JP2007253188A - Vibration type sand shaking-out apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration type sand shaking-out apparatus for a workpiece (material to be cast) in which the core sand stuck to a hollow part in the workpiece is dropped down by vibrating the workpiece such as an automobile part formed with the casting, the apparatus is minimized, noise caused by hitting is eliminated, the environmental pollution caused by spattering of the sand is prevented and further, a problem point in the case of putting two sets of motors can be eliminated. <P>SOLUTION: The vibration type sand shaking-out apparatus for the workpiece 1, in which the sand stuck thereto is shaken out with the vibration is provided with a vibration table plate 5 laid on the base table 3 through an elastic supporting member 4, a holding tool 6 for the workpiece 1 laid on the vibration table plate 5 and further, one set of vibration motor 7 connected with the vibration table plate 5. After holding the workpiece 1 with the holding tool 6, the vibration table plate 5 is vibrated by driving the vibration motor 7, and the vibration is given to the workpiece 1 held with the holding tool 6 and the sand on the workpiece 1 is shaken out. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vibrating sand drop device for a workpiece that drops sand that adheres to a workpiece by vibration, particularly a core sand that adheres to a hollow portion of the workpiece, such as automobile parts. In particular, a vibrating sand drop device for a workpiece that holds a workpiece to be sand-dropped on a vibration base plate, and drops the sand adhering to the workpiece by vibrating the vibration base plate by a single vibration motor.

  Many machine parts such as automobile parts are molded by casting. A large amount of sand adheres to the cast product (work), and it is necessary to remove the adhered sand.

  2. Description of the Related Art Conventionally, as a method for removing sand from a workpiece, a technique is known in which a workpiece to which sand is adhered is hit with a hammer, and the workpiece is vibrated to drop sand. For example, a workpiece sand removal device (utility model registration No. 3077681) that holds a workpiece in a hermetically sealed box and hits it with a hammer, reverses the workpiece cradle, and hits the workpiece with a hammer with the feeder section facing downward Hammering device (Patent No. 2003-305559), a workpiece-side soundproof box, and a hammer-side soundproof box, both of which form a sealed chamber and strike the workpiece with a hammer. No. 3205897) is known.

  However, all of these devices are of a type that removes sand adhering to the workpiece by hitting the workpiece with a hammer. Not only the size of the device is increased, but also noise due to impact, environmental pollution due to sand scattering, etc. The problem arises.

  Further, an apparatus for applying a vibration to a workpiece by a pair of vibration motors and dropping the core sand of the hollow portion by this vibration force has been filed by the present applicant (Japanese Patent Application No. 2004-243118).

Since this apparatus uses two vibration motors, it has an excellent sand drop effect, but has the disadvantage of being large and uneconomical because of the two vibration motors. Further, when two motors are used, the two motors rotate synchronously, so that it is necessary to accurately distribute the weights of the two motors and dispose the elastic support members.
Utility model registration No. 3076881 JP 2003-305559 A Japanese Patent No. 3205897 Japanese Patent Application No. 2004-243118

  The problem to be solved by the present invention is to achieve the sand removal of the workpiece by using a single vibration motor, in particular, by giving vibration to the workpiece instead of the conventional sand removing technique of hitting the workpiece with a hammer. As well as downsizing the device, it eliminates noise caused by impact, prevents environmental pollution caused by sand scattering, and eliminates the problems associated with using two motors, improving the disadvantages of the prior art. An object of the present invention is to provide a vibrating sand removal device.

  In order to solve the above-described problems, according to the present invention, there is provided a vibrating sand dropping device for a casting that drops sand adhering to the casting by vibration, and is placed on a base via an elastic support member. A vibration base plate, a casting holder installed on the vibration base plate, and a motor connected to the vibration base plate, and holding the casting to be sanded by the holder. Thereafter, the vibration motor is operated to vibrate the vibration base plate, thereby giving vibration to the casting held by the holding tool and dropping sand of the casting.

  Since the above-mentioned present invention holds the workpiece to be sand-dropped on the vibration base plate and vibrates the vibration base plate with a single vibration motor, the workpiece, particularly the hollow core sand is dropped, The size is reduced without the need for a large device such as a hammering chamber, and there is no noise caused by impact, and further, there is no problem of environmental pollution due to scattering of sand.

  Furthermore, since the apparatus of the present invention includes only one vibration motor, it is miniaturized and economical. When two motors are used, the two motors rotate synchronously, so the weight distribution of the two motors and the arrangement of the elastic support members must be properly set. Becomes useless.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a plan view of a specific example of a vibrating sanddropper according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a perspective view thereof.

  As shown in FIGS. 1, 2, and 3, the present invention is a casting vibration sand dropping device A that drops core sand of a hollow portion 2 of a casting (work) 1 by vibration, and includes a base 3. The vibration base plate 5 is placed on the elastic support member 4 on the top. The vibration base plate 5 is provided with a work holder 6 for holding the casting 1 therebetween, and the vibration base plate 5 is connected to one vibration motor 7. The elastic support member 4 is a rubber, a metal spring, a pneumatic spring or the like, which insulates vibrations to the floor surface and prevents disturbance of vibrations to the vibration base plate.

  In the sand removal apparatus A according to the present invention configured as described above, when sand is removed, first, as shown in FIG. The clamp rod 9 is retracted through the guide 8 to create a space for inserting the workpiece 1.

  Next, as shown in FIG. 5, after the work 1 is placed in a space created by removing air, the work holder 6 is inflated with air, and the work 1 is held by the holding tool 10 at the tip of the clamp rod 9. The workpiece 1 is held by the workpiece holder 6 while being pressed down.

  After holding the workpiece 1 on the workpiece holder 6 in this way, the vibration table 5 is vibrated by operating one vibration motor 7 connected to the vibration plate 5, thereby causing the holder 6 to move. The held workpiece 1 is vibrated to remove sand adhering to the workpiece 1, particularly the core sand of the hollow portion 2. When the core sand of the hollow part 2 is dropped and removed, the dropping and removal can be performed efficiently by introducing a granular solid into the hollow part 2 of the work 1.

  Since the present invention described above is configured to hold the workpiece to be sand-dropped on the vibration base plate, and to drop the sand adhered to the workpiece, particularly the core sand of the hollow portion, by vibrating the vibration base plate with a vibration motor. The size is reduced without the need for a large device such as a hammering chamber, and there is no noise caused by impact, and further, there is no problem of environmental pollution due to scattering of sand.

  Furthermore, since the present invention includes only one vibration motor when vibrating the vibration base plate, it is not only economical, but also the structure is simplified and miniaturized. That is, since the present invention includes only one motor, in the case of two motors, it is necessary to rotate the two motors synchronously. Therefore, it is necessary to appropriately distribute the weight and arrange the elastic support members. However, there is no such restriction in the case of one unit. For this reason, the vibration sand removing apparatus of the present invention is highly likely to be widely used in the casting technical field.

It is a specific example top view of this invention vibration sand removal apparatus. FIG. 2 is a side view of the apparatus of FIG. 1. FIG. 2 is a perspective view of the apparatus of FIG. It is a state figure before clamping a workpiece | work. It is a state figure after clamping a work.

Explanation of symbols

A Casting vibration dropping device 1 Workpiece 2 Hollow part 3 Base 4 Elastic support member 5 Vibration base plate 6 Work holder 7 Vibration motor 8 Work clamp guide 9 Clamp rod 10 Holding plate

Claims (3)

  A vibratory sand removal device for a casting that removes sand adhering to a casting by vibration, and is provided on a vibration base plate placed on a base via an elastic support member, and installed on the vibration base plate A casting holder and a vibration motor connected to the vibration base plate are further provided. After holding the casting to be sanded by the holder, the vibration motor is operated to operate the vibration table. An oscillating sand dropping device characterized in that a plate is vibrated and thereby the casting held by the holder is vibrated to drop sand of the casting.   2. The vibrating sand dropping device according to claim 1, wherein the core sand in the casting hollow part is dropped by vibration. 3. The vibrating sand drop device according to claim 2, wherein a granular solid material is introduced into a hollow portion of the casting to drop and remove the core sand of the hollow portion.

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