JPH11199112A - Stacker device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the jam or accumulation failure of papers on a stacker belt, in a device for discharging documents in a partially overlapped condition onto a stacker belt from a discharge roller, to accumulate the documents on the rear end of the stacker belt. SOLUTION: A drive unit 15 equipped with a speed-variable function is connected to a slacker belt 4, the ratio of the carrying speed of the stacker belt 4 to the document discharge speed of a discharge roller 2 is made variable, and can be set to an adequate ratio in accordance with the characteristics of the discharge speed from the discharge roller 2, and the lengths, weight, and for curl, etc., of the dicuments to be treated, to accumulate the documents.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stacker device for stacking slips discharged one after another.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, a form 1 of a fixed length is successively discharged from a discharge roller 2 almost horizontally, and is guided obliquely downward by a form guide 3 while preventing the form from jumping up. The form 1 is placed on a stacker table 6 provided with a horizontally arranged stacker belt 4 and a support plate 5 for supporting the lower surface of the stacker belt 4, and is pressed against the stacker belt 4 by a holding roller 7 to give a conveying force. , Its report 1
Is transported to the end of the stacker table 6, and is raised along an accumulation guide 8 arranged at that position, and a stacker device 9 configured to accumulate is used.

[0003] In this type of stacker device 9, in order to satisfactorily accumulate the form 1 at the rear end of the stacker table 6, the discharge rollers 2
It is necessary to overlap the leading end of the next form on the trailing end of the form discharged on the stacker belt 4 from
For this reason, the conveying speed of the stacker belt 4 is set to be lower than the discharging speed of the discharging roller 2. And FIG.
As shown in (a) and (b), the form 1a discharged from the discharge roller 2 falls on the stacker belt 4, is pressed against the stacker belt 4 by the holding roller 7, and is conveyed at a low speed by the stacker belt 4. During this time, the discharge roller 2 sends out the next form 1b at a high speed, whereby the leading end of the following form 1b overtakes the trailing end of the form 1a on the stacker belt 4 and falls thereon. Here, the discharge roller 2 and the stacker belt 4 are configured to be mechanically synchronously driven. Regardless of the processing speed, the ratio between the discharge speed of the discharge roller 2 and the transport speed of the stacker belt 4 is equal. Therefore, the ratio of the overlap length of the forms on the stacker belt 4 to the total length of the forms was constant.

[0004]

However, in such a conventional apparatus, the properties (size, basis weight, presence / absence of curl, etc.) of a form are obtained despite good stacking for a certain form. Etc.), there is a problem that stable stacking cannot be performed, and in particular, a jam easily occurs at a portion where a form discharged from a discharge roller is received on a stacker belt. In particular, this problem is remarkable when the processing speed is increased.

An object of the present invention is to provide a stacker device capable of stably stacking various types of forms and high-speed processing. With the goal

The present inventors have studied the causes of the above-mentioned conventional problems and found that these problems have occurred for the following reasons. That is, in order to properly stack the form 1 at the rear end of the stacker belt 4, the leading end of the next form is overlapped on the rear end of the form discharged from the discharge roller to the stacker belt as described in FIG. It is necessary to adjust the conveying speed of the stacker belt,
The speed is set at a constant rate smaller than the discharge speed of the discharge roller. However, if the form is light or has an upward curl, it takes time for the trailing end of the form 1a discharged from the discharge roller 2 to fall, so that the discharge roller 2, the leading end of the following form 1 b discharged at high speed hits the rear end of the preceding form 1 a as shown in FIG. 4 (a), or the lower end thereof as shown in FIG. 4 (b). This caused jams and poor integration. Therefore, in this case, the ratio of the transport speed of the stacker belt 4 to the discharge speed of the discharge roller 2 is set to be high, and after the leading end of the preceding form 1a is sandwiched between the stacker belt 4 and the pressing roller 5, the sheet is quickly transported. As a result, the trailing end of the form 1a is hastened, and the subsequent form 1
The tip of b can be prevented from hitting. In addition, when the processing speed (discharge speed by the discharge roller) is increased, FIG.
The phenomena shown in (a) and (b) occur. In this case, it is desirable to increase the ratio of the conveying speed of the stacker belt 4. On the other hand, when processing short forms, if the overlapping length of the forms on the stacker belt is set to a fixed ratio as in the related art, the absolute length of the overlapping length becomes shorter, and thus the paper is discharged from the discharging roller 2. Depending on the movement of the form, the overlap may not be formed, or the overlap may be too small, resulting in an accumulation failure. For this reason, in this case, it is desirable to lower the ratio of the conveying speed of the stacker belt 4 and thereby increase the ratio of the overlapping length.

[0007]

SUMMARY OF THE INVENTION The present invention has been made on the basis of this finding. The ratio of the speed of transporting a stacker belt to the speed of discharging a form by a discharging means such as a discharging roller is variable, and the processing speed and the characteristics of the form are changed. (Size, basis weight,
This makes it possible to select a ratio suitable for the presence or absence of a curl, etc., whereby it is possible to stably and satisfactorily accumulate forms having various characteristics, and to cope with high-speed processing.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a stacker device for receiving forms sequentially discharged from a discharging means in a state where the forms are partially overlapped on a stacker belt, and stacking them while transporting them. The ratio of the conveying speed of the stacker belt to the discharging speed is variable. According to this configuration, when a desired processing speed (form discharging speed by the discharging means) is selected, it is suitable in consideration of the processing speed and the characteristics (size, basis weight, presence or absence of curl, etc.) of the form to be processed. The speed ratio can be selected, and by operating at that ratio, the occurrence of paper jams on the stacker belt is suppressed, and stable and good stacking becomes possible.

As described above, in the present invention, the ratio of the conveying speed of the stacker belt to the form discharging speed by the discharging means is variable. The variable ratio may be stepless or stepped, and a sufficient effect can usually be obtained by changing the ratio to about three steps. As a method of changing this ratio, a method of driving the stacker belt with a variable-speed drive device independent of the discharge means, connecting the discharge means and the stacker belt to a common drive device, and setting the stacker belt And the like, in which a stepless or stepped transmission is interposed in the drive system reaching the above. When the method of driving the stacker belt with a variable speed driving device independent of the discharging device is adopted, the motor of the driving device and the driving motor for the discharging device can be driven synchronously. Is preferred.
With this configuration, the processing speed can be changed while keeping the ratio constant, and the ratio can be changed at an arbitrary processing speed.

The stacker of the present invention can be applied to any form, for example, a form consisting of a single form, a form in which paper is folded, a form in which paper is folded and pasted, and a postcard or sealed form, a plurality of sheets. It can be used to accumulate forms and the like created by collating the single forms described above, and can be used in combination with any form processing device. Specific examples of the form processing device include a device for cutting a continuous form printed by a printer into individual forms and discharging the form, a device for folding the continuous form and cutting and discharging the form to individual forms, and a form for folding a continuous form. Stack,
A device that cuts individual forms, attaches them together, and discharges them.
A device for overlapping and binding a plurality of cut sheets and discharging the cut sheets can be used.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the stacker of the present invention is combined with a burster will be described below. FIG. 1 is a schematic side view showing a bar star device 10 and a stacker device 9A according to an embodiment of the present invention combined therewith, and the same components as those in the conventional example shown in FIG. . In FIG. 1, reference numeral 10 denotes a burster device, which includes a first feed roller 11 that conveys a continuous form 1A, a second feed roller 12 that rotates at a higher speed than the first feed roller 11, and a first feed roller. 11 and second feed roller 12
, A blade 13 disposed at a position in contact with the continuous form 1A, a discharge roller 2 disposed downstream of the second feed roller 12, a form guide 3, and the like.
Using the horizontal perforations formed in the continuous form 1A, and the first feed roller 11 and the second feed roller 12
Speed difference and individual form 1 by blade 13
And the sheet is discharged by the discharge roller 2 one after another. The discharge roller 2 forms a discharge unit for discharging a form to the stacker 9A.

The stacker device 9A includes a stacker base 6 provided with a stacker belt 4 and a support plate 5 for supporting the lower surface of the stacker belt 4, which is arranged at a position for receiving the form 1 discharged by the discharge roller 2, and a form. A pressing roller 7 for pressing 1 against the stacker belt 4 to apply a conveying force;
A stacking guide 8 and the like arranged at the end of the stacker table 6 are provided. A stacker driving device 15 is connected to the stacker belt 4 so as to drive the stacker belt 4. The stacker driving device 15 is provided independently of a driving device (not shown) for the bar star device 10, and controls the transport speed of the stacker belt 4 at a predetermined processing speed ( It has a function that can be changed in three stages of high speed, medium speed and low speed within a range lower than the form discharge speed by the discharge roller 2). Thus, the ratio of the transport speed of the stacker belt 4 to the form discharge speed by the discharge roller 2 can be changed in three stages of high, medium, and low.

In using the bar star apparatus 10 and the stacker apparatus 9A having this configuration, the processing speed of the bar star apparatus 10 and the characteristics (size, basis weight, presence or absence of curl, etc.) of the form 1 separated from the continuous form 1A are taken into consideration. The ratio of the transport speed of the stacker belt 4 to the discharge speed of the discharge roller 2 is set to the most appropriate one from three stages of high, medium, and low. Then, the operation is performed under these conditions, the continuous form 1A is cut into individual forms 1 by the burster device 10, discharged onto the stacker belt 4 by the discharge roller 2, and accumulated at the rear end of the stacker belt 4. Thus, the discharge roller 2
The ratio of the conveying speed of the stacker belt 4 to the discharging speed of the sheet is suitable for the processing speed and the characteristics (size, basis weight, presence or absence of curl, etc.) of the form to be processed.
The leading end of the form 1 discharged from the discharge roller 2 is satisfactorily superimposed on the rear end of the form 1 previously discharged on the stacker belt 4, so that paper jam does not occur in this portion. The sheet is fed to the rear end of the stacker belt 4 and is collected well.

[0014]

As described above, in the stacker apparatus of the present invention, the ratio of the transport speed of the stacker belt to the form discharging speed by the discharging means can be appropriately determined in consideration of the processing speed and the characteristics of the form to be processed. Since the value can be set, it is possible to smoothly discharge and stack forms without selecting a form, and to perform high-speed processing.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a bar star device and a stacker device according to an embodiment of the present invention combined therewith.

FIG. 2 is a schematic side view showing a conventional stacker device.

FIGS. 3A and 3B are schematic side views illustrating a state where forms are discharged and stacked on a stacker belt.

FIGS. 4A and 4B are schematic side views illustrating a problem that occurs when a form is discharged and stacked on a stacker belt.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 form 1A continuous form 1a preceding form 1b subsequent form 2 discharge roller 3 form guide 4 stacker belt 5 support plate 6 stacker stand 7 holding roller 8 stacking guide 9, 9A stacker device 10 bar star device 11 first feed roller 12 Double feed roller 13 Blade 15 Drive

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenichi Kobayashi 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. Inside Duplo Seiko Co., Ltd. (72) Inventor Naoki Masuda 353 Uedai Seiko Co., Ltd.

Claims (1)

[Claims] 1. A stacker device which receives sheets sequentially discharged from a discharging unit in a state where they are partially overlapped on a stacker belt, and stacks the sheets while transporting them, wherein the stacker belt corresponds to a form discharging speed by the discharging unit. Wherein the ratio of the transport speeds of the stackers is variable.