JPH0214832Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a vibrating device used in sand-filled vanishing model casting.

Conventional technology In the conventional sand-filled vanishing model casting method, a model is backed up with sand and molten metal is cast to obtain a product.
When backing up a model with dry sand, if the inner and outer peripheral surfaces of the complex-shaped model are not sufficiently filled with dry sand, the resulting product will be uneven in quality.

For this reason, the conventional sand filling method is
As shown in the figure, a vanishing model 3 is placed in a flask 2 placed on a vibrating table 1a, filled with dry sand 4, and the flask 2 is vibrated to enhance the filling effect. The vibration device includes a vibration table substrate 1b provided on a flat substrate 13,
This and a vibration table 1a provided with a vibrator 5,
They are connected and integrated via a shock absorber 6.

Problems to be Solved by the Invention The conventional vibrating device is constructed as described above, and its vibrating table only vibrates in one direction, the X direction, with respect to the flask installed on it, as shown in FIG. Or in the two directions of X and Y, or in the X and Y directions.
Vibration was applied in three directions, Y and Z, by selecting vibration directions according to the shape of the vanishing model, but in each case, the filling of sand was not sufficient for a model with a complex shape. In the cavity A of the vanishing model 3 shown in FIGS. 3 and 4, it was difficult to fill the cavity A with sufficient sand by vibration alone due to the stability angle of sand flow.

As a result, the shape and dimensions of the void A in the product became unstable, and the surface became rough, causing casting defects such as sand burning, making it impossible to obtain a good product with stable quality. .

The purpose of this invention is to obtain a vibration device that is simple and highly effective in filling dry sand even for vanishing models with complex shapes.

Means for Solving the Problem This invention provides a means for freely adjusting the degree and direction of inclination of the vibrating table of the conventional vibrating device, and the means includes a tilting table whose degree of inclination can be freely adjusted. and its tilted table are connected by a rotating shaft, or the substrate on a flat surface and the vibration table are connected by a plurality of cylinders having vertically expandable shafts without providing a rotating shaft. This is what I did.

Function The vibrating device of this invention has the above-mentioned configuration, so when a rotating shaft is used, the dry sand filled in the flask is transferred to the rotating shaft after adjusting the inclination according to the shape of the vanishing model. When the vibrating table is vibrated while rotating the flask, the flask and the dry sand in the flask also tilt and rotate together with the flask while vibrating, and the gravity of the sand is also added, increasing the amount and range of movement of the dry sand compared to the conventional method. .

In addition, when a rotating shaft is installed, the degree and direction of inclination of the vibration table can be freely adjusted by changing the lengths of multiple shafts that cannot rotate. Movement range increases.

Embodiment An embodiment of this invention will be described with reference to FIG. 1 of the attached drawings. This configuration includes a tilting table 8 whose inclination with respect to a plane can be freely adjusted, and a lower end portion of the tilting table 8 that is perpendicular to the tilted surface. A table 1a is connected to the rotary shaft 9 and its upper end, and is connected to the tilting table substrate 1b via the shock absorber 6. A flask 2 is fixed to the upper surface of the table 1a, and a table 1a is connected to the upper end of the rotary shaft 9, and a flask 2 is fixed to the upper surface of the table 1a. It consists of a vibrator 5 provided.

Disappearance model 3 with the shape shown in Figures 3 and 4
is installed in the flask 2, and the vibrator 5 is operated while rotating the rotary shaft 9, the vibration table 1a also rotates while vibrating, and along with this, the disappearing model 3 and the dry sand 4 in the flask 2 also rotate. It rotates while vibrating.

The vibration direction at this time may normally be any one of X, Y, and Z directions.

Along with this movement, the dry sand 4 also moves due to the action of gravity as described above, and the range and amount of movement thereof increases significantly compared to when the dry sand 4 simply vibrates on a plane, as shown in the figure. Parts such as the void A of the vanishing model 3 are also sufficiently filled with the dry sand 4.

Therefore, the molten metal is poured into the flask 2 through the sprue 1.
By pouring from step 2, a product with a smooth casting surface and stable quality can be obtained.

Further, another embodiment will be described with reference to FIG. 2 of the attached drawings. The structure is such that two cylinders 7a and 7b having vertically extendable shafts 10a and 10b are vertically provided on a base plate 14, and A vibrating table substrate 1b, a vibrating table 1a, a flask 2, a vibrator 5, and a shock absorber 6 are arranged at the upper end in the same manner as in the embodiment shown in FIG.

With the above configuration, the shaft of one of the two cylinders, for example shaft 10a, is shortened to the minimum height, and the shaft 10b of the other cylinder is extended so that it has an inclination that matches the disappearing model installed in the flask. After tilting the vibrating table 1a, the vibrating table substrate 1b, and the flask 2, the vibrating table 1a is vibrated.

Depending on the shape of the model, the shafts 10a, 1
The vibration tables 1a and 1b are vibrated again with the height of 0b reversed from the initial position.

The vibration direction at this time may be any one of the X, Y, and Z directions as in the embodiment shown in FIG. 1, and substantially the same actions and effects as in FIG. 1 can be obtained. Although two shafts are provided in the above embodiment, it goes without saying that the same effect can be obtained by using two or more shafts.

Effects of the invention As mentioned above, this invention makes it possible to adjust the inclination and direction of the vibration table of the vibration device for vanishing model casting. Any part of the circumferential surface is sufficiently filled with dry sand, and a high-quality product with a beautiful surface and stable shape and dimensions can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a front longitudinal cross-sectional view of the main part of one embodiment of the present invention, Fig. 2 is a front longitudinal cross-sectional view of the main part of another embodiment, Fig. 3 is a front longitudinal cross-sectional view of the disappearing model, and Fig. 4 is a front longitudinal cross-sectional view of the main part of another embodiment. FIG. 3 is a side view, FIG. 5 is a front longitudinal cross-sectional view of a main part of a conventional vibrating device, and FIG. 6 is a perspective view of a flask and a diagram showing the vibration direction conventionally given to the flask. 1a... Vibration table, 1b... Vibration table substrate, 2... Flask, 3... Vanishing model, 4...
Dry sand, 5... Inclined table, 7a, 7b... Cylinder, 8... Inclined table, 9... Rotating shaft, 10a, 10b... Shaft.

Claims (1)

[Claims for Utility Model Registration] 1. A vanishing model is installed in a flask fixed on a vibrating table, the surrounding area is filled with dry sand, and the filling effect is enhanced by applying vibration from the vibrating table to the flask. A vibration device for casting an expendable model as described above, further comprising means for adjusting the degree of inclination and the direction of inclination of the vibrating table. 2. A request for registration of a utility model characterized in that the means for adjusting the degree and direction of inclination of the vibrating table comprises a tilting table whose degree of inclination can be adjusted freely, and a rotating shaft connecting the tilting table and the vibrating table. A vibration device for vanishing model casting according to item 1. 3. A request for registration of a utility model characterized in that the means for adjusting the degree and direction of inclination of the vibrating table is characterized in that the substrate and the vibrating table are connected by a plurality of cylinders having vertically expandable shafts. A vibration device for vanishing model casting according to scope 1.