JP3193097B2 - Paper sorting system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet sorting apparatus. Here, the paper sheets that can be handled by the paper sheet sorting apparatus of the present invention include paper, plastic sheets, metal sheets, and the like.

[0002]

2. Description of the Related Art In a case where sheets stacked on a pallet are fed one by one to a lower step of a printing machine or the like on a printing line or the like, a sheet separation is performed in advance in order to prevent two sheets from being fed. A stack of paper is supplied on a pallet. Conventionally, this paper separation is performed manually.

[0003]

However, in a paper processing line such as a printing line, several tons of paper are used per day, and an operator manually loads a large amount of paper.
It is necessary to keep paper sorting and unloading, and it is hard work.

[0004] The present invention automates the handling of paper sheets,
The purpose is to reduce the burden on workers.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a sheet sorting apparatus which bends stacked sheets, wherein at least one pair of conveyors is connected in series, and at least one of the paired conveyors is connected to the center. A conveyor device that allows the conveyor to be bent freely, first clamping means that rotates in conjunction with the bending of one conveyor and clamps paper sheets to the one conveyor, and clamps paper sheets to the other conveyor. Clamping means, bending driving means for bending and driving at least one of the conveyors, and conveyance driving means for conveying and driving the conveyor of the conveyor device, and carrying in the paper sheets and carrying them out to the next process by this conveyance driving. It has the following.

[0006]

The paper sheets are supported by at least a pair of conveyors constituting a conveyor device, clamped on one conveyor by first clamping means, and clamped on the other conveyor by second clamping means. The sheet is bent along with the bending operation of at least one of the conveyors, and is subjected to sheet sorting.

At this time, the conveyor of the conveyor device carries out not only the above-mentioned bending operation but also the carrying-in operation to carry in and carry out the paper sheets.

[0008]

1 is a schematic view showing a printing line, FIG. 2 is a side view showing a sheet processing apparatus, FIG. 3 is a plan view of FIG. 2, FIG. 4 is a perspective view showing a main part of the sheet processing apparatus, and FIG. FIG. 6 is a schematic view showing an example of the sheet sorting procedure, FIG. 6 is a schematic view showing another example of the sheet sorting procedure, and FIG. 7 is a schematic view showing still another example of the sheet sorting procedure.

Prior to describing an embodiment of the present invention, general working procedures (A) to (L) of a printing line will be described (see FIG. 1).

(A) Unpacking The side of packing paper 2 in which paper 1 is packed is cut open, and a bundle of paper is taken out from the cut packing paper 2.

(B) Paper Sorting The unpacked sheet bundle is bent, and air is blown between the sheets to perform the sheet sorting. This sheet separation is for preventing the sheet fed to the printing machine in the subsequent process from being fed twice, and for enabling the sheet to be fed one by one.

(C) Paper Alignment The sheet bundle subjected to the paper separation is stacked on a pallet 3 by a bar. In this stacking, the sheet bundle is continuously stacked on the pallet 3 without passing through the middle plate.

(D) Printing The stacked sheets 1 are fed one by one to the printing press 4 to print on one side. The printed paper 1 is stacked on a pallet 3. In this stacking, a bundle of sheets divided in small units is placed between the middle plates 6 arranged in multiple stages on the pallet 3 via the spacers 5. That is, in this stacking, in order to prevent ink adhesion caused by stacking a large number of sheets of paper 1 immediately after printing, the printing paper 1 is repeatedly stacked on the middle plate 6 by a predetermined number of small units. Things.

When the printing is completed only by one-sided printing,
Go to (J) and go through (E) to (I) for duplex printing
Go to (J).

(E) Boarding After the printing in the above (D), the stacked sheets 1 are re-stacked into a bar stack. That is, the small unit sheet bundle on each middle plate 6 is transferred onto the pallet 3 for stacking bars, and the middle plate 6 from which the sheet bundle has been removed is removed manually or by a robot.

(F) Inverted sheet separation In the course of the above-mentioned board removal in (E), the sheet bundle is inverted (the remaining one side is turned into a printing surface), and the sheet bundle is bent and ventilated between the sheets. Apply paper sorting at.

(G) Defective paper removal In the course of the board removal in (E), defective papers mixed in the sheet bundle are removed.

(H) Paper Alignment The sheet bundle on which the inverted paper sorting has been performed is stacked on a pallet 3 by a bar.

(I) Printing The stacked sheets 1 are fed one by one to the printing press 4, and the remaining one side is printed. The printed paper 1 is stacked on a pallet 3.

(J) Boarding The paper 1 stacked on the board after the printing of the above (D) or the above (I)
To bar stacking.

(K) Defective paper removal In the process of (J), the defective paper mixed in the sheet bundle is removed.

(L) Shipping The printed paper 1 is shipped in a stacked state.

However, the embodiment shown here uses the sheet processing apparatus 10 shown in FIGS. 2 to 4 in order to automate the sheet sorting operations (B) and (F) in the above-mentioned printing line. is there.

The paper processing apparatus 10 includes a front stocker 11 that supports the paper 1 and moves up and down, a stocker 12 that supports the paper 1 in a stacked manner, and a paper stocker 11 that is stacked on the front stocker 11. And a conveyor device 13 for conveying the stocker 12 to the stocker 12. Then, the sheet processing device 1
0 indicates the operation of the first-stage stocker 11, the second-stage stocker 12, and the conveyor device 13, the type of the paper 1,
Has a control device 100 that automatically controls the operation according to the driving situation of the vehicle.

The pre-stage stocker 11 is vertically moved by a lift device 14 and is additionally provided with an extruding device 15 for chucking the uppermost sheet bundle and extruding it to the conveyor device 13. Is raised so that the sheet bundle is set at the chuck position by the pushing device 15.

The rear stocker 12 is vertically moved by a lift device 16 and is additionally provided with a pull-in device 17 for chucking a sheet bundle conveyed from the conveyor device 13 and pulling the bundle of sheets to the uppermost layer. The uppermost surface is lowered so as to be set to the sheet discharge position by the drawing device 17. The rear stocker 12 is
A rear reference plate 18A, a front alignment plate 18B, and both-side alignment plates 19A and 19B are arranged on the four lower sides of the uppermost surface. The sheet 1 is hit on the rear reference plate 18A, and the uppermost sheet 1 is hit from both sides by both-side aligning plates 19A and 19B which vibrate oppositely in small increments by a both-side aligning drive unit (not shown) to align the sheets.

The conveyor device 13 is configured as follows. The conveyor device 13 connects the pair of first and second conveyors 21A and 21B in series via the connection shaft 22 and also connects the two conveyors 21 around the connection shaft 22.
A and 21B are bendable.

That is, the connection shaft 22 is rotatably supported by the gantry 20. The base of the first arm 24A is bolted to the first pulley 23A rotatably supported around one end of the connection shaft 22, and the support shaft 25A is rotatably supported at the tip of the first arm 24A. And connection axis 2
A first conveyor 21A is wound around a pulley 26A fixed around the two ends and a pulley 27A rotatably supported around the support shaft 25A. On the other hand, the base of the second arm 24B is bolted to the second pulley 23B rotatably supported around the other end of the connection shaft 22, and the support shaft 25B is rotatably connected to the tip of the second arm 24B. A pulley 26B supported and fixed around the connection shaft 22 and a pulley 27B supported rotatably around the support shaft 25B
Is wound around the second conveyor 21B.

A pulley 28 is fixed to the other end of the connecting shaft 22. A pulley 30 fixed to the output shaft of the transport drive motor 29 and a transport drive belt 3 are attached to the pulley 28.
1 is wound. In other words, the rotational force of the transport drive motor 29 rotates the connection shaft 22, and consequently causes the two conveyors 21A and 21B wound around the pulleys 26A and 26B fixed to the connection shaft 22 to be transported and driven. Carry out to the process.

A first bending drive belt 34A is wound around a first pulley 23A to which the first arm 24A is fixed and a pulley 33A (not shown) fixed to the output shaft of the first turning drive motor 32A. ing. That is, the rotational force of the first turning drive motor 32A rotates the first pulley 23A, and thus the first arm 24 fixed to the first pulley 23A.
By rotating A around the connection shaft 22, the first
The conveyor 21A is rotated at an appropriate angle and driven to bend.

A second bending drive belt 34B is attached to a second pulley 23B to which the second arm 24B is fixed and a pulley 33B fixed to the output shaft of the second turning drive motor 32B.
Is wound. That is, the second turning drive motor 32B
Rotates the second pulley 23 </ b> B, and thus the second arm 24 </ b> B fixed to the second pulley 23 </ b> B around the connection shaft 22, thereby causing the second conveyor 2 </ b> B to rotate.
1B is appropriately turned and bent.

Further, the conveyor device 13 is provided with a first clamp roller 35A which turns in conjunction with the bending of the first conveyor 21A and clamps the sheet 1 on the first conveyor 21A. That is, the guide rail 36 is attached to the first arm 24A.
A is extended, and a slider 3 is attached to the guide rail 36A.
7A is fitted, and a lifting cylinder 38 is mounted on the slider 37A.
A supports the bearing chock 39A which can be moved up and down along the slide guide 37S.
Supports a first clamp roller 35A. The support shaft 25A at the tip of the first arm 24A is rotatable by a first clamp moving motor 40A.
The sprocket 41A fixed to the sprocket 41A and the sprocket 42A rotatably supported by the connection shaft 22 include a chain 43A.
Is wound, and the above-described slider 37A is fixed to the chain 43A. As a result, the first clamp roller 35A pivots in conjunction with the bending of the first conveyor 21A, moves laterally by the rotational force of the first clamp moving motor 40A, and moves up and down by the operation of the elevating cylinder 38A. An appropriate position of the sheet 1 on the conveyor 21A is clamped. The bearing chock 39A is the brake 4
4A, so that the first clamp roller 35A can be rotationally locked in a timely manner.

The conveyor device 13 is provided with a second clamp roller 35B which turns in conjunction with the bending of the second conveyor 21B and clamps the sheet 1 on the second conveyor 21B. That is, the guide rail 36 is attached to the second arm 24B.
B is extended, and a slider 3 is attached to the guide rail 36B.
7B is fitted, and a lifting cylinder 38 is mounted on the slider 37B.
B supports a bearing chock 39B which can be moved up and down along a slide guide 37S (not shown), and the bearing chock 39B supports a second clamp roller 35B. A support shaft 25B at the tip of the second arm 24B is rotatable by a second clamp moving motor 40B, and a sprocket 41B fixed to the support shaft 25B and a sprocket 42B rotatably supported by the connection shaft 22. Is wound with a chain 43B, and the above-described slider 37B is fixed to the chain 43B. Accordingly, the second clamp roller 35B rotates in conjunction with the bending of the second conveyor 21B, and the second clamp moving motor 40B rotates.
The sheet 1 is moved laterally by the rotation force of B, is moved up and down by the operation of the elevating cylinder 38B, and clamps an appropriate position of the sheet 1 on the second conveyor 21B. The bearing chock 39B has a brake 44B, and can lock the rotation of the second clamp roller 35B as needed.

However, the control device 100 includes the lifting device 14 and the pushing device 15 of the front stocker 11, the lifting device 16 and the drawing device 17 of the rear stocker 12, the transport drive motor 29 of the conveyor device 13, and the turning drive motor 3.
2A, 32B, lifting cylinders 38A, 38B, clamp moving motors 40A, 40B, brakes 44A, 44B, etc., are automatically controlled according to the type of the paper 1 and the operation status of the paper processing apparatus 10.

When the paper processing apparatus 10 is used in the above-described printing line (B) in the paper separating operation, the front stocker 11 supports the unstacked sheets 1 in the unstacked state, and the rear stocker 11 The stocker 12 supports the sheet 1 on which the sheets have been sorted as described below in a conveyor apparatus 13 in a stacked state. Then, the extruding device 15 attached to the front stocker 11 sequentially feeds the sheets 1 on the front stocker 11 to the conveyor device 13 in block units (sheet bundle 1A) composed of a plurality of sheets.

Hereinafter, a paper separating operation procedure performed by the paper processing apparatus 10 will be described (see FIG. 5).

(A) The sheet 1 on the former-stage stocker 11 is conveyed by the extruder 15 in the state of the sheet bundle 1A by the conveyor device 1.
Carry in 3

(B) The first clamp roller 35A is moved laterally from the original position to clamp the sheet bundle 1A on the first conveyor 21A.

(C) The second clamp roller 35B is moved laterally from the original position to clamp the sheet bundle 1A to the second conveyor 21B almost immediately above the connection shaft 22.

(D) The first clamp roller 35A is rotationally locked by the brake 44A, and the second clamp roller 35B is locked.
The second conveyor 21B (and the second clamp roller 35B) is bent in the positive direction by 67.5 degrees in a state in which is rotatable.

(E) The second clamp roller 35B is laterally moved to clamp the right end of the sheet bundle 1A to the second conveyor 21B, and the second clamp roller 35B is rotationally locked by the brake 44B. Then, the first clamp roller 35
In a state where A is rotatable, the second conveyor 21B (and the second clamp roller 35B) is further bent in the positive direction by 67.5 degrees, and the first clamp roller 35A is moved laterally to move the left end of the sheet bundle 1A to the first position. Clamp to conveyor 21A,
The rotation of the first clamp roller 35A is locked by the brake 44A.

(F) The second conveyor 21B (and the second clamp roller 35B) is bent back by 135 degrees in the reverse direction. As a result, a slack is formed in the middle portion of the sheet bundle 1A. Then, the first conveyor 21A (and the first clamp roller 3)
5A) and the second conveyor 21B (and the second clamp roller 35B) are rocked several times in both forward and reverse directions, and
Ventilate A. This is the paper separation.

After this step (F), both clamp rollers 35
A, 35B are lifted, and the sheet bundle 1A is moved to the rear end stocker 1.
2 may be carried out, but in the present embodiment, step (G) is further performed.
To (I).

(G) The first conveyor 21A (and the first clamp roller 35A) and the second conveyor 21B (and the second clamp roller 35B) are bent so as to form a mountain shape. As a result, air is removed from the sheet bundle 1.

(H) Raise both clamp rollers 35A and 35B to set the sheet bundle 1 on both conveyors 21A and 21B.
Release the clamp of A.

(I) The first conveyor 21A (and the first clamp roller 35A) and the second conveyor 21B (and the second clamp roller 35B) are returned and bent to a horizontal state.

After the completion of the paper separation, the conveyor device 13
Drives the conveyors 21A and 21B to rotate, and unloads the above-mentioned sheet bundle 1A to the rear stocker 12 side. In this way, the sheet bundle 1 </ b> A carried out from the conveyor device 13 is pulled out by the drawing device 17 of the second-stage stocker 12 and transferred onto the second-stage stocker 12.

Incidentally, the sheet separating operation method by the sheet processing apparatus 10 may be performed as shown in FIG. The method of FIG. 6 includes the steps shown in FIGS. 5 (A) to 5 (I).
The steps corresponding to (D) and (E) are modified as follows.

5D, the second clamp roller 35B is rotationally locked by the brake 44B, and the second conveyor 21B (and the second clamp 21B) is rotated in a state where the first clamp roller 35A is rotatable. Roller 35
B) is bent in the positive direction by 67.5 degrees.

5E, the first clamp roller 35A is laterally moved to clamp the left end of the sheet bundle 1A to the first conveyor 21A, and the first clamp roller 35A is connected to the brake 44A. Lock the rotation. Then, with the second clamp roller 35B rotatable, the second conveyor 21B (and the second clamp roller 35B) is rotated.
B) is further bent in the positive direction by 67.5 degrees, and the second clamp roller 35B is laterally moved to move the right end of the sheet bundle 1A to the second position.
The second clamp roller 35B is clamped on the conveyor 21B, and is rotationally locked by the brake 44B.

Further, the method of separating sheets by the sheet processing apparatus 10 may be performed as shown in FIG. The method of FIG. 7 includes the steps of FIG. 5 (A) to FIG.
Steps corresponding to (C) to (E) (where only the second conveyor 21B is bent) are modified into a chevron bending step for both conveyors 21A and 21B. That is, the steps in FIGS. 7A to 7G are as follows.

(A) Same as FIG. 5 (A). (B) Same as FIG. 5 (B). (C) The left end of the sheet bundle 1A is clamped to the first conveyor 21A by the first clamp roller 35A, and the right end of the sheet bundle 1A is clamped to the second conveyor 21B by the second clamp roller 35B.
To clamp. And, both clamp rollers 35A, 3
5B, the first conveyor 21A (and the first clamp roller 35A) and the second conveyor 21B
(And the second clamp roller 35B) are bent so as to form a mountain shape. Then, both clamp rollers 35A, 3A
5B is rotationally locked by brakes 44A and 44B.

(D) Same as FIG. 5 (F). (E) Same as FIG. 5 (G). (F) Same as FIG. 5 (H). (G) Same as FIG. 5 (I).

The operation and effect of this embodiment will be described below. The sheet bundle 1A is supported by a pair of conveyors 21A and 21B constituting the conveyor device 13, is clamped on the first conveyor 21A by the first clamp roller 35A, and is clamped on the second conveyor 21B by the second clamp roller 35B. And at least one of the conveyors 21
A and 21B are bent together with the bending operation, and the paper is discarded.

At this time, the conveyors 21A and 21B of the conveyor device 13 are not only bent but also driven to carry in and carry out the sheet bundle 1A.

As described above, the loading of the sheet bundle 1A
A series of paper sorting and unloading operations can be automated, and the burden on the operator can be reduced.

As described above, the conveyor device 13 itself, which is a sheet separating device, also has the function of transporting the sheet bundle 1A, so that no special transport device is required, and the device can be simplified.

[0058]

As described above, according to the present invention, the handling of paper sheets can be automated, and the burden on the operator can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a printing line.

FIG. 2 is a side view illustrating the sheet processing apparatus.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a perspective view showing a main part of the sheet processing apparatus.

FIG. 5 is a schematic diagram illustrating an example of a sheet separating procedure.

FIG. 6 is a schematic view showing another example of the sheet separating procedure.

FIG. 7 is a schematic diagram showing still another example of the sheet separating procedure.

[Explanation of symbols]

 Reference Signs List 1 paper (sheets) 13 conveyor devices 21A, 21B, conveyor 29 transport drive motor (transport drive unit) 32A, 32B rotation drive motor (bending drive unit) 35A first clamp roller (first clamp unit) 35B second Clamp roller (second clamping means)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-11537 (JP, A) JP-A-50-127711 (JP, A) JP-A-53-106225 (JP, A) JP-A-57-127 141349 (JP, A) Fully open sho 60-93642 (JP, U) Fully open sho 62-20025 (JP, U) Fully open sho 60-90233 (JP, U) Really open sho 50-104380 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65H 3/62

Claims (1)

(57) [Claims] 1. A sheet sorting apparatus for bending stacked sheets, wherein at least one pair of conveyors is connected in series,
A conveyor device that allows at least one of the conveyors to freely bend around the connection portion; a first clamping unit that pivots in conjunction with the bending of one of the conveyors and clamps paper sheets on the one of the conveyors; Second clamping means for clamping paper sheets to the conveyor; bending driving means for bending and driving at least one of the conveyors; and transporting and driving the conveyor of the conveyor device. And a transport driving means for carrying out the paper.