An automatic middle package quick change mechanism

Abstract

This invention relates to a steel flow control device between the tundish and the crystallizer in the continuous casting area of ​​a steel plant, specifically an automated tundish quick-change mechanism. This invention utilizes a hydraulic cylinder to achieve online replacement of the lower nozzle. The hydraulic cylinder, via a pusher shaft, drives the pusher arm and pusher block to deflect and move horizontally, completing the actions of avoiding the upper nozzle being mounted onto the track pin and then horizontally replacing the old lower nozzle after it has been mounted by a robotic arm. Precise position control is achieved through track grooves, positioning grooves, and positioning heads on the pusher shaft, ensuring that the axes of the upper and lower nozzles coincide after replacement, thus avoiding the problem of short lower nozzle lifespan caused by inaccurate alignment of the lower nozzle with the upper nozzle in the past.

Description

Technical Field

[0001] This invention relates to a steel flow control device between the tundish and the crystallizer in the continuous casting area of ​​a steel plant, specifically an automated tundish quick-change mechanism. Background Technology

[0002] With the rapid development of modern steelmaking and continuous casting technologies, the requirements for billet production processes are becoming increasingly stringent. The protective casting process from the tundish to the crystallizer is of utmost importance in continuous casting. To prevent oxide inclusions in the billet, immersion nozzles are typically used for protective casting.

[0003] Submerged entry nozzle protection casting involves immersing the tap hole of the sprue below the surface of the molten steel in the crystallizer, isolating the steel flow from air and ensuring oxidation-free casting. However, the protective slag on the surface of the molten steel in the crystallizer causes significant damage to the junction between the sprue and the molten steel, making the lifespan of the submerged entry nozzle insufficient for continuous casting.

[0004] The replacement of existing submersible nozzles is mostly done manually. This involves using a clamping tool to move the new nozzle or blind plate to the lower side of the mechanism, and then using a hydraulic cylinder to push the new nozzle or blind plate into the pressure rod assembly to complete the replacement. Existing technology directly pushes it in using the hydraulic cylinder piston rod. Especially when replacing the nozzle, this can easily cause the nozzle axis to deviate from the upper nozzle axis, resulting in severe erosion of the nozzle during steel tapping and a significant reduction in its lifespan. Summary of the Invention

[0005] The technical problem to be solved by this invention is: how to accurately ensure that the newly replaced drain outlet and water inlet are coaxial, and effectively reduce the severe erosion of the drain outlet by molten steel when they are not coaxial.

[0006] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention, which adopts the following technical solution:

[0007] An automated quick-change mechanism for intermediate packages includes a frame body, a hydraulic cylinder, an inlet, and a outlet. The frame body is fixed to the bottom of the intermediate package. A rear sleeve welded component is installed on one side of the frame body. A hydraulic cylinder support is installed at the front end of the rear sleeve welded component. A side opening is provided on the side of the rear sleeve welded component. A push head assembly is movably installed in the side opening. A push head hook and a push head shaft are installed inside the rear sleeve welded component. The push head hook is adapted to connect to the piston rod of the fixed hydraulic cylinder. The push head hook and the push head shaft are rotatably connected. The push head assembly is fixedly installed on the push head shaft.

[0008] An orientation component is installed on the rear welding part. The orientation component is suitable for limiting the deflection angle of the pusher shaft when the pusher assembly moves back and forth along the side opening.

[0009] Preferably, the pusher assembly includes a pusher arm and a pusher block. The pusher arm is mounted on the pusher shaft, and the pusher block is mounted at the end away from the pusher arm. The front and rear sides of the pusher arm are both arc-shaped structural surfaces.

[0010] Preferably, the side opening is a horizontal slot or the front side is obliquely upward and the rear side is horizontal, so that the pusher arm can deflect at a certain angle and move relatively horizontally relative to the side opening during the movement.

[0011] The orientation component includes a positioning block with a receiving groove inside. A spring and a positioning head are installed inside the receiving groove. The end of the positioning head facing away from the spring extends into the rear sleeve welded part. The push head shaft is provided with a track groove and a positioning groove. The track groove and the positioning groove are adapted to fit with the end of the positioning head facing away from the spring. Multiple positioning grooves are provided in the track groove. The positioning grooves are adapted to control the position and deflection angle of the positioning head.

[0012] Preferably, the positioning head is equipped with a pressure sensor, which is suitable for monitoring the change signal of spring force. The mechanism also includes a control module, which is suitable for receiving the pressure signal change collected by the pressure sensor, identifying the position of the push arm and the angle at that position, and controlling the stroke and direction of movement of the cylinder piston rod.

[0013] Preferably, the frame body is provided with mounting holes and cam rotating arms located on the left and right sides of the mounting holes. Water inlet clamping components are installed on the top left and right sides of the mounting holes. The cam rotating arms are horizontally rotatably mounted on the frame body. The cam rotating arms are adapted to press down the water inlet using the water inlet clamping components.

[0014] One end of the cam rotating arm is the operating end and the other end is the action end. The water inlet clamping assembly includes clamping blocks. Two sets of clamping blocks are vertically rotatably installed on the frame body located on the left and right sides of the mounting hole. The end of the clamping block away from the mounting hole is the pressure bearing end. The action end and the pressure bearing end are in corresponding positions and are compatible with each other. The end of the clamping block away from the cam rotating arm is connected to a pressure holding body through a pressure shaft.

[0015] Preferably, the frame body includes a lower body and an upper body, which are fixed together by bolts. The lower body is provided with an installation chamber, and two sets of symmetrically distributed transmission gears are installed in the installation chamber. The transmission gears and the lower side of the cam rotating arm are provided with an arc-shaped rack belt. The upper body is provided with an arc-shaped slot suitable for the rotation of the arc-shaped rack belt. The arc-shaped rack belt is suitable for extending into the installation chamber and meshing with the transmission gears. The center of the arc-shaped rack belt and the arc-shaped slot are arranged to coincide with the projection of the center of the transmission gear on the horizontal plane.

[0016] Two sets of transmission gears form a synchronous transmission through a gear and rack structure, with the gear and rack structure located on top of the transmission gears;

[0017] A drive rack is mounted on the pusher shaft, and the drive rack is adapted to mesh with the transmission gear on the same side;

[0018] The side opening is arranged diagonally upwards and then horizontally. The horizontal length of the side opening is suitable for driving the rack and pinion to drive the cam rotating arm to separate from the clamping block via the transmission gear and the arc rack belt.

[0019] Preferably, the lower front end of the frame is the drain inlet end, and a track pin is installed at this end. The track pin is suitable for placing an emergency blind plate in normal use or a new drain in the case of replacing the drain.

[0020] The lower rear end of the frame is the drain outlet, and a guide block is installed at this end to accommodate the replaced emergency blind flange or drain outlet.

[0021] Preferably, a pressing assembly is provided in the lower middle part of the frame body. The pressing assembly includes multiple compression springs and a pressing head. The compression springs are installed inside the frame body, and the top of the compression springs is adapted to act on the pressing head to push the drain outlet.

[0022] Preferably, a cylinder safety stop suitable for locking / blocking the cylinder is installed on one side of the cylinder support;

[0023] A protective plate is rotatably mounted on the rear sleeve welded part. The protective plate is located on the top of the front side of the side opening, and an inclined surface is provided on the rear side of the protective plate.

[0024] A heat insulation plate is fixed to the bottom of the hydraulic cylinder and the rear sleeve welded parts.

[0025] A method for using an automated quick-change mechanism for packaging, the quick-change steps are as follows:

[0026] A specialized robotic arm rotates two clamping blocks upwards to open the mounting hole. The robotic arm then places the water inlet inside the mounting hole and rotates the two clamping blocks downwards to press them onto the pressure-bearing surface of the water inlet.

[0027] There are four positioning slots inside the track groove, designated as A, B, C, and D respectively;

[0028] At this time, the positioning head is located at point A. The oil cylinder drives the piston rod and push head hook to move the push head shaft horizontally along the track groove until the positioning head is located at point B. The drive rack drives the transmission gear to rotate. The two sets of transmission gears rotate synchronously through the gear rack. The rotation of the transmission gear drives the arc rack belt and cam rotating arm to rotate. The action end of the cam rotating arm acts on the bearing end of the pressing block to press the pressing body on the pressing block down onto the bearing surface of the upper water outlet side.

[0029] The robotic arm places the new drain onto the track pin. At this point, the angle between the pusher arm and the horizontal plane is 20°, and the pusher arm is in an upward-sloping position.

[0030] The piston rod of the hydraulic cylinder drives the pusher shaft to gradually approach the frame body along the track groove. The positioning head moves from point B to point C along the track groove. During the process, the pusher shaft and pusher arm are rotated to a horizontal state relative to the pusher hook.

[0031] Then the pusher shaft and pusher arm gradually approach the frame body in a horizontal state. The positioning head moves from point C to point D along the track groove and the new drain outlet enters the bottom of the frame body along the track pin. When it enters the pressing assembly, the compression spring acts on the pressure bearing surface of the side of the drain outlet.

[0032] Then, the pusher shaft is retracted by the piston rod to the positioning head, which moves from point D along the track groove to point B. When the drain outlet needs to be replaced, the robot arm places the new drain outlet on the track pin, and the pusher shaft is pushed outward by the piston rod to the positioning head, which moves from point B along the track groove to point D, completing the replacement of the new drain outlet. Then, the positioning head is reset to point B, and the steps are repeated to complete the replacement of the new drain outlet or blind flange.

[0033] When the water inlet needs to be replaced, the positioning head changes from resetting to point B to resetting to point A, completing the depressurization of the water inlet. The robotic arm then removes the water inlet and replaces it with a new one.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] This invention utilizes a hydraulic cylinder to achieve online replacement of the drain outlet. The hydraulic cylinder, via a pusher shaft, drives the pusher arm and pusher block to deflect and move horizontally, thus avoiding the action of mounting the drain outlet onto the track pin and horizontally replacing the old drain outlet after it has been mounted by a robotic arm. Precise position control is achieved through track grooves, positioning grooves, and positioning heads on the pusher shaft, ensuring that the axes of the upper and lower drain outlets coincide after replacement, avoiding the problem of short drain outlet lifespan caused by inaccurate alignment of the drain outlet with the upper drain outlet. Four sets of positioning grooves are used to work with pressure sensors to control the hydraulic oil pressure of the hydraulic cylinder, achieving precise piston rod movement. The invention also incorporates transmission gears and arc-shaped rack belts within the frame, allowing the hydraulic cylinder to control the precise deflection angle of the clamping block and the pressure of the clamping block on the upper drain outlet. A compressed air pipeline and two argon gas pipelines are located on the side of the frame; one argon gas pipeline is used to blow argon gas into the upper drain outlet for stirring and to prevent blockage, while the other pipeline is used for argon sealing at the junction of the upper and lower drain outlets to prevent secondary oxidation of the molten steel. The compressed air system effectively cools and protects the main components of the mechanism, improving the reliability of mechanical operation and extending the service life of the parts. Two air inlets are provided on the upper water inlet; one inlet enters the steel outlet channel of the upper water inlet, and the other connects to the annular sealing groove on the lower surface, suitable for supplying argon gas into the annular sealing groove to complete the annular sealing treatment of the contact surface between the upper and lower water inlets. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the overall structure of the unattached oil cylinder, water inlet, and water outlet of the present invention.

[0038] Figure 3 This is a diagram showing the connection relationship between the cylinder support and the rear sleeve welded part of the present invention;

[0039] Figure 4 for Figure 3 Side view of the hydraulic cylinder support and rear sleeve welded parts;

[0040] Figure 5 for Figure 3 A top view of the hydraulic cylinder support and the welded rear sleeve;

[0041] Figure 6 for Figure 5 Cross-sectional view at point AA;

[0042] Figure 7 This is a schematic diagram of the overall structure of the cam rotating arm in this invention;

[0043] Figure 8 This is a schematic diagram of the overall structure of the frame in this invention;

[0044] Figure 9 This is a schematic diagram of the cross-sectional view of the frame body in this invention;

[0045] Figure 10 This is a schematic diagram of the overall structure of the clamping body of the clamping block in this invention;

[0046] Figure 11 This is a schematic diagram of the overall structure of the pusher shaft according to an embodiment of the present invention;

[0047] Figure 12 This is a schematic cross-sectional view of the frame body according to an embodiment of the present invention;

[0048] Figure 13 for Figure 12 Internal structure diagram of the lower and middle main body (only the structure inside the installation compartment is shown);

[0049] Figure 14 for Figure 12 A schematic diagram of the overall structure of the cam rotating arm;

[0050] Figure 15 for Figure 12 Schematic diagram of the overall structure of the pusher shaft;

[0051] Figure 16 for Figure 12 A partial structural diagram of the upper body at the rotating arm of the middle cam;

[0052] Figure 17 This is a front view of the inlet and outlet of the water system after installation in this invention.

[0053] Figure 18 This is a cross-sectional view of the inlet and outlet of the water system after installation in this invention;

[0054] Figure 19 This is a side view of the cylinder support and rear sleeve welded parts according to an embodiment of the present invention.

[0055] In the picture:

[0056] 1. Frame body; 2. Hydraulic cylinder; 3. Rear sleeve welded parts; 4. Hydraulic cylinder support; 5. Side opening; 6. Push head hook; 7. Push head shaft; 8. Push head arm; 9. Push head block; 10. Positioning block; 11. Container slot; 12. Spring; 13. Positioning head; 14. Track groove; 15. Positioning groove; 16. Pressure sensor; 17. Cam rotating arm; 18. Clamping block; 19. Holding body; 20. Lower body; 21. Upper body; 22. Transmission gear; 23. Arc-shaped rack and belt; 24. Drive rack; 25. Track pin; 26. Guide block; 27. Press head; 28. Hydraulic cylinder safety stop; 29. ​​Protective plate; 30. Heat insulation plate; 31. Water inlet; 32. Water outlet; 33. Compression spring. Detailed Implementation

[0057] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0058] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element 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 this invention.

[0059] Example 1, as Figures 1 to 11 As shown, an automated quick-change mechanism for intermediate packages includes a frame body 1, a hydraulic cylinder 2, an upper water inlet 31, and a lower water inlet 32. The frame body 1 is fixed to the bottom of the intermediate package. A rear sleeve welded component 3 is installed on one side of the frame body 1. A hydraulic cylinder support 4 is installed at the front end of the rear sleeve welded component 3. A side opening 5 is provided on the side of the rear sleeve welded component 3. A push head assembly is movably installed in the side opening 5. A push head hook 6 and a push head shaft 7 are installed inside the rear sleeve welded component 3. The push head hook 6 is suitable for connecting and fixing the piston rod of the hydraulic cylinder 2. The push head hook 6 and the push head shaft 7 are rotatably connected. The push head assembly is fixedly installed on the push head shaft 7.

[0060] An orientation component is installed on the rear welding part 3. The orientation component is suitable for limiting the deflection angle of the pusher shaft 7 when the pusher assembly moves back and forth along the side opening 5.

[0061] The pusher assembly includes a pusher arm 8 and a pusher block 9. The pusher arm 8 is mounted on the pusher shaft 7 and the pusher block 9 is mounted on the end away from the pusher arm 8. The front and rear sides of the pusher arm 8 are both arc-shaped structural surfaces.

[0062] Wherein, the side opening 5 is a horizontal slot or the front side is obliquely upward and the rear side is horizontal. When the side opening is horizontal, the width of the side opening 5 needs to meet the condition that the pusher arm 8 deflects upward by 20°. During the movement, the pusher arm 8 is suitable for deflecting a certain angle relative to the side opening 5 and moving relatively horizontally.

[0063] The orientation component includes a positioning block 10, which has a receiving groove 11 inside. A spring 12 and a positioning head 13 are installed inside the receiving groove 11. The end of the positioning head 13 facing away from the spring 12 extends into the rear sleeve welded part 3. A track groove 14 and a positioning groove 15 are provided on the pusher shaft 7. The track groove 14 and the positioning groove 15 are adapted to fit with the end of the positioning head 13 facing away from the spring 12. Multiple positioning grooves 15 are provided within the track groove 14, which are used to control the position and deflection angle of the positioning head 13. There are three positioning grooves 15, designated as points B, C, and D.

[0064] The piston rod of the hydraulic cylinder 2 is connected and fixed to the push head hook 6, which can drive the push head shaft 7 to move back and forth. Since the positioning head 13 is located inside the track groove 14, the push head shaft 7 can drive the push head arm 8 to move closer to and away from the frame body 1, and can perform corresponding deflection and horizontal movement. The deflection is suitable for not interfering with the path when the drain or blind plate is installed by the robot arm, and the horizontal movement is suitable for horizontally pushing the drain or blind plate.

[0065] The following improvements are made based on the above embodiments, such as... Figure 11 As shown, a pressure sensor 16 is provided on the positioning head 13. The pressure sensor 16 is suitable for monitoring the change signal of the spring force of the spring 12. The mechanism also includes a control module, which is suitable for receiving the pressure signal change collected by the pressure sensor 16, identifying the position of the push arm 8 and the angle at that position, and controlling the stroke and direction of the piston rod of the hydraulic cylinder 2. By adding a pressure sensor 16 to the positioning head 13, the corresponding positioning groove 15 can be set as a signal acquisition point. Through the signal acquisition of the signal acquisition point, the position of the drain outlet 31 relative to the inlet 32 ​​can be accurately controlled automatically, ensuring the service life of the drain outlet 32. The control module is integrated into the electrical control system.

[0066] The following improvements are made based on the above embodiments, such as... Figure 2As shown, the frame body 1 is provided with mounting holes and cam rotating arms 17 located on the left and right sides of the mounting holes. The upper water inlet 31 clamping components are installed on the top left and right sides of the mounting holes. The cam rotating arms 17 are horizontally rotatably mounted on the frame body 1. The cam rotating arms 17 are adapted to press down the upper water inlet 31 by acting on the upper water inlet 31 clamping components.

[0067] One end of the cam rotating arm 17 is the operating end, and the other end is the action end. The upper water inlet 31 clamping assembly includes clamping blocks 18. Two sets of clamping blocks 18 are vertically rotatably mounted on the frame body 1 located on the left and right sides of the mounting hole. The end of the clamping block 18 away from the mounting hole is the pressure bearing end. The action end and the pressure bearing end are corresponding and compatible with each other. The end of the clamping block 18 away from the cam rotating arm 17 is connected to a pressure holding body 19 through a pressure shaft. Each end of the pressure holding body 19 has a blind hole. The inlet of the blind hole is threadedly connected to the corresponding argon gas pipeline. The outlet of the blind hole is connected to the corresponding air inlet on the upper water inlet 31. The argon gas pipeline is a flexible hose.

[0068] The cam rotating arm 17 can drive the action end to rotate around its rotation node through the operating end, so as to press the clamping block 18 down. The pressed clamping block 18 will be pressed and fixed to the bearing surface of the upper water inlet 32 ​​by the holding body 19. At the same time, an air inlet is set on the bearing surface of the upper water inlet 31. One air inlet enters the steel outlet channel of the upper water inlet 31 to stir and prevent blockage, and the other connects to the ring sealing groove on the lower surface to supply argon gas into the ring sealing groove, so as to complete the ring sealing treatment of the contact surface between the upper water inlet 31 and the lower water inlet 32 ​​and prevent secondary oxidation of molten steel.

[0069] The following improvements are made based on the above embodiments, such as... Figures 12 to 16 , Figure 19 As shown, the frame 1 includes a lower body 20 and an upper body 21, which are fixed together by bolts. The lower body 20 has an installation chamber, and two sets of symmetrically distributed transmission gears 22 are installed in the installation chamber. An arc-shaped rack belt 23 is provided on the lower side of the cam rotating arm 17. An arc-shaped slot is provided on the upper body 21 to facilitate the rotation of the arc-shaped rack belt 23. The arc-shaped rack belt 23 is adapted to extend into the installation chamber and mesh with the transmission gears 22. The centers of the arc-shaped rack belt 23 and the arc-shaped slot are arranged to coincide with the projection of the center of the transmission gear 22 on the horizontal plane.

[0070] The two sets of transmission gears 22 form a synchronous transmission through a gear and rack structure, and the gear and rack structure is located on top of the transmission gears 22;

[0071] A drive rack 24 is mounted on the pusher shaft 7, and the drive rack 24 is adapted to mesh with the transmission gear 22 on the same side;

[0072] The side opening 5 is arranged obliquely upwards on the front side and then horizontally. The horizontal length of the side opening 5 is suitable for driving the rack 24 to drive the cam rotating arm 17 to separate from the clamping block 18 via the transmission gear 22 and the arc-shaped rack belt 23.

[0073] In this embodiment, the positioning groove 15 is set with four points, namely points A, B, C, and D. By taking points A to B as the horizontal segment, the piston rod of the hydraulic cylinder 2 drives the pusher arm to rotate upward and then moves along the horizontal segment, which drives the drive rack 24 to move horizontally in a straight line. Since the drive rack 24 meshes with the transmission gear 22, it drives the two sets of transmission gears 22, which form a transmission structure through the gear and rack structure, to rotate. This causes the cam rotating arm 17 to rotate around the rotation node, realizing the separation and contact between the working end and the pressure bearing end. This completes the pressing block 18 pressing down or loosening the pressure bearing surface of the water inlet 31, and then cooperates with the robot arm to complete the replacement and automatic pressing of the water inlet 31. No manual intervention is required, and only the hydraulic cylinder 2 and pressure sensor 16 controlled by the control module are needed to realize the automatic and precise position judgment.

[0074] Based on the above embodiments, the following improvements are made, such as... Figure 2 As shown, the lower front end of the frame 1 is the inlet end of the drain 32. A track pin 25 is installed at this end. The track pin 25 is suitable for placing the emergency blind plate in normal use or the new drain 32 when replacing the drain 32. The reason for setting the track pin 25 at the front is that the robot arm will accurately clamp the position of the drain before installing the drain at that position. Therefore, it is only necessary for the track pin 25 to support the drain.

[0075] The lower rear end of the frame 1 is the outlet end of the drain 32. A guide block 26 is installed at this end to accommodate the replaced emergency blind flange or drain 32. The guide block 26 at the outlet end is precisely guided relative to the track pin 25 to ensure that the robot arm accurately grips the replaced old drain. If it is not accurately guided, there is a risk that it may fall off during gripping or ejection.

[0076] The following improvements are made based on the above embodiments, such as... Figure 9 and Figure 12 As shown, a pressing assembly is provided at the lower center of the frame 1. The pressing assembly includes multiple compression springs 33 and a pressing head 27. The compression springs 33 are installed inside the frame 1, and the top of the compression springs 33 is adapted to push the pressing head 27 against the drain outlet 32. When pushed into the pressing assembly, the compression springs 33 will push the pressure surface of the drain outlet 32 ​​upward, ensuring that the upper outlet 31 and the drain outlet 32 ​​are in close contact.

[0077] The following improvements are made based on the above embodiments, such as... Figure 1 and Figure 2As shown, a cylinder safety stop 28 suitable for locking / blocking the cylinder 2 is installed on one side of the cylinder support 4;

[0078] A protective plate 29 is rotatably mounted on the rear sleeve welding part 3. The protective plate 29 is located on the top of the front side of the side opening 5, and an inclined surface is provided on the rear side of the protective plate 29.

[0079] A heat insulation plate 30 is fixed to the bottom of the hydraulic cylinder 2 and the rear sleeve welded part 3.

[0080] A method for using an automated quick-change mechanism for packaging, the quick-change steps are as follows:

[0081] A special robotic arm rotates the two clamping blocks 18 upward to open the mounting hole. The robotic arm then places the water inlet 31 inside the mounting hole and rotates the two clamping blocks 18 downward to press them onto the pressure-bearing surface of the water inlet 31.

[0082] The track groove 14 has four positioning grooves 15, which are designated as A, B, C and D respectively;

[0083] At this time, the positioning head 13 is located at point A. Through the oil cylinder 2, the piston rod and the push head hook 6 drive the push head shaft 7 to move horizontally along the track groove 14 until the positioning head 13 is located at point B. The drive rack 24 drives the transmission gear 22 to rotate. The two sets of transmission gears 22 rotate synchronously through the gear rack. The rotation of the transmission gear 22 drives the arc-shaped rack belt and the cam rotating arm 17 to rotate. The action end of the cam rotating arm 17 acts on the bearing end of the pressing block 18 to press the pressing body 19 on the pressing block 18 down onto the bearing surface of the upper water outlet 31.

[0084] The robotic arm moves the new drain 32 onto the track pin 25. At this time, the angle between the pusher arm 8 and the horizontal plane is 20°, and the pusher arm 8 is in an upward angled state.

[0085] The piston rod of the hydraulic cylinder 2 drives the pusher shaft 7 to gradually approach the frame body 1 along the track groove 14. The positioning head 13 moves from point B to point C along the track groove 14. During the process, the pusher shaft 7 and the pusher arm 8 are rotated to a horizontal state relative to the pusher hook 6.

[0086] Then the pusher shaft 7 and the pusher arm 8 gradually approach the frame body 1 in a horizontal state. The positioning head 13 moves from point C to point D along the track groove 14 and the new drain 32 enters the bottom of the frame body 1 along the track pin 25. When it enters the pressing assembly, the compression spring 33 acts on the pressing head 27 to push the pressure surface on the side of the drain 32.

[0087] Then, the pusher shaft 7 is retracted to the positioning head 13 via the piston rod and moves from point D to point B along the track groove 14. When it is necessary to replace the drain outlet 32, the robot arm places the new drain outlet 32 ​​on the track pin 25. The pusher shaft 7 is pushed outward to the positioning head 13 via the piston rod and moves from point B to point D along the track groove 14, completing the replacement of the new drain outlet 32. Then, it is reset to the positioning head 13 at point B, and the steps are repeated to complete the replacement of the new drain outlet 32 ​​or the blind plate.

[0088] When the inlet 31 needs to be replaced, the positioning head 13 changes from resetting to point B to resetting to point A, thus depressurizing the inlet 31. The robot arm then removes the inlet 31 and replaces it with a new one.

[0089] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. An automatic tundish quick-change mechanism, comprising a frame body (1) and an oil cylinder (2), an upper nozzle (31) and a lower nozzle (32), wherein the frame body (1) is fixed to the bottom of a tundish, characterized in that, A rear sleeve welded part (3) is installed on one side of the frame body (1). A cylinder support (4) is installed at the front end of the rear sleeve welded part (3). A side opening (5) is provided on the side of the rear sleeve welded part (3). A push head assembly is movably installed in the side opening (5). A push head hook (6) and a push head shaft (7) are installed inside the rear sleeve welded part (3). The push head hook (6) is suitable for connecting and fixing the piston rod of the cylinder (2). The push head hook (6) and the push head shaft (7) are rotatably connected. The push head assembly is fixedly installed on the push head shaft (7). An orientation component is installed on the rear welding part (3). The orientation component is suitable for limiting the deflection angle of the pusher shaft (7) when the pusher assembly moves back and forth along the side opening (5). The pusher assembly includes a pusher arm (8) and a pusher block (9). The pusher arm (8) is mounted on the pusher shaft (7) and the pusher block (9) is mounted at one end away from the pusher arm (8). The front and rear sides of the pusher arm (8) are both arc-shaped structural surfaces. The side opening (5) is a horizontal slot or the front side is obliquely upward and the rear side is horizontal. During the movement, the push arm (8) is suitable to deflect at a certain angle and move horizontally relative to the side opening (5). The orientation component includes a positioning block (10), which has a holding groove (11) inside. A spring (12) and a positioning head (13) are installed inside the holding groove (11). The end of the positioning head (13) facing away from the spring (12) extends into the rear sleeve welded part (3). The push head shaft (7) is provided with a track groove (14) and a positioning groove (15). The track groove (14) and the positioning groove (15) are adapted to fit with the end of the positioning head (13) facing away from the spring (12). The track groove (14) is provided with a plurality of positioning grooves (15). The positioning grooves (15) are adapted to control the position and deflection angle of the positioning head (13). The frame body (1) is provided with mounting holes and cam rotating arms (17) located on the left and right sides of the mounting holes. The top left and right sides of the mounting holes are equipped with water inlet (31) clamping components. The cam rotating arms (17) are horizontally rotated and installed on the frame body (1). The cam rotating arms (17) are suitable for acting as water inlet (31) clamping components to press down on the water inlet (31). The push head shaft (7) can drive the cam rotating arms (17) to rotate. One end of the cam rotating arm (17) is the operating end and the other end is the action end. The upper water inlet (31) clamping assembly includes clamping blocks (18). Two sets of clamping blocks (18) are vertically rotated and installed on the frame body (1) located on the left and right sides of the mounting hole. The end of the clamping block (18) away from the mounting hole is the pressure bearing end. The action end and the pressure bearing end are in corresponding positions and are compatible with each other. The end of the clamping block (18) away from the cam rotating arm (17) is connected to the pressure holding body (19) through the pressure shaft. The lower front end of the frame (1) is the inlet end of the drain (32), and a track pin (25) is installed at this end. The track pin (25) is suitable for placing the emergency blind plate in normal use or the new drain (32) in the state of replacing the drain (32). The lower rear end of the frame (1) is the outlet end of the drain (32), and a guide block (26) is installed at this end to accommodate the replaced emergency blind plate or drain (32). When the pusher shaft (7) drives the pusher arm (8) to move closer to and further away from the frame body (1), it can deflect and move horizontally. The deflection is suitable for not interfering with the path when the drain or blind plate is installed by the robot arm, and the horizontal movement is suitable for horizontally pushing the drain or blind plate.

2. The automated center pack quick change mechanism of claim 1, wherein, The positioning head (13) is equipped with a pressure sensor (16), which is suitable for monitoring the change signal of the elastic force of the spring (12). The mechanism also includes a control module, which is suitable for receiving the pressure signal change collected by the pressure sensor (16), identifying the position of the push arm (8) and the angle at that position, and controlling the stroke and direction of the piston rod of the oil cylinder (2).

3. An automated center pack quick change mechanism according to claim 2, wherein, The frame (1) includes a lower body (20) and an upper body (21). The upper body (21) and the lower body (20) are fixed by bolts. An installation chamber is provided inside the lower body (20). Two sets of symmetrically distributed transmission gears (22) are installed inside the installation chamber. An arc-shaped rack belt (23) is provided on the lower side of the cam rotating arm (17). An arc-shaped slot suitable for the rotation of the arc-shaped rack belt (23) is provided on the upper body (21). The arc-shaped rack belt (23) is suitable for extending into the installation chamber and meshing with the transmission gears (22). The center of the arc-shaped rack belt (23) and the arc-shaped slot are arranged to coincide with the projection of the center of the transmission gear (22) on the horizontal plane. Two sets of transmission gears (22) form a synchronous transmission through a gear rack structure, and the gear rack structure is located on top of the transmission gears (22); A drive rack (24) is mounted on the pusher shaft (7), and the drive rack (24) is adapted to mesh with the transmission gear (22) on the same side; The side opening (5) is arranged obliquely upwards on the front side and then horizontally. The horizontal length of the side opening (5) is suitable for driving the rack (24) to drive the cam rotating arm (17) to separate from the clamping block (18) via the transmission gear (22) and the arc rack belt.

4. The automated quick-change mechanism for intermediate packaging according to claim 3, characterized in that, A pressing assembly is provided in the lower middle part of the frame body (1). The pressing assembly includes multiple compression springs (33) and a pressing head (27). The compression springs (33) are installed inside the frame body (1). The top of the compression springs (33) is adapted to act on the pressing head (27) to push the drain outlet (32).

5. The automated quick-change mechanism for intermediate packaging according to claim 1, characterized in that, A cylinder safety stop (28) suitable for locking / blocking the cylinder (2) is installed on one side of the cylinder support (4). A protective plate (29) is rotatably mounted on the rear welding part (3). The protective plate (29) is located on the top of the front side of the side opening (5), and an inclined surface is provided on the rear side of the protective plate (29). A heat insulation plate (30) is fixed to the bottom of the oil cylinder (2) and the rear sleeve welded part (3).

6. A method of using an automated center pack quick change mechanism, characterized by, The automated quick-change mechanism for intermediate packaging as described in claim 4 is adopted; The quick-change steps are as follows: The special robotic arm rotates the two clamping blocks (18) upward to open the mounting hole, and then places the water inlet (31) inside the mounting hole through the robotic arm. Then, the two clamping blocks (18) are rotated downward to press against the pressure bearing surface of the water inlet (31). The positioning slots (15) inside the track groove (14) are four in number, namely A, B, C and D; At this time, the positioning head (13) is located at point A. Through the oil cylinder (2), the piston rod and the push head hook (6) drive the push head shaft (7) to move horizontally along the track groove (14) until the positioning head (13) is located at point B. The drive rack (24) drives the transmission gear (22) to rotate. The two sets of transmission gears (22) rotate synchronously through the gear rack. The rotation of the transmission gear (22) drives the arc rack belt and the cam rotating arm (17) to rotate. The action end of the cam rotating arm (17) acts on the pressure end of the pressing block (18) to press the pressure holding body (19) on the pressing block (18) down onto the pressure surface of the upper water outlet (31). The robotic arm places the new drain (32) onto the track pin (25). At this time, the angle between the pusher arm (8) and the horizontal plane is 20°, and the pusher arm (8) is in an upward angle. The piston rod of the oil cylinder (2) drives the pusher shaft (7) to gradually approach the frame body (1) along the track groove (14). The positioning head (13) moves from point B to point C along the track groove (14). During the process, the pusher shaft (7) and the pusher arm (8) are rotated to a horizontal state relative to the pusher hook (6). Then the pusher shaft (7) and the pusher arm (8) approach the frame body (1) together in a horizontal state. The positioning head (13) moves from point C to point D along the track groove (14) and pushes the new drain (32) into the bottom of the frame body (1) along the track pin (25). When it enters the pressing assembly, the compression spring (33) acts on the pressure head (27) to push the pressure surface on the side of the drain (32). Then, the pusher shaft (7) is retracted to the positioning head (13) via the piston rod and moves from point D to point B along the track groove (14). When it is necessary to replace the drain outlet (32), the robot arm places the new drain outlet (32) on the track pin (25). The pusher shaft (7) is pushed outward to the positioning head (13) via the piston rod and moves from point B to point D along the track groove (14), completing the replacement action of the new drain outlet (32). Then, it is reset to the positioning head (13) at point B, and the steps are repeated to complete the replacement action of the new drain outlet (32) or blind plate. When it is necessary to replace the water inlet (31), the positioning head (13) is reset from point B to point A, and the water inlet (31) is depressurized. The robot arm can then remove the water inlet (31) and replace it with a new one.

Images