JP2008016752A - Manufacturing apparatus of laminated electronic component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing apparatus of laminated electronic components which can form highly accurate electrode patterns. <P>SOLUTION: The manufacturing apparatus of laminated electronic components is provided with: a carrier 14 composed of rotatably connecting a plurality of bases 13 having smooth surfaces on their upper surfaces; a winding-out/supply means 10 for applying prescribed tension to a green sheet 7, and supplying the green sheet 7; an adhesive application means 11 for applying an adhesive to the green sheet 7 supplied from the winding-out/supply means 10; a depression means 12 for depressing the green sheet 7 to the bases 13; a cutting means 16 for cutting out the green sheet 7 into pieces in each base 13; an electrode formation means 18 for forming electrodes on the green sheet 7; and a drying means 21 for drying the green sheet 7. A part of the carrier 14 is composed of a horizontal carrying part 19, and the electrode forming means 18 is formed on the horizontal carrying part 19. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an apparatus for manufacturing a multilayer electronic component such as a ceramic multilayer capacitor.

  An example of an apparatus for manufacturing a multilayer electronic component is shown in FIG.

  Unwinding supply means 1 for supplying the green sheet 1b with a predetermined tension, a lamination drum 2 for forming a laminate by winding the green sheet 1b around the outer peripheral surface, and a rotation angle for detecting the rotation angle of the lamination drum 2 By providing the detection device 3 and the internal electrode printing unit 4 that forms the internal electrode on the green sheet 1b wound around the lamination drum 2 while winding the green sheet 1b based on the information of the rotation angle detection device 3, the high speed is achieved. A laminate can be produced.

As prior art document information relating to the invention of this application, for example, Patent Document 1 is known.
JP 2003-217992 A

  In the above-described conventional example, the plane 6 shown in FIG. 3 is obtained in order to perform printing by the electrode printing unit 4 by forming the stacking drum 2 forming the stack as a polyhedron. Therefore, since the plane 5 is intermittently driven, it is necessary to print on the plane 6 with respect to the plane 6, and when an ejection unit such as an ink jet method is selected for the electrode printing unit 4, coating is performed with respect to the rotation direction of the laminated drum 2. Since the distances are different, there is a problem that a predetermined pattern cannot be obtained like the electrode pattern shown in FIG.

  Therefore, an object of the present invention is to improve the accuracy of an electrode pattern.

  In order to achieve the above object, the present invention supplies a conveyance unit formed by rotatably connecting a plurality of bases each having a smooth surface on the upper surface, and a green sheet to which tension is applied on the bases. Unwinding supply means, adhesive applying means for applying an adhesive to the green sheet supplied from the unwinding supply means, pressing means for pressing the green sheet against the base, and the green sheet as the base Cutting means for cutting each table, position detecting means for detecting the position of the green sheet, electrode forming means for forming an electrode on the green sheet from information of the position detecting means, and drying means for drying the green sheet A device for manufacturing a multilayer electronic component comprising: a part of the transport unit comprising a horizontal transport unit, wherein the horizontal transport unit is provided with electrode forming means. And since a part of said conveyance part was set as the horizontal conveyance part, and it was set as the structure which provided the electrode formation means in the said horizontal conveyance part, an electrode pattern can be formed in a horizontal conveyance part, As a result, the precision of an electrode pattern is improved. Can be increased.

  The multilayer electronic component manufacturing apparatus of the present invention supplies a conveyance unit formed by rotatably connecting a plurality of bases each having a smooth surface on an upper surface, and a green sheet to which tension is applied on the bases. Unwinding supply means, adhesive application means for applying an adhesive to the green sheet supplied from the unwinding supply means, pressing means for pressing the green sheet against the base, and the green sheet as the base Cutting means for cutting every time, position detecting means for detecting the position of the green sheet, electrode forming means for forming an electrode on the green sheet from information of the position detecting means, and drying means for drying the green sheet; The apparatus for manufacturing a laminated electronic component having a structure in which an electrode forming unit is provided with a part of the transport unit as a horizontal transport unit. By arranging a part of this transport unit as a horizontal transport unit and arranging the electrode forming means so as to be orthogonal to the transport direction, for example, by selecting an ejection method such as an ink jet method for the electrode forming unit, continuous transport is performed. However, it is possible to form the electrode pattern with high accuracy without correcting the green sheet on the base.

  Hereinafter, an embodiment of the present invention will be described with reference to FIG.

  FIG. 1 is a side view of a multilayer electronic component manufacturing apparatus according to an embodiment of the present invention. The green sheet 7 supplied to the apparatus is supplied from a sheet roll 8 around which the green sheet 7 is wound, and an unwinding supply means 10 including an unwinding amount adjusting device 9 including an unwinding amount and tension adjusting means of the green sheet 7. The The green sheet 7 supplied from the unwinding supply means 10 is supplied to the adhesive application means 11, and the adhesive indicated by the broken line is applied to the entire surface. In this embodiment, the spray method is selected as the method for applying the adhesive, but it may be applied by a roller. This adhesive application means 11 is installed substantially vertically below the green sheet 7 and is supplied to the pressing means 12 with the adhesive application surface facing downward. In this way, by making the adhesive application surface downward, it is possible to prevent the adhesion of dust after application of the adhesive, and thus it is possible to reduce stacking faults.

  The green sheet 7 supplied to the pressing unit 12 is reversed by the pressing unit 12, the adhesive application surface becomes the upper surface side, and is further pasted by pressing to the base 13. The pressing means 12 is a roller made of an elastic body such as rubber or silicon, so that the reverse of the adhesive application surface of the green sheet 7 and the pressing to the base 13 can be performed simultaneously. Furthermore, by providing the pressing means 12 with a heating means, the adhesion to the base 13 can be made stronger, so that the positional deviation of the green sheet 7 can be prevented.

  In the present embodiment, the green sheet 7 is not directly bonded / fixed to the base 13, but a foam release sheet whose adhesiveness is reduced by foaming both surfaces by heating is placed on a thin iron plate, and the foam release The green sheet 7 was pressed and adhered to the sheet by the pressing means 12. The iron plate is fixed at a fixed position by a magnet embedded in the base 13 and a locking block arranged at the corner.

  In addition, the base 13 is rotatably connected to both ends thereof, and constitutes a closed loop-shaped transport unit 14 as a whole. The green sheet 7 that has passed through a plurality of working means, which will be described later, is returned to the pressing means 12 again by the transport unit 14 and the lamination process is repeated.

  The green sheet 7 attached to the base 13 is cut into pieces having a predetermined shape for each base 13 by the cutting means 16. The cutting means 16 can be provided with a heating mechanism to prevent the green sheet 7 from being displaced at the time of cutting and to improve the cutting accuracy.

  The green sheet 7 cut into individual pieces by the cutting means 16 is conveyed by the base 13, and the green sheet 7 becomes the upper surface side of the base 13 via the first direction changing portion 17, and goes to the electrode forming means 18. Be transported. A position detection means 15 is provided immediately before the electrode forming means 18. The position detection means 15 may be a linear sensor, a photo sensor, or the like, or when a cutout or a hole is provided at the end of the green sheet 7, the image may be recognized using a camera or the like. Further, when a plurality of electrode forming means 18 are provided, it is possible to form the electrodes with higher accuracy by providing this position detecting means 15 for each electrode forming means 18.

  The electrode forming means 18 may be an ejection method such as an ink jet method or a gravure printing method. In the present embodiment, the electrode forming means 18 is the horizontal transport unit 19 that transports the base 13 horizontally. Therefore, since the green sheet 7 cut into individual pieces on the base 13 is transported in the horizontal direction, if the ink jet method or the gravure printing method is selected, the coating nozzle and the printing roll are moved in the transport direction of the base. The electrodes can be continuously printed on the green sheet 7 by arranging them so as to be orthogonal to each other. In this way, since the base is always conveyed in a certain direction (horizontal direction), the electrode pattern can be continuously and accurately applied to the green sheet 7 on the base 13 without any correction by the electrode forming means 18. It becomes possible to form. A plurality of electrode forming means 18 may be provided in consideration of the number of layers to be stacked and the number of electrode patterns.

  The green sheet 7 on which the electrode pattern is formed is conveyed by the base 13, conveyed to the second direction changing unit 20, changes the direction of the green sheet 7 to the lower surface side, and is conveyed again to the pressing means 12. . A part of the second direction changing portion 20 has a drying means 21 for heating, and drying of the electrode pattern formed by the electrode forming means 18 and an adhesive applied by the adhesive applying means 11. Dry. The drying means 21 is composed of a plurality of heating means so that an arbitrary temperature profile can be created. The temperature profile is set lower than the foaming temperature of the foam release sheet that fixes the green sheet 7 to the iron plate. Further, the drying means 21 covers the base 13 so that the electrode pattern can be dried in both oxidizing and reducing atmospheres, and can be dried by arbitrarily controlling the oxygen concentration and the nitrogen concentration. The drying means 21 may be provided immediately after the electrode forming means 18, and in order to create an arbitrary temperature profile, the length of the drying means 21 is appropriately designed to the second direction changing portion 20 and the subsequent horizontal conveying portion. To do.

  After the drying process, the green sheet 7 on the base 13 is conveyed again to the pressing means 12 and the above process is repeated several times.

  The above laminated body laminated a predetermined number of times is taken out from the base 13 together with the iron plate, a drying step for volatilizing and drying the binder of the green sheet 7, a pressing step for pressurizing the whole laminated body, and a predetermined size A multilayer electronic component is manufactured by firing through an individualization step that is cut into pieces.

  The above has been described by taking, for example, a multilayer ceramic capacitor as an example. However, the present invention can also be applied to other electronic components such as a multilayer substrate in which an arbitrary pattern is formed and laminated on a sheet-like component.

  An apparatus for manufacturing a multilayer electronic component according to the present invention includes a transport unit formed by rotatably connecting a plurality of bases having smooth surfaces on an upper surface, and unwinding to supply a green sheet with a predetermined tension. A supply means; an adhesive application means for applying an adhesive to the green sheet supplied from the unwind supply means; a pressing means for pressing the green sheet against the base; and a green sheet for each base. A multilayer electronic component manufacturing apparatus comprising a cutting means for cutting into pieces, an electrode forming means for forming an electrode on the green sheet, and a drying means for drying the green sheet, particularly a part of a transport section As a horizontal transfer section, an electrode forming means is provided. By arranging a part of this transport unit as a horizontal transport unit and arranging the electrode forming means so as to be orthogonal to the transport direction, for example, by selecting an ejection method such as an ink jet method for the electrode forming unit, continuous transport is performed. However, since the electrode pattern can be formed with high accuracy without correcting the green sheet on the base, it is useful for an apparatus for manufacturing a multilayer electronic component.

The side view of the manufacturing apparatus of the multilayer electronic component in one embodiment of this invention Side view of conventional equipment Schematic diagram showing an example of electrode pattern formation in a conventional device

Explanation of symbols

DESCRIPTION OF SYMBOLS 7 Green sheet 10 Unwinding supply means 11 Adhesive application means 12 Press means 13 Base 14 Conveyance part 15 Position detection means 16 Cutting means 18 Electrode formation means 19 Horizontal conveyance part 20 Second direction change part 21 Drying means

Claims (2)

From the conveyance part formed by connecting a plurality of bases having a smooth surface on the upper surface so as to be rotatable, unwinding supply means for supplying a green sheet with tension on the base, and from the unwinding supply means An adhesive applying means for applying an adhesive to the supplied green sheet; a pressing means for pressing the green sheet against the base; a cutting means for cutting the green sheet for each base; and An apparatus for manufacturing a multilayer electronic component, comprising: a position detecting means for detecting a position; an electrode forming means for forming an electrode on the green sheet from information of the position detecting means; and a drying means for drying the green sheet. An apparatus for manufacturing a multilayer electronic component, wherein a part of the transport unit is a horizontal transport unit, and the horizontal transport unit is provided with electrode forming means. 2. The multilayer electronic component manufacturing apparatus according to claim 1, wherein the electrode forming unit is a printing unit using an inkjet method.

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