JPH0653541B2 - Double-fold winding slitter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention cuts a raw sheet into a narrow width and, at the same time, cuts a plurality of sheets into narrow widths (hereinafter, sometimes simply referred to as a cut sheet). The present invention relates to a double-fold winding slitter capable of being folded in half and wound up.

[Conventional technology]

In order to make a medicine bag or the like, it is necessary to fold a sheet narrowly cut by a slitter and wind it up. In such a case, first, the original sheet is cut into a narrow width with a general slitter and once wound on the winding shaft, and then the sheet with the narrow width is folded into two by a special folding machine. It was

[Problems to be solved by the invention]

Therefore, a general slitter and a special folding machine are required, and there is a problem that work efficiency is poor.

Further, in order to fold a sheet in half, generally, a triangle-shaped half-fold is formed between a guide roller group for guiding the traveling of the sheet and a pair of nip rollers provided with the guide roller group orthogonal to the axis. A plate is provided, and when the sheet travels through the half-folded plate portion, both end portions of the sheet are brought close to each other in the central portion to be folded in half.

With such a configuration, the sheet surfaces of the sheet before and after being folded in two are orthogonal to each other. For this reason, the axes of the roller groups before and after the portion of the half-folded plate are orthogonal to each other, and when a large number of cut sheets are folded in half at the same time and wound up, the roller group that constitutes the machine The arrangement of is very complicated and cannot be designed compactly.

In view of such problems and technical circumstances, the present invention can cut a raw sheet into a narrow width, and at the same time, fold a plurality of sheets cut into a narrow width into two and wind them at high speed. The purpose of the present invention is to provide a two-fold winding slitter in which the original roll and the winding shaft are parallel to each other.

[Means for solving problems]

The two-fold winding slitter according to the present invention cuts a raw sheet unwound from a raw roll into a large number of pieces by a cutting device, and cuts each sheet by a large number of turn bars in which compressed air is ejected from a small hole. 90 running directions
After the conversion, the cut sheet is folded in half by the bi-fold plate arranged vertically so that the sheet surfaces of the original sheet and the cut sheet folded in two face the same direction. It is characterized by being configured.

〔Example〕

1 to 11 show a double-fold winding slitter according to an embodiment of the present invention. First, the outline of the slitter will be described with reference to FIG. 1, and then the portion of the cutting sheet bi-folding device according to the present invention will be described.

The original sheet S wound around the original sheet roll 2 is pulled out by using one of the rollers forming the nip roller 4 of the original sheet S as a driving roller.

A large number of guide rollers 6, 8, 10, 12, 14 are provided between the original roll 2 and the pair of nip rollers 4.

A blade shaft 16 on which the upper blade is mounted, cut sheet S ₁ is cut into strip numerous original sheet S by the cutting apparatus A consisting of the lower blade shaft 18 which is lower blade attached
Becomes In this embodiment, the original sheet S is cut into seven strips, and the ears at both ends of the original sheet S are cut and removed by the cutting device A, so that they are shown in FIGS. 2 and 3. Thus, the width W of the original sheet S is slightly larger than seven times the width W ₁ of the cut sheet S ₁ .

The traveling direction of each of the cut sheets S ₁ cut by the cutting device A is changed by the turn bar B by 90 °, and
A plurality of cutting sheets S ₁ adjacent to each other between the cutting device A and the turn bar B are separated by the turn bar B. The cut sheet S ₁ separated by the turn bar B is folded in two by the folding device C, and the guide roller 2
It is taken up by a take-up roll 26 which is in contact with the surface roller 24 through 0, 22.

As shown in FIGS. 4 to 6, the cutting sheet S ₁
The turn bar B for changing the traveling direction of the blade 90 ° by 90 ° is inclined at approximately 45 ° with respect to the axial center of the upper blade shaft 16 and the lower blade shaft 18 constituting the cutting device A, and both ends thereof are fixed.
It is fixed at 8.

7 turn bars B corresponding to the number of cut sheets of the original sheet S
Are arranged side by side at a distance equal to the width W ₁ of the cut sheet S ₁ along a direction perpendicular to the traveling direction of the cut sheet S ₁ immediately before the turn bar B. The turn bar B is formed of a cylindrical body and is fixed to the fixing member 28 so that it cannot rotate. A large number of small holes 30 are formed in a portion of the turn bar B around which the cut sheet S ₁ is wound, and compressed air is introduced into the turn bar B from a hose 32 connected to one end of the turn bar B to allow the small holes 30 to pass through. It is supposed to gush out.

When the cut sheet S ₁ is pulled by the nip roller 34 which constitutes the bi-folding device C, the traveling direction of the cut sheet S ₁ is changed by 90 ° at the turn bar B as shown in FIG. Since the compressed air is ejected from the small hole 30 of the turn bar B, the cutting sheet S ₁ has a traveling direction of 90 in a state in which the cut sheet S ₁ is not in contact with the turn bar B or close to it.
° converted. As a result, it is possible to prevent the cut sheet S ₁ from coming into strong contact with the turn bar B and being damaged when the traveling direction is changed, and high-speed winding is possible.

The cut sheet S ₁ whose traveling direction is changed by 90 ° by the turn bar B flows into the half-folding device C through the guide rollers 36, 38 and 40. Each guide roller 36, 38, 40
Is the upper blade shaft 16 and the lower blade shaft 1 that constitute the cutting device A.
It is provided horizontally orthogonal to 8.

As shown in FIGS. 7 to 11, the folding device C
Is composed of a triangular folding plate 42 and a nip roller 34, and the number of folding devices C corresponding to the number of cutting threads of the original sheet S constitutes the cutting device A. The shafts 18 are arranged side by side in the axial direction. Since the nip roller 34 is parallel to the upper blade shaft 16 and the lower blade shaft 18 constituting the cutting device A, the guide rollers 36, 38, 4 provided between the turn bar B and the half-fold plate 42 are arranged.
It is orthogonal to 0. A pair of nip rollers 34 are provided almost directly below the guide roller 40.
A half-folded plate 42 is provided vertically between the guide roller 40 and the guide roller 40. A wide portion of the half-folded plate 42 is located on the side of the guide roller 40, and a sharp portion thereof is in a state of entering the ends of the pair of nip rollers 34. Therefore, the half-folded plate 42 is provided between the guide roller 40 and the pair of nip rollers 34 in a slightly inclined posture.

The cut sheet S ₁ pulled out from the guide roller 40 by the nip roller 34 is slid on the upper surface of the half-folded plate 42, and its both ends are brought to the center, and the nip roller 34 gives a crease and is folded in two. The cut sheet S ₁ folded in two passes through the guide rollers 20 and 22 and is wound up by the winding roll 26. Adjustment of the half-fold position of the cut sheet S ₁ is performed by attaching the half-fold plate 42,
Adjust by adjusting the tilt angle.

In this way, the original sheet S is cut by the cutting device A into a large number of cut sheets S ₁ , and the traveling directions of the respective cut sheets S ₁ are changed by 90 ° by the turn bars B, and the cut sheets S ₁ flow into the half-folding device C, respectively. The cut sheet S ₁ is folded in half by the bi-folding device C, and a nip roller 34 imparts a crease, and each cut sheet S ₁ folded in half is wound up by a winding roll 26.

〔The invention's effect〕

The two-fold winding slitter according to the present invention cuts a raw sheet unwound from a raw roll into a large number of pieces by a cutting device, and cuts each sheet by a large number of turn bars in which compressed air is ejected from a small hole. 90 running directions
After the conversion, the cut sheet is folded in half by the bi-fold plate arranged vertically so that the sheet surfaces of the original sheet and the cut sheet folded in two face the same direction. Since it is configured, a single slitter can cut the raw sheet into multiple strips, fold the cut sheet in two, and wind it on a take-up roll. The cut sheet is not damaged when the traveling direction of 90 ° is changed by 90 °, and the traveling speed of the sheet can be increased to enable high-speed winding.

[Brief description of drawings]

FIG. 1 is a schematic side view of a slitter for double folding and winding according to the present invention, FIGS. 2 and 3 are views showing a raw sheet S and a cut sheet S ₁ , respectively, and FIG. 4 is a turn bar B. FIG. 5 is a plan view for explaining a state in which the traveling direction of the cut sheet S ₁ is changed by 90 °, FIG. 5 is an enlarged cross-sectional view of the turn bar B, and FIG. 6 is a plurality of turn bars B arranged side by side. FIG. 7 is a plan view of the folded portion, FIG. 7 is a front view of the portion where the folding device C is arranged in parallel, FIG. 8 is a diagram showing a state in which the cut sheet S ₁ is folded in half, and FIG. 8 is a perspective view taken along arrow X, FIG. 10 is a perspective view showing a state in which the cut sheet S ₁ is folded in two, and FIG. 11 is a perspective view taken along arrow Y of FIG. The explanation of the symbols of the main parts is as follows. A: Cutting device, B: Turn bar C: Half-folding device, S: Original sheet S ₁ : Cut sheet, 30: Small hole 34: Nip rollers 36, 38, 40: Guides provided between the turn bar and the half-folding device Roller 42: Folded plate

Claims (1)

[Claims] 1. A raw fabric roll for unwinding a raw fabric sheet and a take-up roll for winding a cut sheet obtained by cutting the raw fabric sheet into a plurality of strips by a cutting device by further folding the cut sheet in two and parallel to each other. It is a slitter for two-fold winding having the configuration as described above, wherein the cylindrical body is provided with a large number of small holes, and the traveling direction of each of the multiple cut sheets obtained by cutting the raw sheet by the cutting device is 90 °. A large number of turn bars for conversion are connected to the cutting device and are installed side by side at a predetermined interval along a direction orthogonal to the running direction of the original sheet, and each running direction is converted by 90 °. A guide roller group for guiding the traveling of the cut sheet is arranged with its central axis orthogonal to the original roll and the winding roll, and the central axis of the guide roller group is orthogonal to these. A triangular bi-fold plate for folding the cut sheet in two is vertically disposed between a pair of nip rollers arranged as described above, and compressed air is ejected from a large number of small holes provided in the turn bar. Thus, the two-fold winding slitter is characterized in that the traveling direction is changed in the turn bar portion without contacting or near the cutting sheet.