JPS60158973A - Automatic pouring device in casting installation - Google Patents

Abstract

PURPOSE:To eliminate the need for moving a ladle transporting member while tilting the ladle and to simplify the construction of a pouring device by attaching the ladle via a ladle attaching member to the ladle transporting member. CONSTITUTION:An automatic pouring device is made into the construction provided with a ladle transporting device 9 which moves a ladle transporting member 8 between a melting furnace 5 and the part above a mold 2, a ladle supporting member 10 which has a circular arcuate shape around the approximately horizontal axis C lower than the member 8 and is attached to the member 8 so as to move circumferentially around the axis C, a ladle 12 which is so fixed to the member 10 that the pouring port 11 is positioned near the axis C and a ladle tilting device 13 which can move the member 10 with respect to the member 8. The position of the pouring port is therefore scarecely changed even if the member 8 is stopped and the ladle 12 is tilted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic pouring device for J3 casting equipment.

In conventional casting equipment, molten metal is poured into a mold manually.

A conceivable device for automatically pouring metal is one in which a ladle containing molten metal is moved above the mold in a melting furnace, and then the ladle is tilted to pour the molten metal into the mold. In this case, the ladle is tiltably attached to a ladle transport member that moves between the melting furnace and the upper part of the mold, but if the ladle is attached normally, the position of the pouring spout will change as the ladle tilts. It will change. Therefore, if left as is, the sprue of the mold would have to be made larger than necessary, which would be uneconomical. In addition, by moving the ladle transporting member as the ladle tilts, or by attaching the ladle steel to the ladle transporting member through a special mechanism, the position of the spout will not change even if the ladle tilts. However, in either case, the overall structure of the device is generally complicated.

It is an object of the present invention to solve the above-mentioned problems and to provide a simple automatic pouring device having a structure in which the position of the pouring spout hardly changes even if the ladle is tilted.

The automatic pouring device according to the present invention includes a ladle transporting device that moves a ladle transporting member between the melting furnace and the upper part of the mold, and a ladle transporting device that moves a ladle transporting member between the melting furnace and the upper part of the mold, and a circular arc shape centered on a substantially horizontal axis below the ladle transporting member. A ladle supporting member is attached to the ladle carrying member so as to be movable in the circumferential direction around this axis, and a ladle supporting member is fixed to the ladle supporting member so that the pouring spout is located near the substantially horizontal axis. The ladle is provided with a ladle tilting device for moving the ladle supporting member relative to the ladle transporting member.

This pouring device automatically pours molten metal into a mold as follows. That is, first, a ladle is moved to a melting furnace by a ladle conveying device, and an appropriate amount of molten metal is placed therein. Next, this steel plate is moved above the mold. and,
With the ladle transport member stopped, the ladle support member is moved in the circumferential direction by the ladle tilting device to tilt the ladle, and molten metal is poured into the mold through the spout.

At this time, the ladle support member moves in the circumferential direction around the substantially horizontal axis at its center without forming an arc, and the pouring spout of the ladle fixed to the ladle support member moves near this axis. Because of its position, the position of the spout will hardly change even if the ladle is tilted.

Since the automatic pouring device according to the present invention has the above configuration, even if the ladle is tilted with the ladle conveying member stopped,
The position of the spout remains almost unchanged. Therefore, there is no need to make the sprue of the mold particularly large, which is economical. In addition, the ladle is simply attached to the ladle transport member via a ladle support member with an extremely simple structure, and there is no need to tilt the ladle or move the ladle transport member. , the structure of the entire device is simple.

The present invention will be described in detail below with reference to the drawings. In addition,
In the following explanation, the left side of FIG. 1 and FIG.
The right side of the figure is the rear, the lower side of Figure 2 is the left, and the upper side of the figure is the right.

Figures 1 and 2 show part of automatic casting equipment for aluminum alloy castings, in which a mold (2) is placed above the floor (1).
An upper conveyor (3) for pouring molten metal forward and a lower conveyor (4) for conveying the mold (2) rearward after pouring the molten metal are arranged above and below.

Also, the floor (1) on the right side of these conveyors (3) (4)
A melting furnace (5) is placed above the conveyor (3) (4).
An automatic pouring device (6) is provided between the melting furnace (5) and the melting furnace (5). The mold (2) placed on the upper conveyor (3) is intermittently sent forward, and during this transfer it is stopped for a certain period of time at a pouring position (7) on the left side of the melting furnace (5).

Molten aluminum alloy (molten metal) is poured into the mold (2) stopped at this position (7) by the pouring device (6) as described later, and the mold (2) after pouring is further transferred to the upper conveyor. (3) sends it forward. The mold (2) after being poured has been sent to the front end of the upper conveyor (3) and the lid (
(not shown) to the front end of the lower conveyor (4),
It is also sent to the rear by the lower conveyor (4).

As shown in detail in FIGS. 3 to 8, the pouring device (6) transports the ladle conveying member (8) between the melting furnace (5) and the upper conveyor (
The ladle transporting device (9) that moves between the mold (2) at the pouring position (7) in 3) and the horizontal axis (central axis) ( It has a circular arc shape centered at C) and is attached to the steel bar carrier member (8) so as to be movable in the circumferential direction around this axis (C).
l (10), a dowel (12) fixed to the ladle support member (10) so that the spout (11) is located near the central axis (C), and a ladle transport part ttji (8). The ladle tilting device (13) for moving the ladle support member (10) relative to the ladle support member (10), and a control device (path shown) for these devices are provided.

Details of the ladle transport section @(9) are shown in FIGS. 3 to 6.

A circular hole (16) is drilled in the center of the top plate (15) of the fixed stand (14) installed on the floor (1). A vertically protruding cylinder 17) is fixed. A plurality of swivel guide support members (18) having horizontal sliding surfaces at their upper ends are symmetrically arranged on the fixed base (14) around the cylinder (17). A horizontal disc-shaped swivel base (19) is rotatably attached to the outer periphery of the cylinder (17), and a sliding ring (20) fixed to the lower surface of the outer periphery of the swivel base (19) serves as a guide support member. (18)
It is slidably placed on the sliding surface of.

A worm wheel (21) that rotates together with the swivel base (19) is attached to the lower side of the swivel base (19).

A long A-me shaft (22) is supported in the front and back on a fixed base (14), and a worm (23) provided on the worm shaft (22) is connected to the worm wheel (21) of the swivel base (19).
) are interlocked. The rear part of the worm shaft (22) passes through a gear box (24) fixed to the rear side of the fixed base (14), and a rotating DC motor (25) is mounted downward on the gear box (24). ) is connected to the arm shaft (22) via bevel gears (26) and (27).
The rotation of the motor (25) is controlled by bevel gears (26) (27),
It is transmitted to the worm wheel (21) by the worm shaft (22) and the worm (23), thereby causing the swivel table (19) to pivot around the cylinder (11>).

In addition, at the front end of the worm shaft (22), there is a swivel base (19).
An angle detector (28) is connected to detect the rotation angle of the worm shaft (22), and a manual handle connection part (29) is connected to the rear end of the worm shaft (22).
is formed. Moreover, the space between the upper part of the fixed base (14) and the swivel base (19) is covered with a cover (30).

A vertical swivel tower (31) is fixed on top of the swivel base (19). The swirling tower (31) has a vertically long box shape with an opening at the rear, and the swirling tower (
31) A pair of quarter-cylindrical doors (33) that seal the rear side.
The - side edge of is attached by a hinge. Also,
The top plate (34) of the swirling tower (31) extends horizontally to the rear so as to also seal the upper side of the pair of #s (33) in the closed state.

Two rows of vertical guide rails (36) on the left and right are fixed to the inner surface of the front plate (35) of the turning tower (31), and guide blocks (38) are fixed on the upper and lower sides on both the left and right sides of the front surface of the elevating member (37).
are attached to these rails (36) so that the upper and lower tanks can move freely. A horizontal bin (40) in which the middle part of the hydraulic cylinder (39) arranged upward in the turning tower (31) extends left and right.
) is rotatably attached to the lower inner surface of the front plate (35), and the upper end of the piston rod (41) is similarly attached to the front part of the elevating member (37).

As the rod (41) expands and contracts, the elevating member (37)
) moves up and down between the upper end position shown by the solid line in FIG. 3 and the lower end position shown by the chain line in the same figure. Note that both ends of a cable carrier (42) holding electric wires and air hoses are connected to the upper and lower intermediate portions of the inner surface of the front plate (35) of the turning tower (31) and the elevating member (37).

The left and right rails (3) on the top of the front plate (35) of the turning tower (31)
6), a vertically elongated opening (43) is provided. Edge plates (44) that extend forward at right angles and then curve outward at right angles are integrally formed on the left and right edges of the opening (43). Board (44
) are provided with bellows support plates (45) and (46) that extend horizontally forward of the support plates and close both upper and lower ends of the support plates. A front plate (35) is installed on the upper part of the elevating member (37) in the swirling tower (31).
A cylindrical horizontal arm (47) extending forward is fixed through the opening (43) of the arm (47). (43) are fixed.The cross sections of these covers (48) and (49) are approximately U-shaped, and the lower part of the upper cover (48) and the lower cover (43) are fixed. The upper part of the arm (49) is formed into a semi-cylindrical shape along the outer periphery of the arm (47).These covers (48) and (49) are connected to each other while sandwiching the arm (47) from above and below. There are bellows FIZ (50) between the upper bellows support plate (45) and the upper surface of the upper cover (48) and between the lower surface of the lower cover (49) and the lower bellows support plate (46), respectively. (51) is attached. Upper snake II! Lower end plate (52) of (50)
The rear part of the upper end plate (53) of the lower bellows (51) is inserted between the front plate (35) of the swirl tower (31) and the opening edge plate (44), and the upper and lower bellows (so) (si) also enters between these and closes the openings (43) at the top and bottom of the covers (48) (49>).

A gear box (54) is fixed to the front end of the horizontal arm (47), and a steel carrying member (8) is fixed to the lower end of a cylindrical vertical arm (55) fixed to the lower surface of the gear box (54). ing.

Details of the ladle carrying member (8), ladle supporting member (10) and dowel (12) are shown in FIGS. 7 and 8.

The ladle carrying member (8) has a box shape, and inside thereof, three horizontal shafts (56> (57)) extending left and right are fixed in parallel to each other. The lower two shafts (57) A guide roller (58) is rotatably attached to each of the upper and lower sides, and a shallow annular groove (59) is formed in the intermediate portion of each of the upper and lower ends.

The remaining shafts (56) above these rollers (58)
A gear (60) and a bevel gear (61) which are connected to each other are rotatably attached.

The ladle support member (10) has a rectangular cross section, and teeth (62) are formed on its upper surface (outer peripheral surface). The support member (10> passes through the conveying member (8) and carries two rollers (5).
8) and the gear (60), and the lower part (inner peripheral part) is fitted into the groove (59) of the roller (58) and the teeth (62) mesh with the gear (60). I am stuck between these questions.

The rear end of ladle 1 (12) is fixed to the rear end of support member (10), and the spout (11) at the front end of ladle (12) is slightly in front of the central axis (C) of support member (10). It is located in Then, due to the rotation of the gear (60) of the conveying member (8), the support member (10) moves in the circumferential direction with the two rollers (58) as guides, and as a result, the ladle (12) It is tilted around (C). A circular hole (64) is drilled in the center of the bottom wall (63) of the ladle (12), and the upper part around this hole (64) is formed integrally with the bottom wall (63), with the top and bottom open and the IC.
It is surrounded by a cylindrical portion (65). The height of this cylindrical portion (65) is slightly lower than the height J of the peripheral wall (66) of the ladle (12).

Details of the ladle transport device f(13) are shown in FIGS. 3-5, 7 and 8.

A vertical arm (5) is attached to the top plate (67) of the steel carrying member (8).
A vertical shaft (68) is rotatably supported and protrudes from the lower part of the shaft (68) into the conveying member (8), and a bevel gear (69) is fixed to the upper end of the shaft (68). ) meshes with the bevel gear (61) of the conveying member (8). The gear box (54) between the arms (47) (55) has a vertical shaft (70) projecting therethrough into the vertical arm (55).
) is rotatably supported. A vertical intermediate shaft (71>) is disposed within the vertical arm (55), and both upper and lower ends of this shaft (71) are connected to the lower end of the upper vertical shaft (70) and the upper end of the lower vertical shaft (68), respectively, with universal joints. (72) (7
3). A horizontal shaft (14) is rotatably supported within the horizontal arm (41) and extends through the horizontal arm (41) in the axial direction, with both front and rear ends protruding into the gear box (54) and the turning tower (31). The front end of (74) is connected to the upper vertical shaft (70) via bevel gears (75) and (76).

In addition, a DC motor (77) for tilting steel is attached to the upper part of the horizontal arm (47)' in the revolving tower (31), and this motor (77) is connected to the -C horizontal axis via a belt (78). (74) is connected to the rear end portion.

The ladle tilting motor (77) is rotated by a belt (78), horizontal shaft (74), bevel gears (75) (76), upper vertical shaft (70), intermediate shaft (71), and lower vertical shaft (68). and is transmitted by the bevel gears (69) (61) to the gear (60) of the conveying member (8), so that the handle m (12) is tilted as described above. In addition, an angle detector (79) that detects the rotation angle of the motor (71) in order to detect the inclination of the steel shaft (12) is mounted on the horizontal arm (47) in the turning tower (31).
) is attached to the upper part of the motor (
77). The tilting of the handle (12) is controlled by the control device using an external setting value or an angle detector (79).
This is done by controlling the motor (77) based on the output of the motor.

The portion from the horizontal arm (47) to the ladle (12) is connected to the elevating member (31) of the ladle transport device (9) with the front end of the horizontal arm (41) above the melting furnace (5). ), it moves up and down between the upper end position indicated by a solid line in FIG. 3 and the lower end position indicated by a chain line in the same figure. When these are at the upper end position, the ladle (12) is located slightly above the upper end of the melting furnace (5), and when these are at the lower end position, the lower side is below the upper end of the vertical arm (55). Melting furnace (5)
Inside, the ladle (12) touches the surface of the molten metal in the furnace (5) (
The water level is slightly lower than (L). Note that the ladle (12) is raised and lowered by the control device controlling the hydraulic cylinder (39).

In addition, the portion from the horizontal arm (47) to the handle 1 (12), while at the upper end position, moves left and right as the swivel table (19) and the swivel tower (31) of the steel transport device (9) rotate. As a result, the steel strip (12) is turned into the melting furnace (12).
It moves between the viewing force and the upper conveyor (3) above the mold (2) in the pouring position (7). The ladle (12) is turned by the control device controlling the turning motor (25) based on external settings, the output of the angle detector (28), and the like. Note that the horizontal arm (47), which is not shown by solid lines in FIGS. 2 and 5, rotates left and right at equal angles from a reference position, and this angle is set in the control device. In addition, to set the reference position of the horizontal arm (47), attach the manual handle (path shown) to the manual handle connection part of the A-arm shaft (22) of the steel carrying device (9). This is done by rotating the worm shaft (22) and pivoting the horizontal arm (47) to the reference position. However, the setting of the turning angle of the horizontal arm <47) is not limited to the above method.

As shown in FIGS. 7 and 8, the arm (47) (
An air hole (8) is provided in the rear plate (81) of the gear box (54) between
2), and an air hole (path shown) is provided in the bottom plate (83) of the gear box (54) to communicate between the inside of the gear box (54) and the inside of the vertical arm (55). Further, air exhaust holes (85) (86) are provided in the front plate (84) of the gear box (54) and the peripheral wall of the vertical arm (55). Although not shown, one end of an air hose is connected to a portion of the horizontal arm (47) inside the rotating tower (31), and the other end of the air hose is connected to a lifting member ( 37) is connected to the tip of the side. Fixed stand (14
) Another air hose is passed through circle 1 (17), and one end of this hose is connected to the swirl tower (
31) side, and the other end is the side plate (8) of the fixing base (14).
7) are connected to the inside of the pipe joints installed on the pipes. Further, another air hose connected to a cooling air source is connected to the outside of this pipe joint. Hydraulic hoses (88) and (89) for the hydraulic cylinder (39) are similarly led out from the fixed base (14) through the cylinder (17). In addition, a ladle tilting motor (77
) and the electric wire of the angle detector (79).

Like the air hose, it is led out from the fixed base (14). In addition, in order to protect these hoses and electric wires, rubber rings (90) are fixed to both end faces of the cylinder (17), and the rubber cylinders (91) fitted into the inner surface of the cylinder (17) are attached to the upper and lower rings. It is held in place by (90).

The above-mentioned pouring device (6) automatically pours molten metal into the mold (2) moving to the pouring position (7) of the upper conveyor (3) in the following manner.

That is, first, the empty steel plate (12) in a horizontal state is rotated at the upper end position to above the melting furnace (5), and the pouring spout (
11) is slightly tilted upward, then descends into the furnace (5) and stops at the lower end position. This allows the ladle (12
) is immersed in the molten metal in the furnace (5), and the ladle (12) is filled with the molten metal. Next, the steel plate (12) rises to a position slightly above the molten metal level (t) in the furnace (5), and returns to a horizontal state at this position. As a result, a certain amount of molten metal remains in the ladle (12) depending on the slope of the rise from the molten metal level (L). The inclination of the ladle (12) at this time, that is, the ladle (1
2) The amount of molten metal to be added is set in the control device according to the type of casting.

When the ladle (12) is submerged in the molten metal, the molten metal below the molten metal level (L) passes through the hole (64) and the cylindrical part (65) in the bottom wall (63) of the ladle (12). Because it goes inside,
There is little risk of slag floating on the hot water surface (L) entering the ladle (12). Furthermore, since the pouring spout (11) is on top when the ladle (12) is tilted, there is no fear of dirt getting on the pouring spout (11).

The ladle (12), which has become horizontal with a certain amount of molten metal in it, further rises to the upper end position above the furnace (5), and then turns to above the pouring position (7) of the upper conveyor A7 (3). do. By this time, the mold (2) has moved to the pouring position (7) and has stopped, and the ladle (12) is at the spout (11).
Place the mold (2) so that it is located slightly above the rear of the hot water [] (92).
) (see Figure 7). Then, while the ladle conveying member (8) is stopped, the ladle (12) is tilted as shown by the chain line in FIG. 7) Injected into the day sprue (92). At this time, since the dowel (12) is tilted about the central axis (C) of the ladle support member (10) slightly behind the spout (11), the position of the spout (11) hardly changes.

Therefore, even if the sprue (92) is not particularly large,
Molten metal can be reliably poured into the mold (2).

After pouring the hot water into the ladle (12), the ladle (12) returns to a horizontal position.
It rotates again to the top of the melting furnace (5), and at the same time, the mold (2) after pouring is moved forward by the upper conveyor (3), and the next mold (2) is moved to the pouring position (7). It's moving. By repeating such operations, the molten metal is poured into the molds (2) which are successively moved to the pouring position (7). During the pouring process, cooling air is supplied into the horizontal arm (41) by an air hose, and this air flows from the horizontal arm (47) into the gear box (54) and into the vertical arm (55). These are cooled and the discharge hole (85)
(86) and is discharged to the outside.

Ladle transport device (9), ladle support member (10), ladle (1
2) and the configuration of the ladle tilting device (13) are not limited to those of the above embodiments, but can be modified as appropriate. For example, the ladle transport device may be of a type that reciprocates in a straight line instead of rotating the ladle.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway side view showing a part of the casting equipment, FIG. 2 is a plan view of the same, and FIG. 3 is a partially cutaway side view of an automatic pouring device. Fig. 4 is a cutaway rear view of the same part, Fig. 5 is an enlarged sectional view taken along line V-V in Fig. 3, Fig. 6 is an enlarged sectional view taken along line VI-Vl in Fig. 3, and Fig. 7 is automatic pouring. FIG. 8 is a partially cutaway side view showing an enlarged view of the steel section of the device, and FIG. 8 is a cross-sectional view taken along the line ■--■ in FIG. (2)...Mold, (5)...Melting furnace, (6)...Automatic pouring device, (8)...Ladle transport member, (9)...
Steel transport device, (10)... Ladle support member, (11)
... spout, (12) ... ladle, (13) ... ladle tilting i! (C)...Horizontal axis. Above Figure 1 Figure 2

Claims (1)

[Claims] A ladle transporting device (9) that moves the ladle transporting member (8) between the melting furnace (5) and the mold (2), and a ladle transporting member (8).
8) A dowel shaped like an arc centered on a substantially horizontal axis (C) located below and attached to the ladle carrying member (8) so as to be movable in the circumferential direction about this axis (C). Support member (1
0), a ladle (12) fixed to the ladle supporting member (10) so that the spout (11) is located near the substantially horizontal axis (C), and a ladle conveying member (8). A5 automatic pouring device for casting equipment, comprising a ladle tilting device (13) for moving a ladle support member (10) against the ladle support member (10).