JPH06344687A - Sheet polymer turning device - Google Patents

Abstract

(57) [Summary] [Purpose] A polymerized sheet can be reliably separated,
Being able to turn easily and quickly with a simple structure. [Structure] The sheet 7 is sandwiched between the ends of the polymer of the sheet 7 by a clamp portion 8, and the sheet 7 can be opened with a predetermined bending. The turning roller 15 can be brought into contact with the end position of the sheet 7 by the moving means 13. The turning roller 15 contacts the sheet, and the sheet 7 is separated only by rotating. Since the sheet 7 continues to be in contact with the turning roller 15 side due to its rigidity while being separated, the turning roller 1
After the sheet 5 comes into contact with the sheet 7, the moving means 13 returns and even if the turning roller 15 moves away from the sheet polymer position, it can be turned only by its rotation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet polymer turning device capable of sequentially turning over each sheet of a sheet polymer.

[0002]

2. Description of the Related Art In a printing apparatus, particularly in a stencil printing apparatus in which a large amount of ink is transferred during printing, a printed printing paper is superposed and stacked on a discharge section. At this time, the back side of the superposed printing paper is There is a problem of so-called set-off, which is contaminated by the printed image on the surface that is not completely dry.

Conventionally, in order to reduce this set-off, the plate making opening at the time of plate making is made smaller to reduce the amount of ink transfer, and the viscosity of the ink is made lower to accelerate the penetration into paper, and the printing paper having good water absorption. Various measures have been taken such as using.

As a result of the above-mentioned efforts, the set-off phenomenon hardly occurs in ordinary printing. However, in the case of paper with poor ink permeability such as postcards, there may still be some set-off stains, and such stains are not commercially acceptable, and a perfect method has been longed for. It was Therefore, as a countermeasure against set-off, there is a method of preventing set-off by feeding an interleaf sheet between the print-receiving papers.

[0005]

The method of preventing set-off by the use of interleaving paper is perfect in effect, but it is troublesome to manually perform, and a device for feeding from the paper feeding side has been put into practical use. However, this device has a problem that the structure is complicated and the size is increased. Further, since the general-purpose printing paper does not set-off without the use of slip-sheet, no problem occurs when only this kind of non-set-off paper is used. Therefore, the above-mentioned slip-sheet device is no longer seen.

[0006] By the way, as a means for interleaving papers which are easily set off, one side of a plurality of sheets is bound in advance and superposed, and a paper to be printed is sandwiched between the sheets from the opening side of the sheet polymer. It is possible to prevent the set-off. However, in this case, while the printing machine ejects the printing paper continuously and at high speed, it is possible to match the sheet turning timing with the sheet ejection timing due to the bending characteristic of the sheet itself. It was difficult, and I could not turn the seat quickly. The above problems hinder the practical use of a sheet polymer turning device that sequentially turns sheets of which one side is bound (such as books).

The present invention has been made in view of the above points, and an object of the present invention is to provide a sheet polymer turning device that can easily turn over a polymerized sheet. Is to be achieved reliably, promptly, and with a simple configuration.

[0008]

In order to achieve the above object, the sheet polymer turning device of the present invention comprises a clamp portion 8 for holding one side of the sheets 7 so that the plurality of sheets 7 can be opened. , The separation feeding unit 4 for sequentially turning the sheet 7 of the clamp unit 8, and the separation feeding unit 4
Is equipped with a turning roller 15 which is provided in the vicinity of the clamp portion 8 and rotates in the sheet turning direction, and a moving means 13 which moves the turning roller 15 with respect to the surface of the sheet 7.

[0009]

At the position where the turning roller 15 contacts the sheet 7, one sheet 7 in contact with the turning roller 15 is separated from the superposed sheet 7. Next, the turning roller 1
Even when the sheet 5 is separated from the sheet 7, the sheet 7
The sheet 7 is in contact with the turning roller 15 due to its rigidity, and the sheet 7 is turned by the rotation of the turning roller 15.

[0010]

EXAMPLE FIG. 1 is a side view showing a sheet polymer turning device according to the present invention. This sheet polymer turning device 1
Each of the components is arranged on a horizontal base 2, and is roughly composed of a sheet holder 3 and a sorting unit 4.

Locking pieces 5a and 5b having a predetermined length are provided upright on the upper portion of the base 2 along the width direction (depth direction in the drawing).
A locking magnet 6 is provided on the locking piece 5a. The sheet holder 3 has a clamp portion 8 that holds one end portion of a plurality of sheets 7 such as paper sheets that are stacked.

The clamp portion 8 includes a removable locking piece 8a between the locking pieces 5a and 5b, a positioning piece 8b provided by the thickness of the sheet 7, and a sheet 7 positioned by the positioning piece 8b. It is composed of a clamp 8c which is pressed against the side of the locking piece 8a. A general-purpose paper clamp may be used as the clamp 8c. A leaf spring 9 is erected on the locking piece 8a of the clamp portion 8 along one surface side of the seat 7.

The sheet holder 3 has locking pieces 5a and 5b.
The locking piece 8a is fixedly held by the magnet 6 in an upright state with the locking piece 8a therebetween. The sheet holder 3 is freely detachable when the sheet 7 is replaced. Then, as shown in the figure, with the sheet holder 3 fixed on the base 2, the sheet 7 has a predetermined amount depending on the thickness and bending (rigidity) characteristics of the sheet 7 and the spring force of the leaf spring 9. L1 is projected in the height direction and bent in a curved shape.

The separating / feeding section 4 is provided on the side of the sheet holder 3 and on the turning side of the sheet 7. A horizontally rotatable arm 12 is attached to a vertically mounted support base 10 via a shaft 11.
Is pivotally supported. On the upper part of the support base 10, the moving means 13
Is provided, and the operating piece 13a of the solenoid 13 is connected to the one end 12a of the rotating arm 12.

At the other end 12b of the rotating arm 12, there is provided a collapsing roller 15 made of an elastic material such as rubber which is rotatable in the direction A in the figure. This turning roller 15
Through a pulley 16 provided coaxially with the shaft 11 and two belts 17a and 17b to rotate the rotary shaft 19 of the motor 19.
The driving force of the motor 19 can be transmitted to the turning roller 15 at all times. The rotation speed of the motor 19 appears according to the turning condition of the turning roller 15, and the faster the operation is, the more stable the operation is. In this embodiment, the peripheral speed of the roller 15 is set to 1 m / s or more.

When the solenoid 13 is energized, the operating piece 13a expands and contracts to rotate the other end 12b of the rotating arm 12 in the direction B in the figure. The end portion 12b is moved in the B'direction (position shown in the figure) in the drawing.

By the way, the turning roller 15 is positioned so as to come into contact with the sheet 7 at a position displaced from the vertex position of the polymer of the sheet 7 in the turning direction by a predetermined amount as shown in the figure.

Next, the operation of the above configuration will be described. The driving force of the motor 19 rotating at a predetermined rotation speed causes the turning roller 15 to rotate in the direction A in the drawing. Next, when the sheet 7 is turned over, the turning arm 12 is turned in the direction B in the figure by energizing the solenoid 13 for a certain period as shown in the operation diagram of FIG. 2, and the turning roller 15 contacts the sheet 7. . As a result, the uppermost sheet 7a is separated in the rotation direction of the turning roller 15. At this time, the sheet 7a
As shown in the figure, the space between the turning roller 15 and the clamp portion 8 is separated in the direction C away from the superposed sheet 7.

Next, as shown in FIG. 3, the solenoid 13 is de-energized after a certain period of time, the rotating arm 12 is returned in the B'direction, and the turning roller 7 is moved upward from the position of the sheet 7 portion where it is overlapped. Moving. However, the turning roller 15 continues to rotate in the A direction, and the uppermost sheet 7a is
Due to the bending characteristic of the sheet 7a itself, the sheet 7a is kept in contact with the turning roller 7, so that the sheet 7 is continuously fed in the direction C when the sheet is separated as shown in the drawing.

After this, the end portion 7aa of the uppermost sheet 7a is
The sheet 7a is turned over as shown by the alternate long and short dash line in FIG. It should be noted that by setting the rotation speed of the turning roller 15 to be somewhat fast, the end portion 7aa of the uppermost sheet 7a can be blown in the C direction by the turning roller 15. As described above, each time the seat 7 is turned over, the seat 7 can be turned over sequentially by simply energizing the solenoid 13 for a predetermined period.

Next, the sheet polymer turning device is
When applied to a printing machine, it can be used as a slip sheet device. The slip sheet device will be described below.
The same parts as those in the above embodiment are designated by the same reference numerals. As shown in FIG. 4, the interleaving paper device 30 includes the turning device 1.
It has the same configuration as the above, and is installed on the discharge table 21 of the printing machine 20. A positioning groove 21a is formed on the discharge table 21, and the projection 2a at the bottom of the base 2 is formed in this groove 21a.
The entire positioning can be performed by fitting the.

From the printing machine 20, a paper discharge signal is output after printing each printing paper P to be printed sequentially. Therefore, the control means provided in the interleaving paper device causes the solenoid 13 to be operated every time the paper ejection signal is received.
By energizing, the sheet 7 can be turned over every time the printing paper P is discharged. As a result, after the printing paper P is discharged onto the already-turned sheet 7a,
The next sheet 7b is newly turned over and placed on this printing paper P.

By the above-mentioned operation, it is possible to automatically perform the interleaving of the printing papers P that are sequentially discharged for each printing, and prevent the set-off between the printing papers P. After the interleaving paper, the printing paper P can be taken out only by removing the clamp portion 8 from the base 2 and separating the sheet 7.

In the above embodiment, the configuration in which only the energization period of the solenoid 13 is controlled has been described.
9 may be configured to control the operation in the same manner. In this case, the motor 19 may be operated in synchronization with the solenoid 13 only for a period required for turning the seat 7. Similarly, the rotational speed of the motor 19 may be variably controlled (including variable speed during one operation) in order to change the turning speed.

[0025]

According to the sheet polymer turning device of the present invention, the superposed sheet is sandwiched by the clamp portion in a spread form, and the sheet is provided with a turning roller near the bending portion of the sheet polymer by the moving means. Since it has a simple structure in which it is moved and sequentially turned by rotating the turning roller, only one sheet can be reliably separated from the superposed sheets. Further, since the sheet being separated is in contact with the turning roller due to the rigidity of the sheet itself, the sheet can be surely turned only by rotating the turning roller.

[Brief description of drawings]

FIG. 1 is a side view showing a sheet polymer turning device.

FIG. 2 is an operation diagram showing a separated state of the device.

FIG. 3 is an operation diagram showing a turning state of the device.

FIG. 4 is a side view showing a slip sheet device of the printing machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Turning device, 2 ... Base, 3 ... Sheet holding body, 4 ... Separation feeding part, 7 ... Sheet, 8 ... Clamping part, 12 ... Rotating arm, 13 ... Solenoid, 15 ... Turning roller, 19 ...
motor.

Claims (1)

[Claims] 1. A clamp part (8) for holding one side of the sheets so that the plurality of sheets (7) can be opened, and a separation feed part (4) for sequentially turning the sheets of the clamp part. The separation feeding section is provided in the vicinity of the clamp section, and includes a turning roller (15) that rotates in the sheet turning direction,
A moving means (13) for moving the turning roller with respect to the surface of the sheet, and at the position where the turning roller comes into contact with the sheet, it serves as a separating means for turning the sheet by the clamp portion, and the turning roller is the sheet. A sheet polymer turning device characterized in that it is configured as a feeding means for turning over the sheet depending on the rigidity of the sheet in a state away from the sheet polymer.