JPH03464A - Apparatus for shaking product - Google Patents

Abstract

PURPOSE:To eliminate the development of crack or breakage in a product and to prevent excess restraint to shaking of the product by providing a table, shaking machine for exciting the table and holding means which can be deformed corresponding to the surface of the product and can elastically pressurize the product on the table. CONSTITUTION:The product 7 is laid on the table 5, and after holding the product with the holding means A, the table is excited with the shaking machine 8. As the holding means can be deformed corresponding to the surface of the product and elastically pressurize and hold the product on the table 5, the product can be held with the suitable force and with almost the fixed pressurize force irrespective of size and shape of the product. By this method, there is no apprehension of the development of crack or breakage in the product caused by jumping of the product during shaking and contrarily, no apprehension of the excess restraint to the shaking of the product, and it is unnecessary to exchange the holding means A according to the size and shape of the product.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an article vibrating device.

2. Description of the Related Art A conventional article vibrating device, for example, a vibrating device for removing sand from castings, is known in which an article is placed on a table and the table is vibrated by a vibrator.

In this type of vibrating device, there are two methods for holding an article on a table: a method of holding the article by its own weight, and a method of holding the article using a dedicated jig depending on the size of the article.

Furthermore, an air hammer type vibrating device is also known in which an article is directly struck 7 with a rod of an air cylinder to generate vibration. When using this air hammer type vibrating device, there are two methods: a method in which the articles to be hammered together with an air cylinder are held on a table using a special jig, and a method in which the article is held by the operator's hands.

Problems to be Solved by the Invention In the case of a vibrating device that vibrates an article by holding it on a table by its own weight, the holding force is small, so there is a risk that the article will jump up during the vibration, causing cracks, chips, etc. in the article.

In the case of a vibrating device that uses a jig to hold an article on a table, the article may be held firmly and the holding force may become excessive. In this case, the jig absorbs the vibration and the vibration of the article is reduced. is suppressed excessively. In addition, it is not versatile because it requires a special jig depending on the size of the article.

When an air hammer type vibration device is used, the rod of the air cylinder directly hits the article, which may cause cracks or chips depending on the article.

Further, although some conventional vibrating devices have a table on which an article is placed at an angle, the angle of inclination cannot be easily changed. Therefore, it is not possible to easily change the inclination angle depending on the purpose of use or the condition of the article (for example, how much sand is attached to the inside of the casting).

Therefore, an object of the present invention is to provide an article vibrating device that holds the article with an appropriate holding force so that there is no risk of the article jumping up during vibration and causing cracks or chips, and there is no risk of excessively suppressing the vibration of the article. It's about doing.

Another object of the present invention is to provide an article vibrating device having a holding means that can hold an article regardless of its size.

A further object of the present invention is to provide an article vibrating device that can easily change the inclination angle of a table on which an article is placed.

Means for Solving the Problems An article vibrating device according to claim 1 includes a table 5 on which an article is placed, a vibrator 8 that vibrates the table, and a vibrator 8 that is deformable in accordance with the surface of the article and that vibrates the article. A holding means A capable of elastically pressing the article onto the table is provided.

When the vibration device of the present invention is used for a vibration device for removing particles attached to an article, such as for removing sand from a foundry with foundry sand, in addition to the structure described in claim 1 as described in claim 2, Furthermore, it is preferable to include a tilting means B capable of tilting the table at an arbitrary angle.

Hri The invention as set forth in claim 3 is a table 5 on which an article is placed.
, a vibrator 8 that vibrates the table, and a tilting means B that can tilt the table at an arbitrary angle.

In the vibrating device according to the first aspect of the present invention, the article 7 is placed on the table 5, the article 7 is held by the holding means A, and then the table is vibrated by the vibrator 8.

Since the holding means A is deformable in accordance with the surface of the article 7 and elastically holds the article 7 on the table 5 under pressure, it can be held with an appropriate holding force; It can be held with almost constant pressure regardless of the shape.

The vibrating device according to claim 2 is characterized in that after the article 7 is placed on the table 5, the table is tilted to a desired angle by the tilting means B, and then the table is characterized by the vibrator 8. In the invention, an article 7 is placed on a table 5, the article is tilted at a desired angle, and then the table is vibrated by a vibrator.

Embodiments Hereinafter, embodiments of the article vibrating device of the present invention will be described based on the drawings.

FIG. 1 is a front view of an embodiment in which the article vibrating device according to the present invention is applied to a sand removal device for castings, and FIG. 2 is a front view showing the operating state of the same embodiment.

In the figure, a pedestal 2 installed on a foundation 1 such as the floor of a building supports a table 5 below it via two air springs 3.4. A casting 7 is placed on the table 5 before molding sand (for example, core sand) 6 is removed. It is preferable to provide friction members such as rubber or stoppers at appropriate locations on the table 5 to prevent the casting 7 from slipping.

A vibrator 8 for vibrating the table 5 is attached below the table 5.

A cylinder 10 having a rod 9 movable downward is attached above the pedestal 2. The rod 9 is provided with an air spring 11. - The air spring 11 has a structure in which pressure is maintained by metal members 11a provided at both ends of the air spring 11. If this metal member 11a comes into direct contact with the casting 7, one or both of the metal member 11a and the casting 7 may be damaged. To prevent this, an elastic member (rubber) 12 is provided below the air spring 11.

The cylinder 10, the air spring 11, and the elastic member 12 constitute a holding means A that can be deformed in accordance with the surface shape of the casting (article) 7 and can elastically hold the casting 7 on the table 5.

13 is an air pressure source. Pressurized air from this air pressure source 13 is supplied to the air spring 11 via a pressure regulator 14 and a tube 15, and is supplied to the air spring 3 via a pressure regulator 16 and a tube 17. It is supplied via two pressure regulators 18, 19, a switching valve 20 and a tube 21. The switching valve 20 has a first position SVI where the pressure regulator 18 and the tube 21 are connected and a second position SV2 where the pressure regulator 19 and the tube 21 are connected. It is in.

The pressure jJ4 regulators 16 and 18 are set to approximately the same air pressure so that the table 5 is normally level. Pressure regulator 19 is set at a higher pressure than the pressure set by pressure regulator 13.18.

These pressure regulator 19, switching valve 20, and air spring 4 constitute a tilting means B for tilting the table 5.

In addition, 22-24 are safety valves, and 25-28 are pressure gauges.

Next, a method for removing sand 6 from the casting 7 using the vibrating device having the above configuration will be explained.

(1) After placing the casting 7 with sand on the table 5, (2) As shown in Fig. 2, move the switching valve 20 to the second position SV2.
to adjust the pressure set by the pressure regulator 19 to the air spring 4.
supply to. This causes the table 5 to tilt counterclockwise in the drawing.

(3) Concurrently with the operation in (2), the cylinder 10 lowers the air spring 11 to sandwich the casting 7 between the table 5 and the air spring 11.

As a result, the air spring 11 is deformed in accordance with the surface shape of the casting 70 and the inclination of the table 5, and the casting 7 is held tilted at a constant angle. At this time, the pressing force by the cylinder 10, that is, the holding force for holding the casting 7, is approximately constant regardless of the size of the casting 7, the shape of the surface, and the inclination angle of the table 5.

(4) Drive the vibrator 8 to vibrate the table 5 to separate the sand 6 from the casting 7. Since the casting 7 is tilted, the sand 6 separated from the casting 7 does not stay inside the casting 7 but falls onto the table 5.

In addition, an air spring 3°4.11 is installed between the table 5 and the pedestal 2.
, the vibrations of the table 5 and the casting 7 are hardly transmitted to the outside.

(5) Finally, the position of the switching valve 20 is returned to SVI, the table 5 is made horizontal, and the casting 7 from which the sand 6 has been removed is taken out, and the work is completed.

FIG. 3 is a front view showing another embodiment of the present invention.

This embodiment differs from the holding means of the embodiment shown in FIGS. 1 and 2 only in the holding means that can elastically hold the article 7 on the table 5, and is otherwise the same.

The retainer rLA in this example has an upwardly acting rod 3
0, a contact member 32 that can contact the upper end of the rod 30, a vertically movable rod 33 fixed to the abutting member 32, and an air spring 11 fixed to the vertically movable rod 33.

A guide member 34 is attached to the pedestal 2 and guides the vertical movement of the vertical movement rod 33.

In this embodiment, under normal conditions, the cylinder 31 is activated, the rod 30 is raised and brought into contact with the abutment member 32, and in particular, the air spring 11 is positioned above. When holding the article 7, the rod 30 is lowered with the cylinder 31 inactive, thereby lowering the air spring 11 by its own weight.

FIG. 4 is a perspective view showing the table 5 and holding means A of still another embodiment of the present invention.

The holding means A in this embodiment consists of a plurality of elastic bands 41, 42 fixed at both ends on the table 5. These bands/1.1. By sandwiching the article 7 between the table 50 and the table 50, the article 7 is held elastically.

Although the article vibrating device of the present invention has been described above based on the embodiments shown in the drawings, the present invention is not limited to these embodiments, and can be modified in various ways within the range described in Item 3H.

For example, a vibrating device may be constructed in which either the holding means A or the tilting means B is omitted. Moreover, although the example in which the vibrator 8 is attached to the table 5 is shown, the vibrator 8 may be attached to the pedestal 2 or other appropriate parts to vibrate the table 5.

Further, in the embodiment shown in FIG. 4, two elastic bands are provided, but only one elastic band or a plurality of elastic bands may be used. 'FfJ, if several elastic bands are provided, the elastic bands can be made into a net shape to cover the article.

Effects of the Invention As is clear from the above description, according to the article vibrating device according to claim 1, the holding means A holds the article 7 with an appropriate holding force against vibrations in the vertical direction. There is no risk that the article 7 will jump up inside, causing cracks or chips in the article 7, or conversely, that vibrations of the article 7 will be excessively suppressed.

■In addition, articles 7 with various inclination angles, sizes, and shapes
Therefore, there is no need to replace the holding means A depending on the size, shape, etc. of the article 7.

According to the article vibrating device according to claim 2 or 3, since the table 5 can be tilted at an arbitrary angle and vibrated by the tilting means B, the tilt angle can be easily adjusted depending on the purpose of use and the condition of the article 7. can be changed to .

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of an article vibrating device according to the present invention, FIG. 2 is a front view showing the operating state of the embodiment of FIG. 1, and FIG. 3 is a front view of another embodiment of the present invention. , FIG. 4 is a perspective view showing a holding means according to still another embodiment of the present invention. 5...Table, 7...Casting (article), 3゜4.1
DESCRIPTION OF SYMBOLS 1... Air spring, 14, 16, 18.19... Pressure regulator, 20... Switching valve, A... Holding means, B...
・Tilt means. Figure 1

Claims (3)

[Claims] (1) A table on which an article is placed, a vibrator that vibrates the table, and a holding means that is deformable in accordance with the surface of the article and that is capable of elastically pressing the article onto the table. An article vibrating device comprising: (2) a table on which an article is placed; a vibrator that vibrates the table; and a holding means that is deformable in accordance with the surface of the article and that is capable of elastically pressing the article onto the table. An article vibrating device comprising: a tilting means capable of tilting the table at an arbitrary angle. (3) An article vibrating device comprising: a table on which an article is placed; a vibrator that vibrates the table; and a tilting device capable of tilting the table at an arbitrary angle.