted according to the plate thickness of casting and rolling production and the casting and rolling production speed set in the production process and the feedback size of the horizontal laser range finder. Therefore, a cast-rolling forming area range capable of being automatically adjusted is formed.

Description

Technical Field

[0001] The invention belongs to the technical field of casting and rolling, and in particular relates to an automatically adjustable casting nozzle platform. Background Art

[0002] When casting and rolling some non-ferrous metals or alloy plates, the casting and rolling method needs to be adopted due to the limitations of their grain structure and rolling process. For example, magnesium alloy has the characteristics of low density, high specific strength and specific stiffness, good vibration damping, excellent electromagnetic shielding performance, and radiation resistance. Therefore, magnesium alloy has important application value and broad application prospects in the fields of automobiles, electronics, electrical appliances, aerospace, national defense, military industry, transportation, etc. Compared with the traditional casting and rolling production method, the continuous casting and rolling production method of metals has greatly shortened the process flow and reduced production costs, and has made great progress in recent years.

[0003] During casting and rolling, the casting nozzle and the casting roller form the required molten pool in the casting and rolling area. Due to factors such as roll replacement, rolling centerline alignment adjustment, product specification adjustment, and maintenance, in order to obtain better quality cast-rolled plate and 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 an appropriate gap between the casting nozzle and the surface of the casting roller.

[0004] Current casting and rolling mills all have devices for adjusting the vertical height and horizontal feed of the casting nozzle so that the casting nozzle and the casting roll form the required casting and rolling area. However, at present, many casting nozzles are adjusted manually, and some are adjusted forward and backward by hydraulic cylinders, but there is no other signal feedback except motor feedback, so the casting and rolling mill casting nozzle position adjustment is not so accurate. Summary of the invention

[0005] The automatically adjustable casting nozzle table of the present invention adopts a double-station design of a maintenance station and a working station, which improves the convenience of the casting and rolling production process. The closed-loop control adjusts the horizontal and lifting position of the casting nozzle with high precision to ensure the quality of magnesium alloy plates and strips produced by casting and rolling. The high degree of automation can automatically adjust the corresponding position to match other process parameters of the casting and rolling vertical plate, reduce the number of operators in the production process, and improve the cost of magnesium alloy casting and rolling production.

[0006] The present application provides an automatically adjustable casting nozzle table, comprising:

[0007] The lifting adjustment mechanism includes a screw nut transmission module and a lifting laser distance meter. The screw nut transmission module adjusts the height of the nozzle table box through screw nut transmission. The lifting laser distance meter is installed at the lower part of the nozzle table box. The lifting laser distance meter feeds back the lifting position of the nozzle table box to the screw nut transmission module by measuring the distance between the lifting laser distance meter and the casting and rolling mill frame.

[0008] The screw-nut transmission module comprises a lifting adjustment motor, a lifting adjustment screw, a lifting adjustment nut, a lifting adjustment slider and a lifting adjustment slider, the output shaft of the lifting adjustment motor is connected to the lifting adjustment screw, the lifting adjustment screw is installed on the upper end of the lifting adjustment slider through 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 installed on the lifting adjustment slider, and the lifting adjustment slider is fixedly connected to the casting nozzle platform 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 box body. 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 arranged on the casting nozzle platform box body, the casting nozzle is arranged on the casting nozzle platform slide plate, and the horizontal laser rangefinder is installed on the casting nozzle platform slide plate. By measuring the horizontal distance with the casting and rolling 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 spiral adjuster. The horizontal positioning spiral adjuster includes a worm wheel, 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 wheel is threadedly connected to the lead screw. The end position of the lead screw is used as a limit to limit the casting nozzle table slide being pushed and pulled by the slide push-pull cylinder.

[0011] Optionally, the output shaft of the lifting and adjusting motor is connected to the lifting and adjusting screw through a coupling.

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

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

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

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

[0016] (1) The lifting laser rangefinder measures the distance between it and the casting and rolling mill frame to feedback and adjust the lifting position of the lifting adjustment mechanism, forming a closed-loop control to ensure the positioning of the casting nozzle and the alignment of the casting nozzle to the center of the roll gap.

[0017] (2) The telescopic rod of the slide push-pull cylinder is used to realize the rapid switching of the casting nozzle slide plate between the maintenance station and the working station.

[0018] (3) The position where the nozzle table slide is pushed and pulled by the slide push-pull cylinder is positioned by adjusting the coupling horizontally, thereby adjusting the actual position where the nozzle table slide is pulled back to the working station by the slide push-pull cylinder.

[0019] (4) The automatically adjustable casting nozzle table of the present application determines the casting and rolling roll gap size based on the feedback data of the AGC cylinder for roll gap adjustment installed below the lower roll of the casting and rolling machine, automatically aligns the casting nozzle to the center of the roll gap based on the adjusted roll gap size and the feedback size of the lifting laser distance measurement, and automatically matches and adjusts the distance between the casting nozzle and the vertical casting and rolling center line based on the feedback size of the horizontal laser distance meter according to the plate thickness and casting and rolling production speed set in the production process of the production enterprise, thereby forming an automatically adjustable casting and rolling forming area range. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a layout diagram of the automatic adjustment nozzle table provided in an embodiment of the present invention on a casting and rolling mill.

[0021] Figure 2 This is an overall structural diagram of the automatically adjustable casting nozzle platform provided in an embodiment of the present invention.

[0022] Figure 3 This is a rear view of the embodiment of the present invention, in which the sliding plate of the nozzle platform and the nozzle are hidden.

[0023] Figure 4 1 is a structural diagram of the lifting and lowering adjustment mechanism in an embodiment of the present invention.

[0024] Figure 5 Schematic diagram of two workstations according to an embodiment of the present invention.

[0025] In the figure: 1. casting nozzle table; 2. casting and rolling mill frame; 3. lifting adjustment mechanism; 4. casting nozzle; 5. casting nozzle table slide plate; 6. casting nozzle table box; 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 adjustment motor; 16. lifting adjustment coupling; 17 lifting adjustment screw; 18. bearing; 19. lifting adjustment slide; 20. lifting adjustment nut; 21. lifting adjustment slider; a. maintenance station; b. working station. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be detachably connected or non-detachably connected; it can be directly connected or indirectly connected through an intermediate medium. Among them, "fixed connection" means that the relative position relationship after connection remains unchanged. "Rotational connection" means that the two parts are connected to each other and can rotate relative to each other after connection. The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer", etc., are only reference directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. Among them, the two components are obtained by an integrated molding process. The integrated structure means that in the process of forming one of the two components, the component is connected to the other component, and there is no need to connect the two components together by reprocessing (such as bonding, welding, snap connection, screw connection).

[0028] The automatic adjustment nozzle table of this embodiment, the nozzle table 1 is installed in the middle of the casting and rolling mill frame 2, and the nozzle table is installed in the frame on the inlet side of the casting and rolling mill. Figure 1 As shown. The casting nozzle platform box is the bearing structure of the entire device, and the automatic adjustment of the casting nozzle platform includes: a lifting adjustment mechanism 3, through which the casting nozzle platform 1 can adjust the height of the casting nozzle platform up and down; a horizontal adjustment mechanism 7, which drives the casting nozzle platform slide plate 5 to move through the slide plate push-pull cylinder 10 to adjust the horizontal position of the casting nozzle platform. The casting nozzle platform steel is made of heat-resistant steel, and the casting nozzle supporting part is made of cast iron.

[0029] The lifting and lowering adjustment mechanism 3 adopts a screw nut transmission module to adjust the height of the casting nozzle. Figure 2As shown in the dotted box, it 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 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 can drive the lifting adjustment screw 17 to rotate, and the lifting adjustment nut 20 is threadedly connected to the lifting screw 17. The lifting adjustment nut 20 is fixedly connected to the lifting adjustment slider 21, and the lifting adjustment slider 21 is slidably mounted on the lifting adjustment slide 19, and the lifting adjustment slider 21 can slide up and down on the lifting adjustment slide. The lifting adjustment slider 21 can be fixedly connected to the casting nozzle platform box 6 by bolts. This allows the casting nozzle platform box 6 and the lifting adjustment slider 21 to slide up and down on the lifting adjustment slide together. The lifting adjustment screw 17 is installed on the upper end of the lifting adjustment slide 19 through a bearing 18, so that the lifting adjustment screw 17 does not move up and down.

[0030] When the lifting adjustment motor 15 is running, its output shaft drives the lifting adjustment screw 17 to rotate through the coupling, thereby causing the lifting adjustment nut 20 threadedly connected thereto to move up and down in the lifting adjustment slide 19. During the up and down movement of the lifting adjustment nut 20, the lifting adjustment slide 21 connected thereto moves up and down together, and the casting nozzle platform box 6 fixedly connected to the lifting adjustment slide 21 also moves up and down together, thereby adjusting the height of the casting nozzle platform.

[0031] Furthermore, in order to enable the 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 nozzle platform box 6. The lifting laser rangefinder 9 measures the distance between itself and the casting and rolling mill frame 2 to feedback and adjust the lifting position of the lifting adjustment mechanism 3, forming a closed-loop control to ensure the accuracy of the nozzle positioning parameters.

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

[0033] For example, the height of the casting nozzle needs to be aligned with the horizontal center line of the casting and rolling between the two rolls, and the distance between the horizontal center line of the casting and rolling and the casting and rolling machine frame 2 changes, then the lifting and adjusting motor 15 is started, driving the lifting and adjusting screw 17 to rotate, thereby making the lifting and adjusting nut 20 threadedly connected thereto drive the casting nozzle platform box 6 to move up and down through the lifting and adjusting slider 21, thereby adjusting the height of the casting nozzle platform to change, and being able to always maintain the same height as the horizontal center line of the casting and rolling. For example, the distance between the horizontal center line of the casting and rolling and the casting and rolling machine frame 2 is 1500mm, then the distance between the casting nozzle 4 and the casting and rolling machine frame 2 should also be 1500mm, minus the distance between the casting nozzle 4 and the lifting laser rangefinder 9 on the casting nozzle platform box 6, which is the distance between the lifting laser rangefinder 9 and the casting and rolling machine frame 2. For example, if the distance between the casting nozzle 4 and the lifting laser distance meter 9 on the casting nozzle platform box 6 is 300mm, then the distance between the lifting laser distance meter 9 and the casting and rolling mill frame 2 should be 1200mm. If the distance between the lifting laser distance meter 9 and the casting and rolling mill frame 2 is 1100mm, the lifting and adjusting motor 15 is started to drive the casting nozzle platform box 6 to rise until the distance between the lifting laser distance meter 9 and the casting and rolling mill frame 2 is 1200mm, and the distance between the casting nozzle 4 and the casting and rolling mill frame 2 is also adjusted to 1500mm. If the distance between the lifting laser distance meter 9 and the casting and rolling mill frame 2 is 1300mm, the lifting and adjusting motor 15 drives the casting nozzle platform box 6 to descend until the distance between the lifting laser distance meter 9 and the casting and rolling mill frame 2 is 1200mm, and the distance between the casting nozzle 4 and the casting and rolling mill frame 2 is also adjusted to 1500mm.

[0034] The nozzle platform slide plate 5 is arranged on the nozzle platform box body 6. Specifically, it is installed in the two side plates of the nozzle platform box body, and will adjust the height along with the nozzle platform box body 6. The nozzle platform slide plate 5 moves in the horizontal direction to adjust the horizontal position of the nozzle 4. The horizontal adjustment mechanism 7 includes the nozzle platform slide plate 5 and the slide plate push-pull cylinder 10, and the nozzle 4 is arranged on the nozzle platform slide plate 5. A horizontally arranged slide plate push-pull cylinder 10 is fixedly connected to the nozzle platform box body 6, and the nozzle platform slide plate 5 is connected to the telescopic rod of the slide plate push-pull cylinder 10. The movement of the nozzle slide plate 5 is achieved by the extension and retraction of the telescopic rod. Specifically, it is possible to quickly switch between the maintenance station a and the working station b.

[0035] Among them, the maintenance station a is a station where the casting nozzle and the front box equipment need to be replaced and maintained, and the working station b is the actual casting nozzle positioning position during the casting and rolling production process. The maintenance station does not need to perform casting and rolling production, and the horizontal position of the casting nozzle can be accurately positioned. When switching to the working station b, it is necessary to be able to accurately position. The horizontal adjustment mechanism 7 also includes a horizontal adjustment motor 11, a horizontal adjustment coupling 12, a horizontal positioning screw regulator 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 elevator 13. The horizontal positioning screw regulator 13 is a screw elevator with a screw horizontally arranged. It is composed of parts such as a worm gear, a screw, and the worm is connected to the horizontal adjustment motor 11 as the input end through the horizontal adjustment coupling 12. The horizontal adjustment motor 11 drives the worm to rotate, and the worm drives the worm wheel to reduce the rotation. The inner cavity of the worm wheel is processed into an internal thread, which is threadedly connected to the screw, thereby driving the screw to move horizontally. The end position of the lead screw can be used as a limit to limit the nozzle platform slide plate 5 being pushed and pulled by the slide plate push-pull cylinder 10, thereby adjusting the actual position of the nozzle platform slide plate 5 being pulled back to the working station b by the slide plate push-pull cylinder 10.

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

[0037] The horizontal laser rangefinder 8 is installed on the casting nozzle platform slide plate 5. By measuring the horizontal distance to the casting and rolling machine frame 2, the horizontal position of the casting nozzle is fed back to the horizontal adjustment motor 11. The horizontal adjustment motor 11 controls its rotation speed, thereby adjusting the extension position of the screw.

[0038] According to the plate thickness (i.e. roll gap width) and cast-rolling production speed (i.e. roll linear speed) set in the production process of the production enterprise, the distance between the casting nozzle and the vertical cast-rolling center line is automatically matched and adjusted according to the feedback size of the horizontal laser rangefinder 8.

[0039] The automatically adjustable casting nozzle table of the present application has a casting and rolling mill with an upper roller fixed and an adjustable lower roller position. The casting and rolling roll gap size is determined according to feedback data of an AGC cylinder for roll gap adjustment installed below the lower roller of the casting and rolling mill, and the casting nozzle is automatically aligned to the roll gap center according to the adjusted roll gap size and the feedback size of the lifting laser distance measurement; the production process of the manufacturer built into the system is automatically matched according to the production line speed and roll gap width control, and the distance between the casting nozzle and the vertical casting and rolling center line is automatically matched and adjusted according to the feedback size of the horizontal laser rangefinder, thereby forming an automatically adjustable casting and rolling forming area range.

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

Claims

1. An automatic adjustment nozzle table, characterized in that: include: The lifting adjustment mechanism includes a screw nut transmission module and a lifting laser distance meter. The screw nut transmission module adjusts the height of the nozzle table box through screw nut transmission. The lifting laser distance meter is installed at the lower part of the nozzle table box. The lifting laser distance meter feeds back the lifting position of the nozzle table box to the screw nut transmission module by measuring the distance between the lifting laser distance meter and the casting and rolling mill frame. The screw-nut transmission module comprises a lifting adjustment motor, a lifting adjustment screw, a lifting adjustment nut, a lifting adjustment slider and a lifting adjustment slider, the output shaft of the lifting adjustment motor is connected to the lifting adjustment screw, the lifting adjustment screw is installed on the upper end of the lifting adjustment slider through 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 installed on the lifting adjustment slider, and the lifting adjustment slider is fixedly connected to the casting nozzle platform box; 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 box body. 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 arranged on the casting nozzle platform box body, the casting nozzle is arranged on the casting nozzle platform slide plate, and the horizontal laser rangefinder is installed on the casting nozzle platform slide plate. By measuring the horizontal distance with the casting and rolling mill frame, the horizontal position of the casting nozzle is fed back to the slide plate push-pull cylinder. The horizontal adjustment mechanism also includes a horizontal adjustment motor and a horizontal positioning spiral adjuster. The horizontal positioning spiral adjuster includes a worm wheel, 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 wheel is threadedly connected to the lead screw. The end position of the lead screw is used as a limit to limit the casting nozzle table slide being pushed and pulled by the slide push-pull cylinder.

2. The automatic adjustment nozzle table according to claim 1, characterized in that: The output shaft of the lifting and adjusting motor is connected with the lifting and adjusting screw rod through a coupling.

3. The automatic adjustment nozzle table according to claim 1, characterized in that: The horizontal adjustment motor is connected to the worm of the horizontal positioning spiral adjuster through a coupling.

4. The automatic adjustment nozzle table according to claim 3, characterized in that: The horizontal positioning screw adjuster is equipped with an encoder, and the encoder is used to detect the number of rotations of the output shaft of the horizontal adjustment motor.

5. The automatic adjustment nozzle table according to claim 1, characterized in that: The slide plate push-pull cylinder pushes the nozzle platform slide plate to switch between the maintenance station and the working station. The maintenance station is a station for maintaining the nozzle and the front box, and the working station is a nozzle positioning position adjusted by the horizontal positioning spiral adjuster during the casting and rolling production process.

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