JPS63127973A - Overlapping device for sheet - Google Patents

Abstract

PURPOSE:To overlap sheets easily and reliably and to protect the sheet from damage, by touching sheets being fed out with high speed softly by means of a stop belt, a catch belt and a low speed conveyor. CONSTITUTION:A sheet 11 being projected from a high speed conveyor 22 through a projecting device 12 passes through a guider plate 13 then held by a stop belt 14, a catch belt 52 and a low speed conveyor 16 and overlapped. Said catch belt 52 is entrained over a drive roll 33, an eccentric roll 53 for regulating the lead-in angle (alpha) with respect to the low speed conveyor, a guide roll 17, etc., and since the sheet 11 is brought in contact with the inclined face of the catch belt 52, impact is dispersed. In order to protect the sheet from damage and pressure due to the guide roll 17, a referential roll 54 is set to be slightly higher than the horizontal level. Consequently, the sheet can be overlapped reliably without causing impact damage at the tip of the sheet.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sheet overlapping device using a catch belt that catches sheets of paper, plastics, foil, etc., which become corrugated or protrude during conveyance. It is.

[Conventional technology]

Conventionally, this type of overlapping device has been implemented in which a cut sheet is corrugated and protruded and caught by a catch roller on a low-speed conveyor.

[Problem that the invention seeks to solve]

However, with this type of structure, there is a limit to how much the sheet can be corrugated and protruded to be caught by a catch roller. The reason for this is that when the sheet moves from a high-speed conveyor to a low-speed conveyor, the leading edge of the sheet hits the catch rollers directly and strongly, resulting in a strong concentrated impact force that causes the leading edge to be easily scratched and bent. or
It is also conceivable that the sheet pushes up the catch roller, causing pressure scratches from the catch roller and causing damage to the sheet.

[Means to solve the problem]

The technical means of the present invention to solve the above problem is that the leading edge of the sheet catches @2, the catch belt and the presser belt gradually speed up the sheet to adapt it to the low speed conveyor belt, and the soft catch prevents overlap. It is configured to allow

[For production]

The effect of this technical means is as follows.

That is, when a sheet is caught by the catch roller, the caught sheet receives a strong impact and may be damaged.

Therefore, in order to reduce the impact on the tip of the sheet, the overlapping of the sheet is easily and surely ensured so that the sheet that is ejected at high speed can be soft-caught by sequentially using a presser belt, a catch belt, and a low-speed conveyor belt.
Damage to the sheet may be eliminated.

〔Example〕

The following will be explained based on the drawings.

FIG. 1 is a side view of a conventional catch roller overlapping device.

In addition, around this device, a sheet 1 (not shown in the figure) is cut to a certain size with a cutter, and the corrugation is protruded by a corrugation device 2, passes through a guide plate 3, and is placed between a low-speed conveyor belt 4 and a presser belt 5. This was carried out as an intermediate process to improve the stacking of the sheets 1 by overlapping and conveying them with the catch rollers 6.

At this catch roller 6, the sheet 1 is projected with corrugations and is flown to a fixed position, but can be moved left, right, front and back depending on the width and length of the sheet 1. In addition, the position of the catch roller is determined by the cutting of the web, so the lower roller 7 is used as a reference, and when the sheet 1 is short, it is moved to the guide plate side, and when it is long, it is moved to the direction of deposition (not shown in the figure). Adjustments can be made.

Now, the sheet 1 is projected from the high-speed conveyor belt 8 by the corrugation 2, transferred to the low-speed conveyor belt 4 and the presser belt 5, and is held or caught, and the next sheet 1 is placed thereon and lapped. However, in the above-mentioned overlap device 10, since the sheet 1 directly hits the catch roller 6 that catches the sheet 1, it is unavoidable that the leading edge of the sheet 1 catches the sheet 1 with an impact, resulting in scratches. It can also be a cause.

The side view of FIG. 2 was invented to improve the conventional device described above. Accordingly, in the present invention, the sheet 11 is conveyed by a high-speed conveyor belt n, a portion of which is shown at the left end of the figure, and is ejected by an ejector 12. protruding sheet 11
passes through the guide plate 13 and is sandwiched between the presser belt 14, the catch belt 52, which will be explained in detail later, and the low-speed conveyor belt 16, and overlaps. The above-mentioned catch belt 52 includes a drive roller that moves it, an adjustment eccentric roller 53 that adjusts the introduction angle α with the low-speed conveyor belt 16, a guide roller 17 and a belt 52 that are at a position where the sheet 11 is finally clamped. Tightener 18 for adjusting the tension of
are passed around in combination. Also guide roller 17
A roller 19 is provided at the end of the shaft to adjust the interval between the low-speed conveyor belt 16 and the presser belt 14.

Also, when comparing catch rollers and catch belts, the former has
When conveyance is maintained with the presser belt and the low-speed conveyor belt substantially parallel and the catch roller is sunk, the top of the catch roller hits the low-speed conveyor belt. However, when the sheet is conveyed at a reduced speed, the sheet hits one point of the catch roller intensively, and the impact at the tip is strong.

On the other hand, since the latter is carried out via a catch belt, the sheet hits the inclined surface of the belt with less resistance, the impact is dispersed, and the sheet can be caught softly.

Further, since the above-mentioned overall configuration consists of moving, driving, lifting and eccentric devices, they will be explained below.

First, in the moving device (2), the entire area between the catch belt devices can be easily moved from side to side even while the sheet 11 is being conveyed, using racks and binion gears, depending on the cutting length of the sheet 11. ing.

The driving device 31 is maintained at the same speed as the low-speed conveyor belt 16 by a drive control (not shown) via a driving roller.

Since the device 41 for lifting and lowering is provided between the catch belt devices in the width direction of one or several sets with respect to the paper of the sheet, it is possible to move each device up and down between the catch belt devices using a cylinder. Moreover, even if there is a problem during operation, the catch belt device can be raised by a switching valve (not shown).

The eccentric device 61 is the most important device that provides the lap reference interval H. In order to obtain this interval H, it is first necessary to adjust the introduction angle α at which the seat 11 enters, and for this purpose, the introduction angle α of the seat 11 is adjusted by using eccentric rollers and
Use to eccentric. The introduction angle α is determined by the eccentric roller 53, the catch belt 52 hooked around the guide roller 17, and the lower low-speed conveyor belt 16. Next is the arrangement in relation to the reference rollers interposed within the low-speed conveyor belt 16. This is determined by taking the cutting length from the end of the guide plate 13 and determining the reference position M.
This can be done as an adjustment of the reference roller distance with the peak at . The distance that is perpendicular to this reference position M and the above-mentioned inclined catch belt, that is, the reference distance H that allows for the most appropriate wrap.
can be easily adjusted. Further details are shown in FIGS. 5 to 7.

Therefore, the above arrangement acts as a moving, driving, lifting and eccentric device to improve sheet overlap. Regarding the lower low speed conveyor belt 16,
The seat 11 is loaded and overlapped, and the detailed operation will be explained with reference to FIG.

This low speed conveyor belt 16 is similar to the high speed conveyor belt 2.
This is an intermediate conveying device that facilitates wrapping of the sheet 11 when speeding down the sheet 11 conveyed from the guide plate 2 and the guide plate 13.

The flow of the low-speed conveyor belt 16 is generally horizontal, but when the sheet 11 is projected from the corrugation, the introduction angle α of the upper and lower belts 52, 16 changes depending on the sheet thickness, lamination, and waist. Depending on the strength of the conveyor belt 16, it may be necessary to change the clearance to some extent.
is pushed upward to determine the gap H, and finely adjust the introduction angle α between the presser belt 14 and the eccentric roller 53. This allows the flow of the sheet to conform to the upper belt, resulting in smooth conveyance and overlapping.

Next, referring to FIG. 4, the reference roller distance and the catch belt 520 interval H will be explained in detail.

The amount of adjustment of the gap H changes depending on the basis weight of one or more laminated sheets and the amount of wrapping of the sheets. Therefore, depending on the basis weight and the amount of wrap, this interval 'H can be adjusted freely by observing the flow of the sheet even during operation.

It is also possible to move the entire catch belt device to a predetermined position depending on the cutting length of the sheet, but this is especially true when wide cuts are made in the paper and double cutting (when there are sheets cut next to each other) is possible. ), it can also be used effectively.

Figures 5 to 7 show the catch belt 52 and the reference roller 5.
4. Detailed relationship between the reference interval H and the guide rollers 17 is shown. As described above, this reference interval H can be determined by taking the cutting length from the end of the guide plate 13 and adjusting the reference roller distance with the reference position M as the apex. As for the role of vertical adjustment of the reference rollers 54, if the low-speed conveyor belt 16 is horizontal and the catch belt 52 is introduced at the angle α, and depending on the reference interval H, the guide rollers 17 bite into the low-speed conveyor belt 16. In the state A, the wrapped sheet 11 is subjected to creases B and pressure, so the reference rollers 54 are set slightly higher than horizontal, and the guide rollers 17 are set regardless of the reference interval H.
By preventing any biting on the low-speed conveyor belt 16, sheet folding and pressure after lapping can be prevented.

〔Effect of the invention〕

The present invention ensures the overlapping of the sheets, and uses a catch belt to catch the sheets when the moving sheets come from the high-speed conveyor belt to the low-speed conveyor belt. It adapts to the belt's creep and flows smoothly, without impact damage to the tip of the sheet, and has the effect of creating a soft catch and ensuring a secure wrap.

[Brief explanation of the drawing]

Fig. 1 is a side view of a conventional catch roller overlap device, Fig. 2 is a side view of a catch belt overlap device of the present invention, Fig. 3 is an explanatory diagram of the low speed conveyor belt of the present invention, and Fig. 4 is a side view of the catch belt overlap device of the present invention. FIGS. 5 to 7 are explanatory diagrams showing the overlapping state of sheets due to the catch belt of the invention, and are diagrams of the relationship between the reference rollers and the low-speed conveyor belt. 11... Sheet, 16... Low speed conveyor belt, 1
7...Guide roller, O..., driving roller, connection...
Catch belt device, 52...Catch belt, 53
...Eccentric roller, leg...Reference roller, 61...Eccentric device, α...Introduction angle, H...Reference interval, L...Cutting length, M...Reference position. Patent Applicant Minamisenju Manufacturing Co., Ltd. Representative Hisao Takaoka Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] In overlapping the sheets on the low-speed conveyor belt, a catch belt via a driving roller, an eccentric roller, and a guide roller, and changing the introduction angle of the low-speed conveyor belt and the catch belt by adjusting the eccentric rollers; A sheet overlapping device characterized in that an eccentric device that moves the entire unit up and down can adjust a reference interval at a reference position in relation to the cutting length using reference rollers inside the low-speed conveyor belt.