JP4256760B2 - Sheet-fed printing machine paper discharge device - Google Patents

Description

  The present invention relates to a sheet discharge device for a sheet-fed printing press, and more particularly to a control technology for an actuator related to behavior control of a printed sheet such as a fan, a vacuum wheel, and a paper release cam.

The sheet discharge device of the sheet-fed printing press is equipped with a plurality of actuators such as a fan, a vacuum wheel, and a paper release cam. By adjusting the operation of these actuators, the behavior of the print sheet discharged from the printing device can be controlled. It is possible to control and align the printing sheets in an appropriate posture. The number of actuators that need to be adjusted is large. If each actuator is adjusted for each job, it takes time to obtain the optimum operating values for all actuators, and a lot of paper is lost. End up. Therefore, in the technique described in Patent Document 1, the target value used in the past job can be stored, and a plurality of fans can be arbitrarily grouped, and the target value is simultaneously assigned to the plurality of grouped fans. It can be set.
Japanese Patent No. 3281359

  However, in the technique described in Patent Document 1, once a target value is set, it can be used repeatedly in subsequent jobs. However, when setting a target value for the first time, an operator needs to adjust each actuator based on experience. There is. The behavior of the discharged print sheet changes depending on conditions such as the paper type and size of the print sheet, the pattern distribution, the line drawing rate, and the printing speed. Therefore, the target value must be set each time these conditions change. Don't be.

  The present invention was devised in view of such problems, and an object of the present invention is to provide a sheet discharge device for a sheet-fed printing machine that can easily adjust each actuator such as a fan to an appropriate operation value. To do.

  In order to achieve the above-described object, the sheet discharge device of the sheet-fed printing press according to the present invention includes an optimum operation value of each actuator and a factor of paper alignment for a plurality of actuators related to behavior control of a print sheet discharged from the printing device. The relationship with a plurality of conditions is stored in the storage means. When the value of each condition is input to the input means, the calculation means calculates the operation optimum value of each actuator according to the input value as a target value based on the relationship stored in the storage means, The result is displayed on the display means. According to this, the operator only needs to input conditions that cause paper alignment, and each actuator can be accurately and quickly adjusted to an appropriate operating value without relying on experience or intuition. As a result, it is possible to shorten the preparation time required for aligning the print sheets in the correct posture, and to reduce waste paper. Note that the paper alignment factors include the paper type and size of the printing sheet, the pattern distribution, the line drawing rate, and the printing speed. The actuator includes a fan, a vacuum wheel, a paper release cam, and the like. The fan has a rotation speed (wind speed), the vacuum wheel has a rotation speed and a front / rear position, and the paper release cam has a paper release position adjusted. A map may be used as a method for defining the relationship between the actuator's optimum operating value and multiple conditions that cause paper alignment, and the actuator's optimum operating value is expressed by a linear approximate expression with each condition as a variable. A linear model may be used.

  In the sheet discharge device of the sheet-fed printing press according to the present invention, the simulation unit simulates the behavior of the printed sheet when each actuator is operated with the operation target value calculated by the calculation unit. Then, the simulation result of the simulation means is displayed on the display means. According to this, the operator can grasp the behavior of the printing sheet in advance, and can obtain a hint for setting the target value when setting the target value of each actuator. Examples of the method of expressing the simulation result include numerical values, diagrams, tables, arrows, unevenness, shading, and the like, and may be expressed by any one of these, or may be expressed by a combination. Preferably, the simulated behavior of the print sheet is displayed superimposed on the print pattern of the print sheet. Thereby, it is possible to make it easier to grasp the behavior of the print sheet.

  The sheet discharge device for the sheet-fed printing press according to the present invention can adjust the operation target value of each actuator by the adjusting means. The simulating means can simulate the behavior of the print sheet when each actuator is operated with the adjusted operation target value, and can display the simulation result on the display means. When the operator confirms and finely adjusts the automatically set operation target value, the print sheets can be aligned in a more accurate posture. Further, since the fine adjustment result is simulated and displayed, the operator can easily predict how to align the paper.

The operation target value of each actuator is registered in the registration means. Further, the operation target value of each actuator adjusted by the adjusting means can be additionally registered in the registering means. Therefore, if the job is the same as a job executed in the past, each actuator can be quickly adjusted to an appropriate operation value by reading the operation target value from the registration means.
The registration means can group and register the operation target value of each actuator for each condition that causes paper alignment. In this case, the sheet discharge device of the sheet-fed printing press according to the present invention causes the paper alignment stored in the storage unit based on the operation target values grouped and registered in the registration unit by the learning unit. The relationship between the plurality of conditions and the optimum operation value of each actuator is corrected. When the relationship is represented by a linear model, each coefficient may be corrected. As described above, the learning content is fed back to the calculation for determining the optimum operation value of each actuator, so that the operation target value with higher accuracy can be calculated.

  In the sheet discharge device of the sheet-fed printing press according to the present invention, the front surface of the sheet discharge unit is formed by a transparent panel. And the operating device which operates each actuator is attached to the transparent panel. Thereby, the operator can adjust each actuator while observing the behavior of the print sheet, and the operability is greatly improved.

As described above in detail, according to the sheet discharge device of the sheet-fed printing press of the present invention, the operator only has to input the conditions that cause the paper alignment, and each actuator is appropriately set without relying on experience or intuition. It is possible to adjust accurately and quickly to a correct operating value. As a result, it is possible to shorten the preparation time required for aligning the print sheets in the correct posture, and to reduce waste paper.
In addition, by simulating the behavior of the printed sheet when each actuator is operated with the calculated operation target value and displaying the simulation result on the display means, the operator can grasp the behavior of the printed sheet in advance. Thus, it is possible to obtain a hint for setting a target value when setting a target value for each actuator.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1A and 1B are diagrams for explaining a sheet discharge device of a sheet-fed printing press according to an embodiment of the present invention. FIG. 1A is a configuration diagram thereof, and FIG. 1B is a block diagram thereof. As shown in FIG. 1A, the print sheet 7 is gripped and conveyed by the chain gripper 2 driven by the chain 4 and is conveyed from the printing unit 8 of the printing press to the paper discharge device 9. The paper discharge device 9 has a stocker 10 on which printing sheets 7 are stacked. A vacuum wheel 5 is installed in front of the stocker 10, and a plurality of fans 1-1 to 1-n are installed above the stocker 9. ing. Further, the sprocket of the chain 4 is provided with a paper release cam 3 for releasing the chain gripper 2 to release the paper. Is installed. The print sheet 7 conveyed by the chain gripper 2 is released from the chain gripper 2 by the paper release cam 3 by the stocker 10. At that time, the printing sheet 7 is decelerated by the vacuum wheel 5 and stopped by hitting the paper pad 6, and further, the wind is blown from above by the fans 1-1 to 1-n to be pressed onto the stocker 10, and the paper Aligned to the position of the abutment 6.

The behavior of the print sheet 7 when it is discharged from the paper discharge device 9 is as follows: the rotational speed and direction of the fans 1-1 to 1-n, the rotational speed and front and rear positions of the vacuum wheel 5, and the paper release of the paper release cam 3. Varies with position. In other words, the behavior of the print sheet 7 can be controlled by actively controlling the actuators 1-1 to 1-n, 3, and 5 using these as control items.
Therefore, the paper discharge device 9 includes a control device 20 as shown in FIG. 1B in order to adjust the operation values of the actuators 1-1 to 1-n, 3, and 5. Focusing on the function of the control device 20, the input unit (input unit) 21, the target value calculation unit (calculation unit) 22, the arithmetic expression storage unit (storage unit) 23, the simulation unit (simulation unit) 24, the target A value registration unit (registration unit) 25, a target value adjustment unit (adjustment unit) 26, an arithmetic expression learning unit (learning unit) 27, a sheet behavior registration unit 28, and an output unit 29 are included.

  The control device 20 has a function of calculating the operation target values of the actuators 1-1 to 1-n, 3, and 5 and displaying them on the display device (display means) 30. The operation target value is calculated by the target value calculation unit 22, and the outline thereof is represented by the conceptual diagram of FIG. 2. Hereinafter, the function of the target value calculation unit 22 will be described with reference to FIG. The target value calculation unit 22 has a classification table for each condition that causes paper alignment. The value of each condition that becomes a paper alignment factor is input to the input unit 21 online as part of production management information. Here, the paper type / sheet size, paper size, pattern information, and printing speed of the print sheet are assumed as the conditions that cause the paper alignment, and the pattern information includes, for example, a stocker 10 as shown in FIG. When the positions of the fans 1-1 to 1-n correspond to the positions of the print sheets 7 above, the range of the print sheet 7 with respect to the area occupied by the fans 1-1 to 1-n and the respective fans 1-1. The image area drawing ratio or ink amount information for the area of 1 to n is included. The target value calculation unit 22 has a paper type / sheet size table, a paper size table, a pattern information table, and a printing speed table so as to correspond to each condition. In these tables, the condition values are classified into a plurality of characteristics. For example, in the paper size table, Xmm to Ymm are classified as a characteristic A, and Y + 1 mm to Zmm are classified as a characteristic B, and a representative value is set for each characteristic.

  When the value of each condition that causes a paper alignment factor is input to the input unit 21, the target value calculation unit 22 automatically selects a corresponding characteristic from each classification table, and reads a representative value of the selected characteristic from the classification table. And a value is substituted into the arithmetic expression memorize | stored in the arithmetic expression memory | storage part 23, and the operation target value of each actuator 1-1 to 1-n, 3,5 is calculated. The arithmetic expression is an expression that prescribes the relationship between each condition causing the paper alignment and the optimum operation value of the actuator, and the rotational speed and wind direction of each of the fans 1-1 to 1-n, the rotational speed of the vacuum wheel 5, and It is prepared for each control item such as the front / rear position and the paper release position of the paper release cam 3. For fans 1-1 to 1-n, a control item may be set for each fan, or a control item may be set with a plurality of fans as one group. The above arithmetic expression can be expressed by a linear model as shown in the following expression (1). Here, the rotational speed of the fan is taken as an example, but other control items such as the number of revolutions of the vacuum wheel and the paper release cam position can be expressed by the same formula. Further, k1 to k6 in the formula (1) are coefficients, and are different values for each control item.

Fan rotation speed = k1 × paper size (width) + k2 × paper size (top and bottom) + k3 × paper thickness + k4 × printing speed + k5 × ink weight + k6 (1)
The target value calculation unit 22 displays the calculated operation target values on the display device 30. There is no limitation in the display format of each operation target value in the display device 30, and various display formats such as a numerical value, a bar graph, a pie chart, a scatter diagram, and a three-dimensional solid graph can be adopted. Several display formats may be combined and displayed. Further, when a set button (not shown) is pressed, each operation target value calculated by the target value calculation unit 22 is transmitted from the output unit 29 to each actuator 1-1 to 1-n, 3, and 5, and each actuator 1 The operation values of −1 to 1-n, 3, and 5 are set to operation target values, respectively.

  Thus, the operator only has to confirm the operation target values of the displayed actuators 1-1 to 1-n, 3, and 5, and without depending on experience or intuition, the actuators 1-1 to 1-n, 3 and 5 can be adjusted accurately and promptly to appropriate operating values. As a result, the preparation time required for the operator to align the printing sheet 7 in the correct posture is shortened, and the occurrence of lost paper is also reduced.

  The control device 20 also has a function of simulating the behavior of the print sheet 7 when the actuators 1-1 to 1-n, 3, and 5 are operated with the operation target values calculated by the target value calculation unit 22. ing. The simulation of the behavior of the print sheet 7 is performed by the simulation unit 24, and the simulation unit 24 executes a preset simulation program from the input conditions and the operation target values of the actuators 1, 3, and 5. It is used to simulate how one print sheet falls onto the stocker 10 and how it stacks. The simulation result is displayed on the display device 30 by the expression method illustrated in FIG. 4A is a numerical representation of which area of the print sheet 7 sinks or floats. FIG. 4B shows a three-dimensional representation of the posture of the print sheet 7. In FIG. 4C, the area where the print sheet 7 sinks and the area where it floats are represented by shading. In any expression method, the printed pattern is superimposed and displayed so that the operator can easily grasp the behavior of the print sheet 7 sensuously. The printed pattern can be displayed based on the pattern information input to the input unit 21.

  In this way, the behavior of the print sheet 7 is simulated, and the result is displayed, so that the operator can grasp the behavior of the print sheet in advance, and the actuators 1-1 to 1-n, 3, by themselves. A target value setting hint for setting a target value of 5 can be obtained. As a method of expressing the simulation result, in addition to the method shown in FIG. 4, a method of expressing a table, arrows, unevenness, or the like may be used, or a plurality of methods of expression may be combined.

The operation target values of the actuators 1-1 to 1-n, 3, and 5 calculated by the target value calculation unit 22 can be arbitrarily adjusted by the operator. The adjustment of the operation target value can be performed by the target value adjustment unit 26 of the control device 20, and the adjustment result is displayed on the display device 30. The target value adjustment unit 26 has input means such as buttons, a keyboard, a mouse, a touch panel, a sheet key, a transparent panel, or voice, and an operator operates these input means while looking at the screen of the display device 30. Thus, the operation target value can be arbitrarily adjusted. The quality of the adjustment result of the operation target value can be confirmed by simulating the behavior of the print sheet 7 using the operation target value adjusted by the simulation unit 24. As described above, the operator can confirm and finely adjust the automatically set operation target value, whereby the print sheets can be aligned in a more accurate posture. Further, since the fine adjustment result is simulated and displayed on the display device 30, the operator can easily predict how to align the paper. The control device 20 includes the actuators 1-1 to 1-n, 3 and 5. It also has a function of registering the operation target value. The operation target value calculated by the target value calculation unit 22 and the operation target value adjusted by the target value adjustment unit 26 can be registered in the target value registration unit 25. When the operator confirms the simulation result displayed on the display device 30 and determines that there is no problem in the simulation result, the operator can register the operation target value in the target value registration unit 25, thereby For this job, it is only necessary to read out the corresponding operation target value from the target value registration unit 25. As a result, it becomes possible to quickly align the sheets in an appropriate posture from the start of printing, and the occurrence of lost paper can be greatly reduced. In the target value registration unit 25, as shown in FIG. 5, the operation target values of the actuators 1-1 to 1-n, 3, and 5 are classified and registered for each condition and characteristic that cause paper alignment. It is supposed to be. The significance of such classification and registration will be described later.

  In addition to registering the operation target value in the target value registration unit 25, the behavior of the print sheet 7 simulated by the simulation unit 24, that is, the dropping posture of the print sheet 7 may be registered in the sheet behavior registration unit 28. it can. In the sheet behavior registration unit 28, as shown in FIG. 6, a plurality of dropping postures of the printing sheet 7 that are considered to be “ideal paper falling” are registered as defaults, and are simulated by the simulation unit 24. The result is additionally registered in “Ideal paper fall”. When an arbitrary drop posture of the print sheet 7 is selected from the sheet behavior registration unit 28, the simulation unit 24 selects the drop posture of the selected print sheet 7 and the input value of each condition that causes the paper alignment. Therefore, the operation target values of the actuators 1-1 to 1-n, 3, and 5 are calculated backward and displayed on the display device 30. As a result, the operator can also drop the print sheet 7 in the form that he considers ideal, regardless of the conditions that cause paper alignment. Whether the operation target value is determined based on the falling posture of the print sheet 7 as described above or whether the operation target value is determined based on the preset operation optimum value calculation formula as described above is arbitrary by the operator. Can be selected.

  As a further function of the control device 20, there is an arithmetic expression learning function that defines the relationship between each condition that causes paper alignment and the optimum operation value of the actuator, which are stored in the arithmetic expression storage unit 23. The arithmetic expression learning unit 27 learns the arithmetic expression. As described above, in the target value registration unit 25, the operation target values of the actuators 1-1 to 1-n, 3, and 5 are classified and registered for each condition and characteristic that cause paper alignment. The arithmetic expression learning unit 27 corrects the arithmetic expression based on the variation of the operation target value when the number of registered operation target values under the same characteristics and the same characteristics reaches a predetermined number. For example, when the arithmetic expression is a linear model as described above, the coefficients k1 to k6 are corrected. As described above, the learning content is fed back to the arithmetic expression for determining the optimum operation value of each of the actuators 1-1 to 1-n, 3, and 5, so that the operation target value can be calculated with higher accuracy. .

  The above are the functional characteristics of the paper discharge device 9, but the paper discharge device 9 is also characterized in its structure. FIG. 7 is a view of the paper discharge device 9 as viewed from the front (in the direction of arrow A in FIG. 1 (a)). A transparent panel 40 that can be seen is attached. The transparent panel 40 is attached to the left and right frames 41 and 42 of the paper discharge unit 9, and the operation device 45 is attached on the transparent panel 40. The operation device 45 corresponds to the input interface of the control device 20 described above, and the operator operates the operation device 45 to determine the operation target values of the actuators 1-1 to 1-n, 3, and 5, An operation target value can be set to the actuators 1-1 to 1-n, 3, and 5. As described above, the front surface of the paper discharge device 9 is the transparent panel 40, and the operation device 45 is attached to the transparent panel 40, so that the operator observes the behavior of the print sheet 7 and the actuators 1-1 to 1-n, 3. , 5 can be adjusted, and the operability is greatly improved. The operating device 45 may be fixed to the transparent panel 40 or may be detachable from the transparent panel 40. Examples of the operation method of the operating device 45 include a button, a rotary knob, a keyboard, a mouse, a touch panel, a sheet key, and the like that can be operated by direct touching by an operator.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to such Embodiment, It can implement in various deformation | transformation in the range which does not deviate from the meaning of this invention. For example, the relationship between each condition causing the paper alignment and the optimum operation value of the actuator may be defined using a function of a nonlinear model instead of the linear model as in the embodiment. Furthermore, you may prescribe | regulate using a map instead of a function.

In addition to the conditions listed in the embodiment, temperature and humidity may be used as conditions that cause paper alignment. The temperature information and the humidity information can be obtained by attaching a thermometer or a hygrometer to the paper discharge device.
7 is the most preferable example, but it is needless to say that the operation device can be installed by other methods. That is, you may install an operating device in the normal panel which is not transparent. The operation device may be installed at any location that is easy for the operator to operate, such as the side surface and the top surface, in addition to the front surface of the paper discharge device. In addition to attaching the operation device to the paper discharge device panel, the operation device is completely fixed to the paper discharge device panel, and the operation device is detachable from the paper discharge device panel to transmit and receive signals to and from the paper discharge unit by wire or wirelessly. You may do it. Further, instead of attaching the operating device to the paper discharge device, the operating device may be installed on a color viewing table (color tone control device) connected to the printing press by communication.

BRIEF DESCRIPTION OF THE DRAWINGS It is for demonstrating the paper discharge apparatus of the sheet-fed printing press concerning one Embodiment of this invention, (a) is the block diagram, (b) is the block diagram. It is a conceptual diagram for demonstrating the calculation function of the operation target value which a control apparatus has. It is a conceptual diagram for demonstrating the pattern information which is one of the conditions used as a paper alignment factor. It is a figure which shows the expression method of a simulation result. It is a conceptual diagram for demonstrating the registration content of a target value registration part. It is a conceptual diagram for demonstrating the registration content of a sheet | seat behavior registration part. It is the figure which looked at the paper discharge apparatus of Fig.1 (a) from the arrow A direction.

Explanation of symbols

1-1 to 1-n Fan 2 Chain gripper 3 Paper releasing cam 4 Chain 5 Vacuum wheel 6 Paper pad 7 Print sheet 8 Printing unit 9 Paper discharge device 10 Stocker 20 Control device 21 Input unit (input means)
22 Target value calculation unit (calculation means)
23 arithmetic expression storage unit (storage means)
24 Simulating section (simulating means)
25 Target value registration unit (registration means)
26 Target value adjustment unit (adjustment means)
27 arithmetic expression learning unit (learning means)
28 Sheet Behavior Registration Unit 29 Output Unit 30 Display Device (Display Unit)
40 Transparent panel 45 Operating device

Claims (6)

A plurality of actuators for controlling the behavior of the printed sheet discharged from the printing apparatus;
Storage means for storing a relationship between a plurality of conditions that cause paper alignment and the optimum operation value of each actuator;
An input means for inputting the values of the above conditions;
Based on the relationship stored in the storage means, calculating means for calculating the optimum operation value of each actuator according to the input value as a target value;
Display means for displaying a calculation result of the calculation means ;
Simulating means for simulating the behavior of the printed sheet when each of the actuators is operated with the operation target value calculated by the calculating means,
A sheet discharge device for a sheet-fed printing machine, wherein a simulation result of the simulating means is displayed on the display means . Said simulating means is superimposed on the print pattern on the printed sheet behavior of the printing sheet simulated and displaying on the display means, sheet discharging device according to claim 1, wherein a sheet-fed printing press. Adjusting means for adjusting the operation target value of each of the actuators;
The simulation means is configured to simulate the behavior of the print sheet when each actuator is operated with the operation target value adjusted by the adjustment means, and to display the simulation result on the display means. The sheet discharge device for a sheet-fed printing press according to claim 1 or 2 , characterized in that Registration means for registering the operation target value of each actuator,
4. The sheet discharge device for a sheet-fed printing press according to claim 3 , wherein the target operation values of the actuators adjusted by the adjusting means can be additionally registered in the registering means. The registration means is configured to group and register the operation target values of the actuators for each condition that causes paper alignment, and to register the operation target values grouped and registered in the registration means. 5. A sheet according to claim 4 , further comprising learning means for correcting a relationship between a plurality of conditions that cause paper alignment stored in the storage means and the optimum operation values of the actuators. Paper discharge device for printing press. The sheet according to any one of claims 1 to 5 , wherein a front surface of the paper discharge unit is formed of a transparent panel, and an operating device for operating the actuator is attached to the transparent panel. Paper discharge device for printing press.

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