JPS60166143A - Apparatus for producing ball ingot - Google Patents

Abstract

PURPOSE:To enable production of good ball ingots by disposing circularly plural metallic mold flasks contg. split patterns around a horizontal revolving shaft, revolving and rotating intermittently the flasks and performing pouring and carrying in and out of the metallic molds in prescribed positions. CONSTITUTION:Four metallic mold flasks 14 contg. metallic molds 36... are circularly disposed at the phase of 90 deg. intervals to a horizontal revolving shaft 24. One flask 14 is put in a pouring position A by a revolving device and a molten metal is poured into the molds 36... by a pouring device. The flask 14 is revolved and rotated 90 deg. to a carrying-in and out position B and the molds 36... carried out by a cylinder 16 are opened by an open/shut device 29, by which ingots are discharged. The molds 36... contained again in the flask 14 is revolved and rotated 90 deg. to the blow position and the moisture in the molds 36... is removed by a blowing device. Each of the molds 36... is provided with a sprue and air vent to the spherical cavity consisting of a pair of split patterns. The production of the ball ingots each having a good spherical surface is thus made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention particularly relates to a ball ingot manufacturing apparatus suitable for manufacturing ball ingots (spherical metal lumps) such as A (') having a relatively high freezing point.

BACKGROUND TECHNOLOGY In general, ball ingots can be used to replenish molten tin metal by transfer, which is extremely advantageous compared to replenishing by moving plate-shaped metal blocks without causing stagnation during replenishment. . As the molten metal solidifies inside the mold, its volume contracts outward. Therefore, when pouring molten metal into a spherical cavity formed in the mold from the pouring spout and letting it cool, it is necessary to The shrinkage opening is a drawback that causes poor rolling.

It is known that in order to prevent this, the inner surface of the cavity of the mold can be rotated relative to the molten metal to improve the flow of the molten metal.

For this reason, conventionally, devices have been used that revolve the mold around its revolution axis. For example, JP-A-55-165
As shown in FIG. 1, the device disclosed in No. 257 has a plurality of molds 2 each consisting of a pair of split molds 2a and 2b arranged around the revolution axis in a circular manner, and the molds 2 are disposed at the upper end position (3). The mold 2 is cooled while rotating clockwise in the figure from the upper end position I to the lower end position II, and the two split molds 2a and 2b are separated at the lower end position II. The ball ingot 4 in the mold cavity 3 is opened, and then the split molds 2a and 2b are closed again at the I11 position. By causing the molten metal to revolve before it is completely solidified, the molten metal's circumference is improved and a ball ingot having a substantially spherical outer surface is cast.

However, when casting ball ingots such as Afi, which has a higher solidification point than Zn, etc., after pouring at position 1, the inner surface of the mold cavity is only 180 degrees from the molten metal until position 11. Since there is no relative rotation, and the pouring and ingot discharge operations are performed at the two ends and the bottom end of the mold at respective positions, the time required for counter-rotation becomes longer and the inner surface of the cavity There was a problem in that the molten metal solidified before it was sufficiently circulated, and during solidification, cavities were drawn out to the outer surface, forming cavities.

Purpose of the Invention The purpose of the present invention is to solve the above problems, and
An object of the present invention is to provide a ball ingot manufacturing apparatus capable of manufacturing a ball ingot having a good spherical outer peripheral surface even when the ball ingot has a high freezing point such as I.

2. Structure, operation, and effect of the invention In order to achieve the object described in 2, the first invention rotates (rotates) the mold around its own longitudinal center axis, so that the entire inner circumferential surface of the mold cavity In this process, solidification was started from the surface layer of the molten metal. In other words, the mold used in a rotary ball ingot manufacturing device that manufactures ball ingots by rotating a mold with a spherical cavity is made up of a pair of upper and lower split molds that form a spherical cavity when the mold is closed. , a molten metal inlet communicating with the cavity is formed in the upper split mold, and an air vent hole is formed to communicate the outside of the mold with the cavity, so that the molten metal inlet is held in an upper position during pouring, while pouring After bathing, 1 around the axis of the technique
The structure was such that the molten metal was rotated over its own axis so that the molten metal would cover the entire inner circumferential surface of the cavity.

According to the above configuration, at the same time as the molten metal is poured into the mold cavity, the surface layer of the molten metal that comes into contact with the mold in approximately the lower half of the cavity begins to solidify, and at the same time, a predetermined amount of molten metal is poured into the cavity. As soon as the mold is finished, the mold is rotated around the operator's axis so that the air in the molten metal in the cavity is expelled from the cavity through the air vent hole, so that no air remains on the surface of the molten metal, and then the mold is removed. Since the molten metal in the remaining upper half of the cavity also rotates through one rotation of the mold, solidification starts from the surface layer of the molten metal in contact with the mold in the upper half of the cavity, and the cavities caused by solidification are removed from the cavity. In particular, Ai
Even with metals with high solidification points such as metals, this can be achieved by manufacturing ball ingots with almost no irregularities on the spherical surface.

In addition, in conventional vertically split molds in which the molten metal 1 was divided into two parts on the left and right, the molten metal poured into the cavity from the molten metal spout was
After pouring, the metal immediately contacts the lower end of the cavity formed by the joint of the two molds, causing rapid thermal expansion between the two molds, resulting in sudden thermal stress due to the difference in the coefficient of thermal expansion between the two. let it live,
There were defects in the mold, including cracks and damage. However, if the mold is divided into upper and lower halves and a pouring hole is provided at the upper end of the upper divided mold as in the present invention, the molten metal poured into the cavity from the pouring hole will immediately flow into both sides. Since it does not come into contact with the mating surfaces of the split molds, thermal stress does not occur suddenly as in the case of double molds, which prevents cracks and damage to the molds and extends the JS life of the molds.

Mainly, the second invention is to rotate the mold around its own longitudinal central axis (autorotation) so that solidification of the molten metal starts from the surface layer on the entire inner peripheral surface of the mold cavity. The mold is intermittently rotated (revolution) so as to stop the mold at the molten metal position, the mold unloading position, and the mold loading position.

In other words, a plurality of mold frames for storing a pair of upper and lower split molds in a closed state are rotatable and circularly arranged around the horizontal revolution axis, and all the mold frames are arranged around the revolution axis. a mold frame revolution device that integrally revolves intermittently at constant angles with respect to the center and stops at a pouring position, a mold unloading position, and a mold loading position; A mold frame rotation device consisting of a fixed gear and a fixed gear that is centered on the revolution axis of the revolution device and meshes with each of the gears, A pouring device injects molten metal into the cavity of the mold, and a mold is transported in and out of the mold frame in the longitudinal axis direction at the mold carry-out position and mold carry-in position of the mold frame, respectively. An unloading shilling and a mold loading shilling and a mold loading/unloading device, a cooling device that uses cooling water to cool the mold that is unloaded from the mold frame, and an ingot discharge position for the unloaded mold. A mold opening/closing device that opens to discharge the ingot inside the cavity and closes the ingot discharge section and the mold, and a blowing device that removes moisture inside the mold cavity after discharging the ingot.
It was configured so that it can be used.

According to the above configuration, at the same time as the molten metal is poured into the mold cavity, the surface layer of the molten metal that comes into contact with the mold in substantially the lower half of the cavity begins to solidify, and at the same time, a predetermined amount of molten metal is poured into the cavity. Immediately, the mold frame rotation device rotates the mold together with the mold frame around its longitudinal axis, and the mold frame revolution device moves the mold frame to the mold unloading position, thereby removing the remaining surface of the mold cavity. There is also molten metal in the half,
Since the air inside the cavity is exhausted from the air vent hole to the outside of the mold and circulates around the inner circumferential surface of the cavity due to the rotation of the mold, the molten metal comes into contact with the mold even in the half-way part of the cavity, and almost no air remains. By starting solidification from the surface layer of the solid molten metal and creating a drag hole due to solidification in the spherical center of the cavity, we can create a ball ingot with almost no unevenness on the spherical surface, especially for metals with a high freezing point such as A℃. can be manufactured.

In addition, by storing the mold within the mold frame, the mold can be easily and reliably held in the closed state.
Further, since no special device for closing the mold is required, the structure of the entire manufacturing apparatus can be simplified.

In addition, it is possible to simplify the structure of the revolution part by arranging the ingot discharge part at a location different from the revolution part of the mold frame. Ingots can be reliably discharged, cooling water can be directly injected into the mold for cooling, there is no need to provide a cooling water passage in the mold, and the structure of the mold can be simplified.

Furthermore, since the mold itself moves relative to the mold frame without being fixed, it can be easily replaced.

Still, when working with molten metal by arranging the mold frames in a circle with a phase difference of 90 degrees with respect to the revolution axis, and positioning the mold frame - at the molten metal position, the mold frame in the pond is placed in the metal position. If it is placed in the mold unloading/loading device to carry out mold unloading, cooling, ingot discharge, and loading work, and also performs blowing work, that is, drying the cavity, in the pond mold frame, It is possible to increase the productivity of ingots by -1H.

Also, in the revolution of the mold frame, if the mold take-out position and the mold carry-in position are at the same position, or the molten metal position and the mold carry-in position are set at the same position, the number of stopping positions of the mold frame is reduced.
The structure of the entire device becomes more compact.

In addition, in conventional vertically split molds in which the molten metal spout was divided into left and right halves, the molten metal poured into the cavity from the molten metal spout immediately entered the lower end of the cavity formed by the mating surfaces of both molds. 21. due to the difference in thermal expansion coefficient between the two molds. causing severe thermal stress,
There was a problem with one mold being cracked and damaged. If, as in the present invention, the mold is divided into two knee parts and a pouring hole is provided at the upper end of the upper divided mold, the molten metal poured into the cavity from the pouring hole will be Since it does not come into immediate contact with the mating surfaces of the two split molds, thermal stress does not occur suddenly as described above, which prevents cracking and breakage of the mold and extends the life of the mold.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically explained below based on illustrated embodiments.

The ball ingot manufacturing apparatus according to this embodiment has the following characteristics:
．． As shown in Figure 4, the supporting axis (revolution axis) 2 along the horizontal direction
4 mold frames 1 with different phases at 90 degree intervals
4. The molds 36, . . . , 36 are housed in the molds 36, . At the same time as the mold frame revolution device 10 and the mold frame 14 revolve,
A mold frame rotation device 13 that rotates (rotates) the mold frame 14 around its longitudinal axis integrally with the mold 36 stored therein, and a melting furnace 9 at the pouring position A of the mold frame 14. The molten metal in each cavity 36c of each mold 30 is
The pouring device 12 injects the ingot into the metal, the one that carries out the mold 36 in the circular direction from the mold frame 1 and ↓ at the mold carry-out/carry-in position B of the mold frame 14, and the respective metals from which the ingot 44 is discharged. Type 36
a mold unloading/carrying cylinder 16 for storing the molds in the mold frame 14 at the mold unloading/carrying position) 3; a cooling device 19 for cooling the mold 36 taken out from the mold frame 14; 36
Divided into upper and lower split molds 36a and 36b to form a cavity;
(The spherical ingots 44, . . . , 44 in 6C are discharged from each mold 36, and the upper and lower divided molds 36a are again formed.

361+, and a blowing device 45 for removing moisture from the cavity 36c of each mold 36 after the ingot is discharged. Then, one mold frame 14 is moved to the pouring position A by the mold frame revolution device ().
, each mold 3 in the mold frame is filled with the pouring device 12.
Molten metal is injected into each cavity 36C of 6, and the mold frame 14 is moved from the pouring position A to the mold transport/carry-in position B, which has a phase difference of 90 degrees with respect to 24, on the support shaft by the mold frame revolution device 10. At the same time, the mold frame 14 is rotated one rotation or more by the mold frame rotation device 13, and the mold frame 14 is rotated to the mold carrying-out/loading position I3.
Then, the mold 36 is removed from the mold frame 14 by the mold transport/carry-in cylinder 16. , 36 are carried out, and while each mold 36 is cooled by the cooling device 19, the upper and lower split molds 36a and 36b are separated by the mold opening/closing device 29, respectively, and the ingots 44. ...
, 44 from the mold 36, the mold opening/closing device 29
The mold 36 is closed again, and the mold 36 is moved into the mold frame 14 at the mold unloading/loading position B using the mold unloading/loading cylinder 16.
....

36 is stored, and the mold frame 14 is rotated from the mold unloading/loading position B to the mold cavity drying position C, which is 90 degrees out of phase with respect to the support shaft 24, and at the same time, the mold frame 14 is rotated by the mold frame rotation device 13.
is rotated one or more times, the moisture in the cavity 36c of each mold 36 after the ingot is discharged is removed by the blowing device 45 at the mold cavity drying position C, and then the mold frame 14.14
The ball ingot '1.
=1 , . . . , 44 duplications are made.

The frame revolving device 1 () is placed opposite to the base 111 and the support shaft 2 between the stands 1311 and 100 installed vertically.
4 is rotatably provided, and rectangular plates 24c and 24d are fixed woodenly near the stands at both ends of the support shaft 24, and the rectangular plate 24c is the moon.

Mold frame 1 having a phase difference of 90 degrees between the support axes between 24a
4. . . , 14 are provided so as to be rotatable (spin on their own axis).

In each of the mold frames 14 shown in L, molds 36 are housed while being connected to each other along the axial direction. As shown in FIGS. 5 and 6, this mold 36 includes a pair of 1-upper split molds 36a, 3GI+
Each segmented mold is provided with a large number of hemispherical cavities along the longitudinal direction, and each segment forms a spherical cavity 36c when the mold is closed. At the two ends of this two-part mold 36a, there is a molten metal C]3
6e, and the molten metal inlet 36e and the cavity 3
6c, and is capable of sliding in the longitudinal axis direction with respect to the upper split mold 3Ga.
will be established. Therefore, as shown in FIG. 6(a), the sprue holder 38 is moved relative to the upper split mold 36a, and the communication port 3 is closed.
8a is communicated with the molten metal inlet 36e and the cavity 36c so that molten metal can be poured into the cavity 36c,
As shown in Figure (1)), the sprue foot 38 is attached to the upper split mold
The communication between the cavity 36c and the molten metal inlet 36e is cut off by shifting from the position a, and the cavity 36c is closed to prevent the molten metal from leaking out of the mold. Further, an air vent hole 36f is formed in the vicinity of the molten metal inlet 36e to communicate the inside of the cavity 36c with the outside world of the mold, so that when the mold 36 rotates about its longitudinal axis, the inside of the cavity 36c The air remaining in the cavity 36c is discharged to the outside of the mold by the molten metal, so that no air remains near the inner peripheral surface of the cavity 36c, that is, on the surface layer of the molten metal, and unevenness is prevented from forming on the surface layer.

The mold frame 14 that houses the mold 36 is a substantially rectangular cylinder, and has a molten metal inlet 141+ communicating with the molten metal inlet 36e of the mold 36 on the negative side, and a mold closed state on the inner surface of each side. A roller 40 that guides the mold 36 back and forth in the axial direction.・
..., has 4(). Both ends of this mold frame 14 are rotatably supported by two-piece disks 24c and 24d, respectively. At one end, holes 1 and 1c for carrying the mold 36 are formed between the shaft centers of the piston rod of the mold carrying-out/carrying cylinder 1G] 6a, and at several ends, the mold 36 is carried out/carrying in. A passage 14d is formed.

- Outside the opening 14c of the mold frame 14, the mold frame 1
The hook-shaped protrusion 36g formed on the upper split mold 3Gb of the mold 36 at one end of the mold 36 is made to protrude. This protrusion 3 ((8 is
1. At the carry-out/carry-in hanging position 13, the tip hook part 1 of the piston rod 6a of the mold carry-out/carry-in sill 16 can be engaged with b, and when the mold is carried out, the hook of the piston rod Ga part 161] of the mold 36. ..., 3
6 to move the piston rod 16a out of the mold frame 14 in the right direction in the axial direction of the mold frame in FIG. If it is moved in the left direction, the hook portion 161) will not come into contact with the mating surface of the hook-shaped protruding two-split mold of the second mold 36, so 1. As mentioned above, the life of the mackerel and the mold can be extended by preventing the mold from cracking or breaking without causing sudden thermal stress.

portion 36g and mold 36. ..., 36 are carried into the mold frame 14. 1.1- When carrying out the mold, when pressing the tip end surface of the hook portion 16b of the piston rond 6a of the sill 16 to the end of the mold 36 at one end, the mold 36
The sprue holder 38 protruding from the end is pushed into the mold 36 to communicate the molten metal 1'136e, the communication port 38a, and the inside of the cavity, and the eject pin 34 is inserted into the cavity at the ingot ejection position as described later. It is made so that it can come into contact with the ingot 44.

The mold frame rotation device 13 includes a gear 14a fixed to the outer periphery of one end of the mold frame 14, and the one stand 13.
The gear 14a and the internal teeth 13a mesh with each other to rotate the discs 24c and 24d around the support shaft 24. When rotated, the gear 14a rotates along the internal teeth (fixed gear) 13a, and the mold frame 14 rotates about its axis.

・One end of the above-mentioned support shaft 24 is a -force stand 1311
and a hole 24a at the end thereof that rotates integrally with the support shaft 24 and has a phase difference of 90 degrees.

. . , a rotary plate 241) having 24a is provided.

A boss 2 protruding outward is located at the center of the rotary plate 2.1b.
・4e is provided protrudingly, and a gear 43 is attached to the outer periphery of the boss 24 (・).
The rotary drive plate 43 having a is fitted so as to be relatively rotatable and held so as not to come off. An indexing sill 26 is provided on the outer periphery of the drive plate 43 so as to be approximately perpendicular to the plate surface, and the tip of the piston 07 and 26a of this sill 26 is connected to the tip of the rotary plate 2=41t. It fits into the hole 24a. Further, the gear 43a on the outer periphery of the rotary drive plate 43 meshes with the rank 41 at the tip of the piston 07 of the rotary drive plate drive cylinder 15, which is fixed on the outer surface of one stand 33b along the lower blade direction. . Therefore, when the rack 41 moves up and down within the guide cylinder 42, the rotary drive plate 43 rotates forward and backward at a fixed angle, so that the piston rod 26 of the silling 26
If the tip a is inserted into the hole 24a of the rotary plate 24b, the rotary plate 24, which is rotated by the rotary drive plate 43, also rotates by a certain angle.

A recess 2 recessed in the radial direction is provided on the outer peripheral surface of the rotary plate 24b.
4f is provided, and the tip of the piston rod 27a of the positioning sill 27 fixed to one side of one stand 13b is fitted into the four parts 24f, and the rotary plate 24b is fixed to the stand l'.
13b.

Further, on the outer surface of the other stand 13c, there is provided a sprue presser drive cylinder 25 that is approximately concentric with the axis of the mold frame 14 at the pouring position A, and the cylinder rod tip 25g is
The presser foot 3 passes through the stand 13e and the passage 14cl of the mold frame 14 and comes into contact with the end surface of the sprue footer 38 of the mold 36.
8 into the mold 36, the mold 36 is melted.
! The communication between the A port 36e and the cavity 36c is cut off to close the cavity 36c.

Further, on the outside of the mold frame 14 at the pouring position A, a pouring device 12 is provided on the base 11 via a support plate 47. This pouring device 12 is conventionally known, and has a forward and reverse rotating shaft 50 mounted on a support 48° 48 that stands upright from a support plate 47 that is installed on a base 11 with both stands 13b and 13c open. A rod 49a of an arm rotation cylinder 49 whose both ends are pivotally supported and fixed to the lower part of one of the pillar parts 48 is passed through the pillar part 48 so as to be movable up and down, and a rack 49b is provided thereon, and the rack 49b can be rotated in forward and reverse directions. Pinion 50 fixed to shaft 50
engage a. An arm 51 is fixed to the forward/reverse rotating shaft 50, and a plurality of packets 2 corresponding to each molten metal inlet 36e of the mold 36 are rotatably supported between the tip ends thereof,
A molten metal funnel 52 is fixed so as to form a predetermined angle with respect to the arm 51. This arm 51 is driven by the rack 491), and the Af
It swings between the metal melting furnace 9 such as '' and the mold frame 14 at the pouring position A. The packet 21 is driven by a seventh drive means such as a chain (not shown) provided on the arm 51.
As shown in the figure, when the arm 51 is rotated to a predetermined angle with respect to the arm 51 and moved toward the melting furnace 9 side (position E in Figure 7), the packet 21 is inserted into the molten metal 9a and the packet 21 is inserted into the molten metal 9a. While pouring molten metal into the mold, when the arm 5] moves to the mold frame pouring position A side ([;' position in Fig. 7)
, the molten metal in the packet 21 can be poured into the mold cavity 36c via the pouring funnel 52.

Note that when the pouring funnel 52 is swung together with the arm 51 and the packet 21 is moved toward the melting furnace 9 side, the pouring funnel 52
is located at the upper part of the melting furnace 9, and the oxide film that tends to form in A (4, etc.) is located in the pouring path S in the pouring funnel
2a, the oxide film removal bottle 53 is passed through the pouring passage 52a to discharge the oxide film in the pouring passage 52a into the melting furnace S] to prevent the pouring passage 52a from being blocked.

Further, on the outer surface side of one stand 13b, a mold carrying cylinder 16 is provided approximately concentrically with the longitudinal axis of the mold frame 14 at the mold carrying-out/carrying position B, and the piston rod is moved by the driving of the cylinder 16. 16a is applied to one end surface of the mold 36 through the piston rod through hole 14c at one end of the mold frame so that the mold 36 is pushed out toward the other end in the ring direction of the mold frame 14.

On the base 11 at the other end from which the mold 36 is extruded, there are holders 29a, 291+ of -λ/j and a mold opening/closing sill for driving them. A mold opening/closing device 29 roughly constituted by 18 is provided. tJ
s3, 4.8 (a) As shown in the figure, one fixed holder 2
9]) is fixed to the base 11 side, and the movable holder 29
a is fixed to the piston rod tip 18a of the mold opening/closing sill 18 so as to be able to move toward and away from the fixed holder 29b in the horizontal direction. A pair of holders 29a
, 2 b is the mold unloading/loading position 1 on the opposing inner side.
Four parts 29J that are concentric with and have the same shape as the mold frame 14 in 3.
is formed so that the mold 36 can be fitted and held in a closed frame state.

At this time, each tip engaging portion 29 of each holder 29a, 29b
c is engaged with four parts 36d recessed in each side of the upper and lower split molds 36a and 3Gl+. Both Borgs 29a and 29b mentioned above
A number of cooling water nozzles 22 of the mold cooling device 19 are provided below the closed frame position (ingot discharge position) of the mold cooling device 19, and the mold 36 is held in the holders 29a and 29b, and the movable holder 29a is connected to the fixed holder 29b. Mold 3 by moving it against
6, cooling water is directly sprayed onto the mold 36 from the cooling water pipe 32 through each of the seven nozzles 22 to cool the mold 36. Also, the mounting member 4 on the back side of this movable holder 29a
6 is provided with eject bins 34° .
The upper split mold 36 is inserted into the cavity 36c from the molten sprue 36e of the sprue a through the communication port 38a of the sprue holder 38 and comes into contact with the ingot 44 cast within the cavity.
The ingot 44 is discharged from a. The discharged ingot 44 is transferred to the next process by a chute 35 provided below the closed frame position of the holders 29a, 291+.

Moreover, the blow device 45 is installed in each mold cavity 36c in the mold frame 14 located in the mold cavity drying body 1c.
The nozzle 45 passes through each melt inlet 36e and the communication hole 38a.
Each nozzle 45a is inserted into each cavity 36c to remove the cooling water remaining in the cavity 36c and dry the inside of the cavity 36c.

Now, the manufacturing apparatus according to the above configuration operates as follows, as shown in FIG.

As shown in Fig. 3.4.7, the arm 51 containing the molten metal in the melting furnace 9 in the packet 21 is swung to the arm pouring position F, and the mold is placed in the pouring position. Place the pouring funnel 52 on each melt spout 141J of the frame 14, and press the sprue foot 3.
The molten metal inlet 36e of each mold 36 is connected through the communication hole 32 (a) of 8.
The packet 21 is in communication with the cavity 36C.
The molten metal inside is poured into the cavity 36c through the pouring funnel 52, the mold molten spout 36e, the presser foot 138a, and the hot water.

pouring a predetermined amount of molten metal into the cavity 36c), and the arm 51
is swung in the melting furnace 5) 1111I, and the mold molten metal 1] is driven by the presser driving sill 25 to move the mold 36°...
, 36 in the longitudinal direction to cut off the communication between the mold pouring port 36e and the cavities 36c, and close each cavity 36c.

The molten metal begins to solidify due to the temperature difference with the mold 36 at the same time as it is poured into the cavity 36c.

Next, in the mold frame revolution device 10, the piston rod 27a of the positioning sill 27 is inserted into the recess 2 of the rotating plate 24b.
Rotating plate 24 separated from 4f and attached to stand 13b
Cancel the positioning of b.

Then, the piston rod 2 of the indexing cylinder 26
6a is fitted into the hole 24a of the rotary plate 24b, the rotary drive plate driving sill 15 is driven to rotate, and as the rack 41 is lowered, the rotary plate 241) as well as the rotary drive plate 43 are rotated at a predetermined angle, that is, approximately 90 degrees The rotation axis 24 rotates around the center. Therefore, due to the rotation of the rotary plate 24b, the support shaft 24
Then, the disks 24c and 24d rotate and the mold frame 14 at the molten metal position A is rotated 90 degrees around the spindle axis to the mold carrying-out/carrying-in position B, and then the positioning sill 27 is driven and the rotating plate 24b is rotated. is positioned relative to the stand 131+.

At the same time as the mold frame 14 revolves, the gear 14 of the mold frame 14
Due to the engagement between the mold frame 14 and the internal teeth 13a of the stand 13b, the mold frame 14 rotates about its longitudinal axis together with the mold 36 housed therein.

Therefore, as soon as pouring into the cavity 36c is finished,
Since the mold frame 14 is rotated and revolved, the inner circumferential surface of the cavity 36c rotates relative to the molten metal, and the area around the molten metal is significantly oriented, and the air inside the cavity 36c is also discharged to the outside of the mold. A spherical surface with almost no irregularities can be formed.

Next, at the mold unloading/loading position B, the mold 36. ....

36 in a closed frame state and carried out integrally in the longitudinal axis direction, and a pair of holders 29 in a closed frame state are placed at the ingot discharge position.
a, 29b, and spray cooling water onto each mold 36 from the cooling water nozzle 33 of the cooling device 19 to start cooling each mold 36.

Next, the mold 36. ..., 36 to holder 29a,
29b, that is, each upper split mold 36I) is held by the fixed holder 29b, and iiJ moving holder 29
While each upper split mold 36a is held in position a, each mold 36 is cooled down by the cooling water nozzle 33, and the movable holder 2 is moved relative to the fixed holder 29b by driving the mold opening/closing cylinder 18.
5] Move the two split molds 36a, 3 in the direction of separating them.
Open 6b.

As the movable holder 29a moves, each en-ext pin 34
are each pouring port 36e and sprue holder 38 of the upper split mold 36a.
The ball ingots 44 cast in the cavities 36c are inserted into the respective cavities 36c through the communication holes 38a, and the ball ingots 44 cast in the cavities 36c are respectively inserted into the upper split mold 3 by the eject pins 34.
6a and is transported to the next process while rolling on the chute 35. When all the ball ingots 44 have been discharged from the molds 36, the mold opening/closing cylinder 18 is reversely driven to move the movable holder 29a closer to the fixed holder 29b and close the mold 36.

Next, the mold carry-in/carry-in sill 16 is driven to engage the hook portion 16b of the piston rod 16a with the hook-shaped protrusion 36g of the mold 36, and the movement of the piston rod 16a moves the mold 36. . . , 36 is carried into the mold frame 14 located at the mold carry-out/carry-in position B from the inside of the holders 29a and 29b.

Incidentally, while performing work such as discharging the ingot from the mold 36 in the mold frame 14 indicated by -, in the pouring device 12, the ring 51 is moved to the position E on the melting furnace 9 side. The oxide film inside the pouring funnel 52 is removed, the molten metal is poured into the bucket 21, and the arm 51 is moved to the arm pouring position F again. From around this time, pouring work is performed into the cavity 36c of the mold 36 in the mold frame 14 of the capacity located at the pouring position A.

Next, the mold frame 14 is rotated by the mold frame rotation device 13 and the mold revolves in a state in which each mold cavity 36c located at the mold carry-out/load position B communicates with the molten metal D36e and the communication port 38a. The device 1 ( ) is rotated 90 degrees around the spindle axis and positioned at the mold cavity drying position C.

That is, after the previous revolution of the mold frame 14, while cooling the mold 36 and discharging the ingot, the indexing sill 26 is driven to move the piston rod 26a from the hole 24a of the rotating plate 241J. After separating IBL, the rotary drive plate drive cylinder 15 is reversely driven to move the rack 41.
, and rotate only the rotary drive plate 43 in the opposite direction, then move the piston rod 26a of the indexing cylinder 26 to ``1''.
It is fitted into a hole 24a that is 90 degrees out of phase with the hole 24a of the rotary plate 241). Then, as described above, the mold 36 is placed inside the mold frame 14 by the mold transport/carry-in sill 16.
, . . , 36 are carried in, the rotary drive plate drive cylinder 15 is driven to lower the rack 41, and the rotary drive plate 43 and the rotary plate 24b are carried in, so that the mold is carried out.
Move the mold frame 14 at carry-in position B to mold cavity drying position C*
It revolves around the axis of the support shaft 24 by 90 degrees.

In this mold cavity drying device C, the /glue 45a of the blowing device 45 is inserted into the cavity 36c from the pouring port 36e of the mold 36 by driving the drive cylinder 45b, and compressed air is applied to the inner circumferential surface of the cavity 36c. The cooling water remaining on the inner peripheral surface of the cavity is removed by spraying to prevent an explosion caused by water evaporation (see Figure 4).

Next, the mold frame 14 located at the mold cavity drying position C is rotated by the mold frame rotation device 13 and rotated 90 degrees around the spindle axis by the mold frame revolution device 10, and then placed at the rest position. Thereafter, the mold frame 14 is similarly rotated and revolved around the spindle axis to be positioned at the pouring position A.

Note that when pouring work is performed at the pouring position A in 1., the mold 36. ....

36 is carried out from the mold frame 14, the ingot is discharged, and the ingot is carried into the mold frame 14 again.
At the mold cavity drying position C, the inside of each cavity 36c of each mold 36 is dried.

In the manner described above, ball ingots 44 are successively manufactured in large quantities. In addition, between each work, when performing the next work at the same time as the end of the work, the LS in Figure 9
As shown in , the work is carried out sequentially after the end of the work is detected by a limit switch or the like.

According to Embodiment 1, when the molten metal is poured into the cavity 36c of the mold 36 at the pouring position A of the mold frame 14, the surface layer of the molten metal begins to solidify in approximately the lower half of the cavity, and the cavity 36c starts to solidify. As soon as the molten metal is poured into the cavity 36c, the mold frame 14 is rotated around its longitudinal axis to exhaust the air inside the cavity 36c to the outside of the mold and fill the remaining upper half of the cavity 36c with molten metal. As the ingot 36 rotates sufficiently and solidification starts from the surface layer, the entire outer peripheral surface of the molten metal solidifies first, and then the unsolidified molten metal solidifies in the central part as it rotates due to the rotation of the ingot 36. During production, a spherical ingot with almost no irregularities on the outer spherical surface is produced.

In addition, the mold frame 14. ..., 14 to 9 to the support shaft 24
() The mold frame 14 is arranged circularly so that the antiphase is different, and the - mold frame 14
is placed at molten metal position A to perform pouring work, and the pond mold frame 14 is placed at mold unloading/loading position B and each mold 36 is unloaded, cooled, ingot discharged, and loaded. ,
Furthermore, since the inside of each cavity 36C of the pond mold frame 14 is dried at the mold cavity drying position C, the productivity of the ingots 44 can be improved.

In addition, a mold 36. ..., 36, it is possible to easily and reliably hold each mold 36 in the closed state, and since there is no need for special equipment for closing the molds, the structure is fully capable of manufacturing equipment. Simplified.

In addition, by arranging the ingot ejection part at a different location in the direction of the revolution axis than the revolution part of the mold frame 14, it is possible to simplify the structure of the revolution part, and the space for ingot ejection is Each mold (6) can be reliably discharged with the opening and closing of
6 can be directly injected with cooling water for -ζ cooling, there is no need to provide a cooling water passage in the mold, and the structure of the mold can be simplified.

Moreover, each mold 36 is not fixed to the apparatus, but moves from the mold frame 1.1 to the holder 29a, 2! Since it is moved to a container, it is easy to replace it.

In addition, in conventional vertically split molds in which the molten metal 1 was divided into two parts on the left and right, the molten metal poured into the cavity from the molten metal inlet immediately entered the lower end of the cavity formed by the mating surfaces of both molds. contact with the molds, causing rapid thermal expansion between the two molds, causing rapid thermal stress due to the difference in thermal expansion coefficient between the two molds, and causing problems such as cracks and damage to the molds. Ta. However, as in this embodiment, if the mold 36 is divided into upper and lower parts and the pouring port 36e is provided at the upper end of the upper divided mold 36a, the molten metal poured into the cavity 36C from the pouring port 36e can be does not immediately contact the mating surfaces of the two split molds 36a and 36b, so thermal stress does not occur suddenly as described above, and the mold 36 is prevented from cracking or being damaged.
The life of the mold 36 can be extended.

It should be noted that the present invention is not limited to the present example, but may be implemented in various forms. For example, the fixed teeth 13a that mesh with the gear 4a of the mold frame 14 are not limited to internal teeth,
The external teeth may be fixed near the support portion like a sun gear, and the gear 14a of the mold frame 14 may be meshed around the sun gear as a planetary gear.

In addition, the number of mold frames 14 is not limited to four as described above, but
As shown in Fig. 10.11.12, a total of two mold frames 14.14 are arranged around the support shaft 24 at intervals of about 180 degrees, and the - mold frames 14 at the l\'' position When performing the molten metal work, the ingot discharge work and the mold cavity drying work may be performed in the mold frame 14 of the pond at position B.

In this embodiment, the mold frame 14 is moved from the molten metal position A' to
1 around the spindle axis until the loading and ingot discharging position B
The mold frame 14 is made to rotate one or more rotations around its longitudinal axis while revolving 80 degrees. In this embodiment, the mold transport/carry-in cylinder 16 is composed of two cylinders. That is, in FIG. 10, 16' is a mold carrying cylinder, and the mold 36 in the mold frame 14 is moved by the drive of its piston rod 16'a. . . , 36 is carried out, and the sprue presser 38 is placed in the mold 36 . . . , is pushed into 36 to connect the molten metal inlet 36e and the communication hole 38a. Reference numeral 17 denotes the mold loading cylinder, which is installed on both stands 13b and 13C parallel to the axis and in response to the external force of the mold frame 14 at the mold loading/unloading position B, and has a bracket 17b at the tip of its piston rod 17a. A mold press rod 17c is provided coaxially with the mold 36 via the press rod 17c. is pressed against the mold frame side, and the mold 36 is housed in the mold frame 14 at the mold carry-out/load position B. Therefore, one of the holders 2911 has a groove 29e for moving the bracket 17+ which supports the pressing rod 17c.
will be established.

Further, as shown in FIG. 13, the mold 36 is held in the holder 29a.
, 29b to perform the mold opening/closing and ingot ejection work, and then the mold is transported to the opposite side in the longitudinal axis direction of the mold from the mold frame revolution device 10 by the mold carrying-out cylinder 16, and then transferred to the holder 2.
The mold 36 is held in a closed state in the mold transport holder frame 55 from 9a and 29b, and the mold 36 is guided along the holder frame 55 by the guide roller 56 on its lower surface while the longitudinal axis of the mold is moved by the drive cylinder 57. Then, the mold frame 14, from which the mold 36 was carried out at the mold carry-out/load position B', is moved 180 degrees to the molten metal position A' by the mold frame revolution device 10. The holder frame 55 is placed into the mold frame 14 by the drive of the mold carrying cylinder 58.
Alternatively, the mold 36 may be carried in while being guided by the guide rollers 56, and the mold cavity may be dried and then the pouring work may be performed. If this is done, the mold 36 will be removed by cooling it sufficiently. The basic structure of the mold opening/closing device 29' in this embodiment is substantially the same as that of the mold opening/closing device 29 according to the previous embodiment, but the pouring port 36e of each mold 36 is
Since the ingot is oriented in the direction of force ejecting, which causes inconvenience in ejecting the ingot, when performing ingot ejection work, the 14th
After holding the mold 36 in the holders 29a and 29b as shown in FIG. Member 46 and fixed side holder 291
) is rotated 90 degrees around the hinge axis 46a, and then the movable holder 29a is moved relative to the fixed holder 29b,
The mold 36 is opened and closed and the ingot is discharged.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of the main part of a conventional ball ingot manufacturing device, and FIG. ．． 3.4 shows a partially cutaway plan view, right side view, and left side view of a ball ingot manufacturing apparatus according to an embodiment of the present invention, and FIG. 5 shows a mold frame and a mold in a state where the mold is housed. A vertical cross-sectional side view of the mold, and FIGS. 6(a) and 6(b) are a partial vertical cross-sectional front view of the mold and mold frame, and a mold molten metal inlet, respectively, showing a state in which the mold molten metal and the cavity are in communication. FIG. 7 is an explanatory diagram showing the operation of the arm of the pouring device, and FIG. An explanatory diagram showing the operation of the opening/closing device, FIG. 8(b) is a partially cutaway front view of the above manufacturing apparatus showing the blowing device, FIG. The figures are a plan view, a side view, and an operation explanatory diagram of the device according to the embodiment of the pond, respectively, FIG. 13 is a perspective view of the device according to another embodiment, and FIGS. 14(a) and (b).
) are explanatory diagrams showing the operation of the ingot discharge device shown in No. 131ffl. 4... Melting furnace, 10... Mold frame revolution device, 12...
・Pouring device, 13...Mold frame rotation device, 13a...
Internal teeth, 14...Mold frame, 1.1a...Gear, 16.
... Mold carrying cylinder, 17.58... Mold carrying cylinder, 11]... Cooling device, 29... Mold opening/closing device, 36... Mold, 36C... Cavity, 44.・
・Ball ingot, 45... blowing device. Patent Applicant Tokai Rika Densei Seisakusho Co., Ltd. Patent Attorney Aoyama Baka 2 Figure 14 (o) Figure 84 (b) Procedural Amendment May 7, 1985 Patent Application No. 020364, 1988 2. Name of the invention: Device for manufacturing ball ingots 3. Relationship with the person making the amendment Patent applicant address: 11, Toyo I, Oaza, 1-1 Tsukihabe Dai, Aichi Prefecture Letter 'l', f
No. 11] [14 Agent 5, Date of amendment order 1 Voluntary 7, Contents of amendment 1, The following parts of the description are corrected. (1) On page 15, lines 5 and 6, the words ``rectangular plate'' have been corrected to ``disc''. (2) From page 17, line 20 to page 18, line 2, delete "Both sides...can be stretched." (3) On page 22, line 15, the phrase "mold unloading cylinder" has been corrected to "mold unloading/loading cylinder." (4) In the first line of page 24, the text "Cooling water pipe 32" should be corrected to "Cooling water pipe 33." (5) On page 27, line 14.200, "Cooling water nozzle 33" should be corrected to "Cooling water nozzle 32." (6) On page 38, line 19, ``4...melting furnace'' has been corrected to ``9...melting furnace.'' 2. In the drawings, Figure 2 and Figure 8 (a) have been corrected as shown in the attached sheet. I”d

Claims (2)

[Claims] (1) A mold for manufacturing ball ingots by rotating a mold with a spherical cavity A mold used in a rotary ball ingot manufacturing device is used to form a spherical cavity when the mold is closed. The upper split mold is formed with a molten metal inlet that communicates with the cavity described in "2" and an air vent that communicates the outside of the mold with the cavity, so that when pouring, the molten metal location described in "2" is formed. Bow: (A mold for manufacturing ball ingots, which is held at q and rotated one or more rotations around the longitudinal axis after pouring, so that the molten metal spreads over the entire inner circumferential surface of the cavity. . (2) Forming a spherical cavity in the closed state of the mold. Consisting of a pair of lower split molds, - the upper split mold is formed with a molten metal inlet that communicates with the cavity, and the outside of the mold is communicated with the cavity. A mold rotary ball ingot manufacturing device for manufacturing ball ingots by rotating a mold formed with an air vent hole, and a mold for storing a mold consisting of a pair of upper and lower split molds in a closed state. A plurality of molds are rotatably arranged and supported in a circular manner around the horizontal revolution axis, and all the mold frames integrally revolve intermittently at constant angles around the revolution axis to reach the pouring position, a mold frame revolution device configured to stop at a mold carry-out position and a mold carry-in position, respectively; a gear fixed to one end of each of the mold frames; a mold frame rotation device consisting of a fixed gear meshing with each gear; a pouring device for injecting molten metal into a cavity of a mold in the mold frame at a pouring position of the mold frame; and the mold A mold loading/unloading device for loading and unloading the mold in the longitudinal direction of the mold frame at the mold loading and unloading positions of the frame, and a cooling water a cooling device that cools the unloaded mold at the ingot discharge position, a mold opening/closing device that opens the ingot in the cavity to discharge the ingot inside the cavity, and closes the mold after discharging the ingot;
1. A ball ingot manufacturing device comprising: a blowing device for removing moisture in a cavity of a subsequent mold.