JP2532807Y2 - Plate transfer tool - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial robot which is attached to an industrial robot or the like, and has a suction surface applied to an uppermost portion of a laminated plate of paper, glass, ceramic, plastic or the like. The present invention relates to a plate material transfer tool for transferring plate materials one by one to a required position by a suction action of the plate material. 2. Description of the Related Art As a conventional means for sequentially transferring sheet materials one by one from the top of stacked plate materials or the like, a transfer tool having a suction hole communicating with a vacuum source is used. The suction surface to be opened is brought into contact with the upper surface of the plate material, and the vacuum source sucks the air so that the plate material is adsorbed on the suction surface so as to be transferred to a predetermined position. [0003] In the above-mentioned means, there is a case where the respective plate members are joined by static electricity, close contact, or the like, and a plurality of plate members are simultaneously attracted to the attracting surface of the transfer tool by an air suction operation. For this reason, there has been a problem that the transfer of a single plate material cannot be performed smoothly. In order to prevent this, tedious pre-processing such as carefully selecting the plate quality, subjecting each plate material to an electrostatic removal process, or, in the case of paper or the like, once separating each paper and then stacking again. Was needed. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has as its object to provide a plate material transfer tool capable of reliably transferring plate materials one by one from stacked plate materials. Is what you do. According to the present invention, a metal block is disposed above and below a ring-shaped piezoelectric element, and the two metal blocks sandwich the piezoelectric element to form a columnar Langevin type vibrator. A suction hole is formed at the center of the Langevin-type vibrator so as to penetrate in the vertical direction, an upper end of the suction hole is connected to a vacuum source, and an end face of the Langevin-type vibrator in which a lower end of the suction hole is opened is sucked. Wherein the suction surface is excited by applying an alternating voltage to the piezoelectric element. [0006] By the communication with the vacuum source, a suction action is generated on the suction surface of the Langevin type vibrator where the end of the suction hole is opened, and the suction surface is brought into contact with the uppermost surface of the laminated plate material. In addition to adsorbing the plate material, an alternating voltage is applied to the annular piezoelectric element to excite the adsorption surface. Thus, even if two or more suction plates are joined by static electricity or close contact, they are separated by the vibration, and only a single plate is sucked to the suction surface. Thereafter, the single plate is transferred to a predetermined position. Then, after being transferred to the predetermined position, the plate material is detached by releasing the communication with the vacuum source. 1 to 3 show an embodiment of a plate material transfer device T according to the present invention.
This will be described with reference to FIG. Reference numeral 1 denotes a Langevin type vibrator, which forms a piezoelectric laminate 3 by laminating a large number of annular piezoelectric elements 2 having electrodes formed on the upper and lower surfaces, and a cylindrical metal block 4a above and below the piezoelectric laminate 3. , 4b. [0008] A suction hole 10 is penetrated in the longitudinal center of the cylindrical Langevin type vibrator 1. The configuration of the suction hole 10 will be described. A screw hole 5 is formed at the center of the metal block 4a. The metal block 4b is provided with a through hole 6 having a screw hole only in the upper part. Then, the annular piezoelectric element 2 is externally fitted to a connection pipe 7 having a male screw formed on the peripheral surface, and a metal block 4 a
The annular piezoelectric element 2 is sandwiched and integrated with the metal blocks 4a and 4b by screwing the female screw on the upper part of the through hole 6 of the metal block 4b into the lower end portion. Thus, the inside of the connection pipe 7 and the metal block 4b
The suction hole 10 is formed with the through hole 6. A connecting beak 8 for connecting a conduit 20 is provided at one end of the connecting pipe 7, and the conduit 20 connects the suction hole 10 to a vacuum source P such as a vacuum pump via an electromagnetic valve V. On the other hand, the lower surface of the metal block 4b is used as a suction surface 11, and as shown in FIG. 3, an opening end 10a of the suction hole 10 is located at the center thereof, and the peripheral edge of the opening end 10a is equiangular. Four suction grooves 13 are formed at intervals, and four narrow grooves 12 are formed in the suction grooves 13 radially from the open end 10a.
Are formed, and each suction groove 13 is communicated with the opening end 10a. The suction area is enlarged by the suction grooves 13 to stably support the plate material described later. Further, the piezoelectric elements 2 constituting the piezoelectric laminate 3 of the Langevin type vibrator 1 having the above-mentioned configuration are connected in parallel, and an alternating voltage equal to the natural resonance frequency of the vibrator 1 is inputted, whereby The suction surface 11 is excited by the electrostrictive action of the element 2. The operation method of the plate material transfer tool T of the present invention will be described in detail below. By opening the solenoid valve V interposed in the conduit 20 to open the vacuum source P
0, the suction surface 11 of the Langevin type vibrator 1
Is brought into contact with the upper surface of the laminated plate material w of paper, glass, ceramic, plastic or the like. Then, in this contact state, an alternating voltage is applied to the annular piezoelectric element 2 to excite the suction surface 11. Thereby, the uppermost plate material w is sucked by the suction surface 11 while applying vibration. For this reason, even if it is joined to the plate material w of the next layer due to static electricity or adhesion, the vibration separates the upper and lower plate materials w, and only the uppermost plate material w is attracted to the attracting surface 11 as shown in FIG. Then, the plate material is transferred to a predetermined position as the plate material transfer tool T moves. Then, the electromagnetic valve V is switched, and the suction hole 10 communicates with the atmosphere, whereby the suction action of the suction surface 11 is released, and the plate material w is separated from the suction surface 11. Thus, a single plate material can always be transferred to a predetermined place, and by repeating this operation,
The plate materials can be sequentially transferred one by one from the upper surface of the laminated plate materials. According to the present invention, a suction hole is made to penetrate a longitudinal center portion of a Langevin type vibrator in which metal blocks are mounted above and below a piezoelectric element, and a suction surface is formed on a lower surface thereof. The suction holes communicate with a vacuum source to attract the plate material on the suction surface, and apply an alternating voltage to the piezoelectric element to excite the suction surface, thereby causing the two or more plate materials that have been attracted to be electrostatically or closely adhered. Can be separated by overcoming the influence of, and only a single plate material can be adsorbed. For this reason, the paper quality of the plate material is limited, troublesome pretreatment for separating the plate materials in advance can be simplified, the transfer operation of the plate material can be performed easily and reliably, and various kinds of operations including the transfer of the plate material can be performed. It has excellent effects such as being optimal for automation of the step.

[Brief description of the drawings] FIG. 1 is a perspective view of a plate transporter T of the present invention. FIG. 2 is a longitudinal sectional side view of the plate material transfer tool T of the present invention. FIG. 3 is a plan view of the plate material transfer tool T of the present invention. [Description of sign] T plate material transfer tool P vacuum source 1 Langevin type vibrator 2 Ring-shaped piezoelectric element 4a, 4b metal block 10 suction holes 11 Suction surface

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location H04R 17/10 330 H04R 17/10 330A

Claims (1)

(57) [Claims for registration of utility model] A metal block is arranged above and below a ring-shaped piezoelectric element, and the metal element sandwiches the piezoelectric element to form a columnar Langevin-type vibrator. A suction hole penetrating in the vertical direction is formed at the center of the transducer, the upper end of the suction hole is connected to a vacuum source, and the end face of the Langevin type vibrator having the lower end of the suction hole opened is used as an adsorption surface. A plate material transfer tool characterized in that a surface is excited by applying an alternating voltage to the piezoelectric element.