KR20070035222A - Automatic stacking method of ceramic green sheet and automatic stacking apparatus thereof - Google Patents

Abstract

The present invention relates to a method and apparatus for automatically stacking a ceramic green sheet, and to automatically stacking a ceramic sheet using a bar code system that is preprogrammed for all design specifications such as the type and stacking order of the green sheet. In addition to preventing poor mixing of the green sheet, the process can be simplified and shortened. In addition, by providing an alignment mark and an directional mark in each ceramic green sheet, the position and the orientation can be confirmed when the ceramic green sheet is laminated on the lamination head.

The automatic ceramic green sheet stacking method according to the present invention comprises the steps of: assigning and classifying a plurality of ceramic green sheets to a plurality of magazines for each printed pattern type; Reading a bar code assigned to include design information for manufacturing the stacked electronic component; Drawing a ceramic green sheet from a predetermined magazine determined by the read barcode among the plurality of magazines, and transferring the ceramic green sheet in a predetermined stacking order determined by the barcode; Checking and aligning the position and orientation of the transferred ceramic green sheets; Stacking the aligned ceramic green sheets; And pressing the laminated ceramic green sheet to form the multilayer ceramic electronic component having a bar shape.

 Ceramic sheet, lamination, barcode, alignment mark, directional mark

Description

AUTOMATIC STACKING METHOD OF CERAMIC GREEN SHEET AND AUTOMATIC STACKING APPARATUS THEREOF

1A and 1B are flowcharts illustrating a method of stacking ceramic green sheets according to the related art.

Figure 2 is a block diagram of a ceramic green sheet automatic laminating apparatus according to the present invention

3A is a schematic diagram of a ceramic green sheet having a pair of alignment marks and a directional mark according to the present invention;

3B is a schematic diagram of a ceramic green sheet having two pairs of alignment marks and directional marks according to the present invention;

4 is an operation flowchart showing a method for automatically stacking ceramic green sheets according to the present invention.

<Description of Major Symbols in Drawing>

100: ceramic green sheet automatic lamination device

110: bar code system and interface

120: sheet sorting unit

121_1 to 121_n: First to nth magazines

122: sheet transport

130: sheet lamination

131: alignment unit 132: lamination and pressing unit

133: good and bad judgment unit

141: sheet sorting control unit 142: sheet stacking control unit

200, 300: Ceramic Green Sheet

210: Align Mark

310a: laminated first and second alignment marks 310b: printed alignment marks

215, 315: directional mark

The present invention relates to a method for automatically stacking a ceramic green sheet and a device thereof. In particular, the present invention relates to a bar code system that is preprogrammed for all design specifications such as the type and stacking order of a green sheet. The present invention relates to a method for automatically laminating a ceramic green sheet and to a device for automatically laminating the same.

In general, multilayer ceramic electronic components such as a multilayer ceramic substrate, a multilayer ceramic capacitor (MLCC), or a multilayer ceramic inductor (MLCI) are manufactured by a ceramic green sheet lamination process. At this time, the ceramic green sheet stacking process is a plurality of ceramic green sheets are laminated in a predetermined order and then compressed to form a single bar (bar) to complete a predetermined multilayer ceramic electronic component.

Then, with reference to the accompanying drawings will be described in more detail with respect to the conventional ceramic green sheet stacking method will be described for the problem.

1A and 1B are flowcharts illustrating a method of stacking ceramic green sheets according to the related art.

First, referring to FIG. 1A, a plurality of ceramic green sheets having various patterns in which printing is completed are classified by type. Here, the classified ceramic green sheets are classified into the first to fifth ceramic green sheets 10 to 50 according to the shape of the printed pattern, and the second to fifth ceramic green sheets as shown in FIG. 1A. On one surface of 20 to 50, pattern printing units 20b to 50b on which patterns are printed are formed. In addition, four holes 10a to 50a are provided at the peripheral parts of one side and the other side of the first to fifth ceramic green sheets 10 to 50. In this case, the holes 10a to 50a formed in the ceramic green sheets 10 to 50 are used as reference holes of the printing process, which is a process before lamination.

As described above, the ceramic green sheets having various patterns are classified by types, and a plurality of first to fifth ceramic green sheets 10 to 50 are manually assembled by an operator according to a design specification written on a lot card. Classify in Magazine.

FIG. 1B illustrates an example in which an operator or an automatic handler classifies the first to fifth ceramic green sheets 10 to 50 in a laminating order to form a bar according to a design specification indicated on a lot card.

The configuration of the bar is transferred from an automatic sorter to an automatic laminator and sheet-by-sheet (sheet by sheet), and then laminated to produce the bar immediately when the alignment accuracy of each sheet passes the standard.

The finished bar is then classified as good or bad and placed in a separate magazine and placed in a process transfer standby state.

However, according to the conventional ceramic green sheet lamination method as described above, the operator can visually check the design specification table directly on the lot card so that the operator may misunderstand, and when laminating sheets of various patterns, the direction of the sheets may be confusing and misleading. There was a problem that can be laminated.

On the other hand, as a prior art for sheet automatic lamination system, a system for automatically drawing and laminating the sheet assigned to the bar code by a separate control unit by assigning a bar code for each sheet has been devised, but such a system is to be laminated only After allocating barcodes to all sheets or magazines, a predetermined lamination process may be performed, resulting in a prolonged process time and a decrease in productivity.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to use a bar code system that is pre-programmed for all design specifications such as the type of ceramic green sheet, the stacking order, and the like. The control unit of the system, the sheet sorting unit, and the sheet stacking unit are mutually interfaced to automatically classify and stack the green sheets to meet the design specifications of the product. The present invention provides a method and apparatus for automatically stacking ceramic green sheets, which can be shortened.

In addition, another object of the present invention is to include an alignment mark (Align Mark) and a directional mark in each ceramic green sheet, and the automatic green ceramic lamination method and apparatus that can check the position and orientation when laminating the green sheet To provide.

According to an aspect of the present invention, there is provided a method of automatically stacking a ceramic green sheet for manufacturing a multilayer electronic component, the method comprising: classifying and assigning a plurality of ceramic green sheets to a plurality of magazines for each printed pattern type; Reading a bar code assigned to include design information for manufacturing the stacked electronic component; Drawing a ceramic green sheet from a predetermined magazine determined by the read barcode among the plurality of magazines, and transferring the ceramic green sheet in a predetermined stacking order determined by the barcode; Checking and aligning the position and orientation of the transferred ceramic green sheets; Stacking the aligned ceramic green sheets; And pressing the laminated ceramic green sheet to form the multilayer ceramic electronic component having a bar shape.

In addition, before stacking the aligned ceramic green sheet, characterized in that it further comprises the step of removing the film attached to the ceramic green sheet.

Here, the removing of the film attached to the ceramic green sheet may be performed by varying the thickness of the ceramic green sheet included in the barcode to automatically remove the film.

The method may further include determining whether two or more ceramic green sheets overlap each other before checking and aligning the position and the orientation of the transferred ceramic green sheets.

Here, the step of checking and aligning the position and orientation of the transferred ceramic green sheets may be performed through a camera.

In addition, the ceramic green sheet automatic lamination apparatus for manufacturing a multilayer electronic component according to the present invention for achieving the above object, the bar code system including design information for manufacturing the laminated electronic component; A sheet sorting unit which draws out a predetermined ceramic green sheet determined by the barcode system and transfers the ceramic green sheet in a predetermined stacking order determined by the barcode; A sheet stacking unit for checking and aligning the position and orientation of the ceramic green sheets transferred from the sheet sorting unit, and stacking and pressing the aligned ceramic green sheets; And a controller for interfacing with the barcode system and controlling the sheet sorting unit and the sheet stacking unit according to the design information.

Here, the sheet sorting unit includes a plurality of magazines for classifying and accommodating the plurality of ceramic green sheets having the various patterns by types, and extracts the ceramic green sheets from a predetermined magazine determined by the barcode system. It is done.

The sheet sorting unit may include a sheet conveying unit for extracting and transporting the ceramic green sheet from a predetermined magazine determined by the barcode system, wherein the sheet conveying unit is set by a barcode system from a plurality of magazines by an automatic handler. It is characterized by drawing out and transferring the green sheet.

Here, the sheet transport unit, characterized in that it comprises a vacuum adsorption device for transporting the ceramic green sheet by vacuum adsorption.

The sheet stacking unit may include a stacking head for stacking and pressing the ceramic green sheet, and the stacking head is variably operated according to the thickness information of the ceramic green sheet determined by the barcode system. It is characterized by automatically removing the film.

The control unit may include a sheet classification unit control unit and a sheet stacking unit control unit for controlling the sheet classification unit and the sheet stacking unit, respectively, according to the design information included in the barcode system. The stack control unit may be interfaced with each other to share information at all times.

In addition, the ceramic green sheet is characterized in that the alignment mark (Align mark) for positioning of the ceramic green sheet is printed or processed, the alignment mark, one side and the other peripheral portion of the ceramic green sheet Each one or two is characterized in that formed.

The ceramic green sheet may include a directional mark printed or processed on one side edge of the ceramic green sheet in order to determine the orientation of the ceramic green sheet.

Meanwhile, the multilayer electronic component may be any one of a group consisting of a multilayer ceramic substrate, a multilayer ceramic capacitor, and a multilayer ceramic inductor.

Accordingly, the present invention can automate the process of classifying and laminating the ceramic green sheet by applying a pre-programmed bar code system into one process, thereby preventing the mixing of the ceramic green sheet, as well as simplifying and shortening the process. .

In addition, when laminating the ceramic green sheet on the stacking head, the position and the orientation of the sheet may be checked based on the alignment mark and the directional mark provided in the ceramic green sheet to remove errors that may occur in the process.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention.

Ceramic Green Sheet Automatic Lamination Unit

Figure 2 is a block diagram of a ceramic green sheet automatic laminating apparatus according to an embodiment of the present invention.

As shown in FIG. 2, the ceramic green sheet automatic laminating apparatus 100 of the present invention is interfaced with the barcode system 110 and the barcode system 110 including all design information for manufacturing a multilayer electronic component. In response to the design information set by the bar code system 110, the control unit 141, 142 for controlling the sheet classification unit 120 and the sheet stacking unit 130 to be described later, and the signal of the control unit 141, 142 The sheet sorting unit 120 may be divided into a sheet sorting unit 120 for extracting and transferring a predetermined ceramic green sheet and a sheet stacking unit 130 for sorting, stacking, and pressing the ceramic green sheets transferred from the sheet sorting unit 120.

The multilayer electronic component that can be applied to the present invention is preferably any one of a group consisting of a multilayer ceramic substrate, a multilayer ceramic capacitor, and a multilayer ceramic inductor. Applicable will be obvious.

The barcode system 110 is a system that is pre-programmed to satisfy a design specification including all information such as the type, number of sheets, and the stacking order required for manufacturing a predetermined stacked electronic component, and stored in the barcode system 110. When a predetermined bar code corresponding to the program is read, the bar code system 110 operates a program corresponding to the bar code to control a command for all design specifications such as the type, number of sheets, and stacking order by the program. 141, 142).

The control unit 141 or 142 may control the sheet classifying unit 120 and the sheet stacking unit 130 according to the design information included in the barcode system 110, respectively. It includes a control unit 142, the bar code system 110, the sheet sorting unit control unit 141 and the sheet stacking unit control unit 142 is interfaced with each other to always share information.

The sheet sorting unit 120 extracts a predetermined ceramic green sheet determined by the bar code system 110 from a plurality of magazines 121_1... 121_n that classify and accommodate a plurality of ceramic green sheets. It serves to transfer the ceramic green sheet in a predetermined stacking order determined by the bar code.

The magazine 121_1... 121_n accommodates each type of green sheet in which various printing patterns such as A pattern, B pattern, C pattern, D pattern, E pattern, etc. are formed, and is automatically received by the sheet sorting unit 120. A predetermined number of sheets may be loaded into each magazine 121_1... 121_n before being sorted and transported by hand or automatically.

In addition, the sheet sorting unit 120 includes a sheet conveying unit 122 for extracting and transporting the ceramic green sheet from a predetermined magazine 121_1... 121_n determined by the barcode system 110. The sheet conveying unit 122 includes a plurality of magazines accommodating a green sheet having various printing patterns such as A pattern, B pattern, C pattern, D pattern, E pattern, etc. by an automatic handler. The green sheet set by the barcode system 110 is loaded and transferred from 121_1... 121_n, wherein the green sheet is drawn and transferred in a predetermined order set by the barcode system 110. Done. As the sheet transporter 122, a vacuum adsorption device for transporting the ceramic green sheet by vacuum adsorption is preferable, and in particular, such a vacuum adsorption device is a sheet from the sheet sorter 120 to the sheet stacking part 130. It is also possible to check whether two or more sheets are attached to each other by static electricity or the like before the transfer.

The sheet stacking unit 130 checks and aligns the position and orientation of the ceramic green sheets transferred from the sheet sorting unit 120, and stacks and presses the aligned ceramic green sheets to form a completed bar. It serves to manufacture a laminated electronic component in a shape.

The sheet stacking unit 130 includes a sheet aligning unit 131, a sheet stacking and pressing unit 132, and a good / bad unit 133. The sheet aligning unit 131 primarily determines positioning and orientation based on alignment marks 210 and 310 and orientation marks 215 and 315 displayed or processed on the green sheet. .

3A and 3B are schematic views of ceramic green sheets 200 and 300 having alignment marks 210 and 310 and directional marks 215 and 315 according to the present invention. When the green sheet is laminated on the lamination head which will be described later with the alignment marks (210, 310) formed by one (refer to Figure 3a) or two (refer to Figure 3b) on one side and the other periphery It serves to determine the position of (200, 300). In addition, the ceramic green sheets 200 and 300 are provided with one directional mark 215 and 315 at one side or the other periphery thereof to prevent defects generated when the ceramic green sheets 200 and 300 are transferred in the reverse direction and stacked. The marks 215 and 315 may be printed on the ceramic green sheets 200 and 300 or processed such as punching.

The ceramic green sheet whose orientation is confirmed by passing through the sheet alignment unit 131 is transferred to the sheet stacking and pressing unit 132, and the sheet stacking and pressing unit 132 is predetermined by the barcode system 110. It serves to stack and press the plurality of sheets in the stacking order. On the other hand, a plurality of sheet stacking and pressing is carried out on the stacking head, and before the sheets are vacuum-compressed and stacked in the stacking head, a gap control servo control scheme is used to determine the sheet stacking and pressurization. According to the thickness information of the ceramic green sheet, the film is automatically peeled while operating variably, which is performed on a film separation table. In addition, the sheet stacking and pressing unit 132 also determines positioning and directivity on a secondary basis based on the alignment mark and the directional mark displayed on the green sheet.

The ceramic green sheet that has passed through the sheet stacking and pressing unit 132 may make a final determination for defects in the good / poor determination unit 133. Such determination may be performed by aligning the stacked ceramic green sheets with a camera or the like. After checking by the vision means, an error value is checked based on the alignment reference coordinate of the first laminated ceramic sheet to perform good or bad judgment.

Ceramic Green Sheet Automatic Lamination Method

4 is an operation flowchart showing a method of automatically stacking ceramic green sheets according to the present invention.

In the method of automatically stacking ceramic green sheets according to the present invention, first, a plurality of ceramic green sheets are allocated to the plurality of magazines 121_1... 121_n for each printed pattern type and classified.

Next, a bar code assigned to include design information for manufacturing a predetermined stacked electronic component is read (step S20). The barcode is pre-programmed and stored in the barcode system 110 to satisfy a design specification including all information such as the type, number of sheets, and the stacking order required for manufacturing a predetermined stacked electronic component. When a predetermined bar code corresponding to a program stored in the bar code system 110 is read, the bar code system 110 operates a program corresponding to the bar code so that all kinds of sheets, the number of sheets, and the stacking order by the program are operated. Commands for design specifications are sent to the controllers 141 and 142.

Next, ceramics are transferred from a predetermined magazine 121_1... 121_n by a substrate transporter 122 such as an automatic handler from a predetermined magazine 121_1 .. 121_n by an instruction of the controllers 141, 142 by the read barcode among the plurality of magazines 121_1. The green sheet is taken out and the ceramic green sheet is transferred in a predetermined stacking order determined by the bar code (step S30).

Next, the step of confirming and aligning the position and the orientation of the transferred ceramic green sheet is primarily performed (step S40). Meanwhile, before checking and aligning the position and orientation of the transferred ceramic green sheets as a primary, a process of determining whether two or more ceramic green sheets overlap each other by static electricity or the like may be further added.

Next, the aligned ceramic green sheets are stacked (step S50). Here, prior to laminating the aligned ceramic green sheet, it is preferable to automatically remove the film attached to the ceramic green sheet (step S50a), specifically, the ceramic green sheet transferred to the peeling table is The green sheet and the film are separated by the vacuum pressure and the mechanical mechanism, and the separated green sheet is moved while being adsorbed by the stacking head and automatically stacked in the stacking order determined by the barcode system 110 (step S50b). Here, the peeling of the film attached to the ceramic green sheet is preferably performed automatically by varying the operation according to the thickness information of the ceramic green sheet included in the barcode. Meanwhile, after confirming the alignment of the laminated ceramic green sheet as a vision, a second alignment process and a third final confirmation process of checking an error value based on the alignment reference coordinate of the first laminated ceramic green sheet may be performed ( Step S50c).

Finally, the laminated ceramic green sheet is pressed to form a multilayer ceramic electronic component having a predetermined bar shape (step S60), and then, whether the product is defective (step S70) is completed, and the manufacturing process is finished. That is, a plurality of kinds of ceramic green sheets have the same stacking order as the design specifications defined by the bar code assigned by the bar code system 110, and if the alignment of every sheet satisfies the requirements, it is recognized as a final good. do.

Meanwhile, all the process information is shared by the mutual interface between the barcode system 110 and the controllers 141 and 142 while the above-described processes are in progress.

The present invention is not limited to the above-described embodiments, but can be variously modified and changed by those skilled in the art, which should be regarded as included in the spirit and scope of the present invention as defined in the appended claims. something to do.

As described above, according to the method and apparatus for automatically stacking a ceramic green sheet according to the present invention, the barcode system is used by using a barcode system that is preprogrammed for all design specifications such as the type and stacking order of the ceramic green sheet. And the sheet sorting unit and the sheet stacking unit to interface with each other to automatically classify and stack the green sheet according to the design specification of the product, thereby preventing the green sheet mixing defect as well as simplifying and shortening the process. Can be planned.

In addition, the process management can be simplified by automating the sorting and lamination of sheets into one process, and the productivity of the process can be improved by reducing the process time required to complete a single product within 18 seconds.

In addition, each ceramic green sheet is provided with an alignment mark and a directional mark so that when the ceramic green sheet is laminated on the stacking head, the position and orientation of the ceramic green sheet can be checked, thereby preventing product defects in advance.

Claims (16)

In the method of automatically stacking ceramic green sheets for manufacturing a multilayer electronic component, Allocating a plurality of ceramic green sheets to a plurality of magazines according to the printed pattern types and classifying them; Reading a bar code assigned to include design information for manufacturing the stacked electronic component; Drawing a ceramic green sheet from a predetermined magazine determined by the read barcode among the plurality of magazines, and transferring the ceramic green sheet in a predetermined stacking order determined by the barcode; Checking and aligning the position and orientation of the transferred ceramic green sheets; Stacking the aligned ceramic green sheets; And And pressing the laminated ceramic green sheet to form the multilayer ceramic electronic component having a bar shape. The method of claim 1, And automatically removing the film adhered to the ceramic green sheet before laminating the aligned ceramic green sheet. The method of claim 2, wherein the removing of the film attached to the ceramic green sheet comprises: The ceramic green sheet automatic lamination method, characterized in that the automatic removal of the film by operating in accordance with the thickness information of the ceramic green sheet included in the barcode. The method of claim 1, And determining whether two or more ceramic green sheets overlap each other before checking and aligning the position and orientation of the transferred ceramic green sheets. The method of claim 1, Checking and aligning the position and the orientation of the transferred ceramic green sheet, ceramic green sheet automatic lamination method, characterized in that performed via a camera. In the ceramic green sheet automatic laminating apparatus for manufacturing a laminated electronic component, A barcode system including design information for manufacturing the stacked electronic component; A sheet sorting unit which draws out a predetermined ceramic green sheet determined by the barcode system and transfers the ceramic green sheet in a predetermined stacking order determined by the barcode; A sheet stacking unit for checking and aligning the position and orientation of the ceramic green sheets transferred from the sheet sorting unit, and stacking and pressing the aligned ceramic green sheets; And And a control unit for interfacing with the bar code system and controlling the sheet classifying unit and the sheet stacking unit according to the design information. The method of claim 6, wherein the sheet sorting unit: Automatic green lamination of ceramic green sheets, comprising: extracting ceramic green sheets from a predetermined magazine determined by the bar code system, including a plurality of magazines sorting and accommodating the plurality of ceramic green sheets having various patterns Device. The method of claim 7, wherein the sheet sorting unit: A sheet conveying unit for extracting and transporting the ceramic green sheet from a predetermined magazine determined by the barcode system, wherein the sheet conveying unit extracts and conveys the green sheet set by the barcode system from a plurality of magazines by an automatic handler. Ceramic green sheet automatic laminating apparatus, characterized in that. The method of claim 8, wherein the seat conveying unit: And a vacuum adsorption device for transporting the ceramic green sheets by vacuum adsorption. The method of claim 6, wherein the sheet stacking portion: Automatic lamination apparatus for a ceramic green sheet comprising a lamination head for laminating and pressing the ceramic green sheet. The method of claim 10, wherein the stacking head is: Ceramic lamination sheet automatic laminating apparatus characterized in that the automatic removal of the film by operating variably according to the thickness information of the ceramic green sheet determined by the bar code system. The method of claim 6, wherein the control unit: And a sheet classifying unit control unit and a sheet stacking unit control unit for controlling the sheet classifying unit and the sheet stacking unit, respectively, according to the design information included in the bar code system, wherein the barcode system, the sheet classifying unit control unit, and the sheet stacking unit control unit interface with each other. Ceramic green sheet automatic laminating apparatus, characterized in that sharing the information at all times. The method of claim 6, wherein the ceramic green sheet is: Alignment mark (Align mark) for positioning the ceramic green sheet is printed or processed, characterized in that the ceramic green sheet automatic lamination apparatus. The method of claim 13, wherein the alignment mark is: The ceramic green sheet automatic laminating apparatus, characterized in that one or two formed on one side and the other peripheral portion of the ceramic green sheet, respectively. The method of claim 13, wherein the ceramic green sheet is: The ceramic green sheet automatic laminating apparatus, characterized in that the directional mark is printed or processed on one side periphery of the ceramic green sheet to determine the orientation of the ceramic green sheet. The electronic component of claim 6, wherein the multilayer electronic component comprises: The ceramic green sheet automatic lamination apparatus, characterized in that any one of the group consisting of a multilayer ceramic substrate, a multilayer ceramic capacitor, a multilayer ceramic inductor.

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