WO2005087409A1

WO2005087409A1 - Sliding nozzle device and pouring device

Info

Publication number: WO2005087409A1
Application number: PCT/JP2005/004447
Authority: WO
Inventors: Tsuneo Kondo; Hideto Takasugi; Mitsuo Umemura; Yoshinobu Kawai; Tomohiro Yotabun; Hisamori Ikeda; Hisao Inubushi
Original assignee: Jfe Engineering Corporation; Nippon Rotary Nozzle Co., Ltd.; Tyk Corporation; Jfe Mechanical Co., Ltd.
Priority date: 2004-03-16
Filing date: 2005-03-14
Publication date: 2005-09-22
Also published as: EP1726384A1; JP2005262238A; US20080272157A1; EP1726384A4; CA2559930A1

Abstract

A fixed plate (15) is provided on a fixed metallic frame (14). An opening/closing metallic frame (17) having a movable plate (21) is movably/closably installed on the fixed metallic frame (14). A pressurizing mechanism (23) is installed on the fixed metallic frame (14) and applies pressing force in a closing direction produced by a spring (25) to the opening/closing metallic frame (17) in a closed state. An operation member (29) is movably installed at a position opposite the pressurizing mechanism (23). Cam surfaces (30d, 32a) are arranged between the operation member (29) and the pressurizing mechanism (23). When the opening/closing metallic frame (17) is being closed, the spring (25) is subjected to effect of the cam surfaces (30d, 32a) caused by the movement of the operation member (29) and deformed by its urging force, and as a result, a pressing force to the opening/closing metallic frame (17) is reinforced.

Description

Specification

Sliding nozzle device and pouring device

Technical field

[0001] The present invention is, for example, attached to a molten metal container such as a ladle used in a continuous production line, and is used for controlling a pouring amount when pouring a molten metal from a molten metal container to a molding die. The present invention relates to a sliding nozzle device and a pouring device provided with the sliding nozzle device.

Background art

[0002] A sliding plate of this type is provided with a fixed plate fixed to a molten metal container such as a ladle and a movable plate opposed to the fixed plate, and a fixed nozzle force movable on the fixed plate. A movable nozzle is provided on each of the plates. Then, at the time of replacement or maintenance of the nozzle or the like, the movable plate is rotated, and the movable plate and the movable nozzle are separated from the fixed plate and the fixed nozzle force. In addition, at the time of pouring, the movable plate and the movable nozzle are slid in a state of being pressed against the fixed plate and the fixed nozzle, and the opening amount between the fixed nozzle and the movable nozzle is adjusted.

[0003] In the apparatus of Patent Document 1, the movable plate is pressed against the fixed plate by a toggle mechanism, and the movable plate is slid by a cylinder. The switching of the toggle mechanism between the active state and the inactive state is manually operated. For this reason, the switching work of the toggle mechanism had to be carried out under difficult conditions in a high-temperature environment.

[0004] To solve this, a sliding nozzle device described in Patent Document 2 has been proposed. In the configuration of Patent Literature 2, both functions of pressing and releasing the movable plate against the fixed plate and releasing the movable plate and sliding the movable plate are achieved by the hydraulic cylinder.

[0005] That is, in Patent Document 2, a notch is provided between the opening and closing metal frame and the fixed metal frame. With this cutting structure, the state can be switched between a state in which the relative movement of the opening / closing frame with respect to the fixed frame along the rotation axis direction is prevented and a state in which the relative movement is permitted. [0006] Then, in a state in which the movement of the opening and closing metal frame is prevented by the switching of the cutting structure, a toggle mechanism in the switching mechanism is in an operating state. In this state, when the hydraulic cylinder is operated, only the sliding frame within the opening / closing frame is moved to open / close the nozzle hole and change the degree of matching between the movable nozzle and the fixed nozzle. On the other hand, when the hydraulic cylinder is operated in a state where the relative movement of the opening / closing frame is allowed, the sliding metal frame and the opening / closing frame are integrally moved. By this movement, the action of the toggle mechanism in the cutting structure is released, and the pressing member is released from the engaging portion. As a result, the pressing of the opening / closing frame by the coil panel toward the plate side is released.

Patent Document 1: JP-A-63-212064

Patent Document 2: JP-A-6-226430

Disclosure of the invention

[0007] However, the sliding device described in Patent Document 2 has a configuration in which the cutout structure is arranged in a narrow space between the fixed metal frame and the opening / closing metal frame, and in addition to the cutout structure. In this, a toggle mechanism having a complicated configuration including a spring is installed, and members constituting the toggle mechanism perform complicated operations. For this reason, the switching mechanism of the sliding device described in Patent Literature 2 has not been put to practical use until the present time when the operation reliability is poor.

[0008] The present invention has been made by focusing on the problems existing in such conventional techniques. It is an object of the present invention to provide a sliding nozzle device and a pouring device that can reliably apply or release a pressing pressure to an opening / closing frame with a simple configuration.

[0009] To achieve the above object, according to a first aspect of the present invention, there is provided a fixing metal frame having a fixing plate in which a fixing nozzle hole is formed, the fixing metal frame being capable of being attached to a molten metal container. An opening / closing frame that is slidable in a state of being superimposed on the fixed plate and has a movable nozzle hole formed with a movable nozzle hole corresponding to the fixed nozzle hole, and that can be opened and closed with respect to the fixed metal frame; Pressurizing means provided on the metal frame for applying a pressing force to the closed metal frame in a closing direction by a panel, wherein the movable plate is slid in the closed state of the metal frame. In a sliding nozzle device in which a passage between the two nozzle holes is opened and closed, between the pressurizing means and the opening and closing metal frame, An actuating member having a cam surface is provided, and in the closed state of the opening and closing metal frame, the panel is deformed against the urging force by the action of the cam surface accompanying the actuation of the actuating member, and the pressing force is strengthened. Like! /

In this case, the panel is deformed against the urging force by the action of the cam surface accompanying the movement of the operating member, and the pressing force on the opening / closing frame is strengthened. This eliminates the need for a toggle mechanism, simplifies the structure, and ensures that pressure is applied to or released from the opening / closing frame.

[0011] The pressurizing means is rotatably supported by a fixed metal frame and rotatably supported by the rotatable member, and holds the opening and closing metal frame as the rotatable member rotates. It is desirable that a holding member movable between a position and a position separating therefrom be provided, and the panel be provided between the rotating member and the holding member.

[0012] In this case, by rotating the rotating member in a state where the pressing force on the opening / closing frame is weakened, the holding member is moved to a position where the holding force for holding the opening / closing frame is separated, and the opening / closing is performed. The metal frame can be easily opened with a fixed metal frame.

[0013] The operating member is disposed between the opening / closing metal frame and the holding member, and the operating member receives a reaction force of the panel by deforming the panel against its elasticity by the action of a cam. It is desirable that the reaction force acts as a force in the closing direction of the opening and closing metal frame.

[0014] In this case, the opening and closing metal frame can be reliably held at the closed position via the operating member by utilizing the reaction force accompanying the elastic deformation of the panel.

A moving member disposed between the opening / closing frame and the holding member so as to be movable in the same direction as the moving direction of the holding member; and a moving member disposed between the moving member and the opening / closing frame. By moving the moving member in a direction against the elasticity of the panel by the action of the cam surface, it is desirable that the cam member presses the opening / closing frame in the closing direction by receiving the reaction force of the panel.

[0015] In this case, since the operating member is composed of two parts, the moving member and the cam member, the structure of the operating member is simple, and the movement of the moving member constituting the operating member causes the moving member to move through the cam member. The pressure applied to the opening / closing frame can be reliably reduced.

[0016] The cam member moves integrally with the movable plate, thereby opening and closing by a cam action. It is desirable to provide a switching means for switching the cam member between a state where it is arranged at a position where the metal frame is pressed and a position where the pressure is released and a state where the cam member is fixed to the opening / closing frame at the pressure position.

In this case, by switching the cam member between a state in which the cam member is moved integrally with the movable plate and a state in which the cam member is fixed to the opening / closing frame, control for increasing / decreasing the pressure applied to the opening / closing frame is achieved, Can be easily selectively set and executed.

[0018] According to a second aspect of the present invention, there is provided a pouring device including the above-described sliding nozzle device and a driving device for sliding the movable plate.

In this case, one driving device can control the pressure applied to the opening / closing frame and open / close the passage between the nozzle holes.

Brief Description of Drawings

FIG. 1 (a) is a simplified diagram schematically showing a main part of the embodiment, (b) is a cross-sectional view showing a pressurized state, and (c) is a cross-sectional view showing a pressurized release state .

FIG. 2 is a front view showing a pouring device provided with the sliding nozzle device of the embodiment.

FIG. 3 is a front view showing a mechanism moved by a hydraulic cylinder, a cam member, and related mechanisms.

FIG. 4 is a side view of the pouring device of FIG. 2.

FIG. 5 is an enlarged side view mainly showing a pressing mechanism.

FIG. 6 is a plan view of the pouring device of FIG. 2.

FIG. 7 is a cross-sectional view showing a mechanism that is slid along with a sliding metal frame by a hydraulic cylinder.

FIG. 8 is a sectional view taken along line 8-8 in FIG. 2.

FIG. 9 is a cross-sectional view mainly showing a cam member and its related mechanism.

FIG. 10 is a sectional view taken along line 10-10 in FIG. 2.

FIG. 11 is an enlarged partial cross-sectional view corresponding to FIG. 10 and showing a part of FIG. 6;

BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described below with reference to the drawings.

(Overall schematic configuration)

As shown in Fig. 2-Fig. 4, Fig. 6 and Fig. 10, the outer surface of The wing nozzle device 12 is installed. A hydraulic cylinder 13 as a driving device is disposed at a position separated from the sliding nozzle device 12, and the hydraulic cylinder 13 and the sliding nozzle device 12 constitute a pouring device according to this embodiment. The nozzle portion of the sliding nozzle device 12 is opened and closed by the hydraulic cylinder 13 and the pouring amount is adjusted. That is, as is clear from FIG. 10, the molten metal in the molten metal container 11 is poured into the mold or the like via the sliding nozzle device 12 in a state where the sliding nozzle device 12 is arranged downward. Tepuru.

(Schematic of main part of embodiment)

Therefore, the configuration of the sliding nozzle device 12 will be described below. First, FIG. 1A is a schematic diagram showing the operation of this embodiment, and FIGS. 1B and 1C are also simplified cross-sectional views. As shown in FIGS. 1A to 1C, a guide member 31 is provided on an opening / closing metal frame 17 that can be opened and closed with respect to the fixed metal frame 14, and the pressed surface 3la is formed on the guide member 31. Have been. The cam member 32 is arranged corresponding to the pressed surface 31a. The panel force of the coil panel 25 of the pressing mechanism 23 constituting the pressing means acts on the cam surface 32a of the cam member 32 via the moving member 30 and the holding member 27.

Then, as shown in FIG. 1 (b), when the fixing pin 43 is inserted into the engagement hole 32b of the cam member 32 and the cam member 32 is held at the upper position in FIG. The compression force acts on the coil panel 25 via the moving member 30 and the holding member 27 by the action of the cam surface 32a of the 32 and the cam surface 30d of the moving member 30, and the compression reaction force is applied to the cam member 32 and the guide portion. It acts on the opening and closing metal frame 17 via the pressed surface 31a of the material 31. Therefore, the opening and closing metal frame 17 is pressed against the fixed metal frame 14 under a required pressing force. Further, as shown in FIG. 1 (c), the fixing pin 43 is disengaged from the engagement hole 32b, and the upper and lower ends of the cam member 32 are also clamped by the switching member 40 and the engagement projection 37a. When the cam surface 32a, 30d is lowered with the lowering of the engaging projection 37a, the action of the cam surfaces 32a, 30d is released, and the press-contact state of the opening / closing frame 17 against the fixed metal frame 14 is released.

(Fixed Metal Frame 14, Opening / Closed Metal Frame 17 and Their Related Configurations)

Next, the configuration of the sliding nozzle device 12 will be described in detail. First, the fixed metal frame 14, the opening / closing metal frame 17 and their related configurations will be described. Figure 2—Figure 4 and As shown in FIG. 6, a fixing metal frame 14 is attached and fixed to the outer surface of the molten metal container 11, and a pair of attaching portions 14a having through holes 14b is provided on both sides thereof. As shown in FIG. 10, a fixing plate 15 is detachably attached to the center of the fixing metal frame 14, and a fixing nozzle hole 15a is formed at the center thereof. An inner nozzle tube 16 is attached to the inner surface of the fixing plate 15 as necessary, and the inner nozzle tube 16 projects into the molten metal container 11.

An opening / closing metal frame 17 is attached to the outer surface of the fixed metal frame 14 so as to be openable and closable. That is, a pair of support portions 17a having through holes 17b are provided on both sides of the opening and closing metal frame 17 so as to correspond to the respective mounting portions 14a of the fixed metal frame 14. By passing the support pins 18 through the through holes 17b, 14b of the support portion 17a and the mounting portion 14a on one side of both metal frames 14, 17, the opening / closing metal frame 17 is centered on the support pins. 6, and is openably and closably mounted between a closed position indicated by a solid line in FIG. 6 and an open position on one side indicated by a two-dot chain line.

[0025] If necessary, if the support pins 18 are passed through the through holes 17b, 14b of the support portion 17a and the mounting portion 14a located on the other side of the two metal frames 14, 17, the open / close metal frame is opened. 17 can be opened and closed between the closed position and the open position on the other side.

As shown in FIG. 2, FIG. 7 and FIG. 9, a sliding metal frame 19 is slidably disposed in the opening / closing metal frame 17 in a vertically slidable manner in FIG. The piston rod 13a of the hydraulic cylinder 13 is connected via a fitting 20. A movable plate 21 is detachably mounted at the center of the sliding metal frame 19, and a movable nozzle hole 21a corresponding to the fixed nozzle hole 15a is formed at the center thereof. An outer nozzle cylinder 22 is attached to the outer surface of the movable plate 21 as needed, and projects outside the opening / closing frame 17.

Then, in a state where the opening and closing metal frame 17 is arranged at the closed position, the movable plate 21 is arranged so as to overlap the fixed plate 15. In this state, the movable plate 21 is slid by the hydraulic cylinder 13 in the vertical direction in FIGS. 2 and 9 together with the sliding metal frame 19, so that the nozzle holes 15a and 21a of the plates 15 and 21 are aligned. Is changed to open and close the passage between the nozzle holes 15a and 21a, and the opening amount of the passage is adjusted. (Pressure Mechanism 23 and Related Configurations)

As shown in FIG. 2 to FIG. 5, FIG. 8, FIG. 10 and FIG. 11, on both sides of the fixed metal frame 14, a pressing mechanism 23 as a pressing means is disposed between each pair of mounting portions 14a. ing. Then, in a state where the opening / closing frame 17 is disposed at the closed position shown by the solid line in FIG. 6, the pressing mechanism 23 applies a pressure to the opening / closing frame 17 in the closing direction. Has become.

That is, between the mounting portions 14a on both sides of the fixed metal frame 14, substantially box-shaped rotating members 24 constituting a pair of spring cases are rotatably supported by support shaft portions 24a at both ends. ing . As shown in FIGS. 4 and 5, a plurality of housing portions 24b are defined inside the rotating member 24, and a plurality of coil panels 25 are housed and arranged in these housing portions 24b. A lid 26 is fitted into the opening of the rotating member 24 so as to be movable in the axial direction of the coil panel 25, and the end of each coil panel 25 is in contact with the inner surface of the lid 26.

[0030] A holding member 27 having a holding portion 27a and a pair of rod portions 27b is supported by the respective rotating members 24 and lid 26 so as to be able to advance and retreat in the axial direction of the coil panel 25 at the rod portions 27b. ing. A nut 28 is screwed into a distal end thread portion of each rod portion 27b of the holding member 27, and is joined to the outer surface of the lid 26. Thus, the biasing force of each coil panel 25 always acts on the holding member 27 via the lid 26 and the nut 28 in the direction in which the holding member 27 approaches the rotating member 24. Further, as shown in FIGS. 10 and 11, when the rotating member 24 is rotated around the support shaft portion 24a, the holding member 27 holds the opening / closing frame 17 via the operating member 29 described later. It is arranged to be moved to a position and a position separated therefrom.

(Cam Member and Related Configurations)

As shown in FIG. 2 to FIG. 5 and FIG. 10, a pair of operating members 29 are disposed on both sides of the opening / closing frame 17 in correspondence with the respective pressure mechanisms 23. Then, in the closed state of the opening / closing frame 17, due to the action of cam surfaces 30d and 32a described later provided between the operating member 29 and the pressing mechanism 23, the operating member 29 is moved downward in FIG. Then, the coil panel 25 of the pressurizing mechanism 23 is deformed against the urging force, and the pressing force on the opening / closing frame 17 is strengthened.

That is, the operating member 29 is provided on both sides of the opening and closing metal frame 17 via a pair of guide members 31. A moving member 30 disposed so as to be movable in the same direction as the moving direction of the holding member 27 of the pressure mechanism 23, and a moving direction of the moving member 30 between the moving member 30 and the opening / closing frame 17. And a cam member 32 movably arranged in a direction perpendicular to the direction. As shown in FIGS. 1 and 8, the cam member 32 is received by a pressed surface 31a formed on one side surface of the guide members 31. A long hole 30a is formed on the inner surface of the moving member 30, and the head of a regulating screw 33 protruding from the side surface of the opening / closing frame 17 is engaged with the long hole 30a, so that the moving range of the moving member 30 is increased. Is set. An engaging protrusion 30b is provided on the outside of the moving member 30 to protrude therefrom. The holding portion 27a of the holding member 27 is engaged with the engaging protrusion 30b in a state where the holding member 27 of the pressing mechanism 23 is disposed at the holding position. It has come to cope with possible cases.

As shown in FIGS. 10 and 11, a concave groove 30 c is formed on the inner surface of the moving member 30 in a direction perpendicular to the moving direction of the moving member 30, that is, in the same direction as the sliding direction of the sliding metal frame 19. The inclined cam surface 30d is formed on the inner surface of one side of the concave groove 30c. The cam member 32 is movably inserted into the concave groove 30c of the moving member 30, and one side outer surface of the cam member 32 is slidably engaged with the inclined cam surface 30d of the concave groove 30c. A mating inclined cam surface 32a is formed.

When the cam member 32 is moved from the position indicated by the two-dot chain line to the position indicated by the solid line in FIG. 8, the moving member 30 is moved by the action of the inclined cam surfaces 32a and 30d. The coil panel 25 is moved in a direction against the elasticity of the coil panel 25 (to the right in FIG. 8, and downward in FIG. 7). As a result, as shown in FIGS. 1A to 1C, the coil panel 25 of the rotating member 24 is compressed and deformed against the urging force via the holding member 27, and the coil panel 25 is rotated. Is applied to the opening / closing frame 17 as a force in the closing direction via the moving member 30 and the cam member 32!

On the other hand, when the cam member 32 is moved from the position indicated by the solid line in FIG. 8 to the position indicated by the two-dot chain line, the action of the inclined cam surfaces 32a and 30d causes the moving member 30 to move in the above case. Conversely, the coil panel 25 is moved in the biasing direction. As a result, the engagement protrusion 30b of the moving member 30 is separated from the holding portion 27a of the holding member 27 of the pressing mechanism 23, and the pressing force of the opening / closing frame 17 in the closing direction is released. /

As shown in FIGS. 2, 4, and 5, the holding portion 27a of the holding member 27 of the pressing mechanism 23 Correspondingly, a regulating member 34 is rotatably supported on the outer surface of each moving member 30 via a support shaft 35, and an engagement hole 34a is formed at the tip thereof. An engagement pin 36 projects from the outer surface of the moving member 30 and is engaged with an engagement hole 34a of the regulating member 34. Then, as shown by a solid line in FIG. 5, by the engagement between the one end of the engagement hole 34a and the engagement pin 36, the regulating member 34

In the state where the holding member 27 is located at the restriction position corresponding to 7a, the rotation operation of the holding member 27 from the holding position to the opening / closing frame 17 shown in FIG. 10 to the separated position shown in FIG. 11 is restricted. In addition, as shown by the two-dot chain line in FIG. When it is disposed, the rotation operation of the holding member 27 from the holding position to the opening / closing frame 17 shown in FIG. 10 to the separated position shown in FIG. 11 is allowed!

As shown in FIG. 2, FIG. 3, FIG. 7, and FIG. 9, an interlocking frame is provided on the outer surface of the sliding metal frame 19 so as to be located between the two cam members 32 outside the opening / closing metal frame 17. 37 is integrally connected to the sliding metal frame 19 via a connecting cylinder 38. Therefore, the interlocking frame 37 slides together with the sliding metal frame 19. Between the interlocking frame 37 and the two cam members 32, a notch 39 as a switching means is provided. The cutting mechanism 39 fixes the two cam members 32 to the interlocking frame 37 and slides the cam members 32 together with the interlocking frame 37 and the sliding metal frame 19 in the vertical direction in FIG. It can be switched to the state fixed to the opening / closing frame 17 regardless of the sliding of the sliding frame 19. A long hole 17c through which the connecting tube 38 passes is provided in the center of the opening and closing metal frame 17.

That is, a pair of engagement projections 37 a capable of supporting the lower ends of both cam members 32 are formed on both lower ends of the interlocking frame 37. A switching member 40 is mounted on both upper ends of the interlocking frame 37 via a rotating shaft 41 so as to be rotatable between two positions, and is held at the two positions by a plunger 42. Then, as shown in FIGS. 1 (c) and 2-4, when the switching member 40 is switched to the engagement position protruding above the two cam members 32, the two cam members 32 are moved to the interlocking frame 37. It is supported in a sandwiched state between the engagement projection 37a and the switching member 40. In this state, the sliding metal frame 19 is slid by the hydraulic cylinder 13, so that the two cam members 32 are integrally formed with the sliding metal frame 19 and the interlocking frame 37 in the solid line position in FIG. And 2 points The slide mechanism is slid between the dashed line positions to apply or release the pressing force to the opening / closing frame 17 by the pressing mechanism 23. On the other hand, as shown in FIG. 1B, when the switching member 40 is switched to the retracted position where the upward force of both cam members 32 is also retracted, only the sliding metal frame 19 related to the cam member 32 is rotated. Is slid downward in FIG. 1B so that the degree of alignment between the nozzle hole 15a of the fixed plate 15 and the nozzle hole 21a of the movable plate 21 is changed.

[0039] An engagement hole 32b is formed at an upper end of each of the cam members 32. A pair of fixing pins 43 are provided on the support portions 17a on both sides of the opening and closing metal frame 17 so as to be able to be disengaged from the engagement holes 32b, and are protruded and retracted by a fixing plunger 44. In this case, they are held sexually. Then, as shown in FIGS. 1 (b) and 2, when this fixing pin 43 enters the engaging hole 32b of the cam member 32 and projects to a position where it engages with the engaging hole 32b, The cam member 32 is fixed to the opening / closing frame 17 so as not to slide, and is held in that state. Therefore, the cam member 32 is moved in the vertical direction in FIG. On the other hand, when the fixing pin 43 is immersed in a position where it is disengaged from the engagement hole 32b of the cam member 32, the movement of the two cam members 32 with respect to the opening / closing frame 17 in the vertical direction of FIG. It's been done! /

In FIGS. 1 (a) and 1 (b), the lower end of the back surface of the cam member 32 that contacts the pressed surface 31a of the guide member 31, and the upper and lower ends of the pressed surface 3la are positioned with respect to the guide member 31. The cam member 32 is formed in an arc shape so as to relieve concentrated stress when the cam member 32 is pressed.

(Operation of the Embodiment)

Next, the operation of the sliding nozzle device 12 configured as described above will be described. During normal use of the sliding nozzle device 12, as shown in FIGS. 6 and 7, the opening / closing metal frame 17 is disposed at a closed position with respect to the fixed metal frame 14, and the holding member 27 of the pressurizing mechanism 23 is opened and closed. It is pivotally disposed at a holding position with respect to the frame 17. In this state, as shown by a two-dot chain line in FIG. 4, the sliding metal frame 19 is moved to the lower side in FIG. 4, and the passage between the nozzle holes 15a and 21a of both plates 15, 21 is closed. . As shown by the solid line in FIG. 8, the force member 32 is moved to one end (the upper end in FIG. 8) of the movement range, and the fixing pin 43 is engaged with the engagement hole 32b, whereby It is fixed to the opening / closing frame 17. Further, as shown by the solid lines in FIGS. 1B and 2, the switching member 40 is switched to the retracted position where it is retracted from above the cam member 32. 4 and 5, the regulating member 34 is pivotally disposed at the regulating position corresponding to the holding portion 27a of the holding member 27, and the holding position force of the holding member 27 is also rotated to the separated position. Movement operation is regulated. Therefore, as is clear from FIGS. 4 and 5, in this state, the coil panel 25 of the pressurizing mechanism 23 is compressed and deformed by the action of the cam surfaces 32a and 30d of the cam member 32 and the moving member 30, and the reaction force moves. The opening / closing frame 17 is provided to the opening / closing frame 17 via the member 30, the cam member 32, and the guide member 31, and the opening / closing frame 17 is pressed and held at the closed position.

In this state, as shown in FIG. 7, when the hydraulic cylinder 13 is retracted and operated with the sliding nozzle device 12 facing downward and facing a molding or the like, as shown in FIG. 2 together with the frame 19, the degree of alignment between the nozzle hole 15a of the fixed plate 15 and the nozzle hole 21a of the movable plate 21 is changed. As a result, the passage between the nozzle holes 15a and 21a is opened with an opening amount corresponding to the moving amount of the movable plate 21, and the molten metal in the molten metal container 11 is poured into a mold or the like through the passage. You. Thereafter, when the hydraulic cylinder 13 is operated to protrude, the movable plate 21 is slid from the position shown in FIG. The passage between the 21 nozzle holes 15a and 21a is closed. Incidentally, FIG. 7 shows, by solid lines, parts that slide together with the sliding metal frame 19. By closing the passage, pouring of the molten metal from inside the molten metal container 11 is stopped. In this case, since the cam member 32 is held on the opening / closing frame 17 by the fixing pin 43, the cam member 32 is held at a fixed position without moving.

Next, when the opening / closing metal frame 17 is opened to clean the molten metal adhered to the nozzle holes 15a, 21a of the fixed plate 15 and the movable plate 21, or when the plates 15, 21 are replaced. The operation of is described. In this case, as shown in FIG. 2 and FIG. 4, when the sliding nozzle device 12 is set up and the nozzles are arranged sideways, and the hydraulic cylinder 13 is retracted, the movable plate 21 slides together with the sliding metal frame 19. Then, as shown in FIGS. 7, 10, and 11, the passage between the nozzle holes 15a, 21a of the plates 15, 21 is fully opened.

In this state, the fixing pin 43 is disengaged from the engaging hole 32b of the cam member 32 by the operator. Also, the force of the cam member 32 fixed to the opening / closing frame 17 is released. Subsequently, as shown by a two-dot chain line in FIGS. 1C and 2, the switching member 40 is switched to the engagement position above the cam member 32 and the cam member 32 is The state is sandwiched between the engagement protrusion 37a and the switching member 40.

Thereafter, when the hydraulic cylinder 13 is operated to protrude, the sliding metal frame 19 is slid downward in FIGS. 2 and 4, and the cam member 32 is shown by a solid line in FIG. It slides integrally from the position to the position indicated by the chain line. Accordingly, the moving member 30 is moved in the biasing direction of the coil panel 25 of the pressing mechanism 23 according to the action of the inclined cam surfaces 32a, 30d, and the pressing force of the coil panel 25 on the opening / closing frame 17 is released.

Next, when the restricting member 34 is rotated to the restricting position indicated by the solid line in FIG. 5 to the allowable position indicated by the chain line, the holding portion 27 of the holding member 27 arranged at the holding position indicated by the chain line in FIG. The outside of “a” is opened, and the outward rotation of the holding member 27 is allowed. In this state, as shown by the solid line in FIG. 11, the rotating member 24 is rotated to rotate the holding member 27 to the holding position force corresponding to the engagement protrusion 30b of the operating member 29 to the outward separated position. After that, the opening and closing metal frame 17 is released from the fixed metal frame 14 as shown by a chain line in FIG. As a result, the movable plate 21 is released from the state in which the movable plate 21 is superimposed on the fixed plate 15, and in this state, the plates 15 and 21 can be easily cleaned or replaced.

After the cleaning and replacement of the plates 15 and 21, the sliding nozzle device 12 is returned to the original state by operating in substantially the reverse order as described above. That is, after rotating the opening / closing frame 17 to the open position shown by the chain line in FIG. 6 to the closed position shown by the solid line, the rotating member 24 of the pressing mechanism 23 is rotated to the position shown in FIG. In this state, when the restricting member 34 is rotated to the restricting position shown by the solid line in FIG. 4 and FIG. 5, the rotation of the holding member 27 outward from the holding position is restricted. (Blocked).

Thereafter, when the hydraulic cylinder 13 is retracted, the sliding metal frame 19 is slid upward from the position of FIG. 2 in the same figure, and the sliding metal frame 19 is moved through the engagement protrusion 37 a of the interlocking frame 37 and the switching member 40. Thus, the cam member 32 is slid integrally with the position indicated by the chain line in FIG. 8 and the position indicated by the solid line. As a result, the moving member 30 is moved downward in FIG. 10 by the action of the inclined cam surfaces 32a, 30d, and the coil panel 25 of the rotating member 24 is compressed and deformed against the urging force. The The reaction force of the coil panel 25 is applied as a force in the closing direction to the opening / closing frame 17 via the moving member 30, the cam member 32, and the guide member 31, and the opening / closing frame 17 is held in the closed position. .

Subsequently, when the switching member 40 is switched from the engagement position shown by the two-dot chain line in FIG. 2 to the retracted position shown by the solid line, the cam member 32 is released from the linked state with the interlocking frame 37, and the free movement is performed. State. Further, the fixing member 43 is engaged with the engaging hole 32b of the cam member 32 to fix the cam member 32 to the opening / closing frame 17.

Thereafter, when the hydraulic cylinder 13 is operated to protrude, the movable plate 21 is slid downward from the position shown in FIG. The passage is closed. In this state, by appropriately opening the passage between the nozzle holes 15a and 21a with the hydraulic cylinder 13 as described above, the molten metal in the molten metal container 11 can be poured into a mold or the like.

As described above, in this embodiment, in the state where the cam member 32 is disposed at the position indicated by the solid line in FIG. 8, the pressing mechanism 23 applies the pressing force to the opening / closing frame 17 in the closing direction, In this state, by driving the hydraulic cylinder 13, the space between the fixed nozzle hole 15a and the movable nozzle hole 21a is opened and closed, and the opening degree is adjusted. Further, in a state where the cam member 32 is arranged at the position indicated by the two-dot chain line in FIG. . Therefore, in this embodiment, only the cam member 32 and the moving member 30 acting as a cam follower are provided between the opening and closing metal frame 17 and the holding member 27 for holding the opening and closing metal frame 17 in the closed state. With this simple configuration, it is possible to adjust the opening degree of the nozzle and to apply and cancel the pressing force to the opening / closing frame 17 as described above. In other words, such a simple mechanism can perform both the adjustment of the opening degree of the nozzle and the release and release of the pressing force to the opening / closing frame 17, thereby simplifying the configuration.

[0053] (Modification example)

In addition, this embodiment can also be modified as follows to be concrete. The moving member 30 is omitted, and the cam member 32 comes into direct contact with the holding member 27 of the pressing mechanism 23, and the holding member 27 is moved by the cam action against the panel force of the coil panel 25. To do.

The sliding metal frame 19 and the interlocking frame 37 are integrated, and a means such as an engagement protrusion 37a for supporting the cam member 32 is provided on the sliding metal frame 19.

The cam surfaces 30d and 32a are provided on one of the movable member 30 and the cam member 32.

Claims

The scope of the claims

[1] a fixed metal frame having a fixed plate having a fixed nozzle hole formed therein and adapted to be attached to a molten metal container;

An opening / closing frame that has a movable plate that is slidable in a state of being superimposed on the fixed plate and has a movable nozzle hole corresponding to the fixed nozzle hole, and that can be opened and closed with respect to the fixed metal frame. When,

Pressurizing means provided on the fixed metal frame, for applying a pressing force to the closed metal frame in a closed direction by a panel;

With

In a sliding nozzle device, a movable plate is slid in a closed state of the opening and closing metal frame to open and close a passage between the two nozzle holes.

An actuating member having a cam surface is provided between the pressurizing means and the opening / closing frame, and the panel is attached by an action of the cam surface accompanying the operation of the operating member in a closed state of the opening / closing frame. A sliding nozzle device which is deformed against a force to reinforce the pressing force.

[2] In Claim 1, the pressurizing means is rotatably supported by a fixed metal frame, and is rotatably supported by the rotatable member, and is opened and closed with the rotation of the rotatable member. A sliding nozzle device, comprising: a holding member movable between a position for holding a metal frame and a position for detaching from the metal frame, wherein the spring is provided between a rotating member and the holding member.

[3] The operation member according to claim 2, wherein the operation member is disposed between the opening / closing metal frame and the holding member, and the operation member deforms the panel against its elasticity by the action of a cam surface. Wherein the reaction force acts as a force in the closing direction of the opening and closing metal frame.

[4] The moving member according to claim 3, wherein the operating member is disposed between the opening / closing frame and the holding member so as to be movable in the same direction as the moving direction of the holding member, and the moving member and the opening / closing member. A cam member which is arranged between the frame and the cam surface and moves the moving member in a direction against the elasticity of the panel by the action of the cam surface, thereby receiving the reaction force of the panel and pressing the opening / closing frame in the closing direction. A sliding nozzle device characterized in that:

[5] The state according to [4], wherein the cam member is moved integrally with the movable plate to be disposed at a position where the opening and closing metal frame is pressed by the action of a cam and at a position where the pressing is released. A sliding nozzle device provided with a switching means for switching the cam member between a position where the cam member is fixed to the opening and closing mold.

[6] A pouring device, comprising: the sliding nozzle device according to any one of claims 1 to 5, and a driving device for sliding the movable plate.