JPS60128142A - Oscillating type absorbing device - Google Patents

Abstract

PURPOSE:To uniformly sustain the absorbing center of an absorbing pad even though the absorbing pad is swung in any directions, in order to stabilize the absorption of a material, by positioning the rotating center of oscillation of the absorbing pad on the absorbing surface of an absorbing pad or in the vicinity thereof. CONSTITUTION:The rotating center of oscillation of an absorbing pad 11 is positioned at the center O of the outer surface of an air-tight member 16 or on the absorbing surface thereof, and therefore, the absorbing is always constant even if the absorbing pad 11 which is titled as indicated by the phanotom line absorbs the material to be absorbed with no force being generated orthogonal to the direction of absorption. With this arrangement a pad member 18 may be prevented from increasing in abrasion, and as well may stably absorb always the material to be absorbed. Further, a differential height (a1) between the absorbing surface 18a of the pad member 18 and the front end 18c of the skirt section of the same is held at a least minimum value necessary for maintaining a vacuum between the the absorbing surface 18a of the pad member 18 and the material to be absorbed, and therefore, it is possible to completely prevent wrinkles, breakage, etc. from taking place even upon absorption of a thin material.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an oscillating suction device that suctions articles using vacuum pressure, and is particularly used in operations where suction rods are subject to severe wear or where thin articles are suctioned. The present invention relates to an oscillating suction device suitable for use in cases where wrinkles are likely to occur during cleaning.

[Background of the invention]

FIG. 1 shows a conventional swing-type suction device, in which 1 is a suction pad and 2 is a support shaft that supports a suction pad 1. and,
It consists of a rad member 5 which is fitted onto the airtight member 3, and a core metal 6 which is screwed into the airtight member 3 and supports the rad member 5. Further, the height difference a' between the suction surface 5a of the nokrad member 5 and the tip 5C of the skirt portion 5b is large. The support shaft 2Fi has a suction hole 7 therein which communicates with the suction hole 4 of the airtight member 3, and a ball 8 is formed at the end of the shaft. Then, this ball 8 and the airtight member 3
The concave spherical receiving surface 9.10 formed on the core bar 6 constitutes a universal joint that allows the suction pad 1 to swing. The center of rotation 0' of this oscillating motion is located at the center of the sphere 8.

However, in the above-mentioned suction device, the rotation center O' of the oscillating motion of the suction pad 1 is located at a distance from the suction surface of the suction pad, so that the suction surface is located at the arrow m in the figure.
A deviation of the suction center occurs by an amount corresponding to h. The misalignment generates a force in a direction perpendicular to the suction direction, and the suction surface 5a of the pad member 5 and the skirt tip 5
The height difference a' with c does not increase the wear of the pad member 5, but it becomes a factor that makes the suction of the article unstable. In addition, if the entire suction device is used horizontally, the suction pad 1 will tilt downward due to the influence of gravity, and if suction is performed in this state, suction will fail and the suction state will be destroyed in the process. There is a fear.

In addition, the suction surface 5a of the pad member 5 and the tip 5C of the skirt portion
Since the height difference a' between the holder and the holder is quite large, there is a problem that wrinkles or tears may occur in thin articles when they are picked up.

[Purpose of the invention]

The purpose of the present invention is to prevent the suction center from shifting no matter which direction the suction pad is oscillated, to reduce wear on the pad member, to stably suction objects, and to provide a method for suctioning thin objects. To provide a swinging type suction device which does not cause wrinkles or tears even when suctioning.

[Summary of the invention]

In order to achieve this object, the present invention provides a universal joint in which the suction pad is oscillated by a core metal and an airtight member, which are the components of the suction pad, and a spherical member provided at the end of the support shaft. At the same time, the center of rotation of one swinging motion is located on or near the suction surface of the suction pad, and the difference in height between the suction surface of the pad member and the tip of the skirt portion of the suction pad is adjusted between the suction surface and the suction surface. It is characterized by having the minimum size necessary to maintain the degree of vacuum between it and the adsorbed material.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG. Second
The figure shows a sectional view of the oscillating head type suction device according to the present invention. This suction device includes a suction pad 11, a support shaft 12, a spherical nut 13, a double nut 14, and a spring 1.
5. The suction pad 11 is composed of an airtight member 16 having a suction hole 17 in the center, a pad member 18 that fits around the airtight member 16, and a core metal 19 that is screwed into the airtight member 16 and supports the pad member 18. has been done. Further, the head of the core metal 19 is provided with a shaft hole 2o through which the support shaft 12 is inserted, and the head of the core metal 19 and the head of the airtight member 16 that are in contact with each other are formed on the surface of the airtight member 16. It is formed into a spherical surface centered on center 0. In addition, the suction surface 18a of the pad member 18 and the skirt portion 18
The height difference a1 between the tip 18c and the tip 18c is set to the minimum necessary size to maintain the degree of vacuum between the suction surface and the object to be suctioned. The support shaft 12 has a suction hole 21 inside thereof that communicates with the suction hole 17 of the airtight member 16, and also has a spherical member 22 at the shaft end inserted into the core metal 19 after adjusting the shaft hole of the core metal 19. Set up a. This spherical member 22 is formed into a spherical surface whose inner surface matches the spherical head surface of the airtight member 16,
Moreover, the outer surface is formed into a spherical surface that matches the inner spherical surface of the head of the metal core 19. Then, the inner surface of the spherical portion #22 and the head of the airtight member 16 come into contact with each other, and the outer surface of the spherical member 22 and the inner surface of the head of the core bar 19 come into contact with each other, so that the airtight member 1
This constitutes a universal joint in which the suction pad 11 performs multiple oscillation movements with the surface center 0 of the suction pad 6 as the center of rotation. Spherical nut 1
3 has one end surface formed into a spherical surface that matches the outer spherical surface of the head of the core metal 19, and is screwed together with a double nut 14 into a screw cut into the outer periphery of the support shaft 12. By adjusting the tightening force of the spherical nut 13 and the double nut 14, the oscillation of the suction pad 11 can be adjusted. The spring 15 is interposed between the double nut 14 and the identification member 23 attached to the support shaft 12, and functions to buffer the shock that occurs when the suction pad 11 suctions an object.

Next, the operation of the present invention will be explained.

The rotation center of the oscillating movement of the suction pad 11 is the airtight member 16
Since the center of the surface is OK, that is, it exists on the suction surface, even if the suction pad 11 adsorbs the object in an imaginary tilted state, the center of attraction with the object will always remain constant. Therefore, no force is generated perpendicular to the suction direction.

Therefore, increase in wear on the pad member 18 can be prevented, and
It is possible to always stably adsorb objects to be adsorbed. Furthermore, when the suction device is used horizontally, even if the suction pad 11 is tilted downward or upward, suction can be performed reliably, and the suction state will not be destroyed midway.

Furthermore, since the height difference a1 between the suction surface 18a of the pad member 18 and the skirt tip 18c is extremely small, wrinkles and tears are less likely to occur in thin articles when they are suctioned.

In this embodiment, the rotation center of the suction pad 11 is set at the surface center 0' of the airtight member 16, but the suction pad 11 is rotated around the center α.
Of course, it is also possible to use a configuration in which the head oscillates and moves.

FIG. 3 shows another embodiment of the present invention, which differs from FIG. The holes 25 of the pad 24 are connected to the suction holes 17 of the airtight member 16 through the communication holes 26 provided between the airtight member 16 and the airtight member 16.
The point is that it is connected to the

To explain in detail, as shown in FIG.
The holes 25 of No. 4 are arranged over the entire area of the pad 24. Further, as shown in FIGS. 5 and 6, a small skirt portion is formed around each hole 25, and a groove 28 is further provided around the skirt portion. The skirt portion n protrudes from the suction surface 24a of the pad 24 by a slight dimension a2, so that it follows the surface of the object to be suctioned during zeta suction.

In addition, #$28 is designed to prevent crushing, damage, or wear due to frictional force of the skirt portion n during adsorption.
It serves as an escape for the skirt portion 27.

Therefore, in this suction device, the suction surface 1 of the pad member 18
8a and the suction surface 24a of the pad 24, that is, the suction surface 24a of the suction pad 11 can adsorb the object to be suctioned, which makes the suction more reliable and reduces the problem when a thin object is suctioned. The appearance of wrinkles is also significantly reduced.

7 and 8 show modified examples of the skirt portion of the pad. In FIG. 7, the outer peripheral surface of the skirt portion γ' is formed into a cylindrical surface to increase the load capacity of the skirt portion n'. This is what I did. By adopting this structure, the life of the skirt portion n' can be further extended, and the suction force of each pad can be increased.

Further, in FIG. 8, the width of the skirt portion 27' is made larger than that in FIG. 6, and the thickness thereof is made thinner. With this structure, the ability to cope with subtle irregularities on the surface of the object to be attracted can be improved, that is, the ability to follow the surface of the object to be attracted can be improved.

〔Effect of the invention〕

As explained above, according to the present invention, no matter which direction the suction pad is oscillated, the suction center does not shift, so articles can be stably suctioned and the wear of the pad member can be reduced. Moreover, even when thin articles are adsorbed, wrinkles and tears do not occur.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional swing-type suction device. FIG. 2 is a cross-sectional view showing one embodiment of the swing-type adsorption device of the present invention, FIG. 3 is a cross-sectional view showing another embodiment of the present invention, and FIG. 4 is a bottom view of the , FIG. 5 is a bottom view showing an enlarged view of the hole in the pad, FIG. 6 is a sectional view showing the periphery of the hole in the pad, and FIGS. 7 and 8 are sectional views showing modifications of the skirt portion of the pad. 11... Suction pad, 12... Support shaft, 16...
Airtight member, 17.21... Suction hole, 18... Pad member, 18a... Adsorption surface, 18b... Skirt portion, 1
8C... Skirt tip, 19... Core metal, 22...
- Spherical member, 24...pad, 24a...adsorption surface,
25... hole. Agent Tadashi Akimoto, Attorney Figure 2'jJ3 Figure 4 Figure 5 Figure 24 Figure 6 Figure 7 Figure 8

Claims (1)

[Scope of Claims] 1. A suction pad composed of an airtight member having a suction hole in the center, a pad member fitted onto the airtight member, and a core metal coupled to the airtight member to support the pad member; A support shaft having a suction hole communicating with the suction hole of the airtight member is provided inside the support shaft, and a spherical member is provided at the shaft end of the support shaft inserted from the outside to the inside of the core metal, and the spherical member and the core metal and the airtight member constitute a universal joint that performs the oscillating movement of the suction pad, and the center of rotation of the oscillating movement is located on or near the suction surface of the suction pad, and the suction on the pad member The height difference between the surface and the tip of the skirt is essential to maintain the degree of vacuum between the suction surface and the object to be suctioned!
The pupil is characterized by its minimal size. 2. Scope of claims! The oscillating-head suction device according to item 8M1, wherein the suction pad has a porous pad provided on the surface of its airtight member.