JPS63242865A - Two-fold winding slitter - Google Patents

Abstract

PURPOSE:To increase the work speed without damaging cut sheets by providing many small holes for blowing compressed air on a turn bar changing the travel direction of the cut sheets by 90 deg. and feeding the cut sheets to a two-fold device in a noncontact state. CONSTITUTION:A raw sheet is cut into many cut sheets S1 by a cutter, the travel direction of the cut sheets S1 is changed by 90 deg. by a turn bar B, the cut sheets S1 are fed to a two-fold device C by a pair of nip rollers 34 and slid on a triangular two-fold plate 42, both end sections are brought near the center, the folding trait is applied by a pair of nip rollers 34, and the cut sheets are folded into two and wound. Many small holes 30 are arranged on the periphery of the turn bar B in contact with the cut sheets S1 to spray compressed air, and the travel change by 90 deg. of the cut sheets S1 is guided in a noncontact state or nearly in a noncontact state. Accordingly, the winding work of the cut sheets in the two-fold can be performed at a high speed without damaging the cut sheets.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention involves cutting a raw sheet into thin strips, and at the same time cutting several strips of thin strips (hereinafter also simply referred to as cut sheets). This invention relates to a two-fold winding slitter that is capable of folding a sheet into two and winding it up.

[Conventional technology]

In order to make medicine bags and the like, it is necessary to cut the sheet into thin strips using a slitter, fold it in half, and then roll it up. In such cases, the raw sheet is first cut into narrow strips using a general slitter and wound onto a winding shaft, and then the cut sheet is folded into two strips using a specialized bi-folding machine and then wound. Ta.

[Problem that the invention seeks to solve]

For this reason, a general slitter and a dedicated folding machine are required, and there is a problem in that work efficiency is low.

Generally, to fold a sheet in half, a triangular fold is formed between a group of guide rollers to guide the running of the sheet, and a pair of nip rollers installed perpendicular to the axis of this group of guide rollers. A plate is provided, and when the sheet travels through the bifold plate, both ends of the sheet are brought together toward the center, thereby folding the sheet into two.

Because of this configuration, the sheet surfaces of the front and rear sheets that are folded in half are orthogonal to each other. For this reason, the axes of the roller groups before and after the bifold plate are perpendicular to each other, and when a large number of cut sheets are simultaneously folded in half and wound, the roller groups that make up the machine The arrangement is very complicated and cannot be designed compactly.

In view of these problems and technical circumstances, the present invention is capable of cutting an original sheet into thin strips, folding several sheets cut into thin strips in half, and winding them up at high speed. The purpose of this invention is to provide a two-fold winding slitter in which the original fabric roll and the winding axis are parallel to each other.

[Means for solving problems]

The present invention connects the raw sheet to a sheet cutting device for cutting the raw sheet into thin strips, so that the running direction of the cut sheet can be adjusted at 90 degrees.
A large number of cylindrical turn bars are arranged in parallel at predetermined intervals along a direction perpendicular to the running direction of the raw sheet, and each cut sheet has its running direction converted by 90 degrees by each turn bar. A triangular bi-folding plate for folding the cut sheet in half is arranged between a group of guide rollers for guiding the movement of the sheet and a pair of nip rollers installed perpendicular to the axis of the group of guide rollers. The present invention is characterized in that the running direction of the cut sheet is changed in a non-contact or almost non-contact state by blowing out compressed air from a small hole provided in the turn bar.

〔Example〕

1 to 11 show a two-fold winding slitter according to an embodiment of the present invention. First, the outline of this slitter will be explained with reference to FIG. 1, and then the section of the cut sheet folding device in two according to the present invention will be explained.

The original fabric sheet S wound around the original fabric roll 2 is pulled out with one roller constituting the nip roller 4 for the original fabric sheet S serving as a driving roller.

A large number of guide rollers 6.8.10.12.14 are provided between the original fabric roll 2 and the pair of nip rollers 4.

The original fabric sheet S is cut into a large number of strips by a cutting device A consisting of a combination of an upper blade shaft 16 to which an upper blade is attached and a lower blade shaft 18 to which a lower blade is attached.
In this example, the original fabric sheet S is cut into seven strips, and the edges at both ends of the original fabric sheet S are cut and removed by the cutting device A. As shown in , the width W of the original fabric sheet S is slightly larger than seven times the width W of the cut sheet S1.

The running direction of each cut sheet St cut by the cutting device A is changed by 90@ by the turn bar B, and
Between the cutting device A and the turn bar B, several adjacent cut sheets S1 are separated by the turn bar B, respectively. The cut sheet Sl separated by the turn bar B is folded into two by the bifolding devices T, C, passed through guide rollers 20, 22, and wound onto a winding roll 26 in contact with the surface roller 24.

As shown in Figures 4 to 6, cut sheet S
The turn bar B for converting the + running direction by 90'' is connected to the upper blade shaft 16 and the lower blade shaft 18 that constitute the cutting device A.
It is inclined approximately 45 degrees with respect to the axis of the shaft, and its both ends are fixed to the fixing member 28.

7 turn bars B corresponding to the number of cutting strips of the original fabric sheet S
are arranged in parallel at intervals equal to the width W1 of the cutting sheet Sl in a direction perpendicular to the running direction of the cutting sheet S+ immediately before the turn bar B.

This turn bar B is composed of a cylindrical body, and is fixed to a fixed member 28 so that it cannot rotate. A large number of small holes 30 are bored in the part of the turn bar B around which the cut sheet SL is wound, and a hose 32 is connected to one end of the turn bar B.
Compressed air is made to flow into the turner B from the turner B and is ejected from a large number of small holes 30.

When the cut sheet S is pulled by the nip roller 34 constituting the bifolding device C, the running direction of the cut sheet SI is changed by 90° at the turn bar B, as shown in FIG. Since compressed air is blown out from the small hole 30 of the turn bar B, the cutting sheet St is not in contact with the turn bar B, or is almost in a non-contact state, and the running direction is 90 degrees.
° Converted. This prevents the cut sheet Sl from coming into strong contact with the turn bar B and being damaged when the running direction is changed, and high-speed winding becomes possible.

The cut sheet S, whose running direction has been changed by 90'' by the turn bar B, flows into the bifolding device c through the guide rollers 36, 38, 40. Each guide roller 36, 38, 40
are the upper blade shaft 16 and the lower blade shaft 1 that constitute the cutting device A.
8 and horizontally.

As shown in FIGS. 7 to 11, the bifolding device C
is composed of a triangular bi-folding plate 42 and a nip roller 34, and bi-folding devices C whose number corresponds to the number of cutting strips of the raw sheet S constitute the cutting device A. The upper blade shaft 16 and the lower blade constitute the cutting device A. They are arranged in parallel in the axial direction of the shaft 18. Since this nip roller 34 is parallel to the upper blade axis 16 and lower blade axis 18 that constitute the cutting device A, each guide roller 36, 38, . 4
It is orthogonal to 0. A pair of nip rollers 34 are provided almost directly below the guide roller 40, and this nip roller 3
A bifold plate 42 is provided between the guide roller 40 and the guide roller 40 . The plate surface of the bifold plate 42 is parallel to the axis of the guide roller 40. The wide portion of the bifold plate 42 is located on the side of the guide roller 40, and the sharp portion thereof is inserted into the ends of the pair of nip rollers 34. Therefore, the bifold plate 42 is provided between the guide roller 40 and the pair of nip rollers 34 in a slightly inclined position.

The cut sheet S pulled out from the guide roller 40 by the nip roller 34 slides on the upper surface of the bifold Fi 42, with both ends brought to the center, and the cut sheet S is pulled out from the guide roller 40 by the nip roller 34.
It is folded in half with a folding habit. The cut sheet S1, which has been folded in half, passes through guide rollers 20.22 and is wound onto a winding roll 26. Adjustment of the bifold position of the cut sheet SI is performed by adjusting the attachment position, inclination angle, etc. of the bifold plate 42.

In this way, the original fabric sheet S is cut into a large number of cut sheets S by the cutting device A, and the running direction of each cut sheet SI is changed by 90'' by the turn bar B, and each flows into the bifold device C, where it is cut. The sheet S1 is folded in two by this bifolding device C, and is also given a crease by the nip roller 34, and each of the cut sheets S1 folded in two is wound up on its own winding roll 26.

(Effects of the Invention) The present invention connects the raw sheet to a sheet cutting device for cutting the raw sheet into thin strips, and cuts the cut sheet into 90 degrees in the running direction.
A large number of cylindrical turn bars are arranged in parallel at predetermined intervals along a direction perpendicular to the running direction of the raw sheet, and each cut sheet has its running direction converted by 90 degrees by each turn bar. A triangular bi-folding plate for folding the cut sheet in half is arranged between a group of guide rollers for guiding the movement of the sheet and a pair of nip rollers installed perpendicular to the axis of the group of guide rollers. However, by blowing out compressed air from a small hole provided in the turn bar, the running direction of the cut sheet is changed in a non-contact or nearly non-contact state, so that the cut sheet cut into multiple strips by the cutting device is The direction of travel is 9 depending on the turn bar.
The cut sheets are converted to 0° and flow into a bifolding device, where the cut sheets are folded in half, a nip roller gives them a folding pattern, and each of the bifolded cut sheets is wound on its own winding roll. taken.

Therefore, the work of cutting the raw sheet into thin strips and the work of folding the cut sheets cut into thin strips into two can be performed with a single slipper, and the work of folding a large number of cut sheets into two can be performed. Since the cut sheet can be folded and rolled up at the same time, the efficiency of folding the cut sheet in half and winding it up is greatly improved. In addition, compressed air is ejected from a small hole provided in the turn bar to change the running direction of the cut sheet in a non-contact or nearly non-contact state, so there is no chance that the cut sheet will be damaged when the running direction is changed by the turn bar. At the same time, it becomes possible to increase the traveling speed of the sheet and perform high-speed winding.

Furthermore, since the turn bar and all other rollers except for the guide roller group provided between the turn bar and the folding device can be arranged parallel to each other, the entire slitter can be designed compactly.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of a two-fold winding slitter according to the present invention, FIGS. 2 and 3 are views showing the raw sheet S and the cutting sheet St, respectively, and FIG. 4 is a turn bar B. Cut sheet by S. 5 is an enlarged cross-sectional view of the turn bar B, and FIG. 6 is a plan view of a portion where a large number of turn bars B are arranged in parallel. ,
FIG. 7 is a front view of the part where the bi-folding devices C are arranged side by side;
FIG. 8 is a diagram showing a state in which the cut sheet S1 is folded in half, FIG. 9 is a view in the direction of the X arrow in FIG. 8, and FIG. 10 is a diagram showing a state in which the cut sheet S1 is folded in two. Perspective view, 1st
FIG. 1 is a perspective view taken along the Y arrow in FIG. 10. The explanation of the symbols of the main parts is as follows. A: Cutting device B: Turner C: Bi-folding device S: Raw sheet SI: Cutting sheet 30: Small hole 34: Nip roller 36, 38, 40: Guide roller 42 provided between the turn bar and the bi-folding device: Ni Folded plate patent applicant Nobuyo Higashi Co., Ltd. Patent attorney Tetsuhiro Uchiya ＼、(１・゛Figure 2Figure 3Figure 4Figure 5Figure 8Figure 9Figure 10Figure 11

Claims (1)

[Claims] A large number of cylindrical turn bars are connected to a sheet cutting device for cutting the raw sheet into thin strips, and are used to change the running direction of the cut sheet by 90° in a direction perpendicular to the running direction of the raw sheet. A group of guide rollers are arranged in parallel at a predetermined interval along the line and guide the running of each cut sheet whose running direction has been changed by 90 degrees by each turn bar. A triangular bi-folding plate for folding the cut sheet in half is provided between the provided pair of nip rollers, and compressed air is blown out from a small hole provided in the turn bar to fold the cut sheet in a contactless or non-contact manner. A bi-fold winding slitter that is characterized by changing the running direction in a state close to contact.