JP6160310B2 - Fan wind speed display device - Google Patents

Description

  The present invention relates to a technique for controlling a fan installed in a paper discharge device of a sheet-fed printing press.

  A paper discharge device in a sheet-fed printing press includes a paper discharge unit and a paper stacking unit. A paper discharge chain is stretched in the paper output section, and the paper transported by the gripper installed in the paper output chain is released from the gripper by hitting the paper release cam and loaded on the paper. It is configured to fall on the part. In order to control the movement of the paper during the fall, a fan is attached to the paper discharge unit, and the adjustment of the fan greatly affects the paper discharge. If the fan is not properly adjusted, the paper will be blown and dropped by the wind generated by the fan, causing rubbing with the printed matter that has already been discharged and piled up, generation of wrinkles on the discharged paper, and discharged printed matter. This causes a problem such as poor paper alignment.

  In order to make the sheet behavior in the paper discharge device of the printing press appropriate, we also propose a paper discharge device that can register and easily read out the optimum operating value of the fan, which is one of the behavior control means, for each operator. (For example, refer to Patent Document 1).

JP 2010-162793 A

  The technique shown in the above-mentioned Patent Document 1 is optimal, for example, it is possible to register and read out the optimum operation value for each operator, or to perform a simulation according to conditions using a preset program. The feature is that the setting is simplified when realizing the behavior of a simple sheet.

  However, the technique disclosed in Patent Document 1 is for the purpose of optimizing the set value to be performed in advance, and has a problem that it does not reflect the actual fan state after operation. There is also a problem that it cannot cope with a change in wind speed due to deterioration of the fan or abnormality of other parts of the apparatus.

  Therefore, an object of the present invention is to provide a fan wind speed display device capable of reliably capturing the change even when the wind speed of the fan has changed unexpectedly.

  In order to solve the above problems, a fan wind speed display device according to the present invention is a device for adjusting a setting value of a fan for controlling the behavior of paper in a paper discharge unit, in which paper is stacked in the paper discharge unit. A fan installed opposite to the paper stacking unit, a wind speed measuring unit installed on the leeward side of the fan and measuring the wind speed of the fan, a display unit displaying the wind speed value measured by the wind speed measuring unit, A fan wind speed display device comprising:

  In the fan wind speed display device of the present invention, wind speed measuring means for measuring the wind speed of the fan is installed on the leeward side of the fan installed in the paper discharge unit, and the wind speed value measured by the wind speed measuring means is displayed. As a result, even if the fan wind speed changes unexpectedly, it is possible to reliably detect the change.

  Further, the fan wind speed display device according to the present invention is configured to measure the current fan set value and the measured value when the wind speed value measured by the wind speed measuring unit exceeds a fluctuation allowable range set as a fluctuation allowable range. A correction setting value calculating means for calculating a correction setting value based on the wind speed value, and a fan control means for controlling the driving of the fan based on the calculated correction setting value. To do.

  The fan wind speed display device according to the present invention calculates a correction set value when the measured wind speed value exceeds a set allowable fluctuation range, and controls driving of the fan based on the calculated correction set value. Therefore, it is possible to set an appropriate wind speed corresponding to the actual state of the fan.

  Further, the fan wind speed display device according to the present invention provides a notification that the wind speed value measured by the wind speed measuring unit is abnormal by a predetermined method when the wind speed value exceeds a notification grace range set as a grace range for notification. It further has an abnormality notification means for performing the above.

  In the fan wind speed display device according to the present invention, when the measured wind speed value exceeds the set notification grace range, notification is made that an abnormality has occurred, so when a large change occurs in the fan state In addition, the operator can grasp immediately.

  According to the present invention, even if the fan wind speed changes unexpectedly, the change can be reliably captured.

It is a side view which shows the outline of the paper discharge part used as the application object of the fan wind speed display apparatus which concerns on one Embodiment of this invention. It is a figure which shows the installation position of the anemometer with respect to a fan. It is a functional block diagram of the fan wind speed display apparatus which concerns on one Embodiment of this invention. It is a flowchart which shows the processing operation of the fan wind speed display apparatus which concerns on one Embodiment of this invention.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
<1. Outline of paper discharge unit>
FIG. 1 is a side view schematically showing a paper discharge unit to which a fan wind speed display device according to an embodiment of the present invention is applied. In FIG. 1, 1 is a fan, 2 is a gripper, 3a and 3b are sprockets, 4 is a paper release cam, 5 is a paper discharge frame, 6 is a paper stacking unit, and 7 is a paper discharge chain. In FIG. 1, the arrows in the sprockets 3 a and 3 b indicate the rotation direction of each sprocket, and the right-pointing arrow on the paper discharge chain 7 indicates the moving direction of the paper discharge chain 7.

  The paper discharge frames 5 are provided in a pair of left and right so as to sandwich the entire paper discharge unit from the left and right sides with respect to the paper transport direction. In the side view of FIG. 1, only the paper discharge frame 5 on one side is shown. Show. In the paper discharge frame 5, a paper discharge chain 7 is stretched between the pair of sprockets 3a and 3b. The paper discharge chain 7 is actually provided with two left and right sides (the front side and the back side in FIG. 1) with respect to the paper conveyance direction, but FIG. 1 is a side view, Only the paper discharge chain 7 is shown, and the paper discharge chain 7 on the back side of the drawing is omitted. A plurality of claw hooks are suspended between the left and right paper discharge chains 7 at a constant interval, and a gripper 2 is installed on each claw hook. The gripper 2 is composed of a nail and a nail base and is installed on the nail plate, but since its configuration is known, the details are omitted.

  The position of the paper release cam 4 is movably installed by an actuator (not shown) so that the position at which the gripper 2 releases the paper can be changed. The actuator may not be provided, and the paper release cam 4 may be configured to be movable by other known means. The paper stacking unit 6 is installed below the paper release cam 4 in the vertical direction. Therefore, the sheet transported with the leading end held by the gripper 2 is configured so as to be released from the nail grip and dropped onto the sheet stacking unit 6 by hitting the paper release cam 4. The fan 1 blows air by rotation of the fan rotating unit 1a, and is attached to control the movement of the sheet when the sheet is dropped onto the sheet stacking unit 6. Specifically, it is installed above the paper stacking unit 6 in the vertical direction and at a position between the left and right paper discharge chains 7 so as to blow downward in the vertical direction. An appropriate number of fans 1 can be installed according to the blowing intensity, the area of the blowing surface, and the like. In the example of FIG. 1, a state in which five fans 1 are installed is shown.

<2. Installation of anemometer on fan>
FIG. 2 is a bottom view showing the installation position of the anemometer with respect to the fan. FIG. 2 shows a state viewed from below vertically, that is, a state viewed from the side of the sheet stacking unit 6 shown in FIG. In FIG. 2, 1a is a fan rotating unit that is actually rotationally driven by the driving unit and blows air, 1b is a fan outer frame for protecting the fan rotating unit 1a, and 20 is measuring the wind speed of the fan 1. An anemometer 100 for connecting to the anemometer 20 is a control unit that controls the fan 1 according to the output from the anemometer 20.

  The anemometer 20 is a wind speed measuring means for measuring the wind speed, and any of various known forms may be adopted as long as it can receive a wind and output a signal corresponding to the wind intensity. Can do. The anemometer 20 of the present embodiment includes a windmill and can output a signal having an intensity corresponding to the rotational speed of the windmill that has rotated by receiving wind from the fan 1. As shown in FIG. 2, the anemometer 20 is installed on the lower side of the fan 1 so that the rotation axis of the fan rotation unit 1 a and the rotation axis of the windmill of the anemometer 20 are parallel to each other. As a matter of course, it is installed in the direction of air blown by the fan 1, that is, on the leeward side. The installation method may be any method as long as it can be fixed at a predetermined position, but in the present embodiment, the holes provided in the fan outer frame 1b and the outer frame of the anemometer 20 respectively. Are installed by fixing them with bolts. As shown in FIG. 1, when five fans 1 are installed, an anemometer 20 is installed for each fan 1 in the manner shown in FIG.

<3. Configuration of Fan Wind Speed Display Device>
FIG. 3 is a functional block diagram showing the configuration of the fan wind speed display device according to the embodiment of the present invention. In FIG. 3, 1 is a fan, 20 is an anemometer, 30 is a wind speed value processing unit, 40 is a display unit, 50 is a correction set value calculation unit, 60 is a fan control unit, and 70 is an abnormality notification unit. The control unit 100 illustrated in FIG. 2 corresponds to the wind speed value processing unit 30, the correction set value calculation unit 50, and the fan control unit 60. FIG. 3 shows a state in which only one component 20 to 60 is provided for one fan, but in reality, one anemometer 20 is installed for each fan. One or a plurality of other components 30 to 60 are installed, and processing is performed by appropriately sharing them.

  The anemometer 20 includes an A / D converter, digitally converts the signal acquired in accordance with the rotation of the windmill as described above, and outputs the converted signal to the wind speed value processing unit 30 as a wind speed value indicating the wind intensity. The wind speed value processing unit 30 acquires the wind speed value from the anemometer 20 and causes the display unit 40 to display the wind speed value based on the acquired wind speed value. In addition, the wind speed value processing unit 30 compares the acquired wind speed value with a preset range, and outputs a signal indicating an abnormality to the abnormality notification unit 70 when a predetermined condition is satisfied. In addition, the wind speed value processing unit 30 compares the acquired wind speed value with a preset range, and when a predetermined condition is satisfied, a correction set value calculation command signal together with the wind speed value is calculated as a correction set value calculation unit. Output to 50.

  The display unit 40 displays the wind speed value acquired from the wind speed value processing unit 30, and is realized by a known display device such as a liquid crystal display. The correction setting value calculation unit 50 calculates a correction setting value for adjusting the output of the fan 1 in accordance with the wind speed value acquired from the wind speed value processing unit 30. The correction setting value calculation unit 50 holds the setting value of the fan 1 and calculates a new correction setting value based on this setting value and the acquired wind speed value.

  The fan control unit 60 sets the output of the fan 1 using the correction setting value received from the correction setting value calculation unit 50. The abnormality notification unit 70, when receiving a signal indicating an abnormality from the wind speed value processing unit 30, notifies the abnormality by a predetermined method, a speaker for notifying abnormality by sound, and notification of abnormality by light This is realized by a light emitting device or the like. The device serving as the abnormality notification unit 70 may also be used as the display unit 40 to blink the fact that there is an abnormality. In the case of notification by sound, it is preferable to make the sound feel urgent, such as a buzzer sound.

  The wind speed value processing unit 30, the correction set value calculation unit 50, and the fan control unit 60 are a part of the control unit 100 including a CPU (Central Processing Unit) and a RAM (Random Access Memory), and the CPU executes a predetermined program. It is realized by executing.

<4. Process Overview>
Next, the processing operation of the fan wind speed display device according to the present embodiment will be described. FIG. 4 is a flowchart showing the processing operation of the fan wind speed display device according to the present embodiment. The anemometer 20 periodically transmits the wind speed value obtained by the measurement to the wind speed value processing unit 30 at a predetermined timing. The flowchart of FIG. 4 shows processing for the wind speed value acquired from the anemometer 20 by the wind speed value processing unit 30. First, the wind speed value processing unit 30 acquires a wind speed value from the anemometer 20 (step S10).

  Subsequently, the wind speed value processing unit 30 determines whether or not the wind speed value acquired from the anemometer 20 exceeds a fluctuation allowable range that is a range in which fluctuation is allowed (step S20). As the fluctuation allowable range, an arbitrary value can be set as appropriate, but in the present embodiment, a range of 80% to 120% of the reference value is set. In step S20, when the wind speed value is outside the allowable fluctuation range, that is, when the wind speed value is less than 80% of the set value or the wind speed value exceeds 120% of the set value, the wind speed value processing unit. 30 outputs a signal indicating abnormality to the abnormality notification unit 70.

  When the abnormality notification unit 70 receives a signal indicating that there is an abnormality from the wind speed value processing unit 30, the abnormality notification unit 70 performs abnormality notification processing according to the characteristics of the abnormality notification unit 70 (step S30). For example, when the abnormality notification unit 70 is a member that emits sound such as a speaker, a warning sound such as a buzzer sound is emitted. When the abnormality notification unit 70 is a device that displays information, such as a liquid crystal display, the fact that there is an abnormality is displayed in a blinking manner. When displaying a warning, it is still effective to use a color that draws the attention of a person such as red. The abnormality notification unit 70 may perform abnormality notification by using either sound or display, but not both.

  On the other hand, in step S20, when the wind speed value is within the fluctuation allowable range, that is, within the range of 80% to 120%, the wind speed value processing unit 30 notifies the wind speed value acquired from the anemometer 20. It is determined whether or not a notification grace range that is a grace period is exceeded (step S40). As the notification postponement range, an arbitrary value can be set as appropriate similarly to the allowable variation range, but in the present embodiment, a range of 95% to 105% of the reference value is set. In step S40, when the wind speed value is outside the notification grace range, that is, when the wind speed value is less than 95% of the reference value, or the wind speed value exceeds 105% of the reference value, the wind speed value processing unit. 30 outputs a correction set value calculation command signal to the correction set value calculation unit 50.

  When the correction set value calculation unit 50 receives the command signal for calculating the correction set value from the wind speed value processing unit 30, the correction set value calculation unit 50 performs a correction set value calculation process for the wind speed value (step S50). Specifically, a new correction set value is calculated based on the ratio between the set value and the wind speed value. In the present embodiment, the correction set value calculation unit 50 performs the calculation according to the following [Formula 1].

[Formula 1]
H = F / V
V '= V / H

  In the above [Equation 1], F is the measured wind speed value, V is the current setting value of the fan 1, H is the ratio of the wind speed value F to the setting value V, and V 'is the correction setting value. As shown in [Formula 1], the correction set value V ′ is calculated by dividing the set value V by the ratio H obtained by dividing the wind speed value F by the set value V.

  When the correction set value is calculated, the fan control unit 60 controls the fan 1 (step S60). Specifically, the setting value of the fan 1 that is currently set is changed to be the correction setting value calculated by the correction setting value calculation unit 50. Thereby, the rotation speed of the fan 1 is changed so that the target wind speed at the time of initial setting is obtained.

  On the other hand, in step S40, when the wind speed value is within the notification grace range, that is, within the range of 95% to 105% of the reference value, the wind speed value processing unit 30 does nothing in particular. When the wind speed value is within the range of 95% to 105% of the set value, it is determined that the wind speed value is within the normal range, and the fan 1 is continuously driven without changing the initial set value.

  Further, the wind speed value acquired by the wind speed value processing unit 30 in step S10 is sequentially output to the display unit 40 by the wind speed value processing unit 30, and the display unit 40 displays the wind speed value acquired from the wind speed value processing unit 30. By displaying the actual wind speed value of the fan 1 on the display unit 40 in real time, the operator can know the actual wind speed value of the fan 1 at any time, which is useful for appropriately controlling the fan 1.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made. For example, in the above embodiment, the variation allowable range for performing the abnormality notification and the notification grace range for calculating the corrected output value are different from each other, and the variation allowable range includes the notification grace range. The relationship can be changed as appropriate. For example, the notification grace range may be set so as to include the fluctuation allowable range, the fluctuation allowable range and the upper limit or lower limit of the notification grace range may be set to match, or the fluctuation allowable range and the notification You may set so that a grace range may correspond completely.

DESCRIPTION OF SYMBOLS 1 ... Fan 1a ... Fan rotation part 1b ... Fan outer frame 2 ... Gripper 3a, 3b ... Sprocket 4 ... Paper release cam 5 ... Paper discharge frame 6 ... Paper Stacking unit 7 ... Discharge chain 10 ... Discharge unit 20 ... Anemometer 30 ... Wind speed value processing unit 40 ... Display unit 50 ... Correction set value calculation unit 60 ... Fan Control unit 70 ... Abnormality notification unit 100 ... Control unit

Claims (2)

A device for adjusting a setting value of a fan for controlling the behavior of paper in a paper discharge unit,
A fan installed opposite to the paper stacking unit on which the paper is stacked in the paper discharge unit;
Wind speed measuring means installed on the leeward side of the fan and measuring the wind speed of the fan;
An abnormality notification means for notifying that the wind speed value measured by the wind speed measurement means is abnormal when the wind speed value exceeds the first range;
When the wind speed value measured by the wind speed measuring means exceeds the second range that is included in the first range and is narrower than the first range, Correction set value calculating means for calculating a correction set value based on the measured wind speed value;
Fan control means for controlling driving of the fan based on the calculated correction setting value;
A fan wind speed control device comprising: The fan wind speed control device according to claim 1, further comprising display means for displaying a wind speed value measured by the wind speed measuring means .

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