JP2006248704A - Control device for paper feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To extend a range of paper feeding operation time controllable to set a feeding operation time to a predetermined time, and to avoid a temporary stop regardless of the length of the feeding operation time. <P>SOLUTION: This control device for a paper feeding device is constituted to accelerate the speed of a lateral carrier roller in a predetermined first accelerating pattern simultaneously with the start of feeding a sheet from a state of rotating the lateral carrier roller at a predetermined initial speed beforehand to be ≤1/3 of a final control speed corresponding to the speed of a following conveying line. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a plurality of paper feeders arranged side by side in a collating machine or the like for focusing a group of sheets such as newspaper advertisements, in particular, a range in which variations in paper feeding time can be absorbed and the leading edges of the sheets can be aligned. The present invention relates to an improvement of a control device and a control method of a paper feeding device with an enlarged view.

(Japanese Patent Laid-Open No. H09-208071) (Japanese Patent Laid-Open No. 2004-001930) (Japanese Unexamined Patent Application Publication No. 2004-189343)

For example, as disclosed in the above-mentioned Patent Document 2, the time required for transporting a sheet from the start of a sheet feeding operation to a connection point with a vertical transport roll that is the next transport path without stopping the horizontal transport roll (hereinafter referred to as this required time). A control device for a sheet feeding device has been invented, in which the time is referred to as “feed operation time”) and the final speed is controlled to a predetermined speed, thereby reducing variations in the leading edge of the sheet in the converging unit.

Furthermore, as shown in Patent Document 3, an improved technique is proposed that uses the horizontal conveyance roll pause operation only when the paper feed operation time is extremely short in order to widen the range of correction of paper feed operation time variation. Has been.

Details will be given in the above-mentioned patent document, but an outline of a control device for a conventional sheet feeding device will be briefly described below with reference to FIGS.

FIG. 6 is a conceptual diagram for explaining an outline of the configuration of a control device 100 of a conventional paper feeding device, and FIG. 7 is an explanatory diagram showing an outline of the configuration of a collating machine equipped with a plurality of control devices 100 of the paper feeding device. It is.

In FIG. 6, 28 is a paper feed roll, which is attached to a paper feed roll shaft 26 via a one-way clutch 27, and the paper feed roll shaft 26 is an output shaft of the planetary gear 24 attached to the paper feed motor 23. And a coupling (not shown). On the other hand, 18 is an auxiliary conveyance roll, which is attached to the auxiliary conveyance roll shaft 16 via a one-way clutch 17. The auxiliary transport roll shaft 16 is connected to the paper feed roll shaft via a timing pulley and a timing belt (not shown), and in conjunction with the drive of the paper feed motor 23, the paper feed roll 28 and the auxiliary transport roll. 18 rotate in only one direction at the same time. Reference numeral 38 denotes a lateral transport roll, which is attached to a lateral transport roll drive shaft 36. The lateral transport roll shaft 36 is coupled to an output shaft of the planetary gear 34 attached to the lateral transport motor 33 (not shown). ) And the horizontal conveyance roll 38 rotates in conjunction with the driving of the horizontal conveyance motor 33. A lateral conveyance sensor 40 is provided in the vicinity of the lateral conveyance roll 38 and detects the presence or absence of a sheet at this position. Further, a vertical conveyance roll 48 as a next conveyance path is provided downstream of the horizontal conveyance roll 38 in a state where the vertical conveyance roll shaft 26 is attached, and is driven by a separately provided motor 49.

In the conventional paper feeding device, the shaft for driving the paper feed roll 28 and the shaft for driving the lateral transport roll 38 are driven by motors controlled by independent control circuits, respectively, and the feed motor 23 is activated. Stop, control speed and acceleration.

In the control device of the paper feeding device in the above-mentioned Patent Document 2, the horizontal conveyance roll 38 (motor) is set to a stand-by state, ie, the steady speed of the vertical conveyance roll, that is, the final speed “V2” of the horizontal conveyance roll 38 approximately 1 / The motor rotates in advance at a fixed speed of 2 speed “V1” (intermediate speed) and stands by. After a set time of the timer from the index signal, the paper feed roll 28 (paper feed motor) rotates to start the paper feed operation, and feeds the sheet to the lateral transport roll 38.

When the sheet reaches the lateral conveyance sensor 40, the output of the lateral conveyance sensor 40 is turned ON, and the sheet feeding roll 28 stops in conjunction with this output, and the sheet is rotated at "V1" (intermediate speed). It is continuously conveyed by the roll 38.

On the other hand, the start command signal of the paper feed roll 28 and the ON output of the lateral conveyance sensor 40 are input to the time capture circuit, and the paper feed from the start command signal of the paper feed roll 28 to the output of the ON signal of the lateral conveyance sensor 40 is performed. The operation time is measured, and the lateral conveying roll 38 is accelerated toward the final speed “V2” after a predetermined time corresponding to the measured time. When the final speed “V2” is reached, the final speed is maintained and the sheet S is moved to the next. It is transported to a connection point with the vertical transport roll 48 which is a transport path.

The control device 100 of the paper feeding device in Patent Document 2 measures the variation in the paper feeding operation time, calculates the difference from the standard value as a correction value, controls the acceleration timing of the horizontal transport roll 38, and feeds the paper. Although the transmission operation time is to be controlled to be constant, details of this control method are given in the publication.

In the control device of the paper feeding device in Patent Document 3, the speed of the horizontal conveyance motor 33 from the start command signal of the paper feeding roll 28 to the output of the ON signal of the horizontal conveyance sensor 40 is not a fixed speed but a paper feeding operation. By changing it at the same time as the start of printing, it is possible to deal widely with variations in paper feed operation time.

If the sheet feeding operation time is shorter than the predetermined time, the sheet is temporarily stopped on the lateral conveyance sensor 40 in the vicinity of the lateral conveyance roll 38, and after adjusting the time, the sheet is moved to the position where the vertical conveyance roll 48 is joined. By using the two-stage feeding method in combination, it is possible to more widely cope with variations in the paper feeding operation time. The details of this control method are given in the same publication.

Note that the configuration of a circuit used in the control device 100 of the conventional sheet feeding device and the details of the configuration other than the transport system are left to the description in Patent Document 1.

Now, as shown in FIG. 7, when considering a collating machine having a plurality of paper feeding devices F1, F2,... Fn, each paper feeding device F1, F2,. The collation processing main control unit for controlling the entire collating machine is connected to each of the paper feeding devices F1, F2,... Fn by serial communication. Basic data such as the timing of starting the paper feeding operation depending on the location of the paper feeding devices F1, F2,.

This basic data is received from the collating process main control unit through serial communication from the start of the collating operation until the speed of the vertical conveying roll 48, the folding flapper 5, etc. is stabilized. The data other than the collating processing speed is sent to the paper feed unit control device, but it is also possible to place the data on the memory of the unit control device of each paper feed device F1, F2,. is there.

The problems to be solved by the conventional sheet feeding device as described above are that the improved technique of Patent Document 2 has a narrow sheet feeding operation time range in which the feeding operation time can be controlled to a predetermined time, When extreme slip occurs, the sheet tip cannot be aligned,

In the improved technique of Patent Document 3 for expanding the range that can cope with the variation in the paper feed operation time, when the paper feed operation time is short, it is forced to pause, and further improvement is required.

For this reason, in the paper feeder in Patent Document 3, since the outer rotor type DC brushless motor having a large rotor inertia is used as the lateral conveyor motor, the lateral conveyor roll speed VM and VM during the sheet feeding operation are used. There was a point that the acceleration when accelerating to the final speed could not be increased.

The relationship between the generated torque of the motor and the acceleration performance is expressed by (Equation 1) and widely known. However, as can be seen from (Equation 1), the generated torque T _M and the load torque T _L of the motor are the same. If, and motor inertia _{J M,} is large motor converted load inertia _{J LM,} acceleration (angular acceleration) is small. That is, sufficient acceleration cannot be achieved in a short time.
(Formula 1)

If the outer rotor type DC brushless motor, larger rotor inertia, as a result since the J _M increases, which is disadvantageous in terms of acceleration. In addition, since the structure is suitable for high-speed rotation, in order to increase the speed of the horizontal transport roll 38 to the final speed that is consistent with the vertical transport roll 49, it is attached between the horizontal transport motor 33 and the horizontal transport roll shaft 36. It is necessary to reduce the reduction gear ratio of the planetary gear 34. The motor-converted load inertia J _{LM in} (Expression 1) is reduced to 1 / reduction ratio ² with respect to the load inertia J _L connected to the motor output shaft (J _LM = J _L /
The reduction ratio ² ) is also disadvantageous in terms of acceleration in terms of this reduction ratio.

The second reason is that the speed control is performed by using the pulse signal of the Hall IC which is the rotor position detector of the lateral conveyance motor 33 as the rotation speed feedback signal, and the speed resolution per one rotation of the rotor is low. There is a limit to speed controllability and speed response.

For the above-described reason, the range in which the acceleration pattern of the lateral conveyance motor 33 can be changed within a predetermined time is limited, and when the paper feeding operation time is short, the temporary stop is used together. there were.

During a temporary stop, the stop position under the horizontal transport roll varies slightly each time due to differences in paper quality, suction pressure, brake application, etc., and the variation in the leading edge of the sheet is larger than when continuously fed. Become.

When the motor is restarted after being temporarily stopped, the starting current of the motor flows, so the power consumption increases.

The present invention solves the above-mentioned problems, and is fed from a plurality of paper feeding devices by controlling the feeding operation to a predetermined time corresponding to a wide range of paper feeding operation time without using a temporary stop. It is an object of the present invention to provide a control device and a control method for a sheet feeding device in which the leading edge of a sheet can be matched at a converging unit of a collator.

In order to solve the above-described problem, the present invention provides a control device for a sheet feeding device according to claim 1, wherein the sheet feeding device is mounted on a collating machine or the like for collecting a plurality of newspaper advertisement sheets. Sheet feeding timing is controlled by the respective arrangement locations, a housing separate from the collator main body, a paper feed tray linked to the housing, and a downstream end of the paper feed tray A paper feed roll that is rotatably supported so as to communicate with the edge, a paper handling mechanism for separating sheets stacked and fed on the paper supply tray, and the paper separation mechanism separated by the paper delivery mechanism A lateral transport roll for transporting sheets, a paper feed motor for driving the paper feed roll / paper handling mechanism / horizontal transport roll, a lateral transport motor, and control means for each motor are integrally held in the casing to form a unit. Control device for each of the motors Has a control circuit capable of separately controlling the sheet feeding motor and the lateral conveyance motor, and a lateral conveyance sensor for detecting the arrival of the sheet at the lateral conveyance roll, and the control circuit outputs an external signal. In the control device of the sheet feeding device that can control the start and stop of each motor and the speed and acceleration, the lateral transport rolls are finally controlled in advance according to the speed of the next transport path. From the state where the sheet is rotated at a predetermined initial speed that is 1/3 or less of the speed, the speed of the lateral transport roll is accelerated with a predetermined first acceleration pattern simultaneously with the start of the sheet feeding operation. When the sheet feeding operation time from the start of the sheet feeding operation until the sheet reaches the lateral conveyance sensor is equal to or longer than a predetermined time, the acceleration in the first acceleration pattern is accelerated to the sheet conveyance speed of the next conveyance path. Reaching speed that can maintain consistency with If the paper feed operation time is within the predetermined time, the first acceleration pattern is stopped and the speed at that time is fixed for a certain time corresponding to the paper feed operation time. Even if the paper feeding operation time is extremely short, the horizontal transport roll is accelerated by accelerating to a speed at which alignment with the sheet transport speed of the next transport path can be maintained with a separately set second acceleration pattern. Control of a sheet feeding device having a control function that feeds a sheet to a predetermined position (joining point) of the next transport path without stopping and at a predetermined time and at a predetermined speed The configuration of the device,

The sheet feeding device control device according to claim 2 is mounted on a collating machine or the like for bundling a plurality of sheets for newspaper advertisement, and the sheet feeding timing for bundling the sheets depends on each arrangement location. Each controlled, a housing, a paper feed tray linked to the housing, a paper feed roll rotatably supported so as to communicate with the downstream edge of the paper feed tray, and the paper feed A paper-making mechanism for separating sheets stacked and fed on a tray, a horizontal conveyance roll for conveying the sheets separated by the paper-making mechanism, and the paper feed roll, paper-making mechanism, and horizontal conveyance The control device of each motor of the paper feed device provided with a paper feed motor and a lateral transport motor for driving the roll and the control means of each motor can control the paper feed motor and the lateral transport motor separately. Control circuit and the side of the sheet And a lateral conveyance sensor for detecting the arrival at the feed roll, and the control circuit obtains an external signal to control the start and stop of each motor and the speed and acceleration. In the control device of the apparatus, in response to the speed of the next transport path, the horizontal transport roll is previously rotated at a predetermined initial speed so that it becomes 1/3 or less of the final control speed. Simultaneously with the start of the operation, the speed of the horizontal conveyance roll is accelerated with a predetermined first acceleration pattern, and the sheet feeding operation time from the start of the operation until the sheet reaches the horizontal conveyance sensor is a predetermined time or more. In this case, the acceleration in the first acceleration pattern is continued until reaching the speed at which the alignment with the sheet conveyance speed of the next conveyance path can be maintained, and then the speed is maintained, and the paper feeding operation time is within a predetermined time. In case, the first acceleration pattern After stopping and maintaining the current speed for a certain time corresponding to the paper feeding operation time, the second acceleration pattern set separately accelerates to a speed that can maintain the consistency with the sheet conveyance speed of the next conveyance path. Thus, even when the paper feeding operation time is extremely short, the sheet is not stopped at a predetermined position (joining point) on the next conveying path without temporarily stopping the horizontal conveying roll, and for a predetermined time and a predetermined speed. A control device for a sheet feeding device characterized by having a control function for feeding in

According to a third aspect of the present invention, there is provided a sheet feeding device control method using the sheet feeding device control apparatus according to the first or second aspect. After the sheet is conveyed, the horizontal conveyance roll speed when reaching the predetermined position is maintained until the sheet runs out from the horizontal conveyance sensor, and after the sheet is discharged from the horizontal conveyance sensor, the next sheet feeding operation is performed. A control function for quickly decelerating with a third acceleration pattern at a predetermined initial speed for provision is provided.

By configuring in this way, the intermediate speed variable range of the horizontal conveyance roll during the paper feeding operation is widened, so that even if the paper feeding operation time is extremely short due to the occurrence of double feeding, the horizontal conveyance roll is temporarily stopped. In addition, the range in which the leading edges of the sheets can be aligned can be expanded by absorbing the variation in the sheet feeding time. That is, the accuracy of sheet collation can be improved,

Even in an early paper feeding operation cycle, the speed of the horizontal transport roll can be maintained at a predetermined initial speed before the next paper feeding operation, and the feeding operation time can be kept constant continuously. In other words, it is possible to improve the sheet collating accuracy by aligning the sheet tips,

Even in the paper feeding device that is integrally held in the collator case, even if the paper feeding operation time is extremely short due to the occurrence of double feeding, etc., by expanding the intermediate speed variable range of the horizontal transport roll during paper feeding operation Further, it is possible to expand the range in which the sheet leading edge can be aligned by absorbing the variation in the sheet feeding time without temporarily stopping the horizontal conveyance roll. That is, the accuracy of sheet collation can be improved.

Embodiments of the present invention will be described below with reference to the drawings.

First, the structure of the paper feeding device will be described. FIG. 1 is a side view of a unit-type paper feeding device used in the present invention, and FIG. 2 is a plan view. The parts that are the same as those in FIG. 6 described above are given the same reference numerals and will not be described in detail.

11-L and 11-R are side plates (housings) independent of the case of the collator, and the paper feed tray T is attached to the side plates via posts 14 and 14 attached so as to protrude inward. Installed in a removable state.

11-L is provided with a planetary gear 24, a paper feed motor 23, a planetary gear 34, a lateral transport motor 33, and a paper feed unit control device 80 (hereinafter simply referred to as “control device”). A coupling 25 and a coupling 35 are respectively attached to the output shaft 34, and are connected to one end of the paper feed roll shaft 26 and the lateral transport roll shaft 36a.

A bracket 20 is attached to the paper feed roll shaft 26 so as to be swingable in the direction perpendicular to the sheet about the paper feed roll shaft, and the auxiliary transport roll shaft 16 is rotatably supported by the bracket 20. . In addition, a timing pulley 21 a attached to the paper feed roll shaft 26 and a timing pulley 21 b attached to the auxiliary paper feed roll shaft are connected by a timing belt 22. The paper roll 28 and the auxiliary transport roll 18 are configured to rotate in only one direction at the same time.

A gear 39a (not shown) is disposed at one end of the horizontal conveyance roll shaft 36a so as to mesh with a gear 39b of the same specification that is opposed to the upper side. By this power transmission, the lateral conveyance motor 33 is driven. In conjunction with this, the horizontal conveying rolls 38, 38 opposed to each other in the vertical direction rotate. Further, a lateral conveyance sensor 40 is arranged slightly downstream in the sheet traveling direction from the contact position of the lateral conveyance rolls 38, 38, and the presence / absence of a sheet at this position is detected.

The left and right side plates 11 -L and 11 -R are connected via a U-shaped table frame 10, and the upper surface of the table frame 10 detects the presence or absence of a sheet from the tray T slightly from the paper feed roll 26. For this purpose, the sheet is detected by the sheet presence / absence detection sensor 41, the contact between the paper plate 102 and the paper feed roll 26, and the conveyance guide plate 12 provided with holes so that the lateral conveyance rolls 38 and 38 can contact each other. It has been broken. Further, the side plates 11-L and 11-R are provided with grooves for fitting with guide rails (not shown) provided on the casing frame of the collating machine main body, and the sheet feeding unit resin cover 13-L, 13-R is attached.

The structure described above is almost the same as that of a conventional paper feeding device. However, in the paper feeding device of the present invention, an inner rotor type DC braless motor is used as the lateral conveyance motor 33. Accordingly, utilizing the fact that the inner rotor type DC motor is structurally suitable for high-speed rotation, the maximum rotation speed at the motor output shaft is increased, and the reduction ratio of the planetary gear 34 is reduced to 1 /. A large one from 3.5 to 1 / 5.5 is used.

And the use of inner rotor type DC brushless motor in the horizontal conveyance motor 33, the use of the planetary gears 34 of the high reduction ratio, and the motor inertia J _M of the equation (1), reducing the motor converted load inertia J _LM As a result, the acceleration in the first acceleration pattern of the horizontal conveyance roll during the paper feeding operation and the second acceleration pattern that accelerates to the final speed can be made larger than that in the conventional paper feeding device. The method of increasing the acceleration is not limited to the use of the inner rotor type DC brushless motor, but may be a method of using a large motor with high output.

In addition, by attaching a 300PPR encoder 32 to the rear of the output shaft of the horizontal conveyance motor and performing speed control using this output signal as a rotational speed feedback signal, good speed control performance and high speed response can be obtained over a wide range from low speed. I was able to.

Next, an outline of the configuration of the control device 80 of the paper feeding device of the present invention will be described with reference to FIG. The control device 80 includes a CPU 86 that performs calculation and command, a memory 84 that stores information necessary for the calculation and command, a timer 85 that measures time and adjusts time, and a paper feed motor driver 81 that drives the paper feed motor 23. A horizontal conveyance motor driver 82 for driving the horizontal conveyance motor 33 and a port 83 are provided. The port 83 controls the entire collating process, and is arranged in the collating machine main body. The collating process main control unit 90, the paper feed motor 23, the lateral conveyance motor 33, the encoder 32, the lateral conveyance sensor 40, and the sheet detection. Information is input and output between the sensor 41 and the CPU.

Hereinafter, regarding the operation of the control device 80 during the feeding operation, various parameters necessary for the collating processing such as the collating processing speed, the feeding timing determined by the location of the paper feeding device, the number of fed paper, etc. will be described. The operation of the CPU 86 is performed under the condition that the alignment processing main control unit 90 has already performed the control device 80 and the horizontal conveyance roll 38 is already rotating at the initial speed Vm _{(0) of} the first acceleration pattern. The description will be made with reference to FIGS.

When an index signal serving as a feed start command is input in step 400, the paper feed timing timer of the timer 85 is started. In step 401, the value of the paper feed timing timer is determined according to the location of each paper feed device. Wait until the set value is reached. When the paper feed timing is reached, in step 402, it is checked whether or not the paper feed operation conditions are satisfied (there is a sheet on the upstream side of the paper feed roll, no error such as a sheet misalignment, the scheduled feed number has not been completed, etc.) If not, the horizontal conveyance roll 38 is stopped at step 404.

If the paper feed operation condition is satisfied, the paper feed operation is started. In the paper feed operation, a paper feed operation time measurement timer for measuring the paper feed operation time is started in step 403, and then in step 405, the paper feed roll 28 is moved to a speed Vs (0.9 × VF / 2). The sheet S is transported toward the lateral transport roll 38 by controlling the rotation at. In this embodiment, for simplicity of control, and to be launched in a predetermined linear acceleration to the speed of the horizontal conveyor rolls 38 without synchronizing the speed of the sheet feeding roller 28 from 0 to V _S. This is because, in addition to simplification of control, the paper feed time is shortened as much as possible to reduce the possibility of exceeding the maximum value of the range corresponding to the paper feed time variation. With regard to this asynchronization, when the paper feed time is short, the paper feed roll 28 does not reach a sufficient speed due to the load and inertia, so that an extreme mismatch with the horizontal transport roll 38 does not actually occur and there is no problem. . Conversely, when the paper feed time is long, the speed of the horizontal conveyance roll 38 is faster, but the sheet is not damaged by the action of the one-way clutch 27 attached to the paper feed roll 28. Since it is pulled, there is no problem. Of course, it is possible to change the speed Vs of the paper feed roll 28 so as to be synchronized with the speed of the horizontal transport roll 38.

On the other hand, in accordance with the start of the paper feeding operation, in step 406, the lateral conveyance roll 38 is accelerated with the first acceleration pattern Vm _(Tx) . This acceleration is continued at every timer setting period of the acceleration variable timer until the lateral conveyance sensor 40 is turned on at step 407 or the speed of the lateral conveyance roll 38 reaches the final speed VF at step 408. A method for determining Vm _(Tx) will be described later.

When the sheet S reaches the lateral conveyance sensor 40 and the lateral conveyance sensor 40 is turned on in step 407, the sheet feeding operation time measurement timer is stopped in step 409, and the sheet feeding operation time Tx is measured. By applying a short brake to the paper feed motor 23, the paper feed roll is braked and the paper feed operation is terminated. At the same time, the horizontal conveying operation is started.

In the lateral transport operation, first, in step 411, the current speed maintenance time Tm for maintaining the current speed Vm _(Tx) of the lateral transport roll 38 is a value obtained from the paper feed operation time measured by the paper feed operation measurement time timer. Set to At the same time, a speed maintenance time timer is started. In step 412, if that value for speed maintenance time timer has reached the speed maintenance time Tm is confirmed, then to accelerate the transverse transport roll in the second acceleration pattern alpha ₂ at step 413. alpha ₂ in a predetermined linear acceleration determined in an acceleration range of the transverse transport motor 34 continues to accelerate in the alpha ₂ at step 414 to the speed of the horizontal conveyor rolls 38 reaches the VF of the final speed. A method for determining the speed maintenance time Tm of the lateral transport roll 38 will be described later.

In the state where the speed of the horizontal transport roll 38 has reached VF, when the sheet S reaches the coupling point with the vertical transport roll 48, the VF is set so that the speed consistency with the vertical transport roll 48 can be maintained. The sheet S is smoothly transferred to the vertical conveying roll 48 and further conveyed downstream. When the trailing edge of the sheet S is transported downstream from the lateral transport sensor position 40 with the speed VF maintained, the lateral transport sensor 40 is turned off, that is, from the lateral transport roll 38 in step 415. It is detected that the sheet S is completely lost. (Corresponding to claim 3)

Then, in step 416, deceleration control is performed with the third acceleration pattern α ₃ so as to reach the initial speed Vm ₍₀₎ of the lateral transport roll 38 in a short time while applying a short brake to the lateral transport motor 34. Do. Although the short brake is used in the present invention, the energy in the reverse direction may be applied to the lateral conveyance motor 34 for the purpose of further reducing the time. (Corresponding to claim 3)

If it is determined in step 417 that the speed of the horizontal transport roll 38 has reached the initial speed Vm ₍₀₎ of the first acceleration pattern, the process returns to step 400 while maintaining Vm ₍₀₎ , and the next feeding Prepare for paper movement. The above is a series of operations, but this is repeated for the required number of sheets.

Now, how to determine Vm _(Tx) and the lateral conveyance roll 38 speed maintaining time Tm will be described with reference to FIG.

In the present invention, in order to facilitate the calculation formula, the sheet moving section of the distance LC from the horizontal transport sensor 40 (horizontal transport roll 38) to the coupling point of the vertical transport roll 48 is defined as the intermediate speed Vm _(Tx) constant section Lm. It was composed of two sections of a predetermined acceleration alpha ₂ linear acceleration zone La. That is, (Expression 2a) and (Expression 2b) are obtained.
Lc = Lm + La ------------ (Formula 2a)
Lm = Lc-La ------------ (Formula 2b)

Further, it the movement time of each interval, the horizontal conveyance sensor-linkage point moving time Tc, the intermediate speed _{Vm (Tx)} constant speed travel time Tm, when the acceleration alpha ₂ travel time Ta and (Equation 3).
Tc = Tm + Ta ------------ (Formula 3)

Now, since the speed in the Lm section is constant at the intermediate speed Vm _(Tx) , the Vm _(Tx) constant speed moving time Tm is (Expression 4).
Tm = Lm / Vm _(Tx) --------------- (Formula 4)

Since α ₂ is linear acceleration, the acceleration α ₂ moving time Ta is expressed by using the final speed VF and the intermediate speed Vm _(Tx) (Equation 5), and the sheet moving distance La during acceleration is (Equation 6).
Ta = (VF−Vm _(Tx) ) / α ₂ --------------- (Formula 5)
---------- (Formula 6)

Since the object of the invention is to control the feeding operation time Ty to a predetermined time, according to the variation in the paper feeding operation time Tx, the time of the movement time Tc between the lateral conveyance sensor and the coupling point is
The feeding operation time Ty may be adjusted to be constant. That is, control may be performed so that (Equation 7) becomes constant.
------------------ (Formula 7)

Substituting (Equation 2) to (Equation 6) into (Equation 7) and solving for Vm _(Tx) and Tm such that the feed operation time Ty is constant, respectively, (Equation 8) (Equation 9) It becomes.
------------------ (Formula 8)

------------------ (Formula 9)

Above, first, the time elapsed from the sheet feed start (depending on the paper feed operation time) T _X, slide into changing the speed of the horizontal conveyor rolls 38 in the intermediate speed Vm calculated from (Equation 8) _(Tx). (Acceleration is performed in accordance with the first acceleration pattern.) Next, when the sheet reaches the lateral conveyance sensor 40, acceleration in the first acceleration pattern is stopped, and the velocity Vm _(Tx) at that time is expressed by (Equation 9). after maintaining for the time Tm determined by the horizontal conveyor rolls 38 at a predetermined second acceleration pattern acceleration alpha ₂ accelerates until it reaches the final speed VF. Upon reaching VF, maintains the VF, waiting for the top horizontal conveyance sensor 40 of the sheet is eliminated, and finally in the transverse transport rolls third acceleration pattern acceleration alpha _3, the intermediate speed initial velocity Vm By decelerating to ₍₀₎ and preparing for the next feeding operation, even when the paper feeding operation time is extremely short, the sheet is connected to the next conveyance path without temporarily stopping the horizontal conveyance roll. Without stopping, and can be fed at a predetermined time and at a predetermined speed.

In the present invention, the first acceleration of the lateral transport roll 38 speed Vm _(Tx) obtained from (Equation 8) when Tx is changed at intervals of 0.5 ms (0.5 ms, 1 ms, 1.5 ms...) The intermediate speed maintenance time Tm obtained from the pattern and (Equation 9) is previously tabulated and stored in a memory, and the speed of the horizontal transport roll 38 is accelerated by referring to the table every 0.5 ms of the timer setting period of the acceleration variable timer. , Tm is referred to the table according to the paper feeding operation time. Of course, it is also possible to calculate the lateral transport roll 38 speed Vm _(Tx) and the intermediate speed maintaining time Tm from (Equation 8) and (Equation 9) at any time using a CPU having processing capability.

Finally, a case where the sheet feeding operation time is “short”, “medium”, and “long” will be described with reference to specific examples of a collator equipped with the sheet feeding device of the present invention.

In this sheet feeding device, the distance LC from the horizontal conveyance sensor 40 (horizontal conveyance roll 38) to the connection point of the vertical conveyance roll 48 is 116 mm, the sheet feeding roll diameter φ50 mm, the horizontal conveyance roll diameter φ40 mm, the sheet feeding motor and the horizontal conveyance motor. When the reduction gear ratio of the planetary gear is 5.5: 1 and the collation processing speed is 120 collation / min (collation processing cycle Ts = 500 ms), the vertical conveyance is started. The feeding operation time Ty to the coupling point with the roll is controlled to 238.53 ms, the acceleration α ₂ of the second acceleration pattern is controlled to 13327.6 mm / s ² , and the final speed VF is controlled to 1428.24 mm / s. Further, the horizontal conveyance roll 38 is controlled to rotate at an intermediate speed initial speed Vm ₍₀₎ = 278.34 mm / s (lateral conveyance motor rotational speed = 730.97 r / min) when Tx = 0 in (Equation 8). In preparation for the start of the feeding operation.

First, a case where the intermediate paper feeding operation time Tx = 80 ms will be described. The state of the speed change of the horizontal conveyance roll 38 at this time is shown by a solid line in FIG.

The speed of the lateral transport roll 38 is accelerated by referring to the first acceleration pattern table as 279.26 mm / s → 280.18 mm / s → 281.11 mm / s every 0.5 ms after the feeding operation is started. I will let you. At the time of Tx = 80 ms, the horizontal conveyance roll speed is accelerated to 548.61 mm / s. Here, when the lateral conveyance sensor 40 is turned on, the acceleration is stopped and the current speed is maintained for the intermediate speed maintaining time Tm = 92.53 ms when Tx = 80 ms, and then the acceleration α ₂ = ₂ of the second acceleration pattern Accelerate at 133327.6 mm / s ² until final velocity VF = 1428.24 mm / s. The time Ta required for this acceleration is 66.00 ms from (Equation 5), and the feeding operation time from the start of the sheet feeding operation until the sheet reaches the joining point: Ty = Tx + Tm + Ta = 80 + 92.53 +66, and control is possible at a desired 238.53 ms.

Thereafter, the sheet is continuously conveyed at the final speed VF until the sheet is discharged from the lateral conveyance sensor 40. The maximum value Td _(max) of the continuous conveyance time is a maximum of a B4 size sheet (364 mm (vertical)). A lateral distance of × 257 mm (horizontal) is assumed. Now, since VF is 1428.24 mm / s, Td _(max) at this time is 179.94 ms. Here, since the collation processing cycle Ts is 500 ms, Ts−Ty−Td _(max) is the maximum time allowed as the deceleration time Te. In the present invention, the deceleration acceleration α ₃ from VF to Vm ₍₀₎ is 24179.69 mm / s ² linear acceleration. As a result, the deceleration time Te = 47.56 ms, and the intermediate speed initial speed Vm ₍₀₎ is reached 33.97 ms before the start of the next paper feed operation to prepare for the next paper feed operation.

Next, a case where the paper feed operation time Tx = 157.31 ms, which is the longest controllable range under this condition, will be described. The state of the horizontal conveyance roll speed change at this time is shown by a solid line and a broken line in FIG.

The above-described acceleration stopped halfway at Tx = 80 ms is continued until the same as the final speed VF according to the first acceleration pattern. When the lateral conveyance sensor 40 is turned ON at the time of Tx = 157.31 ms, the acceleration section in the second acceleration pattern becomes unnecessary, and the sheet is conveyed while maintaining the final speed VF = 1428.24 mm / s. In this case, Tc = Lc / VF = 81.22 ms. As a result, the feeding operation time Ty = Tx + Tm + Ta = 157.31 + 81.22 + 0, which can also be controlled at a desired 238.53 ms. The subsequent operation is the same as that when Tx = 80 ms.

Finally, a case where the paper feed operation time Tx = 0 ms when the paper feed operation time is the shortest due to double feeding or the like will be described. At this time, the state of the speed change of the horizontal conveyance roll 38 is shown by a solid line in FIG.

When Tx = 0, the intermediate speed initial speed Vm ₍₀₎ is not accelerated from 278.34 mm / s, and the initial speed is maintained for the intermediate speed maintaining time Tm = 152.25 ms when Tx = 0. After that, acceleration is performed at the acceleration α ₂ = 133327.6 mm / s ^{2 of} the second acceleration pattern until the final velocity VF = 1428.24 mm / s. The acceleration time Ta is 86.28 ms from (Equation 5), and the feeding operation time from the start of the sheet feeding operation until the sheet reaches the joining point: Ty = Tx + Tm + Ta = 0 + 152.25 + 86 .28, and can be controlled at the desired 238.53 ms. The subsequent operation is the same as that when Tx = 80 ms.

As described above, without stopping temporarily, which is performed when the paper feeding operation time is short in the conventional paper feeding device, it is possible to cope with a wide variation range of the paper feeding operation time without stopping: Tx of 0 to 157.31 ms. I understand that.

At this time, the speed of the horizontal conveyance roll 38 is the maximum, and 278.34 mm / s to 1428.24 mm / s (horizontal conveyance motor rotational speed conversion 730.97 r / s) in only 157.31 ms after the start of paper feeding. min.-3750.76 r / min) and 5.13 times as much. This change in the lateral conveyance roll speed is a condition in which the final speed VF is changed in proportion to the collation processing speed, the feeding operation time Ty is changed in inverse proportion to the collation processing speed, and α ₂ is constant. Below, the slowest collation processing rate is 70 collations / minute, and it is 3.3 times, 252.78-833.14 mm / s during 269.68 ms. In the case of the fastest collation processing speed of 130 collations / minute, the change is 6.66 times as 232.15 to 1547.26 mm / s in 145.21 ms.

As described above, in the control device of the sheet feeding device according to the present invention, even when the sheet feeding time is short, the feeding operation time Ty is controlled to be constant without any temporary stop, and at the converging unit of the collating machine. Realizes sheet edge alignment.

Although the control control device for the unitized paper feeding device has been described above, the present invention is not limited to the above-described embodiment, and does not have a frame independent of the housing of the collator, It goes without saying that the present invention can also be applied to a paper feed device that is an integrated type paper feed device.

  The sheet feeding device control device according to the present invention absorbs a wide range of feeding time in a wide range, particularly as a plurality of sheet feeding devices arranged side by side in a collating machine for collecting a group of sheets such as newspaper advertisements. This makes it possible to align the sheet tips, and can be widely used to improve the operating rate.

It is a side view which shows the structure of the paper feeder of this invention. It is a top view which shows the structure of the paper feeder of this invention. FIG. 3 is a block diagram of a control device of the paper feeding device of the present invention and a connection diagram with an external device. 6 is a flowchart for explaining the operation of the control device of the paper feeding device of the present invention. FIG. 4 is a speed change diagram of a horizontal conveyance roll for specifically explaining the operation of the control device of the paper feeding device of the present invention. It is a conceptual diagram explaining the outline | summary of a structure of the control apparatus of the conventional paper feeder. It is explanatory drawing which shows the structure outline | summary of the collator equipped with the conventional control apparatus of the paper feeder.

Explanation of symbols

F1 to Fn Paper feeder 5 Folding flap 10 Table frame 11-L, 11-R Side plate (housing)
12 Transport guide plates 13-L, 13-R Paper feed unit resin cover 14, 14 Post 16 Auxiliary transport roll shaft 17 One-way clutch 18 Auxiliary transport roll 20 Brackets 21a, 21b Timing pulley 22 Timing belt 23 Paper feed motor 24 Planetary gear 25 Coupling 26 Paper feed roll shaft 27 One-way clutch 28 Paper feed roll 32 Encoder 33 Lateral transport motor 34 Planetary gear 35 Coupling 36 Horizontal transport roll shafts 38 and 38 Horizontal transport roll 39b Gear 40 Horizontal transport sensor 41 Sheet presence / absence detection sensor 48 Vertical Transport roll 49 Motor 80 Paper feed unit controller 81 Paper feed motor driver 82 Horizontal transport motor driver 83 Port 84 Memory 85 Timer 86 CPU
90 Collating main control unit 100 Collating machine S Sheet T Paper feed tray

Claims (3)

It is mounted on a collating machine or the like for bundling a plurality of sheets for newspaper advertisement, and the feeding timing of the sheet for bundling the sheets is controlled by the respective arrangement locations, and is different from the collating machine main body. A housing, a paper feed tray linked to the housing, a paper feed roll rotatably supported so as to communicate with the downstream edge of the paper feed tray, and a stack placed on the paper feed tray A paper-making mechanism for separating the sheets fed in this way, a horizontal conveyance roll for conveying the sheets separated by the paper-making mechanism, and for driving the paper feed roll / paper-making mechanism / horizontal conveyance roll The sheet feeding motor, the lateral conveyance motor, and the control unit of each motor are integrally held in the casing and unitized. The control device for each motor includes the sheet feeding motor and the lateral conveyance motor, respectively. A separately controllable control circuit; A lateral conveyance sensor that detects the arrival of the lateral conveyance roll, and the control circuit obtains an external signal to control the start and stop of each motor and the speed and acceleration. In the control device of the paper feeding device, the horizontal transport roll is previously rotated at a predetermined initial speed corresponding to the speed of the next transport path so as to be 1/3 or less of the final control speed. Simultaneously with the start of the sheet feeding operation, the speed of the lateral transport roll is accelerated with a predetermined first acceleration pattern, and the sheet is fed from the start of the sheet feeding operation until the sheet reaches the lateral transport sensor. When the operation time is equal to or longer than the predetermined time, the acceleration in the first acceleration pattern is continued until reaching the speed at which the alignment with the sheet conveyance speed of the next conveyance path can be maintained, and then the speed is maintained and the paper is fed. Operating time is within the specified time In this case, the first acceleration pattern is stopped, the speed at that time is maintained for a certain time corresponding to the paper feeding operation time, and then the sheet conveyance speed of the next conveyance path is set with the second acceleration pattern set separately. By accelerating to a speed that can maintain the alignment of the sheet, even when the paper feeding operation time is extremely short, the sheet is moved to a predetermined position (joining point) on the next conveyance path without temporarily stopping the horizontal conveyance roll. A control device for a sheet feeding device, comprising a control function of stopping and feeding at a predetermined speed for a predetermined time. It is mounted on a collating machine or the like for bundling a plurality of sheets for newspaper advertisement, and the feeding timing of the sheets for bundling the sheets is controlled by the respective arrangement locations. A paper feed tray that is linked and held, a paper feed roll that is rotatably supported so as to communicate with the downstream edge of the paper feed tray, and a sheet that is stacked and fed on the paper feed tray are separated. A paper transport mechanism for transporting the sheet, a horizontal transport roll that transports the sheets separated by the paper transport mechanism, a paper feed motor and a lateral transport motor for driving the paper feed roll, paper transport mechanism, and horizontal transport roll; A control circuit capable of separately controlling the sheet feeding motor and the lateral conveyance motor of the sheet feeding device provided with the control means for each motor, and a control circuit capable of separately controlling the sheet feeding motor and the lateral conveyance motor, respectively. Horizontal conveyance sensor that detects arrival The control circuit obtains an external signal to start / stop the motors and control the speed and acceleration. Correspondingly, from the state in which the horizontal conveyance roll is rotated at a predetermined initial speed so as to be 1/3 or less of the final control speed in advance, simultaneously with the start of the sheet feeding operation, When the sheet feeding operation time from the start of the sheet feeding operation until the sheet reaches the lateral conveyance sensor is equal to or longer than a predetermined time, the first acceleration is configured to accelerate the speed with a predetermined first acceleration pattern. After the acceleration in the pattern is continued until reaching the speed at which the alignment with the sheet conveyance speed of the next conveyance path can be maintained, the speed is maintained, and when the paper feeding operation time is within a predetermined time, the first acceleration pattern Stop and speed at that time Is maintained for a certain period of time corresponding to the sheet feeding operation time, and then accelerated with a separately set second acceleration pattern until a speed that can maintain consistency with the sheet conveyance speed of the next conveyance path is obtained. A control function that feeds a sheet to a predetermined position (joining point) of the next conveying path without stopping at a predetermined time and at a predetermined speed without temporarily stopping the lateral conveying roll A control device for the sheet feeding device. A function of maintaining the lateral conveyance roll speed when the sheet reaches the predetermined position after the sheet is conveyed to a predetermined position (joining point) in the next conveyance path after starting the paper feeding operation until the sheet disappears from the lateral conveyance sensor; 2. A control function of quickly decelerating to a predetermined initial speed with a third acceleration pattern for preparing for the next sheet feeding operation after the sheet is discharged from the lateral conveyance sensor. Or a control device for the sheet feeding device described in 2.