JPH05337632A - Tilting casting machine - Google Patents

Abstract

PURPOSE:To improve safety by eliminating any mechanical interference to a worker in a tilting casting machine. CONSTITUTION:This machine is provided with a drag driving means 23 for taking out the drag 13 arranged in a tilting frame 12 to non-tilting side from the inside of the tilting frame 12 and a pot driving means 33 for swinging the pot 16 for supplying molten metal. The core setting work in the drag 13 and the product taking out work can be executed from the outside of the tilting frame 12 at the non-tilting side, and the solid residue of the molten metal stuck to the bottom part of the pot is automatically stripped off by forced swinging.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a tilt type casting machine in which a required amount of molten metal is temporarily stored in a pot and the pot is tilted together with a mold to pour the molten metal into the mold.

[0002]

2. Description of the Related Art A tilting casting machine uses a laminar flow of molten metal during the return of the mold from an inclined state to an upright state in order to avoid the inclusion of air due to turbulent flow when the molten metal is poured into the mold. It was designed to do. As shown in FIG. 7, a tilting caster of this type conventionally has a support frame 2 attached to both arch-shaped legs (not shown) of a fixed frame 1 and a mold and a pot 3 integrated with the mold. A tilting frame 4 provided with is attached to the support shaft 2. The tilting frame 4 is tilted, and molten metal (aluminum, magnesium, etc.) is supplied into the pot 3 that is in a receiving posture, and the tilting frame 4 is returned. With the movement, the molten metal in the pot 3 is poured into the mold.

More specifically, the mold is a lower mold 5 having an upper opening.
And a frame-shaped upper mold 6 that fits into the opening. Lower mold 5
Is mounted on a base 7 fixed to the tilting frame 4,
The upper die 6 can be moved up and down in the tilting frame 4 by a lifting cylinder 8 attached to the tilting frame 4. Since the upper die 6 is a frame body that fits into the opening of the lower die 5 as described above, the molten metal poured from the pot 3 is
It will be poured inside.

The pot 3 is fixed to, for example, the upper mold 6, and the mounting posture of the container portion thereof is set corresponding to the inclination angle (for example, 60 °) of the tilting frame 4. That is, the mounting position of the container portion of the pot 3 is such that when the tilting frame 4 is in the tilted state, the container portion is in the receiving shape, and the lower die 5 and the upper die 6 are in an up-and-down relationship to the upright state of the tilting frame 4. It is designed such that the container portion gradually rises from the receiving shape to pouring out the molten metal according to the transition.

In such a tilting caster, the tilting frame 4 levitated from the installation surface 10 of the fixed frame 1 is
Standing on a workbench 9 that is connected to the fixed frame 1, the work such as the storage of the core is performed. The working procedure for producing one product in this tilting casting machine is as follows. (1) In the tilting frame 4 in which the upper die 6 is retracted upward and is in the upright state, the lower die 5 is moved by the air duster.
After air cleaning, several cores are placed in the lower mold 5. (2) The upper die 6 is lowered and the lower die 5 is aligned with the die. (3) The tilting frame 4 is tilted, and the solid phase residue of the molten metal adhered to the bottom of the pot 3 in the shape-receiving posture is peeled off. (4) The start switch is pushed to start the initial casting process (the tilt frame 4 is returned to the upright state after the molten metal is supplied to the pot 3 in the receiving shape by a pouring robot (not shown)). (5) After a predetermined time has passed, the upper mold 6 is retracted from the lower mold 5,
The product is taken out from the lower mold 5 by a take-out robot (not shown).

The power casting machine described in Japanese Utility Model Laid-Open No. 63-127761 employs a type in which the mold is tilted from an upright state by a predetermined angle and the molten metal is poured from a pot.

[0007]

The conventional tilting caster has many problems in the following points. (1) The core receiving work or the air cleaning work is a work in which the half body is thrown into the tilting frame 4, and the workability is extremely poor and painful due to the narrow inner volume of the tilting frame and the ambient temperature. Becomes

It is possible to carry out the above-mentioned core storage at the side opposite to the tilting side of the tilting frame 4 (hereinafter referred to as the "downward tilting side"), but the solid phase residue peeling work of (3) is carried out. Because of the necessity, the worker is forced to work on the tilt side of the tilting frame 4. However, standing on this tilted side may cause the arm of the pouring robot to interfere with the operator if the pouring robot is accidentally turned on. For this reason, when the worker is working, the pouring robot is prevented from being turned on by a prohibiting means such as a mat switch.
After all, since it is an electrical interlock, the positional relationship in which the operator and the tilting frame 4 are mechanically completely separated is not ensured.

An object of the present invention is to provide a tilting type casting machine which avoids mechanical interference with a worker and ensures safety.

[0010]

According to the present invention, there is provided a tilting frame which is held by a fixed frame and which is displaced between an upright state and a tilted state, a lower mold having an upper opening attached to the tilting frame,
It has an upper mold which is matched with the lower mold by ascending and descending, and a pot for temporarily storing the molten metal supplied when the tilting frame is tilted and pouring the molten metal into the lower mold together with the returning movement of the tilting frame. Further, there is provided lower die driving means for moving the lower die to the side of the tilting frame which is opposite to the depression.

[0011]

According to the above construction, since the lower die can be pulled out to the opposite side of the tilting frame by the lower die driving means, the lower die air cleaning work, the core storing work and the product take-out work in a wide working space can be performed. It becomes possible to do it.

[0012]

EXAMPLES The present invention will be described in detail below with reference to the examples shown in FIGS. The tilting casting machine according to the present invention comprises a tilting frame 12 attached to a fixed frame 11 provided on the installation surface 10, and the tilting frame 12 includes:
A lower die 13, a base 14 on which the lower die 13 is placed, an upper die 15 that moves up and down with respect to the lower die 13, a pot 16 fixed to the upper die 15, and the like are provided. And the base 14
Is movable in the tilting direction and the tilting side of the tilting frame 12, and the pot 16 can be swung and displaced from the pouring angle of the molten metal to the angle that is inverted with respect to the mold as shown by the chain double-dashed line. Is configured.

The mounting structure of the tilting frame 12 is as follows. The tilting frame 12 includes the left and right frames 12a.
The lower frame 12b is installed in the bottom of the fixed frame 11, and a through hole 18 is formed substantially in the center of the left and right frames 12a.
Is inserted into the through hole 18. As a result, the tilting frame 12 is pivotally supported by the fixed frame 11 via the support shaft 17.

On the other hand, a tilting cylinder 2 for tilting the tilting frame 12 toward the tilting side of the tilting frame 12.
1 is attached to the fixed frame 11. The tilting cylinder 21 has its rear end on the cylinder side pivotally supported by the support plate 20 attached to the fixed frame 11, and has a piston tip 21.
2a is pivotally attached to a pin 19 protruding from the right frame 12a in FIG. Therefore, the tilting frame 12 is pivotally displaced about the support shaft 17 between the upright state and the tilted state with the operation of the tilting cylinder 21. This tilt range is, for example, 60 °.

The lower die driving means for moving the base 14 on which the lower die 13 is placed in the downward tilting direction and the downward tilting direction is constructed as follows. The base 14 is a pedestal having an L-shaped cross section that includes a main portion that houses the lower die 13 and an extending portion. The bottom of the tilting frame 12 is flush with the main portion and the extending portion. Draw-out cylinder 23 mounted on 12b
Is connected to the piston tip portion 23a. Further, on the lower frame 12b of the tilting frame 12, a pull-out cylinder 23 and a rail 24 having a rail 24a coinciding with the direction of the pull-out cylinder 23 are attached. A slider 25 protruding from the bottom is fitted. As a result, the base 12 is
By the operation of the pull-out cylinder 23, it is possible to move on the lower frame 12b of the tilting frame 12 in the directions of the tilted side and the tilted side.

In addition, on the side of the tilting frame 12 opposite to the depression,
Partition plate 22 for safety installed upright from the fixed frame 11
There is a work window 22 on the partition plate 22 for inserting a worker's arm or the like into the casting machine side and performing work such as core insertion.
a is opened, and the work window 22a is provided with an area sensor 35 for prohibiting entry of a human body in operation. The upper die 15 is configured to move up and down with respect to the lower die 13 by the following configuration.

On the left and right frames 12a of the tilting frame 12, an upper upright piece 12c and a middle upright piece 12d are formed in a brim shape, and a cylindrical slider 27 is inserted between the upper and lower upright pieces 12c and 12d. A double rod 26 is installed. The slider 27 is connected to the upper mold 15. In addition, the middle upright piece 12d includes an elevating cylinder 28 that is positioned in the middle of the rod 26 and that is vertically oriented.
Is attached, and the piston tip portion 28a of the lifting cylinder 28 is connected to the upper die 15 via a bracket 29.

Next, the pot driving means for allowing the pot 16 to be displaced from the normal angle is constructed as follows. The pot 16 is mainly composed of a dish-shaped container part, and
As shown in FIG. 4 and FIG. 4, a rod 30 is attached to the rear surface thereof, and the rod 30 includes both brackets 31 from the upper mold 15.
It is rotatably suspended. One end of the rod 30 extends from the bracket 31 on the same side, and one end of a swinging piece 32 is connected to the extending portion. Swinging piece 3
The other end of 2 is pivotally supported by a piston tip portion 33a of a swing cylinder 33 attached to a bracket 34 of the upper mold 15. With this configuration, the pot 16 is rotated about the rod 30 by, for example, 90 ° by the operation of the swing cylinder 33.
Can be rocked.

The tilt-type casting machine constructed as described above is
It works as follows. First, at the stage before the activation switch is turned on, as shown in FIG.
Extends to bring the upper die 15 to the upper position, and the drawer cylinder 23 also extends to bring the lower die 13 together with the base 14 to the partition plate 22 on the opposite tilt side of the tilting frame 12. At this time, the operator inserts the core into the lower mold 13 through the opening 22a.
Set to.

Next, when the activation switch is turned on, the drawer cylinder 23 is retracted to move the base 14 into the tilting frame 12.
Guide inside. The lower die 13 is stopped at a position facing the upper die 15 in the tilting frame 12 by the movement of the base 14.
Then, the lifting cylinder 28 is retracted to move the upper mold 15 downward, and the upper mold 15 is matched with the lower mold 13 in which the core is housed.

When the upper die 15 and the lower die 13 are fitted together as described above, the tilting cylinder 21 is changed from the extended state to the retracted state, and as shown in FIG. The tilting frame 12 is tilted by 60 ° so that When the tilting frame 12 tilts as described above, the pot 16 becomes horizontal on the opening surface side as shown in FIG. Since the solid phase residue of the molten metal is attached to the pot 16 in the pre-manufacturing process in the pot 16 in the receiving posture, the rocking cylinder 33 is stroked several times, for example. Such movement of the rocking cylinder 33 causes the pot 16
Is displaced to the receiving posture shown by the solid line and the pouring posture shown by the chain double-dashed line, and the solid phase residue of the molten metal adhering to the bottom can be peeled off and dropped.

When the solid phase residue of the molten metal is peeled off, the rocking cylinder 33 is set to the initial extended state and the pot 16 is returned to the receiving position. Then, the molten metal is filled in the pot 16 that has been returned to the receiving shape. When an appropriate amount of molten metal is filled,
Next, the tilting cylinder 21 is displaced from the retracted state to the extended state. Therefore, in the lower mold 13 in which the core is set,
In the process in which the tilting frame 12 returns from the tilted state to the upright state, the molten metal in the pot 16 is gradually poured.

After the molten metal in the lower die 13 is solidified, the elevating cylinder 28 is extended to retract the upper die 15 above the lower die 13, and then the drawing cylinder 23 is extended to move together with the lower die 13. The base 14 is propelled to the anti-decline side. As a result, the lower mold 13 comes close to the partition plate 22, and the product is taken out from the lower mold 13 by a take-out robot (not shown).

In this way, one product is manufactured, and the lower mold 13
When the temperature drops to a predetermined temperature, the operator blows off the lower mold 13 from the partition plate 22 side and sets the core. Then, the same process is repeated again by turning on the activation switch. According to the above-mentioned embodiment, the pot driving means for swinging the pot into which the molten metal is poured is provided, and the pot is swung by the driving means to remove the solid phase residue of the molten metal.
Complete safety can be ensured by eliminating the work on the tilt side of the tilt frame that interferes with the pouring robot.

[0025]

As described above, according to the present invention, the lower die driving means for pulling the lower die to the wide working space on the opposite side of the tilting frame is provided, and the lower die air cleaning work and the core receiving work place are completely installed. It was possible to install it in a position mechanically separated from the casting machine, and it was possible to have an extremely safe arrangement.

[Brief description of drawings]

FIG. 1 is a side view of a tilting caster according to an embodiment of the present invention,

FIG. 2 is a front view of the casting machine,

FIG. 3 is a configuration diagram showing a mounting form of a pot,

FIG. 4 is a side view of FIG.

FIG. 5 is an operation diagram showing the operation of the lower mold driving means of the present invention;

FIG. 6 is an operation diagram showing the operation of the pot driving means of the present invention,

FIG. 7 is a configuration diagram showing a conventional tilting type casting machine.

[Explanation of symbols]

10 ... Installation surface, 11 ... Fixed frame, 12 ... Tilt frame, 13 ... Lower mold, 14 ... Base, 15 ... Upper mold, 16 ...
Pot, 17 ... Spindle, 21 ... Tilt cylinder, 23 ... Draw cylinder, 24 ... Rail, 26 ... Rod, 27 ... Slider, 28 ... Lifting cylinder, 30 ... Rod, 32 ... Swing piece, 33 ... Swing Cylinder.

Front page continued (72) Inventor Hideaki Shimizu 2-chome Toyota-cho, Kariya city, Aichi Prefecture Toyota Industries Corporation (72) Inventor Kenji Sogabe 1 Toyota-cho, Aichi prefecture Toyota Motor Corporation (72) Inventor Eiji Naruse 3-1-1 Honohara, Toyokawa-shi, Aichi Shinto Engineering Co., Ltd.

Claims (2)

[Claims] 1. A fixed frame, and a tilting frame which is held by the fixed frame and is displaced between an upright state and a tilted state,
The lower mold of the upper opening attached to the tilting frame, the upper mold which is matched with the lower mold by raising and lowering, the molten metal to be temporarily stored, and the displacement of the tilting frame causes the lower mold to enter the lower mold. A tilting casting machine comprising: a pot for pouring the molten metal; and a lower mold driving means for moving the lower mold to a tilt-down side of the tilting frame. 2. A pot driving means for swinging the pot to separate and drop the solid phase residue of the melt adhering to the bottom of the pot after the molten metal is discharged.
The tilting caster described.