JPH0114582Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a processing device for large paper sheets, in particular, a processing device for large paper sheets that automatically performs the work of accumulating large paper sheets such as non-standard size mail, taking them out and sending them out. Regarding.

2. Description of the Related Art Among conventional paper sheet processing apparatuses, apparatuses for processing small paper sheets such as regular-sized mail items have become rapidly popular in recent years as labor-saving devices.

However, a device for sorting large paper sheets such as non-standard size mail has not been put into practical use, and only a few devices have been put into practical use.
102978 (title of invention: large mail sorting device). In addition, the coding desk of this large mail sorting device relies heavily on manual labor, such as manually taking out large mail and putting it into a case. Since the operator has to perform two tasks: keying in the postal code code, it is a heavy burden on the operator and the processing speed is low.

In addition, non-standard size mail items are generally heavy, and manual retrieval work places a heavy burden on workers.

The purpose of this invention was made based on the above circumstances, and its purpose is to automate the work of accumulating, taking out, and sending out large paper sheets such as non-standard size mail, and to significantly reduce the burden on workers. To provide a processing device for large-sized paper sheets that can reduce the number of paper sheets and reliably process the paper sheets.

The large paper sheet processing device of the present invention includes a detector for accumulating a group of paper sheets and detecting the front end of the group of paper sheets, and a stacking plate for pressing the end of the group of paper sheets, and the pressing direction by the stacking plate is A stacking section inclined at a certain angle from a horizontal plane; a plurality of toothed belts for holding and moving the bottom and one side of the group of paper sheets; a single take-out unit including a plurality of vacuum suction mechanisms for suctioning the paper sheets at the front end one by one and a reciprocating driver for reciprocating the vacuum suction mechanisms; and the paper sheets sucked and taken out. and a conveying section for delivering the material to the next stage.

In other words, the large paper sheet processing device of the present invention has the following features:
A stacking board that includes a plurality of toothed belts that hold and move the bottom and one side of the paper sheets, a stacking board that presses the end of the stacked paper sheets, and a detector that detects the front end of the stacked paper sheets. a stacking section whose pressing direction is inclined at a certain angle from the horizontal plane; a single-sheet take-out section for taking out the paper sheets accumulated in the stacking section one by one; A processing device for large paper sheets, which includes a conveyance section for sending out sheets, and a single takeout section that includes a plurality of vacuum suction mechanisms for sucking paper sheets and a reciprocating driver for reciprocating the vacuum suction mechanisms. The mechanisms are configured to be independently rotatable in the vertical and horizontal directions.

Next, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1a and 1b are a plan view and a side view showing an embodiment of the present invention, and the large paper sheet processing apparatus shown in FIGS. 34.

The stacking section 1 includes a toothed belt 2 that holds the side surfaces of the paper sheets, a toothed belt 3 that holds the bottom surface of the paper sheets,
4, and a stacking board 5 that holds the ends of the stacked paper sheets.

The toothed belts 2, 3, 4 are equipped with a detector 10, which will be described later.
It is moved in the rotational direction A by a motor or the like (not shown) in response to a signal from. Further, the toothed belt 2 is installed on the side plate 6, and the toothed belts 3 and 4 are installed on the bottom plate 7. Further, the bottom plate 7 has a structure in which it is inclined at a certain angle from the horizontal plane.

A slide bearing 8 is installed at the end of the stacking plate 5, and the stacking plate 5 is supported by a rail 9.
It has a structure that allows it to move in the movement direction B while being guided. Further, the lower end C of the stacking plate 5 is supported between the teeth of the toothed belts 3 and 4 and is moved in synchronization with the toothed belts 3 and 4.

Next, the detector 10 is installed so as to be embedded in the bottom plate 7, is composed of a reflective photoelectric switch, etc., and has a function of detecting the lower end of the paper sheet.

Next, as shown in detail in FIGS. 2a, b, and c, the single-sheet takeout unit 11 has the function of taking out paper sheets one by one from the stacking unit 1 to the conveying unit 34, and is a part of the large paper sheet processing apparatus. A guide mechanism 13 fixed to the main body side, and toothed belts 3, 4 guided by this guide mechanism 13.
a slide mechanism 12 movable in a direction parallel to the
It is constituted by an air cylinder 14 that moves this slide mechanism 12.

The slide mechanism 12 mainly includes the front and rear slide mechanism 1.
5, left and right rotation mechanism 16, and vacuum suction mechanism 17
a, 17b. The front and back slide mechanism 15 includes a slide body 18 and front and rear guide bearings 19a, 19b, 19c, 19d, 19.
It is composed of left and right rotation bearings 20a and 20b. The left and right rotation mechanism 16 includes a rotation mechanism main body 21, left and right guide rollers 22, and vertical rotation bearings 23a and 23.
It is composed of b. Vacuum suction mechanism 17a,
17b is a vacuum suction pad 24 made of rubber, upper and lower plate springs 25a, 25b, upper and lower springs 26a,
26b, a spring 27, a guide pin 28, and a vacuum hose 29, and the pressure inside the vacuum suction pad 24 is controlled by a vacuum solenoid valve (not shown).
Can be changed by turning ON/OFF.

The guide mechanism 13 mainly includes the front and rear slide guides 3
0, left and right forced guides 31, and up and down forced guides 3
2a and 32b. Here, the slide main body 18 is mechanically fastened to the air cylinder 14 (the cylinder is provided in a fixed relationship on the main body side of the large paper sheet processing device), and is pivotally supported by the front and rear guide bearings 19a. ,19b,1
9c, 19d, 19e, 19f, 19g, 19h
The structure is such that it can be moved forward and backward by a fixed distance by the air cylinder 14 while being guided by rolling on the front and rear slide guides 30.
The rotation mechanism body 21 of the left and right rotation mechanism 16 is rotatably supported by the slide body 18 via left and right rotation bearings 20a and 20b, and the left and right guide rollers 22 (which are pivotally supported by the rotation mechanism body 21)
Since its movement is restricted by the left and right forced guides 31, the angle at which it can rotate is limited. Also,
The left and right forced guide 31 has a structure consisting of a parallel portion that is parallel to each other by a certain distance L ₁ and a tapered portion that is inclined by a certain distance L ₂ . Therefore, the movable part 33 of the air cylinder 14 is moved forward, and the left and right guide rollers 22 are guided by the left and right forced guides 31 and immediately move forward by an initial fixed distance _L1 .
The left-right rotation mechanism 16 is kept in a fixed orientation, but thereafter the guide roller 22 can freely move laterally between the left and right forced guides 31, so the left-right rotation mechanism 16 can rotate left and right.

Next, the vacuum suction mechanisms 17a and 17b are rotatably supported by the rotation mechanism main body 21 via vertical rotation bearings 23a and 23b, respectively.
Spring force is applied by the upper and lower springs 26a and 26b (stretched between the rotating mechanism main body 21 and the vacuum suction mechanisms 17a and 17b, respectively) to direct the toothed belts 3 and 4 in a direction parallel to the guide. Since the movement of the pin 28 (coaxially connected to the vacuum suction pad 24) is restricted by the vertical forced guide 32a or 32b, the rotatable angle is limited. Further, as shown in detail in Fig. 4, the vertical forced guides 32a and 32b have a parallel portion that is parallel to each other for a certain distance _L3 , and then a certain distance after that.
The structure includes a tapered portion inclined by _L4 . Therefore, when the movable part 33 of the air cylinder 14 is moved forward, the posture of the vacuum suction mechanisms 17a and 17b remains the same as that of the toothed belts ₃ and 4 until the tip of the guide pin 28 separates from the parallel part at a distance L3. It is kept in a parallel orientation, but after that the vacuum suction mechanism 17
a and 17b can be rotated up and down.

That is, the vacuum suction mechanisms 17a and 17b can be rotated left and right when the movable part 33 of the air cylinder 14 is moved forward, and the upper and lower springs 26
Although it is possible to rotate up and down by receiving a force larger than the spring force of a and 26b, when the movable part 33 is retracted, it is kept parallel to the toothed belts 3 and 4.

Next, as shown in FIGS. 1a and 1b, the conveyance unit 34 transports the paper sheets taken out from the single takeout unit 11 one by one.
The roller 35 has the function of feeding each piece to the next stage.
a, 35b, a belt 36 with push pins, a diagonal guide 37, and front guides 38a, 38b, and paper sheets are conveyed in the conveyance direction D by the belt 36 with push pins. Ru.

Next, the operation and effects of the embodiment shown in FIGS. 1a and 1b will be explained in detail with reference to FIGS. 2a to 7.

First, paper sheets are supplied to the stacking section 1. The rear end of the paper sheet group is supported by the stacking plate 5, and one side end and lower end of the paper sheet group are supported by the toothed belt 2 and the toothed belts 3 and 4, respectively. In addition, the accumulation section 1
Since the slope is slanted, paper sheets can be stably accumulated. Here, before the paper sheets are stacked in the stacking section 1, the toothed belts 2, 3, and 4 are operated by motors (not shown).
Detector 1 is constantly rotating in rotation direction A.
0 detects the bottom edge of the paper sheet, the toothed belts 2, 3, 4 are activated by a signal from the control section (not shown).
stops. That is, the toothed belts 2, 3, and 4 are controlled so that the group of paper sheets is stacked such that the front end of the group of paper sheets is always at a constant position at the front end of the stacking section 1.

Here, when the front end of the paper sheet group comes to a certain position,
The one-sheet takeout unit 11 is driven by a signal from a control unit (not shown), moves the movable unit 33 of the air cylinder 14 forward, and picks up the paper sheets in the front row of the paper sheet group using the vacuum suction mechanisms 17a and 17b. vacuum suction pad 24
After the paper sheets are attracted by the paper sheets, the movable part 33 is moved back to take out the paper sheets in the front row of the paper sheet group. Here, for paper sheets of various sizes and shapes, such as large mail items, the posture of the paper sheets stacked in the stacking section 1 cannot be fixed, as shown in Fig. 5 a and b. As shown in the figure, there are four types of accumulation postures a, b, c, and d. In other words, if the suction direction of the vacuum suction mechanisms 17a and 17b of the single takeout section 11 is fixed,
As shown in FIGS. 5a and 5b, if the paper sheets are stacked at a large angle, the suction surface of the vacuum suction pad 24 and the paper surface of the paper sheets may not match.
As a result, a gap is created between the suction surface and the paper surface,
Since the pressure inside the vacuum suction pad 24 is released to atmospheric pressure, the suction force is lost, resulting in a state in which paper sheets cannot be taken out.

Therefore, in the large paper sheet processing apparatus shown in FIGS. 1a and 1b, corresponding to the paper sheet stacking postures a to d
A structure is adopted in which the direction of the suction surface of the vacuum suction pad 24 is automatically changed. That is, the single takeout section 11 is provided with a left-right rotation mechanism 16 that can accommodate the horizontal inclination of paper sheets, and vacuum suction mechanisms 17a and 17b that can accommodate the vertical inclination of the paper sheets. For example, when the paper sheets are tilted as shown in stacking position b in FIG. 5a, the vacuum suction mechanism 17a first comes into contact with the paper sheets as the slide mechanism 12 moves forward. At this time, the vacuum suction mechanism 17b has not yet come into contact with the paper sheet. Here, the vacuum suction mechanism 17a
receives a reaction force F ₁ from the paper sheet, so the left-right rotation mechanism 16 rotates around the left-right rotation bearings 20a, 20b. And the vacuum suction mechanism 17
b contacts the paper sheet, the vacuum suction mechanism 17b contacts the paper sheet, receives the reaction force _F2 , and the vacuum suction mechanism 17a
By balancing the reaction force F ₁ of
6 stops. Similarly, the vacuum suction mechanism 17a, 1
The vacuum suction mechanisms 17a, 17b are activated by the reaction force that the upper and lower leaf springs 25a, 25b of 7b receive from the paper sheets.
rotates around vertical rotation bearings 23a and 23b, and corresponds to the vertical inclination of the paper sheet.

By doing the above, the paper surface of the paper sheet and the suction surface can be made to coincide with each other.

In addition, among large mail items, paper sheets 40 hung with strings 39 as shown in FIG. 6 are the objects to be processed. Regarding these paper sheets 40, since the strings 39 have a constant thickness, there is a level difference at the boundary between the surface of the strings 39 and the paper surface of the paper sheets. When the suction surface of the vacuum suction pad 24 hits this boundary line, as shown in FIG.
Due to the difference in level between the string 39 and the paper sheet 40, a gap 42 is created between the vacuum suction pad 24 and the paper sheet 40, which deteriorates the vacuum suction function. Here, since the string 39 is usually hung horizontally or vertically on paper sheets, if the diameter of the vacuum suction pad 24 is D and the width of the string is W, then the distance between the centers of the left and right vacuum suction pads 24 is L ₅ If L ₅ >D+W is maintained, even if one vacuum suction pad 24 is caught on the string 39, the other vacuum suction pad 24 will not be caught on the string 39. Therefore, if the suction force of one vacuum suction pad 24 is made larger than the force that pulls paper sheets 40 from the stacking section 1 to the conveyance section 34, for example, if one vacuum suction pad is attached to the string 39, Even if the paper sheet 24 is stiff, the other vacuum suction pads 24 normally hold the paper sheet 40, so the paper sheet can be reliably placed in the stacking section 1.
It can be pulled out to the conveying section 34 from there.

In this way, the vacuum suction mechanism 17a,
The paper sheets held by the paper sheets 17b are taken out from the stacking section 1 by the slide mechanism 12 driven by the air cylinder 14 and stopped on the conveying section 34. Then, at the same time as the stoppage, the vacuum solenoid valve (not shown) is turned off, and the vacuum suction mechanisms 17a and 17b are turned off.
By releasing the suction pressure to the atmosphere, the paper sheets are allowed to freely fall into the conveying section 34.

The paper sheets that have freely fallen onto the conveyance section 34 are guided by the diagonal guide 37 and the front guides 38a and 38b, and are pushed by the push pin belt 36 according to a signal from the control section (not shown). It is transported to the next stage.

As explained above, the large paper sheet processing device of the present invention is equipped with a vacuum suction mechanism that swings vertically and horizontally independently in each takeout section, so that the large paper sheets are not stacked at an angle in the stacking section. Paper sheets can be safely and reliably taken out. Furthermore, by arranging the center position of the vacuum suction mechanism to be shifted by a certain distance in the vertical and horizontal directions, there is an effect that paper sheets hung on a string can be reliably taken out.

[Brief explanation of the drawing]

Fig. 1 a, b is a plan view and side view showing an embodiment of the present invention, Fig. 2 a, b, c are Fig. 1 a, b
FIG. 3 is a side view showing details of the vacuum suction mechanism shown in FIGS. 2 a and b, and FIG. 4 is a guide shown in FIG. 3. 5A and 5B are side views for explaining the operation of the pin, and FIGS. Figure 6 is a front view showing how the paper sheets shown in Figures 5a and b are tied together, and Figure 7 shows the paper sheet strings shown in Figure 6 and the vacuum suction pads shown in Figures 5a and b. FIG. 1...Accumulation part, 2-4...Toothed belt, 5...
Accumulating plate, 6... Side plate, 7... Bottom plate, 8... Slide bearing, 9... Rail, 10... Detector,
11...Single takeout section, 12...Slide mechanism, 1
3... Guide mechanism, 14... Air cylinder, 15
...Back and forth sliding mechanism, 16...Right and left rotation mechanism,
17a, 17b...Vacuum suction mechanism, 18...Slide body, 19a-19h...Front and rear guide bearings, 20a, 20b...Right and left rotation bearings,
21... Rotation mechanism main body, 22... Left and right guide rollers, 23a, 23b... Vertical rotation bearing, 2
4...Vacuum suction pad, 25a, 25b...Upper and lower leaf springs, 26a, 26b...Upper and lower springs, 2
7... Spring, 28... Guide pin, 29...
...Vacuum hose, 30...Front and rear slide guide, 3
1... Left and right forced guides, 32a, 32b... Up and down forced guides, 33... Movable part, 34... Conveyance part,
35a, 35b...Roller, 36...Belt with push pin, 37...Diagonal guide, 38a, 38b...
...Front guide, 39... String, 40... Paper leaf,
42... Clearance, A... Rotation direction, B... Moving direction, C... Lower end, D... Conveying direction, a to d...
Accumulation attitude, L ₁ to _{L 4} ... constant distance, L ₅ ... distance between centers, F ₁ , F ₂ ... reaction force.

Claims (1)

[Claims for Utility Model Registration] Toothed belts 3, 4 provided on the bottom surface inclined at a certain angle from the horizontal plane, and provided on the toothed belts 3, 4 in the same direction as the toothed belts 3, 4. A stacking board 5 that runs synchronously, and a front end of a group of paper sheets stacked with their lower ends placed on the toothed belts 3, 4 and leaning against the stacking board 5 are connected to the toothed belts 3, 4 and a detector 10 that detects when the accumulating plate 5 reaches a certain position on the higher side of the toothed belts 3, 4 and stops the running of the toothed belts 3, 4 and the accumulating plate 5; a stacking section 1 provided with the above-mentioned stacking section 1; a single-sheet take-out section 11 for taking out the front end of the sheet group one by one; and a transport section 3 for sending out the paper sheets sent from the single-sheet take-out section 11 to the next stage.
In the paper sheet processing apparatus configured by providing the above-mentioned toothed belts 3 and 4,
a front-rear slide mechanism 15 that is guided so as to be able to reciprocate in a direction parallel to the , and a reciprocating driver 14 for reciprocating the front-rear slide mechanism 15 .
, a plurality of vacuum suction mechanisms 17a and 17b for suctioning paper sheets, which are attached to the front-rear slide mechanism 15 so as to be rotatable vertically and left-right;
Rotation forcing mechanisms 22, 31, 2 that allow the vacuum suction mechanisms 17a, 17b to rotate vertically and horizontally when the longitudinal slide mechanism 15 moves forward, with the rotation forcing mechanisms 7a, 17b facing in a direction parallel to the toothed belts 3, 4;
8, 32a, 32b, and when the front end of the group of paper sheets is detected by the detector 10, the reciprocating driver 14 advances the front and rear guide mechanism 15 and the vacuum suction mechanism 17a, 1
After the paper sheets at the front end of the group of paper sheets are attracted to the paper sheets 7b, the back and forth slider mechanism 15 is moved back by the reciprocating driver 14, and the vacuum suction mechanism 17a,
A processing device for large paper sheets, characterized in that the paper sheets adsorbed on the 17b are transferred to the transport section 34.