JP2760914B2 - Soft hand - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soft hand used for conveying a casting or the like, and more particularly to a soft hand in which a rubber tube is hardly damaged.

[0002]

2. Description of the Related Art A soft hand for transporting parts and the like is disclosed in Japanese Patent Application Laid-Open No. Hei 2-212089. As shown in FIG. 2A, a pipe 22 is provided inside the base 10, and an inflatable tube 19 made of rubber or the like is attached to the tip of the base 10, and the tip is formed on a part to be conveyed or the like. Air flows into the inner space 24 from the air supply / exhaust hole 23 of the conduit 22 to expand the tube 19 as shown in FIG. It presses and grips the carrier.

[0003]

In the prior art shown in FIG. 2, if the transferred object is a casting or the like and has burrs at the hole entrance, when the soft hand enters the hole of the transferred object, the tube is removed by burrs. Contact may cause damage. In addition, even if the transferred object is a part or the like that has been subjected to cutting, if chips or the like remain or adhere to the press contact portion, the tube may be damaged when the tube is expanded and pressed. . The present invention
The purpose of the present invention is to provide a soft hand that protects a tube from projections such as burrs when the soft hand enters a hole of a conveyed body, and prevents adhered matter such as cutting powder from rubbing the tube when pressed. It is assumed that.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a base having a conduit therein, an expander provided on a side surface of the base which can be expanded and contracted by air supplied and exhausted through the conduit, and a base provided in front of the expander. In a soft hand provided with an end portion and a substantially conical shaped flap having an outer diameter larger than the outer diameter at the time of expansion body contraction, the base has one end in addition to the above-mentioned conduit leading to the expansion body. Providing a second conduit reaching the drain and having the other end connected to the compressed air supply means, and also providing a third conduit communicating with the second conduit and communicating with the discharge hole on the surface of the drain,
It is characterized in that compressed air can be ejected from the surface of the rag through the inside of the base.

[0005]

An embodiment of the present invention will be described below with reference to FIG. The soft hand 1 includes a base 10 and a chisel 12, and the base 10 is attached to the transport device 4. A rubber tube 19 expandable by the inflow of compressed air or the like is attached to the outer peripheral surface of the side surface of the tip of the base 10, and inside the pipes 22 and 23 connected to the inner space 24 of the tube 19,
Another conduit 13 that is open at the tip 11 of the base 10 is provided. The other end 18 of the other conduit 13 communicates with a compressed air source 51 through a pipe 50 via a direction switching valve 52.

[0006] At the front end 11 of the base 10, a flap 12 is attached with an adhesive or a screw. The chisel 12 has a protrusion 2 having a diameter greater than the diameter of the tube 19 when retracted.
0, and has a tapered surface 16 connected to the protruding portion 20 and closed in a direction to be inserted into the hole of the conveyed object. Naturally, the diameter is smaller than the hole diameter of the transported body, but it is desirable that the gap be as small as possible. Further, a tapered portion 21 is also provided on the side opposite to the insertion direction of the projecting portion 20. In the inside of the flap 12, when attached to the base 10, the another pipe 1
3 and from the end 15 of the pipe 14
Exhaust holes 17 are provided in the surface 16 of the bottom.

[0007] The soft hand 1 configured as described above is
When the casting burr 30 is formed at the hole entrance when the casting device 30 is inserted into the hole of the transferred body 3 as a casting part by the transfer device 4, the surface 16 of the slug 12 and the casting burr 30 come into contact with each other, and the surface 16 Enters while destroying the casting burr 30. Therefore, when the soft hand 1 enters the transported body 3, the tube 19 in the contracted state is inside the projecting portion 20 of the slug 12, so that the tube 19 does not contact the casting burr 30 and is not damaged.

At this time, the exhaust port 1 is supplied from the compressed air source 51 through the direction switching valve 52 through the pipes 13 and 14.
When the compressed air is discharged from 7, the foreign matter such as sand adhering to the inner wall 31 of the hole of the transported body 3 can be removed.
Thus, when the tube 19 is inflated, it is not rubbed by foreign matter, and there is no cut or hole. Even if the transported object 3 has a machined hole, the same operation and effect can be obtained when the hole entrance has burrs or the inner wall has chips.

When the soft hand 1 is pulled out of the conveyed body 3 after the tube 19 is contracted, the soft hand 1
Even when the casting burr 30 is not removed and remains bent when entering, the casting burr 30 can be easily pushed away by the tapered portion 21 of the protruding portion 20, and the soft hand 1 is separated from the transferred object 3. be able to.

[0010]

As described above, in the soft hand according to the present invention, when the tube is inserted into the conveyed object, the tube does not hit the protrusion at the hole entrance and removes the deposits from the inner wall of the hole. And the life of the soft hand can be extended.

[Brief description of the drawings]

FIG. 1 is a diagram showing the structure of a soft hand according to the present invention.

FIG. 2 is a diagram showing the structure of a conventional soft hand.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Soft hand 3 Conveyed object 10 Substrate 12 Tunnel 17 Exhaust hole 19 Tube

Claims (1)

(57) [Claims] 1. A base having a conduit therein, an expander provided on a side of the base expandable and contractable by air supplied and exhausted through the conduit, and an expander provided at an end of the base ahead of the expander when the expander contracts. A soft hand having a substantially conical shape with an outer diameter larger than the outer diameter of the pipe. A second conduit connected to the supply means is provided, and a third conduit communicating with the second conduit and communicating with the discharge hole on the surface of the rag is also provided on the rag. Soft hand characterized by being able to squirt.