JP6261106B1 - Slitter - Google Patents

Abstract

There is provided a slitter capable of preventing metal powder derived from meshing between blades in a slit of a web material by shear cutting from adhering to the web product or removing the metal powder adhering to the web product. A first round blade 12 is disposed on a first blade shaft 11, and a second round blade 22 is disposed on a second blade shaft 21 in a pair with the first round blade 12. ing. The two round blades are engaged with each other while rotating in opposite directions, with the blade edges being applied with lateral pressure, and the web material W inserted between the two round blades is between the blade edges of the two round blades meshing with each other. It is slit by shear cutting. Magnets 41 and 51 are provided adjacent to the cutting edge of at least one of the first and second round blades 12 and 22. [Selection] Figure 1

Description

  The present invention relates to a slitter for slitting a web material such as paper or plastic film by shearing.

  When slitting a web material such as paper or plastic film, a slit by shear cutting (shearing) is generally employed in terms of cost, workability, quality, and the like.

  Conventionally, as a slitter that is slit by shearing, one or two or more first round blades are disposed on the first blade axis, and 1 on a second blade axis that is parallel or substantially parallel to the first blade axis. Alternatively, two or more second round blades are arranged to face each of the first round blades, and the first round blades and the second round blades of each set are placed under the application of the required lateral pressure. While being engaged with each other, the blade materials are rotated in the opposite directions around the respective blade axes, so that the web material inserted between the two round blades is shear-cut between the two blade edges engaged with each other. The thing of the structure made to slit is known (patent documents 1-2).

  However, in the shear cut, when the web material is slit, the two round blades rotate in opposite directions while meshing with the application of lateral pressure at the cutting edges, so that the metal derived from the meshing between the cutting edges of the two round blades. Powder is generated and this metal powder adheres to the web product, which is a slit web material, which adversely affects the quality of the product. For example, a film such as a film contaminated with metal powder cannot be used for battery-related or electrical material-related applications that require particularly strict electrical insulation.

  As for the above-mentioned problem, in order to remove the metal powder on the web product, measures such as installing a suction device, a magnet bar, etc. along the web product are conventionally taken on the downstream side of the slitter. This countermeasure has secondary problems such as an increase in the size of the apparatus and damage to the web product. In addition, it is also known that the fine cutting powder generated by the slit of the web material is removed by adhesion using an adhesive roller (Patent Document 3), but this is not a sufficient solution to this problem as described above.

Japanese Patent No. 3195597 JP-A-8-318494 (FIG. 3) Japanese Patent Laid-Open No. 6-269653

  In view of the above problems, the object of the present invention is to prevent the metal powder derived from the meshing between the cutting edges of both round blades from adhering to the web product or to adhere to the web product when the web material is slit by shear cutting. An object of the present invention is to provide a slitter which can remove metal powder.

In the slitter according to the present invention, one or more first round blades are disposed on the first blade shaft, and one or more second blade shafts are parallel or substantially parallel to the first blade shaft. Two round blades are arranged opposite each other in pairs with each first round blade, and the first round blade and the second round blade of each set are engaged with each other at the cutting edge of both round blades under application of a required lateral pressure. While being rotated in the opposite directions around each blade axis, the web material inserted between both round blades is slit by shear cutting between the cutting edges of both round blades meshing with each other , A slitter that attracts and magnetically attaches metal powder generated by the engagement between the cutting edges of both round blades to a magnet, the blade holder body supporting the first round blade, and the second round blade. A position holding member for holding at a predetermined position on the second blade axis, and the magnet It is attached to the blade holder body so as to be close to the cutting edge of the first round blade on the circumference concentric with the first round blade at a necessary interval or continuously, and concentric with the second round blade. It is attached to the position holding member so as to be close to the cutting edge of the second round blade at a required interval or continuously on the circumference .

  Further, as the side pressure applying mechanism, for example, a known spring mechanism such as a ring spring or a disc spring that biases one of the first round blade and the second round blade to the other, fluid pressure, or the like may be used.

  According to the first aspect of the present invention, when slitting a web material with a shear cut, the metal powder generated by rotating both round blades in opposite directions while meshing with the addition of a side pressure at their cutting edges is At least one of the first round blade and the second round blade, preferably attracted and magnetically attached by a magnet disposed in the vicinity of the cutting edge of each round blade, thereby both the slits in the web material slit by shear cutting. The metal powder generated from the engagement between the cutting edges of the round blades is attracted and magnetically attached to the magnet, thereby preventing the metal powder from adhering to the web product, or the web in the vicinity of the meshing portion of both round blades. The metal powder adhering to the product can be removed by attracting and magnetizing the magnet. For magnets that have attracted and magnetized a certain amount of metal powder, for example, the metal powder is removed if necessary, and the metal powder is replaced with a magnet that has not been magnetized, or the magnet that has not been magnetized. A magnet is attached and the blade holder and the spacer are exchanged.

1A and 1B are a schematic side view and a front schematic view, respectively, of a slitter according to a first embodiment of the present invention. 2A and 2B are a schematic side view and a schematic front view, respectively, of a slitter according to a second embodiment of the present invention.

  Below, this invention is demonstrated based on Example 1 and Example 2 from which the deployment aspect of a magnet differs.

  In the slitter shown in FIGS. 1 (A) and 1 (B), a plurality of thin and elastic first round blades 12 on the first blade shaft 11 are supported by the blade holder body 13 so as to be displaceable in the blade shaft direction. A plurality of second round blades 22 that are thick and have high rigidity on the second blade shaft 21 parallel to the first blade shaft 11 form a pair with each first round blade 12. Thus, they are arranged to face each other via a spacer 24 as a position holding member. The second round blade 22 may be integrated with the spacer.

  The first round blade 12 and the second round blade 22 facing each other are composed of a ring spring 31 interposed between the first round blade 12 and the lid member 15 of the blade holder body 13 that supports the first round blade 12. Under the application of the side pressure by the side pressure application mechanism, the web material W inserted between the two round blades meshes with each other while being rotated in the opposite directions around the respective blade axes while meshing with the blade edges of the two round blades. It will be slit by shear cutting between the cutting edges of both round blades. The ring spring 31 as the side pressure applying mechanism is arranged on a circumference concentric with the first round blade 12. In FIG. 1, only one set of the first round blade 12 and the second round blade 22 is shown for convenience of explanation.

  Furthermore, a plurality of magnets 41 can be attached to and detached from the blade holder main body 13 of the first round blade 12 at a required interval on a circumference concentric with the first round blade 12 and close to the cutting edge of the first round blade 12. It is inserted. Further, the spacer 24 adjacent to the second round blade 22 on the second blade shaft 21 is adjacent to the cutting edge of the second round blade 22 at a required interval on the circumference concentric with the second round blade 22. A plurality of magnets 51 are detachably fitted.

  According to the above configuration, the metal powder is generated by attracting and magnetizing to the magnets 41 and 51 the metal powder generated due to the engagement between the cutting edges of the two round blades in the slit of the web material W by shear cutting. It is possible to prevent the metal powder from adhering to the product, or to attract and magnetize the metal powder adhering to the web product in the vicinity of the meshing part of both round blades.

  2A and 2B, the slitter according to the second embodiment has the same basic configuration as that of the first embodiment, and the cutter holder main body 13 of the first round blade 12 is similar to the first embodiment. A plurality of magnets 41 are detachably fitted on the circumference concentric with the first round blade 12 at a necessary interval in the vicinity of the cutting edge of the first round blade 12.

  On the other hand, in the first embodiment, a plurality of magnets 51 are detachably fitted in the spacer 24 adjacent to the second round blade 22 on the second blade shaft 21 so as to be close to the cutting edge of the second round blade 22. On the other hand, in the second embodiment, as shown in FIGS. 2 (A) and 2 (B), the plurality of magnets 61 are attached to and detached from the second round blade 22 itself on the second blade shaft 21 close to the blade edge. It has been fitted.

  According to the above configuration, the metal powder generated by the engagement between the cutting edges of the two round blades in the slit of the web material W by the shear cut is attracted and magnetized to the magnets 41 and 61, so that the metal powder is It is possible to prevent the metal powder from adhering to the product, or to attract and magnetize the metal powder adhering to the web product in the vicinity of the meshing part of both round blades.

  It should be noted that the present invention is not limited to the above-described embodiment, and many other wide embodiments other than those described above are possible by various modifications and combinations within the scope of the object of the present invention and the claims. Needless to say, this is possible.

W Web Material 11 First Blade Shaft 12 First Round Blade 13 Blade Holder Body 15 Lid Member 21 Second Blade Shaft 22 Second Round Blade 24 Spacer 31 Ring Spring 41 Magnet 51 Magnet 61 Magnet

Claims (1)

One or more first round blades are disposed on the first blade axis, and one or more second round blades are each first on a second blade axis that is parallel or substantially parallel to the first blade axis. Each pair of round blades is arranged opposite to each other, and the first and second round blades of each set are engaged with each other at the tip of both round blades under the application of the required lateral pressure, with each blade axis as the center While being rotated in opposite directions, the web material inserted between both round blades is slit by shear cutting between the blade edges of both round blades meshing with each other, and between the blade edges of both round blades. A slitter that attracts and magnetically attaches metal powder generated from meshing to a magnet ,
A blade holder body for supporting the first round blade;
A position holding member for holding the second round blade in a predetermined position on the second blade axis;
Further comprising
The magnet is attached to the blade holder body so as to be close to the cutting edge of the first round blade at a necessary interval or continuously on a circumference concentric with the first round blade, and the second round blade. Attached to the position holding member so as to be close to the cutting edge of the second round blade at a required interval or continuously on a circumference concentric with the blade,
A slitter characterized by that .

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