JP5720300B2 - Paper sheet processing equipment - Google Patents

Description

  The present invention relates to a paper sheet processing apparatus having a reciprocating conveyance unit such as a fork for conveying paper sheets such as banknotes, and a position sensor used for movement control of the reciprocating conveyance unit, and in particular, an attachment position of the position sensor. The present invention relates to a paper sheet processing apparatus capable of stopping a reciprocating conveyance unit at an appropriate position regardless of accuracy.

  This type of paper sheet processing apparatus, for example, as disclosed in Patent Document 1 or the like, reciprocates to transport paper sheets between a storage unit that stores paper sheets provided in a safe and the inside and outside of the storage unit. A reciprocating conveyance unit such as a moving pusher or fork is provided.

JP 2007-308233 A

  As such a paper sheet processing apparatus, for example, a paper sheet configured to reciprocate by power received from a motor via a rotationally driven motor and a crank mechanism that converts the rotational motion of the motor into reciprocating motion. A reciprocating conveyance unit for conveying the motor, a rotation amount detecting unit using a rotary encoder or the like for detecting the rotation amount of the motor, and a reference position sensor for detecting that the reciprocating conveyance unit has passed a predetermined reference detection position The both ends of the reciprocating direction in the reciprocating range of movement are set as target stop positions, the reciprocating conveyance unit is moved through driving of the motor, and the rotation amount detected by the rotation amount detecting unit is measured. The reciprocation is started by controlling the rotation of the motor so that the measured rotation amount becomes a preset target value, starting from the time when the reciprocating conveyance unit is detected by the reference position sensor. It is conceivable to configure such a part performs movement control for moving the target stop position.

  In this case, it is necessary to set the target value in advance before the movement control, but in order to cope with a manual setting error of the target value or that an appropriate value to be set as the target value changes depending on the environment or aging. When the setting position sensor for detecting that the reciprocating conveyance unit has passed is arranged so that the detection position coincides with the target stop position, the time point detected by the setting position sensor from the time point detected by the reference position sensor It is conceivable that the rotation amount detected by the rotation amount detection unit is measured until the target value can be automatically set with the measured rotation amount as the target value.

  However, the target value automatically set with the detection position of the setting position sensor and the target stop position shifted is not an appropriate value for stopping at the target stop position, and appropriate movement control can be performed. Therefore, it is necessary to attach the setting position sensor strictly so that the detection position of the setting position sensor coincides with the target stop position, and accuracy is required for the attachment of the setting position sensor, which makes installation work difficult. In particular, when a reciprocating conveyance unit is provided inside a safe or the like for storing paper sheets and the sensor is attached so that the target stop position matches the detection position of the setting position sensor, the setting position sensor If the installation position of the sensor is close to the wall or other mechanism that makes up the safe, or the setting position sensor makes space with the safe wall or other mechanism, it becomes difficult to install the setting position sensor. Cost increases.

  The present invention has been made paying attention to such a problem, and its purpose is that the mounting position of the setting position sensor for automatically setting the target value as the control amount varies. In addition, the target value for stopping the reciprocating conveyance unit at a desired target stop position can be set to an appropriate value, and the installation work of the setting position sensor is simplified to improve the assembly workability of the apparatus. It is to provide a leaf processing apparatus.

  In order to achieve this object, the present invention takes the following measures.

That is, the paper sheet processing apparatus of the present invention is configured to reciprocate by power received from the motor via a motor that rotates and a crank mechanism that converts the rotational motion of the motor into reciprocating motion. Of the movable range of operation, a reciprocating conveyance unit in which at least one end of both ends in the reciprocating direction is set as a target stop position, a rotation amount detecting unit for detecting the rotation amount of the motor, and a movable range of the reciprocating operation A reference position sensor that detects that the reciprocating conveyance unit has passed a reference detection position preset in the vicinity of the end opposite to the target stop position, and the reciprocating conveyance unit is moved through rotation of the motor. The rotation amount detected by the rotation amount detection unit is started from the time when the reciprocating conveyance unit is detected by the reference position sensor, and the measured rotation amount becomes a preset target value. A control unit that moves the reciprocating conveyance unit to the target stop position by controlling the rotation of the motor as described above, and the reciprocating conveyance unit passes through a setting detection position determined according to the attachment position. A setting position sensor for detecting that the reciprocating operation unit is provided in the vicinity of the end on the same side as the target stop position in the reciprocating movable range, and the control unit is configured to perform the reciprocating conveyance unit at a predetermined timing. The motor is rotated so as to pass through the reference detection position, the setting detection position, and the target stop position in order, and then pass again through the setting detection position, and from the reference detection position to the setting detection position. The amount of rotation of the motor necessary for moving the reciprocating conveyance unit to the position and the mode necessary for moving the reciprocating conveyance unit from the setting detection position to the target stop position. Necessary to move the reciprocating conveyance unit from the reference detection position obtained based on the detected rotation amount to the target stop position. The rotation amount is set as the target value.

  In this way, at a predetermined timing, the reciprocating conveyance unit sequentially rotates through the reference detection position, the detection position for setting, and the target stop position, and then passes through the detection position for setting again. The number of rotations required for movement from the setting detection position to the setting detection position and the number of rotations for the reciprocation of the number of rotations required for movement from the setting detection position to the target stop position are detected, and the reference detection is performed based on the detected rotation speed. Since the rotation amount necessary for the movement from the position to the target stop position is obtained and this rotation amount is set as the target value, the setting position sensor is attached in a state where the detection position and the target stop position are misaligned. Even if it is, the target value required to move the reciprocating conveyance unit to the target stop position can be automatically set to an appropriate value, and appropriate movement control of the reciprocating conveyance unit can be realized, and the setting position sensor Take Possible to improve the assembling workability of the apparatus the precision as required with become.

Further, the paper sheet processing apparatus of another configuration according to the present invention reciprocates by the power received from the motor via a motor that rotates and a crank mechanism that converts the rotational motion of the motor into a reciprocating motion. And a reciprocating conveyance unit in which at least one end of both ends in the reciprocating direction is set as a target stop position in a movable range of the reciprocating operation, a rotation amount detecting unit for detecting the rotation amount of the motor, and a reciprocating operation A reference position sensor for detecting that the reciprocating conveyance unit has passed a reference detection position set in advance in the vicinity of the end opposite to the target stop position in the movable range, and the rotation through the motor. The reciprocating conveyance unit is moved, and the rotation amount detected by the rotation amount detecting unit is started from the time when the reciprocating conveyance unit is detected by the reference position sensor, and the measured rotation amount is preset. A control unit that moves the reciprocating conveyance unit to the target stop position by controlling the rotation of the motor so as to be a standard value, and the control unit performs the reciprocating conveyance at a predetermined timing. The motor is rotated so that the section passes through the reference detection position and the target stop position in order and then passes again through the reference detection position, and the reciprocating conveyance section is moved from the reference detection position to the target stop position. A rotation amount for a reciprocation of a rotation amount of a motor necessary for movement is detected by the rotation amount detection unit, and a value half of the detected rotation amount is set as the target value. And According to this configuration, the same effect as described above can be obtained without using the setting position sensor.

To reduce the risk of sensor failure, reduce manufacturing costs, and reduce the size of the device, set both ends in the reciprocating direction within the movable range of the reciprocating transport unit to the first target stop position and the second target stop position, respectively. The reference position sensor that detects the passage of the reciprocating conveyance unit at the first reference detection position set on the opposite side of the first target stop position is the second target stop position. And also passes through the reciprocating conveyance unit at a second reference detection position set on the opposite side of the second target stop position. It is preferable that the reference position sensor for detecting the position also serves as a setting position sensor provided in the vicinity of the end on the same side as the first target stop position.

  In order to suppress an increase in manufacturing cost and grasp the stop position of the reciprocating conveyance unit, the setting position sensor or the reference position sensor that also serves as the setting position sensor is located at a detection position determined according to an attachment position. It detects that there is a reciprocating conveyance unit, and the reciprocating conveyance unit detects the detection when a detection state where the reciprocating conveyance unit is present at the detection position and a non-detection state where the reciprocating conveyance unit is not present at the detection position are switched. It is configured to detect that it has passed a position, and when the reciprocating conveyance unit is located at a position approaching the target stop position from the detection position, the detection state is established, and the reciprocating conveyance unit is located more than the detection position. Furthermore, it is desirable that the attachment position is set so that the non-detection state is obtained when the position is away from the target stop position.

  In order to realize automatic setting of the target value without affecting the existing operation for transporting paper sheets, it is advantageous that the predetermined timing is during initial processing executed when the power is turned on. Is.

  In order to appropriately avoid the problems that easily occur when the reciprocating conveyance unit is provided in the removable safe, the reciprocating conveyance unit is provided in the removable safe, and the safe is mounted at the predetermined timing. It is effective when it is done.

  As described above, the present invention is provided with a position sensor that detects that the reciprocating conveyance unit has passed a certain position such as a setting detection position, and the reciprocating conveyance unit sequentially passes a certain position and a target stop position. The rotation amount of the motor is measured until it passes through a certain position again, and the half of the measured rotation amount is set as the rotation amount necessary for moving the reciprocating conveyance unit from the certain position to the target stop position. Since the target value used for movement control is automatically set using the amount, even if the position sensor is attached in a state where its detection position and target stop position are misaligned, the target value is set to an appropriate value. Thus, it is possible to realize appropriate movement control of the reciprocating conveyance unit, and it is possible to improve the assembly workability of the apparatus by eliminating the need for mounting accuracy of the position sensor.

1 is a schematic overall configuration diagram of a paper sheet processing apparatus according to an embodiment of the present invention. The figure corresponding to FIG. 1 which shows the state which extracted some safes. The block diagram which shows the outline | summary of a structure and function of the embodiment. The figure which shows typically the reciprocating conveyance part which conveys a banknote The figure which shows typically a reciprocating conveyance part and the periphery structure relevant to this. The figure which shows typically the relationship between a reciprocating conveyance part and a position sensor. The flowchart which shows the target value automatic setting process routine performed in order to control the operation | movement which sets a target value automatically. The flowchart which shows the movement control processing routine performed in order to control the movement of a reciprocating conveyance part. The figure which shows typically the relationship between the reciprocating conveyance part and position sensor in other embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a paper sheet processing apparatus as a banknote block that handles banknotes will be described as an example.

  The paper sheet processing apparatus of this embodiment shown in FIG. 1 is used as, for example, a ticket vending machine that sells tickets, cards, check-out tickets, etc., and is stored in a banknote block 1 and a banknote storage place. The four safes A to D, and the conveying means 2 for identifying the denomination of the inserted bills by the identifying unit 22 and conveying the denominations to the corresponding safes among the safes A to D via the conveying path 21; 2 and the control part 23 (refer FIG. 3) which controls conveyance of the paper sheets in the safes AD.

  The banknote block 1 is provided with an insertion port 11, a withdrawal port 13, and a return port 14 (hereinafter also referred to as a withdrawal port 12 together with the withdrawal port 13 and the return port 14) on the side closer to the user. A fixed-type mixing safe D is provided on the side close to the user, and three cassette-type safes A to C are provided on the side, on the side where the staff operates. Also, in the banknote block 1, a temporary holding unit E or a withdrawal holding unit F that temporarily holds banknotes on the transport path 21, unreadable, double feed occurrence, defective ticket collection that collects defective tickets at the time of abnormality detection Part G and the like are also provided. The cassette-type safes A to C are detachable safes that can be pulled out by gripping the handle h as illustrated in FIG. 2, and are diagrams for detecting whether or not the safes A to C are mounted. A safe attachment / detachment sensor 9 shown in FIG.

  As shown in FIGS. 1 and 3, the identification unit 22 mainly performs denomination determination of banknotes, and identifies only denominations of banknotes inserted through the insertion slot 11. On the other hand, when banknotes are replenished to each of the safes A to D, or when banknotes are collected from each of the safes A to D, a simple identification unit 20 for supply and collection (hereinafter referred to as simple identification). The denomination is identified in the section). The simple type mentioned here refers to a type that performs only denomination identification and does not identify the authenticity of banknotes (whether it is counterfeit).

  As shown in FIG. 3, the transport unit 2 includes the transport path 21 including a not-illustrated gripping roller, a transport belt, a direction changing unit such as a wing, and the banknotes to be transported, as in a known banknote processing apparatus. The identification unit 22 and the simple identification unit 20 for identifying the denomination of

  As shown in FIG. 4, the safes A to C reciprocate vertically in order to convey banknotes between the stacking unit a <b> 2 that stores banknotes in a stacked state and the stacking unit a <b> 2 and the transport path 21. A reciprocating conveyance unit 26a using a fork is provided. As shown in FIG. 5, the reciprocating conveyance unit 26 a is supported by the support unit 26 b so as to be capable of reciprocating in the vertical direction while holding both side ends in the width direction of the bill Pa that is a paper sheet. As shown in FIG. 5, in order to move the reciprocating transport unit 26a up and down (reciprocating), the motor 4 such as a DC motor that is rotationally driven by energization from the energization unit pw with poor stopping accuracy and the rotational motion of the motor 4 are A crank mechanism 3 including a crank arm 3 a and a crankshaft 3 b that convert to a reciprocating motion is provided, and the reciprocating transport unit 26 a is configured to reciprocate by the power received from the motor 4 via the crank mechanism 3. ing. The rotation power output shaft of the motor 4 is provided with a rotation amount detection unit 5 using an encoder that detects the rotation angle (rotation amount) of the motor 4, and the encoder is detected every time a predetermined rotation angle (rotation amount) is detected. Outputs a pulse signal.

Here, as shown schematically in FIG. 6 in which the up and down reciprocating motion is developed in a ring shape, both ends in the reciprocating direction of the reciprocating movable range of the reciprocating transport unit 26a are set as target stop positions, respectively. The first target stop position sp1 is set, and the lower part is set as the second target stop position sp2. A first detection is made to detect that the reciprocating conveyance unit 26a has passed the first reference detection position bs1 set in advance as a reference position for movement control for moving the reciprocating conveyance unit to the first target stop position sp1. A reference position sensor 7a and a first setting position sensor 8a for detecting that the reciprocating conveyance unit 26a has passed the first setting detection position st1 used for automatically setting the control amount of movement control are respectively provided. It is provided in association with the first target stop position sp1. More specifically, the first reference position sensor 7a is set on the side opposite to the first target stop position sp1 in the movable range of the reciprocating transport unit 26a, and the first setting position sensor 8a is In the movable range of the reciprocating transport unit 26a, it is set on the same side as the first target stop position sp1. Similarly, for the second target stop position sp2, the second reference position sensor 7b that detects that the reciprocating conveyance unit 26a has passed the preset second reference detection position bs2, and the second setting stop position sp2 A second setting position sensor 8b that detects that the reciprocating conveyance unit 26a has passed the detection position st2 is provided in association with the second target stop position sp2. More specifically, the second reference position sensor 7b is set on the opposite side to the second target stop position sp2 in the movable range of the reciprocating transport unit 26a, and the second setting position sensor 8a is In the movable range of the reciprocating transport unit 26a, it is set on the same side as the second target stop position sp2. Each positional relationship is such that when the motor 4 (see FIG. 5) continues to rotate in a certain direction, the reciprocating conveyance unit 26a causes the first target stop position sp1, the second reference detection position bs2, and the second setting. It is defined that the detection position st2, the second target stop position sp2, the first reference detection position bs1, and the first setting detection position st1 pass in order and return to the first target stop position sp1 again. Yes. Of course, the first setting detection position st1 or the second reference detection position bs2 may coincide with the first target stop position sp1, or the second setting detection position st2 or The first reference detection position bs1 may coincide with the second target stop position sp2.

  In the present embodiment, when the first reference detection position bs1 and the second setting detection position st2 are treated as the same, the first reference position sensor 7a associated with the first target stop position sp1 is This also serves as the second setting position sensor 8b associated with the target stop position sp2. Similarly, by treating the second reference detection position bs2 and the first setting detection position st1 as the same, the second reference position sensor 7b associated with the second target stop position sp2 It also serves as the first setting position sensor 8a associated with the stop position sp1. In this way, one sensor is shared by both roles of a reference position sensor and a setting position sensor. Of course, each sensor may be provided separately.

  As shown in FIG. 6, the setting position sensors 8b and 8a or the reference position sensors 7a and 7b that also serve as the setting position sensors 8b and 8a are attached like an optical sensor including a light projecting unit and a light receiving unit (not shown). Detects the presence of the reciprocating conveyance unit 26a at a detection position (indicated by a broken line in the figure) determined according to the position. The detection state (light-shielded state) has the reciprocating conveyance unit 26a at the detection position and the reciprocal conveyance to the detection position. It is configured to detect that the reciprocating conveyance unit 26a has passed the detection position when the non-detection state (transmission state) without the part 26a is switched, and reciprocal conveyance is performed using the member dimensions of the reciprocating conveyance unit 26a. When the part 26a is located at a position approaching the target stop position sp1 (sp2) from the detection position, the detection state is entered, and the reciprocating transport part 26a is further set to the target stop position sp1 (sp2) than the detection position. Its mounting position is set so that the non-detection state (transmission state) when in et away position. As a specific example using the member dimensions of the reciprocating transport unit 26a, for example, when the part to be detected by the sensor in the reciprocating transport unit 26a is configured by a plate-shaped member such as a sheet metal, Use of dimensions and the like can be mentioned. Of course, it is not limited to this. In other words, each reference position sensor 7 (7a, 7b), which also serves as the setting position sensors 8b and 8a, reciprocates to either the first target stop position sp1 and its vicinity or the second target stop position sp2 and its vicinity. It is possible to detect whether the portion 26a is present. These reference position sensors 7 (7a, 7b) electrically input detection results to the control unit 23 as shown in FIG. Of course, although the optical sensor is used in this embodiment, a mechanical sensor or a magnetic sensor may be used.

  As shown in FIG. 3, the control unit 23 controls driving of the transport unit 2 and transport of paper sheets in the safes A to D. For example, a bill inserted from the insertion slot 11 is sent to the identification unit 22. After passing, it distribute | circulates along the conveyance path | route 21, changes the direction of a banknote as needed by the branch part ag provided in various places, safe A-D, temporary storage part E, withdrawal reservation part F In addition to performing the operation of transporting to the payout opening 12, the primary holding units a1 to c1, the defective ticket collecting unit G, etc., the banknote feeding operation from the safes A to D etc. onto the transport path 21, the denomination in the simple identification unit 20 The system is configured to perform overall control including identification, transport operation to the next transport destination, the payout opening 12 and the safes A to D, and the vertical movement of the reciprocating transport unit 26a.

  In order to perform such control, the control unit 23 is configured by a normal microcomputer unit having a CPU, a memory, and an interface in the same manner as a well-known paper sheet processing apparatus. Necessary programs such as a movement control processing routine for controlling the movement of the reciprocating conveyance unit 26a shown in FIG. 8 and a target value automatic setting processing routine shown in FIG. 7 are written, and the CPU calls and executes necessary programs as appropriate. Thus, in cooperation with the peripheral hardware resources, the movement control unit 24 and the target value automatic setting unit 25 shown in FIG. 3 are realized.

  As shown in FIG. 3, the movement control unit 24 performs movement control for moving the reciprocating conveyance unit 26a through rotation driving of the motor 4 and stopping the reciprocating conveyance unit 26a at a desired target stop position. As shown in FIGS. 5 and 6, the reciprocating conveyance unit 26a is moved through the rotational drive of the motor 4 by energizing the motor 4, and the rotation amount detected by the rotation amount detecting unit 5 is measured. Is detected from the reference position sensor 7a (7b), and the reciprocating conveyance unit is controlled by controlling the driving of the motor 4 so that the measured rotation amount matches the preset target value Ds1 (Ds2). 26a is stopped at a desired target stop position sp1 (sp2). In the present embodiment, as shown in FIG. 6, the first target for moving the reciprocating transport unit 26a to the first target stop position sp1 that is the target of the stop position when moving in the antigravity direction side. The value Ds1 and the second target value Ds2 for moving the reciprocating conveyance unit 26a to the second target stop position sp2 that is the target of the stop position when moving in the direction of gravity are separately set in advance. 3 (see FIG. 3), the movement control unit 24 shown in FIG. 3 selects a target value corresponding to the destination of the target values Ds1 and Ds2, and moves the reciprocating conveyance unit 26a using the selected target value. To control.

  The target value automatic setting unit 25 shown in FIG. 3 performs rotation control of the motor 4 and detection results of the rotation amount detection unit 5, detection results of the reference position sensors 7a and 7b, and setting position sensors 8a and 8b at predetermined timings. Using the detection result, the first target value Ds1 and the second target value Ds2 are automatically set. The predetermined timing is set at the time of initialization processing executed when the power is turned on, when the safe attachment / detachment sensor 9 detects the attachment of the safes AC.

  Specifically, as shown in FIG. 6, when the target value automatic setting unit 25 sets the first target value Ds1, the reciprocating conveyance unit 26a sets the first reference detection position bs1 and the first setting. The motor 4 in FIG. 3 is rotated so as to pass through the first detection position st1 and the first target stop position sp1 in order and again through the first setting detection position st1. At this time, the rotation amount (encode pulse) detected by the rotation amount detection unit 5 is measured, and the reciprocating conveyance unit 26a is moved from the first reference detection position bs1 to the first setting detection position st1. And a rotation amount T2 for the reciprocation of the rotation amount of the motor necessary for moving the reciprocating conveyance unit 26a from the first setting detection position st1 to the first target stop position sp1. get. Then, the rotation amount (T1 + T2 / 2) necessary for moving the reciprocating conveyance unit 26a from the first reference detection position bs1 obtained from the detected rotation amounts T1 and T2 to the first target stop position sp1 is calculated. It is set as the first target value Ds1.

  Similarly, as shown in FIG. 6, when the second target value Ds2 is set, the reciprocating transport unit 26a uses the second reference detection position bs2, the second setting detection position st2, and the second target value. The motor 4 in FIG. 3 is rotated so as to pass through the stop position sp2 in order and again through the second setting detection position st2. At this time, the rotation amount (encode pulse) detected by the rotation amount detection unit 5 is measured, and the reciprocating conveyance unit 26a is moved from the second reference detection position bs2 to the second setting detection position st2. And a rotation amount T4 corresponding to the reciprocation of the rotation amount of the motor necessary for moving the reciprocating conveyance unit 26a from the second setting detection position st2 to the second target stop position sp2. get. Then, the amount of rotation (T3 + T4 / 2) required to move the reciprocating transport unit 26a from the second reference detection position bs2 obtained from the detected rotation amounts T3 and T4 to the second target stop position sp2 is calculated. Set as the second target value Ds2.

  Thus, the target value automatic setting unit 25 is connected to the motor 4 via the crank mechanism 3 in which the reciprocating transport unit 26a converts the rotational motion into the reciprocating motion, and the target stop position sp1 (sp2) is the movable range of the reciprocating motion. In the configuration set at both ends, the number of rotations detected before the reciprocating transport unit 26a passes through a certain position to reach the target stop position and returns to the certain position again from the certain position. A value corresponding to half of the detected rotation speeds T2 and T4 is used by utilizing the fact that it corresponds to the reciprocation of the rotation speed necessary for moving the reciprocating conveyance unit 26a to the stop position.

  That is, the control unit 23 in FIG. 3 determines whether or not the initialization process executed when the power is turned on is being executed, and whether or not the safes A to C are attached by the safe attach / detach sensor 9 (see FIG. 7). Process ST1). When it is determined that the initialization process is being executed or the safes A to C are mounted (see step ST1: YES in FIG. 7), the target value automatic operation is started, and as shown in FIG. The reciprocating transport unit 26a sequentially passes the first reference detection position bs1, the first setting detection position st1, and the first target stop position sp1, and then passes the first setting detection position st1 again. 4 and the reciprocating conveyance unit 26a passes through the second reference detection position bs2, the second setting detection position st2 and the second target stop position sp2, and again returns to the second setting detection position st2. The motor 4 is rotationally driven so as to pass. That is, the motor 4 is rotated at least once to reciprocate the reciprocating conveyance unit 26a at least once (see process ST2 in FIG. 7). At this time, the rotation amount (encode pulse) detected by the rotation amount detection unit 5 is measured, and the rotation amounts T1, T2, T3, and T4 are acquired (see process ST3 in FIG. 7). Then, the first target value Ds1 = T1 + T2 / 2 is set, the second target value Ds2 = T3 + T4 / 2 is stored in the memory, and the target value automatic operation is terminated (see process ST4 in FIG. 7). .

  After performing the above-described target value automatic setting operation, as shown in FIG. 8, for example, when a movement command to the first target stop position sp1 is issued from a host controller or the like (see processing ST11: YES), In order to move the reciprocating conveyance unit 26a from below to above so as to pass through the first reference detection position bs1 shown in FIG. 6 and reach the first target stop position sp1, the motor 4 is passed through the energization unit pw shown in FIG. Is energized to start the rotation of the motor 4 (see process ST12 in FIG. 8). When detection by the first reference position sensor 7a is performed (see step ST13: YES in FIG. 8), measurement of the rotation amount (the number of encode pulses) detected by the rotation amount detection unit 5 is started from that point (see FIG. 8). (See process ST14 in FIG. 8). The rotational drive of the motor 4 is controlled so that the measured rotation amount becomes the first target value Ds1 set in advance, and the reciprocating conveyance unit is stopped at the first target stop position sp1 (step ST15 in FIG. 8: YES). Reference), and returns to the execution of the process ST11 shown in FIG.

  The second target stop position sp2 is almost the same as the first target stop position sp1, and the first reference position sensor 7a in the above description is changed to the second reference position sensor 7b. By moving Ds1 to the second target value Ds2 and performing the processes ST16 to ST20 shown in FIG. 8 in the same manner as described above, the movement control to the second target stop position sp2 is performed, and the reciprocating conveyance unit is desired. To the second target stop position sp2.

  As described above, the sheet processing apparatus according to the present embodiment reciprocates by the power received from the motor 4 via the motor 4 that rotates and the crank mechanism 3 that converts the rotational motion of the motor 4 into reciprocating motion. And a reciprocating conveyance unit 26a in which at least one of both ends in the reciprocating direction in the movable range of the reciprocating operation is set to the target stop position sp1 (sp2), and rotation for detecting the rotation amount of the motor 4 A reference position sensor 7a (7b) that detects that the reciprocating transport unit 26a has passed through a reference detection position bs1 (bs2) provided in advance in association with the amount detection unit 5 and the target stop position sp1 (sp2). The reciprocating conveyance unit 26a is moved through the rotation of the motor 4, and the rotation amount detected by the rotation amount detecting unit 5 is detected by the reciprocating conveyance unit 26a by the reference position sensor 7a (7b). Control to move the reciprocating conveyance unit 26a to the target stop position sp1 (sp2) by controlling the rotation of the motor 4 so that the measured rotation amount becomes a preset target value Ds1 (Ds2). And a setting position sensor 8a (8b) for detecting that the reciprocating conveyance unit 26a has passed through the setting detection position st1 (st2) determined according to the attachment position is a target stop position sp1 (sp2). ) And the control unit 23 is configured such that at a predetermined timing, the reciprocating conveyance unit 26a has the reference detection position bs1 (bs2), the setting detection position st1 (st2), and the target stop position sp1 (sp2). , And the motor 4 is rotated so as to pass again through the setting detection position st1 (st2), and the setting is started from the reference detection position bs1 (bs2). The amount of rotation T1 (T3) of the motor necessary for moving the reciprocating conveyance unit 26a to the known position st1 (st2) and the reciprocating conveyance unit 26a from the setting detection position st1 (st2) to the target stop position sp1 (sp2) The rotation amount T2 (T4) corresponding to the reciprocation of the rotation amount of the motor necessary for the detection is detected by the rotation amount detector 5, and the reference detection position obtained based on the detected rotation amounts T1 and T2 (T3 and T4) The rotation amount (T1 + T2 / 2) [T3 + T4 / 2] necessary for moving the reciprocating conveyance unit 26a from bs1 (bs2) to the target stop position sp1 (sp2) is set as the target value Ds1 (Ds2). ing.

  In this way, at a predetermined timing, the reciprocating conveyance unit 26a sequentially passes through the reference detection position bs1 (bs2), the setting detection position st1 (st2), and the target stop position sp1 (sp2), and again the setting detection position st1. The motor 4 is rotated so as to pass through (st2), and the rotation speed T1 (T3) and the setting detection position st1 (for the movement from the reference detection position bs1 (bs2) to the setting detection position st1 (st2) are required. A reference speed T2 (T4) corresponding to the reciprocating speed required for the movement from st2) to the target stop position sp1 (sp2) is detected, and the reference detection is performed based on the detected speed T1 and T2 (T3 and T4). A rotation amount (T1 + T2 / 2) [T3 + T4 / 2] necessary for movement from the position bs1 (bs2) to the target stop position sp1 (sp2) is obtained, and this rotation amount is obtained as a target value Ds1 (Ds Therefore, even if the setting position sensor 8a (8b) is attached in a state where the detection position and the target stop position sp1 (sp2) are shifted, the reciprocating conveyance unit 26a is stopped at the target stop. The target value Ds1 (Ds2) necessary for moving to the position sp1 (sp2) can be automatically set to an appropriate value, and appropriate movement control of the reciprocating transport unit 26a can be realized, and the setting position sensor 8a (8b) It is possible to improve the assembly workability of the apparatus without requiring the mounting accuracy.

  Particularly, in the present embodiment, both ends of the reciprocating direction in the movable range of the reciprocating transport unit 26a are set to the first target stop position sp1 and the second target stop position sp2, respectively, and the first target stop position is set. The first reference position sensor 7a associated with the position sp1 also serves as the second setting position sensor 8b associated with the second target stop position sp2, and is also associated with the second target stop position sp2. Since the reference position sensor 7b also serves as the first setting position sensor 8a associated with the first target stop position sp1, the setting position sensor 8a (associated with one target stop position sp1 (sp2)). 8b) and the role of the reference position sensor 7b (7a) associated with the other target stop position sp2 (sp1) are shared by one sensor. In, where there is a need for one or two sensors per target stop position of, can reduce the number of sensors, reducing the risk of failure and manufacturing cost, it is possible to reduce the size of the apparatus.

  Furthermore, in the present embodiment, the setting position sensors 8a and 8b or the reference position sensors 7a and 7b that also serve as the setting position sensors 8a and 8b detect that the reciprocating conveyance unit 26a is located at a detection position determined according to the attachment position. The reciprocating conveyance unit 26a passes the detection position when a detection state (light-shielding state) with the reciprocating conveyance unit 26a at the detection position and a non-detection state (transmission state) without the reciprocating conveyance unit 26a at the detection position are switched. When the reciprocating conveyance unit 26a is located at a position approaching the target stop position sp1 (sp2) from the detection position by using the member dimensions of the reciprocating conveyance unit 26a, the detection state (light shielding) State), and when the reciprocating transport unit 26a is further away from the target stop position sp1 (sp2) than the detection position, the non-detection state (transmission state) is established. As described above, the mounting position is set so that the setting position sensors 8a and 8b or the reference position sensors 7a and 7b that also serve as the setting position sensors 8a and 8b are used to reciprocate the target stop positions sp1 and sp2 in the vicinity thereof. It is possible to detect whether or not there is 26a, and to avoid the increase in manufacturing cost by separately providing a sensor for monitoring the stop position of the reciprocating conveyance unit 26a, and to grasp the stop point of the reciprocating conveyance unit 26a Is possible.

  Furthermore, in the present embodiment, the above predetermined timing is the initialization process executed when the power is turned on, and during the initialization process, the conveyance control of the paper sheet Pa is not performed. It is possible to automatically set the target value Ds1 (Ds2) without affecting the existing operation for conveying.

  In addition, in this embodiment, since the reciprocating conveyance part 26a is provided in the detachable cassette-type safes A to C, even in the same type of safes A to C, it is appropriate for each of the safes A to C due to differences in assembly accuracy and the like. The target value Ds1 (Ds2) is different, and the difference between the target value Ds1 (Ds2) and the appropriate value is likely to occur due to the attachment or detachment of different safes A to C, and the stop position is likely to be shifted, and the ambient temperature (ambient temperature) changes. However, when the safes A to C are mounted, the target value Ds1 (Ds2) is automatically adjusted when the safes A to C are mounted. It is possible to appropriately move the reciprocating conveyance unit 26a to a desired target stop position sp1 (sp2) by appropriately avoiding the trouble that is easily caused by providing the unit 26a in the removable safes A to C. That.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not only by the above description of the embodiments but also by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the present embodiment, the paper sheet is a banknote Pa, but may be applied to other paper sheets such as a boarding ticket, a card, and a checkout ticket.

  As shown in FIG. 9A, the reference position sensor 107a (107b) is provided in association with the target stop position sp1 (sp2) without providing the setting position sensor, and the control unit 23 (see FIG. 3) The reciprocating conveyance unit 26a sequentially passes the reference detection position bs1 (bs2) and the target stop position sp1 (sp2) and then rotates again so as to pass the reference detection position bs1 (bs2). The amount of rotation T5 (T6) corresponding to the amount of rotation of the motor necessary for moving the reciprocating conveyance unit 26a from bs1 (bs2) to the target stop position sp1 (sp2) is detected by the rotation amount detection unit, and the detected rotation You may comprise so that the value (T5 / 2) [T6 / 2] of the half of quantity T5 (T6) may be set as target value Ds1 (Ds2). Even in this configuration, similarly to the present embodiment, even when the position sensor is attached in a state where the detection position and the target stop position sp1 (sp2) are shifted, the reciprocating transport unit 26a is moved to the target stop position sp1. The target value Ds1 (Ds2) required for moving to (sp2) can be automatically set to an appropriate value, and appropriate movement control of the reciprocating conveyance unit 26a can be realized, and the mounting accuracy of the position sensor is not required, and the apparatus is assembled. Workability can be improved.

  In this case, as shown in FIG. 9B, the reference position sensor 107a associated with one target stop position sp1 is also used as the reference position sensor 107b associated with the other target stop position sp2. It may be possible to reduce manufacturing costs and failure risks by reducing the number of points.

  Finally, the specific configuration of each part is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

23 ... Control part 26a ... Reciprocating conveyance part 3 ... Crank mechanism 4 ... Motor 5 ... Rotation amount detection part 7a, 7b ... Reference position sensor 8b, 8a ... Setting position sensor sp1, sp2 ... Target stop position sp1 ... First target Stop position sp2 ... second target stop position bs1, bs2 ... reference detection position bs1 ... first reference detection position bs2 ... second reference detection position st1, st2 ... setting detection position st1 ... first setting Detection position st2 ... second setting detection positions Ds1, Ds2 ... target value Ds1 ... first target value Ds2 ... second target values T1, T2, T3, T4, T5, T6 ... detected rotation amount

Claims (6)

A rotationally driven motor;
It is configured to reciprocate by the power received from the motor via a crank mechanism that converts the rotational movement of the motor into a reciprocating movement, and at least one end of both ends in the reciprocating direction of the movable range of the reciprocating movement is a target. A reciprocating conveyance unit set at a stop position;
A rotation amount detection unit for detecting the rotation amount of the motor;
A reference position sensor that detects that the reciprocating conveyance unit has passed a reference detection position set in advance in the vicinity of the end opposite to the target stop position in the reciprocating movable range ;
The reciprocating conveyance unit is moved through the rotation of the motor, and the rotation amount detected by the rotation amount detecting unit is started from the time when the reciprocating conveyance unit is detected by the reference position sensor. A control unit that moves the reciprocating conveyance unit to the target stop position by controlling the rotation of the motor so as to have a preset target value;
A setting position sensor for detecting that the reciprocating conveyance unit has passed a detection position for setting determined according to the attachment position is provided in the vicinity of the end on the same side as the target stop position in the movable range of the reciprocating operation. In addition, the control unit causes the reciprocating conveyance unit to sequentially pass through the reference detection position, the setting detection position, and the target stop position at a predetermined timing, and pass through the setting detection position again. Rotating the motor to move the reciprocating conveyance unit from the reference detection position to the setting detection position and the rotation amount of the motor necessary to move the reciprocating conveyance unit from the setting detection position to the target stop position. The amount of rotation of the motor necessary for movement is detected by the amount-of-return detection unit, and the reference detection position obtained based on the detected amount of rotation is Sheet processing apparatus characterized by being configured to set the amount of rotation required to move the reciprocating conveyor portion to the target stop position as the target value. A rotationally driven motor;
It is configured to reciprocate by the power received from the motor via a crank mechanism that converts the rotational movement of the motor into a reciprocating movement, and at least one end of both ends in the reciprocating direction of the movable range of the reciprocating movement is a target. A reciprocating conveyance unit set at a stop position;
A rotation amount detection unit for detecting the rotation amount of the motor;
A reference position sensor that detects that the reciprocating conveyance unit has passed a reference detection position set in advance in the vicinity of the end opposite to the target stop position in the reciprocating movable range ;
The reciprocating conveyance unit is moved through the rotation of the motor, and the rotation amount detected by the rotation amount detecting unit is started from the time when the reciprocating conveyance unit is detected by the reference position sensor. A control unit that moves the reciprocating conveyance unit to the target stop position by controlling the rotation of the motor so as to have a preset target value;
The control unit rotates the motor so that the reciprocating conveyance unit sequentially passes the reference detection position and the target stop position and then passes the reference detection position again at a predetermined timing. The amount of rotation of the reciprocation of the motor necessary to move the reciprocating conveyance unit from the detection position to the target stop position is detected by the rotation amount detection unit, and a value half the detected amount of rotation is detected by the target. A paper sheet processing apparatus configured to be set as a value. The both ends of the reciprocating direction in the movable range of the reciprocating conveyance unit are set to the first target stop position and the second target stop position, respectively.
The reference position sensor that detects the passage of the reciprocating conveyance unit at the first reference detection position set on the side opposite to the first target stop position is an end on the same side as the second target stop position. And a reference position sensor for detecting the passage of the reciprocating conveyance unit at a second reference detection position set on the opposite side of the second target stop position. The sheet processing apparatus according to claim 1, which also serves as a setting position sensor provided in the vicinity of an end on the same side as the first target stop position.   The setting position sensor or the reference position sensor that also serves as the setting position sensor detects that the reciprocating conveyance unit is located at a detection position determined according to an attachment position, and the reciprocating conveyance unit is located at the detection position. The reciprocating conveyance unit is configured to detect that the reciprocating conveyance unit has passed the detection position when the detection state and the non-detection state in which the reciprocating conveyance unit is not present at the detection position are switched, and the reciprocating conveyance unit is configured to detect the detection. The attachment position so that the detection state is established when the position is close to the target stop position from the position, and the non-detection state is established when the reciprocating transport unit is further away from the target stop position than the detection position. The paper sheet processing apparatus according to claim 1 or 3, wherein is set.   The paper sheet processing apparatus according to claim 1, wherein the predetermined timing is an initial process executed when power is turned on.   The sheet processing apparatus according to any one of claims 1 to 4, wherein the reciprocating conveyance unit is provided in a removable safe, and the predetermined timing is when the safe is mounted.

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