JPH0244737B2 - INSATSUSHINOBUROTSUKINGUBOSHISOCHIOYOBIHOHO - Google Patents

Description

Detailed Description of the Invention The present invention separates printing paper or printed printing paper one by one, creates an air layer between the printing paper or each sheet of printing paper, and prevents the sheets from sticking together. The present invention relates to a so-called anti-blocking device and method.

When loading a new sheet of printing paper that has been opened into a printing machine, do not load a stack of paper that has just been opened, but be sure to shift each sheet to create a slight space layer between each sheet. Measures are taken to prevent sheets from being inserted.

Alternatively, similar measures are taken to prevent printed sheets from adhering to each other due to printing ink before passing the printed sheets to the next process.

Hitherto, most of the means for preventing blocking have been done manually, and no practical and effective automatic blocking preventing device or method has been developed.

The present invention has been made in view of the above points, and provides an extremely efficient anti-blocking device for laminated printing paper or printed laminated printing paper (hereinafter, both are simply referred to as printing paper), as well as a blocking prevention device for this device or a similar device. The object of the present invention is to provide a method for preventing blocking that can be used to prevent blocking on the entire surface of printing paper.

Hereinafter, each embodiment shown in the drawings will be described in detail. As shown in FIGS. 1 to 7 with some parts omitted, the printing paper anti-blocking device according to the present invention has a base 2 that slides along a guide portion 1 (FIG. 2) provided on a machine frame. A flexible sheet 3, such as a rubber sheet or a rubberized sheet 3, which is connected at one end to the sheet 3, and a support shaft described later which supports the sheet 3 and provides a bending surface to the sheet is a rotary roller that rotates freely or rotates simultaneously. 5, a support shaft 6 that supports the roller, a mold arm 7 whose one end is fixed to the support shaft and the other end is connected to the end of the sheet 3, and rotates with the rotation of the support shaft 6; A base moving means 8 for moving the base 2 along the guide section in synchronization, printing paper holding means 9 and 10 whose position is adjustable for pressing the printing paper P placed on the sheet 3, and rotation of the sheet 3 upward. It consists of one or two printed paper ironing rollers 11 provided in a direction parallel to the roller 5, a driving means 12 for the support shaft 6 of the rotary roller, and a driving means 13 for moving the ironing roller 11. ing.

The base moving means 8 shown in FIGS. 1, 4, 5, and 6 is provided on the support shaft 6 of the rotating roller 5, and includes a gear 14 that rotates with the rotation of the support shaft and a rack that meshes with the gear. It consists of a pinion gear 15, a rack 16 that meshes with the rack pinion gear 15 and converts the rotation of the gear 14 into horizontal movement, and a connecting member 17 that connects the rack and the base 2 and transmits the movement of the rack 16 to the base 2. In addition, gear 14
rotates with the rotation of the support shaft 6 which is rotated via the motor 24, clutch 25 and worm gear box 26.

FIG. 3 shows another embodiment of the base moving means 8, in which a motor 18 rotates in synchronization with the motor of the driving means 12 that rotates the support shaft 6 of the rotary roller 5, a transmission means 19 consisting of a clutch, gears, etc. 20
The driving means 29 is shown.

The moving speed and moving distance of the base 2 moved by the base moving means 8 match the moving speed and moving distance of the seat 3 that moves as the arm 7 rotates. If they do not match, there is a risk that the sheet 3 will become slack or that an excessive tensile force will be applied, resulting in damage to the device.

Next, the operation and anti-blocking effect of the device of the present invention will be explained based on FIGS. 1, 4, 5, and 6. Note that in the following explanation, the rotating roller 5 is not forcibly rotated by the support shaft 6;
An explanation will be given of a type that rotates freely and is rotated only by frictional resistance with the seat 3.

FIG. 4 shows that one end of the printing paper P placed on a straight sheet 3 is brought to the operating position by the second printing paper pressing means 10, and the pressing plate 23 driven by the air cylinder 22 is pressed against the sheet. 3 shows the state in which it is pressed and clamped. At this time, the other first
The printing paper holding means 9 is missed upward and is not operating. From this state, the motor 24 of the driving means 12 is rotated, and the speed is appropriately changed by the clutch 25 and the worm gear box 26, and the support shaft 6, which is disposed below the seat 3 and supports the rotating roller 5 shown by the broken line, is rotated.
Turn it 1/4 turn clockwise A. The support shaft 6 passes through the rotating roller 5 and protrudes from both sides of the rotating roller 5, and is fitted into the machine frame on both sides via metal or bearings. Such a support shaft 6
When the arm 7 is rotated, the arm 7 fixed to the support shaft 6 is also rotated 90 degrees in the clockwise direction A. This rotation of the arm 7 causes the connecting rod 27 of the arm 7 to
(FIG. 7), the bendable seat 3 is also displaced and moved as the arm 7 rotates. At this time, the second printing paper pressing means 10 is also rotated by a member (not shown) in synchronization with the rotation of the arm 7 while maintaining the clamping pressure. Furthermore, at this time, the bendable sheet 3 bends and moves while being guided by the circumferential surface of the rotating roller 5. When these series of operations are completed, the state shown in FIG. 5 is reached.

Note that while the support shaft 6 is rotated 1/4 and the sheet 3 and printing paper P are brought from the state shown in FIG. 4 to the state shown in FIG. 5, the sheet 3 changes as shown in FIGS. When the rotation center of the arm 7 coincides with the axis of the support shaft 6 or the center of the rotating roller 5, and when the radius of the rotating roller 5 is r, when the arm 7 is rotated 90 degrees, the sheet 3 is Move approximately 2πr/4=l to the right and downward on the drawing. More precisely, it is 2π(r+t/2)/4≒l ₂ . here t
is the thickness of sheet 3.

The movement of l or _l2 is transmitted to the base 2 by a gear 14, a rack and pinion gear 15, a rack 16, and a connecting member 17 provided on the support shaft 6. Note that if the diameter of the rotating roller 5 and the effective pitch diameter of the gear 14 are equal, only the members shown in FIG. It is necessary to provide appropriate compensation means.

In addition, if the rotation center of the arm 7 is different from the axis of the rotary roller 5, the calculation is performed separately, and the amount of movement of the rack 16 and the base 2 is calculated to match the amount of movement of the sheet 3.
It is necessary to provide and adjust compensation means as described above so as to give the same.

Looking at the state of the printing paper P in FIG. 5, there is a slope on the left end of the printing paper P over a width l ₃ due to the misalignment of the paper sheets. This slope is caused by the difference in the radius of curvature at the top and bottom of the printing paper, and l ₃ = l ₁ −
_l2 .

After the printing paper P is bent 90 degrees along the bendable sheet 3 as shown in FIG. 5, the other first printing paper holding means 9 is operated near the slope of the printing paper P to shift the printing paper P. Clamp it in the closed position.

Next, the support shaft 6 is rotated by the driving means 12 of the rotary roller support shaft 6 in the opposite direction (counterclockwise) to the rotation direction in the above step, and the sheet 3 and the printing paper P are returned to their original positions as shown in FIG. Return to the horizontal state (Figure 6). At this time, the base 2 and the base moving means 8
is returned to the position shown in FIG. 4 by the reverse operation of . However, the conditions of the printed paper P in FIG. 4 and the printed paper P in FIG. 6 are greatly different. In other words, each sheet of the printing paper P forms a bulge 28 that swells larger as the upper layer of the sheet increases.

The main purpose of the apparatus of the present invention is to form the bulge 28 on the paper sheet.

Next, two printing paper ironing rollers 11 arranged in parallel at appropriate intervals as shown in FIG. The printing paper ironing roller 11 is set by a driving means 13 consisting of a rail 32, a roller 11, a suspension member 31, a drive motor (not shown), etc., and is moved from side to side while maintaining its height, until the bulge 28 is set.
The position is generated over almost the entire area of the printing paper P. Through the above process, each sheet of the printing paper P is separated, which prevents blocking of the printing paper in subsequent printing operations or related operations, and prevents printing errors and breakdowns of various mechanical devices.
It can greatly contribute to improving work efficiency.

In order to further enhance the above-mentioned blocking prevention effect, compressed air can also be blown from the side of the bulge 28 toward the inside of the bulge 28, as shown in FIG. In that case, the air blowing nozzle should be moved left and right as the printing paper ironing roller 11 moves, and if the diameter of the nozzle is small, it is preferable to move the nozzle up and down.

Furthermore, the angle of rotation or rotation of the support shaft and arm can be further increased to increase the degree of deviation as appropriate.

Further, when only one printing paper ironing roller 11 is used, when changing the moving direction of the bulge 28, the ironing roller 11 is lifted upward and positioned on the opposite side of the bulge 28.

With the above-described apparatus, FIG. 1, FIG. 4, and FIG.
When the printing paper blocking prevention work is carried out through each of the steps shown in FIGS. 6 and 6, in some cases, a complete blocking prevention effect may not be obtained.
This is because the paper sheets do not shift in the portions clamped by the second printed paper holding means 10.

The method for preventing printing paper blocking shown below completely eliminates the above-mentioned drawbacks.

The printing paper blocking prevention method according to the present invention is as follows:
As shown in FIGS. 8 to 15, the process consists of the following steps (a) to (g).

(b) After clamping one end of the horizontally placed laminated printing paper by the second printing paper pressing means 10, the laminated printing paper is bent by rotating the second printing paper pressing means, and the laminated printing paper is A step of creating a misalignment between each sheet of printing paper on the other end side (FIGS. 8 and 9).

(b) A step of clamping the end portion of the opposite side of the clamp by the second printing paper pressing means 10 by the first printing paper pressing means 9 (FIG. 10).

(c) By returning the second printing paper holding means to its original position while being clamped by the first and second printing paper holding means 9 and 10, the bent laminated printing paper is returned to a flat state, and the laminated printing paper bulges 28. (Figure 11).

(d) Step of moving the bulge 28 from side to side while keeping both printing paper holding means clamped (FIG. 12).

(E) A step in which the bulge 28 is brought closer to the second printing paper pressing means side 10, and then the second printing paper pressing means 10 is released, and the laminated printing paper is shifted in a diamond shape (◇ shape) (Fig. 13) ).

(f) The first printing paper pressing means 9 is clamped and rotated with the second printing paper pressing means 10 released, and after bending the laminated printing paper on the second printing paper pressing means side, the leading end thereof A step of clamping the paper by the second printing paper holding means 10 (FIG. 14).

(g) Release the first printing paper holding means 9, return the laminated printing paper from the bent state to the horizontal position with the second printing paper holding means 10 clamping it, and place the laminated printing paper that has been completely anti-blocking on each sheet. The process of returning to the stacked state before starting the process (Figure 15).

Each of the above steps (a) to (g) can be performed using the apparatus according to the present invention, but is not limited to the apparatus according to the present invention, and may be performed by other similar methods capable of carrying out each of the above steps. This can also be achieved by a device.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted perspective view of the device of the present invention, Fig. 2 is a partial sectional view showing a base 2 that slides along a guide section 1 provided on the machine frame, and Fig. 3 is a base A side view schematically showing another embodiment of the moving means, FIGS. 4 to 6 are explanatory diagrams for explaining blocking prevention work by the device of the present invention, and FIG. 7 is a side view taken along the line - in FIG. The cross-sectional views and FIGS. 8 to 15 show process explanatory diagrams for explaining the method of the present invention. In the figure, 1 is a guide part, 2 is a base, 3 is a flexible sheet, 5 is a rotating roller, 6 is a support shaft, 7 is an arm, 8 is a base moving means, 9 and 10 are printing paper holding means, and 11 is a The rollers for ironing the printing paper are shown respectively.

Claims (1)

[Scope of Claims] 1. A flexible seat 3 whose one end is fixed to a base 2 that slides on a guide section 1 provided on the machine frame, and a flexible seat 3 that is provided at the other end of the seat 3 and supports the seat. an arm 7 whose one end is fixed to the support shaft 6 of the rotation roller 5 and whose other end is connected to the end of the sheet 3 opposite to the base 2; and the rotation of the support shaft 6. a base moving means 8 that moves the base 2 to follow the movement of the sheet 3 in synchronization with the movement of the sheet 3; and first and second printed paper pressing means 9 that press the laminated printed paper placed on the sheet 3. and 10, one or two printing paper ironing rollers 11 provided above the sheet 3 in a direction parallel to the rotating roller 5, a driving means 12 for the support shaft 6 of the rotating roller, and the printing paper ironing roller. 1. A device for preventing blocking of laminated printing paper, comprising: a drive means 13 for moving the paper 11; 2. The base moving means 8 is composed of a rack 16 that is provided on the support shaft 6 of the rotating roller 5 and is driven by a gear 14 that rotates with the rotation of the support shaft, and a connecting member 17 that connects the rack and the base 2. An anti-blocking device for laminated printing paper according to claim 1, characterized in that: 3 The base moving means 8 is the support shaft 6 of the rotating roller 5
The anti-blocking device for laminated printing paper according to claim 1, characterized in that it is a motorized drive means 29 that operates in synchronization with the drive means 12 of the invention. 4. The base moving means 8 has an adjustment mechanism so that the moving speed and moving distance of the sheet 3 that moves along the circumferential surface of the rotating roller 5 due to the rotation of the arm 7 are the same as the moving speed and moving distance of the base 2. An apparatus for preventing blocking of laminated printing paper according to claim 1, characterized in that: 5. A patent claim characterized in that the second printing paper presser 10 provided near the rotating roller 5 is rotated in the same direction in synchronization with the rotation of the arm 7, and the presser pressure is maintained constant. A device for preventing blocking of laminated printing paper according to item 1. 6. A method for preventing blocking of printing paper, characterized by comprising each of the following steps (a) to (g). (b) After clamping one end of the horizontally placed laminated printing paper by the second printing paper pressing means 10, the laminated printing paper is bent by rotating the second printing paper pressing means 10, and the laminated printing is performed. A process that creates a misalignment between each sheet of printing paper on the other end of the paper. (b) A step of clamping the end portion on the opposite side from the side clamped by the second printing paper pressing means 10 by the first printing paper pressing means 9. (c) By returning the second printing paper holding means 10 to its original position while being clamped by the first and second printing paper holding means 9 and 10, the bent laminated printing paper is returned to a flat state, and the laminated printing paper is swollen. Step of producing 28. (d) A process of moving the bulge 28 from side to side while keeping both printing paper holding means clamped. (e) A step of bringing the bulge 28 close to the second printing paper pressing means side 10, and then releasing the second printing paper pressing means 10 to make the laminated printing paper deviated in a diamond shape. (f) The first printing paper pressing means 9 is clamped, rotates with the second printing paper pressing means 10 released, and after bending the laminated printing paper on the second printing paper pressing means side, the second printing A step of clamping by paper holding means 10. (g) Release the first printing paper holding means 9, return the laminated printing paper from the bent state to the horizontal position with the second printing paper holding means 10 clamping it, and carry out each process of the laminated printing paper which has been subjected to anti-blocking treatment. The process of returning to the stacked state before starting.