JP2008074069A - Method for making inspection frame and inspection frame forming system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable easy setting of an inspection area even though the shape of the inspection area is complex. <P>SOLUTION: The inspection data is created by converting into image data DXF data 3 of the punching surface of a wooden frame for punching an object to be inspected, showing on a display 10 the converted wooden frame image data and the master image data 2 as check quality standards, then changing the sizes and positions of the wooden frame image in response to the master image shown on the display 10, creating an image for assuming the condition of punching the object, and then sectioning the areas requiring the inspection and those requiring no inspection based on the punching assuming image. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a quality inspection of printed matter punched by a wooden frame, and in particular, an inspection frame creation method and an inspection frame for creating an inspection frame for separating an inspection area and an inspection unnecessary area when punching a complicated shape It relates to the production system.

Currently, as a printed matter inspection method, an area used as a printed matter is divided into an area not used, and only the used region is compared with a master image to determine whether printing is good or bad.
For example, when the printed product is a book, the vertical width and horizontal width of the book are almost determined except for those with special shapes, and the paper width to be printed is determined according to the size of the book. Therefore, a rectangular inspection area is set in advance for each paper width of the printed matter, and an inspection area corresponding to the paper width is set by selecting a paper width to be inspected from each paper width (for example, , See Patent Document 1).

On the other hand, when the printed product is a packaging box structure such as a box as shown in FIG. 4, the inspection area is not a simple rectangle as in the case of the book described above, but a complicated combination of straight lines, curves, and the like. It was a shape. However, as shown in FIG. 2, the packaging box structure is printed with letters 13 and patterns 14 being imprinted on a sheet of paper, and after printing is inspected, necessary parts are punched out using a wooden frame. However, the printed matter to be inspected does not display the cut line 16 or the fold line 17 as shown in FIG. 4, so it is difficult to distinguish the area used as a product from the unused area by punching. there were. Also, in order to make it possible to understand the area used as a product and the non-use area, it is possible to simultaneously print the cut line 16 and the fold line 17 as shown in FIG. There are not a few cases where the shift occurs, and unnecessary lines such as a cut line remain in the punched product, so that more defective products are generated. Therefore, as shown in FIG. 2, the operator operates the inspection apparatus without printing the cut line or the like, and sets the inspection area by combining straight lines and curves based on the image shown in FIG. 2 displayed on the display unit. However, only the set inspection area was inspected.
JP-A-9-99546

In the invention described in the above-mentioned Patent Document 1, the printed product is a book, and the paper width can be matched with the inspection area because of the special condition that only the edge of the paper piece is cut. As described above, when the inspection area is not a simple rectangle or when printing is performed with multiple impositions, the shape of the inspection area becomes complicated, and it is impossible to set the inspection area corresponding to the paper width.
In addition, as shown in FIG. 2, the printed matter that becomes a box after assembly is printed on a sheet or the like with characters and designs, and after the printed matter is inspected, a necessary portion is cut out with a wooden frame. However, since the cut line 16 and the fold line 17 as shown in FIG. 4 are not printed on the printed material, the inspection frame must be created while assuming the cut line. Furthermore, an inspector operates an operation panel provided in the inspection apparatus to create an inspection frame by combining several types of figures such as a straight line and a curved line, and it is necessary to perform complicated work. Further, as described above, since the inspection area is set manually, when the inspection area is set small, it is determined that defective printing is also good printing.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide an inspection frame creation method and an inspection frame creation system that can easily set an inspection region even if the shape of the inspection region is complicated.

An inspection frame creation method according to the present invention converts DXF data of a punched surface of a wooden frame that punches an object to be inspected into image data, converted wooden frame image data, master image data that is a criterion for pass / fail judgment, and Is displayed on the display unit, and the size and position of the wooden frame image are changed in correspondence with the master image displayed on the display unit, and a punching assumption image is created assuming a state of punching the inspection object. In addition, inspection frame data in which an inspection region and an inspection unnecessary region are divided is created based on the punched assumed image.
The inspection frame creation system according to the present invention includes a DXF data conversion means for converting DXF data of a punched surface of a wooden frame for punching an object to be inspected into wooden frame image data, and a tree converted by the DXF data conversion means. Display means for displaying frame image data and master image data serving as a criterion for pass / fail judgment on the display unit, and the user operating the operation unit, the position and size of the wooden frame image displayed on the display unit A punching assumption image creating unit that creates a punching assumption image that assumes a state in which a modified and changed wooden frame image and a master image are overlaid to punch out the inspection target object, and the punching assumption image creation unit creates An inspection frame data creating means for creating inspection frame data divided into an inspection area and an inspection unnecessary area based on the assumed punching image. It is an butterfly.
Therefore, since the inspection frame is created based on the DXF data of the punched surface of the wooden frame for punching the object to be inspected, the operator does not perform complicated work such as creating the inspection frame by combining straight lines and curves. May be. In addition, since the inspection frame is created by superimposing the master image and the wooden frame image and displaying the image in which the inspection object is punched, the inspection frame is not set by mistake.

  You may record the data of the size and position which changed the said wooden frame image when the said punching assumption image was produced, and the said punching assumption data.

  3. The inspection frame creation method according to claim 1, wherein the inspection area is divided into a plurality of inspection levels.

According to the inspection frame creation method and the inspection frame creation system according to the present invention, the DXF data of the punched surface of the wooden frame is converted into image data, and this wooden frame image and the master image are overlapped to form the inspection target object. Since the inspection frame data is created assuming that it is punched out, the inspection frame is not created by mistake.
Also, the DXF data of the punched surface of the wooden frame is converted into image data, and the inspection area and the inspection unnecessary area are set based on the wooden frame image, so an inspection frame is created by combining straight lines, curves, and the like. This eliminates the need for complicated operations, eliminates the need for complicated operations, and improves work efficiency.
Also, since the wooden frame image data is created based on highly versatile DXF data that can be output by most CAD, the wooden frame image data can be created regardless of the type of CAD program.

  Also, since the data of the changed size and position of the wooden frame image data when the assumed punching image was created is recorded, when using the same wooden frame with different master images, the size and position of the recorded wooden frame image By changing to, it is possible to create a punching assumed image. In addition, since the punching assumed image is recorded,

  In addition, since the inspection area is divided into a plurality of inspection levels, the inspection level of the area that is not directly visible when assembled into a box such as a sticking piece, insertion piece, or folding piece can be set low, Since it is possible to set a high inspection level for a printed part having a high degree of importance such as a name, it is possible to perform an inspection in consideration of the print contents and the state after assembly.

Embodiments of an inspection frame creation method and an inspection frame creation system according to the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram of an inspection frame creation system. FIG. 2 is a diagram for explaining the inspection object 12 in which characters 13,..., 13 and patterns 14,..., 14 are printed on a sheet of paper. Is shown. FIG. 3 is a diagram for explaining a punching surface of a wooden frame for punching the inspection object 12 shown in FIG. 2, where a solid line indicates a cutting line (cutting blade) 16 and a one-dot chain line indicates a folding line (folding blade). ) 17. FIG. 4 is a diagram assuming a state in which the sheet on which the packaging box structure is printed is punched out with a wooden frame. FIG. 5 is a diagram for explaining the inspection frame of the inspection object shown in FIG.

  The inspection frame creation method and the inspection frame creation system according to the invention of the present application are not necessary for the inspection area and the inspection as shown in FIG. 5 for the inspection object 12 printed as shown in FIG. 2 and punched out by the wooden frame. An inspection frame that divides the region is created.

  As shown in FIG. 1, the inspection frame creation system 1 according to the present invention comprises a DXF data conversion means 5, a recording means 6, a punching assumed image creation means 7, an inspection frame data creation means 8, and a display means 9. It is constituted by. And the operation part 4 which operates the test | inspection frame production system 1, the display part 10, and the test | inspection apparatus 11 are connected. The DXF data conversion means 5, the recording means 6, the punching assumed image creation means 7, the inspection frame data creation means 8, and the display means 9 may be provided in one computer, but a plurality of computers cooperate with each other. Thus, the inspection frame creation system 1 may be configured.

  The DXF data converting means 5 is means for converting the DXF data 3 into image data as shown in FIG. The format of the image data is image data of Bitmap format, TIFF format, JPEG format, GIF format, etc., but may be other raster image data or vector image data. The DXF data 3 is CAD data indicating the shape of a punched surface of a wooden frame for punching a printed material that is an object to be inspected. That is, the DXF data conversion means can know the position and shape of the blade on the punched surface. Also, DXF format data is a data format that can be used in most CAD programs, so it is highly versatile and can be converted to image data regardless of the type of CAD program. As described later, in order to superimpose the master image and the wooden frame image so that the two images can be recognized at the same time, the background data of the wooden frame image data is converted from DXF data to image data so that the background color becomes transparent. It is preferable to do. The background color of the master image data 2 may be transparent.

  The punching assumed image creating means 7 is used for the position of the wooden frame image displayed on the display unit 10 by the operator operating the operation unit 4 (up / down / left / right direction position / rotation direction position), enlargement / reduction, etc. A punching assumption image that assumes a state in which the size is changed, the changed wooden frame image and the master image of the inspection target object 12 shown in FIG. 10 is a means for displaying an assumed punching image shown in FIG.

The inspection frame data creating unit 8 is configured such that the operator operates the operation unit 4 with the punched assumed image displayed on the display unit 10 based on the assumed punched image created by the punched assumed image creating unit 7. This is a means for creating the inspection frame data in which the inspection area and the inspection unnecessary area are divided. Further, it is also means for transmitting the created inspection frame data to the inspection apparatus 11.
The inspection frame data creating means 8 may set a plurality of inspection levels for the inspection area. For example, as shown in FIG. 5, the inspection level of the region 20 that can be visually recognized from the outside when assembled into a box is set strongly, and the inspection level of the regions 21, 22, and 23 that cannot be visually recognized from outside when assembled into a box. Set weakly. In this way, the inspection area can be divided into a plurality of areas, and the inspection level can be set for each area. Therefore, the inspection accuracy of the area where the product name, product photo, company name, etc. are printed can be increased. The inspection accuracy of the piece 23, the insertion piece 21, and the folding piece 22 can be lowered.

  The recording means 6 is means for recording the position data of the wooden frame image changed by the punching assumed image creating means 7, the changed size data, the changed wooden frame image data, the punching assumption data, and the like. .

  The display unit 9 is a unit for displaying various images such as a master image, a wooden frame image, and a punching assumed image on the display unit 10.

  Next, the inspection frame creation method for printed matter will be described based on the flowchart of the inspection frame creation method shown in FIG.

  First, based on data created in advance, a master product that serves as a criterion for pass / fail judgment as shown in FIG. 2 is printed. In this master product, four packaging box structures are applied in many ways, and characters 13 and symbols 14 are printed on one packaging box structure. In FIG. 2, the characters 13 and the symbols 14 are simplified. And the said master product is image | photographed with an imaging part (not shown), and let the image | photographed image be the master image data 2 (refer FIG. 1). The master image data 2 is recorded in the recording means 6 provided in the examination frame creation device, other recording means, or a recording medium.

  The worker causes the inspection frame creation system 1 to read the master image data 2 corresponding to the inspection target object 12 for determining the quality of the printed material, and causes the display unit 10 to display the master image data 2 (S1).

Then, the DXF data 3 of the wooden frame for punching the inspection object 12 is read by the inspection frame creation system 1 (S2).
The read DXF data 3 is converted into the wooden frame image data shown in FIG. 3 by the DXF data converting means 5 (S3). The converted wooden frame image data is data of an image with a transparent background color.

  Based on the master image data 2 and the wooden frame image data, the display unit 9 displays the master image and the wooden frame image shown in FIGS. 2 and 3 in a superimposed manner (S4). At this time, the master image and the wooden frame image are provided in different layers, and the wooden frame image layer is displayed above the master image layer. By displaying in this way, it is easy to recognize the positional deviation and size difference of the wooden frame image with respect to the master image.

Next, the operator operates the operation unit 4 while looking at the master image and the wooden frame image displayed on the display unit 10, so that the inspection object is punched out as shown in FIG. The position and size of the frame image are changed (S5). In addition to changing the wooden frame image, the position and size of the master image may be changed.
Then, as shown in FIG. 4, the display unit 10 is operated so that the positions and sizes of the cut lines 16, the fold lines 17, etc. are matched with respect to the characters 13, the symbols 14, etc. A punching assumption image of the state is created, and the punching assumption image is displayed on the display unit 10 (S6).

When the punching assumption image is created, the data of the size (enlargement ratio, reduction ratio) obtained by changing the wooden frame image to generate the punching assumption image, the data of the changed position (the movement amount of the X axis and the Y axis) ), The punching assumed image data is recorded in the recording means 6 (S7). As a recording method, either or both of the DXF data 3 and the master image data 2 are recorded by associating the changed size data, the changed position data, and the punched assumed image data. Accordingly, it is possible to select the punching assumed image data based on the master image data 2 and to select the data of the position and size to be changed with respect to the wooden frame image from the DXF data 3.
When the punching assumed image is displayed on the display unit 10, the operation unit is operated to delete the fold line 17 (S8).

  Then, based on the cut line 16, an inspection frame in which the inspection area and the inspection unnecessary area are divided is created (S9). For example, an area surrounded by the cut line 16 in FIG. 4 is designated as an inspection area, and other areas are designated as inspection unnecessary areas. In this way, the position and size of the cut line 16 are not changed at all, and the cut line 16 may be set as an inspection frame. However, an area not surrounded by the area surrounded by the cut line 16 (inspected object) It is also possible to set an area expanded by a predetermined size (for example, an area of about 5 mm) as an inspection area and set a boundary between the expanded inspection area and an inspection unnecessary area as an inspection frame. . By widening the inspection frame by a predetermined size in this way, it is determined as a defective product even when there is a printing defect in a place that is not used as a product after punching, but the punching position at the time of punching is shifted In addition, since the quality of the punched product is determined, it is possible to determine the quality of the printed matter corresponding to the error generated by the punching operation.

After setting the inspection frame, the inspection area is divided into a plurality of inspection levels (S10). For example, the inspection level is set to a high inspection level for a printed part 20 such as a product name or a company name printed on the packaging box structure. The inspection level of the parts 23 and 22 such as the parts 23 and 22 hidden inside the packaging box structure is set low.
Then, as shown in FIG. 5, the inspection frame data divided into a plurality of inspection levels is recorded in the recording means 6 (S11) and transmitted to the inspection apparatus 11 (S12).

  As described above, since the inspection area for determining the quality of the printed material is determined based on the DXF data of the punched surface of the wooden frame, there is no need to manually create the inspection frame by operating the panel of the inspection apparatus. Therefore, there is no need to perform complicated work, an inspection frame can be created quickly, and work efficiency can be improved.

  Further, since the inspection frame data is recorded in the recording means 6, the search frame can be set based on the data recorded in the recording means 6 when the next lot is inspected. Even if the design of the master image is different, when punching using the same wooden frame, the DXF data of the punched surface of the wooden frame and the data of the changed size of the wooden frame image recorded in step 7 or changed An inspection frame can be set based on the position data.

It is a block diagram of an inspection frame creation system. It is a figure explaining the to-be-inspected object which printed the character and the pattern. It is a figure explaining the punching surface of a wooden frame. It is the figure which assumed the state which punches the sheet paper on which the packaging box structure body was printed with a wooden frame. It is a figure explaining the inspection frame and inspection level of a to-be-inspected object. It is a flowchart of an inspection frame creation method.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inspection frame creation system 2 Master image data 3 DXF data 4 Operation part 5 Data conversion means 6 Recording means 7 Punching assumption image creation means 8 Inspection frame data creation means 9 Display means 10 Display part 11 Inspection apparatus 12 Inspection object 13 Character 14 Design 16 Cut line 17 Fold line 18 Image 19 in which master image and wooden frame image are overlapped 19 Inspection area image 20 Area 21 visible from outside 21 Insert piece 22 Fold piece 23 Sticking piece

Claims (4)

Convert the DXF data of the punched surface of the wooden frame that punches the object to be inspected into image data,
Display the converted wooden frame image data and master image data that is a criterion for pass / fail judgment on the display unit,
Corresponding to the master image displayed on the display unit, change the size and position of the wooden frame image, create a punching assumption image assuming a state of punching the inspection object,
An inspection frame creation method for creating inspection frame data in which an inspection region and an inspection unnecessary region are divided based on the punched assumed image.   The inspection frame creation method according to claim 1, wherein data of the changed size and changed position of the wooden frame image when the assumed punching image is created and the punched assumption data are recorded.   3. The inspection frame creation method according to claim 1, wherein the inspection area is divided into a plurality of inspection levels. DXF data conversion means for converting DXF data of a punched surface of a wooden frame for punching an object to be inspected into wooden frame image data;
Display means for displaying on the display unit the wooden frame image data converted by the DXF data conversion means and master image data serving as a criterion for pass / fail judgment;
A state in which the user operates the operation unit to change the position and size of the wooden frame image displayed on the display unit, and to superimpose the changed wooden frame image and the master image to punch the object to be inspected Punching assumed image creating means for creating a punching assumed image assuming
Inspection frame creation comprising: inspection frame data creation means for creating inspection frame data divided into an inspection area and an inspection unnecessary area based on the assumed punching image created by the punching assumption image creation means system.

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