JPH0128668B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention is applicable to molds in a mold row that are continuously or intermittently transported, such as molds for automobile bodies (particularly chassis and engine molds) that are continuously transported along a predetermined casting line. etc.) or a ladle tilting type pouring machine used for pouring into each mold of that part.

<Prior Art> FIG. 1 schematically shows an example of this type of conventional ladle tilting type pouring machine. In the figure, 1 indicates a row of molds 2 that are continuously or intermittently conveyed in the direction of arrow X. The ladle tilting type pouring machine 3 consists of a pair of ladle 5a, 5b arranged mirror-symmetrically on a four-wheeled steel cart 4, and rails 6, laid approximately parallel to the mold row 1, 6, so that it can run freely.
Driven by a travel motor 7 mounted inside the trolley 4, the trolley 4 reciprocates in the direction of the mold row (direction of arrow Y). The ladle 5a, 5b is a fan-shaped container when viewed from the front, as shown in FIG. The casting ports 9a and 9b at the tips are positioned near the top of the mold row 1.
The inner surfaces of the casting cylinders 8a, 8b are tapered, and the casting ports 9a, 9b are formed into narrow openings. Also,
The ladles 5a and 5b are rotatably supported at their front and rear sides via ladle receiving rollers 10, respectively, and are driven by tilting motors 11 and 11 connected to their rotation shafts. As a result, the ladles 5a and 5b are tilted in the directions of arrows A and B, as shown in FIGS. 2a and 2b.

Therefore, in order to pour the molten metal contained in the ladle from the molten metal receptacle 12 on the upper part of the ladle into the mold 2 to be poured, first, the pouring machine 3 is moved in the direction of the mold row, and The casting ports 9a and 9b at the tip of the mold 2
The molten metal inside the ladles 5a, 5b is poured into the pouring tubes 8a, 5b by tilting the ladles 5a, 5b in the directions of arrows A and B.
8b, and poured into the sprue 13 of the mold 2 to be poured through the pouring ports 9a and 9b.

The conventional pouring machine as described above has the following drawbacks.

(a) First, this is a pouring machine that moves the entire pouring machine 3 back and forth on rails 6, 6 to adjust the pouring position. Therefore, a large installation space is required. Furthermore, it is equipped with a reciprocating mechanism, resulting in a complex structure and large-sized device.

(b) Next, the conventional pouring machine is a device that adjusts the pouring position by moving a heavy pouring machine weighing 2 to 30 tons back and forth. For this reason, precise position adjustment is difficult and requires a lot of time.

(c) In addition, in conventional pouring machines, the position of the ladle is often adjusted by running the ladle just before pouring. For this reason, the surface of the molten metal in the ladle is generally rough and undulating, and often has large waves. Therefore, rapid momentum tends to occur in the flow of the molten metal during pouring. Therefore, not only is it difficult to pour a constant amount of molten metal because the amount of molten metal poured varies easily, but also
Since the pouring metal falls from a high position to the sprue in a parabolic manner, the molten metal tends to splash or spill near the sprue. Furthermore, a phenomenon such as so-called sand-inclusion, in which sand from the mold gets mixed into the casting, may occur, leading to product defects.

(d) Moreover, since the conventional pouring machine has a long casting cylinder, it is difficult to drain the hot water at the pouring opening, and the responsiveness of pouring is poor. Further, if slag or the like adheres to the inside of the casting cylinder, it is difficult to remove the slag or the like.

(E) Furthermore, since conventional pouring machines are devices that pour molten metal by moving the ladle to a predetermined position for each mold, it is difficult to replenish molten metal to the ladle when the casting line is operating. It becomes necessary to move the ladle, and in order to ensure reliable and stable replenishment, it is necessary to stop the operation of the casting line.

<Objective of the Invention> The present invention has been made in order to eliminate the above-mentioned drawbacks.The purpose of the present invention is to reduce the installation space, to quickly and accurately adjust the pouring position, and to achieve smoother To provide a ladle tilting type pouring machine which enables smooth pouring, excellent responsiveness, and smooth replenishment of molten metal.

<Structure of the Invention> The ladle tilting type pouring machine according to the present invention is a pouring machine for pouring metal into each mold in a mold row that is continuously or intermittently conveyed, and the ladle tilting type pouring machine is provided near the mold row and is tiltable. The installed ladle and the gutter for pouring the molten metal from the ladle into the sprue of the casting mold, which is formed to extend from at least the vicinity of the lower part of the casting spout of the ladle to the vicinity of the upper part of the mold row. , a gutter with a spout provided at a predetermined position on the bottom of the mold side, and a frame that receives the gutter, and a gutter holder that is swingably supported on the ladle side and attached to the mold side so as to be movable in the mold row direction. It consists of a frame and a reciprocating mechanism that reciprocates the gutter receiver frame in the direction of the mold row, and by driving the gutter receiver frame, the spout of the gutter can be moved and adjusted to a pouring position above the sprue of the mold. It is characterized by the fact that

<Example> Embodiments of the present invention will be described below with reference to the drawings.

The ladle tilting type pouring machine 3' of the embodiment shown in FIGS. 3 and 4 has a pair of ladle 5'a, 5'b.
, a substantially V-shaped gutter 14 in front of the ladle, and the gutter 1
4, a reciprocating mechanism 16, etc. The ladle 5'a, 5' is a short ladle with casting cylinders 8'a, 8'b at the tip thereof, and is installed mirror-symmetrically on the floor near the mold row. Further, like the conventional ladle described above, it is provided with tilting motors 11, 11, ladle receiving rollers 10, 10, etc., and the ladles 5'a, 5'b are similarly attached so as to be tiltable. Further, the gutter 14 is a gutter for flowing the molten metal from the ladle into the sprue of the mold to be poured, and is located near the lower part of the pouring ports 9a, 9b of the respective ladle 5'a, 5'b. It is formed to extend near the upper part of the mold row, that is, to the upper part of the sprue of the mold 2 to be poured, and has a substantially V-shape. with gutter 1
4 is provided with a spout 17 at a position directly above the sprue 13 of the mold 2 on the bottom of the mold side. Further, the gutter 14 described above is placed on a gutter support frame 15 having a substantially triangular frame shape. The gutter 14 is not limited to being placed, but may be supported by the gutter support frame 15. The gutter support frame 15 is an extended shaft portion on the ladle side, and is swingably supported by a bearing 18, and is attached to the gutter moving rail 19 via a roller 20 at the end on the mold side, and extends in the mold row direction. It is movable. The mold side end of the frame 15 is connected to a reciprocating mechanism 16, that is, to a gutter moving motor 24 via a chain 21 provided along a rail 19 and a sprocket 23 attached to a motor shaft 22. It is possible to reciprocate in the column direction. The reciprocating mechanism that reciprocates the gutter support frame in the mold row direction is not limited to this.

Therefore, by reciprocating the gutter receiving frame 15 in the direction of the mold row, the spout 17 of the gutter 14 is moved to a predetermined pouring position, that is, the sprue 13 of the mold 2 to be poured.
It can be adjusted so that it is located directly above the
Then, by tilting the ladle 5'a, 5'b with such position adjustment, the molten metal in the ladle flows into the gutter 14 from the pouring ports 9a, 9b, and the molten metal flows into the gutter 14 at the bottom of the mold side. The molten metal is poured into the sprue 13 of the mold 2 through the pouring spout 17 to produce a desired casting. In this case, by installing two ladles,
When the molten metal in one ladle becomes empty, it can be poured from the other ladle that has been prepared in advance, making continuous pouring possible and requiring that the transport of the mold be stopped. There is no. In this way, by arranging a plurality of ladles and forming a gutter that extends from the side end of the mold to near the bottom of the pouring port of each ladle, it is possible to alternately pour metal from a plurality of ladles. Become.

In short, the pouring machine 3' of Example 1 has a gutter that can be moved and adjusted to a predetermined pouring position between the ladle and the mold, and pours the molten metal from the ladle into the gutter. It has the following advantages.

(A) First, this pouring machine 3' does not require the ladle to be moved back and forth in the direction of the mold rows to adjust the pouring position, and is a so-called stationary ladle type. Therefore, only a small installation space is required. In addition, there is no need for a reciprocating mechanism, making the structure simpler and the device more compact. Therefore, it can be manufactured at a lower cost than conventional pouring machines, leading to a reduction in capital investment.

(b) Next, the pouring machine 3' is a device that adjusts the pouring position by reciprocating a gutter, which is much lighter in weight than a ladle. Therefore, it has become possible to perform position adjustment accurately and quickly. As a result, in casting mold 2, the casting cycle was shortened by about 0.5 seconds, and the manufacturing speed of the casting was improved.

(c) In addition, in the pouring machine 3' of the embodiment, the ladle 5'
Since a and 5'b are stationary without reciprocating,
The surface of the molten metal in the ladle is generally calm and does not ripple significantly. Therefore, when pouring the molten metal from the ladle into the gutter 14, unnecessary momentum is unlikely to be generated in the flow of the molten metal, and even if it were to occur, most of the momentum is weakened within the gutter 14 and almost canceled out. Therefore, molten metal splashing or spilling near the sprue almost never occurs even if the mold sprue is shallow, and as a result, phenomena such as sand engraving are less likely to occur, and product defects due to this are rare. becomes. In particular, in the case of the embodiment, as shown in FIG. 4, the pouring spout 17 is formed in a vertical direction so that the molten metal is poured almost vertically into the sprue 13 of the mold, making it even more difficult for hot water to spill. . Furthermore, since the pouring flow becomes gentle and smooth pouring becomes possible in this way, the amount of pouring metal into each mold can be kept almost constant with almost no variation.

(d) Furthermore, the pouring machine 3' has a gutter 14 that constitutes the main part of the molten metal passage from the inside of the ladle to the sprue of the mold, so that the length of the pouring cylinder of the ladle is shorter than that of a conventional pouring machine. It is significantly shortened compared to Therefore, the hot water drains well at the pouring spout, and the responsiveness of pouring is excellent. Furthermore, since the casting tube is relatively short, even if slag or the like adheres to it, it is easy to remove it.

(E) Furthermore, since the pouring machine 3' of the embodiment is a device that pours molten metal by moving the gutter while leaving the ladle in place, it is difficult to replenish molten metal to the ladle during operation of the casting line. , replenishment can be made without moving the ladle, making replenishment of molten metal even smoother.

Moreover, FIG. 5 shows a ladle tilting type pouring machine of Example 2. In this embodiment 2, the gutter receiver frame 1
5' has a substantially rectangular frame shape to receive the elongated gutter 14', and the bearing 18 at the center of swing that supports the gutter receiving frame 15' is attached to the gutter moving rail 25.
The gutter support frame 15' is movable in the direction of the mold row, and is connected to a motor 28 via a chain 26 and a sprocket 27 along the rail 25. It is designed to move back and forth. The other configurations are the same as in the first embodiment. Therefore,
In the pouring machine 3'' of this embodiment, the gutter receiver frame 1
By reciprocating the swing center of the mold 5' in the direction of the mold row, it is possible to alternately pour the metal from the ladles 5'a and 5'b.

Moreover, FIG. 6 and FIG. 7 show the ladle tilting type pouring machine of Example 3. In addition to the pouring machine 3' of the first embodiment, this pouring machine 3 includes a position detector 29 for detecting the sprue position of the mold to be poured;
9 is provided with a detector interlocking mechanism 30 that reciprocates. In more detail, a small hole position detection piece 31 (seventh hole) is formed in advance on the mold surface opposite to the ladle at a location corresponding to the sprue 13.
The position detector 29 (e.g., photoelectric switch, proximity switch, etc.) that detects the
By attaching it to 2 via the roller 33,
The detector 29 is movable in the mold row direction, and is connected to the gutter moving motor 24 of the reciprocating mechanism 16 via a chain 34 provided along a rail 32 and a sprocket 35 attached to the motor shaft 22. By connecting, the detector 29 can be reciprocated in the direction of the mold row, and at the same time, the gutter receiver frame 15 can be reciprocated in conjunction with the detector 29. In this case, the tooth ratio n ₂₃ /n ₃₅ of the sprocket 23 on the gutter side and the sprocket 35 on the detector side, which are coaxially attached, is adjusted to n ₂₃ /n ₃₅ =A/B. Here, A and B are the sixth
As shown in the figure, these are the distance between the swing center of the bearing 18 and the gutter moving rail 19, and the distance between the swing center of the bearing 18 and the spout 17 of the gutter 14.

In addition, when the detector 29 detects the piece 31 during conveyance of the mold 2, the interlocking mechanism 3
0 rotates the motor 24 to move the detector 29 forward following the conveyance of the mold (at this time, the gutter support frame 15 moves forward in conjunction), and conversely, the detector 29 moves forward following the conveyance of the mold. When the piece 31 is not detected, the motor 24 is reversed by the operating circuit, and the detector 29 is moved backward until the piece 31 is detected (at this time, the gutter support frame 15 is interlocked and moved backward). do).

Therefore, the gutter receiver frame 15 is connected to the detector 29
The pouring spout 17 of the gutter 14 according to the position detection by
is guided so that it reaches the pouring position above the sprue of the mold 2, and is automatically adjusted so that it always occupies the same pouring position. That is, the pouring machine 3 is a pouring machine whose pouring position is automatically adjusted. Therefore, in the case of the third embodiment, the number of workers involved in the pouring machine can be further reduced.

<Effects of the Invention> As explained above, the ladle tilting type pouring machine of the present invention has a gutter provided between the ladle and the mold, and the gutter is movable back and forth in the mold row direction, so that the pouring port of the gutter is By using a pouring machine that can be moved and adjusted to a predetermined pouring position, the installation space is significantly reduced, the pouring position can be adjusted quickly and with high precision, and pouring is smooth and responsive. , it has advantages such as smooth replenishment of molten metal.

[Brief explanation of drawings]

Figure 1 is a plan view showing the installed state of an example of a conventional ladle tilting type pouring machine, Figures 2a and b are front views showing each ladle of the pouring machine shown in Figure 1, and Figure 3. 4 is a plan view showing the installation state of the ladle tilting type pouring machine of Embodiment 1 of the present invention, FIG. 4 is a side view showing the installation state of the pouring machine of Embodiment 1 of FIG. 3, and FIG. A plan view showing the main parts of the ladle tilting type pouring machine according to the second embodiment of the present invention installed, and Fig. 6 is a plan view showing the main parts of the ladle tilting type pouring machine according to the third embodiment of the present invention installed. FIG. 7 is a side view showing the installed state of the pouring machine shown in FIG. 6. In the figure, 1...Mold row, 2...Mold, 3', 3'',
3... Ladle tilting type pouring machine, 5'a, 5'b...
Ladle, 9a, 9b... Casting port, 13... Sprue,
14, 14'... Gutter, 15, 15'... Gutter receiver frame, 16... Reciprocating mechanism, 17... Pour spout, 29
...Position detector, 30...Detector interlocking mechanism.

Claims (1)

[Scope of Claims] 1. A pouring machine for pouring metal into each mold in a mold row that is continuously or intermittently conveyed, a ladle that is tiltably installed in the vicinity of the mold row, and a ladle that is tiltable from the ladle. A gutter for pouring molten metal into the sprue of the mold, and is formed so as to extend from at least near the bottom of the spout of the ladle to near the top of the mold row, and the spout is placed at a predetermined position on the bottom of the side of the mold. The provided gutter and the frame that receives the gutter are swingably supported on the ladle side, and the gutter receiving frame is attached to the mold side so as to be movable in the mold row direction. The ladle tilting type pouring mechanism is comprised of a reciprocating mechanism for reciprocating the gutter support frame, and the pouring spout of the gutter can be moved and adjusted to a pouring position above the sprue of the mold by driving the gutter support frame. Hot water machine. 2. Claim 1, characterized in that a plurality of ladles are arranged, and a gutter is provided extending from the end of the mold row to near the bottom of the casting port of each of the ladles.
Ladle tilting type pouring machine as described in section. 3. Ladle tilting according to claim 1, characterized in that a plurality of ladles are arranged and the swing center of the gutter support frame on the ladle side is movable in the direction in which the ladles are arranged. Type pouring machine. 4. In a pouring machine for pouring metal into each mold in a mold row that is continuously or intermittently conveyed, a ladle is installed near the mold row and can be tilted, and the molten metal from the ladle is poured into the mold. A gutter for pouring into the sprue, which is formed to extend from at least the vicinity of the lower part of the pouring port of the ladle to the vicinity of the upper part of the mold row, and has a spout provided at a predetermined position on the bottom of the side of the mold; A frame for receiving the gutter, which is swingably supported on the ladle side and attached to the mold side so as to be movable in the mold row direction; a reciprocating mechanism that allows the pouring spout of the mold to be moved and adjusted to a pouring position above the sprue of the mold; a position detector that detects the sprue position of the mold to be poured;
The detector is movable in the mold row direction, and the detector is reciprocated to follow the conveyance of the mold, and the gutter receiving frame is reciprocated in conjunction with the movement of the detector. and a detector interlocking mechanism connected to the gutter, and the gutter receiver frame is guided so that the spout of the gutter is positioned at a predetermined pouring position in response to detection by the detector. A ladle tilting type pouring machine featuring the following.