JPH10249770A - Vacuum cup - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accelerate a conveying speed of a work by using an space between an outer peripheral edge part of a part and a lip, as a vacuum chamber provided with a through hole for the vacuum air, and conveying the work while absorbing the same. SOLUTION: An inverse conical lip 15 which is concentric with an outer peripheral edge part 12A of a pat 12, and of which a point is same as the outer peripheral edge part 12A of the pat 12, is integrally mounted at a work absorption face 12B side of the pat 12 having a shape of suction cup, to form a cup part 11 of a vacuum cup 10. A through hole 16 for connecting a duct from a vacuum generator, is formed on an upper part of the vacuum cup 10, and the through holes 17A, 17B branched to a vacuum chamber 13 formed by the outer peripheral edge part 12A of the pat 12, and the lip 15, from the through hole 16, are formed. As mentioned above, the vacuum chamber 13 is kept in vacuum by the vacuum air supplied from the through hoes 17A, 17B, through the duct from the vacuum generator and the through hole 16, and a work W can be conveyed in an absorbed condition.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cup which is supplied with vacuum air from a vacuum generator and sucks and conveys a work, particularly a work provided with holes.

[0002]

2. Description of the Related Art Conventionally, when a workpiece W is transported using a vacuum cup 1, the workpiece W is transported as shown in FIG.
The outer peripheral edge 2A of the pad 2 of the vacuum cup 1 is brought into close contact with the vacuum cup 1, and the vacuum chamber 3 is placed between the vacuum cup 1 and the work W.
And the work W is sucked and conveyed.

However, as shown in FIG. 5, when a work W provided with a hole 4 is transported, the work W cannot be sucked by a single vacuum cup 1, so that the hole 4 is evaded regardless of the suction force. A plurality (two in this conventional example) of vacuum cups 1 and 1 are provided at the position, and the work W is sucked and conveyed. Another conventional technique uses a magnet larger than the hole 4 of the work W to attract and transport the work W by the magnetic force of the magnet.

[0004]

According to the above-mentioned prior art, when a workpiece having holes is conveyed, the workpiece cannot be sucked by one vacuum cup as in the case of a workpiece without holes. Regardless of the force, a plurality of vacuum cups must be provided at the positions where the holes are dodged. Therefore, the configuration of the vacuum cup cannot be made compact, which hinders a high-speed work transfer.

Further, when a workpiece is transported by a magnet using a magnet, the workpiece cannot be transported because the workpiece is made of a non-ferrous metal material. Further, there is a disadvantage that the work is easily damaged.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem, and even if a workpiece has a hole near a suction portion with a vacuum cup, one vacuum cup is provided in the same manner as a workpiece without a hole. SUMMARY OF THE INVENTION It is an object of the present invention to provide a vacuum cup capable of adsorbing and transporting a work.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, in a vacuum cup which is supplied with vacuum air from a vacuum generator and sucks and transports a work, a pad formed in a suction cup shape, and A lip that is integrated with the pad on the work suction surface side of the pad and is provided inside the outer peripheral edge of the pad to form a cup portion of the vacuum cup, and a vacuum air hole is formed between the outer peripheral edge of the pad and the lip. A vacuum chamber is provided to suck and transport the work.

[0008]

1 to 3 show one embodiment of a vacuum cup 10 according to the present invention. 1 and 2
As shown in the figure, the pad 12 is formed in a suction cup shape, and the tip is concentric with the outer peripheral edge 12A of the pad 12 on the work suction surface 12B side of the pad 12 and the tip is the outer peripheral edge 12 of the pad 12.
A lip 15 having the same inverted cone shape as A
And the cup portion 11 of the vacuum cup 10
To form

As shown in FIGS. 2 and 3, the vacuum air is supplied to the upper portion of the vacuum cup 10 through a connection fitting 18 through a pipe 18 from a vacuum generator 20 for supplying the vacuum air to the vacuum cup 10. One through hole 16 is provided, and the outer peripheral edge 12 of the pad 12 is inserted through the first through hole 16.
A branched into a vacuum chamber 13 composed of A and lip 15
At least one through hole 17A, 17B (2 in this embodiment)
Book).

As shown in FIG. 3, the vacuum generating device 20 has a vacuum release valve 22, a vacuum switch 23 and a solenoid valve 21 provided with a silencer 24. And is connected to the vacuum cup 10 and the connection fitting 18 through the converm filter 27, the check valve 28, and the branch pipe 29.

[0011] The pipe and connection fitting 1 from the vacuum generator 20
8 through the first through hole 16 connected to the second through hole 17
A, 17B, the vacuum air supplied from the outer peripheral edge 12A of the pad 12 and the lip 15 is brought into a vacuum state by the vacuum air supplied thereto, and the workpiece W provided with a hole 14 in the vicinity of the suction portion with the vacuum cup 10 is provided. And the work W can be transported.

In this embodiment, the cup part 11 is formed by the conical shape of the pad 12 and the inverted conical shape of the lip 15, but the shape of the cup is not limited to this. For example, the outer peripheral edge of the pad may have an elliptical planar shape, and the lip may be provided inside the outer peripheral edge of the pad. Also, the number of second through holes to the vacuum chamber formed by the outer peripheral edge of the pad and the lip,
The position of the first through-hole that branches off the second through-hole is not limited to this embodiment.

[0013]

As is apparent from the above description, according to the present invention, even if the work has a hole near the suction portion of the vacuum cup, the work is performed in the same manner as the work having no hole. Work can be sucked and transported by the vacuum cup.

[Brief description of the drawings]

FIG. 1 is an external view of a vacuum cup according to an embodiment of the present invention.

FIG. 2 is a sectional view of a vacuum cup when a workpiece with a hole is suctioned.

FIG. 3 is a block diagram of a vacuum generator.

FIG. 4 is a cross-sectional view of a vacuum cup according to the related art when a workpiece is sucked.

FIG. 5 is a diagram showing a state in which a workpiece with a hole of a vacuum cup is sucked.

[Explanation of symbols]

10 is a vacuum cup, 11 is a cup part, 12 is a pad, 12A is an outer peripheral edge, 12B is a work suction surface, 13 is a vacuum chamber, 14 is a hole, 15 is a lip, 16 is a first through hole,
7A and 17B are second through holes, 18 is a connection fitting, 20 is a vacuum generator, 21 is a solenoid valve, 22 is a vacuum release valve, 23 is a vacuum switch, 24 is a silencer, 25 is a compressor,
26 is a pressure reducing valve, 27 is a convex filter, 28 is a check valve, 29 is a branch pipe, and W is a work.

Claims (1)

[Claims] 1. A vacuum cup, to which vacuum air is supplied from a vacuum generating device to suck and convey a work, adsorbs and conveys a work, and a pad formed in a suction cup shape and a pad formed integrally with the pad on a work suction surface side of the pad. With the lip installed inside the outer peripheral edge, the cup part of the vacuum cup is formed,
A vacuum cup characterized in that a vacuum chamber is provided between the outer peripheral edge of the pad and the lip and through which a vacuum air is provided so that the workpiece can be sucked and conveyed.