JPH0155954B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adsorption device that injects pressurized fluid to adsorb a flat plate. In conventional adsorbers, the adsorber is brought into contact with a flat plate to be adsorbed to form a sealed chamber, and the fluid in the sealed chamber is discharged or sucked to create a vacuum state, thereby adsorbing the flat plate. Therefore, it has been necessary for the adsorber to be made of a flexible and easily deformable material with resilience and tenacity, or to use a material that adheres closely to the flat plate (for example, rubber, soft polyethylene, etc.). In addition, the flat plate to be suctioned must have a smooth surface and good adhesion, which limits the usage conditions, and when releasing suction, it is impossible to simply stop suction, and the fluid must be fed back. In order to improve release response, an additional function of fluid reversal is required, such as having to pressurize the suction part to a level higher than atmospheric pressure, which has drawbacks in terms of application performance and cost. .

The present invention solves the drawbacks of the conventional adsorber as described above.
The solution was achieved with a unique idea of pressurized injection technology, which is completely opposite to conventional techniques such as releasing fluid or suctioning and reducing the pressure.

The structure and effects of the present invention will be explained in more detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention, and is shown as a cross-sectional view for ease of understanding. , has an almost cylindrical appearance, and one of the two circular surfaces at both ends of the cylinder has a supply port 6, which serves as a fluid supply port, protruding from the other. Another circular surface has a symbol 2 so that it is concentric with the outer body of symbol 1.
By configuring the suction pad of , a radial throttle nozzle of fluid ejection port number 8 and a lip-shaped negative pressure generating side of number 9 are placed near the diamond line with the outer body cylindrical portion. The suction surface 10 is formed to be open over the entire circumference in the radial direction of the outer body. The supply port 6 may be formed on the suction pad 2 having the suction surface 10 as shown in FIG. 1, or on the outer body 1 as shown in FIG. good.

In any case, the main components of the adsorber of the present invention are:
As shown in FIG. 1, a suction pad 2 is provided concentrically with the outer body 1, a packing 3 is provided, and a 4 holder is connected to the outer body 1 and the suction pad 2. It consists of only four parts of the nut.

Now, the outer body 1 has a pressure accumulation chamber 7 composed of a suction pad 2, a radiation aperture nozzle 8, and a lip 5 made up of an object to be sucked. A negative pressure generating side 9 is formed in the shape of a shape, and the suction pad 2 has a fluid supply port 6, a screw corresponding to the nut 4 connected in combination with the outer body 1, There is also a ring gasket groove with reference numeral 3 that prevents fluid leakage at the connecting part with the outer body of Fugo 1 (however, this sealing mechanism is functionally the same even if a sheet gasket such as 17 is used, but it is more In order to obtain high airtightness, the effect is even greater if a partner is used.) The hole numbered 18 for transferring the fluid to the pressure accumulator (this hole numbered 6 also reduces the resistance of the fluid if there are more than one hole). (It is preferable that the opening area is larger than the supply port.) Furthermore, the radial throttle nozzle 8, which is composed of the suction pad 2 provided concentrically with the outer body 1, sprays the ejected fluid evenly in a circular direction. In order to achieve this, the radial throttle nozzle is configured concentrically so as to open in the radial direction of the outer body 1 over the entire circumference.
It is desirable to have an aperture shape that reduces the area gradually.
Further, the jet nozzle at the tip is formed in a slit shape all around the circumference as shown in FIG. ) Furthermore, a suction surface 10 is formed.

Here, as one of the important requirements of the present invention, the suction pad number 2 is fixed concentrically with respect to the outer body number 1, and the radiation aperture nozzle number 8 is fixed to the outer body number 1.
By opening the outer body uniformly over the entire circumference in the radial direction, the fluid is ejected evenly around the outer circumference of the circle.

In the adsorber as described above, the fluid is
When supplied from the supply port numbered 6 as shown by the arrow,
The fluid flows as shown by arrows 12 and 13,
Because it is constricted, it reaches the radial aperture nozzle 8 while being pressurized and decelerated, and rapidly expands through the negative pressure generation side 9 and is evenly discharged to the outside in a circle. The fluid in the adsorption chamber 16 constituted by the adsorbed object and the adsorption surface 10 has a higher pressure than the ejected fluid 15,
It expands toward the low pressure side and expands outward, gets caught up in the jet flow, gets dragged together, and is instantly discharged to the outside, resulting in a negative pressure state close to vacuum.

Then, an object to be attracted 5 approaches the suction surface 10 in an attempt to fill this negative pressure state and is attracted thereto. The operation from the ejection of the fluid to the adsorption of the adsorbed object may seem to take time if explained sequentially, but in reality, it is an almost instantaneous operation. This adsorption state is maintained while the fluid continues to be ejected, but when the ejection stops, that is, the supply of fluid stops, the external fluid flows back into the adsorption chamber, and the weight of the adsorbed object also acts. Adsorption is easily released. This function is the same for the adsorbent having the configuration as shown in FIG.

By the way, the materials of the two parts, the outer body 1 and the suction pad 2, of the suction device shown in Figures 1 and 2 may be metal, resin, porcelain, glass, ceramic, or hard material, depending on the purpose. However, the radial throttle nozzle portion through which the fluid passes at high pressure and high speed is hardened, making the adsorber of the present invention capable of being used repeatedly for a long time, and ensuring that the object to be adsorbed is made of magnetic material. In this case, the adsorption force can be further increased by using an electromagnetic material or an electromagnet for the adsorption device. In addition, under operating conditions where the adsorbed material is a high-temperature body and thermal fluctuations are restricted, if the adsorber is made of a heat-resistant material and the fluid is heated, the influence of temperature changes on the adsorbed material will be reduced.

As explained above, the adsorber of the present invention is completely different from the adsorbers of the prior art in that it adsorbs objects to be adsorbed by ejecting fluid, but the smoothness of the adsorbed surface is not as important as in the prior art. In addition, the results of the suction test show that it can adsorb net-like sheets,
The responsiveness of adsorption and release is immediate by supplying and stopping the fluid, and the airtight condition of the relative relationship between the adsorbent and the adsorber is not as important as in the prior art adsorber. As described above, the adsorption device of the present invention enables automatic opening and closing of net-like sheet bags, which was impossible with conventional technology, and also makes it possible to adsorb, horizontally hold, and transport high-temperature heated objects, and is expected to expand its uses. Of course, the operability is simplified by supplying and stopping the fluid, and the adsorber itself is extremely compact and can be manufactured at low cost.Moreover, the adsorption force is determined by the pressure and flow rate of the fluid as well as the adsorption area.
In other words, since it is proportional to the circumferential length of the radial aperture nozzle, it is easy to standardize specifications based on suction force, and it is extremely easy to save labor and automate suction, gripping, horizontal holding, and transportation by mechanization, which is the effect of the present invention. is enormous.

[Brief explanation of drawings]

The drawings show the adsorber of the present invention, and FIGS. 1 and 2 are cross-sectional views of an embodiment, and FIG. 3 is a partially cutaway side view showing an embodiment of a radial aperture nozzle. be. The names of the main symbols in the diagram are 1... external body, 2...
Suction pad, 3... Ring packing, 4... Nut, 5... Adsorbed object, 6... Supply port formed in the suction pad, 7... Pressure accumulation chamber formed in the outer body, 8
. . . A radiation aperture nozzle composed of an outer body and a suction pad, 9 . . . A negative pressure generating side composed of an outer body and an adsorbed object.

Claims (1)

[Claims] 1 The combination of an outer body forming a pressure accumulation chamber and a negative pressure generation side, and a suction pad provided concentrically with the outer body, which has a supply port, creates a pressure accumulation chamber connected to the supply port, and further connected to the pressure accumulation chamber. In the device constituting the radial throttle nozzle, which opens around the entire circumference in the radial direction of the outer body, pressurized fluid is injected from the supply port through the pressure accumulation chamber and the radial throttle nozzle, creating a negative pressure. A suction device characterized in that a jetted fluid creates a vacuum between a suction pad and an object to be adsorbed, and adsorbs the object.