JP3217794U - Slitter lower blade adjustment attachment - Google Patents

Abstract

In a slitter apparatus using a shear slit method, an attachment for adjusting a slitter lower blade capable of maintaining an appropriate groove width of the lower blade with a simple configuration is provided. A plurality of circular slitter upper blades 2 coaxially mounted on a rotating upper blade support shaft 21 and a lower blade support shaft 31 arranged in parallel to the upper blade support shaft. A slitter-type slitter that cuts the sheet material S to be continuously cut by sliding the peripheral side surfaces of the slitter into a long tape having a predetermined width. An attachment 4 for adjusting the slitter lower blade used in the apparatus, and between the peripheral side surface of the adjacent slitter lower blade facing the annular blade surface 32 projecting in an annular shape in the axial direction from the peripheral side surface of the slitter lower blade, A circular ring body having an outer peripheral surface having the same diameter and a predetermined width as that of the slitter lower blade is coaxially mounted without changing the interval between the slitter lower blades. [Selection] Figure 1

Description

  The present invention relates to a shear slit type slitter device that cuts a wide and thin sheet material such as metal foil, paper, film, etc. into a plurality of long tapes, and more particularly to an attachment for adjusting a slitter lower blade.

  Conventionally, a dedicated slitter device has been used to cut a wide and thin sheet material such as a metal foil, paper, and resin film into a long tape having a predetermined width. The slitter device axially supports a plurality of annular rotary blades at a predetermined pitch in the axial direction of a pair of rotary shafts arranged in parallel with each other, and slides the blade edges by rotation of the respective shafts, and sends them to the sliding portions. It was the structure which cut | disconnects by making a to-be-cut sheet material run continuously.

  As this slitter device, a slitter having a slitter lower blade (commonly called a Gobel lower blade) having a stepped wall surface formed by reducing the diameter in a circular shape and projecting in one axial direction, and a thin circular blade edge. There is a so-called shear slit type structure in which the blade edges are slid to join the upper blade.

  The slitter lower blade in the shear slit type slitter device has an appearance in which a plurality of grooves are formed on the side surface thereof at a predetermined pitch in the axial direction. The groove is formed by the cutting edge having the above-described configuration, the reduced diameter portion for supporting the shaft, and the wall surface of the adjacent slitter lower blade opposite to the cutting edge, and the cutting edge of the slitter upper blade enters the groove. The blade edges were joined together.

  In the slitter device having such a configuration, the width setting of the groove formed by the slitter lower blade is an important factor that affects the cutting quality. In other words, when the groove width is wide, there is a risk that the sheet material to be cut will bend down and wavy, sag, or wrinkled, and the quality may deteriorate due to the corner of the wall on the opposite side of the adjacent blade edge. It was. On the other hand, when the groove width is narrow, the position adjustment for inserting the upper slit blade into the groove for joining with the slitter lower blade becomes complicated.

  Further, in the slitter apparatus of the shear slit type, the cutting of the slitter lower blade is deteriorated due to the cumulative cutting distance of the sheet material to be cut, and therefore it is necessary to repeat the polishing process of the cutting edge at every predetermined cumulative cutting distance in order to recover it. there were. In this polishing process, each slitter lower blade is separated from its support shaft and the cutting edge surface is polished (cut) for each slitter lower blade. There was a cutting amount of about 0.3 to 0.5 mm.

  If this polishing process is repeated, the groove width becomes wider and the cutting quality cannot be maintained. Therefore, it is necessary to discard the slitter lower blade after a predetermined number of times of polishing and replace it with a new one. there were.

  The slitter apparatus corresponding to these problems was disclosed by patent document 1. FIG. This slitter device is provided with a receiving ring that is movable in the axial length direction along the outer peripheral surface of the small-diameter portion of the annular lower blade attached to the rotating shaft, and is provided with a notch on the receiving ring. Is configured to abut against the lower blade with biasing means. In addition, a pin for fixing the receiving ring is disposed on the small diameter portion of the annular lower blade. With this structure, when the upper blade is joined, the receiving ring is moved to widen the groove width, and after joining, the notch side of the receiving ring is brought into contact with the lower blade so that the groove width formed by the notch and the lower blade is appropriate. I was trying.

JP 2005-138232 A

However, the slitter device of Patent Document 1 has the following problems.
That is, not only the receiving ring and its urging means are arranged in the small diameter portion of the lower blade, but also a plurality of elements such as pins for fixing the receiving ring are arranged, so the configuration in the small diameter portion is complicated. . As a result, in addition to the load caused by the physical contact between the cutting edges, it is necessary to arrange a complicated configuration on all of the plurality of lower blades, and an increase in the failure rate in the entire structure cannot be ignored.

  Moreover, since it is necessary to arrange all the complicated components in the small diameter part of the lower blade, the dimension in the axial length direction of the small diameter part becomes longer and the dimension between the lower blades increases, resulting in a minimum width (for example, a width of 10 mm or less). ) Was not suitable for the cutting process.

  Furthermore, there has been a problem that the reassembly work to the rotating shaft after polishing the lower blade becomes complicated. More specifically, in the case of the shear slit method, the cutting of the slitter lower blade is deteriorated as described above, so that the blade edge is polished at every predetermined cumulative distance. Since the biasing means of the receiving ring corrects it, an appropriate groove width can be maintained. However, it is necessary to repeat the work of reassembling the receiving ring and the urging means to the rotating shaft every time the lower blade is polished, and this work may be performed on all the lower blades arranged on the rotating shaft. Was complicated.

  Therefore, the present invention has been made to solve the above-described problems, and in a slitter device using a shear slit method, a slitter lower blade capable of keeping the groove width of the lower blade properly while having a simple configuration. Provide an attachment for adjustment.

  In order to solve the above problems, an attachment for adjusting the slitter lower blade (hereinafter, abbreviated as “attachment”) according to the present invention is configured as follows.

  That is, a circular slitter upper blade formed by coaxially mounting a plurality of upper blade support shafts that rotate on a shaft at a predetermined interval, and a lower blade support shaft disposed in parallel with the upper blade support shaft. A slitter lower blade made up of a plurality of coaxial rings corresponding to the blade, and a shear slit method that cuts the sheet material to be cut continuously by sliding the peripheral side surfaces of each into a long tape of a predetermined width. An attachment for adjusting a slitter lower blade used in the slitter device, wherein the peripheral edge of an adjacent slitter lower blade facing the annular blade surface protruding in an annular shape in the direction along the support shaft from the peripheral side surface of the slitter lower blade. A circular ring body having the same diameter as the slitter lower blade and an outer peripheral surface set to a predetermined width is coaxially mounted between the side surfaces without changing the ringing interval between the adjacent slitter lower blades. To do It is characterized in.

  By the coaxial ringing of this attachment, the separation distance of the portion that forms the groove formed by the annular blade surface of the slitter lower blade and the peripheral side surface of the adjacent slitter lower blade facing it, in other words, narrowing the groove width, Become.

  Since the attachment is attached after a predetermined number of times of polishing of the slitter lower blade, the amount of protrusion of the annular blade surface of the slitter lower blade is reduced, for example, the outer circumference of the ring body in accordance with the amount of polishing and the number of times of polishing. It is preferable to prepare a variation in which a plurality of types of surface widths are set and the widths are appropriately changed.

  Further, the ring body of the attachment includes a boss portion that is externally mounted on the annular base portion to be mounted on the lower blade support shaft of the slitter lower blade without exceeding the axial length of the annular base portion, and a radius from the boss portion. And an annular flange portion having a predetermined thickness that extends in the direction and has the same diameter as the slitter lower blade and a smooth outer peripheral surface.

  Furthermore, the ring body of the attachment may be configured with at least the outer peripheral surface of the flange portion as a metal surface. Here, the reason why the outer peripheral surface of the flange portion is a metal surface is that depending on the sheet material to be cut, it may be required that the outer peripheral surface of the slitter lower blade to be contacted is a metal material. It is to do.

  The attachment according to the present invention configured as described above exhibits the following effects.

  An attachment made of a ring body is coaxially mounted between the peripheral surface of the adjacent slitter lower blade so as to face the annular blade surface of the slitter lower blade without changing the ringing interval between the adjacent slitter lower blades. Therefore, the groove width which is the separation distance between the peripheral side surface and the annular blade surface can be shortened and optimized without changing the tape width after cutting. Thereby, the reduction | decrease in waist folding of a to-be-cut sheet | seat material is suppressed, and generation | occurrence | production of cutting defects, such as a wave, a sagging, a wrinkle, can be reduced.

  In addition, even when the number of times of polishing processing of the slitter lower blade is increased, an appropriate groove width capable of maintaining quality can be set, so that the life of the slitter lower blade can be extended.

  Furthermore, since it is a simple configuration in which an attachment is interposed in the slit portion of the slitter lower blade, it is easy to assemble to the lower blade support shaft, and not only can the efficiency of maintenance work of the slitter lower blade be improved, By reducing the groove width, the contact between the annular blade surface and the finger is lowered, and the safety of work is improved.

It is a partial sectional view showing a slitter device provided with an attachment concerning an example of the present invention device. It is an assembly perspective view of a slitter lower blade provided with an attachment concerning an example of the present invention device. It is a partially expanded sectional view (A) and (B) which shows before and after grinding of the slitter lower blade concerning the example of the present invention device. It is operation | movement explanatory drawing (A) and (B) which show the difference of the presence or absence of the attachment of the slitter lower blade which concerns on the Example of this invention device. They are sectional drawing (A) and assembly sectional drawing (B) which show the modification of the attachment which concerns on the Example of this-application invention.

  The best mode of the slitter lower blade adjustment attachment (hereinafter referred to as “the present attachment”) according to the present invention will be described below in detail with reference to the drawings.

  Reference numeral 1 in FIG. 1 is a shear slit type slitter device 1. The general configuration of the slitter device 1 is such that a plurality of circular slitter upper blades 2 are coaxially mounted on the upper blade support shaft 21 with a predetermined set interval, and the same number corresponding to each of the slitter upper blades 2. The slitter lower blade 3 is coaxially mounted on the lower blade support shaft 31 arranged in parallel with the upper blade support shaft 21, and the blade edges 22 and 32 located on the peripheral side surfaces of the slitter are joined and slid. In this device, the sheet material to be cut S is continuously run on the sliding portion and cut into a long tape having a predetermined tape width. And the slitter lower blade 3 of this slitter apparatus 1 becomes a structure provided with this attachment 4. FIG.

  First, the slitter upper blade 2 will be described. The slitter upper blade 2 includes an annular base 23 that is mounted on the upper blade support shaft 21, and a circular thin round blade edge 22 that is radially expanded from one end of the annular base 23 is formed to protrude. And this blade edge | tip 22 is joined to the annular blade surface 32 used as the blade edge | tip of the slitter lower blade 3 mentioned later. In this joined state, each cutting edge 22 of the slitter upper blade 2 is configured to enter a groove portion 34 described later of the slitter lower blade 3 while forming a predetermined interval. Each slitter upper blade 2 abuts the annular base 23 of the adjacent slitter upper blade 2 against the peripheral side surface on which the cutting edge 22 is formed, and is coaxially mounted on the upper blade support shaft 21 in a state where this is repeated. ing.

  Next, the slitter lower blade 3 employs a so-called govel lower blade in this embodiment. The slitter lower blade 3 protrudes in an annular shape in the radial direction from the peripheral edge on one end side of the annular base 33 to be mounted on the lower blade support shaft 31, and an annular blade surface 32 is formed on the peripheral side surface. The annular blade surface 32 is formed from the peripheral side surface to the annular base portion side, with a predetermined width and a protruding amount in a direction along the lower blade support shaft 31. Each slitter lower blade 3 abuts the end surface of the annular base 33 of the adjacent slitter lower blade 3 against the peripheral side surface opposite to the annular blade surface 32, and repeats this to the lower blade support shaft 31. Coaxial ring. The separation distance between adjacent annular blade surfaces 32 is the tape width t after the cut sheet material S is cut.

  Further, the slitter lower blade 3 has an annular blade surface 32, an annular base portion 33, and a peripheral side surface opposite to the annular blade surface 32 of the adjacent slitter lower blade 3, depending on the shape and the arrangement state of the coaxial ring. A groove 34 that is one step lower than the peripheral edge is formed. A plurality of the groove portions 34 are formed at predetermined intervals along the axial direction of the lower blade support shaft 31, and the cutting edge 22 of the slitter upper blade 2 enters the groove portion 34, and the corresponding slitter lower blade 3 has an annular shape. The blade surface 32 is joined.

  Each slitter lower blade 3 having the above configuration has an outer peripheral surface having the same diameter as the slitter lower blade 3 and the outer peripheral surface and a predetermined width between the peripheral surface of the adjacent slitter lower blade 3 facing the annular blade surface 32. The annular main attachment 4 is arranged in a coaxial manner.

  This attachment 4 forms a ring body 41 as a base portion from a resin material, forms a boss portion 42 around a joint opening 42a opened at the center, expands the diameter from the boss portion 42, and slitter lower blade 3 And a flange portion 43 having the same outer diameter dimension. The height dimension of the joint opening 42a is set to be equal to or less than the length dimension of the annular base 33 of the slitter lower blade 3.

  The attachment 4 is arranged so as to be wrapped around the outside of the annular base portion 33 through the fitting port 42a of the boss portion 42. In addition, before attaching each slitter lower blade 3 to the lower blade support shaft 31, this attachment 4 is previously attached to the outer side of each annular base 33 as shown in FIG.

  The main attachment 4 having the above-described configuration is adjacent to the annular blade surface 32 of the slitter lower blade 3 without changing the ringing interval of the annular blade surfaces 32 according to the above-described ringing manner with respect to the slitter lower blade 3. The groove width d of the groove portion 34 with the slitter lower blade 3 is narrowed so as not to interfere with the cutting edge 22 of the slitter upper blade 2.

  Here, the polishing of the annular blade surface 32 of the slitter lower blade 3 and the change of the groove width d will be described. Usually, in the case of a gobber lower blade, in order to maintain the cutting quality without reducing the cutting condition, after removing all the slitter lower blades 3 from the lower blade support shaft 31 at every predetermined cumulative cutting distance of the sheet material S to be cut. Polishing processing of the annular blade surface 32 is performed. After polishing the annular blade surface 32, the lower blade support shaft 31 is mounted again, and the cutting edge 22 of the slitter upper blade 2 enters the groove 34 to adjust the joining and sliding state.

  The slitter device 1 prevents the cutting condition from being lowered by polishing the annular blade surface 32. On the other hand, since the same polishing process is performed on the annular blade surface 32 of each slitter lower blade 3, although the interval between the annular blade surfaces 32, in other words, the tape width t does not change, as shown in FIG. Since the protruding amount of the annular blade surface 32 is reduced, the groove width d is increased.

  When the groove width d is increased, another problem that the cutting quality is deteriorated due to the groove width d occurs. As the problem of the cutting quality, for example, as shown in FIG. 4, a waist folding phenomenon, waviness, sagging, wrinkles, etc. generated by the corner portion of the peripheral side surface opposite to the annular blade surface 32 of the adjacent slitter lower blade 3. Cutting failure is applicable.

  This attachment 4 fills the increase in the groove width d and suppresses the above-described deterioration in cutting quality. For this reason, it is necessary to set the thickness dimension of the flange part 43 of the ring body 41 to a thickness dimension that does not cause a decrease in cutting quality. In addition, since the periodic polishing of the annular blade surface 32 is usually performed a plurality of times, it is preferable that the attachment 4 includes at least two variations in which the thickness dimension of the flange portion 43 is different.

  Thus, if the variation of this attachment 4 is enriched, it will contribute also to the lifetime improvement of the slitter lower blade 3. FIG. In other words, the conventional slitter lower blade 3 is discarded with the number of polishing treatments in which the groove width d does not affect the cutting quality, and this time is the life of the slitter lower blade 3. However, since the groove width d can be reduced by coaxially mounting the appropriate attachment 4, it is possible to increase the number of polishing treatments and thereby extend the life thereof.

  In the attachment 4, as described above, the boss portion 42 and the flange portion 43 are integrally formed from a resin material. The reason for adopting the resin material as the material is that it is easy to perform the outer work of attaching the slitter lower blade 3 to the annular base portion 33 via the boss portion 42. Furthermore, by narrowing the groove width d, it is possible to suppress the operator's fingers from entering the groove portion 34 during assembly work, thereby preventing the occurrence of injury due to the annular blade surface 32 and improving safety.

  On the other hand, depending on the property of the sheet material S to be cut, it may be a requirement for quality assurance that both sides of the groove 34 of the slitter lower blade 3 are metal materials. In order to satisfy this requirement, as shown in FIG. 5, the boss portion 51 may be a resin material, while the flange portion 52 is formed of a metal material and then the integrated deformation attachment 5 may be prepared. Examples of the means for integrating the boss portion 51 and the flange portion 52 include bonding and interference fitting.

DESCRIPTION OF SYMBOLS 1 Slitter apparatus 2 Slitter upper blade 21 Upper blade support shaft 22 Cutting edge 23 Annular base 3 Slitter lower blade 31 Lower blade support shaft 32 Annular blade surface 33 Annular base 34 Groove 4 This attachment 41 Ring body 42 Boss part 42a Joint port 43 Flange part 5 Deformation attachment 51 Boss part 52 Flange part S Sheet material to be cut d Groove width t Tape width

Claims (4)

A plurality of upper blade support shafts that rotate about a shaft and a circular slitter upper blade that is coaxially mounted at a predetermined interval, and a lower blade support shaft that is arranged in parallel to the upper blade support shaft, and each slitter upper blade Corresponding slitter lower blades made of a plurality of coaxial rings, and shear slit type slitters that cut a sheet material to be cut continuously by sliding the peripheral side surfaces of each other into a long tape of a predetermined width. An attachment for adjusting the slitter lower blade used in the apparatus,
Between the peripheral side surface of the slitter lower blade and the peripheral side surface of the adjacent slitter lower blade facing the annular blade surface projecting in an annular shape in the direction along the support shaft from the peripheral side surface of the slitter lower blade, An attachment for adjusting a slitter lower blade, wherein a circular ring body having the same diameter as the slitter lower blade and an outer peripheral surface set to a predetermined width is coaxially mounted without changing the interval. A predetermined width of the outer peripheral surface of the ring body,
2. The slitter lower blade adjustment attachment according to claim 1, wherein a plurality of types of widths are set in accordance with a reduction amount of the protruding amount of the annular blade surface of the slitter lower blade. The ring body,
A boss part fitted on the annular base part to be mounted on the lower blade support shaft of the slitter lower blade without exceeding the axial length of the annular base part;
An annular flange portion having a predetermined thickness extending in a radial direction from the boss portion and having the same diameter as the slitter lower blade and a smooth outer peripheral surface;
The attachment for adjusting the slitter lower blade according to claim 1 or 2, characterized by comprising: The ring body is
The slitter lower blade adjustment attachment according to claim 1, wherein at least the outer peripheral surface is a metal surface.

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