JPH0127822B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a pouring device for casting, for example, an insulator cap.

(Prior art) As shown in Japanese Utility Model Application Publication No. 54-29112, a conventional pouring device includes a front plate and an arcuate back plate between fan-shaped side plates on both sides to form a ladle body. A ladle with a pouring spout provided at the top of the front side plate is supported so as to be tiltable around the fan-shaped center of the fan-shaped side plates on both sides, and is pulled by a wire rope provided along the back side of the arcuate back side plate. However, since the wire rope is directly connected to the lower part of the arcuate back plate of the ladle, this ladle can be replaced with another ladle of a different capacity. In such cases, it is essential to attach and detach the bearing part of the ladle and the wire rope mentioned above.
It is not easy to replace the ladle, and it cannot be done if the ladle is heated to a high temperature.

On the other hand, the ladle disclosed in Japanese Patent Application Laid-Open No. 138532/1982 is detachably mounted on the upper side of a rocking table which rotates about a rotation axis.

(Problem to be Solved by the Invention) However, since the removable ladle itself does not have a tilting support shaft, it is difficult to position the pouring spout of this ladle at an accurate position, and this attachment Every time the pot is replaced, it is necessary to position it on the rocking table and fix it. In addition, since the ladle is directly attached and detached, if it is necessary to replace the hot ladle, a wire or the like must be directly connected to the hot ladle, resulting in a lack of safety.

The purpose of the present invention is to make it possible to easily and safely attach, detach, and replace the ladle.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides device body frames 42 to 48, 5
Ladle support frames 54-58, 71 on 1-53
is removably provided, and this ladle support frame 54~
A ladle 75 is provided inside 58, 71, and this ladle 7
5 is provided with a front side plate 82 and an arcuate back side plate 83 between fan-shaped side plates 81 on both sides to form a ladle main body 84, and a pouring port 85 at the upper part of the front side plate 82.
The fan-shaped center portions of the fan-shaped side plates 81 on both sides are rotatably supported on the ladle support frames 54 to 58, 71 by tilting support shafts 76, 77, and the arc-shaped back side plates 83 are rotatably supported. The ladle 75 is horizontally supported within the ladle support frames 54 to 58, 71 by engaging the stopper 87 provided in the ladle support frame 55 from above so as to be able to move toward and away from the ladle support frame 55. A separate fan-shaped drive plate 9 is located parallel to the fan-shaped side plate 81 of 75 and tilts the ladle 75.
2 is rotatably provided on the device main body frames 42 to 48, 51 to 53 by a pivot shaft 91, and at least two positioning pins 61, By positioning the ladle support frames 54 to 58, 71 by means of 72, the tilting support shaft 7 of the ladle 75 is
6, 77 and the rotary support shaft 91 of the fan-shaped drive plate 92 are positioned coaxially, and an engagement member 93 is provided on the fan-shaped drive plate 92 that is freely engageable and detachable from below with respect to the engagement member 94 on the ladle side. A linear member 99 for traction is disposed on the arcuate surface of the fan-shaped drive plate 92 in an arc shape concentric with the arcuate back plate 83 of the ladle 75, and one end of this linear member 99 is connected to the arcuate surface of the fan-shaped drive plate 92. This pouring device is connected to the lower part of the drive plate 92, and the other end of the linear member 99 is connected to a tension drive mechanism 103.

(Function) In the present invention, when the linear member 99 is pulled by the tension drive mechanism 103, the fan-shaped drive plate 92 is rotated at an angle proportional to the amount of direct actuation thereof, and the fan-shaped drive plate 92 engages the linear member 99. Ladle 75 via members 93 and 94
are tilted about the tilting support shafts 76 and 77, and the ladle 75 is tilted at an angular velocity proportional to the linear operating speed of the tension drive mechanism 103. When replacing the ladle 75 with another one, wires or the like are hung around the ladle support frames 54 to 58, 71 that integrally support the ladle 75 by the tilting shafts 76, 77 and the stopper 87. When the ladle 75 is removed from the mounting body frames 42-48, 51-53 by lifting the ladle 75, the ladle support frames 54-
58, 71 to the device main frame 42 to 48, 51
~ 53, and both are placed on the positioning pins 61, 72.
All you need to do is position it by.

(Example) Next, an example of the present invention will be described based on the drawings.

As shown in FIG. 1, along the mold transfer device 1, a core retracting section 2, a pouring section 3, a folding section 4, a sprue bar folding section 5, a first cleaning section 6, a second cleaning section, etc. A dry blowing section 7, a dry blowing section 8, a coating mold section 9 and a cooling section 11 are provided in this order.

In the core holding section 2, the socket core 13 and the cementing core 14 are inserted into the mold 12, as shown in FIGS. 2 and 3, and in the pouring section 3, the Molten metal is poured into the sprue 15 of the cementing core 14, and this molten metal is
It passes through the weir 16 at the lower part of the sprue 15, passes through the thin wall portion 17, enters the connecting portion 18, passes through the skirt portion 19, passes through the weir 21, reaches the riser 22, and furthermore, the concave portion 23 on the upper surface of the cementing core 14. It overflows. In addition, in the frying and folding section 4, the cooled and solidified frying feeder 22 is broken off from the dam 21,
In the sprue rod folding section 5, the sprue rod 24 inside the sprue 15, which has been cooled and solidified, is broken off from the weir port 16, and before that, in the first cleaning section 6, the cores 13, 14 and the castings are taken out. Empty mold 1
Clean the inside of 2 with a wire brush, and
In the cleaning section 7, the inside of the mold 12 is further cleaned with sandplast, and in the dry blowing section 8,
Cleaning sand is removed by blowing air into the inside of the mold 12, and the mold coating section 9 applies a coating material to the inside of the mold 12. Cool down to a predetermined temperature. Note that the cooling is facilitated by the fins 25 provided on the outer surface of the mold 12.

Furthermore, the skirt portion 1 of the casting is taken out from the mold 12 at the position where the mold transfer device 1 rotates downward.
The waste material 26 on the outer periphery of the opening end of 9 is removed in a tapered shape by cutting to complete the insulator cap 27 shown in FIG. 28 is porcelain, and 29 is a pin that fits into the connecting portion 18 on the other side. Note that a through hole 31 is bored in the lower part of the socket core 13 to the outside, and gas is vented and the contents of the mold 12 are ejected through this through hole 31.

Now, in the pouring section 3, as shown in FIGS. 5 to 7, a column-shaped fixed frame 31 is installed upright, and the upper end side surface and the lower end side surface of this fixed frame 32 are rotatable. Bearing 3 that rotatably fits and supports the upper end shaft 34 and lower end shaft 35 of the frame 33
6 and 37, and a thrust bearing 38 supporting the vertical load of the lower end shaft 35 on the lower end side surface.
and its support portion 39 are provided.

In addition, the lower end portion of the rotating frame 33 and the lower end shaft 3
A lower rotating arm 41 is interposed between the lower rotating arm 41 and support members 42 and 4.
3, 44, 45, 46, 47, and 48 are fixed.
The support members 42, 43 stand vertically from the rotating arm, and the support members 44, 45, 46 are fixed to the upper ends of the support members 42, 43 in a U-shape with a front opening. the above-mentioned support member 4
7 is erected, the support member 48 is fixed to the upper end of the support member 47, the cylinder support frame 49 is fixed to the support member 46, and the support member 4
Support members 51, 52, 53 fixed to the support members 8, 49 are provided at parallel intervals on the sides of the support members 46, 47, 48.

The supporting members 42 to 48 and 51 to 53 form an apparatus main body frame.

Support members 54, 55, 56, which are detachably supported by the support members 44, 45, 48,
57 and 58 are provided integrally. The support member 54 is supported on the support member 44, and the support member 54 is supported on the support member 44.
6, 57, and 58 are supported at one end by the support member 45 and at the other end by the support member 48 via a support plate 59. One end of the support plate 59 is fixed to the support member 58, and the lower surface of the other end of the support plate 59 is provided with the support member 58.
A positioning pin 61 that fits into a small hole on the top 8 is provided in a protruding manner.

In addition, the upper end portion of the rotating frame 33 and the upper end shaft 3
An upper rotating arm 62 is interposed between the upper rotating arm 62, a reducer support frame 63 is fixed to the lower surface of the upper rotating arm 62, and a cyclo reducer 64 is fixed to this support frame 63. 64 output screw shaft 65
The upper part 67 of the support frame 66 is screwed onto the support frame 6.
A support member 71 is attached to the lower part 68 of 6 via a support plate 69.
Attach. One end of the support plate 69 is fixed to the support member 71, and a positioning pin 72 that is fitted into a small hole in the lower part 68 of the support frame 66 projects from the lower surface of the other end of the support plate 69. .

The support members 54 to 58, 71 form a ladle support frame, and the ladle support frame is provided with hanging parts 106, 107, 108, 109.

Further, bearings 7 are provided on the lower surfaces of the support members 58 and 71.
3 and 74 are fixed to each other, and this bearing 7
3, 74 are tilting support shafts 76, 77 on both sides of the ladle 75.
Insert. Note that the bearings 73 and 74 are those in which the bearing portion is spherically fitted to the fixed outer frame portion,
The tilting movement of the tilting support shafts 76, 77 is allowed by the rotation of the bearing portion relative to the fixed outer frame portion. Further, so that the tilting shafts 76, 77 can be tilted only in the vertical direction, guide plates 78, 79 having elongated holes in the vertical direction are inserted into the support members 5 on both sides.
8, 71, and guide plates 7 on both sides thereof.
Tilting shafts 7 on both sides are installed in the long holes in the vertical direction of 8 and 79.
6 and 77 are fitted.

In addition, the ladle 75 has a front plate 82 and an arcuate back plate 83 between the fan-shaped side plates 81 on both sides to form a ladle body 84, and the upper part of the front plate 82 accommodates two molds. Two pouring ports 85,
86, and the tilting support shafts 76, 77 extend from the fan-shaped center of the fan-shaped side plates 81 on both sides.
to protrude.

Further, an angle member 87 as a stopper is fixed to the upper end of the arcuate back plate 83, and the lower surface of the angle member 87 is engaged with the upper surface of the support member 55, so that the ladle 75 is fixed to the support member 55. 76,7
7 to prevent it from rotating downward under its own weight.

Further, bearings 8 are provided on the lower surfaces of the support members 45 and 53.
8 and 89 are fixed, and a fan-shaped drive plate 92 that engages with the ladle 75 is rotatably supported by a rotation support shaft 91 supported by the bearings 88 and 89. Note that the rotation support shaft 91 is arranged concentrically with the tilt support shafts 76 and 77 on both sides. Further, a locking plate 93 as one engaging member is fixed to the upper part of the side surface of the ladle of the fan-shaped drive plate 92, and above the locking plate 93, the upper part of one of the fan-shaped side plates 81 of the ladle main body 84 is fixed. A locking rod 94 as the other engaging member is provided protruding from the locking plate 93, and the locking plate 93 and the locking rod 94 are engaged with each other.

Further, a pair of bearings 95 is fixed to the upper end of the cylinder support frame 49, and a support shaft 9 is provided between the pair of bearings 95.
6, a sprocket wheel 97 is rotatably installed, and one end of a chain 99, which is a linear member that tilts while pulling the ladle 74, is attached to a mounting portion 98 at the lower end of the fan-shaped drive plate 92. The chain 99 is connected to the arcuate circumferential surface 101 of the fan-shaped drive plate 92 which is concentric with the arcuate back plate 83 of the ladle 75.
The chain 99 is stretched upward along the sprocket foil 97, and the other end of the chain 99 hangs downward, and the other end of the chain 99 is stretched through a connector 102 that can be adjusted for expansion and contraction. A cylinder body 104 of a hydraulic cylinder device 103 is connected as a drive mechanism, the open end of this cylinder body 104 is directed downward, and the tip of a piston rod 105 of this hydraulic cylinder device 103 is pivoted to the lower end of a cylinder support frame 49. do. By providing the open end of the cylinder body 104 of the hydraulic cylinder device 103 facing downward, the cylinder body 1
The seal between the piston rod 105 and the piston rod 105 is prevented from getting into the seal, and the seal can be reliably protected.

In addition, in FIG. 5, the cylinder support frame 4 is
9 and the hydraulic cylinder device 103 are omitted from illustration.

Next, the operation of this embodiment will be explained.

First, ladle 7 of various sizes depending on the size of the mold.
5 and install it before starting work. Note that this ladle 75 is attached to the support members 54, 5 in advance.
5, 56, 57, 58, 71, and this supporting member 54, 55, 56, 57, 5
8, 71 hanging parts 106, 107, 108, 10
9 with a wire or the like, attach this supporting member together.

When the mold 12 as shown in FIGS. 2 and 3 is positioned in front of the ladle 75 and stopped, this is detected by a limit switch or the like, and the hydraulic power source circuit of the hydraulic cylinder device 103 is detected. The solenoid valve or the like is operated to supply pressure oil to the lower part of the cylinder body 104, and the cylinder body 10
4 is lowered, and the fan-shaped drive plate 9 is moved through the chain 99.
2 is rotated upward about the support shaft 91, and the ladle main body 84, which is engaged with the locking plate 92 of this fan-shaped drive plate 92 via the locking rod 94, is rotated upward about the tilting support shafts 76 and 77. and pours the molten metal in the ladle main body 84 from the two pouring ports 85 and 86 into the sprues 15 of the two corresponding molds 12 in front of it. Further, pressure oil is supplied to the upper part of the cylinder body 104 to rotate the ladle body 84 downward.

At this time, as shown in FIG. 8, the pouring flow rate is increased at _t1 until the sprue 15 is filled with molten metal, and then the molten metal flows from the sprue 15 to the thin wall portion 17, the connecting portion 18, and the skirt portion 19. is squeezed by the weir 16, and according to the squeezing resistance, the molten metal is kept at a relatively low and constant rate until the molten metal becomes the riser ₂₂ and overflows to the outside, and when it overflows, the molten metal is poured. Stop.

The flow rate of the poured molten metal is adjusted by expanding and contracting the hydraulic cylinder device 103. i.e. time t ₁
In the range of time t2, the cylinder body 104 is rapidly lowered and then slightly raised again, and in the range of time _t2 , the cylinder body 104 is lowered relatively slowly at a constant speed, and finally returned to the upper position rapidly. let Note that the above cylinder body 10
4 is lowered at a constant speed, the ladle 75 rotates upward at a constant speed, and since the ladle 75 has an arc shape centered on the support shafts 76 and 77, a constant flow rate of molten metal can be obtained. .

The expansion and contraction of the hydraulic cylinder device 103 is controlled by a hydraulic control circuit formed by combining various switching valves, throttle resistors, and the like.

In addition, the two molds 12 are simultaneously poured with the two pouring ports 85 and 86 of the ladle 75, but the two
When the capacities of the two molds 12 are equal, the molten metal flows out from the two pouring holes 85 and 86 in exactly the same way, and when the capacities of the two molds 12 have a certain ratio, the two pouring holes are made to flow out equally. The molten metal is made to flow out from the sprues 85 and 86 at a constant ratio. However, the opening areas of the pouring ports 85 and 86 tend to change depending on the mass of the molten metal, and the balance between the left and right pouring flow rates is likely to be lost.

Therefore, for example, if the opening area of the right pouring port 86 is narrowed, the corresponding right mold 12
The timing when the riser 22 of the core 14 overflows into the recess 23 on the upper surface of the core 14 and the mold 12 on the left side
There is a difference between the timing when the riser 22 of the core 14 overflows into the recess 23 on the upper surface of the core 14,
Since the speed on the right side is slower than on the left side, if you set a non-contact temperature measuring device such as a radiation thermometer with the standard facing the recess 23 of the core 14 on the left and right sides, this temperature measuring device First, open the recess 23 on the left side.
The molten metal in the recess 23 on the right side is sensed, and the molten metal in the right recess 23 is then sensed, and the order and time interval of this left and right sensing are electrically compared and
The output screw shaft 65 of the reducer 64 is moved to the support frame 6.
6 rotates upward, and the tilting shaft 77 on the left side of the ladle 75, which is attached to the support frame 66 via the support plate 69, etc., is placed in a state where the desired flow rate of molten metal is poured from the left and right pouring ports 85, 86. As mentioned above, the molten metal flows out equally from the two pouring ports 85 and 86, or at a constant ratio.

For example, if the opening area of the left pouring spout 85 is narrowed, the cyclo reducer 64 is reversely driven for a predetermined period of time to lower the left tilting support shaft 77 of the ladle 75.

In addition, the ladle 75 is supported by the supporting members 54, 55, 5.
6, 57, 58, 71, or when emptying the molten metal inside the ladle 75, move the rotating frame 33 and the rotating arm 41 integrated therewith with the shafts 34, 35. It rotates as a fulcrum in a direction away from the mold transfer device 1 to perform the above operations.

In addition, in FIG. 6, 111 is a funnel used when pouring metal.

In addition, it is best to provide two pouring ports 85 and 86 of the ladle 75 as in the above embodiment in order to accurately adjust the balance of the pouring flow rate on the left and right sides. If you think about it, three or more pouring ports may be provided depending on the number of molds such as the metal mold 12, or if multiple sprues are provided in the same mold, pouring ports corresponding to the number of sprues may be provided. good.

Although a metal mold 12 is shown as an example, such a mold may be a sand mold.

Further, a wire or the like may be used in addition to the chain 99 as the linear member.

In addition to the screw shaft 65, a fluid pressure cylinder device, a wire winding and rewinding device using a motor, etc. may be used as a means for vertically moving the tilting support shafts 76, 77 of the ladle 75.

〔Effect of the invention〕

According to the present invention, the ladle is not directly attached to and detached from the device body frame, but the ladle support frame that integrally supports the ladle is attached to and detached from the mounting body frame. By attaching a wire or the like to the support frame and removing the ladle support frame from the apparatus main body frame using a crane or the like, the ladle integrated with the ladle support frame can be easily replaced. And when exchanging it,
The tilting support shaft of the ladle and the rotation support shaft of the fan-shaped drive plate can be easily positioned on the same axis by at least two positioning pins, and the ladle support frame can be easily positioned on the same axis by the positioning pins. The ladle support frame can be easily fixed by simply positioning it on the frame, and there is no need to fix the ladle, so the ladle replacement workability is excellent. In addition, the ladle support frame that supports the ladle via the tilting shaft and stopper does not get very hot even when the ladle is in a high temperature state, so it is safe to hang a wire, etc. to this ladle support frame. Can perform ladle replacement work. Although the ladle can be easily replaced by attaching and detaching the ladle support frame to the fan-shaped drive plate, the effect of the fan-shaped drive plate driven by the linear member (pulling the ladle) It has the advantage of being able to tilt at an angle proportional to the amount of linear movement of the mechanism.

[Brief explanation of drawings]

The figures relate to the present invention: Figure 1 is a schematic diagram of the mold transfer device, Figure 2 is a partially cutaway front view of the mold, Figure 3 is a plan view of the mold, and Figure 4 is the finished product. 5 is a front view showing an embodiment of the pouring device, FIG. 6 is a side view thereof, and FIG. 7 is a plan view thereof.
FIG. 8 is a graph showing the effect. 42-48, 51-53...Device main body frame, 54-58, 71...Ladle support frame, 6
1, 72...Positioning pin, 75...Ladle, 7
6, 77... Tilting support shaft, 81... Fan-shaped side plate, 82
...Front side plate, 83...Circular back side plate, 84...Ladle body, 85, 86...Pouring spout, 87...Angle material as a stopper, 91...Rotation shaft, 92
. . . sector-shaped drive plate, 93, 94 . . . locking plate and locking rod as engaging members, 99 . . . chain as a linear member, 103 .

Claims (1)

[Claims] 1. A ladle support frame is removably provided on the device main body frame, a ladle is provided inside this ladle support frame, and this ladle is provided with a front side plate and an arcuate back side plate between fan-shaped side plates on both sides. a ladle main body is formed, and a pouring port is provided at the upper part of the front side plate, and the fan-shaped center of the fan-shaped side plates on both sides is rotatably supported on the ladle support frame by a tilting support shaft. At the same time, a stopper provided on the arcuate back side plate is engaged with the ladle support frame from above in a manner that allows the ladle to be horizontally supported within the ladle support frame. Separate fan-shaped drive plates that are located parallel to the side plates and tilt the ladle are rotatably provided on the apparatus main body frame by rotational shafts, and at least two separate fan-shaped drive plates are provided on the apparatus main frame. By positioning the ladle support frame with the positioning pin, the tilting support shaft of the ladle and the rotation support shaft of the fan-shaped drive plate are positioned on the same axis, and the fan-shaped drive plate is placed on the ladle side. An engaging member is provided that can be freely engaged and detached from the lower side of the engaging member, and a linear member for traction is arranged in an arc concentric with the arc-shaped back plate of the ladle on the arc-shaped surface of the fan-shaped drive plate. ,
A pouring device characterized in that one end of the linear member is connected to a lower portion of the fan-shaped drive plate, and the other end of the linear member is connected to a tension drive mechanism.