JPS5922620B2 - Nozzle automatic connection and separation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic nozzle connection/separation device that automatically connects or separates a nozzle to a nozzle receiver provided on the bottom of a container.

As shown in FIGS. 1 and 2, a conventional device of this type has a nozzle receiver 6 provided on the bottom surface 5 of a container 1, and a nozzle mounting device 11 attached to a pedestal 12 near the container 1. There is a device for manually connecting or disconnecting the nozzle 10.

The nozzle mounting device 11 used in this conventional device is
A rod receiver 3 is attached to a support 13 that is rotatably provided perpendicularly to 2.
0 is supported by a pivot pin 14, and one end of the vertically movable cylinder 15 is pin-coupled to the support 13, and the rod receiver 30
The rod receiver 30 is connected with a pin to the lower end of the rod so that it can swing freely in the vertical direction.Furthermore, the rod receiver 30 has a rod 17 with a nozzle support 19 fixed to its tip held between rollers 31, so that the rod receiver 30 can swing freely in the longitudinal direction. This is a device in which the nozzle support 19 is made movable by manipulating the bundle 32.

According to this conventional device, first, two nozzle support rods 2 are fixed to the nozzle support 19 on opposite circumferential sides of the nozzle 10.
After the nozzle 10 is swingably placed on the nozzle support 19 by placing the nozzle 10 on the nozzle support 19, the operator operates the bundle 32 to move the nozzle 10 to a position where the upper end opening of the nozzle 10 faces the lower surface of the nozzle receiver 6. Then, by operating the vertical cylinder 15 according to an operation command not shown in the figure and moving the nozzle support 19 upward, the upper end opening of the nozzle 10 is connected to the nozzle receiver 6. The nozzle receiver 6 and the nozzle 10 are separated by operation.

However, according to such conventional devices, the operation of moving the nozzle 10 placed on the nozzle support 19 directly below the nozzle receiver 6 of the container 1 is performed by the operator by visually operating the handle 32. Therefore, sometimes due to an error in visual measurement, the positions of the nozzle receiver 6 and the nozzle 10 may be misaligned and the connection cannot be made, resulting in the disadvantage that the positioning operation must be repeated again, which requires a lot of effort.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide an automatic nozzle connection/separation device that can reliably and automatically connect or separate a nozzle receiver and a nozzle in a single operation. The feature is that the nozzle is formed around the nozzle receiver by guiding the tentacle protruding from the tip of the rod, which is operated by a cylinder for forward and backward movement provided in place of the rond receiver, by a tentacle guide provided below the container. The present invention includes a horizontal guiding mechanism that guides the nozzle guide downwardly, and an upward guiding mechanism that guides the nozzle to the nozzle guiding frame and connects it to the nozzle receiver when the nozzle support is moved upward by a vertical movement cylinder.

Embodiments of the present invention will be described below based on the description of the drawings.

In FIGS. 3 to 6, 1 is a container such as a ladle used in a steelworks, and after molten steel is put inside, it is rotated and transferred above a tundish 2 by a swirling tower device (not shown). It has stopped within a predetermined error range.

A valve rod 4 that moves up and down by a device not shown comes into contact with a discharge hole 3 formed at the bottom of the container 1 to prevent the discharge of molten steel.

A nozzle receiver 6 is provided around the outlet of the discharge hole 3 on the bottom surface 5 of the container 1.
A nozzle guide frame 8 is formed around the nozzle receiver 6 and has a plain surface 7 with an umbrella-shaped interior opening.

Furthermore, on the bottom surface 5 of the container 1, there is a tentacle guide 9 made of a plate bent in a U-shape, and its bent tip is attached to the bottom surface 5 of the container 1.
The opening side is fixed to the center of the bottom surface 5 with the open side facing the outside opposite to the center.

Near the container 1 in the direction connecting the center of the bottom surface 5 of the container 1 and the tip of the tentacle guide 9, a nozzle attachment device 11 for connecting or separating the nozzle 10 from the nozzle receiver 6 of the container 1 is fixed to the ground or a fixed object. It is attached to a pedestal 12.

The nozzle mounting device 11 includes a support 13 rotatably provided vertically on a pedestal 12, a cylinder 16 for forward and backward movement supported on the support 13 by a pivot pin 14, and one end of which is attached to the support 1.
3, and the other end is pin-coupled to the lower end of the front-back cylinder 16, and the vertical-motion cylinder 15 is provided at the tip of the rod 17 of the front-back cylinder 16 via a connecting pin 18 to be rotatable in the horizontal direction. It consists of a tentacle 20 projecting upward on a octopus-shaped nozzle support 19° rod 17.

The distance from the inner center of the nozzle support 19 to the protruding position of the tentacle 20 is set to be approximately equal to the distance from the center of the nozzle receiver 6 to the tip of the tentacle guide 9.

The nozzle 10 placed on the nozzle support 19 has two nozzle support rods 21 on opposite circumferential sides so as to be supported by the nozzle support 19 while freely swinging and maintaining a vertical posture.

In addition, a protrusion 220 is provided below the nozzle support 19 so that the nozzle support 19 is always centered on the extension line of the lot 17.
Both sides are pressed by a centering spring 24 that is engaged with a frame 23 whose one end is fixed to the tip of the rod 17.

The stop plate 25 fixed below the support body 13 is arranged so that it hits two stoppers 26 fixed to the pedestal 12 so that the cylinder 16 for longitudinal movement does not rotate in the horizontal direction beyond the stopping error range of the container 1. This serves to restrict horizontal rotation of the longitudinal motion cylinder 16.

The operation of the present invention having the above configuration will be explained.

When the container 1 is rotatably transferred above the tundish 2 and stopped within a predetermined error range, when pressure fluid is supplied to the cylinder 16 for forward and backward movement, the rod 17 moves forward and the tentacle 20 moves forward. It comes into contact with the open side of the tentacle guide 9.

Then, as the rod 17 further advances, the tentacles 20 slide on the tentacle guide 9, gradually advancing to the center of the tentacle guide 9, and finally reaching the tip and stopping.

At this time, the longitudinal movement cylinder 16 rotates in the horizontal direction together with the support 13 and gradually changes its posture, but the tentacle 20
When it reaches the tip of the tentacle guide 9 and stops, it simultaneously stops rotating and maintains a horizontal posture.

In this state, if the container 1 is stopped at a fixed position without any error, the longitudinal movement cylinder 16 and the rod 17 is located, and the distance between the center of the nozzle receiver 6 and the tip of the tentacle guide 9 is approximately equal to the distance between the tentacle 20 and the center of the nozzle 10 supported by the nozzle support 19. Uke 6
The upper end opening of the nozzle 10 is located almost directly below.

In addition, when the container 1 is out of the normal position but stopped within a predetermined error range, the straight line connecting the center of the nozzle receiver 6 and the tip of the tentacle guide 9 and the cylinder 16 for forward and backward movement. The straight lines passing through the centers of the rods 17 do not match, so the upper end opening of the nozzle 10 is not positioned directly below the nozzle receiver 6 of the container 1, but is positioned below the outer periphery of the nozzle guide frame 8. It has become.

In either case, when the tentacle 20 reaches the tip of the tentacle guide 9 and the forward movement of the rod 17 stops, a sensing device (not shown) senses this and issues a command to a control device (not shown). Pressure fluid is supplied to the vertical movement cylinder 15.

Then, as the cylinder 16 for longitudinal movement rotates around the pivot pin 14 and moves upward, the nozzle support 19 at the tip of the rod 17 also rises, and the nozzle support rod 21 is attached to the nozzle support 19.
The upper end opening of the nozzle 10 supported via the nozzle receiver 6 is connected to the nozzle receiver 6, and this connected state is maintained until a separation command is given to the control device.

When the nozzle support 19 rises while the container 1 is out of its normal position and stopped within a predetermined error range, the periphery of the tip opening of the nozzle 10 is moved to the nozzle guide frame 8.
When the nozzle support 19 further rises, the nozzle 10 is guided to the main surface I and finally reaches the nozzle receiver 6.
and the upper end opening of the nozzle 10 are connected.

At this time, since the nozzle support 19 is provided at the tip of the rod 17 so as to be freely rotatable in the horizontal direction, even if the nozzle 10 is guided by the main surface 7 of the nozzle guide frame 8 and moves toward the center of the nozzle receiver 6, this will not occur. The nozzle support 19 also moves accordingly.

After the nozzle receiver 6 and the nozzle 10 are connected in this way, when the molten steel in the container 1 is to flow down into the tungpush 2, the valve stem 4 is raised by a device not shown to open the discharge hole 3. Just open it.

Then, the molten steel passes through the discharge hole 3 and the nozzle 10 and enters the tongue pusher 2.

Next, when separating the nozzle receiver 6 and the nozzle 10, a command is given to the control device to discharge the pressure fluid from the vertical movement cylinder 15 and the longitudinal movement cylinder 16, or to switch the supply direction. is the pivot pin 1
4 as the center, and the rod 17 moves backward, so the nozzle 10 moves downward, then moves toward the forward/backward movement cylinder 16, moves away from the nozzle receiver 6, and automatically stops. The vessel 1 containing molten steel waits for it to be rotated and transferred by the swirling tower device.

During this standby, the support 13 prevents the cylinder 16 for longitudinal movement from rotating more than necessary in the horizontal direction for some reason.
This is prevented by the stop plate 25 hitting a stopper 26 fixed to the pedestal 12.

As is clear from the above description, the nozzle automatic connection/separation device of the present invention uses the action of the horizontal guidance mechanism as the nozzle support 19 moves in the horizontal direction, that is, the nozzle support 19
A tentacle 20 is placed on the nozzle support 19 by a tentacle guide 9 provided at the bottom of the container 1 that guides the tentacle 20 protruding from a rod 17 that swingably supports the container 1 in a horizontal and vertical direction. Place the nozzle 10 into the nozzle receiver 6 of the container.
The nozzle guide frame 8 formed around the nozzle receiver 6 is moved horizontally downward, and further, as the nozzle support 19 moves upward, the nozzle guide frame 8 formed around the nozzle receiver 6 is moved toward the nozzle 10
Since the nozzle 10 is configured to be connected to the nozzle receiver 6 by the action of guiding the upper end opening, with this device, unlike conventional devices of this kind, the nozzle receiver can be connected visually or manually. Since there is no need to align the nozzle 6 and the nozzle 10, it is possible to reliably connect the nozzle 10 and the nozzle receiver 6 of the container 1 in one operation, and it is possible to improve the efficiency of the connection and separation work between the nozzle 10 and the nozzle receiver 6 of the container 1. .

7 and 8 show other embodiments of the invention.

The difference from the previous embodiment is that the cylinder 16 for longitudinal movement is mounted on the frame 1.
Two points are that forced rotation in the horizontal direction is made possible by a horizontal movement cylinder 27 attached to one end of the tentacle guide 9, and that the attachment position and attachment direction of the tentacle guide 9 to the bottom surface 5 of the container 1 are different.

The difference from the previous embodiment in the operation of connecting the nozzle 10 and nozzle receiver 6 in this embodiment is that after the container 1 has stopped, the longitudinal movement cylinder 16 is rotated in the horizontal direction by the horizontal movement cylinder 27, and the tentacle 20 is rotated horizontally by the horizontal movement cylinder 27. Other connecting and separating operations and their effects are the same as in the previous embodiment, except that they are brought into contact with one piece of the guide 9.

FIG. 9 shows a centering device for the longitudinal movement cylinder 16 used in the embodiment shown in FIGS. 3 to 6. FIG.

That is, at the time of separation, both sides of the stop plate 25 of the support body 13 are held by the centering lever 28 whose one end is supported on the pedestal 12, so that the cylinder 16 for longitudinal movement is centered at a predetermined position, and at the time of the connection operation, the cylinder 16 is returned to the predetermined position. By opening the center lever 28, the longitudinal cylinder 16 can freely rotate in the horizontal direction.

The fixation and release of the stop plate 25 by the two centering levers 28 is performed by a centering cylinder 29 whose both ends are connected to the respective centering levers 28, but instead of this, the two centering levers 28 are held together by an elastic body such as a spring. The centering levers 28 may be pulled or pressed in opposite directions.

However, in this case, even during the connection operation, the longitudinal motion cylinder 16 receives a rotational moment in the direction of centering, so the pressure of the pressure fluid supplied to the longitudinal motion cylinder 16 is increased somewhat to prevent the rod 17 from moving. There may be cases where the sliding resistance between the tentacle 20 and the tentacle guide 9 cannot be overcome unless the stretching force is increased.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the main part of a conventional device, FIG. 2 is a sectional side view of the main part of the same conventional device, FIG. 3 is a plan view of the main part of the present invention, and FIG.
5 and 6 are explanatory views of the operation at positions corresponding to FIGS. 3 and 4, and FIGS. 7 and 8 are sectional side views of essential parts of the present invention. FIG. 9 is an explanatory view of another embodiment at a position corresponding to FIG. 4, and FIG. 9 is an explanatory view of the centering device of the longitudinal cylinder. 1... Container, 3... Discharge hole, 6...
... Tuzzle receiver, 8 ... Tuzzle guide frame, 9...
...Tentacle guide, 10...Tsuzuru, 12...
... Frame, 13... Support, 15...
- Cylinder for vertical movement, 16... Cylinder for longitudinal movement, 11... Rod, 19... Tuzzle support, 20... Tentacle (horizontal guidance mechanism).

Claims (1)

[Scope of Claims] 1. A nozzle automatic connection/separation device for attaching and detaching a nozzle to and from a nozzle receiver provided around the outlet of a discharge hole at the bottom of a container, comprising: an umbrella-shaped opening inside the nozzle receiver provided around the nozzle receiver; a tentacle guide provided at the bottom of the container, having a nozzle guide frame with a bare surface, and a tip bent in a U-shape, with the tip pointing toward the nozzle guide frame and the open portion thereof pointing outward; a pedestal provided near the container in a direction from the discharge hole of the container to the tip of the tentacle guide; a support provided vertically to the pedestal so as to be rotatable in a horizontal direction; a cylinder for forward and backward movement, which is rotatably provided in a direction and has its rod directed toward the container; and a cylinder for vertical movement, one end of which is rotatably supported by the cylinder for forward and backward movement, and the other end of which is rotatably supported by the support. a cylinder; a nozzle support provided at the tip of the rod of the longitudinally moving cylinder so as to be rotatable in the horizontal direction and capable of returning to a predetermined position; and from the center of the nozzle support position of the nozzle support to the center of the discharge hole. A nozzle automatic connection and separation device comprising: a tentacle projecting above the rod at a distance approximately equal to the distance from the tip of the tentacle guide;