JP2887440B2 - Drilling equipment for sanitary ware green body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boring device for boring a drain port or the like in a sanitary ware such as a basin or a toilet.

[0002]

2. Description of the Related Art Conventionally, sanitary ware such as a washbasin and a toilet bowl has been made by casting a slurry into a mold, and then removing the mold from the mold to obtain a green body. Drilling of drainage ports and the like is performed manually using a cylindrical jig, etc.
The green body is deformed or the inner surface of the hole becomes dirty, and it is necessary to finish the inner surface of the hole later, making it difficult to drill the drain port etc. in a clean state without causing deformation etc. It is the present situation.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above-mentioned conventional problems, and facilitates drilling having a smooth inner peripheral surface without damaging or deforming a green body. The first gist of the present invention is to provide a boring device for boring a drain port or the like on a green body such as a wash basin or a toilet, and the boring device has a vibration at its tip. A vibration device provided with a cutter as possible, and a rotation driving means for rotating the vibration device so that the cutter draws a rotation trajectory corresponding to a hole diameter of the drain port or the like. Also, the second gist is:
Along the axis of the motor shaft rotated by the motor,
An adsorbing pad capable of adsorbing is provided at a drilling position of the green body, and the vibrating device is disposed in parallel with the adsorbing pad at a predetermined interval so that the cutter draws a rotation path around the adsorbing pad. It was established.

[0004]

In the first aspect, a vibrating device is provided with a cutter at the tip of the vibrating device, the cutter being rotated by a rotary driving means so as to draw a rotation locus corresponding to a hole diameter of a drain port or the like. Therefore, the cutter can be rotated at a predetermined position on the green body while vibrating, and a hole such as a drainage hole can be drilled well. The viscosity of the green body is reduced at the contact portion with the green body, whereby a drilling process having a beautiful smooth inner peripheral surface can be performed without damaging or deforming the green body. Further, in the second aspect, the suction pad is sucked at a drilling position, and a vibrating device is rotated by a motor around the suction pad to rotate the cutter to a predetermined rotation locus, thereby making a good drilling process. Can be performed, and the drilling scum can be satisfactorily adsorbed by the suction pad and eliminated to the outside.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a state in which a basin is drilled into a green body, and a suction pad 2 provided at a tip end of a robot arm 1 is sucked to a bottom rear surface 3a of a basin 3. Thus, the basin base 3 can be moved to a predetermined position while the basin base 3 is held by the robot arm 1, while the boring device 4 is provided on the elevating device 5 so as to be able to move up and down. The basin base 3 can be drilled from the opposite side of the robot arm 1, and a scrap receiver 6 is provided below the drilling device 4.

FIG. 2 shows the drilling device 4 in detail. A motor shaft 7a of a motor 7 is rotatably supported by a bearing 8 provided on a support bar 9, and the support bar 9 is moved up and down. A rotating frame 10 is fixedly mounted at the end of the motor shaft 7a, and a horizontal frame 1 is horizontally mounted at one end of the rotating frame 10.
1 is fixed via mounting bolts 12, and the horizontal frame 1
A pair of vertical frames 14, 14 are provided on the front end side of the mounting bolts 13, 1 at right angles in a vertical direction, that is, in a vertical direction and parallel to each other.
The pair of vertical frames 14, 14 is connected at predetermined intervals by connecting bolts 20, 20.

On the side of the horizontal frame 11 of each of the vertical frames 14, 14, a loose insertion hole 14a, 14a is formed coaxially therethrough, and a parallel outside of the loose insertion hole 14a is formed. The fixing holes 14b, 14b are formed coaxially, and an air pipe 15 is loosely inserted in the loose insertion holes 14a, 14a in a manner parallel to the horizontal frame 11. An air passage 15a through which air passes is formed inside the air pipe 15, and an air hose connection portion 15b is provided at the left end of the air passage 15a in the drawing, so that an air hose can be connected from the outside. ing. A suction pad 16 made of rubber or the like is provided on the other end side of the air pipe 15, and a spring 17 is fitted around the outer circumference of the air pipe 15 outside the vertical frame 14 on the right side in the drawing. The air tube 15 is configured to be able to move elastically in the horizontal direction via the spring 17.

A vibrating device 18 is inserted in the fixing holes 14b, 14b in parallel with the air pipe 15, and the vibrating device 18 is tightened by tightening bolts 19, 19 to fix the fixing holes. The vibration device 18 is fixed to the inside of the vibration device 18, and a vibration portion 18 a is provided on the left side of the vibration device 18 in the figure, and a thin plate-shaped cutter 21 is attached to the opposite end. The vibrating section 18a generates vibration by ultrasonic vibration, and vibrates the cutter 21 in the axial direction.
It vibrates with about 0 reciprocating vibrations, and its amplitude is, for example, about 20 to 30 μm. In addition, the vibration part 18a
May generate vibration by air drive,
In the case of vibration by air drive, the cutter 21 vibrates in the axial direction at the number of reciprocating vibrations of, for example, about 140 times per second, and its amplitude is, for example, about 0.3 to 1.2 mm.

In such a drilling device 4, when the motor 7 is rotated, the horizontal frame 11 and the vibration device 18 are centered on the air pipe 15 arranged coaxially with the motor shaft 7a. Since the cutter 21 rotates around the air pipe 15, the cutter 21 draws a rotation trajectory having the radius between the suction pad 16 and the cutter 21 around the suction pad 16.

That is, as shown in FIG. 3, when the drainage port 3b of the basin 3 is drilled by the drilling device 4, the cutter 21 draws a rotation trajectory around the suction pad 16, and If the trajectory is set to correspond to the hole diameter of the drain port 3b, the drain port 3 will have a predetermined hole diameter.
b can be drilled.

That is, the robot arm 1 shown in FIG. 1 is driven to move the washbasin blank 3 laterally to the drilling device 4 while being sucked by the suction pad 2, and the suction pad 16 of the drilling device 4 is moved to the washbasin. The air in the air passage 15a of the air pipe 15 is sucked out while the abutment is in contact with the base 3, and the suction pad 16 can be securely suction-fixed to the position of the drain port 3b of the washbasin green base 3. By rotating the motor in this state to rotate the cutter 21 about the suction pad 16, the cutter 21 draws a rotation trajectory about the suction pad 16 while vibrating, and drills a drain port 3 b in the basin 3. It is formed.

When the cutter 21 comes into contact with the basin 3, the cutter 21 is vibrating. Therefore, a thin film of water is formed at the contact portion between the cutter 21 and the base 3 by electroosmosis. As a result, a "return" phenomenon occurs in the green body 3, whereby the contact resistance of the green body 3 decreases, drilling by the cutter 21 can be performed smoothly, and the green body 3 is not damaged by the "return" phenomenon and is deformed. The drilling can be performed without making the inner wall surface of the hole smooth. By changing the distance between the suction pad 16 and the cutter 21, a large-diameter hole can be easily formed.

Further, when drilling a long hole H as shown in FIG. 4, drilling is performed once at the position S1 in FIG. 4, and then drilling is repeated three times with S2 and S3. Thereby, the long hole H can be easily formed.

After the drilling is completed, the robot arm 1 is moved to the right side in the figure to separate the basin blank 3 from the drilling device 4, and the drilling scum is sucked by the suction pad 16. And the drilling scum can be removed satisfactorily.
Conversely, air can be blown out of the suction pad 16 so that the air can be dropped from the suction pad 16 into the waste receptacle 6 and collected, and the recovery of drilled waste is also extremely easy. In addition, although the case where the drain port 3b of the washbasin is drilled in this example,
Drilling holes such as drain holes for Western-style toilets and mounting holes for sanitary ware green bodies can also be processed with beautiful finishes.

[0015]

As described above, the present invention can be applied to green fabrics such as washbasins and toilets.
A boring device for performing boring of a drain port or the like, wherein the boring device includes a vibrating device having a vibrating cutter at a tip thereof, and the cutter draws a rotation path corresponding to a hole diameter of the drain port or the like. With the rotation drive means for rotating the vibrating device, the cutter is rotated while vibrating, causing a `` return '' phenomenon to the green body, without damaging the green body with the contact resistance reduced. Further, it is possible to perform a drilling process having a smooth inner peripheral surface without being deformed.

A suction pad is provided along the axis of the motor shaft rotated by the motor so that the suction pad can be sucked at a drilling position of the green body, and the cutter draws a rotation trajectory around the suction pad. By arranging the vibrating device in parallel with the suction pad at a predetermined interval, the cutter is rotated around the suction pad, and a hole having a predetermined hole diameter is formed by the cutter. In addition, the cutting chips can be adsorbed on the suction pad and the cutting chips can be collected satisfactorily, so that there is an effect that drilling can be performed easily and accurately.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which a boring process is performed on a green body of a wash basin.

FIG. 2 is an enlarged configuration diagram of a drilling device.

FIG. 3 is an explanatory perspective configuration diagram of a rotation state of a suction pad and a cutter of the drilling device.

FIG. 4 is an explanatory view when drilling a long hole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Robot arm 2 Suction pad 3 Basin for washing basin 3b Drain port 4 Drilling device 5 Elevating device 6 Dust receiver 7 Motor 7a Motor shaft 11 Horizontal frame 14 Vertical frame 15 Air pipe 15a Air passage 16 Suction pad 18 Vibration device 21 Cutter

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B28B 11/02 B28B 1/48

Claims (2)

(57) [Claims] 1. A boring device for boring a drain port or the like on a green body such as a washbasin or a toilet, wherein the boring device includes a vibrating device having a vibrating cutter at a tip thereof; And a rotation driving means for rotating the vibrating device so as to draw a rotation trajectory corresponding to a hole diameter of the drain port or the like. 2. A suction pad is provided along the axis of a motor shaft rotated by a motor, the suction pad being capable of being sucked at a drilling position of the green body, and the cutter draws a rotation trajectory around the suction pad. 2. The vibration device according to claim 1, wherein the vibrating device is disposed in parallel with the suction pad at a predetermined interval.
Drilling device for sanitary ware green body according to [1].