JP2006181669A - Small sheet manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small sheet manufacturing method, stably manufacturing a small sheet of high quality with high productivity by combination of a first cutting process, which is cross cutting having a high production speed, and a second cutting process of multiple-cutting two or more sheets in a simple structure. <P>SOLUTION: This small sheet manufacturing method includes: a first cutting process of cutting a continuously transported long sheet material in the direction orthogonal to the transport direction to form an intermediate body sheet having one width of a product size; and a second cutting process of cutting the intermediate body sheet in the direction orthogonal to the preceding cutting direction to make a product size. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for manufacturing image receiving paper such as sublimation materials, ink jet paper, cards, and sheet products of various predetermined sizes (in the present invention, these are collectively referred to as oval sheets).

1) In the conventional manufacturing method of a small sheet, as shown in Patent Document 1, a wide sheet (web) is drawn out from the original roll to cut a large sheet, and then a sheet of a product size sheet is cut. A method of trimming a sheet is common. Moreover, as shown in Patent Document 2, there is a method of feeding a wide sheet (web) from the original winding and performing slit cutting in the conveying direction and cross cutting in a direction perpendicular thereto. In this case, since the web is conveyed intermittently, the processing capacity is low. Japanese Patent Application Laid-Open No. 2003-259542 discloses a method for improving the above problem so that continuous processing can be performed with a constant web conveyance speed, and cross cutting is synchronized with the conveyance speed of a wide long sheet (web). Has been. In addition, there is a technology that uses a flexible rotary blade in perforation, but there is no example of incorporating this into a cutting inline.
JP-A-1-257596 JP-A-62-130038 Japanese Patent No. 1162726

  In the method shown in Patent Document 1, cosmetic cutting is used to cut out a small sheet from a large sheet that has been cut and accumulated. However, since the vertical cutting and horizontal cutting operations of the decorative cutting machine are generally manual operations, production efficiency is improved. Lower. In addition, it is difficult to ensure dimensional accuracy in perforation processing in large format processing. In addition, when a large sheet is cut from a wide sheet (web), the sheet support is likely to be deformed, and the perforation is performed on a sheet-by-sheet basis after one sheet is separated and conveyed. However, this makes the production equipment expensive, increases the installation area and workers, and increases the cost, resulting in a large sheet cutting loss and a reduced yield.

  Further, in the method shown in Patent Document 2, the change in the cross length of the sheet is described, but the switching of the slit width and the number of slits is not described. In general, in the case of an oval sheet, it is necessary to change the number of sheets to be cross-cut at the same time as the slit width is changed, and to switch the number of rows used in the sheet conveying conveyor. However, it is necessary to change the sheet width of the used conveyer or to remove the unused conveyer outside the apparatus, and it may take several weeks to set up and set the conditions. Further, in the production after switching, if there are many rows, a machine difference remains, and stable conveyance of the small-sized sheet is impaired. For this reason, generally, the minimum cutting size is about A5 size, and for the processing of a small-sized sheet such as a postcard size smaller than that, usually a decorative cutting is selected, and the efficiency is the same as described above. Becomes lower.

  Furthermore, the method shown in Patent Document 3 is a method of cutting a large sheet from a wide long sheet (web) by moving a mold in synchronization with a workpiece. Processing is large in size and expensive. Nonetheless, the production capacity is not necessarily stable at high speeds, so it is at a medium speed and the productivity is not so high.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing an oval sheet which can stably produce a high quality oval sheet having a simple structure and high productivity, excluding such disadvantages of the prior art.

  This object is achieved by any one of the following technical means (1) to (5).

  (1) A first cutting step of cutting an elongated sheet material that is continuously conveyed in a direction orthogonal to the conveying direction to form an intermediate sheet having one width of the product size, and the intermediate sheet first A method for producing an oval sheet, comprising a second cutting step of cutting the sheet in a direction perpendicular to the cutting direction to obtain a product size.

  (2) It has the process of removing the ear | edge part of one side of the said elongate sheet material by slitting beforehand, and it cut | disconnects a 2nd cutting process on the basis of the slitting line (1) The method for producing an oval sheet described in the item).

  (3) Item (1) or (2), characterized by having an accumulation step of accumulating the intermediate sheets in a phase in the same direction between the first cutting step and the second cutting step. The manufacturing method of the oval sheet of description.

  (4) The method according to any one of (1) to (3), further comprising a step of forming a perforation in the long sheet material in parallel with the conveying direction before the first cutting step. The manufacturing method of the oval sheet of description.

  (5) The method for manufacturing an oval sheet according to (4), wherein the perforation is formed with reference to the slitting line.

  According to the invention of claim 1 or 2 or 3 of the present invention, the long sheet material is cut at a fixed length and at a fixed position by a rotary cutter which performs speed synchronous control using numerical control, together with automatic NC makeup cutting. Can be linked together to enable size switching in a short time. In addition, stable high-speed and high-quality processing and cost reduction of a small-sized sheet reduced to a postcard size, A6 size, or the like can be realized.

  In addition, according to the invention of claim 4 or 5 of the present invention, accurate perforation processing can be stably performed on an oval sheet, and the production cost and yield and quality of an image receiving sheet coated with a sublimation material are drastically reduced. Improvement is realized.

  Hereinafter, an embodiment of a process using the method for producing an oval sheet of the present invention will be described. The description in this column does not limit the technical scope of the claims or the meaning of terms. In addition, the following assertive description in the embodiment of the present invention shows the best mode, and does not limit the meaning or technical scope of the terms of the present invention.

  FIG. 1 is a schematic configuration diagram showing a process using the method for producing an oval sheet of the present invention, (a) is a side view, (b) is a plan view thereof, and (c) is (b). FIG.

  A wide long sheet (web) 1 is fed out from the original winding 11 at a constant conveyance speed, and the curl is corrected by a decurler 15 through a splicer 14 and a defective part is detected by a surface defect inspection unit 16. The failure position in the long sheet is stored. When the original winding 11 approaches the rear end portion by the splicer 14, the front end portion of the wide long sheet (web) 1 from the original winding 12 is moved to the original winding 11 without stopping the process by the accumulator 15A. Is joined to the rear end portion of the wide long sheet (web) 1 and production is continued without interruption. Conversely, when the main roll 12 approaches the rear end portion, the front end portion of the wide long sheet (web) 1 from the main roll 11 is placed behind the wide long sheet (web) 1 from the main roll 12. In the same way, the production is continued without interruption. That is, when one original winding is finished and switched to the other original winding, production can be performed without interruption.

  Further, in the first cutting process, a wide long sheet (web) 1 is cut to a predetermined width by a rotary cutter unit 20 having rotary blades 21 and 22 having blades 21A and 22A meshing with each other. A strip sheet 2 is made as shown in a). The rotary cutter unit 20 is numerically controlled so that the peripheral speed of the rotary cutter matches the conveying speed of the long sheet (web) 1 at the moment when the long sheet (web) 1 is cut. By such numerical control, continuous cutting can be performed corresponding to cutting lengths (fixed lengths) of various dimensions. At this time, although not shown, it is also possible to detect and cut the fixed size mark for each of the small sheets 3 printed on the long sheet 1 by the detector 23.

  And, as shown in the side view of FIG. 2 (b), a predetermined number (for example, 20 sheets) of the strip product sheets 2 passes through the strip product speed increasing conveyor 24 that accelerates and collects the strip product sheet 2. Each time a predetermined number of sheets are collected in the strip sheet stacking unit 26 and stacked in a phase in the same direction, a plurality of stations are moved on the pallet rotor or pallet conveyor 28. When it is clear that the strip sheets including the position of the defect information detected and stored in step S2 are mixed, the stacked sheets 2A of the predetermined number of stacked strip sheets are discharged. The accumulated sheet 2A of the predetermined number of strip sheets discharged is sorted in a separate process, defective products are removed, non-defective products are added, and sent to a makeup cutting process, which is a second cutting process in the subsequent process. Then, a predetermined number of strip-sheet accumulations 2 </ b> A that are guaranteed to be non-defective are moved by the conveyor 29 to the direction changing section 31 to the makeup cutting process 30 that is the second cutting process.

  The stack 2A of strip sheets as shown in the side view of a predetermined number of rows in FIG. 2 (b) moved from the direction changing section 31 to the decorative cutting process 30 as the second cutting process is a work table. 37 is moved by a predetermined cut length (fixed length) by numerical control, and the accumulation 4A at the end portion 4 is cut off by the decorative cutting machine 30A having the upper blade 32 and the lower blade 33. As shown in the plan view of FIG. 3 (a) and the side view of FIG. 3 (b), the oval sheets 3 of the product are sequentially cut as a predetermined number of oval sheet stacks 3A, and after packaging, etc. It is sent to the process.

  Before the first cutting step, as will be described later with reference to FIG. 6, the ear portion 17B on one side of the long sheet 1 is cut off by the slitter 17, and the slitting line 17A is used as a reference in the second cutting step. When performing a certain trimming, one of the slits on the slitting line side can be omitted from the accumulated portion 4A of the end portion 4 generated before and after.

  In this manner, the strip product sheet 2 in which the oval sheets illustrated in FIG. 2A are connected and the oval sheet 3 illustrated in FIG. 3A are manufactured.

  In the oval sheet 3 manufactured by the method of the present invention, for example, an image receiving paper coated with a sublimation material may have perforations 18A at both ends as shown in the plan view of FIG. This is because the imprint of the image hangs outward from the perforation, and after printing, the outer side of the perforation is cut off to produce a borderless finish. It is intended to be used as a part corresponding to. The strip sheet 2 obtained in the first cutting step by connecting the oval sheets incorporating the perforation processing in this way is shown in the plan view of FIG. And the state accumulated in the strip product sheet | seat collection part 26 is shown by the side view of FIG.4 (b). Furthermore, the state cut | disconnected by the 2nd cutting process is shown by the side view of FIG.5 (b). FIG. 6 is a schematic explanatory view showing the steps of the method for manufacturing an oval sheet according to the present invention, in which a process for performing such a perforation on the long sheet 1 is incorporated.

  That is, FIG. 6 is a schematic configuration diagram showing an embodiment of a manufacturing method of a small sheet that can also be perforated according to the present invention, (a) is a side view, (b) is a plan view thereof, (C) is the AA view of (b).

  6 differs from FIG. 1 in that it has a step of removing the ear portion 17B on one side with the slitter 17 in advance before the first cutting step, and the second line is based on the slitting line 17A. In addition to the cutting step, a step 18 is provided for forming the perforation 18A in parallel with the conveying direction. Note that the slit processing and perforation processing can be performed simultaneously. Except for this point, the process is the same as that described in the schematic configuration diagram of FIG.

  In this way, by the oval cut in the processing order (manufacturing method) according to the method of the present invention described above, the process can be downsized, and the manufacturing cost of the apparatus is reduced and the productivity is improved and stabilized. Production of oval sheets is expected.

It is a schematic block diagram which shows the process using the manufacturing method of the oval sheet | seat of this invention, (a) is a side view, (b) is the top view, (c) is AA of (b). FIG. (A) is a top view which shows an example of the strip product sheet which connected the oval sheet, (b) is a side view which shows the state which accumulated the predetermined number of strip product sheets. (A) is a top view which shows an example of an oval sheet, (b) is a side view which shows the state which accumulated the predetermined number of oval sheets. (A) is a plan view of a strip product sheet in which perforated sheets incorporating perforation processing are connected, and (b) is a state in which a predetermined number of strip sheets connected in perforated processing are stacked. FIG. (A) is a plan view of an oval sheet incorporating perforation processing, and (b) is a side view showing a state in which a predetermined number of oval sheets incorporating perforation processing are accumulated. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram which shows embodiment of the manufacturing method of the oval sheet | seat which can also perform perforation processing of this invention, (a) is a side view, (b) is the top view, (c) is (b) It is an AA view of).

Explanation of symbols

1 Long sheet (web)
2 Strip sheet 2A Stack of strip sheets 3 Oval sheet 3A Accumulation of oval sheet 4 End 4A End stack 11, 12 Original volume 14 Splicer 15 Decaler 15A Accumulator 16 Surface defect inspection section 17 Slitter 17A Slitting Line 17B Ear part 18 Perforation processing part 18A Perforation 20 Rotary cutter part 21, 22 Rotating blade 21A, 22A blade 24 Strip sheet collection part (speed increasing conveyor)
26 Stacking unit for strip sheets 27 Abnormal product discharge mechanism 28 Pallet rotor or pallet conveyor 29 Conveyor 30 Makeup cutting process 30A Makeup cutting machine 31 Direction changing unit 32, 33 Upper blade 37 Work table

Claims (5)

A first cutting step of cutting a continuously conveyed long sheet material in a direction orthogonal to the conveying direction to form an intermediate sheet having one width of the product size and the intermediate sheet in the previous cutting direction A method for producing an oval sheet, comprising a second cutting step of cutting the sheet in a direction orthogonal to a product size to obtain a product size. 2. The method according to claim 1, further comprising a step of removing an ear portion on one side of the long sheet material by slitting, and performing the second cutting step based on the slitting line. Manufacturing method for small size sheets. 3. The oval sheet according to claim 1, further comprising an accumulation step of accumulating the intermediate sheets in a phase in the same direction between the first cutting step and the second cutting step. Production method. The oval sheet according to any one of claims 1 to 3, further comprising a step of forming a perforation in the long sheet material in parallel with the conveying direction before the first cutting step. Manufacturing method. The method according to claim 4, wherein the perforation is formed with reference to the slitting line.

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