JP2002118038A - Manufacturing equipment of laminated ceramic capacitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminated ceramic capacitor manufacturing equipment, capable of transferring sheets stably, and specially preventing the sheets introduced into a punching/stacking device from varying in tension to ensure transfer stability for the sheets. SOLUTION: The equipment is used for manufacturing a laminated capacitor through the use of a green sheet which is held on a carrier film in close contact with it. A let-off gear 20, an electrode-printing device 30, a drying device 35, a punching/stacking device 40, and a take-up gear 50 are successively arranged. A suction roller 44 is arranged in the front of the punching/stacking device 40. The suction roller 44 prevents variation in tension that occurs in a carrier film in the drying device 35 from influencing the transfer of the sheets at the punching/stacking device 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to equipment for manufacturing a multilayer ceramic capacitor, and more particularly, to unwinding a green sheet made of ceramic, printing and drying an electrode, punching the sheet into a predetermined size, and stacking. The present invention relates to a manufacturing facility for a multilayer ceramic capacitor that is wound up.

[0002]

2. Description of the Related Art Hitherto, it has been considered that a multilayer ceramic capacitor is manufactured by using a method described in Japanese Patent Application Laid-Open No. 5-92406. In other words, a green sheet made of ceramic held on a carrier film,
As shown in FIG. 4, unwinding is performed at a predetermined speed from the unwinding device 1, an internal electrode is applied by the printing device 2, dried by the drying device 3, and the green sheet is wound around the winding device 5 together with the carrier film. That was to be done.

[0003] In such a manufacturing facility, tension rollers 13 and 14 are arranged in order to ensure transport stability.

[0004]

Incidentally, in the conventional manufacturing equipment, the span between the rollers 11 and 12 is long, and the carrier film is elongated by the heating of the drying device 3, and the tension between the rollers 11 and 12 is reduced. Constantly fluctuating. In such a state, it is extremely difficult to stabilize the intermittent stop position of the sheet after drying and obtain a constant tension. That is, the tension roller 14 is installed at a stage preceding the winding device 5, but the control of the tension roller 14 requires advanced technology, the equipment cost is high, and the effect is not always sufficient. . In particular, this is not preferable when another process (apparatus) is to be interposed between the drying apparatus 3 and the winding apparatus 5. Further, it is considered that the rollers 11 and 12 are suction rollers for the sake of transport stability, but it is hardly sufficient.

Accordingly, an object of the present invention is to provide a manufacturing apparatus for a multilayer ceramic capacitor capable of transporting a sheet in a stable state, in particular, a multilayer ceramic capacitor capable of securing a transport stability by blocking a tension variation of a sheet introduced into a punching / stacking apparatus. Is to provide.

[0006]

In order to achieve the above objects, the manufacturing equipment for a multilayer ceramic capacitor according to the present invention comprises an unwinding device, an electrode printing device, a drying device, a punching / stacking device and a winding device. Are sequentially arranged, and at least one suction roller is arranged at a preceding stage of the punching / stacking device.

[0007] In the manufacturing facility according to the present invention, it is preferable that at least one suction roller is disposed in each of the unwinding device and the winding device. In this manufacturing facility, a green sheet made of ceramic held on a carrier film is used.

In the manufacturing facility having the above-described configuration, the carrier film holding the sheet is conveyed while being held by the suction roller at the preceding stage of the punching / stacking apparatus. The carrier film is heated by a drying device arranged in front of the carrier film to cause a tension variation. The tension variation is interrupted by the suction roller and does not affect the punching / stacking device. Therefore, the green sheet is introduced into the punching / stacking apparatus in a stable transport state, and complicated tension control is not required.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a multilayer ceramic capacitor manufacturing apparatus according to an embodiment of the present invention.

(First Embodiment, see FIG. 1) The manufacturing equipment according to the first embodiment generally includes an unwinding device 20, an electrode printing device 30, a drying device 35, and a punching / stacking device 40.
And the winding device 50 are sequentially arranged.
The ceramic green sheet held in close contact with the carrier film is unwound from the unwinding device 20 at a predetermined speed, and the internal electrode paste is applied to the electrode printing device 30 in a predetermined shape. Dry at 35. Further, the green sheets are punched and laminated to a predetermined size by a punching / stacking device 40, and the remaining green sheets are taken up by a winding device 5 together with a carrier film.
Wound to zero.

By the way, in order to stabilize the conveyance of the green sheet, guide rollers 21, 22 and
The tension roller 23 and the suction roller 24 are installed, and the winding device 50 is provided with a suction roller 51, a tension roller 52, and guide rollers 53 and 54. Further, the drying device 35 and the punching / stacking device 40
Between them, guide rollers 41 and 42, a tension roller 43, a suction roller 44, and a guide roller 45 are provided. Further, a guide roller 46, a tension roller 47, and a guide roller 48 are provided between the punching / stacking device 40 and the winding device 50.

The suction rollers 24, 44, and 51 hold the back surface of the carrier film by suction through a number of suction holes formed on the outer peripheral surface of the roller, and are rotated and driven in synchronization with the working speed of the printing process and the punching / stacking process. And intermittently transport the carrier film. Tension rollers 23, 43, 4
Numerals 7 and 52 are elastically held by a tension applying means (not shown) so as to be movable in the direction of the arrow, and function so that the tension acting on the carrier film is always constant.

In such a manufacturing facility, in the punching / stacking device 40, a mark pre-marked on the carrier film is sensed by a camera (although other sensing methods may be employed), but at a precise position. It is necessary to punch green sheets and stack them with high accuracy. For that purpose, it is required that the stop position of the carrier film is accurate. However, since the carrier film is heated by the drying device 35 in the former stage, the drying device 35
There is a tendency for the tension to fluctuate greatly between the punch and the punching / stacking device 40. In the first embodiment, by installing the suction roller 44 in front of the punching / stacking device 40, it is possible to prevent the variation in tension from affecting the transport and stop of the carrier film in the punching / stacking device 40. Excluded. This suction roller 4
If the tension roller 4 is not installed, it is necessary to cancel the fluctuation of the tension by controlling the tension roller 43, and such control is complicated, expensive, and cannot always expect a sufficient effect. In addition, since the conveyance is stabilized by interposing the suction roller 44, the conveyance speed can be increased.

FIG. 2 shows a manufacturing facility according to a second embodiment. This manufacturing facility basically has the same configuration as that of the first embodiment.
Guide rollers 61 and 62 are provided before and after the suction roller 44.
Is provided. The operation and effect of the second embodiment are the same as those of the first embodiment, but in particular, the guide roller 6
The addition of 1, 62 has an advantage that the conveyance of the green sheet is further stabilized.

FIG. 3 shows a manufacturing facility according to a third embodiment. This manufacturing facility basically has the same configuration as that of the first embodiment.
The suction roller 44 is disposed immediately before the punching / stacking device 40, and the guide rollers 63 and 64 are disposed. The operation and effect of the third embodiment are the same as those of the first embodiment. In particular, since the suction roller 44 is disposed immediately before the punching / stacking device 40, the carrier film and the green sheet are stopped at more accurate positions. Can be done.

(Other Embodiments) The equipment for manufacturing a multilayer ceramic capacitor according to the present invention is not limited to the above-described embodiment, but can be variously modified within the scope of the gist.

In particular, the configuration of various devices such as the punching / stacking device 40 and the winding device 50 is arbitrary. Further, the tension roller and the guide roller can be arranged at appropriate positions, and their combination is also arbitrary.

[0018]

As is apparent from the above description, according to the present invention, since at least one suction roller is provided at the front stage of the punching / stacking device, the carrier film tension in the punching / stacking device is reduced by the variation in the tension of the carrier film. It is possible to avoid adversely affecting the transfer of the sheet, to facilitate the control of the tension, and to increase the transfer speed.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a manufacturing facility according to a first embodiment.

FIG. 2 is a schematic configuration diagram illustrating a manufacturing facility according to a second embodiment.

FIG. 3 is a schematic configuration diagram showing a manufacturing facility according to a third embodiment.

FIG. 4 is a schematic configuration diagram showing a conventional manufacturing facility.

[Explanation of symbols]

 Reference Signs List 20 unwinding device 24 suction roller 30 electrode printing device 35 drying device 40 punching / stacking device 44 suction roller 50 winding device 51 suction roller

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Satoru Izawa 2-26-10 Tenjin, Nagaokakyo-shi, Kyoto, Japan Inside Murata Manufacturing Co., Ltd. (72) Eiji Kano 2-26-10 Tenjin, Nagaokakyo-shi, Kyoto, Japan Stock Company F-term in Murata Manufacturing (reference) 5E082 AB03 BC40 FG06 FG26 LL02 MM11 MM13 MM15

Claims (3)

[Claims] An unwinding device, an electrode printing device, a drying device,
A punching / stacking device and a winding device are sequentially arranged, and at least one suction roller is disposed at a stage preceding the punching / stacking device. 2. The manufacturing equipment for a multilayer ceramic capacitor according to claim 1, wherein at least one suction roller is further provided in each of the unwinding device and the winding device. 3. The equipment for manufacturing a multilayer ceramic capacitor according to claim 1, wherein a green sheet made of ceramic held on a carrier film is used.