JPH0810934A - Shaking-out device for molding sand - Google Patents

Abstract

PURPOSE:To provide a shaking-out device for molding sand, in which almost perfect shaking-out of the molding sand can be executed even in the case of a work having complicate shape. CONSTITUTION:A work receiving jig 7 which can hold the work in the vertical posture, and a hammer device 14 hitting the surface of the work W from the horizontal direction are arranged on a frame 4 shaken in the right and left direction while centering the horizontal axis. The molding sand can almost perfectly be removed even from the inner part of the work W having the complicate shape because the molding sand in the work W is shaken out while shaking to the right and left direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sand removing device for a cast work, and more particularly to a sand removing device suitable for a work having a complicated shape such as a cylinder head or a cylinder block.

[0002]

2. Description of the Related Art As a sand removing device for a cast work, a device for fixing the work on a jig and hitting the surface with a pneumatic hammer is widely used. However, in the case of a work having a complicated shape such as a cylinder head or a cylinder block, there is a problem that the sand adhering to the inner surface does not drop well and the amount of sand remains large.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art and to provide a sand removing device capable of almost completely removing sand even for a workpiece having a complicated shape. is there.

[0004]

The sand removing device of the present invention made to solve the above problems can hold a work in a vertical posture on a frame that is swung about a horizontal axis. It is characterized in that a work receiving jig and a hammer device for hitting the surface of the work held by the work receiving jig from the horizontal direction are provided. In addition,
It is preferable that the work receiving jig can swing the work holding surface between the horizontal surface and the vertical surface.

[0005]

The sand removing device of the present invention holds the work in a vertical posture on the work receiving jig, and strikes the surface of the work from the horizontal direction with a hammer device to remove the sand. Since the sand is removed while swinging the entire frame on which the receiving jig and the hammer device are mounted to the left and right around the horizontal axis, the sand inside the work can be almost completely removed.

[0006]

The present invention will be described below in more detail with reference to the illustrated embodiments. FIG. 1 is a front view of the entire apparatus, in which 1 is a machine base, 2 and 3 are bearings provided on the machine base 1, and 4 is a frame horizontally supported by these bearings 2 and 3. As shown in FIG. 2, a rocking cylinder 6 is provided between the arm 5 at one end of the frame 4 and the machine base 1, and the entire frame 4 can be rocked left and right by 45 degrees. You can do it.

A work receiving jig 7 is provided on the left side portion of the frame 4 in FIG. As shown in the enlarged view of FIGS. 3 and 4, the work receiving jig 7 is of an L type and is supported by a horizontal shaft 8. A structure capable of turning 90 degrees about the horizontal axis 8 by a cylinder 9 to take a position shown in FIG. 3 in which the work holding surface is horizontal and a position in FIG. 4 in which the work holding surface is vertical. Has become.

As shown in FIG. 2, a pair of clamp claws 10 is provided on both sides of the work holding surface of the work receiving jig 7. These clamp claws 10 and 10 are opened and closed by a central clamp cylinder 11 to clamp a workpiece W which is a cast product. Reference numeral 12 is a roller conveyor for transferring a work, and a work transfer head 13a driven by a work transfer cylinder 13 is provided above the roller conveyor. This work transfer head 13a is a roller conveyor
The work W on 12 can be moved from the position in FIG. 1 to the position on the work receiving jig 7 shown in FIG. At this position, the work W is chucked by the clamp claws 10 and is rotated 90 degrees together with the work receiving jig 7 as shown in FIGS.

A hammer device 14 for striking the surface of the work W from the horizontal direction is provided on the right side portion of the frame 4 in FIG. The hammer device 14 is provided with a slide table 17 which can be horizontally moved by a screw jack 16 on a horizontal guide 15. A guide rail 18 and a feed screw mechanism 19 are provided on the slide table 17, and the guide rail 18 and the feed screw mechanism 19 are provided on the slide table 17.
The slide table 20 is supported so as to be movable in the direction perpendicular to the paper surface of FIG.

Further, on the second slide table 20, a feed screw mechanism 19 driven by a servo motor 21 is provided.
And a pair of pneumatic hammers 22, 22 which are moved up and down in FIG. These pneumatic hammers 22 and 22 are moved in opposite directions, and the distance between them can be adjusted. The hammer device 14 described above adjusts the positions of the pneumatic hammers 22, 22 in the three-axis directions of X, Y, and Z according to the size and shape of the work W, and is suitable for removing sand from the surface of the work W. You can tap on a point horizontally.

Reference numeral 23 is a sand recovery hopper provided below the machine base 1, 24 is a hopper gate opened and closed by a cylinder 25, and 26 is a sand recovery conveyor.

Next, the operation of this device will be described. First, Fig. 3
As shown in, the work W is moved on the roller conveyor 12 by the work transfer head 13a with the work holding surface of the work receiving jig 7 horizontal, and placed on the work receiving jig 7. Then, after the work W is chucked by the clamp claws 10 and 10, the work receiving jig 7 is rotated by 90 degrees by the cylinder 9 to bring the work W into a vertical posture as shown in FIGS.

Next, the pneumatic hammer 22 of the hammer device 14,
Corresponding the 22 positions to the X, Y, and
Adjust in the Z axis direction. And pneumatic hammer 22,22
Is operated to strike the surface of the work W from the horizontal direction to remove sand. Along with this, the rocking cylinder 6
Thus, the entire frame 4 is intermittently oscillated by a predetermined angle (45 degrees in the embodiment) from side to side around a horizontal axis passing through the bearings 2 and 3. Accordingly, even when the work W has a complicated shape such as a cylinder head or a cylinder block, the sand can be completely discharged from the inside of the work W. The sand dropped from the work W is collected by the sand recovery hopper 23, recovered by the sand recovery conveyor 26, and reused.

[0014]

As described above, since the sand removing device of the present invention can remove sand while swinging the work and the hammer device about the horizontal axis, the sand removing device can be used like a cylinder head or a cylinder block. There is an advantage that almost perfect sand removal can be performed even from a work having a complicated shape.

[Brief description of drawings]

FIG. 1 is a front view showing an entire embodiment of the present invention.

FIG. 2 is a right side view showing the entire embodiment of the present invention.

FIG. 3 is a front view showing a main part of the embodiment.

FIG. 4 is a front view showing a main part of the embodiment.

[Explanation of symbols]

 1 Machine Stand 2 Bearing 3 Bearing 4 Frame 5 Arm 6 Swing Cylinder 7 Work Jig 8 Horizontal Axis 9 Cylinder 10 Clamp Claw 11 Clamp Cylinder 12 Roller Conveyor 13 Work Transfer Cylinder 13a Work Transfer Head 14 Hammer Device 15 Guide 16 Screw Jack 17 Slide table 18 Guide rail 19 Feed screw mechanism 20 Second slide table 21 Servo motor 22 Pneumatic hammer 23 Sand recovery hopper 24 Hopper gate 25 Cylinder 26 Sand recovery conveyor W work

Claims (2)

[Claims] 1. A work receiving jig capable of holding a work in a vertical posture on a frame swinging around a horizontal axis, and a surface of the work held by the work receiving jig from a horizontal direction. A sand removing device characterized by being provided with a hammering device. 2. The sand removing device according to claim 1, wherein the work receiving jig can swing the work holding surface between a horizontal surface and a vertical surface.