JP2017127929A - Adsorber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adsorber capable of adsorbing surely, even when an object is a paper, a thin film, a perforated substrate or the like, and performing an energy-saving operation.SOLUTION: An adsorber includes a plurality of sets of pumps comprising each independent piston 4 and cylinder. Adsorption holes linked to the outside are formed on one end side of each cylinder. Vacuum or preload is applied to the other end side of each cylinder from the air hose side 6, to thereby drive a piston 4 of a pump, and to adsorb and release an object 14 by each adsorption hole.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an adsorber used in an apparatus for adsorbing, moving, and stacking an object (adsorbed object) such as paper, a film, or a thin plate (for example, a PCB substrate) having holes.

  In the conventional adsorber, each independent rubber pad is evacuated and adsorbed to the surface of the object. In this type, it was not possible to adsorb or take two sheets of paper or objects with holes. Further, for a substrate (PCB substrate) with a hole, a mechanism for manually changing the position of the suction location is required. Further, after the adsorption, the film had adsorption marks on the film, which caused a problem as a product. There is a self-plugging type adsorber for a substrate with a hole, etc., and a place where the hole is located is covered with a ball or leaf spring, and vacuum suction is used in other places. Since a little air is sucked in from the hole, the degree of vacuum drops and the adsorption power becomes weak. Further, in the above conventional adsorber, since the vacuum is created by using a decompression means such as a blower or a vacuum ejector, it is necessary to always operate the decompression means while the object is adsorbed. I could not make it.

JP 2004-55707 A JP 2002-350483 A

  The present invention has been made in view of the above points, and its purpose is to reliably adsorb these objects one by one, even if the object is paper, a thin film, a substrate with holes, etc. An object of the present invention is to provide an adsorber that can be used without adjusting the adsorbing position and can perform energy saving operation.

The adsorber according to the present invention comprises a plurality of independent piston / cylinder type pumps, and an adsorption hole connected to the outside is formed on one end side of each cylinder, and a pressure increasing / decreasing means is provided on the other end side of each cylinder. By applying a vacuum or a pressurized pressure, the piston of the pump is driven to suck and release the object through the suction holes.
The present invention provides an adsorber that stably and reliably adsorbs objects such as paper, thin films, and substrates with holes, one by one. The piston is moved by changing the air pressure of the area (area) divided by the piston of each cylinder. As a result, when the object is sucked, the volume of the space on the object side of the cylinder divided by the piston is increased so that air is sucked from each suction hole. In this system, an object that is blocked by an object and that closes the suction hole is adsorbed by a differential pressure between the atmospheric pressure and the pressure of the area increased in volume by the piston. According to this method, there is a through hole in the object, so even if the atmosphere is sucked into the space on the object side of one of the cylinders and becomes atmospheric pressure, no other pump is used. Since they are independent of each other, the adsorption of the object by each of the different pumps is not affected at all by the atmospheric pressure, and can be stably adsorbed.
In the case of a conventional adsorber in which an independent adsorber or a self-plugging adsorber is attached to the tip of a vacuum generating means such as a vacuum ejector or blower, the vacuum generating means is operated while the object is adsorbed and held. Because it is necessary to keep it running, the amount of high-pressure air used or the power consumption of the blower cannot be reduced. On the other hand, in the case of the present invention, the suction amount (volume) for each time sucks only the volume in each cylinder in the adsorber and the volume in the hose connecting the adsorber to the vacuum generating means. Since the suction can be held only by this, it is not necessary to operate the vacuum generating means while the object is being sucked, and therefore, an energy saving operation can be performed.

  Further, the present invention is characterized in that a connecting cavity for connecting the cylinders is formed on the other end side of the cylinder, and a vacuum or a pressurized pressure is applied to the connecting cavity by the pressurizing / depressurizing means.

  Further, the present invention slidably accommodates pistons in a plurality of cylinders provided in a cylinder case, and forms an adsorption hole having a smaller diameter than the cylinder connected to the outside at one end of each cylinder. The independent piston / cylinder type pump is configured by providing the connecting cavity for connecting the cylinders to the other end.

Further, the adsorber according to the present invention comprises a plurality of piston-cylinder pumps, is connected so as to integrally drive the plurality of pistons, and forms an adsorption hole connected to the outside on one end side of each cylinder, A plurality of pistons are driven simultaneously by applying a vacuum or a pressurized pressure to the other end of any one of the cylinders by driving a piston of any one of the pumps. It is characterized in that the object is adsorbed and released by the adsorption holes.
If comprised in this way, since the number of the cylinders to pressurize and depressurize will decrease, the amount (volume) of air at the time of adsorb | sucking a target object can be reduced, and an energy saving operation can be performed more. Also, since the piston is connected, when a through hole is opened in the object and this object is sucked, the force that atmospheric pressure pushes up the piston in the cylinder facing (communicating with) this through hole pushes up the other piston. Available for power.

  According to the present invention, it is possible to stably perform adsorption regardless of the type of object (paper, thin film, substrate with holes, etc.). For this reason, it can be mounted on the input device, receiver, robot arm, etc., and regardless of the type, it can be operated with energy saving, without adjusting the location of the suction position, taking two pieces, and the suction marks at the time of suction. .

It is a figure which shows the adsorption device 100, Fig.1 (a) is a top view, FIG.1 (b) is side sectional drawing, FIG.1 (c) is front sectional drawing. 1 is a system configuration diagram of an adsorption system using an adsorber 100. FIG. It is state explanatory drawing of the suction device 100 at the time of target object release. It is state explanatory drawing of the adsorption device 100 at the time of target object adsorption | suction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a view showing an adsorber 100 according to an embodiment of the present invention. FIG. 1 (a) is a plan view (however, the illustration of the one-touch joint 5 and the air hose 6 is omitted), and FIG. Side sectional view and FIG. 1C are front sectional views (however, the air hose 6 is not shown). In addition, although the adsorption device 100 described in FIGS. 1B and 1C is shown in a cross section, the hatching of the cross section is omitted (shown in FIGS. 2, 3 and 4 described below). The same applies to the adsorber 100). As shown in these drawings, the adsorber 100 is configured by integrally bonding and fixing a rectangular plate-shaped lid (first member) 1 and a cylinder case (second member) 2. A surface of the cylinder case 2 opposite to the surface facing the lid 1 is an object adsorption surface that adsorbs an object (adsorbed object) 14 described below.

  The surface of the lid 1 facing the cylinder case 2 has a rectangular shape with a shallow depth in the area inside the outer periphery of the lid 1 (range facing all cylinders formed in the cylinder case 2 described below). Recesses (1 mm depth countersink) are provided. In addition, a through-hole penetrating the upper and lower surfaces of the lid is provided at one location near the center of the lid 1, and an air hose 6 is connected to the through-hole via a one-touch joint 5.

  The cylinder case 2 is formed with a plurality of cylinders (35 in this example) each having a cylindrical hole into which the piston 4 is inserted, and the piston 4 is inserted in the cylinder case 2 so as to be movable up and down. Two O-rings are attached to the outer periphery of the piston 4 in duplicate in the piston moving direction. Moreover, the hole which comprises the cylinder provided in the said cylinder case 2 has penetrated the upper and lower surfaces of the cylinder case 2, opens on the surface on the side facing the lid | cover 1 as it is with the internal diameter of a cylinder as it is, The suction surface side is opened with an inner diameter smaller than the inner diameter of the cylinder. The portion of the hole whose inner diameter is reduced is used as a suction hole connected to the outside. In this example, an integrated rubber pad 3 is attached to the object adsorption surface of the cylinder case 2. The integrated rubber pad 3 is a thin plate rectangular shape formed in a lump, is formed to have an outer dimension covering all the suction holes of the cylinder case 2, and the integrated rubber pad 3 is located at a position facing each suction hole. A through hole penetrating through is formed. Further, an adsorption portion that extends in a truncated cone shape (trumpet shape) is formed integrally with the integrated rubber pad 3 on the lower side (outside) of each through hole.

  Then, a piston 4 with an O-ring is inserted into each cylinder of the cylinder case 2 to which the integrated rubber pad 3 is attached, and a lid 1 is placed thereon, and a plurality of bolts (16 in this example) are used. The lid 1 and the cylinder case 2 are fixed together. Thereby, the adsorber 100 is completed.

  Thereby, 35 sets of pumps are constituted by each cylinder and the piston 4. Moreover, the connection cavity which connects each cylinder by the recessed part provided in the lid | cover 1 is formed. Each piston 4 can move between the upper end of the cylinder (the upper surface of the cylinder case 2) and a stepped portion having a reduced diameter at the lower end of the cylinder. Since the piston 4 has no through hole or the like, the space in the cylinder is surely divided into two vertically by the piston 4. An air hose 6 is connected to the through hole provided in the lid 1 by a one-touch joint 5.

  FIG. 2 is a system configuration diagram illustrating an example of an adsorption system configured using the adsorber 100. As shown in the figure, in this adsorption system, the air hoses 6 of a plurality of adsorbers 100 are connected to a switcher (in this example, an electromagnetic valve) 7. In addition to the air hose 6, the switch 7 is connected to a hose connected to the vacuum pump 8 and a hose connected to a pressurizing means (not shown). The switch 7 performs an operation of switching the air hose 6 to the vacuum pump 8 or the pressurizing means. Instead, the vacuum pump 8 may use another vacuum generation device (decompression unit) such as a blower or a vacuum ejector. In short, any means for supplying atmospheric pressure lower than atmospheric pressure may be used. The pressurizing means is a device that supplies a pressure P1 (P1> P0) that is slightly higher than the atmospheric pressure P0. For example, a blower, a pump, a compressor, or the like is used.

  3 and 4 are state explanatory views (operation explanatory views) showing the state of the suction device 100 when the object 14 is released and sucked, respectively. First, the state shown in FIG. 3 is such that the space above the piston 4 of each cylinder is set to the pressure P1 by switching the switch 7 to the pressurizing means side, and is set higher than the atmospheric pressure P0. 4 is lowered to a lower end position of the cylinder (a position where the lower end diameter of the cylinder is in contact with the upper surface of the stepped portion). A hatched portion 9 shown in FIG. 3 indicates a portion (space) where the pressure P1 is applied.

  In this state, as shown in FIG. 4, the suction device 100 is placed on the object 14, the suction portion of the integrated rubber pad 3 is brought into contact with the object 14, and then the switch 7 is moved to the vacuum pump 8 side. When switching, the pressure in the space above the piston 4 of each cylinder is converted from the pressure P1 higher than the atmospheric pressure to the pressure P2 (P2 <P0) lower than the atmospheric pressure by the vacuum pump 8, whereby each piston 4 It moves to the uppermost position in the cylinder and becomes the state of FIG. A hatched portion 11 shown in FIG. 4 indicates a portion (space) where the pressure is P2. As a result, the volume of the lower space in the cylinder separated by the piston 4 varies. That is, the space on the side of the object 14 of the cylinder is increased by about 100 times from the original state (the state shown in FIG. 3), so that the space on the side of the object 14 of the cylinder closed by the object 14. The pressure in 12 drops to pressure P3 (P3 <P0). As a result, a pressure difference (P0-P3) from the atmospheric pressure P0 is generated in the pressure in the space 12 on the object 14 side of each independent cylinder, and the object 14 is sucked.

  At this time, as shown in FIG. 4, the cylinder in which the through hole 15 formed in the object 14 is in any of the suction portions sucks air through the through hole 15, so that the internal pressure becomes the atmospheric pressure P0. The object 14 is not sucked. A hatched portion 13 shown in FIG. 4 indicates a portion (space) where the pressure is P0. However, in the present adsorber 100, each cylinder is divided by the piston 4, and the sucked air is stopped by entering only the space 13 below the piston 4 in the sucked cylinder. (Cannot flow into the connecting cavity connecting each cylinder). Therefore, the amount of suction (volume 16 shown by hatching in FIG. 2) when the vacuum pump 8 sucks the object 14 is always constant. Thus, for example, even if a plurality of adsorbers 100 of the present invention are connected using a small vacuum pump 8 having a capacity of about 60 L / min, operation can be performed with energy saving.

  On the other hand, when releasing the object 14, the switch 7 is switched to the pressurizing means side. As a result, the space above the piston 4 of each cylinder becomes the pressure P1 and becomes higher than the atmospheric pressure P0, so that each piston 4 descends to the lower end position of the cylinder as shown in FIG. As a result, the pressure in the space below each cylinder becomes atmospheric pressure P0 or slightly higher, and the object 14 is released.

  As another embodiment of the present invention, the pistons in the cylinder are connected to be integrally driven and operated by pressurizing / depressurizing any one or a plurality of cylinders. It may be configured. When configured in this way, the diameter of the cylinder or piston to which pressure / decompression is applied may be made larger. Accordingly, the volume 16 shown in FIG. 2 can be reduced, and more energy saving operation can be performed. In addition, when a through hole is opened in the object by connecting the piston, the force that pushes up the piston that corresponds (communication) to this through hole from the bottom also becomes the force that pushes up the other piston. It will help the whole movement.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. Note that any shape, structure, or material not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are exhibited. For example, one or more O-rings may be attached. Moreover, although the example which attached the rubber pad integrally molded to each suction hole was shown in the said example, you may attach an independent rubber pad to each suction hole. In some cases, the O-ring and the rubber pad may be omitted. Moreover, it is better to reduce the weight by using a resin system that can be made lighter than metal (AL, SUS) as a material of the piston.

  Moreover, as long as there is no contradiction in the objective, a structure, etc., the embodiment shown by the said description and each figure can combine the description content of each other. In addition, the above description and the description of each drawing can be an independent embodiment even if it is a part of it, and the embodiment of the present invention is an embodiment in which the above description and each drawing are combined. It is not limited to.

1 Lid (first member)
2 Cylinder case (second member)
DESCRIPTION OF SYMBOLS 3 Integral rubber pad 4 Piston 5 One-touch joint 6 Air hose 7 Switch 8 Vacuum pump 9 Space where pressure P1 11 Space where pressure P2 12 Space where pressure P3 13 Space where pressure P0 14 Object (Adsorbed object)
15 Through hole 16 Volume (amount of suction when the vacuum pump 8 sucks the object 14)
100 Adsorber

Claims (4)

Multiple independent piston / cylinder pumps
A suction hole connected to the outside is formed on one end side of each cylinder,
An adsorber characterized in that the piston of the pump is driven and the object is adsorbed and released by the adsorption holes by applying a vacuum or a pressurized pressure to the other end side of each cylinder by a pressure-increasing / decreasing means. . The adsorber according to claim 1, wherein
Forming a connecting cavity for connecting each cylinder to the other end of the cylinder;
An adsorber characterized in that a vacuum or a pressurized pressure is applied to the connecting cavities by the pressurizing and depressurizing means. The adsorber according to claim 2, wherein
The piston is slidably accommodated in a plurality of cylinders provided in the cylinder case, and the suction hole having a smaller diameter than the cylinder connected to the outside is formed at one end of each cylinder. An adsorber comprising a plurality of independent piston / cylinder pumps by providing the connecting cavity for connecting cylinders. Equipped with multiple piston / cylinder pumps,
Connecting the plurality of pistons so as to integrally drive,
A suction hole connected to the outside is formed on one end side of each cylinder,
A plurality of pistons are driven simultaneously by applying a vacuum or a pressurized pressure to the other end of any one of the cylinders by driving a piston of any one of the pumps. An adsorber for adsorbing and releasing an object through an adsorption hole.

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