JP3133498B2 - Strainer mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strainer mounting apparatus and, more particularly, to a strainer mounted on a sprue of a mold in order to prevent foreign matter from entering a cavity of the mold, that is, to prevent so-called slime. For automatically setting the nut.

[0002]

2. Description of the Related Art In recent years, the casting apparatus main body has been automated to save labor in the casting operation. However, a strainer for preventing slag, that is, a so-called net is set in a mold by hand. I have.

[0003] Referring to FIG. 4, the use state of the strainer will be described. FIG. 4 is a longitudinal sectional view of the main body of the pressure casting apparatus, and shows a state in which the strainer S is set on the mold a. That is, the mold A is the upper mold X
And the lower mold Y are superimposed on each other and placed on the base B, and the cavity C is formed on the superposed surface of the mold B.

A cavity C is provided in a crucible R provided below the base B and filled with a molten metal, with a sprue H and a runner P.
And via a conduit L. A strainer S is set at a joint between the gate H and the runner P.

[0005] The set of the strainer S is a cylindrical runner P.
Is formed at the upper end of the cylinder, and a cylindrical step P 'having a diameter slightly larger than the diameter of the runner P is provided and inserted into the step P'. Therefore, the strainer S has a disk shape having a diameter slightly smaller than the diameter of the step P '.

In the main body of the pressure casting apparatus having the above structure,
When the inside of the crucible R is pressurized by pressurizing means (not shown), the molten metal in the crucible R is converted into a conduit L, a runner P, and a strainer S.
And via the gate H into the cavity C. Therefore, even if the supplied molten metal contains slag, it is blocked by the strainer S and is not carried into the cavity C, so that the cast product can be kept at a high quality.

[0007] The strainer S is removed together with the gate part from the casting. In addition,
The nut S is used not only in the low-pressure casting apparatus described above, but also in an ordinary gravity-type casting apparatus. This gravity type casting device
The upside down of the mold part in FIG. 4 is reversed, and a pool is connected to the runner P.

[0008]

As described above, even if the casting apparatus main body is automated, the strainer is set manually, and therefore, in order to automate the entire casting operation, the strainer is required. It was also desired that the set be automated.

SUMMARY OF THE INVENTION The present invention has been made in order to meet the above-mentioned demand, and an object of the present invention is to provide a strainer mounting device capable of automatically setting a strainer.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a strainer mounting portion provided in the middle of a molten metal supply passage leading to a cavity of a mold and having a step having a circular planar shape. In a strainer mounting device for inserting and mounting a disk-shaped strainer, the rolling posture gradually changes to a horizontal state as the strainer rolls downward. And a moving mechanism that moves the lower part of the shoe to the strainer mounting portion and moves the entire shoe to a position away from the mold. It is characterized by becoming.

[0011]

In the above construction, when the lower part of the shoe is positioned at the strainer mounting portion and the strainer is rolled from the upper part of the shoe, the strainer is tilted. It is almost horizontal at the lower part and drops to the strainer mounting part to be set.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a schematic configuration of an apparatus according to one embodiment. Note that the same components as those in FIG.

The strainer S is made of a well-known net of synthetic or natural fibers, and its shape is a disk shape.
It is formed in such a size that it can be inserted on a strainer mounting portion 1 formed by a step P 'provided at the upper part of the runner P.

The shoe 2 is connected to a moving mechanism to be described later, and its shape is shown in FIG. That is,
A cover 2a 'is provided on the inclined lower portion 2a of the door 2 to cover a half circumference of the strainer mounting portion 2a, and the bottom of the cover 2a' is a circle substantially equal to the strainer mounting portion 2a. A hole 2a "is formed. The inclined upper portion 2b extends tangentially to the strainer mounting portion 2a and has one side wall 2 'connected to the cover -2a' and a cover -2a '. And the other side wall 2 ″, which is located at the bottom of both side walls 2 ′ and 2 ″, and one side wall 2 ′ side is high,
And a bottom surface 2c which is inclined so that the other side wall 2 "side becomes lower. The distance between the side walls 2 ', 2" on the inclined upper part 2b side becomes smaller as going toward the inclined upper part 2b side. One strainer S is formed at an interval at which it can roll.

The moving mechanism 3 is guided by a base 3a extending vertically and rotatable in both left and right directions by a motor (not shown), and a guide rod 3b extending horizontally from the base 3a. Moving body 3 that can move in the left-right direction
c, and the lower part of the moving body 3c is
Is connected.

The base 3a and the moving body 3c are provided with a well-known moving mechanism comprising an air cylinder or a rotary screw, respectively, and can move the moving body 3c in a horizontal direction and the shout 2 in a vertical direction. It is configured as follows.

Next, the operation of the present embodiment will be described. The moving mechanism 3 raises the shoe 2 and moves the base 3
a to rotate the lower part 2a of the shoe 2
And then lower the inclined lower end portion 2a until it comes into contact with the strainer mounting portion 1. Then, at the time of the contact, one strainer is supplied to the inclined upper portion 2b of the shoe 2 from a strainer supply device (not shown).

FIG. 3 shows a state of the strainer S until the strainer S supplied to the upper inclined portion 2b of the shoe rolls to the lower inclined portion 2a. As is apparent from this figure, first, the strainer S starts rolling while maintaining the vertical state, and gradually rolls while becoming horizontal as the bottom surface 2c is inclined. And the storage
At a position reaching the corner mounting portion 1, it is substantially horizontal. Therefore, the strainer S is inserted and set in the strainer mounting portion 1 in the horizontal state.

The above-mentioned movement amount of the shot 2 and the moving body 3c and the rotation amount of the base 3a are stored in a controller mainly composed of a microcomputer (not shown). Is controlled by

After the installation of the strainer S, the shoe 2 is separated from the lower mold Y by the moving mechanism 3, and then the upper mold X (see FIG. 4) is set to form a mold A. And
The process proceeds to the casting process as described above with reference to FIG.

As described above, according to the apparatus of the present embodiment, the casting machine body can be completely set because the strainer S can be automatically set in the strainer mounting section 1 only by supplying the strainer S to the shoe 2. Can be automated.

[0022]

The strainer mounting apparatus according to the present invention is provided with a disk-shaped strainer mounting portion provided in the middle of a molten metal supply passage leading to a cavity of a mold and having a step having a circular planar shape. In a strainer mounting device for inserting and mounting a strainer, the bottom surface is inclined so that the rolling posture gradually changes to a horizontal state as the strainer rolls downward. The shot is
A moving mechanism for moving the lower part of the shoe to the strainer mounting portion and moving the entire shoe to a position away from the mold;
Can be automatically set on the strainer mounting portion. Therefore, when the casting apparatus body is automated, it is possible to achieve complete automation including the setting of the strainer.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a schematic configuration of an apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of a shoe.

FIG. 3 is an explanatory diagram for explaining a rolling state of a strainer.

FIG. 4 is an explanatory view showing a state where a strainer is attached to a mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Strainer mounting part 2 Shut 2a Inclined upper part 2b Inclined lower part 2c Bottom surface 3 Moving mechanism C cavity S Strainer P 'Step P Runner (Molten metal supply path) A Mold X Upper die Y Lower die

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B22C 9/08 B22D 18/04 B22D 43/00

Claims (1)

(57) [Claims] 1. A strainer for inserting and mounting a disc-shaped strainer into a strainer mounting portion provided in the middle of a molten metal supply passage leading to a cavity of a mold and having a step having a circular planar shape. A stud having a bottom surface inclined so that the rolling posture gradually changes to a horizontal state as the strainer rolls downward; and And a moving mechanism for moving the inclined lower part to the strainer mounting part and moving the entire stall to a position away from the mold.