JP3958332B2 - Web cutting and winding device - Google Patents

Description

  The present invention relates to a web cutting and winding apparatus in a winder that continuously winds a web around a core at a predetermined length.

  In the winding of the web, the web that is continuously fed from the previous process is usually wound around the core via a touch roller at a certain length, and is rewinded by pressing with a presser roller. However, in this rewinding, conventionally, an adhesive tape or the like is applied to the surface of the core, and the web from the fully wound roll wound with a certain length of web to the new core is pressed against the new core and immediately cut. The cutting end of the web is wound around a new core by cutting with a blade.

  However, when the take-up roll wound using the adhesive tape is unwound in the next process, the adhesive tape glue may adhere to the machine, and even when it is taken up, it sticks to the surface of the core. As the work of winding the tape increases and the cost of the tape increases, it becomes a problem. After that, a so-called no-tape winding method has been adopted in which an adhesive tape is not used for rewinding the web in a winder.

  In this no-tape method, as shown in FIG. 5, the web W continuously fed from the previous process is wound around the core 1 through the touch roller at a certain length, and is pressed by the press roller and rewinded. The web W in the middle from the full roll (not shown) wound with the length of the web to the new core 1 is cut by the cutting blade 12 and wound on the new core 1 using the winding guide roller 2. Is.

  However, in the conventional tape-less winding method, due to the physical properties of the web, even if the winding angle θ of the web wound around the new winding core is 3/4 round, that is, about 270 °, the new winding core is sufficient. It can be wound without wrinkles and without bending, but in the case of soft vinyl chloride, polyethylene, polyvinyl alcohol, etc., which are soft in the physical properties of the film, the tip of the cut web does not advance straight, and it is fed as wrinkles The wrinkles are wound around a new core, and the two and three layers are sequentially wound on the core, so that the wrinkles at the time of winding are transferred to the next wound web, thereby inhibiting the quality of the wound web. To happen.

For this reason, the present applicant has previously found that the winding angle is reduced and the new core is combined with a web guide plate that allows more than a predetermined amount of winding, and as shown in FIG. A cutting and winding apparatus has been proposed in which the cutting blade 13 is traversed using the guide plate 14 as a guide to wind the web W around the surface of the new core 1. (For example, see Patent Document 1)
JP 2003-89457 A

  However, when the traverse cutting device is used, even if the web guide plate is combined, the cut end of the web is obliquely cut for traverse cutting, and the length until the contact point between the new core and the touch roller is limited. Therefore, there is a limit to reliably prevent the generation of wrinkles at the tip of the web cutting portion. In particular, recently, since webs used for electronic parts and liquid crystal parts are required to have high quality and are expensive, a small loss must be avoided, and therefore further improvement in performance is desired.

  The present invention copes with the above-described actual situation, and in particular, the web is wound over 90% or more of the new core by a guide plate incorporating a guide roller and a guillotine blade wound around the new core, and the web is wound with a slight gap. By finding that it cuts, it aims at making the front-end | tip of the cut | interrupted web immediately wind around a new core, and preventing generation | occurrence | production of a wrinkle, a fold, etc.

That is, the feature of the present invention that meets the above-mentioned purpose is that, in a winder that continuously winds the web sent from the previous process to the core at a certain length, the web is cut and wound on the surface of the core without adhesive treatment. The guillotine blade is inserted into the guide plate so that it can protrude from the tip of the guillotine blade . The tip of the guide plate is arranged as close as possible to the contact point between the winding core and the winding guide roller so that the web can be wound around the winding core at least 5/6 rounds . The tip is a web guide.

  According to a second aspect of the present invention, an air flow passage is provided at the front end of the guide plate, and compressed air can be injected from the front end through the flow passage.

  A third aspect of the present invention is another preferred embodiment, characterized in that the tip end portion of the guide plate is subjected to chrome plating and fluororesin processing so as to improve the sliding property with the web.

  90% or more of the new core is wound by a winding guide roller for winding the web around the new core and a guide plate incorporating a guillotine blade in order to continuously wind the web around the core by the device of the present invention. Wrinkle, fold, etc. by winding the web over and cutting the web by protruding the guillotine blade from the tip of the guide plate with a slight gap, and immediately winding the cut web tip around the new core. And can be wound around a core.

  As described above, the device of the present invention is a guide plate in which a guillotine blade that enables cutting and winding of a web without adhesive treatment is sandwiched on the surface of the core in a winder that rewinds and winds to a new core. Is a cutting and winding device in which the tip of the guide is arranged between the winding core and the winding guide roller, and the tip of the guide is a web guide. Because it is possible, the winding end of the cut web can be brought close to the contact point between the winding core and the winding guide roller. When cutting and winding, the winding end reaches the contact point close to it. It is possible to wind around the core without wrinkles, and the remarkable effect of eliminating the problem of wrinkle transfer to two or three layers, which is strongly concerned with webs used for electronic parts that require high quality Have

  Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows an example of a main part of a web cutting and winding apparatus according to the present invention, in particular, an example of a cutting and winding part. Although not shown, a core 1 is fitted on a winding shaft provided between turrets on both sides. The web W, which is worn and continuously fed from the previous process, is wound around the core 1 between the winding guide roller 2 and the core 1, and the full roll moves as the turret rotates during full winding. Then, the web W between the full roll and the new core is pressed and cut to the new core 1 and the cutting terminal is wound around the new core, which is the same as the conventional cutting and winding device. In the apparatus, in particular, a guide plate 4 in which a guillotine blade 3 is incorporated so that it can be projected and retracted is disposed between the new core 1 and the winding guide roller 2 with its tip facing a gap that is a contact point between them. The guillotine blade 8 protrudes from the plate 4 to cut the web W. There.

  In this case, the web cut by the guillotine blade is a straight cut unlike the oblique cut of the traverse cut.

  Here, the guide plate 4 incorporating the guillotine blade 3 according to the present invention has a structure in which the guillotine blade 3 is inserted and held so as to be sandwiched between the guide plates 4 as shown in FIGS. The guillotine blade 3 protrudes or retracts from the tip of the guide plate 4 by the operation of the operating air cylinder 5 at the upper part of the blade and is immersed.

  FIG. 2 is when the guillotine blade 3 is immersed, and FIG. 3 is when the guillotine blade 3 protrudes.

  It should be noted that when the guide plate 4 is disposed, at least when the web is wound around the core 1, at least the surface of the core 1 is placed on the surface of the core 1 in order to minimize the angle in the range where the web is not wound on the surface of the core. It is suitable to set the winding around 5/6 or more, preferably 90% or more.

  Therefore, the guide plate 4 has the tip of the guide plate 4 as a contact between the core 1 and the roller 2 so that the web W can be wound around the core 1 at least 5/6 rounds, preferably 90% or more. It is important to be as close as possible.

  FIG. 4 shows a preferred embodiment of the guide plate. A compressed air source 6 is provided at the base end of the guide plate, a compressed air flow passage 7 is formed through the guide plate 4, and the distal end becomes a compressed air ejection nozzle. Although the plate 4 is not brought into direct contact, it is possible to perform the winding so that the cut winding end is sprayed onto the core 1 by the blown air so as not to be wrinkled.

  It is also preferable that the tip of the guide plate 4 is rounded. However, since the tip of the guide plate approaches the web, it is preferable that the tip of the guide plate is made of a material that is slippery by chrome plating, fluororesin processing, or the like. is there.

  Thus, even when the soft web continuously fed by the above apparatus is cut and wound, the soft web can be wound without being folded or folded.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the outline | summary of the cutting winding apparatus based on this invention, (A) is a side view, (B) is a cutting end aspect figure. The guide board of this invention cutting | wrapping winding apparatus principal part is shown, (A) is a front view of the state which immersed the guillotine blade, (B) is the same side view. The state which protruded the guillotine blade with the guide plate in FIG. 2 is shown, (A) is a front view , (B) is a side view. It is a side view which shows another aspect of the guide plate in this invention. Is a schematic view showing an aspect of only switching with cross winding of the conventional method. It is a schematic diagram which shows the aspect of another conventional method of cutting and winding.

Explanation of symbols

W: Web 1: Core (new core)
2: Wound guide roller 3: Guillotine blade 4: Guide plate 5: Working air cylinder 7: Air flow passage

Claims (3)

In a winder that continuously winds the web sent from the previous process around the core at fixed lengths, a guillotine blade that enables cutting and winding of the web without adhesive treatment on the surface of the core is used. The guide plate is sandwiched so that it can protrude from its tip , and a guillotine blade protrudes from the guide plate to cut the web in a straight line. A web cutting winding characterized in that it is disposed between the core and the winding guide roller as close as possible to the contact point so that winding is possible, and the tip of the guide plate serves as a web guide. Attachment device.   2. The web cutting and winding apparatus according to claim 1, wherein an air flow passage is provided at a tip portion of the guide plate, and compressed air can be injected from the tip portion through the flow passage.   3. The web cutting and winding device according to claim 1, wherein the guide plate tip has a good sliding property with the web by chrome plating, fluororesin processing or the like.

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