JPS6259018B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper sorting method that is performed as a pretreatment for sending a large number of stacked and cut sheets to a printing machine, etc., and a paper sorting device that implements the method. It is something.

[Conventional technology]

For example, when printing on paper using a printing machine,
In order to feed each sheet of paper one by one under the same conditions, paper separation work must be performed to form an air layer between the stacked sheets, but in the past, this paper separation work was all done manually. Not only is this process extremely inefficient as it requires a great deal of time and effort, but the mass of the paper is large, requiring heavy labor, and there are problems in that the paper cannot be sorted perfectly.

For this reason, conventionally, as a device for mechanically performing this type of paper sorting work,
As disclosed in Japanese Patent Publication No. 58-167334, one end of a stack of sheets is held and the holding direction is repeatedly reversed or quarter-reversed to cause misalignment of adjacent sheets, or Japanese Patent Publication No. 55-40498 As disclosed in the publication, a paper stack is used in which both ends of a stack of paper are shifted in the direction of the paper surface, and this is lifted to form an air layer between the upper layer of paper and the lower layer of paper.

However, this type of device separates a stack of paper at a fixed location, and the latter requires labor to feed the stack of paper to the sorting device or to carry out and remove the separated paper, and the operator's effort is required. The hard labor was unrelievable.

[Problem that the invention seeks to solve]

In view of the above problems, it is an object of the present invention to propose a new paper handling method that automatically performs paper handling and transports the handled paper to a desired position, such as a paper alignment device, and to provide the paper handling device. That is.

[Means and actions for solving problems]

That is, in the paper sorting method of the present invention, as shown in FIG.
12, the sandwiching direction is changed to create a "slippage" between the upper and lower layers of paper a, thereby forming an air layer between the upper and lower layers of paper a. As shown in the figure, when the paper gripping mechanisms 11 and 12 are turned at an acute angle and returned to a state close to their original position, the middle part of the bundle of sheets a is folded due to the delay in displacement, and the gap between the upper and lower sheets of paper a is folded. Since a gap is created between the two, air enters the gap.

Therefore, when the paper gripping mechanisms 11 and 12 are removed from a state in which air has entered between the sheets of paper a and the stack of sheets of paper a is placed on a flat surface, the air between the sheets of paper a will be removed from the edge of the paper that was being gripped. When the paper is discharged, an air layer is formed between the upper layer and the lower layer over the entire surface of the paper a, thereby achieving a sorting operation.

The paper sorting device of the present invention implements the principle, while
It is structured to convey a bundle of sheets to a destination position, and includes a transfer belt device installed so as to reciprocate between two points and suddenly change the running direction at at least one point, and a sheet carried by the transfer belt device. It is composed of a paper gripping mechanism that clamps or releases the ends of the paper stack, a chuck release means that releases the paper gripping mechanism at the two points, and a drive means that drives the transfer belt back and forth. .

Therefore, with one end of a paper bundle of an appropriate number of sheets being held between the paper gripping mechanism at one point, the paper gripping mechanism carried on the transfer belt suddenly changes direction while being transferred to another point by the transfer belt device. By doing so, an air layer is formed between the upper and lower layers of the paper bundle based on the above-mentioned principle, and the paper sorting operation is completed at the same time as the transfer is completed.

Furthermore, by reversing the transfer belt device from one point to another, it becomes possible to reversely transfer a stack of sheets at the same time as separating the sheets.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a paper sorting device that implements the method of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a paper feed tray for stacking papers that require paper sorting processing, and in this embodiment, a paper sorting device is shown which transfers the sheets to a paper aligning device 2 adjacent to the paper feed tray 1. Reference numeral 3 denotes a transfer belt device consisting of a pair of endless chain belts 3a, 3b that pass close to the left and right upper ends of the paper feed table 1, and the endless chain belts 3a, 3b are located at front and rear positions so as to sandwich the paper feed table 1. The pulley 4 is installed parallel to the
a, 4b, 4c...4i, a driving wheel 5, and a tension pulley 6 to move synchronously, and an endless chain belt 8 is suspended between an electric motor 7 and the driving wheel 5, and the electric motor 7 moves the Move the belt device 3 to a predetermined range (arrows AB and A'B')
It moves reciprocatingly and repeatedly, and comprises a reversing handling section 9 that handles the sheets loaded on the paper feed tray 1 in the reversed direction, and a normal position handling section 10 that handles the sheets in the same direction, each of which is connected to a passing pulley 4e. The paper aligning device 2 is moved upward. Paper gripping mechanisms 11 and 12 that automatically grip or release the ends of a predetermined amount of paper are installed at the ends of the two handling sections 9 and 10, respectively, and are horizontally mounted between the endless chain belts 3a and 3b. . The two paper gripping mechanisms 11 and 12 have a symmetrical structure so as to face the right end or left end of the stacked sheets a, respectively, and the two endless chain belts 3
A plurality of chuck portions 15, 15, . . . are formed in horizontal rows on a base rod 14 installed between a and 3b. The end chuck portion 15a rotationally connects a pinion 17 that meshes with a rack portion 16a of a release shaft 16 that is slidably inserted into the base rod 14 with each pinion 17 in the horizontal row via an interlocking shaft 18. At the same time, a push shaft rack 19 that meshes with the pinion 18 is inserted perpendicularly into the base rod 14, and a movable jaw 21 is provided at the tip of the push shaft rack 19 to face a fixed jaw 20 that is fixedly and protrudes from the base rod 14. It is made by fixing. The end chuck part 1
Each of the other chuck parts 15 parallel to 5a has a structure in which the release shaft 16 of the end chuck part 15a has been removed, and the push shaft rack 19 is always moved in the direction of arrow C by means of a coil spring 22 fitted onto the interlocking shaft 18. The movable jaw 21 is elastically biased and an appropriate elastic force is applied to the fixed jaw 20 in the direction in which the movable jaw 21 closes. Also code 2
Reference numeral 3 designates an engaging roller rotatably attached to the upper end of the release shaft 16 of the end chuck portion 15a, and the engaging roller 23 is connected to the reversal handling portion 9 and the normal position handling portion 10.
In the two-handling process, chuck release plates 24a, 24b, 25 provided above the transfer belt device 3 near the paper feed tray 1 and above the paper alignment device 2, respectively.
a, 25b. The chuck release plate 24
a, 24b, 25a, and 25b are each supported via a drive device such as an electromagnetic solenoid 28, and are driven in parallel in the direction of arrow D. By driving the transfer belt device 3, the paper gripping mechanism 11,
12 is the chuck release plate 24a, 24b, 25
When reaching positions a and 25b, the chuck release plates 24a, 24b, 25 are moved in a direction that presses the engaging roller 23.
Protrude a and 25b. The chuck release plate 24
Due to the projections of a, 24b, 25a, and 25b, the chucks 15 and 15a press and move the release shaft 16 in the direction of arrow E through the engaging rollers 23, and rotate the pinion 17 against the coil spring 22. A movable jaw 2 is fixed to the tip of each push shaft rack 19.
1 from the fixed jaw 20, and the chuck part 1
5, 15a will be opened. Code 26,2
Reference numerals 7 denote paper handling sections formed in a part of the transfer belt device 3, and are formed at least at one location in the reversal handling section 9 and the normal position handling section 10. The paper sorting parts 26 and 27 are connected to the endless chain belt 3.
The structure is such that the moving direction of pulleys 4a and 3b is changed at an acute angle, and in this embodiment, the passing pulleys 4a and 4
At the position h, the transport direction is bent at an acute angle.

Incidentally, reference numeral 29 in the figure indicates side plates provided on both sides of the paper transport path.

Next, the operation of the paper sorting device having the above configuration will be explained. When reversing and sorting is performed, the paper gripping mechanism 11 is repeatedly moved back and forth within the range of arrow AB. When the arrow A position is reached, the paper gripping mechanism 11
Since the engaging roller 23 is pressed by the chuck release plate 24a driven by the electromagnetic solenoid 28 and the movable jaw 21 is retracted from the fixed jaw 20, all the chuck parts 15, 15a are in the open state and the paper on the paper feed tray 1 is released. It is in the upper limit position. Therefore, when an appropriate number (several hundred sheets) of the end of a bundle of sheets a is pushed between the jaws 20, 21 of the chuck portions 15, 15b, the electromagnetic solenoid 28 is activated by an appropriate sheet detection mechanism (not shown). The chuck release plate 24a is driven to retreat, and the electric motor 7 is driven to start the transfer.

That is, when the chuck release plate 24 retreats, the movable jaw 21 protrudes toward the fixed jaw 20 due to the elastic return of the coil spring 22, firmly clamping the end of the bundle of sheets a, and changing the movement path of the endless chain belts 3a, 3b. When the chuck release plate 24b is moved at this position by the electromagnetic solenoid 28 and presses the engaging roller 23, all the chuck parts 15, When the sheet 15a is released, the bundle of sheets a is dropped and stacked at the top position of the sheet aligning device 2. The paper sorting action is performed during the above-mentioned transfer, and the
When the endless chain belts 3a and 3b acutely change their running direction at position a, the paper gripping mechanism 11 also changes its direction at the same time. The bundle of sheets A that is sandwiched between the two sheets causes a shift between the upper layer sheet and the lower layer sheet, and is folded. Therefore, air enters the folded gap and the desired paper sorting effect can be obtained. Further, the paper gripping mechanism 11 that has released the paper a moves back along the original path again to return to the paper feed tray 1 position, and repeats the operation.

Next, when performing normal position sorting, the paper gripping mechanism 12 is repeatedly transferred back and forth within the range of arrows A'B'. In this case, the paper gripping mechanism 12 is oriented at an acute angle at the positions of the pulleys 4h and 4g. By changing the above, it is possible to obtain a paper sorting effect similar to the above-mentioned inversion sorting state, and also supplying a bundle of sheets a from the paper feed table 1 to the paper gripping mechanism 12 and releasing the bundle of sheets a above the paper aligning device 2. are chuck release plates 25a and 2, respectively.
5b presses the engaging roller 23, and is performed in the same manner as in the case of reversing and handling.

〔Effect of the invention〕

As described above, the paper sorting method of the present invention can achieve a sufficient paper sorting effect while transporting the paper to the target position, and the structure of the apparatus for carrying out the method is simple, and automation can be achieved. The practical effects after implementation of the present invention are extremely large.

[Brief explanation of the drawing]

1 to 3 are explanatory diagrams showing the paper sorting method of the present invention, FIG. 4 is an overall schematic front view of the paper sorting device of the present invention, FIG. 5 is a plan view of the paper gripping device, and FIGS. 6 and 7 are sectional views taken along the - line and - line in FIG. 5. 1... Paper feed table, 2... Paper aligning device, 3... Transfer belt device, 7... Electric motor, 9... Reversing and sorting unit,
DESCRIPTION OF SYMBOLS 10... Normal position sorting part, 11, 12... Paper gripping mechanism, 14... Base rod, 15, 15a... Chuck part, 24a, 24b, 25a, 25b... Chuck release plate, 26, 27... Paper Handling section, 28...Electromagnetic solenoid.

Claims (1)

[Scope of Claims] 1. Moving the holding part from one point to another point while suddenly changing the direction in which the paper bundle is held, using the direction of the holding end that holds one end of the paper stack as an axis of rotation,
A paper sorting method characterized in that, at the same time as the paper bundle is transported, the abrupt change in the nipping direction causes a folded portion due to a shift between adjacent sheets in the paper bundle, thereby forming an air layer between the sheets. 2. A transfer belt device 3 installed so as to reciprocate between two points and abruptly change the direction of travel 26; 27 at at least one point; a paper gripping mechanism 11; 12; chuck release means 24a, 24b; 25a, 25 that engages with the paper gripping mechanism 11; 12 at the two points mentioned above to bring the paper gripping mechanism 11; 12 into a released state;
b, and a drive means 7 for reciprocating the transfer belt device 3, the sudden change 26 in the running direction of the transfer belt device 3;
A paper handling device characterized in that a folded portion is formed between adjacent sheets of a stack of sheets a held by a paper gripping mechanism 11; 12 by a paper holding mechanism 27, and an air layer is formed between the sheets.