JPS5910865B2 - Encinchiyuuzoukinochiyuuniyutoioidousurutamenosouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for moving the injection trough of a centrifugal casting machine of the backward casting type for making tubes etc., in particular the longitudinal injection trough of a centrifugal casting machine of the delavaud type. Regarding.

Although such devices have been known for many years and are commonly referred to as trough shifters, the environment in which such devices operate makes it difficult to prevent failure.

Generally, the gutter moving device is placed directly below the machine ladle (ladle installed at the casting machine) and the trough chute (gutter) into which molten metal is injected from the machine ladle. Operated by hydraulic means.

Every day, large tons of iron are poured from the transport ladle into the machine ladle and then from the machine ladle into the trough chute. Splashing can lead to undesired wear, uneven movement, and sometimes complete damage to the moving mechanism.

To prevent such hazards, splash protection covers and the like have been devised, but such measures obstruct access for inspection or repair, and this problem has been solved by removing slag from the machine lead. This is an even bigger problem because it makes it difficult to scoop out the slag and inject the liquid refractory material into the trough chute. This results in the inconvenience of sticking to the lip, rail or slideway of the moving device.

Therefore, various scrapers (or wipers) are used to automatically clean the rails or slideways.
Although such scrapers were partially effective, failures still occurred, production was interrupted, and sometimes the control switch was (illegally) removed by the mobile device when it was in motion.
Because of the operation, it was even necessary to take the entire casting machine out of operation.

These control switches are used for satisfactory operation of the casting machine.
Although they must operate error-free, these switches are of course placed in the same environment as the casting machine and are therefore equally susceptible to hazards from spilled (or splattered) molten metal, slag, or refractory material. therefore, failure of these switches occurs.

The drawbacks of the above-mentioned moving devices are that they are unintrusive, causing interruptions in the operation of the casting machine, leading to erroneous or rough movements of the moving device, and thus (cantilevered troughs).
The trough or raince is subject to severe vibrations that can cause improper flow of molten metal down the trough or cause metal splatter as it emerges from the trough onto the casting mold. In some cases, the trough may hit the mold and be damaged.

The object of the invention is to provide a device for moving the trough of a centrifugal casting machine of backward casting type, the device of the invention comprising an elevated holder (beam) and at least one It has an upright holder (suspended body or column), said upright holder is swingably connected at its upper end to said elevated holder (beam) and is suspended from said upright holder. A retainer plate is hinged to the lower end of the retainer and includes at least one trough (
A trough is attached to the retainer plate and means are provided for reciprocating the upright retainer to move the trough from a first position to a second position.

In a preferred embodiment of the apparatus of the present invention, the actuating mechanisms, including control switches, valves, etc., are located so that they are not susceptible to spillage or splashing of molten metal, slag, or refractory material.

The device as a whole is simple and easy to repair; it also allows complete access to the control valves, switches and actuating mechanisms even during operation of the casting machine; If a mechanism (for flipping the device upside down) is desired, this mechanism can be provided on the transfer device along with control valves, switches and other control means.

The explanation will be given below with reference to the attached drawings.

In FIG. 1, the trough shifter according to the present invention is suspended from the beam 10 via a bracket 12 attached to the beam 10 and a hinge pin 14 inserted into a hole in the bracket 12. and the pin 14 is connected to the tube 16 (
(Fig. 2), and this pipe 16 has an upright pillar (hanging body).
18 is welded.

The hinge pin 14 is maintained in its axial position by a snap ring 20.

A tube 22 (FIG. 2) is welded to the lower end of the upright post 18, through which a hinge pin 24 flies,
4 further passes through the bracket 26 and attaches the snap ring 2.
0, the bracket 26 is welded to a retaining plate 28, and a trough (gutter) is provided on this retaining plate 28.
30 and 31 are placed in a known manner.

Facing each of the two upright posts 18 is a pneumatic or hydraulic cylinder 34 mounted on a trunnion (i.e. swingably), the rond of this cylinder 34 being attached to the nearest upright post 18; Thus, when the cylinder 34 is actuated, the upright post 18, the retaining plate 28, and everything held on it are swung back and forth like a swing.

Adjustable stop mechanism 36 since it is important that troughs 30 and 31 are in the proper position each time the shifter is moved.
This mechanism 36 is preferably provided so that the stroke of the cylinder is limited during the inward (backward) stroke, and the full stroke of the cylinder is used during the outward (forward) stroke. may be used in both directions if it is convenient.

Also, instead of using two cylinders 34 as shown, a single cylinder attached to only one upright post 18 or retaining plate 28 could be used.

The limit switch 38 is actuated by a switch actuator 40 which is mounted on one of the upright posts 18 and moves back and forth therewith.

This limit switch 38 sends a signal to a control valve 42 for cylinder 34.

The cylinder 34, control valve 42, limit switch 38, and the piping and wiring therefor are protected by a sturdy enclosure 44, which accommodates the installation of other valves for controlling other mechanisms of the casting machine. It also provides space and serves as an attachment point for the beam 10.

The enclosure 44 may be provided with access doors or other desired means, but these do not form part of this invention.

In another embodiment, shown in FIG.
It protrudes outward in a cantilevered manner, with rains (
The injection tube 32 is placed and the trough 30 is mounted on the cantilevered portion of the retaining plate 28.

Such an arrangement provides more clearance above the trough for operation of the overhead crane and allows the length of the cantilevered portion of the hook 10 to be reduced.

The shifter is positioned so that in the untraveled position, the trough 30 is directly coaxial with the machine ladle 46 and the retaining plate 28 is substantially horizontal.

In operation, the troughs 30 and 31 are placed coaxially with the mold 48 or the spray rain (spray complete injection tube)
If a mold 48 is used, the trough 30 and reins 32 are coaxial with the mold 48.

The mold 48 is placed in front of the upward curve of the trough 30;
Molten metal is poured into trough 30 from mechanical ladle 46 .

Mold 48 is rotated, metal from trough 30 is poured into the rotating mold 48, and mold 4B is withdrawn from the trough, thereby distributing molten metal along the length of the mold.

Once enough metal has been poured, the mechanical ladle stops pouring and
The remaining metal is flushed out of the trough, leaving a very small portion of the metal solidified in the trough.

This solidified portion is called the splinter and must be removed before casting into the mold can be resumed.

This removal involves mechanically rotating the trough and turning it upside down.
Alternatively, the splinter may be picked out by hand, but in either case the next casting is delayed due to the time required to remove the splinter and any other trough preparation.

However, by using the shifter of the present invention, the first trough used can be removed from the working part of the casting machine and the second trough can be moved into a coaxial position with the mold, thus delaying the next casting due to trough preparation. This makes it possible to do this without causing any problems.

Although the present invention has been described above with reference to preferred embodiments and modifications thereof, it goes without saying that various modifications can be made within the scope of the present invention.

[Brief explanation of the drawing]

Fig. 1 is an elevational view of the device of the present invention seen parallel to the longitudinal axis of the trough, Fig. 2 is an elevational view taken in a direction perpendicular to the longitudinal axis of the trough, and Fig. 3 is an elevational view of the device of the present invention. FIG. 6 is an elevational view parallel to the longitudinal axis of the trough of another embodiment of the invention; 10... Holding beam, 18... Upright column, 2
8... Holding plate, 30, 31... Trough, 34... Operating cylinder, 46... Mechanical ladle, 48... Casting mold.

Claims (1)

[Claims] 1. A beam located at a high place; A hanging body that is swingably connected to the beam and suspended; A longitudinal force direction axis of a mold provided at the lower end of the hanging body. a retaining plate on which at least one injection gutter is mounted, the retaining plate being pivotally mounted on an axis parallel to the die; and being connected to the suspension for moving the injection gutter from a first position coaxial with the longitudinal axis of the mold; Apparatus for moving the injection trough of a backward casting centrifugal casting machine, comprising a reciprocating mechanism for moving it to a second position laterally spaced a predetermined distance from the longitudinal axis of the mold. 2 A beam located at a high place; A hanging body that is swingably connected to the beam and suspended; A suspension body that is pivoted on an axis parallel to the longitudinal axis of the mold provided at the lower end of the hanging body. a retaining plate having at least one injection gutter mounted thereon; connected to the suspension for moving the injection gutter from a first position coaxial with the longitudinal axis of the mold; It is equipped with a reciprocating mechanism that moves it to a second position that is separated by a predetermined distance in the lateral direction.
The reciprocating mechanism is a device for moving an injection trough of a backward casting type centrifugal casting machine, the reciprocating mechanism being partially disposed within the outer enclosure of the actuating means provided near the hanging body. 3 A beam located at a high place; A hanging body that is swingably connected to the beam and suspended; A hanging body that is pivoted on an axis parallel to the longitudinal axis of the mold provided at the lower end of the hanging body. a retaining plate having at least one injection gutter attached thereto; connected to the suspension to move the injection gutter from a first position coaxial with the longitudinal axis of the mold to a first position coaxial with the longitudinal axis of the mold; a reciprocating mechanism for moving the injection gutter from a first position to a second position spaced laterally by a predetermined distance from the longitudinal axis of the mold; Device for moving the injection trough of a centrifugal casting machine of backward casting type, provided with an adjustable stop to ensure proper positioning of the injection trough when moved.