JP5613008B2 - Paper processing equipment - Google Patents

Description

  The present invention relates to a control method for a paper processing apparatus, and more particularly to a control method for a paper processing apparatus having a cutting mechanism that cuts paper in a direction orthogonal to the paper transport direction.

  As shown in FIG. 20, the sheet processing apparatus having the cutting mechanism normally includes transport rollers 202 and 203 on the upstream side and the downstream side in the paper transport direction F of the cutting mechanism 201, respectively. Along with the operation, the conveying rollers 202 and 203 are driven synchronously and stopped synchronously, whereby a predetermined portion of the paper P is continuously cut and the cut products Q1, Q2,. It discharges to the receiving part 204 (patent document 1 etc.).

  Further, as a product arrangement pattern of the paper P, for example, as shown in FIG. 8, when a plurality of products (indicated by hatching) Q1, Q2,... Are arranged side by side in order from the downstream side in the paper conveyance direction F. In addition, a cutting region X1 having a cutting width D is set between the products Q1Q2 adjacent to each other in the transport direction F, between the products Q2Q3, and between the products Q3Q4. By cutting the cutting region X1 during cutting, The edges of the products Q1, Q2, Q3, Q4 are cut cleanly.

JP 2005-239212 A

  However, in the product arrangement pattern as shown in FIG. 8, in order to efficiently use the area of the paper without waste, when the cut width D of the cut region X1 is set small, the working environment conditions such as temperature and humidity, The following problems may occur depending on the type of sheet or the conveyance speed.

  That is, as shown in FIG. 20, when being discharged to the paper receiving unit 204, the preceding product Q1 and the succeeding product Q2 collide with each other, leading to a jam condition, or the succeeding product Q2 below the preceding product Q1. In some cases, the stacking order on the paper receiving unit 204 may be out of order, or the alignment of the paper edges on the paper receiving unit 204 may be disturbed.

  In particular, when the product Q1 or the like needs to be loaded in the correct order, such as an invoice or invoice with addresses written in the order of the list, or a playing card, it takes time to arrange the products after cutting if the loading order is disturbed.

  The object of the present invention is to prevent the preceding product and the succeeding product from colliding and preventing the succeeding product from entering the lower side of the preceding product when being sequentially discharged after being cut into products. It is an object of the present invention to provide a control method for a sheet processing apparatus that can discharge and stack on a receiving unit in an orderly manner without disturbing the stacking order.

  In order to solve the above-described problems, the present invention includes a cutting mechanism that cuts a sheet in a direction orthogonal to the sheet conveyance direction, and first and second sheets disposed upstream and downstream of the sheet conveyance of the cutting mechanism. A conveyance mechanism, a drive mechanism capable of independently operating the first and second conveyance rollers, a control unit for controlling the drive mechanism, and a sheet conveyance downstream of the second conveyance roller on the sheet conveyance downstream side. A paper receiving portion disposed on a side of the paper processing apparatus, wherein the paper cutting device cuts each paper into a plurality of products by the cutting mechanism. A continuous cutting mode in which the first and second transport rollers always operate in synchronization to perform continuous cutting when the cutting width in the paper transport direction of the cutting region between the reference values is equal to or greater than a reference value; Paper transport method when 0 to less than the reference value By temporarily stopping the first conveying roller on the upstream side and operating only the second conveying roller on the downstream side in the sheet conveying direction, a predetermined value is set between the preceding product and the succeeding product after cutting. It is possible to switch to an interval adjustment mode that ensures the above discharge interval.

In addition to the above contents, the present invention can preferably have the following configuration.
(A) In the interval adjustment mode, the discharge interval is adjusted by adjusting the stop time of the first conveyance roller on the upstream side of the sheet conveyance.

(B) The predetermined value of the discharge interval is such a size that the preceding product and the succeeding product do not collide when the product is discharged to the paper receiving portion.

(C) When a plurality of cut areas are set on each sheet, the continuous cutting mode and the interval adjustment mode are selectively applied to each cut area.

(D) Control is performed so that the predetermined value of the discharge interval increases as the transport speed of the first and second transport rollers increases.

(E) During the operation of the cutting mechanism, the first and second transport rollers are controlled so as to always stop.

(1) According to the present invention, when the cutting width between the preceding product and the succeeding product on the paper is small (short), the discharge interval between the two products is widened by the interval adjustment mode, and each product is Therefore, it is possible to prevent the preceding product and the succeeding product from colliding with each other and the succeeding product from entering the lower side of the preceding product. Accordingly, it is possible to prevent the paper jam and to stack the products on the paper receiving portion in order and in a state where the product edges are arranged in an orderly manner.

  On the other hand, when the cutting width between the preceding product and the succeeding product on the paper is sufficiently large (long), the continuous cutting mode enables efficient cutting and discharging without wasting time.

(2) According to the configuration (a), the discharge interval in the interval adjustment mode can be easily adjusted.

(3) According to the configuration (b), it is possible to reliably prevent the collision between the preceding product and the succeeding product.

(4) According to the configuration (c), the continuous cutting mode and the interval adjustment mode are switched according to the cutting width of each cutting area even if a plurality of cutting areas having different sizes exist on one sheet. Therefore, it is possible to reliably prevent product collisions for each product.

(5) Generally, as the transport speed increases, the possibility of collision between the preceding product and the succeeding product increases accordingly, but according to the configuration (d), the discharge interval is increased as the transport speed increases. Therefore, it is possible to reliably prevent collisions between products even during high-speed conveyance.

(6) According to the configuration (e), it is possible to cut the paper at a clean and accurate position during the cutting process.

It is a model longitudinal cross-sectional view of the paper processing apparatus which implements the control method which concerns on this invention. It is a perspective view of the cutting mechanism of FIG. It is an example of interval adjustment mode, and is a figure which shows term charts, such as a conveyance roller. It is a section schematic diagram showing the initial cutting process in the above-mentioned example of interval adjustment mode. FIG. 5 is a schematic cross-sectional view illustrating an intermediate cutting process subsequent to FIG. 4. FIG. 6 is a schematic cross-sectional view showing a late cutting process subsequent to FIG. 5. It is an example of continuous cutting mode, and is a figure which shows term charts, such as a conveyance roller. It is a top view which shows an example of the product arrangement pattern of a paper. It is a top view which shows another example of the product arrangement pattern of a paper. It is a top view which shows another example of the product arrangement pattern of a paper. It is a top view which shows another example of the product arrangement pattern of a paper. It is another example of interval adjustment mode, and is a figure which shows term charts, such as a conveyance roller. FIG. 13 is a schematic cross-sectional view showing an initial cutting process in the example of the interval adjustment mode of FIG. 12. FIG. 14 is a schematic cross-sectional view illustrating an intermediate cutting process subsequent to FIG. 13. FIG. 15 is a schematic cross-sectional view showing a late cutting process subsequent to FIG. 14. It is another example of the interval adjustment mode, and is a diagram illustrating a term chart of a conveyance roller and the like. FIG. 17 is a schematic cross-sectional view showing an initial cutting process in the example of the interval adjustment mode shown in FIG. 16. FIG. 18 is a schematic cross-sectional view illustrating an intermediate cutting process subsequent to FIG. 17. FIG. 19 is a schematic cross-sectional view showing a late cutting process following FIG. 18. It is a section schematic diagram showing operation of a conventional example.

[Configuration of paper processing equipment]
FIG. 1 is a schematic longitudinal sectional view of a sheet processing apparatus that implements a control method according to the present invention. In FIG. 1, the paper processing apparatus includes a paper receiver 2 at the downstream end in the paper transport direction F of the apparatus main body 1 and a paper feed unit 3 at the upstream end in the paper transport direction F. A substantially horizontal conveyance path 5 is formed between 3 and the paper receiver 2. In the middle of the transport path 5, a plurality of transport roller pairs 9, 10, 11, 12, and the like are arranged at intervals in the paper transport direction F, and between each transport roller pair 9, 10, 11, 12, A slit forming mechanism 30, a folding mold forming mechanism 31, and a cutting mechanism 32 are arranged in this order from the upstream side in the paper transport direction F.

  Each of the transport roller pairs 9, 10, 11, and 12 includes a pair of upper and lower transport rollers 9A, 9B, 10A, 10B, 11A, 11B, 12A, and 12B. The lower conveyance rollers 9B, 10B, 11B, and 12B are drive-side rollers, and are respectively connected to the roller driving units 19, 20, 21, and 22 via a power transmission mechanism. , 20, 21 and 22 rotate in the direction of the arrow independently of each other. As a result, the paper P is transported in the transport direction F while being sandwiched from above and below. Each of the drive-side transport rollers 9B, 10B, 11B, and 12B is made of urethane and generates a large transport force due to friction. On the other hand, each of the driven rollers 9A, 10A, 11A, and 12A is made of a soft material such as a sponge so as not to damage the surface of the paper.

  Each of the slit forming mechanism 30, the folding mold forming mechanism 31, and the cutting mechanism 32 is configured as a detachable unit, and is configured to be detachable at a desired position in the apparatus main body 1 by a cassette method. Therefore, the arrangement order of the mechanisms 30, 31, 32 can be changed or other mechanisms (such as a chamfering mechanism) can be mounted according to the type of processing.

  In the embodiment, the slit forming mechanism 30 has four unit portions arranged in the paper transport direction F, and each unit portion has a pair of rotary blades composed of upper and lower rotary blades 30A and 30B in the transport width direction. Two sets are arranged at intervals. The lower rotary blade 30B is connected to a rotary blade drive unit 15 such as a motor via a power transmission mechanism. That is, the lower rotary blades 30 </ b> B are rotated by the driving force of the rotary blade driving unit 15, whereby slits are formed on the paper P in parallel with the paper transport direction F. In addition, the space | interval of the conveyance width direction of each said rotary blade pair can be changed arbitrarily.

  As described above, the slit forming mechanism 30 is composed of four unit portions arranged in the paper transport direction F, so that the upper and lower transport rollers 9A and 9B for the slit forming mechanism are also provided between the unit portions. Has been placed.

  The folding mold forming mechanism 31 includes a lower mold 31B having an upper end concave portion and an upper mold 31A having a lower end convex portion that fits into the concave portion. The upper mold 31A is attached to the mold driving unit 16 such as a motor. It is connected via a power transmission mechanism. That is, the upper die 31 </ b> A is lowered by the driving force of the die driving unit 16, thereby forming a fold in the direction perpendicular to the paper transport direction F with respect to the paper P.

  The cutting mechanism 32 is composed of a lower fixed blade 32B and an upper movable blade 32A extending in the paper conveyance width direction. The upper movable blade 32A is connected to a cutting drive unit 17 such as a motor via a power transmission mechanism. It is connected to.

  Each roller drive unit 19, 20, 21, 22, the rotary blade drive unit 15, the mold drive unit 16, and the cutting drive unit 17 are electrically connected to a control unit 25 built in the apparatus main body 1, and the control is performed. An operation unit (operation panel or the like) 26 for inputting and displaying various work settings is electrically connected to the unit 25. In addition, a scrap box 27 that is long in the paper transport direction F is disposed across the mechanisms 30, 31, and 32 at the lower end of the apparatus main body 1.

  FIG. 2 shows an example of the cutting mechanism 32. The lower fixed blade 32B is arranged substantially horizontally so as to extend in a direction orthogonal to the conveying direction F, and the upper movable blade 32A has a cutting edge portion with respect to the horizontal. It inclines so that it becomes low as it goes to blade edge part 32Ab from 32Aa, and it moves to the up-down direction along the upper side guide body 33 arrange | positioned in the upstream of the paper conveyance direction F. As shown in FIG.

  The blade base portion 32Ab of the upper movable blade 32A is linked to the cutting drive unit (drive motor) 22 via the parallel link mechanism 36, the crank mechanism 37, and the gear transmission mechanism 38, so that the cutting drive unit 22 is driven. The upper movable blade 32A is translated in the vertical direction while maintaining an inclined state by the power.

[Product arrangement pattern of paper]
8 to 11 show various product arrangement patterns of the paper P to be cut. In the product arrangement pattern shown in FIG. 8, the products (product areas) Q1 to Q4 are arranged in four rows in the paper conveyance direction F, and the products (product areas) Q1 to Q4 are arranged in four rows in the paper conveyance width direction W. ing. In the case of this product arrangement, a total of 16 products Q1 are formed by eight slit lines S parallel to the paper transport direction F and eight cutting lines E parallel to the paper transport width direction W orthogonal to the paper transport direction F. Through Q4 will be cut out.

  A cut region (so-called dove forming region) X1 having a cut width D in the paper transport direction F is set between products adjacent to each other in the paper transport direction F, that is, between the products Q1Q2, the products Q2Q3, and the products Q3Q4. On the other hand, a cut region X2 having a cut width H in the paper transport width direction W is set between adjacent products in the paper transport width direction W, that is, between the products Q1Q1, between the products Q2Q2, between the products Q3Q3, and between the products Q4Q4. Has been. Cut areas X1 and X2 are also formed at the outer peripheral edge of the paper. The cut width D of the cut region X1 in the paper transport direction F is set to 10 mm.

  In the product arrangement pattern of the paper P shown in FIG. 9, the products Q1 to Q3 are arranged in three rows in the paper conveyance direction F, and the products Q1 to Q3 are arranged in four rows in the paper conveyance width direction W. In the case of this product arrangement, a total of 12 products Q1 to Q3 are cut out by eight slit lines S parallel to the paper conveyance direction F and six cutting lines E parallel to the paper conveyance width direction W. .

  Between the products adjacent in the paper conveyance direction F, that is, between the products Q1Q2, between the products Q2Q3, and between the products adjacent in the paper conveyance width direction W, that is, between the products Q1Q1, between the products Q2Q2, and between the products Q3Q3, respectively, the cut region X1. , X2 are set. The cut width D of the cut region X1 in the paper transport direction F is set to 20 mm.

  The product arrangement pattern of the paper P shown in FIG. 10 has products Q1 to Q3 arranged in three rows in the paper conveyance direction F and products Q1 to Q3 arranged in four rows in the paper conveyance width direction W, as in FIG. ing. The difference from FIG. 9 is that the cut width D of the cut region X1 in the paper conveyance direction F is set to 30 mm. Except for the cutting width D, the arrangement pattern is the same as in FIG.

  In the product arrangement pattern of the paper P shown in FIG. 11, the products Q1 to Q5 are arranged in five rows in the paper conveyance direction F, and the products Q1 to Q5 are arranged in four rows in the paper conveyance width direction W.

  A cut region X2 is set between adjacent products in the paper conveyance width direction W, that is, between the products Q1Q1, between the products Q2Q2, between the products Q3Q3, between the products Q4Q4, and between the products Q5Q5, but is adjacent to the paper conveyance direction F. The cut width D of the cut region is set to 0 between products, that is, between products Q1Q2, between products Q2Q3, between products Q3Q4, and between products Q4Q5. That is, there is substantially no ablation region.

(Contents of control by the control unit 25)
In the storage unit of the control unit 25 in FIG. 1, regarding the control of the cutting process, the cutting mechanism 32 is activated and stopped, and the upstream side of the cutting mechanism 32 in the sheet conveyance direction F (hereinafter simply referred to as “sheet conveyance upstream side”). ) And the downstream and downstream sides of the paper conveyance direction F (hereinafter simply referred to as “paper conveyance downstream side”), and the operation and stop of each pair of conveyance rollers 11 and 12, a paper receiving portion is formed by a discharge interval substantially corresponding only to the cutting width D. 2, a continuous cutting mode for discharging the product and an interval adjustment mode for discharging the product to the paper receiving unit 2 by increasing the discharge interval to an interval (D + G) larger than the cutting width D are programmed. The above two modes are switched according to the size of the cutting width D input and set at 26. For convenience of explanation, the conveyance roller pair 11 on the upstream side of the sheet conveyance of the cutting mechanism 32 is referred to as a “first conveyance roller pair”, and the conveyance roller pair 12 on the downstream side of the conveyance of the cutting mechanism 32 is referred to as “second conveyance roller”. This is referred to as a “conveying roller pair”.

  In this embodiment, the reference value of the cutting width D for switching between the continuous cutting mode and the interval adjustment mode is set to 30 mm, and when the cutting width D input by the operation unit 26 is 30 mm or more, the continuous cutting mode is set. When the cutting width input by the operation unit 26 is less than 0 to 30 mm, it is stored in the control unit 25 so as to execute the interval adjustment mode.

  3 and 7 show time charts of operations of the cutting mechanism 32 and the first and second transport roller pairs 11 and 12 when the interval adjustment mode and the continuous cutting mode are executed, respectively. The horizontal axis is time. 3 and 7, the upper stage shows ON / OFF of the first transport roller pair 11, the middle stage shows ON / OFF of the cutting mechanism 32, and the lower stage shows ON / OFF of the second transport roller pair 12. ing. Time (section) Td is a cut region forming time for securing the cut width D, and times Tc1 and Tc2 are actual cutting times during which the cutting mechanism 32 is actually operating.

  In the continuous cutting mode shown in FIG. 7, only the actual cutting times Tc1 and Tc2 are secured at both ends before and after the cut region forming time Td. At each actual cutting time Tc1, Tc2, the first and second transport roller pairs 11, 12 are both stopped, and at the cutting region forming time Td and other sheet feeding times, the first and second transport roller pairs 11, 12 are used. Are programmed to be driven synchronously.

  On the other hand, in the interval adjustment mode shown in FIG. 3, the interval adjustment time Tg is ensured immediately after the front actual cutting time Tc1, and at this interval adjustment time Tg, the first transport roller pair 11 stops, Only two conveying roller pairs 12 are programmed to operate. As a result, as shown in FIGS. 5 and 6, at least a predetermined value (for example, 30 mm) at which the preceding product Q1 and the succeeding product Q2 do not collide is secured as the discharge interval (D + G) at the time of product discharge. The actual cutting times Tc1 and Tc2 are, for example, 0.1 to 0.3 seconds, and the conveyance speed by the first and second conveyance roller pairs 11 and 12 is 700 m / s at the maximum.

  The interval adjustment time Tg is changed and adjusted according to the size of the cutting width D in the range of 0 to less than 30 mm. That is, when the ablation width D is less than 0 to 30 mm, the interval adjustment time Tg is increased as the ablation width D becomes smaller. Finally, the discharge interval (G + D) as shown in FIG. 5 and FIG. It is controlled to be equal to or greater than the value (30 mm).

  Further, the predetermined value of the discharge interval (D + G) is preferably changed depending on the conveyance speed, and in this case, the discharge interval (D + G) is set to increase as the conveyance speed increases.

[Outline of work of paper processing equipment]
In FIG. 1, a plurality of sheets P are stacked on the tray of the sheet feeding unit 3, and the sheets P are supplied to the transport path 5 one by one from the lower end by a sheet feeding mechanism (not shown).

  The paper P fed to the slit forming mechanism 30 by the transport roller pair 9 disposed on the most upstream side of the paper transport is sequentially slit in parallel with the paper transport direction F by a plurality of pairs of rotary blades (slit line in FIG. 8). S) is formed.

  Subsequently, the sheet P sent to the folding mold forming mechanism 31 by the transport roller pair 10 passes through the folding mold forming mechanism 31 that is not used this time, and is then moved into the cutting mechanism 32 by the next first transport roller pair 11. Is sent to.

  As will be described in detail later in the cutting mechanism 32, when each cutting line E (see FIGS. 8 to 11) is sent to a predetermined cutting position, the paper P is temporarily stopped and the upper movable blade 32A is lowered. Thus, the cutting line E is cut in the paper conveyance width direction W perpendicular to the paper conveyance direction F. Then, the finally cut products are sequentially stacked on the paper receiving unit 2 from below.

[Control in the cutting process]
In order to simplify the explanation, the paper conveyance direction F will be expressed as the front or front side and the direction opposite to the paper conveyance direction F will be expressed as the rear or rear side according to each explanation part.

(1) The case of processing the sheet having the product arrangement pattern shown in FIG. 8 will be described.
First, as a pre-process, the position of each cutting line E corresponding to the product arrangement pattern is input. For example, in FIG. 8, the distance from the front edge of the sheet (downstream edge in the sheet conveyance direction F) P0 to each cutting line E is input to the operation unit 26, and the distance between any cutting lines E becomes the cutting width D. Specify whether or not.

  In the control unit 25, on / off switching of the first and second transport roller pairs 11, 12 and on / off switching of the cutting mechanism 32 are performed based on the input distance from the front edge P0 of the sheet to each cutting line E and each cutting width D. Is sent to the roller drive units 21 and 22 and the cutting drive unit 17. In the above calculation and processing steps, the input cutting widths D in FIG. 8 are all 10 mm and less than the reference value 30 mm, so the interval adjustment mode is selected. Thereby, a drive signal is sent based on the program including the interval adjustment time Tg shown in FIG. The interval adjustment time Tg is set so that the discharge interval (D + G) between the products Q1Q2 shown in FIG. 5 is at least a predetermined value of 30 mm or more by the total time of the interval adjustment time Tg and the ablation region formation time Td. Is done. That is, the adjustment interval G is set to 20 mm.

  4 to 6 sequentially show work steps when the sheet P having the product arrangement pattern shown in FIG. 8 is processed in the interval adjustment mode based on the time chart shown in FIG.

  FIG. 4 shows an initial cutting process in which the front end of the cutting area X1 is actually cut. When the cutting line E at the front end of the cutting area X1 moves to a predetermined cutting position of the cutting mechanism 32, the first and second transport rollers The pair 11 and 12 are stopped, and the sheet P is cut by the upper movable blade 32A of the cutting mechanism 32 being lowered in this stopped state.

  FIG. 5 shows an intermediate cutting process for forming the cut region. The first conveying roller pair 11 is stopped and only the second conveying roller pair 12 is rotated, so that the preceding product (for example, Q1) is rotated. An adjustment interval G (20 mm) is formed between the end and the front end of the cut region X1. After securing the adjustment interval G, the first and second transport roller pairs 11 and 12 are synchronously driven again.

  FIG. 6 shows a late cutting process in which the rear end of the cut region X1 is actually cut. When the cutting line E at the rear end of the cut region X1 moves to a predetermined cutting position of the cutting mechanism 32, the first and second cutting processes are performed. The conveyance roller pairs 11 and 12 are stopped, and the sheet P is cut by the upper movable blade 32A of the cutting mechanism 32 being lowered in this stopped state. As a result, the excision region X1 becomes an independent excision piece (so-called dove) and falls into the waste box 27 below. Thereafter, the first and second transport roller pairs 11 and 12 are synchronously driven again. At this time, the rear end of the preceding product Q1 and the front end of the succeeding product Q2 are separated by at least a predetermined discharge interval (D + G) of 30 mm. In this state, the preceding product Q1 is discharged to the paper receiving portion 2. Is done.

  Therefore, even when the products Q1 and Q2 are sequentially cut, a discharge interval (D + G) of 30 mm or more is always ensured between the rear end of the preceding product and the front end of the succeeding product. And the following product can be prevented from colliding with each other, or the succeeding product can enter the lower side of the preceding product, and the order of integration is disturbed in an orderly manner on the paper receiving portion 2. Not loaded.

(2) The case of processing the sheet having the product arrangement pattern shown in FIG. 10 will be described.
As in the case of FIG. 8, as a pre-process, the distance from the front edge P0 of the sheet to each cutting line E is input according to the product arrangement pattern. However, since the cut width D is the reference value 30 mm, the control unit 25 As shown in FIG. 7, a drive signal is issued based on a program in a continuous cutting mode with no interval adjustment time (Tg).

  Therefore, in the cutting operation in the cutting mechanism 32, continuous cutting is performed without securing the interval adjustment time Tg. Since the cutting width D is 30 mm, the product can be discharged and stacked on the paper receiver 2 without colliding the preceding product and the succeeding product without securing the interval adjustment time in the previous period. The work efficiency can be maintained by not securing the interval adjustment time in the previous period.

(3) A case where the paper having the product arrangement pattern shown in FIGS. 9 and 11 is processed will be described.
Similar to the product arrangement pattern of FIG. 8, since the cutting width D is less than or equal to the reference value 30 mm or 0, the interval adjustment time Tg is added in the same manner as the operations described in FIG. 3 and FIGS. , Cut and discharged.

  However, in the case of the paper P in FIGS. 9 and 11, the interval adjustment time Tg having a value different from that in FIG. 10 is set according to the size of the cut width D. That is, in the product arrangement pattern of FIG. 9, since the cutting width D is 20 mm, the interval adjustment time Tg is set so that the adjustment interval G (see FIG. 5) based on the interval adjustment time Tg is 10 mm. On the other hand, in the product arrangement pattern of FIG. 11, since the cutting width D is 0 mm, the interval adjustment time Tg is set so that the adjustment interval G (see FIG. 5) based on the interval adjustment time Tg is 30 mm.

[Effect of the embodiment]
According to the present embodiment, when the cutting width D between the preceding product and the following product on the paper P is less than the reference value 30 mm, the discharge interval (D + G) wider than the cutting width D is set by the interval adjustment mode. Since each product is discharged, it is possible to prevent the preceding product and the succeeding product from colliding with each other and the succeeding product from entering the lower side of the preceding product. Thereby, products can be stacked on the paper receiving portion 2 in order and with the product edges aligned.

  On the other hand, when the cutting width D between the preceding product and the succeeding product is a reference value of 30 mm or more, the continuous adjustment mode allows efficient cutting and discharging without wasteful time. And the following product do not collide, and the following product does not enter the lower side of the preceding product.

(1) In the interval adjustment mode, the discharge interval (D + G) can be easily changed by adjusting the stop time (interval adjustment time Tg) of the first conveyance roller pair 11 on the upstream side of the sheet conveyance.

(2) The predetermined value 30 mm of the discharge interval (D + G) is such a size that the preceding product and the succeeding product do not collide when the product is discharged to the paper receiving unit 2. Collisions with the product can be reliably prevented.

(3) Since the first and second transport roller pairs 11 and 12 are controlled to always stop during the operation of the cutting mechanism 32, the paper is cut at a clean and accurate position during the cutting process. Can do. In particular, when a sheet is transferred between the first conveying roller pair 11 and the second conveying roller pair 12, it is possible to prevent the occurrence of wrinkles due to a difference in peripheral speed during the acceleration of each conveying roller pair, and to simplify the process. Can be managed by control.

[Another example of interval adjustment mode]
12 to 15 show another example of the interval adjustment mode, and correspond to FIGS. 3 to 6.

  As shown in FIG. 12, in the interval adjustment mode, the interval adjustment time Tg is set immediately after the cutting time Tc2 at the rear end of the ablation region formation time Td. Other configurations are the same as those in FIG.

  Therefore, the front end of the ablation region X1 is cut as shown in FIG. 13, and then the rear end of the ablation region X1 is cut as shown in FIG. 14, and immediately thereafter, an adjustment interval G is formed as shown in FIG.

[Another example of interval adjustment mode]
16 to 19 show still another example of the interval adjustment mode, and correspond to FIGS. 3 to 6.

  As shown in FIG. 16, in the interval adjustment mode, the interval adjustment time Tg is set to the time when a certain sheet feeding time Tf has passed after the cutting time Tc2 at the rear end of the cut region formation time Td. Other configurations are the same as those in FIG.

  Accordingly, the front end of the cut region X1 is cut as shown in FIG. 17, and then the rear end of the cut region X1 is cut as shown in FIG. 18, and then the paper is fed by a certain distance as shown in FIG. When the product Q2 is sandwiched between the second conveying roller pair 12, the interval adjustment operation is finished.

[Other embodiments]
(1) In each of the product arrangement patterns of FIGS. 8 to 11, the plurality of cut widths D in one sheet P are all set to the same value, but different sizes are also used in one sheet. When the cutting width D is set, the continuous cutting mode and the interval adjustment mode are switched for each cutting region X1. According to this, since the continuous cutting mode and the interval adjustment mode are switched according to the cutting width of each cutting region, it is possible to reliably prevent product collisions for each product.

(2) It can also be controlled so that the reference value of the cutting width D increases as the conveyance speed of the first and second conveyance roller pairs increases. According to this, even if the conveyance speed increases and the occurrence rate of the collision between the front and rear products increases, the collision between the front and rear products can be reliably prevented.

(3) In the above embodiment, cutting in the direction orthogonal to the paper transport direction and slit formation parallel to the transport direction are performed, but only the cutting or a folding process by a folding mold forming mechanism is added. The present invention can also be applied to processing. In this case, the cutting mechanism is preferably arranged in the final process. By the way, if a fold mold is formed after cutting, the paper will be scattered, making it difficult to form a crease accurately.

2 Paper receiving part 11, 12 Conveying roller pair 17 Cutting drive part 21, 22 Roller drive part (drive mechanism)
25 Control unit 30 Slit forming mechanism 32 Cutting mechanism P Paper Q1, Q2, Q3, Q4, Q5 Product D Cutting width X1 Cutting region Td Cutting region forming time Tg Interval adjustment time T + D Discharging interval

Claims (6)

A cutting mechanism for cutting paper in a direction orthogonal to the paper transport direction, first and second transport rollers disposed on the upstream and downstream sides of the paper transport of the cutting mechanism, and the first and second transport rollers A drive mechanism capable of operating the transport rollers independently; a control unit for controlling the drive mechanism; and a paper receiving unit disposed on the downstream side of the second transport roller on the downstream side of the transport of the paper. A sheet processing apparatus control method, comprising: cutting the sheets into a plurality of products by the cutting mechanism;
When the cutting width in the paper transport direction of the cutting region between the preceding product and the succeeding product adjacent in the paper transport direction is equal to or larger than the reference value, the first and second transport rollers are always operated synchronously. Continuous cutting mode for continuous cutting,
When the cutting width is 0 to less than the reference value, by temporarily stopping the first transport roller on the upstream side in the paper transport direction and operating only the second transport roller on the downstream side in the paper transport direction, A control method for a sheet processing apparatus, which is switchable to an interval adjustment mode in which a discharge interval of a predetermined value or more is secured between the preceding product and the following product after cutting.   The method of controlling a sheet processing apparatus according to claim 1, wherein in the interval adjustment mode, the size of the discharge interval is adjusted by adjusting a stop time of the first conveyance roller on the upstream side of the sheet conveyance.   3. The sheet processing apparatus according to claim 1, wherein the predetermined value of the discharge interval is a size in which the preceding product and the succeeding product do not collide when the product is discharged to the paper receiving unit. Control method.   The continuous cutting mode and the interval adjustment mode are selectively applied to each cut area when a plurality of cut areas are set on each sheet. Control method of the paper processing apparatus as described in one.   The control of the sheet processing apparatus according to any one of claims 1 to 4, wherein the control is performed so that the predetermined value of the discharge interval increases with an increase in the conveyance speed of the first and second conveyance rollers. Method   6. The method for controlling a sheet processing apparatus according to claim 1, wherein the first and second transport rollers are controlled to always stop during operation of the cutting mechanism. 7.

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