JP5201687B2 - Automatic removal method of defective sheets in sheet winding - Google Patents

Description

  In the present invention, when a defective portion exists in the middle of sheet winding, the defective portion is automatically removed by removing the defective portion and joining the good and defective portions before and after the defective portion. It relates to the removal method.

  Conventionally, when a plastic sheet is wound by processing such as aluminum vapor deposition, a portion of poor vapor deposition is often included over several meters or several tens of meters in the wound roll. In this case, if there is a defective part in a slitter or the like in the subsequent process, the machine is stopped, the sheet of the defective part is manually removed, the non-defective part is bonded, joined, and wound up again.

However, the removal of the defective part and the bonding of the non-defective part cause wrinkles on the sheet to deteriorate the quality of the sheet, and the work time is increased and the working efficiency is lowered. Also in this bonding, the upper surface adhesive tape T ₁ by the upper surface adhesive tape applying device 30 and the lower surface adhesive tape T ₂ by the lower surface adhesive tape applying device 31 as shown in FIGS. 5 (a), 5 (b), and (c). However, it became more difficult to apply the double-sided adhesive tape on the sheet S, and the work efficiency was inevitably lowered. Therefore, there is a need to automate the removal of defective parts and the joining and winding of non-defective parts, and a method has been proposed in which the defective parts are automatically removed by reading the markings in the next process using the markings as a mark ( For example, see Patent Document 1), however, this method has a problem that the accuracy of marking due to meandering or expansion / contraction of the film is uncertain, and there is a problem that it cannot be put into practical use in a work environment where the process can be marked.

  Therefore, the quality of the unrolled continuous sheet is inspected with a quality inspection machine, and the quality defect occurrence position of the continuous sheet is determined based on the quality information and the flow direction position and width direction position of the continuous sheet. The continuous sheet is temporarily decelerated and stopped at the above-mentioned quality defect occurrence position specified while unwinding the continuous sheet, and the quality defective part is cut on the joining base part in the flow direction and the final product width direction. Winding method in which the quality defective part is wound and removed separately as a quality defective product, and the continuous sheets of quality good parts are joined together on the joining base part and wound as a good continuous sheet Has been proposed. (For example, see Patent Documents 2 and 3)

Japanese Patent Laid-Open No. 10-45301 JP 2006-306509 A JP 2008-239316 A

  However, the removal of the poor quality part according to the above proposals is performed by jointing defective products on the joint base part and jointing continuous sheets of good quality parts, but simply joining the joint base part on the joint base part. As a result, there is no disclosure of a specific method of splicing and joining on the respective joining tables.

  In view of the actual situation as described above, the present invention automatically removes defective parts in the sheet winding process by finding a practical automatic removal method of defective sheets to cope with this, and joins good parts together. The purpose of the present invention is to make the take-up roll only of the sheet, improve the quality by eliminating the wrinkle of the sheet, improve the working efficiency in the processing in the subsequent process, and shorten the working time.

That is, the method of the present invention suitable for the above purpose is to unwind a sheet from a long winding roll, remove a defective portion of the unwound sheet and perform a good product before and after the defective portion. This is a method of joining the parts and winding only the non-defective part, and when there is a defective part in the sheet unwound from the long winding roll, the front part that can move the front and rear sheets on the front end side of the defective sheet part back and forth Adhere to the front and rear suction plates including the suction plate, cut the middle part of the front-side non-defective sheet and the rear-side defective sheet by running the knife (first step), and front the front-side good product-side sheet of the cut sheet Rotate the dancer roller located downstream of the front suction plate in the sheet flow direction while adsorbing to the part suction plate and moving it backward in the sheet flow direction, and then the defective sheet winding placed below. Attached to the handle Instead of the retracted suction plate, the rear side defective sheet suction plate is juxtaposed to the rear side defective sheet suction plate, and the cut end of the rear side defective sheet previously cut on both juxtaposed suction plates Adhering the adhesive tape to the defective sheet winding shaft and joining it to the defective sheet terminal, winding the defective sheet portion onto the defective sheet winding shaft (second step), then the long defective sheet When the part is not taken up, the sheet is stopped again, the front and rear sheets on the rear end side of the defective sheet part are adsorbed by the suction plate, and the intermediate part between the front side defective sheet and the rear side non-defective sheet is cut by running the knife. The front-side defective sheet is sucked and lowered by the suction plate raised first, and the dancer roller is rotated while the front-side non-defective sheet moved forward together with the suction plate (third). Process), lowered defect The front suction cups alongside suction cup of the rear side non-defective sheets, sticking an adhesive tape to a non-defective sheet cutting portion of the front side and the rear side at both adsorption platen ordered on behalf of the City of suction cups, the front and rear The non-defective sheet is joined and wound on a non-defective sheet take-up shaft (fourth step).

  According to the present invention, when pulling out the long winding roll, the defective portion is separated from the non-defective sheet portion and automatically removed and wound on the defective sheet take-up shaft side, and the wound non-defective sheet portion is temporarily retracted. After the removal, it can be moved forward and automatically pasted together with the removed good product sheet, and it can be wound only on the good product take-up shaft as a good product sheet, eliminating the need for manual removal of defective parts as in the past, It is very efficient because it is automatically performed by simple operation, and it is not necessary to stop the machine for a long time each time especially for removing defective parts, especially when processing aluminum deposition on plastic sheets etc. It has a remarkable effect of greatly improving time and work efficiency.

It is the schematic which shows the outline | summary of the apparatus used in the method of this invention, (a) is a general view, (b) is an adhesive hand tape sticking part. (A), (b), (c) is the schematic which shows the 1st, 2nd process of this invention method. (A), (b), (c) is an outline explanatory view showing the 3rd process of the method of the present invention. (A), (b), (c) is a schematic explanatory drawing which shows the 4th process of this invention method. (A), (b), (c) is explanatory drawing which shows each aspect of the conventional butt-sticking.

  Hereinafter, specific embodiments of the method of the present invention will be described with reference to the accompanying drawings. 1 (a) and 1 (b) show an outline of an apparatus for carrying out the method of the present invention. In FIG. 1 (a), (S) is a sheet such as a plastic sheet unwound from a long winding roll, In the figure, it is guided by the guide rolls 1 to 6 including the slack absorbing dancer roller 4 and sent to the next process. And the defective sheet part which makes the principal part of this invention is removed in the middle of sending to the next process by this unwinding. That is, in FIG. 1A, a unwinding-side rear suction plate 7 and a winding-side front suction plate 8 are provided between the guide roll 2 and the guide roll 3, and among these, the front suction plate 8 is It can be moved in the front-rear direction by the front-retracting device 8a, and a sheet-cutting cutter knife 9 such as a round blade traveling type is provided on the upper part of the joint between the front and rear suction disks 7, 8 as shown in FIG. The adhesive tape pull-out arm 10 that is driven to be pulled out by the endless belt 15 and the upper surface adhesive tape sticking arm 11 that can be rotated by 180 ° are arranged so as not to interfere with each other. Is to be done.

  On the other hand, between the front suction plate 8 and the guide roll 3, an adhesive tape pull-out arm 12 having the above-described configuration and an adhesive tape affixing arm 13 that can be rotated by 180 ° are further provided on the lower surface side of the sheet. The non-defective sheet is more reliably bonded in cooperation with the adhesive tape backing plate 14 on the side, and the winding side is passed through the following guide rolls 5 and 6 through the non-defective sheet loosening dancer roller 4 connected to the next process. The supply to is stabilized.

A defective sheet take-up shaft 20 for taking up a defective sheet is disposed between the guide roll 2 and the guide roll 3 below the suction plates 7 and 8, and the defective sheet S ₁ is disposed on the take-up shaft 20. And the terminal portion of the defective sheet S ₁ is sucked and held by the defective sheet winding side suction disk 25 via the guide rolls 21, 22, 23, and 24. ing. The defective sheet take-up side suction disk 25 includes a part of the guide rolls 23 and 24 and is appropriately provided with an elevating device 26 so that it can be moved up and down at any time. When the front suction plate 8 moves backward and moves between the guide roll 2 and the guide roll 3 of the sheet S unwound from the measuring roll, the defective sheet take-up side suction plate 25 is positioned instead of the suction plate 8. It is supposed to be.

  The present invention intends to remove a defective sheet portion in the sheet S unwound by using the above-described series of sheet unwinding and winding devices. Hereinafter, a specific removing method will be described with reference to FIGS. This will be described in order according to the steps shown in FIG.

  FIG. 2A shows the first step in a state where the long sheet S is unwound from the previous step and is sent from the guide roll 1, the guide roll 2, and the guide roll 3 to the winding side through the dancer roller 4. When the defective part is appropriately detected by the detecting means and the sheet feeding is stopped, the front and rear sheets of the non-defective sheet that has been sent out are separated from the unwinding side and the winding side. FIG. 4 shows a stage in which the sheet is sucked and held by the front and rear suction disks 7 and 8, the cutting knife 9 is lowered, and is moved to cut the sheet at the intermediate part, that is, the boundary part between the non-defective sheet and the defective sheet. When the rear end of the front non-defective sheet is separated from the front end of the rear defective sheet, as shown in FIG. 2B, the non-defective sheet becomes the front suction disk 8 on the non-defective winding side. Is held back by suction, The pressure-sensitive adhesive tape is pulled out from the surface-side pressure-sensitive adhesive tape drawing arm 10 and spread on the pressure-sensitive adhesive tape applying arm 11, which is rotated by 180 ° to operate and cut the pressure-sensitive adhesive tape at the cut intermediate portion, that is, at the cut end. Get ready to affix.

Thus, when the preparation for adhering the adhesive tape is completed as described above, the suction sheet 25 on the defective sheet take-up side, which has been continuously provided in the lower portion as shown in FIG. The end of the defective sheet S ₁ that is connected to the defective sheet winding roll wound around is lifted by suction, occupies the position occupied by the retracted front suction disk 8, and sticks from the previously prepared adhesive tape drawer arm The tape is pulled out, and the adhesive tape is applied to the intermediate portion cut by the sticking arm 11, that is, the front end of the defective sheet portion and the defective sheet end roll connected to the defective sheet winding roll wound around the defective sheet winding shaft at the bottom. Join and join parts together.

FIG. 3 shows a third step following the first and second steps in FIG. 2 in which the defective sheet front end of the sheet unwound by the long winding roll and the defective sheet end connected to the defective sheet winding roll are joined by an adhesive tape. , and the can (a) shows a state in which defective sheet S ₁ joined by the is taken defective sheet winding shaft 20 wound, (b) the defective sheet portion of the sheet S unwound from Nagashakumaki roll For cutting as described above at the boundary between the defective sheet and the non-defective sheet in the middle between the two suction plates 7 and 25 that are juxtaposed as a stage when the defective portion is finished after being wound on the defective sheet winding shaft 20 for a predetermined length. A state in which the sheet is cut by the cutter 9 is shown.

  When the sheet is cut by the cutter, the defective sheet suction plate 25 is lowered as shown in FIG. 3 (c), and the upper surface adhesive tape drawing arm 10 and the adhesive tape applying arm 11 are rotated by 180 ° for application. Out of alignment position. FIG. 4 shows the stage of the fourth step after the defective sheet suction disk is lowered and the removal of the defective sheet portion is finished. FIG. 4 (a) shows the front suction on the non-defective sheet side that has been retreated. The board 8 moves forward, returns to the original position again, and is juxtaposed with the rear suction board 7. In this state, the rear end of the non-defective sheet on the front suction plate 8 side and the front end of the non-defective sheet on the rear suction plate 7 side are joined on the front and rear suction plates 7 and 8 by the adhesive tape sticking arm 11 on the upper surface. Join the joint with adhesive tape. When the application of the adhesive tape from the upper surface is completed, the adhesive tape application from the lower surface side is applied to the lower surface side adhesive tape application arm 13 and the upper lower adhesive tape receiving plate 14 in the middle of the transition to the winding side in order to ensure the joining. Is carried out in cooperation.

  In FIG. 4B, the upper surface bonding portion is transferred to the lower surface adhesive tape, the lower surface adhesive tape application arm 13 on the lower surface side of the sheet is raised, and sandwiched between the upper lower surface adhesive tape receiving plate 14 and the adhesive tape is applied from above and below. Affix it. Thus, the non-defective sheet is joined on the front and rear suction plates as shown in FIG. 4C and wound up as a continuous non-defective sheet, and only the non-defective sheet from which the defective sheet portion has been removed is thus obtained. Winding is performed.

  As described above, in the method of the present invention, when there is a defective portion in the sheet sent from the long winding roll through a series of steps, the defective portion is removed and only the non-defective sheet is wound. It can be used for surface processing such as slitting or aluminum deposition as a take-up roll.

4: Dancer roller 7: Unwinding side rear suction board 8: Winding side front suction board 9: Knife (cutting cutter)
DESCRIPTION OF SYMBOLS 10: Upper surface adhesive tape drawer arm 11: Upper surface adhesive tape sticking arm 12: Lower surface adhesive tape drawer arm 13: Lower surface adhesive tape sticking arm 14: Lower surface adhesive tape receiving plate 20: Bad sheet take-up shaft 25: Bad sheet suction disk

Claims (1)

When unwinding a sheet from a long roll and performing surface processing of the slit or sheet, the defective part of the unwound sheet is removed, and the non-defective part before and after the defective part is joined to wind up only the non-defective part. Because
When there is a defective part in the sheet unwound from the long winding roll, the front and rear suction sheets including the front suction disk that can move back and forth are moved to the front and back of the defective part. And cut the middle part of the rear side defective sheet by knife running,
The non-defective sheet on the front side of the cut sheet is attracted to the front suction plate and moved back in the sheet flow direction, and the dancer roller arranged downstream of the front suction plate in the sheet flow direction is rotated. After the failure, the defective sheet suction disk provided along with the defective sheet take-up shaft disposed below is raised and juxtaposed to the rear-side defective sheet suction disk instead of the retracted suction disk. Adhering the adhesive tape to the cut end of the rear-side defective sheet that was previously cut and joining it to the defective sheet end that is wound around the defective sheet take-up shaft, the defective sheet take-up shaft Winding on
When the defective sheet portion of the long roll is no longer taken up, the sheet is stopped again, and the front and rear sheets on the rear end side of the defective sheet portion are adsorbed by the suction disk, respectively, and the front-side defective sheet and the rear-side non-defective sheet Cutting the intermediate part by knife running, adsorbing and lowering the front side defective sheet to the defective sheet suction plate raised first, while moving the front side good product sheet that was retracted forward together with the suction plate , Rotate the dancer roller,
In place of the lowered defective sheet suction plate, the front suction plate is aligned with the suction plate for the non-defective sheet on the rear side, and adhesive tape is affixed to the front and rear non-defective sheet cutting parts on the two suction plates. A method for automatically removing defective sheets in sheet winding, wherein the front and rear non-defective sheets are joined and wound on a non-defective sheet winding shaft.

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