JPH0471773A - Casting apparatus - Google Patents

Abstract

PURPOSE:To enable automatic change of the desired ladle without depending on crane, etc., by preparing plural ladles having different capacities at side part of traverse line and changing to the ladle at pouring carriage side. CONSTITUTION:Casting lines 2A, 2B are extended to Y direction from holding furnaces 1A, 1B for molten metal. The pouring carriage 3 holds the ladle 5 as fittable/detachable and run on the line 2 and molten metal is poured in the mold 4. The ladles 5A, 5B having different capacities, are waited to a ladle change waiting parts 7A, 7B. The pouring carriage 3 runs the traverse line 6, and comes to the desired waiting part 7, and the existent ladle 5 is automatically changed to the desired ladle 5 with a ladle changing means and the pouring carriage is run to the traverse line 6 and the casting line 2, and the molten metal is received at the holding furnace 1, and poured into the mold 4. The automatic change of ladles can be executed and the molten metal can be poured at the other casting line during taking out the casting.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a casting apparatus equipped with a pouring truck for pouring metal into a mold in a casting line.

Conventional technology Generally, in casting equipment, a ladle held on a pouring cart is
It is necessary to replace it with one with a different capacity depending on the mold on the casting line.

In such cases, conventionally, a crane was set up near the casting line, and an operator operated the crane to replace the ladle.

Problems to be Solved by the Invention In conventional casting equipment, replacing the ladle in the pouring truck was done manually by relying on a crane, which not only resulted in poor work efficiency but also required a great deal of labor.
This had a negative impact on the productivity of the entire casting process.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a casting apparatus that can automate the ladle replacement work and contribute to improving casting productivity.

Means for Solving the Problems In order to achieve the above object, the present invention provides a system between a plurality of casting lines that receives molten metal and pours it into a mold using a pouring cart in which a ladle is removably held. A transverse line for the pouring cart is provided that crosses these lines, and a ladle exchange waiting area in which a plurality of ladles with different capacities is prepared is provided on the side of the transverse line, so that the pouring cart on the transverse line Ladle changing means for exchanging the ladle on the pouring cart side and the ladle in the ladle changing waiting section at a position facing the ladle changing waiting section is provided on the pouring cart side and the ladle changing waiting section side. It is something.

According to the present invention having such a configuration, if the pouring cart is moved to a predetermined position on the transverse line that crosses a plurality of casting lines, the ladle in the ladle exchange standby section and the pouring cart are removed. The ladle and the ladle can be automatically exchanged by the ladle exchange means, and by selecting one of the plurality of casting lines, the pouring cart can be operated efficiently, and overall casting productivity can be improved.

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows a schematic diagram of the entire casting apparatus, and in the figure, 1 (IA, IB) is a holding furnace for molten metal. In order to cast the molten metal from this holding furnace 1, the mold arrangement direction (
A plurality of casting lines 2 (2A), for example, two casting lines, extend along the arrow Y direction).

2B) is set. 3 receives the molten metal and moves it to a mold 4 (4A) in the casting line 2.

4B), and a ladle 5 for receiving molten metal is detachably held therein.

Reference numeral 6 indicates a pouring cart transverse line provided along the direction of arrow X so as to cross between the casting lines 2A and 2B;
is a ladle exchange standby section provided on the side of the above-mentioned transverse line 6, in which a plurality of ladles 5 (5A, 5B) with different capacities are installed.
is available. The pouring cart 3 and the ladle exchange standby section 7 are provided with ladle exchange means, which will be described later.

Next, the configuration of the pouring cart 3 and its traveling system will be specifically explained.

In FIGS. 2 to 4, reference numeral 21 denotes a traverse rail laid along the traverse line 6 of the pouring cart 3, and 22 (2
2A, 22B) are running rails laid along the casting line 2, and the running rails 22 are arranged at a higher level than the traversing rails 21.

Reference numeral 23 denotes a traversing cart for the pouring cart 3, which has a pair of front and rear wheels 24 for traveling on the traversing rail 21.
24A, 24B) are attached. 25 is a rack laid along the above-mentioned traverse rail 21, and 26 is a pinion that meshes with the above-mentioned rack 25. 27 is a hydraulic motor for rotationally driving the pinion 26;
5, pinion 26, etc. (FIG. 5), 29 is disposed along the traversing rail 21 to determine the connection position with the traveling rail 22 and the ladle exchange standby section 7. This is a pin for positioning the traversing cart 23 at a position opposite to the traversing cart 23 (see FIG. 6). Reference numeral 31 is a guide member fixed to the traversing cart 23 and brought into rolling contact with the pin 29. 32 (32A, 32B) are stopper portions fixed to both longitudinal ends of the traverse rail 21.

A rail portion 22a constituting a part of the traveling rail 22 is fixed on the upper surface of the traversing truck 23, and the pouring truck 3 is connected to the traversing truck 2 via this rail portion 22a.
It is designed to be installed on top of 3.

7 to 9, 33A and 33B are the upper and lower frames of the pouring cart 3, respectively;
A pair of front and rear wheels 34 (34A, 34B) running on the rails 22 are pivotally supported on the lower frame 33B. Reference numeral 35 designates an elevation drive mechanism installed in the lower frame 33B, which includes, for example, a motor 36, a reduction gear @37 that reduces the rotation of the motor 36, and a reduction gear @37 connected to the output side of the reduction gear 37 via a coupling 39. Bevel gear mechanism 39 and jar two-wheel drive shaft 40 (40A
, 40B), etc.

The frame 33A is equipped with a ladle tilting mechanism 41 and the like. The configuration of this ladle tilting mechanism 41 will be explained below with reference to FIGS. 1O to 13.

In the same figure, a pair of left and right fixed frames 42.43 are erected on top of the upper frame 33A.
A ladle tilting frame 46, 47, which is integrated with a connecting member 45 and removably supports the ladle 5, is suspended from the rotation shaft 44 which is pivotally supported by the ladle 43. The ladle 5 is the 14th ladle.
As shown in the figure and FIG. 15, they have different capacities, and are integrally fixed to a bracket 48 on the bottom surface of common dimensions. ).

The upper end of the tilting frame 46.47 has a box shape into which the front boss portion 50 is fitted as is when the ladle 5 is carried in from the front along the horizontal plane and set at a predetermined position between the two 46.47. A horizontal groove portion 51 is formed, and further,
A semicircular support groove 52 for supporting the rear support shaft 49 is formed on the rear side thereof. 53 is the support groove portion 52
This is an L-shaped regulating member fixed to the tilting frame 46, 47 in accordance with the above, and prevents the rear support shaft 49 fitted into the support groove 52 from jumping up when it suddenly stops during tilting. is being prevented.

Reference numeral 54 designates an actuator, such as a hydraulic cylinder, for tilting the ladle 5 via the tilting frames 46 and 47, the base end 54a of which is rotatably supported by a mounting piece 55 on the upper frame 33A side, and the tip end The portion 54b is rotatably connected to a connecting piece 56 fixed to the outer surface of the one tilting frame 46. This hydraulic cylinder 54 has a flow control valve 5 whose opening and closing are controlled by a controller 57.
8 are connected. Reference numeral 59 denotes ladle tilting angle detecting means, such as an encoder, which detects the rotating angle of the rotating shaft 44 of the tilting frame 46, 47 and inputs the detected value to the controller 57 as a comparing means. 60 is a personal computer that inputs a tilting speed value for the ladle tilting angle to the controller 57 as a set value. The controller 57 controls the flow rate control valve 58 so that the ladle tilting speed is high at the initial stage and becomes low thereafter.
The opening degree is controlled in two steps.

In addition, in FIGS. 11 and 12, 61 (61A
, 61B), and 62 (62A, 62B) are side guides fixed to the fixed frames 42 and 43, respectively, to guide the lower end of the bracket 48 of the ladle 5.

A ladle changing device 63 is provided in the pouring cart 3 and the ladle changing standby section 7. The exchange mechanism 63A on the pouring cart 3 side of this device 63 is shown in FIGS. 16 and 17.
This will be explained with a diagram.

In the same figure, 64 is a roller mounting base, 65 (65A, 6
5B) is a large number of conveyance rollers arranged on the roller mounting base 64 in two rows on the left and right along the traveling direction (Y direction).

For each row of conveyance rollers 65, the roller mounting base 64
The rotational force of a motor 67 attached to the shaft is transmitted via sprockets 68 and 69, a chain mechanism 70, and the like. Reference numerals 71 and 72 refer to a pair of left and right guide plates 73 disposed along the arrangement direction of the conveyance rollers 65;
．． Reference numeral 74 denotes a stop/pa part that positions the loading of the ladle 5 on the front side in the loading direction. Reference numeral 75 denotes a clamp member that is rotatably supported in the vertical direction via a support shaft 76 at the entrance end of the roller mounting base 64 and is driven by a cylinder device 77. The side bracket 48 is sandwiched between the stopper portions 73 and 74 from the front and rear in the carrying direction.

Reference numeral 78 denotes a load cell for measuring the weight of the ladle, which is disposed below the roller mounting base 64, and is configured to discriminate between ladle 5 of different capacity based on the output of this load cell 78.

The ladle exchange standby section 7 has two ladle exchange mechanisms 6 corresponding to two types of ladle 5A, 5B with different capacities.
3B and 63B are arranged.

The structure of this part is shown in FIGS. 18 and 19.

In the same figure, 79 is a base plate for supporting the roller.

80 (80A, 80B) are a large number of conveyance rollers arranged in two rows on the left and right along the Y direction, and are set at the same height level as the conveyance roller 65 on the pouring cart 3 side. The rotational force of a motor 81 attached to a base plate 79 is transmitted to each row of conveyance rollers 80 via sprockets 82, chains 83, and the like.

84 (84A, 84B) are guide plates fixed to the base plate 79 along the arrangement direction of the conveyance rollers 65.

Note that, as shown in FIG. 20, a rail 85 extending in the X direction is fixed on the upper frame 33A of the pouring truck 3, and a hopper 86 for pouring the metal is provided on the rail 85. A hopper moving cart 87 is mounted via running wheels 88 .

Next, the operation of the above configuration will be explained.

Assume that the pouring cart 3 is now on the casting line 2A.

After receiving the molten metal from the holding furnace 1 into the ladle 5 of the pouring truck 3, the pouring truck 3 travels on the rail 22A and moves toward the mold 4A.

The pouring cart 3 is stopped at a position corresponding to the mold 4A, and the pouring process begins.

When entering this pouring step, the ladle tilting mechanism 41 is operated. That is, if the hydraulic cylinder 54 shown in FIG. 10 is operated to rotate the tilting frame 46, 47 clockwise together with the rotation shaft 44, the ladle 5 will also be moved from the one-dot chain line position to the rotation ring 44. Rotate clockwise. The molten metal in the ladle 5 is poured into the mold 4A via the hopper 86 until the ladle 5 rotates to the maximum tilting position shown by the two-dot chain line.

When the ladle 5 is tilted, the encoder 59 detects the amount of rotation of the rotation shaft 44, so that the controller 57
The tilting angle corresponding to the amount of rotation is input into . The controller 57 compares the tilting angle setting value from the personal computer 60 with the above input value, and controls the flow rate control valve 58 so that the opening degree is large in the initial state until the predetermined tilting angle is reached. If the specified angle is exceeded,
The opening degree of the flow rate control valve 58 is controlled to be small. As a result, the tilting of the ladle 5 is fast in the initial state, and becomes slow when the tilting angle exceeds a predetermined tilting angle.

As a result, the molten metal in the ladle 5 is also quickly poured into the mold 4A at first.

Since the two-speed control can be performed automatically by simply inputting set values into the personal computer 60, the product yield can be improved.

Once the above pouring process is finished, wait for the casting to cool down and then mold 4.
Start the extraction process from A. Here, two casting lines 2
A, 2B, and since the traverse line 6 of the pouring cart 3 is provided between both casting lines 2A and 2B, the traversing line 6 of the pouring cart 3 is provided between the two casting lines 2A and 2B. Using the line 6, it is possible to transfer to the other casting line 2B and perform pouring work. That is, during the work of removing castings from one casting line, the pouring cart 3 is moved to the other casting line 2B.
This makes it easier to streamline and automate the casting process.

By the way, there are cases where it is desired to replace the ladle 5 mounted on the pouring cart 3 with one of a different capacity. The procedure for replacing the ladle 5 is as follows.

It is now assumed that the pouring truck 3 carrying the small-capacity ladle 5 is on the casting line 2A.

The two-wheel drive mechanism 100 is driven to move the pouring cart 3 to the traverse line connection position (FIG. 2).

In this position, the pouring cart 3 is placed on the traversing cart 23 as shown in FIGS. 3 to N45. When the hydraulic motor 27 is driven to rotate the pinion 26, the pouring cart 3 travels on the traversing rail 21 via the traversing cart 23.

The one-pouring trolley 3 together with the traversing trolley 23 is in the ladle exchange standby section 7
When reaching the position corresponding to , the driving of the hydraulic motor 27 is stopped and the traversing trolley 23 is stopped. At this time, the traversing cart 23 is positioned by the pin 29 that contacts the guide member 31 and is prevented from shifting.

The ladle changing device 63 is operated in the above position. first,
The clamp member 75 is rotated counterclockwise by the cylinder device 77 on the pouring cart 3 side shown in FIG. 17 to release the clamping state from the bracket 48 on the ladle 5 side, and then the motor 67 is driven. When the conveyance roller 64 on the roller mounting base 64 is rotated, the ladle 5 is moved to its bracket 4.
8 and are carried out from the pouring cart 3 side to the rear.

On the other hand, the exchange standby 63B on the ladle receiving side in the ladle exchange standby section 7 is operated. That is, drive the motor 81,
Rotate the conveyance roller 80. The ladle 5 carried out from the pouring cart 3 side is conveyed by the conveying roller 80 and set in the standby position in the horizontal direction.

Next, after making the pouring cart 3 face the other exchanging mechanism 63B of the ladle exchange standby section 7, the conveying roller 80 of this exchanging mechanism 63B and the conveying roller 64 on the pouring truck 3 side are moved in the opposite direction. Rotate. The waiting ladle 5 is its bladder 2
It is conveyed by the conveyance roller 64 together with the pouring cart 48, and set as it is from the horizontal direction by the conveying roller 64 on the pouring cart 3 side to the setting position on the pouring cart 3 side. In this state, if the cylinder device 77 is driven to rotate the clamp member 75 clockwise, the bracket 48 on the ladle 5 side will be sandwiched between the clamp member 75 and the stopper portions 73 and 74 from the front and back. It will be worn.

Since a load cell 78 is disposed below the roller mounting base 64, the weight of the ladle 5 can be measured by the load cell 78 when the ladle 5 is set. That is, based on this weight value, it can be determined whether the replaced ladle 5 has the desired capacity.

In this way, the ladle 5 of the pouring cart 3 is removably attached and can be automatically replaced with one of a different capacity, eliminating the uneconomical need to set up a casting line for each of different capacities, and improving production. Efficiency can also be improved.

When the ladle 5 is horizontally moved from the ladle exchange standby section 7 and carried into the pouring cart 3, the rear support shaft portion 49 of the ladle 5
Since the front boss portion 50 is fitted into the support groove portion 52 and the horizontal groove portion 51 of the tilting frames 46 and 47 of the ladle tilting mechanism 41, the configuration for transporting the ladle 5 can be simplified. It can also be quickly attached to and detached from the hot water trolley 3.

Incidentally, in the ladle 5, the rear support shaft portion 49 and the front boss portion 50 are fitted into the support groove portion 52 and the lateral groove portion 51 of the support plate 46, 47 of the ladle tilting mechanism 41, respectively, as shown in FIG. Therefore, if the ladle tilting mechanism 41 suddenly stops during tilting, the reaction will cause the ladle 5 to
tries to jump upwards. However, the tilting frame 46
．． 47 is provided with a regulating member 53 for the back-up support shaft 49, which prevents the ladle 5 from jumping up excessively, thereby preventing hot water from spilling due to the ladle tipping over. can.

Effects of the Invention As described above, according to the present invention, a ladle exchange standby section in which a plurality of ladles with different capacities are prepared is provided on the side of a transverse line that crosses a plurality of casting lines, and Since a ladle exchange means is provided on the ladle exchange standby section side of the pouring cart, it is possible to automatically exchange the desired ladle without relying on a crane etc. The casting line can run the pouring cart at full capacity, increasing production efficiency and significantly reducing labor.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the overall configuration of a casting device according to an embodiment of the present invention, and FIGS. 2 and 3 are detailed illustrations of the arrangement of a casting line, a traverse line, and a ladle exchange standby section, respectively, in the same device. Fig. 4 is a side view showing the pouring cart at the connection position of the casting line and the traversing line;
Fig. 5 is a side view of the drive section of the traversing cart on which the pouring cart is mounted, Fig. 6 is an explanatory diagram of the positioning guide section of the traversing cart, and Figs. 7, 8, and 9 are respectively for pouring molten metal. Side view, half-cut top view and rear view showing the lifting/lowering drive means of the trolley, 1st O
The figure is a configuration diagram showing the ladle tilting mechanism in the pouring cart.
1, 12, and 13 are a top view, a half-cut front view, and a side view showing the ladle tilting mechanism, and FIGS. 14 and 15 are a side view and a plan view, respectively, showing the ladle. 17 and 17 are a plan view and a side view, respectively, showing the ladle exchange mechanism in the pouring cart, and FIGS. 18 and 19 are a plan view and a side view, respectively, showing the ladle exchange mechanism on the side of the ladle exchange standby section. , FIG. 20 is a side view showing the hopper in the pouring truck and its moving truck. 2 (2A, 2B)...Casting line, 3...Pouring truck, 5 (5A, 5B)...Ladle, 6...Transverse line, 7...Ladle exchange standby section, 63 (63A, 6
3B)...Ladle exchange means.

Claims (1)

[Claims] (1) A transverse line for pouring carts is provided that crosses between multiple casting lines that receive molten metal and pour it into molds using pouring carts with removably held ladles; A ladle exchange standby section where a plurality of ladles with different capacities are prepared is provided on the side of the line, and the ladle on the pouring cart side is placed at a position where the pouring cart on the above-mentioned transverse line faces the ladle exchange standby section. A casting device characterized in that a ladle exchange means for exchanging the ladle and the ladle in the ladle exchange standby section is provided on the pouring cart side and the ladle exchange standby section side.