JP4976362B2 - Sheet workpiece feeding device and sheet workpiece feeding method - Google Patents

Description

  The present invention relates to a sheet workpiece feeding device and a sheet workpiece feeding method for sequentially feeding sheet workpieces to a printing unit in a box making machine.

  A box making machine that manufactures a corrugated cardboard box or the like from a sheet-like workpiece is a composite device composed of a plurality of devices that share a number of processes until the sheet-like workpiece is formed into a box. This box making machine includes a printing unit that prints illustrations and characters on the surface of a sheet-like workpiece, a folding device that folds into a predetermined shape, and the like. A sheet-like workpiece feeding device for sequentially feeding the workpieces is arranged. Usually, this apparatus is continuously arranged via a feeder roller integrated with the sheet-like work feeding device, and the sheet-like work fed from the sheet-like work feeding device is transferred to the printing unit via the feeder roller and the conveying unit. It will be delivered sequentially. In the printing unit, a printing plate having a predetermined thickness is arranged on the outer periphery of the printing roller.

  Examples of the sheet-like workpiece feeding device include Patent Documents 1 and 2. As shown in FIGS. 13 and 14, the sheet-like workpiece feeding device S <b> 11 of Patent Documents 1 and 2 includes a mounting table D <b> 4 for stacking and placing the sheet-like workpieces W, and the stacked sheet-like workpieces W. Among them, the lowermost sheet-like work W1 is fed up and down in conjunction with the rotation of the paper feed roller D12 that feeds the sheet-like work W1 to the printing unit S12, and the contact between the paper feed roller D12 and the lowermost sheet-like work W1 is separated. Great D11 to adjust. The sheet-like workpiece W sent out from this sending-out device is sent to the next printing unit S12.

  In the sheet-like workpiece feeding device S11, the sheet feeding roller D12 and the great D11 are structured to obtain driving force from the same driving means. That is, a plurality of gears are interposed from the drive shaft D52 to obtain rotational driving of the paper feed roller D12, and cam mechanisms (two cams are used in an overlapping manner) 91 and 92 attached to the drive shaft D52. This is a structure that obtains the lift drive of the great D11. As a result, the feed roller D12 and the great D11 are driven by repeating a certain cycle while interlocking with each other (FIG. 13). Here, the paper feed roller D12 performs a rotational motion that repeats acceleration, constant speed, and deceleration from a constant speed drive shaft D52 by interposing the plurality of gears (not shown).

An example of a box making machine that continuously performs sheet feeding, printing, and box making processes is a sheet making machine according to Patent Document 3. This Patent Document 3 describes a correction method for correcting a shift amount of a sheet-like workpiece with respect to a printing roller when the printing plate thickness of the printing roller of the box making machine is changed.
US Pat. No. 5,184,811 US Pat. No. 6,824,130 JP-A-2005-14369

  In the sheet-like workpiece feeding device S11 according to Patent Documents 1 and 2, the sheet feeding roller D12 and the great D11 are structured to obtain driving force from one driving means M1 (FIG. 14). Further, in the conventional apparatus, as shown in FIG. 14, not only the paper feeding roller D12 and the great D11 but also the feeder roller F3 of the feeding device S11 and the printing roller R1 of the printing unit S12 similarly obtain driving force from the driving means M1. . The feed roller D12 and the great roller D11 drive a gear mechanism (gear box) and a cam mechanism (using two cams overlapped) 91 and 92 attached to a drive shaft D52 that obtains a driving force from the driving means M1. Thus, the rotation driving of the paper feed roller D12 and the vertical driving of the great D11 are obtained via a connecting mechanism (a connecting mechanism using members such as 93, 95, 96, 98, and 99 on the great D11 side).

  However, first, the sheet-like workpiece feeding device S11 that is driven by repeating a certain cycle while interlocking with each other can only deal with a printing plate Ra having a specific thickness, and can deal with printing plates having an arbitrary thickness. There is a problem that you can not. This is because, in the feeding device S11 of Patent Documents 1 and 2, the paper feed roller D12 and the great D11 obtain their respective driving forces from the same drive shaft D52 via a gear or cam, so that a predetermined drive shaft is selected. This is because the rotation cycle of the paper feed roller D12 and the raising / lowering cycle of the great D11 are determined so as to match the rotation amount. Specifically, in the printing unit S12, the diameter of the printing roller R1 is determined by the thickness of the printing plate Ra, and the circumferential speed of the printing roller R1 when the printing roller R1 rotates at a constant speed is V1, and the printing roller R1 is equal to one. Assuming that the time required for the rotation is T1, the sheet feeding roller D12 and the great D11 are set to rotate and lift so that one sheet-like workpiece can be supplied each time the printing roller R1 rotates once. . In the paper feed roller D12, the peripheral speed during constant speed rotation is set to V1, and the cycle of repeating acceleration, constant speed, and deceleration is set to T1. The great D11 is set so that the ascending / descending cycle is T1. The feed roller D12 and the great D11 are connected to the same drive shaft D52 through gears or cams as described above. Only when the drive shaft D52 rotates at a predetermined rotational speed, the peripheral speed when the paper feed roller D12 rotates at a constant speed is V1, and the period is T1. The same applies to the great D11.

  On the other hand, when the thickness of the printing plate Ra is changed, for example, when a thin printing plate is used, the diameter of the printing roller R1 becomes small, so the period of one rotation remains T1, but the peripheral speed is V2 which is slower than V1. Become. In accordance with this, the peripheral speed during constant speed rotation of the paper feed roller D12 must be reduced. In order to reduce the peripheral speed, the rotational speed of the drive shaft D52 may be decreased. However, if the rotational speed of the drive shaft D52 is decreased, the cycle of acceleration / constant speed / deceleration of the feed roller D12 becomes longer than T1. Further, the period of raising and lowering the great D11 is also longer than T1 because the rotational speed of the drive shaft D52 is reduced. For this reason, when the timing at which the sheet-like workpiece W is supplied from the sheet-like workpiece feeding device S11 is delayed and the sheet-like workpiece W reaches below the printing roller R1, the position of the printing plate Ra on the printing roller R1 and the sheet-like workpiece are sent. There arises a problem that the range (printing position) of the work W to be printed is gradually shifted. In order to prevent this problem, a method of adjusting by slipping the feeder roller F3 is considered. However, it is difficult to say that such a method can cope with printing misalignment by a precise method.

  The box making machine according to the above-mentioned patent document 3 states that “the control means controls the conveyance conveyor according to the outer diameter of the printing cylinder including the printing plate thickness when the printing plate thickness of the printing cylinder (printing roller) is changed. The correction is made so that the conveyance speed matches the peripheral speed of the printing cylinder including the thickness of the printing plate (Claim 1). " In other words, “when the thickness of the printing plate is changed from the standard thickness to a thin printing plate, the conveyance speed of the conveyance conveyor is reduced in accordance with the peripheral speed of the thin printing plate (paragraph 0040)”. Here, in the box making machine according to Patent Document 3 described above, “the paper feeding unit is configured to kick out the corrugated cardboard sheet by a kicker reciprocating by a crank lever mechanism, and to feed the kicked sheet out by a feed roll. (Paragraph 0023) ”, and is considered to be a mechanical device that periodically ejects a corrugated cardboard sheet and delivers the corrugated cardboard sheet from a feed roll that always rotates at the same peripheral speed to the conveyor. It is done. Therefore, the rotation speed of the feed roll, the conveyance speed of the conveyor, and the rotation speed of the printing cylinder (printing cylinder) are set to meet the conditions of the standard printing plate in the initial setting, and the printing plate is changed to a thin printing plate. Sometimes, the peripheral speed of the printing cylinder (printing cylinder) becomes slow, so correction for slowing the transport speed of the transport conveyor must be performed. The conveyance speed of the corrugated cardboard sheet is ideally a constant speed from the feeding device to the printing unit, but the box making machine according to Patent Document 3 conveys the corrugated cardboard sheet to the corrugated cardboard sheet fed at a constant speed. Since the sheet conveyance speed is corrected by the printing unit in the middle of the belt, when the sheet is replaced with a printing plate having a thickness different from the standard, a slip corresponding to the difference in conveyance speed of the corrugated cardboard sheet occurs. Such a method may cause printing misalignment.

  Secondly, in the apparatuses according to Patent Documents 1 and 2, there is a possibility that other sheet-like workpieces W other than the sheet-like workpiece W1 being sent out may be damaged. That is, there is a problem that the sheet-like workpiece W2 is damaged when the second sheet-like workpiece W2 from the lowermost layer immediately after the lowermost sheet-like workpiece W1 is sent out comes into contact with the paper feed roller D12. is there. A suction means D6 for bringing the sheet-like workpiece W1 and the paper feed roller D12 into contact is provided below the paper feed roller D12 and the great D11. When the first sheet-like workpiece W1 is being sent out, the second sheet-like workpiece W2 is displaced from the sheet-like workpiece W1, and a part of the workpiece is floated. It is pulled and comes into contact with the paper feed roller D12 located at the rear, and is damaged by friction. This is a structure in which the devices according to Patent Documents 1 and 2 obtain the drive of the plurality of paper feed rollers D12 from the same drive shaft D52. Therefore, among the plurality of paper feed rollers D12, the rear paper feed is performed. This is because only the roller D12 cannot be rotated or stopped. Further, the second sheet-like workpiece W2 obtained with the propulsive force from the rear paper feed roller D12 moves toward the printing unit, and enters the sheet-like workpiece discharge port (the gap d between the front gauge D7 and the mounting table D4). The sheet-like workpiece W2 is damaged by forcibly entering.

  Thirdly, when switching lots by order change, all the first lots are sent to the printing unit S12, and then the next lot is stacked on the mounting table D4. At this time, in particular, it is difficult to set the start position of the first lowermost sheet-like workpiece W1 at the time of changing the lot, and this has also caused a printing deviation due to the printing roller R1.

  Fourthly, in order to stop the feeding operation of the sheet-like workpiece W, an emergency stop means may be installed in the cam mechanism that raises and lowers the great D11. The emergency stop means is used to raise the great D11. The feeding of the sheet-like workpiece W is stopped by cutting off the contact between the sheet feeding roller D12 and the lowermost sheet-like workpiece W1. However, providing such an additional device complicates the structure and increases the manufacturing cost.

  Therefore, even if the diameter of the printing roller is changed due to the difference in the thickness of the printing plate, the object of the present invention is to prevent the damage of the sheet-like workpiece by adjusting the feeding speed and the feeding timing of the sheet-like workpiece correspondingly. Furthermore, another object of the present invention is to provide a sheet-like workpiece feeding device and a sheet-like workpiece feeding method for realizing accurate feeding by a feeding device for preventing printing misalignment in a printing unit.

The sheet-like workpiece feeding device according to the present invention is arranged for each of a plurality of sheet feeding rollers that feeds the lowermost sheet-like workpiece of the stacked sheet-like workpieces to the printing unit, and a drive shaft of these sheet feeding rollers. a first driving means for respectively rotationally driven the feed roller Te, separable Great for Therefore adjust the vertical movement of said paper feed roller and the lowermost sheet-like work, the lifting operation the Great 2 driving means, a feeder roller for delivering the fed sheet-like work to the printing roller of the printing unit, a third driving means for rotationally driving the feeder roller, and a control means for controlling these driving means. said first, second and third drive means are disposed independently, acceleration pattern of the paper feed roller is determined by said control means, The first on the basis of the serial acceleration pattern, characterized in that the phase synchronization control is performed in which the printing rollers of the printing unit and the second and third drive means are interlocked.

According to the present invention, in accordance with the change in peripheral speed due to the change of the diameter of the printing roller, and the rotation of the acceleration, constant velocity and deceleration of the feed roller, and a lifting of the Great that each set separately it can.
For example, the lowermost sheet-shaped workpiece of stacked sheet-shaped workpiece by driving only the feed roller, becomes possible as to accurately set the feed position. Further, by driving the feed roller, into contact with the front gauge lowering the front end side of the sheet-like workpiece, by setting the feed position of the sheet workpiece, the printing of the sheet workpiece It is configured to convey accurately to the unit .

The sheet-like workpiece feeding method of the present invention is arranged for each of a plurality of sheet feeding rollers that feeds the lowermost sheet-like workpiece of the stacked sheet-like workpieces to the printing unit, and the drive shafts of these sheet feeding rollers. A first driving means for rotating each of the paper feed rollers, a grate for adjusting the contact / separation of the paper feed roller and the lowermost sheet-like workpiece by the raising / lowering operation, and a second for raising / lowering the grate. Drive means, a feeder roller for delivering the fed sheet-like work to the printing roller of the printing unit, a third driving means for rotationally driving the feeder roller, and a control means for controlling these driving means. The sheet-like workpiece feeding device using the sheet-like workpiece feeding device in which the first, second and third driving means are independently arranged. The control means determines an acceleration pattern of the paper feed roller and interlocks the driving of the first, second and third driving means and the printing roller of the printing unit based on the acceleration pattern. Phase synchronization control is performed .

According to the present invention, for example, by stopping the driving of the sheet feeding roller released from contact with the lowermost sheet-like workpiece of the laminated sheet-like workpiece, the second lowermost layer of the conventional laminated sheet-like workpiece is It is possible to prevent a situation in which the second sheet-like workpiece is forcibly fed and damaged .
In addition, by delaying the timing of the great rise and setting the period of the great descent position to be longer, it is possible to give a feed amount of the sheet-like workpiece with a longer stroke, and to achieve stable feeding even for a long sheet-like workpiece Can do.

In the sheet-like workpiece feeding device according to the present invention, the printing unit includes a conveyance belt that conveys the sheet-like workpiece, and the most upstream conveyance roller among the conveyance rollers of the conveyance belt is a lower roller of the feeder roller. And the control means calculates an acceleration distance until the sheet-like workpiece reaches a conveyance speed based on the acceleration pattern, and each of the printing rollers of the printing unit is calculated from the acceleration distance. A phase angle corresponding to the position is set .

  According to the present invention, since the roller on the sheet-like workpiece feeding device side of the conveying belt that conveys the sheet-like workpiece also serves as the lower feeder roller, the sheet-like workpiece is conveyed from the feeder to the feeder roller and the belt. Delivery to the system is performed smoothly.

According to the present invention, the control means calculates an acceleration distance from the start of feeding of the sheet-shaped workpiece to a conveyance speed based on the acceleration pattern , and each of the printing rollers of the printing unit is calculated from the acceleration distance value. A phase angle corresponding to the position of is set.

The sheet-like workpiece feeding method according to the present invention includes a ruled line giving unit for giving a ruled line to the sheet-like workpiece, a slotter unit or a die cutter unit for making a predetermined cut in the sheet-like workpiece on the downstream side of the printing unit. Post-processing devices that need to be aligned are arranged, and the driving means of these post-processing devices are independent of the driving means of the sheet-like workpiece feeding device and the driving means of the printing roller of the printing unit It is an independent configuration, and the control means calculates an acceleration distance until the sheet-like workpiece reaches a conveyance speed based on the acceleration pattern, and the position of the post-processing device is calculated from the acceleration distance value. It is characterized in that phase alignment is performed by calculating a phase angle corresponding to.

In the sheet work feeding method according to the present invention, the driving means for driving the paper feed roller, the great, the feeder roller, the transport roller, and the printing roller are independent from each other, and each of the driving means is individually controlled by the control means. Therefore, it is possible to cope with specifications with different stamp thicknesses. The present invention further provides a printing roller that requires phase matching corresponding to the printing plate thickness when the printing plate thickness is changed, or a paper feed roller corresponding to the printing plate thickness for the post-processing apparatus. Using the acceleration distance obtained from the acceleration pattern, it is possible to calculate and set the phase angle according to the position of the printing roller or the post-processing device, so that whenever the printing plate thickness is changed, Even if the sheet-like work is actually sent out and fine adjustments are made so that there is no processing deviation (printing misalignment, etc.) of the printing roller or the post-processing device, even if the printing thickness is changed repeatedly It can respond instantly each time. In the present invention, for example, when the control unit determines the acceleration pattern of the paper feed roller when the printing plate thickness of the printing roller of the printing unit is changed, the acceleration pattern at a predetermined printing plate thickness is determined. Using the acceleration pattern as a reference, the acceleration pattern at the time of changing the stamp thickness is determined.

  According to the present invention, drive means for moving up and down the great, drive means for rotationally driving a plurality of paper feed rollers, and a drive means arranged separately from the drive means for the great, and control for controlling the drive thereof. Since the means is provided, acceleration / constant speed / deceleration rotation of the sheet feeding roller and elevation of the great can be set separately. Furthermore, the rate of acceleration / constant speed / deceleration of the paper feed roller and its cycle can be arbitrarily set, and the rate of descending / raising of the great can also be arbitrarily set. That is, a rapid acceleration characteristic and a gradual deceleration characteristic of the paper feed roller are given, and it is possible to change the timing such as delaying or increasing the timing of the great. As a result, adjustment according to the arbitrary thickness of the printing plate can be performed, and the sheet-like work can be continuously printed without shifting the feeding timing of the sheet-like work to the printing roller. The load when sending out is reduced, and the delivery timing is stabilized. In addition, even if the thickness and size vary depending on the type of the sheet-like workpiece, each sheet can be easily set up so that the second sheet-like workpiece from the bottom layer is not damaged. It is also possible to send out a workpiece. Further, the conveying means for conveying the sheet-like work is stretched over the feeder roller, and the sheet-like work is conveyed to the position of the printing roller of the printing unit at the peripheral speed of the feeder roller of the feeding device. It becomes possible to prevent. Even when the printing roller printing plate is changed from a standard printing plate to a printing plate with a different thickness, fine adjustment is performed after coarse adjustment is performed on the actual product as in the case of conventional box making machine timing adjustment. Without the hassle of repeating, it is possible to set the phase angle of the drive means of the post-processing device that requires setting of the initial position of the printing unit, die cutter unit, etc. It becomes possible.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(First embodiment)
The first embodiment of the present invention is an example in which the present invention is applied to a corrugated box making machine that performs printing on the surface of a sheet-like workpiece (corrugated cardboard sheet) W (FIGS. 1 and 2). . The box making machine has a paper feeding unit (sheet-like workpiece feeding device) S1 as an upstream side, followed by a printing unit (printing unit) S2, a box making unit (slotter unit, die cutter unit, folding unit, delivery unit) S3. They are connected in the order (not shown here). The sheet-like workpiece W that has undergone printing is grooved or ruled at the slotter, punched at the die cutter, such as hand holes or air holes, bent at the folding, and stacked at the delivery. Discharged. In addition, it is arbitrary to change the configuration of the box making unit S3 in order to realize processing according to the type and application of the sheet-like workpiece W (for example, by adding equipment other than the equipment described above, more complicated You may be able to do the right processing).

  The sheet-like workpiece feeding device (sheet feeding unit S1) has a housing called a mounting table 2 having left and right side walls 2c (left and right side surfaces 2c) erected with a certain machine width and a mounting surface 2b on the upper surface. It has a body shape configuration. A suction means Q is attached to the mounting table 2 below and also serves as a suction box for sucking the sheet-like workpiece W from below (FIGS. 3 and 4). In addition, a pair of upper and lower feeder rollers 10 (10 m, 10 j) are provided horizontally along the height of the upper surface of the mounting table 2 at the downstream end of the mounting table 2. The sheet-like workpieces W are set in a state of being stacked on the mounting surface 2b of the mounting table 2, and are sent downstream from the lower (lowermost layer) one by one. The fed sheet-like workpiece W is taken in between a pair of synchronously driven feeder rollers 10m and 10j, and maintains a predetermined conveyance speed, while the printing roller Rn of the printing unit S2 responds to printing of multiple colors. (N = 1, 2,...) And the pressure roller Rh.

  The sheet-like workpiece feeding device S1 is placed on the mounting table 2 for stacking and placing the sheet-like workpieces W, and the lowermost sheet-like workpiece W1 among the laminated sheet-like workpieces W is placed on the printing unit S2 side. A plurality of paper feed rollers 3 (3a, 3b, 3c, 3d) to be sent out, and a protruding amount with respect to the plurality of paper feed rollers 3 are adjusted by moving up and down to thereby provide a plurality of paper feed rollers 3 and a lowermost sheet-like work. And a great 4 that adjusts contact and separation with W1. Further, a front gauge 14 is disposed so as to stand vertically above the downstream side of the mounting table 2. The position of the front gauge 14 can be adjusted up and down, and the distance d between the lower end of the front gauge 14 and the mounting table 2 (mounting surface 2b) is adjusted according to the thickness of the sheet-like workpiece W (FIG. 1, FIG. FIG. 3).

  The mounting table 2 on which the sheet-like workpiece W is stacked has the sheet-like workpiece W stacked on the mounting surface 2b on the upper surface, and the opening 2a is provided on the mounting surface 2b. A plurality of paper feed rollers 3 and a great 4 are arranged. On one side surface 2c of the mounting table 2 having the housing structure, a servo motor M3 that is a driving unit for the plurality of paper feed rollers 3, and a servo motor M4a and a servo motor M4b that are the driving unit for the great 4 are arranged ( Figure 2). Further, the printing roller Rn (n = 1, 2,...) Is driven by the driving means M6.

  The plurality of paper feed rollers 3 are attached to a plurality of drive shafts 8 spanned on the left and right side surfaces 2 c of the mounting table 2. That is, a plurality of paper feed rollers 3 having the same diameter are arranged at equal intervals on each of the plurality of drive shafts 8 attached at equal intervals. The feed roller 3 protrudes upward from the grade 4 and appears in the opening 2a of the mounting table 2 or is positioned below the great 4 by the up-and-down movement of grade 4. Each drive shaft 8 has one end protruding from the side surface 2c of the mounting table 2, a gear 8a is attached to the one end, and a servo motor (paper feed roller) is connected via the gear 8a and a gear 9a meshing with the gear 8a. 3) M3 is attached (FIG. 5). It is also possible to directly attach the servo motor M3 to the drive shaft 8. Each servo motor M3 is controlled by electrically connected control means 11 (FIG. 2). Then, each drive shaft 8 connected to each servo motor M3 is driven to rotate independently by a command from the control means 11. In the present embodiment, the number of drive shafts 8 is four, and each servo motor M <b> 3 is attached to the four drive shafts 8. Note that it is possible to drive two servo shafts M3 simultaneously with respect to one servo motor M3 by using a connecting belt or the like, or to simultaneously drive the four drive shafts 8.

  The great 4 is a plate-like member disposed in the opening 2 a of the mounting table 2. In this great 4, a plurality of openings 4 a for receiving the respective paper feed rollers 3 (3 a, 3 b, 3 c, 3 d) are provided as plate-like members so that they do not come into contact with the paper feed rollers 3 when they are raised and lowered. It is formed through (FIGS. 3 and 4). The great 4 is connected to the swing shaft 28 via L-shaped members 15, 15, arms 16, and the like disposed near the four corners of the plate. And it connects with the drive shaft 23 of the said drive means (servo motor) M4a via this rocking | fluctuation shaft 28, and the drive force is obtained (FIG. 1, FIG. 2). Here, the swing shaft 28 connected to the servo motor M4a is driven to swing in response to a command from the control means 11. In addition, U-shaped claw portions 4b and 4b are formed at both front and rear ends of the plate-like great 4, and L-shaped members 15 and 15 and arms 16 for raising and lowering the great 4 through the respective claw portions 4b. Etc. are connected. The drive shaft 23 is attached by a bearing provided on one side surface 2c of the mounting table 2 (FIG. 6).

  The upper and lower feeder rollers 10m and 10j that deliver the sheet-like workpiece W fed by the sheet feeding roller 3 to the printing unit S2 side are disposed at the front end of the sheet-like workpiece feeding device S1. The upper side of the feeder roller 10 is a driving roller 10m, and a servo motor M10, which is a driving means, is attached to the end of the feeder roller 10 via a plurality of gears. The servo motor M10 is controlled by the control means 11 (FIG. 2). Here, the servo motor M10 may be attached to each of the upper and lower feeder rollers 10m and 10j, and the upper and lower feeder rollers 10m and 10j may be driven by one servo motor M10 via a gear or the like. The control means 11 is also linked to the printing roller R1 of the printing unit 2 (FIG. 2). For this reason, the driving roller 36m of the feeder roller 10m connected to the servo motor M10 (or the driving shafts 36 and 37 of the feeder rollers 10m and 10j) and the printing roller Rn connected to the driving device M6 according to the command of the control unit 11. (n = 1, 2,...) are rotationally driven, but the control means 11 also performs drive control of the paper feed roller 3 and the grate 4 so that the printing position is not shifted by these controls. Setting is possible (FIGS. 2 and 3).

  A cam mechanism K for raising and lowering the great 4 is attached to the swing shaft 28 of the great 4 (FIGS. 1 and 6). The cam mechanism K is built in a box 24 attached to one side wall (one side surface) 2 c of the mounting table 2. The cam mechanism K is attached in a state where the fixed cam 22 (fixed to the drive shaft 23) and the movable cam 20 are superposed on each other. An arm 25 having a ring 25a in contact with the cams 22 and 20 and swinging around a fulcrum 25b in accordance with the irregularities of the cams 22 and 20 is mounted in the box 24 (FIG. 6B). The swing of the arm 25 is arranged along the longitudinal direction of the mounting table 2 via a connecting member 26 hinged to the arm 25 and a connecting tool 27 hinged to the connecting member 26. This is transmitted to the swing shaft 28 as swing motion. The movable cam 20 has independent drive means M4b that is separate from the drive means M4a. That is, the movable cam 20 is connected and fixed to the timing pulley 30 via a joint 29 passed through a bearing 34 attached to the box 24 (FIG. 7). Then, rotation drive is obtained from the servo motor M4b via the timing pulley 30 and the timing belt 31 and timing pulley 32 connected to the timing pulley 30. When there is no change in the ratio between the period during which the great 4 is rising and the period during which the great 4 is falling, the servo motor M4b is driven to rotate so that the position of the movable cam 20 does not change with respect to the fixed cam 22. ing. The servo motor M4b is controlled by the control means 11 that is electrically connected. Then, the movable cam 20 connected to the servo motor M4b is driven to rotate by a command from the control means 11. Note that the control means 11 can also detect an abnormality of the apparatus and stop the feeding of the sheet-like workpiece W by the signal.

  The swing shaft 28 is connected to the arm 16 disposed below the great 4 via a connector 29 (FIGS. 1 and 3). The arm 16 is arranged below the great 4 so as to be parallel to the traveling direction of the sheet-like workpiece W, and the great 4 is arranged via the L-shaped member 15 and the L-shaped member 15 disposed near the four corners of the great 4. Concatenated with The L-shaped member 15 and the L-shaped member 15 connected to the U-shaped claw portions 4b and 4b of the great 4 have an L-shaped one end and a protruding portion 4c of the U-shaped claw portion 4b. Hinge connection (hinge 15a) is made, the other end is hinge-connected to the arm 16 (15b, 15b), and it rotates around the center hinges 15d, 15d. For example, when the arm 16 moves to the left (as viewed from FIG. 3) by the rotation of the swing shaft 28, the L-shaped member 15 rotates about the hinge 15d and the hinge 15a side is lifted from the initial position. Thereby, the great 4 rises. Conversely, when the arm 16 moves to the right side (right side in FIG. 3) by the rotation of the swing shaft 28, the connector 15 rotates about the hinge 15d and the hinge 15a side is pushed down from the initial position. As a result, the great 4 is lowered.

  Next, the setting of the sheet feeding roller 3 and the great 4 of the sheet-like workpiece feeding device S1 will be described. Here, one cycle (one cycle) for feeding one sheet-like workpiece W is set to a rotation angle of 360 °. When the sheet-like workpiece W is accurately conveyed and printed by the sheet feeding unit (sheet-like workpiece feeding device) S1 and the printing unit (printing unit) S2, the printing rollers Rn (n = 1, 2,...) Since one cycle is performed for each cycle of the sheet-like workpiece W, one cycle of the printing roller Rn corresponds to one cycle (one cycle) of the sheet-like workpiece W. Similarly, when the sheet-like workpiece W is accurately conveyed and printed, the great 4 repeats the raising / lowering driving for each cycle of the sheet-like workpiece W. This corresponds to one cycle (one cycle) of the workpiece W. Similarly, when the sheet-like work W is accurately conveyed and printed, the paper feed roller 3 repeats the acceleration / constant speed / deceleration cycle for each cycle of the sheet-like work W. The acceleration / constant speed / deceleration cycle corresponds to one cycle (cycle) of the sheet-like workpiece W.

  FIG. 8 is a flowchart schematically showing a procedure for setting rotation and raising / lowering of the feeder roller 10 (10m, 10j), the sheet feeding roller 3, and the great 4 of the sheet-like workpiece feeding device S1. First, the setting of the feeder roller 10 (10m, 10j) will be described. First, the diameter 2rp of the printing roller R1 (including the thickness of the printing plate Ra) and the rotation speed Np (Np = 1 / cycle T) per unit time of the printing roller Rn (n = 1, 2,...) Input to the control means 11 (step 1). Here, the peripheral speed Vp of the printing roller Rn is determined from the diameter 2rp of the printing roller Rn and the rotational speed Np per unit time of the printing roller Rn. That is, the peripheral speed Vp = 2rp × π × Np (Formula 1). Next, the control means 11 calculates the optimum number of revolutions per unit time of the servo motor M10 from the above numerical values (step 2). Here, the rotation speed of the servo motor M10 is calculated so that the circumferential speed Vp of the printing roller R1 and the circumferential speed V10 of the feeder roller 10 (10m, 10j) are the same. Then, the calculation result in step 2 is output from the control means 11 to the servo motor M10 (step 3).

  Next, the setting of the paper feed roller 3 will be described. First, the size of the sheet-like workpiece W (length in the traveling direction), the diameter 2 rp of the printing roller Rn (including the thickness of the printing plate Ra), and the rotation speed Np per unit time of the printing roller Rn are transferred to the control unit 11. Input (step 1). The peripheral speed Vp of the printing roller Rn is determined from the diameter 2rp of the printing roller Rn and the rotation speed Np per unit time of the printing roller Rn. Next, the control means 11 calculates the rotation ratio and cycle for repeating acceleration, constant speed, and deceleration of each servo motor M3 that drives each paper feed roller 3 from the above numerical values (step 2). Here, the rotation rate of each servo motor M3 is such that the peripheral speed V3 at the constant speed of each paper feed roller 3 is equal to the peripheral speed Vp of the printing roller R1, and the acceleration / The period Tr for repeating constant speed / deceleration is calculated so as to coincide with the rotation period T of the printing roller Rn. Further, the rate of acceleration / constant speed / deceleration of the rotation of each servo motor M3 is calculated so as to correspond to the size (length in the traveling direction) of the sheet-like workpiece W to be sent out. Then, the calculation result in step 2 is output from the control means 11 to each servo motor M3 (step 3). Here, the control means 11 outputs an independent calculation result for each servo motor M3 that drives each paper feed roller 3. Thus, for example, when the contact time with the sheet-like workpiece W differs for each paper feed roller 3 depending on the size (the length in the traveling direction) of the sheet-like workpiece W, the feeding not in contact with the sheet-like workpiece W is performed. With respect to the paper roller 3, the servo motor M3 can be controlled to stop the rotation.

  The great 4 is raised and lowered by each rotation of a servo motor M4a that is a driving means for the fixed cam 22 and a servo motor M4b that is a driving means for the movable cam 20. First, setting of the servo motor M4a of the fixed cam 22 will be described. The diameter 2rp of the printing roller Rn (including the thickness of the printing plate Ra) and the rotation speed Np per unit time of the printing roller Rn are input to the control means 11 (step 1). In addition, the current phase angle (great phase angle) of the fixed cam 22 is input to the control means 11. Next, the control means 11 calculates the number of rotations per unit time of the servo motor M4a from the above numerical values (step 2). In addition, it is calculated how many times the current phase angle (great phase angle) is rotated so that the phase angle at the start of the fixed cam 22 is suitable. Next, the calculation result of the phase angle is output from the control means 11 to the servo motor M4a, and the phase angle of the fixed cam 22 is adjusted (step 3). Then, the calculation result of the rotational speed per unit time obtained in step 2 is output from the control means 11 to the servo motor M4a (step 4). The phase angle (grate phase angle) means that the predetermined position of the great 4 is set to 0 °, and the rotation of the fixed cam 22 with respect to the great 4 when one cycle in which the great 4 repeats moving up and down is 360 °. The phase angle. In the great 4, the swinging state of the arm 25 in contact with the position of the concave portion and the convex portion due to the rotation of the fixed cam 22 (and the movable cam 20) changes, and the elevation position of the great 4 changes. The position of the fixed cam 22 corresponds to the great phase angle and can be expressed by the great phase angle. Therefore, if the current phase angle of the fixed cam 22 (the great phase angle) is known, the fixed cam 22 may be rotated by the difference from the phase angle at the start (the great phase angle).

  Next, setting of the servo motor M4b of the movable cam 20 will be described. The size (length in the traveling direction) of the sheet-like workpiece W, the diameter 2rp of the printing roller Rn (including the thickness of the printing plate Ra), and the rotation speed Np per unit time of the printing roller Rn are input to the control means 11 ( Step 1). Then, the current phase difference of the movable cam 20 with respect to the fixed cam 22 is input to the control means 11. Next, the control means 11 calculates the number of rotations per unit time of the servo motor M4b from the above numerical values (step 2). Here, the rotation speed per unit time of the servo motor M4b is calculated so that the rotation speed of the movable cam 20 and the rotation speed of the fixed cam 22 coincide. Further, it is calculated how many times the movable cam 20 is rotated with respect to the current fixed cam 22 to cope with the size (length in the traveling direction) of the sheet-like workpiece W. Here, by shifting the movable cam 20 relative to the fixed cam 22, the overlapping state of the convex portions changes, and it is possible to cope with a change in the size of the sheet-like workpiece W (see FIG. 9B). (See shaded area). Next, the calculation result of the relative phase angle is output from the control means 11 to the servo motor M4b, and the relative phase angle of the movable cam 20 with respect to the fixed cam 22 is adjusted (step 3). Then, the calculation result of the rotational speed per unit time obtained in step 2 is output from the control means 11 to the servo motor M4b (step 4). Here, the present cam mechanism K rotates the movable cam 20 with respect to the fixed cam 22 and shifts the relative position thereof, so that the two cams are regarded as one cam. It is a structure which changes the raising / lowering state of the great 4 by changing the ratio of the above. Therefore, the relative phase angle (of the movable cam 20 with respect to the fixed cam 22) matching the predetermined size of the sheet-like workpiece W is known, and the current relative phase angle (of the movable cam 20 with respect to the fixed cam 22) is determined. If you know, if the movable cam 20 is rotated with respect to the fixed cam 22 by the difference, the cam (cam when the two cams are regarded as one) according to the change of the size of the sheet-like workpiece W The ratio of the unevenness can be changed.

  When actually feeding the sheet-like workpiece W to the printing unit S2 side using the sheet-like workpiece feeding device S1 in which the rotation and raising / lowering of the feeder rollers 10m and 10j, the feed roller 3 and the great 4 are set as described above. Will be explained. The printing plate R1a used has a printing plate R1a thickness of 7.2 mm (this is referred to as “reference printing plate”), and the rotation speed Np of the printing roller Rn (n = 1, 2,...) Is 300 sheets. / Min, that is, one rotation every 0.2 seconds (period T = 0.2 sec). The diameter of the paper feed roller 3 is 100 mm. Further, when the paper feed roller 3 starts to accelerate, the position of the great 4 is at a position where it starts to slightly descend from the highest position (at this time, the upper surface of the great is the upper end 3j of the paper feed roller 3). Greater than 4), the Great 4 has an angle of 5 degrees, in which one cycle (one cycle) of feeding one sheet-like workpiece W is 360 °, in other words, the Great 4 is driven to move up and down. When the driving is performed by an angle of 5 degrees with one period being 360 ° (downward driving), the upper surface of the great 4 and the upper end 3j of the paper feed roller 3 are set to coincide (FIG. 9). Further, in order to optimize the contact time between the sheet feeding roller 3 and the sheet workpiece W (the distance that the sheet feeding roller 3 feeds the sheet workpiece W) in accordance with the size of the sheet workpiece W, the Great 4 The phase angle of the movable cam 20 (the relative phase angle of the movable cam 20 with respect to the fixed cam 22) is set.

  Then, when the sheet-like workpiece W is sent out in a stacked state on the mounting table 2 of the sheet-like workpiece feeding device S1, among the sheet-like workpieces W stacked on the mounting table 2, the lowermost sheet-like workpiece W1 is Since the front gauge 14 is not contacted, the start position may be shifted with respect to the second sheet-like workpiece W2 from the lowermost layer. In this respect, in the present embodiment, first, the front gauge 14 is lowered to load the sheet-like workpiece W, and then the sheet feeding roller 3 is rotated forward (rotated in the traveling direction of the sheet-like workpiece W) to lower the lowermost layer. By bringing the front end portion of the sheet-like workpiece W1 into contact with the front gauge 14, the start position of the lowermost sheet-like workpiece W can be set (FIG. 3). The setting of the start position is extremely important for preventing printing misalignment in the printing unit S2, and in the present invention, accurate conveyance by the feeding device S1 is realized together with winding of the conveyance belt 43 around the feeder roller 10 described later. .

  After the above setting is completed, the sheet-like workpieces W stacked on the mounting table 2 are sent out to the printing unit S2 side. FIG. 9 shows the state of rotation of the sheet feeding roller 3 and driving of the grate 4 during driving of the sheet-like workpiece feeding device S1, and one cycle (one cycle) of feeding one sheet-like workpiece W at a rotation angle of 360 °. FIG. 6 is a diagram showing the rotation angle of 360 ° as a reference. FIG. 9A is a diagram showing the acceleration / constant speed / deceleration ratios of the sheet feeding roller 3. FIG. 9B is a diagram showing the manner in which the great 4 moves up and down with respect to the paper feed roller 3. First, when the paper feed roller 3 starts to rotate, the great 4 is still in a position higher than the upper end of the paper feed roller 3, so that the paper feed roller 3 and the lowermost sheet-like workpiece W1 are not in contact with each other. . Thereafter, when the great reaches the position of 5 degrees in FIG. 9A, the upper surface of the great 4 becomes the same as the upper end 3j of the paper feed roller 3 and then descends. At the time of 5 degrees, the sheet feed roller 3 comes into contact with the lowermost sheet-like workpiece W1. The sheet-like workpiece W1 is fed to the feeder rollers 10m and 10j by the acceleration and constant rotation of the paper feed roller 3. When the sheet-like workpiece W1 is sufficiently fed to the feeder rollers 10m and 10j, the great 4 rises again, and the contact between the sheet feeding roller 3 and the sheet-like workpiece W1 is cut off. The fed sheet-like workpiece W1 is fed to the printing roller Rn by the feeder rollers 10m and 10j and printed at a predetermined location. The sheet feeding roller 3 starts to decelerate from the point when contact with the sheet-like workpiece W1 is cut off by the great 4, and starts to accelerate again when one sheet-like workpiece W1 is fed (see FIG. 9A). Waveform Rf). By repeating the above, the stacked sheet-like workpieces W are sequentially sent to the printing unit S2 side.

  In the above description, the thickness of the reference stamp plate is 7.2 mm. However, in the present embodiment, it is possible to deal with a stamp plate having an arbitrary thickness. For example, even when the thickness of the printing plate is 3.6 mm, which is thinner than the reference, if each drive means such as the paper feed roller 3 is set accordingly (rotation of each drive means such as the paper feed roller 3). If the speed is reduced), the sheet-like workpiece W can be sent out in accordance with the surface speed (circumferential speed) of the printing roller Rn (waveform Rb in FIG. 9A). That is, when the thickness of the printing plate is changed from 7.2 mm to 3.6 mm, the diameter 2 rp of the printing roller R1 is reduced by an amount corresponding to the thickness reduction of the printing plate, and thus the cycle in which the printing roller Rn rotates once. Is the period T1 before the change (unless the rotation speed of the printing roller is changed), but the peripheral speed is Vp ′ slower than the (peripheral speed before the change) Vp. In accordance with this, the peripheral speed at the constant speed of the paper feed roller 3 must be slowed. However, in the present embodiment, the drive means such as the paper feed roller 3 is driven independently, so that this can be matched. Yes (waveform Rb in FIG. 9A).

  On the other hand, in the conventional feeding device (structure in which the rotation drive of the paper feed roller D12 and the vertical drive of the great D11 are obtained by the gear mechanism and the cam mechanism attached to the same drive shaft D52) S11, the mark is 7.2 mm. As long as it corresponds to the plate Ra, it could not correspond to other thickness printing plates (for example, 3.6 mm). That is, when the thickness of the printing plate is changed from 7.2 mm to 3.6 mm, the diameter 2 rp of the printing roller Rn is reduced by an amount corresponding to the thickness reduction of the printing plate, so that the period of one rotation of the printing roller Rn. Is the period T1 before the change (unless the rotation speed of the printing roller is changed), but the peripheral speed is Vp ′ slower than the (peripheral speed before the change) Vp. In accordance with this, the peripheral speed at the constant speed of the paper feed roller D12 must be reduced. In order to reduce the peripheral speed, the rotational speed of the drive shaft D52 may be decreased. However, if the rotational speed of the drive shaft D52 is decreased, the cycle of acceleration / constant speed / deceleration of the feed roller D12 becomes longer than T1. That is, one cycle (one cycle) for feeding the sheet-like workpiece W when the driving units are synchronously driven and the cycle of acceleration / constant speed / deceleration of the sheet feeding roller D12 are not matched, and a deviation occurs. (As shown by the waveform Rc in FIG. 9A, the acceleration / constant speed / deceleration period of the sheet feeding roller D12 changes, and a deviation occurs with respect to one cycle (one period) in which the sheet-like workpiece W is fed. Here, as an example of the deviation, when the rotation angle is 380 ° with respect to the rotation angle 360 ° of one cycle (one cycle) of the sheet-like workpiece W, the feeding roller D12 is one cycle of acceleration, constant speed, and deceleration. Shows an example to complete). Further, the period of raising and lowering the great D11 is also longer than T1 because the rotational speed of the drive shaft D52 is reduced. That is, one cycle (one cycle) of feeding the sheet-like workpiece W and the cycle of raising / lowering the great D11 are not matched, and a deviation occurs. For this reason, the timing at which the sheet-like workpiece W is supplied from the sheet-like workpiece feeding device is delayed, and when the sheet-like workpiece reaches below the printing roller, the printing plate position of the printing roller and the sheet-like workpiece are printed. There arises a problem that the power range is gradually shifted. Although one cycle of feeding one sheet-like workpiece W has been described as a rotation angle of 360 °, the description is the same as described above even if this and one rotation of the printing roller R1 are the same.

  In the present embodiment, when the sheet feed roller 3 sends out the sheet-like workpiece W, even if the size of the sheet-like workpiece W (length in the traveling direction) is different, the feeder rollers 10m and 10j are fed from the front gauge 14. The distance to is not changed. Therefore, whether the sheet-like workpiece W is short or long, the feed amount of the sheet feed roller 3 until the sheet-like workpiece W reaches the feeder rollers 10m and 10j is the same. However, when the sheet-like workpiece W is long, most of the sheet-like workpiece W remains on the paper feed roller 3 even when the sheet-like workpiece W reaches the feeder rollers 10m and 10j. , 10j side, it is necessary to continue feeding the sheet-like work W by the paper feed roller 3.

  Here, when the lowermost sheet-like workpiece W1 reaches the feeder rollers 10m and 10j, the second lowermost sheet-like workpiece W2 that overlaps the lowermost sheet-like workpiece W1 is the lowermost sheet-like workpiece W1. And a part of it is lifted (see FIG. 10A). A suction means Q for bringing the sheet-like workpiece W and the sheet feeding roller 3 into contact with each other is provided below the sheet feeding roller 3 and the grate 4, so that the raised portion of the second sheet-like workpiece W 2 There is a risk of being pulled by the suction means Q, coming into contact with the paper feed roller 3 (for example, the paper feed roller 3d) located at the rear, and being damaged by friction. Further, the other sheet-like workpiece W2 obtained with the propulsive force from the rear paper feed roller 3 is about to move to the printing unit S2 side, and the gap (distance d) between the front gauge 14 and the mounting table 2 in front of the mounting table 4 is set. ), The sheet-like workpiece W2 may be damaged.

  In this respect, in the present embodiment, as shown in FIGS. 10A and 10B, the rear feed rollers 3c and 3d that are not in contact with the sheet-like workpiece W1 among the respective feed rollers 3a to 3d are the same. Stop driving. Here, it is preferable to stop in order from the rear side in the order in which the second sheet-like workpiece W2 comes into contact with the lowermost layer (3c next to the paper feed roller 3d). It is also possible to simultaneously stop the two feeding rollers 3c and 3d on the rear side. The stop is performed by calculating the moving distance of the sheet-like workpiece W1 from the rotation amount of the paper feed roller 3. Since the feed rollers 3a, 3b, 3c and 3d of the present embodiment are each provided with a servo motor M3, the control means 11 can stop them in the above order. It is possible to prevent printing misalignment by the control of the control unit 11. Then, the second sheet-like workpiece W2 from the lowermost layer is disposed at a position above the sheet feeding rollers 3a, 3b, 3c, 3d to become the lowermost sheet-like workpiece W1, and four sheet feeding rollers 3 at a time. Will be sent out. In this way, the sheet-like workpiece W can be accurately fed out without being damaged (FIG. 10C). In the type in which the paper feed rollers 3a, 3b, 3c, and 3d are driven two by two, for example, the feed amount of the sheet-like workpiece W can be increased, and the front side paper feed rollers 3a, 3b and the rear side The rear paper feed rollers 3c and 3d are simultaneously stopped in units of the paper feed rollers 3c and 3d.

  As described above, the sheet-like workpiece sending device S1 sequentially sends the sheet-like workpiece W to the printing unit S2. In this regard, in the conventional apparatus, when the feeding operation of the sheet-like workpiece W is stopped, the grate 4 is raised, and the contact between the sheet feeding roller 3 and the lowermost sheet-like workpiece W1 is cut off. In the conventional apparatus, an emergency stop unit is installed in the cam mechanism K that moves the grate 4 up and down, and the grate 4 is raised using this emergency stop unit, and the contact between the sheet feed roller 3 and the lowermost sheet-like workpiece W1 is cut off. Things have been done. However, in the present sheet-like workpiece feeding device S1, the drive means (servo motors M4a and M4b) for the great 4 are independent of the drive means M3 for the paper feed roller 3. If the driving of M3 is stopped, there is no need to provide emergency stop means as in the prior art, and the structure can be simplified. However, if the emergency stop means is provided in the present embodiment, and the sending device is emergency stopped by a stop signal when a failure occurs, it can be stopped earlier than in the case of the above structure, and the number of sheet-like workpieces W to be discarded Can be reduced.

  Next, the feeding device (paper feeding unit) S1, a plurality of printing rollers R1 that perform printing at a predetermined position of the sheet-like workpiece W supplied from the feeding device S1, and a conveyance belt that conveys the sheet-like workpiece W The printing unit S2 having 43 is described (FIG. 11).

  In the present embodiment, four printing rollers Rn (n = 1, 2,...) Are installed at equal intervals in order to perform four-color printing. Here, the printing areas in which each printing roller Rn is responsible for printing are a first printing area S2a, a second printing area S2b, a third printing area S2c, and a fourth printing area S2d in order from the upstream side. Each of the printing rollers Rn has independent driving means M6, and each driving means M6 is electrically connected to the control means 11 and interlocks with each part of the feeding device S1 according to a command from the control means 11. A printing plate Ra having a predetermined thickness is attached to the outer periphery of each printing roller R1. The stamp Ra includes, for example, a 3.6 mm plate and a 7.2 mm plate, which can be exchanged. Each printing roller Rn is provided with an ink roller (not shown) that supplies ink while in contact with each printing plate Ra. Auxiliary rollers Rh that support the pressing of the printing rollers Rn against the sheet-like workpiece W when the sheet-like workpieces W pass are provided below the printing rollers Rn with the conveyance belt 43 interposed therebetween. Each of the printing regions S2a to S2d is provided with a suction box 56 formed with a plurality of suction holes provided in the transport belt 43, and sucks the sheet-like workpiece W on the transport belt 43. Reference numerals 51, 52 and 53 are guide rollers.

  The conveyor belt 43 is an endless belt, is stretched over the first drive roller 44 and the second drive roller 45, and rotates in a predetermined direction by the rotational drive of these drive rollers. The first drive roller 44 is attached to a fixed frame (not shown) installed on both sides of the conveyor belt 43 via a bearing, and is disposed below the downstream driven roller 48. In the vicinity (upper side) of the driving roller 44, a tension roller 49 is attached to the fixed frame via a bearing to apply tension to the conveying belt 43 and increase the frictional force between the first driving roller 44 and the conveying belt 43. It has been. The tension roller 49 is slidable substantially in the vertical direction, and by this sliding, the distance from the first drive roller 44 is adjusted, and the tension around the first drive roller 44 of the transport belt 43 is adjusted. . The second driving roller 45 is attached to the fixed frame via a bearing, and is disposed on the lower side on the upstream side. In the vicinity (upper side), tension is applied to the conveying belt 43, and the second driving roller 45 A tension roller 50 for increasing the frictional force with the conveyor belt 43 is attached to the fixed frame via a bearing. The tension roller 50 is slidable in a substantially horizontal direction. By this sliding, the distance from the second drive roller 45 is adjusted, and the tension around the second drive roller 45 of the conveyor belt 43 is adjusted. . Independent drive means (servo motor) M5 is attached to the first and second drive rollers 44 and 45, and this drive means (servo motor) M5 is electrically connected to the control means 11. Note that the first and second drive rollers 45 may be driven by one drive means M5 through a gear or the like.

  Further, the conveyor belt 43 is stretched around tension rollers 49, 50, guide rollers, etc. disposed in the vicinity of the drive rollers 44, 45. The rollers on which the conveyor belt 43 is stretched are rotatably attached to fixed frames (not shown) installed on both sides of the conveyor belt 43. That is, the transport belt 43 is passed in the order of the first drive roller 44, the tension roller 49, the guide roller 51, the guide rollers 52 and 53, the second drive roller 45, the tension roller 50, and the steering shaft 46, and The conveyor belt 43 is stretched around the driven roller 10j of the feeder rollers 10m and 10j of the delivery device S1. Note that the steering shaft 46 prevents the movement of the conveyor belt 43 during travel.

  As described above, when the conveyor belt 43 is driven by the first and second drive rollers 44 and 45, compared to the case of one conventional drive roller, the conveyor belt 43 is caused by its own weight, suction action by the suction box 56, and the like. The elongation of the conveyor belt 43 can be suppressed. That is, when there is a single drive roller, there are a portion where the conveyance belt 43 is pulled with a strong force on the contact surface between the drive roller and the conveyance belt 43 and a loose portion where the force of the drive roller is not excessive. It will be noticeably divided. The portion pulled by the drive roller usually corresponds to a conveyance section where the sheet-like workpiece W is actually conveyed. If this portion is extended by a strong pulling force, the conveyance state of the sheet-like workpiece W is affected, and printing misalignment occurs. Will be a cause. On the other hand, when the two drive rollers 44 and 45 are arranged, respectively, a portion that is pulled by the drive rollers 44 and 45 with a strong force at the contact surface between the drive rollers 44 and 45 and the conveyor belt 43, and Loose portions where the force of each of the drive rollers 44 and 45 is not excessively generated occur, but these are canceled out. As a result, the conveyance belt 43 is hardly stretched. Thereby, the conveyance state of the conveyance belt 43 is kept constant, and the sheet-like workpiece W can be stably conveyed, so that accurate printing is possible.

  By the way, in the conventional apparatus, as shown in FIG. 12, the delivery device S10 and the printing unit S20 are completely separated, and the printing unit S20 includes a plurality of printing rollers Rn (n = 1, 2,...). The conveying belt 43 is attached so as to cover the entire area of the plurality of printing rollers Rn (n = 1, 2,...). That is, in the conventional apparatus, the conveyance belt 43 of the printing unit S20 is stretched around the driven rollers 470 and 480, the drive shaft 440, the tension roller 490, and the guide rollers 510 and 520. An auxiliary roller 500 having the same diameter as the driven roller 470 is installed above the upstream driven roller 470. The printing unit S20 has one drive shaft. However, in the printing unit S20 of the conventional apparatus, when the conveyance distance by the conveyance belt 43 becomes long, the last printing roller is caused by the extension of the conveyance belt 43 stretched over these long distances, the suction by the suction box 56, and the like. It is not easy to carry the sheet to the R4 printing position (downstream end of the region S2d) without causing a printing deviation. In particular, if the sheet-like workpiece W is not accurately conveyed from the feeding device side to the printing position of the first printing roller R1 (downstream end of the region S2a), the subsequent printing positions of the second to fourth printing rollers R2 to R4 It cannot be accurately conveyed to (the respective downstream ends of the areas S2b to S2d). In other words, if the first delivery is not performed accurately, the subsequent adjustment cannot prevent printing misregistration no matter how much adjustment is performed.

  On the other hand, in the present embodiment, as described above, the conveyor belt 43 is stretched around the driven roller 10j of the feeder rollers 10m and 10j on the delivery device S1 side (FIG. 11). That is, the conveyor belt 43 is stretched over the feeder roller 10 on the delivery device S1 side, and this conveyor belt 43 also serves as the conveying means of the printing unit S2. Accordingly, the sheet-like workpiece W1 that has reached the feeder roller 10 by the feeding device S1 is delivered to the printing unit S2 side by the conveyor belt 43 at the rotational speed of the feeder rollers 10m and 10j. For this reason, particularly in the first printing roller R1, the position of the printing plate Ra of the printing roller R1 and the range where the sheet-like workpiece W is to be printed coincide with each other at the time of starting contact with the sheet-like workpiece W. That is, printing misalignment at an important initial position can be prevented by passing the conveyor belt 43 over the feeder roller 10. Moreover, the conventional driven roller 470 becomes unnecessary by passing the feeder roller 10 over, and the number of parts can be reduced. When the conveyor belt 43 is passed over the feeder roller 10j, the feeder roller 10j and the first drive roller 44 function in the same manner as described above without providing the second drive roller 45 of the conveyor belt 43. It becomes possible to demonstrate. As described above, when the printing plates Ra having different thicknesses are mounted on the printing rollers Rn (n = 1, 2,...), The control unit 11 performs the sheet-like workpiece feeding device S1 according to the thickness. Printing on the sheet-like workpiece W is appropriately performed by calculating and changing the conveying speed, the conveying speed of the feeder roller 10 and the conveying belt 43, and calculating and giving the phase angle corresponding to the position. .

(Second Embodiment)
In the second embodiment of the present invention, the sheet feeding unit (sheet-like work feeding device) S1 and the printing unit (printing unit) S2 of the above-described embodiment, and the box making installed on the downstream side of the printing unit S2. This is a sheet-like workpiece feeding method used in a box making machine having a section (slotter section, die cutter section, folding section, delivery section) S3. As for the box making part S3, the slotter part S3 will be described as an example. However, the box making part S3 can be applied to other post-processing apparatuses that require phase alignment other than the slotter part such as a die cutter part, a folding part, and a delivery part. .

  The delivery method of the present embodiment is premised on being used at least in a box making machine in which main drive units (feed roller 3, great 4, printing roller Rn, etc.) of delivery device S1 and printing unit S2 are independently driven. It becomes. Therefore, in the feeding method of the present embodiment, the sheet feeding roller 3, the grate 4 and the driving means M3, M4a (and M4b) and M10 of the feeding roller 10j and 10m of the feeding device S1 are independent from each other and printing is performed. The present invention is applied to a box making machine in which the driving means M6 and M5 of the printing roller Rn and transport roller 45 of the unit S2 are independent from each other (see FIG. 11). Further, in the delivery method of the present embodiment, not only the drive means of the delivery device S1 and the printing unit S2 are independent, but also a post-processing device that requires phase alignment in the next step of the printing unit S2 ( A ruled line imparting unit for imparting a ruled line (crease) to the sheet-like workpiece W, a slotter unit or a die cutter unit for making a predetermined cut in the sheet-like workpiece, and the driving means of each of these post-processing devices is the delivery device S1. And is applied to a box making machine that is independent of each driving means of the printing unit S2 (see FIG. 15).

In the present embodiment, an acceleration pattern of the sheet feeding roller 3 is determined according to the printing plate thickness, and an acceleration distance d ₀ until the sheet-like workpiece W reaches the conveyance speed Vs is obtained by calculation from the acceleration pattern. This is a sheet workpiece feeding method in which the phase angle δn corresponding to the position of the printing roller Rn of the printing unit S2 is calculated and set from this value. More specifically, the conveyance speed of the sheet-like workpiece feeding device S1 at a predetermined printing / box-making number Ns (the conveyance speed when the sheet-like workpiece W is fed by the paper feed roller 3 and reaches a constant velocity state) Vs. , Calculating and setting the conveyance speed (conveyance speed of the conveyance belt 43) Vs of the printing unit S2, and according to the thickness of the printing plate Ra set on the printing roller Rn (n = 1, 2,...) set the acceleration pattern of the paper feed roller 3 in the sheet-shaped workpiece delivery device S1, obtained by computation of the acceleration distance d ₀ from the acceleration pattern, and sets the position P ₀ delivery virtual this distance d _0, the sheet-like workpiece W is as being conveyed at a constant speed Vs from the virtual feeding position _{P 0,} calculates the phase angle δn in accordance with the printing roller Rn printing portion S2 of the position _{P 0} the virtual feed as a reference (Nn = 1,2 ··) Then, the phase angle of the printing roller Rn is set.

Further, according to the present embodiment, not only the phase angle of the printing roller Rn but also the box making part (slotter part) S3 which is a post-processing apparatus is set in a sheet shape in which the phase angle is set according to the thickness of the printing plate. This is a method of feeding a workpiece. More specifically, not only the conveyance speed Vs of the sheet-like work feeding device S1 with a predetermined number of printing / box making Ns but also the box making speed Vy of the box making part (slotter part) S3 is calculated and set. with, as the sheet-shaped workpiece is transported at a constant speed Vs from the position P ₀ delivery of the virtual, depending on the position of the Seihako portion a virtual feeding position P ₀ is a post-processing device as a reference (slotter section) S3 The calculated phase angle δn is calculated and set.

FIG. 15 is a schematic side view of a box making machine including the paper feeding part S1, the printing part S2, and the box making part (slotter part) S3. In the box making machine, first, a sheet feeding unit (sheet-like workpiece feeding device) S1 is arranged from the upstream side to the downstream side in the conveying direction of the sheet-like workpiece W, and a printing unit (printing unit) S2 is arranged downstream thereof. And a box making part (slotter part) S3 is further arranged downstream thereof. In this box making machine, the feeding roller 3 and the great 4 (not shown) of the feeding device S1.
And the driving means M3, M4a and M4b (not shown) and M10 of the feeder rollers 10j and 10m are independent from each other, and the driving means M6 and M5 of the printing roller Rn of the printing unit S2 and the conveying roller 45 are mutually connected. It has an independent configuration. Further, the driving means M13 of the box making part (slotter part) S3 is also independent of the respective driving means of the paper feeding part S1 and the printing unit S2. These driving means are driven / stopped by the command of the control means 11. Note that a printing plate Ra having a predetermined thickness is attached to each printing roller Rn (n = 1, 2, 3, 4) in FIG. 15 (see FIG. 11). Each printing roller Rn (n = 1, 2, 3, 4) is represented as a circle having a diameter of 2 rp. Accordingly, the sheet-like workpiece W is accelerated according to the actual delivery preset from the position P ₁ has been accelerated pattern (see FIG. 16), reaches the belt conveying speed Vs in the feeder rollers 10 forward position, through the feeder roller 10 To the conveyor belt 43. Further, the sheet-like workpiece W is conveyed to the printing position of the printing rollers R1, R2, R3, and R4 by the conveying belt 43 while maintaining the conveying speed Vs, and further conveyed to the next box making unit S3. Then, processing such as grooving is performed. Here, in the box making machine used in the present embodiment, the conveyor belt 43 is stretched around the lower feeder roller 10j among the feeder rollers 10m and 10j, but here, the feeder rollers 10m and 10j are one. The case of driving with one driving means M10 will be described. The driving means of the feeder rollers 10m and 10j may be independent from each other, or the driving means is not attached to the feeder roller 10j and only driven as a driven roller of the conveying roller 45. Good.

As described above, the sheet feeding roller 3, the great 4, the feeder rollers 10m and 10j of the sheet feeding unit S1, the printing rollers Rn (n = 1, 2, 3, 4) of the printing unit S2, and the conveying rollers The 45 driving means are independent of each other. Further, the drive means of the box making part (slotter part) S3 is also independent of the drive means. These drive means are electrically controlled by the control means 11 and are driven and stopped (FIG. 22). In this embodiment, when the control means 11 drives each independent drive means, the printing roller Rn (n = 1, 2, 3, 4) and the box making section (slotter) that require setting of the phase angle. Part) S3, a common reference position (virtual feed position P ₀ ) is set, and from this reference position to the printing roller Rn (n = 1, 2, 3, 4) and the box making part (slotter part) S3 The distance is calculated and set as the phase angle δn to adjust the printing operation and the like.

FIG. 17 shows the relationship between the distances of the drive units when the sheet-like workpiece W is continuously conveyed and printed by the box making machine and is further grooved by the box making unit (slotter unit) S3. It is a figure explaining. First, the virtual feed position P _{0 serving as} a reference position when calculating the phase angle δn of the printing roller Rn (n = 1, 2, 3, 4) and the box making part (slotter part) S3 will be described. Here, for the sake of easy understanding, the driving speed is set to a constant speed. The actual physical delivery position of the sheet-like workpiece W is a position where the sheet-like workpiece W comes into contact with the side end surface 14a of the front gauge 14, that is, the position P ₁ (see FIG. 17). at any position (print portion S2 and Seihako section S3), if you want to know its position is any relationship between the rotational phase of each driving unit, from the virtual feeding position P ₀ is the sheet-like workpiece W It is more convenient to think that it will be sent out at a constant speed. In other words, the actual delivery position P ₁ sheet workpiece W starts to accelerate without the reference, when viewed from the transport system (the printing units S2 and box making Portion S3 side), the sheet-like workpiece W is feeding position A virtual delivery position P _{0 serving} as a reference is set assuming that delivery is performed at a constant speed from a delivery position P _{0 that} is further upstream than P ₁ . Use Thus, each phase angle δn printing roller Rn and Seihako portion (slotter section) S3 as the reference position P ₀ delivery of virtual, the length L ₀ of the reference rotation angle signal one cycle described below It is possible to express with a simple relational expression. When the side end surface 14a of the front gauge 14 is a tapered surface, the lowermost sheet-like workpiece may not be in contact with the side end surface 14a. Even in such a case, the side end surface 14a Is regarded as the actual delivery position.

In FIG. 17, the distance from the side wall surface 14a of the front gauge 14 to the center of the feeder roller 10 of the sheet-like workpiece feeding device S1 is L ₁ , and the distance from the side wall surface 14a of the front gauge 14 to the center of the first printing roller R1. The distance is L ₂ , the distance between the centers of the printing rollers Rn (n = 1, 2, 3, 4) is L ₃ , and the distance from the center of the printing roller R4 to the center of the box making unit (slotter unit) S3 It is referred to as _{L 4.} Furthermore, the diameter (including the printing plate thickness) of each printing roller Rn is 2 rp.

When the distance between each sheet-like workpiece W during conveyance of the sheet-like workpiece (the distance from the leading edge of the upstream sheet-like workpiece W to the leading edge of the downstream sheet-like workpiece W) is L ₀ , this distance L ₀ It is equal to the circumferential length of the roller Rn (the circumferential length including the printing plate thickness). Assuming that the number of printed / unloaded sheets per unit time (one minute) of the sheet-like workpiece W is Ns, the conveyance speed Vs of the conveyance belt 43 is Vs = L ₀ × Ns / 60 [mm using the above L ₀ and Ns. / S] (Expression 2). On the other hand, the peripheral speed Vp of the printing roller Rn (n = 1, 2, 3, 4) is Vp = 2πrp × Np / 60 [mm / s] using the rotation speed Np [rpm] per unit time. -It is expressed as (Formula 1 '). Here, at the time of transporting the sheet-like workpiece, the transport speed Vs = the peripheral speed Vp, and L ₀ × Ns / 60 [mm / s] = 2πrp × Np / 60 [mm / s] holds, and further, the unit time (1 Since the number Ns of sheet-like workpieces printed / carryed out per minute) = the number of rotations Np per unit time (one minute) of the printing roller Rn, L ₀ = 2πrp [mm] (Equation 3) holds. This L ₀ is important in considering the sheet-like workpiece feeding method of the present embodiment, and is treated as a control constant for the sheet-like workpiece feeding method together with the acceleration distance d ₀ described below. Since the box making part (slotter part) S3 is also one in which the upper and lower rollers are rotationally driven, the peripheral speed (box making speed) Vy of the upper and lower rollers is equal to the above Vs, and Vy = Vs (Equation) 4) holds. Here, the distance L _0, and the length of the reference rotational angle signal one cycle. The distance L ₀ is constant even if the number Ns (= the number of rotations Np per unit time) of the sheet-like work is changed unless the thickness of the printing plate is changed. The reference rotation angle signal is also a constant value regardless of the change in the Ns value.

FIG. 16 is a graph showing a change in the conveyance speed when the sheet-like workpiece feeding device S1 of this embodiment sends the sheet-like workpiece W onto the conveyance belt 43 via the feeder roller 10. The vertical axis represents the speed axis representing the peripheral speed of the paper feed roller 3, and the horizontal axis represents the time axis. And the virtual delivery position _{P 0,} the relationship between the phase angle δn of the drive units (n = 1, 2, 3, 4) can be expressed as follows. The lowermost sheet-like workpiece W whose front end in the traveling direction is at the delivery position P ₁ is accelerated by the paper feed roller 3 and becomes constant at the stage when the conveyance speed Vs is reached, and is received by the conveyance belt 43 at that speed. Passed. Here, ta is the time until the sheet-like workpiece W reaches the speed Vs, and tf is the time until the sheet-like workpiece W reaches the feeder roller 10. The virtual delivery position P ₀ is a delivery position when it is assumed that the sheet-like workpiece W is conveyed at a constant speed for a time tf from the actual delivery position P ₁ to the feeder roller 10. If the actual sheet workpiece W from the position P ₁ delivery is to acceleration distance d ₀ a distance traveled to reach the conveying speed Vs, if the acceleration is constant, the actual from the position P ₀ delivery virtual from the graph of FIG. 16 distance delivery to the position P ₁ of equal to this acceleration distance d _0. To summarize these relationships, d ₀ is L ₁ + d ₀ = Vs × tf (Equation 5) using L ₁ (the distance from the side wall surface 14a of the front gauge 14 to the center of the feeder roller 10). ). Therefore, the virtual delivery position P ₀ is a position that is further upstream from the actual delivery position P ₁ by the acceleration distance d ₀ , and this position is used as a reference position for phase alignment of the following parts. In the above (Equation 5), L ₁ is a predetermined value, but the conveyance speed Vs and the time tf are values that change when the printing plate thickness is changed, so the acceleration distance d ₀ is also the printing plate thickness. Changes as the height changes.

Here, when obtaining the acceleration distance d ₀ , the value of the conveyance speed Vs of the paper feed roller 3 and the acceleration α are premised on the assumption that the paper feed roller 3 is accelerated at a constant rate (the acceleration is constant). Alternatively, it can be easily calculated using any value of the acceleration time ta. For example, if the transport speed Vs and the acceleration time ta are given as specified values, the acceleration distance d ₀ = ½ × Vs × ta (Equation 9) can be calculated. Alternatively, if the transport speed Vs and the acceleration α are given as specified values, the acceleration distance d ₀ = ½ × Vs × Vs / α (Expression 10) can be calculated. The mode of acceleration of the paper feed roller 3 represented by the values of the conveyance speed Vs, acceleration α, and acceleration time ta of the paper feed roller 3 is defined as an acceleration pattern of the paper feed roller 3. From the relationship of Vs = α × ta, if any two values of the conveyance speed Vs, the acceleration α, and the acceleration time ta are given as specified values, the remaining one value is automatically determined.

Next, the phase angle δn (n = 1, 2, 3, 4) of the printing roller Rn (n = 1, 2, 3, 4) and the box making part (slotter part) S3 with respect to the virtual delivery position P ₀ is set as above. Represented using L ₀ and d ₀ . In FIG. 17, the sheet-like workpieces W that are advanced by L ₀ from the virtual delivery position P ₀ are drawn in order. Since the distance L ₀ is equal to the circumferential length of each printing roller Rn (the circumferential length including the printing plate thickness), for example, the sheet-like workpiece W assumed to be fed from the virtual feeding position P ₀ is the first printing. While the roller R1 makes one round (until the printing plate Ra rotates from the position on the vertical line X passing through the center of the printing roller R1 (see FIG. 17) and reaches this position again), the distance L ₀ only it advances by a distance _{d 1} from the printing roller R1 reaches the upstream position (see Figure 17). Therefore, every time the first printing roller R1 makes one turn, the printing roller R1 is used to make the printing plate Ra and the range (printing position) to be printed of the sheet-like workpiece W coincide with each other without deviation. if the distance rotate with a delay of the phase angle [delta] ₁ which corresponds to d ₁ set in advance such that (late stamp plate Ra only phase angle [delta] ₁ rotates to come to a position on the vertical line X), the seat No printing deviation occurs between the workpiece W and the printing roller R1. Similarly, the sheet-like workpiece W fed from the virtual feed position P ₀ is at a position upstream from the printing roller Rn by a distance dn when each printing roller rotates n times, so that the printing roller Rn is a distance away from the printing roller Rn. If the rotation is set in advance so as to be delayed by the phase angle δn corresponding to dn, no printing deviation occurs between the sheet-like workpiece W and the printing roller Rn. Here, if the distance L ₀ is the length of one period (360 °) of the reference rotation angle signal, the ratio of the distance dn to the distance L ₀ is the phase angle δn, so δn = dn / L ₀ × 360 [ °] ... (Formula 6)

Here, the distance L ₁ = 110 mm, the distance L ₂ = 1,170 mm, the distance L ₃ = 1,255 mm between the centers of the printing rollers R 1, R 2, R 3, R ₄ , and the distance L ₄ = 1,990 mm. The diameter of the printing roller Rn including the printing plate Ra (printing plate thickness 7.2 mm) is 2rp = 336.1 [mm]. The virtual feeding position _{P 0} the distance to the printing roller Rn (n = 1,2,3,4) from Yn to (n = 1,2,3,4), the actual delivery position the print roller from _{P 1} Rn represented using the relationship between the (n = 1, 2, 3, 4) distance _L 1 _{to, L} 2, L ₃ and L _4. Distance Yn from the virtual feeding position _{P 0} to the printing roller R1 · · · R4 is expressed by Yn = (n-1) × L 3 + L 2 + d 0 (n = 1,2,3,4) ( Fig. 17). On the other hand, when the distance Yn is represented by the distance L ₀ , Yn = n × L ₀ + dn and dn = Yn−n × L ₀ . Therefore, from these two expressions, it can be expressed as dn = (n−1) × L ₃ + L ₂ + d ₀ −n × L ₀ . Here, since δn = dn / L ₀ × 360 [°] from the above, δn = ((n−1) × L ₃ + L ₂ + d ₀ −n × L ₀ ) / L ₀ × 360 [°] · -(Expression 7) In the sheet-like workpiece feeding method of the present embodiment, the control means 11 calculates the phase angle δn from the virtual feeding position P ₀ from the above formula, and the phase of the printing roller Rn (n = 1, 2, 3, 4). Set the angle. Here, the above formula 7 is a formula that can be applied to all the printing rollers when the printing rollers R1, R2, R3, and R4 are arranged at equal intervals (distance L ₃ ). Even if n = 1, 2, 3, 4) are not arranged at equal intervals, a mathematical expression representing the distance Yn (n = 1, 2, 3, 4) from the virtual feed position P ₀ for each printing roller. Each phase angle δn (n = 1, 2, 3, 4) may be obtained using the mathematical formula. Note that δn = ((n−1) × L ₃ + L ₂ + d ₀ −n × L ₀ ) / L ₀ × 360 [°] (Equation 7) is expressed as δn = (Yn−n × L ₀ ) / L ₀ × 360 = Yn / L ₀ × 360−n × 360 [°]. When Yn / L ₀ × 360 = θn [°] (n = 1, 2, 3, 4), it can be expressed as δn = θn−n × 360 [°] (Equation 7 ′) (Table 1 and (See Table 2).

Further, the distance from the virtual feeding position P ₀ to the box making section (slotter section) S3, the relationship between the distance L _1, L _2, L ₃ and L ₄ to each driver from the actual delivery position P1 In terms of use, Y ₅ = 3 × L ₃ + L ₂ + d ₀ + L ₄ . On the other hand, to represent the distance _{Y 5} at a distance _{L 0,} the _{Y 5 = 6 × L 0 +} d 5 _{becomes, d 5 = Y 5 -6 ×} L 0. Therefore, from these two expressions, it can be expressed as d ₅ = 3 × L ₃ + L ₂ + d ₀ + L ₄ −6 × L ₀ . Here, since δ ₅ = d ₅ / L ₀ × 360 [°] from the above, δ ₅ = (3 × L ₃ + L ₂ + d ₀ + L _n −6 × L ₀ ) / L ₀ × 360 [°] (Expression 8) Therefore, when performing phase alignment of the box making unit S3, the phase angle δ ₅ is obtained from this equation. When the phase angle δ ₅ exceeds 360 °, the angle obtained by subtracting 360 ° from δn is set as the phase angle δ ₅ . For example, when the phase angle δ ₅ of the box making part (slotter part) S3 is δ ₅ = 590.1 [°] and exceeds 360 [°] (see FIG. 20), δ ₅ −360 = 590. 1-360 = 230.1 [°] may be set as the phase angle of the box making unit S3. Similarly, when the numerical value calculated as the phase angle δ _n of the post-processing apparatus including the printing roller Rn (n = 1, 2,...) And the slotter unit that requires the phase angle setting is a multiple of 360, A numerical value obtained by subtracting a multiple may be used as the phase angle of the drive unit. Here, it is assumed that the number of printing rollers is four and the number of post-processing devices that need to set the phase angle is one (only the slotter unit). However, the sheet-like workpiece feeding method of this embodiment is a printing method. The present invention can be applied to a box making machine in which an arbitrary number of rollers are installed and an arbitrary number of post-processing apparatuses that require a phase angle setting are installed. Note that δ ₅ = (3 × L ₃ + L ₂ + d ₀ + L _n −6 × L ₀ ) / L ₀ × 360 [°] (Equation 8) is expressed as δ ₅ = (Y ₅ −6 × L ₀ ) / L ₀ × 360 = Y ₅ / L ₀ × 360−6 × 360 [°]. When Y ₅ / L ₀ × 360 = θ ₅ [°], it can be expressed as δ ₅ = θ ₅ −6 × 360 [°] (Equation 8 ′) (see Tables 1 and 2).

  Next, each phase adjustment of the box making machine is actually performed by using the sheet-like workpiece feeding method of the present embodiment.

FIG. 23 is a flowchart showing a procedure when each phase adjustment of the box making machine is performed using the sheet-like workpiece feeding method of the present embodiment. Here, in the box making machine shown in FIG. 17, the distance L ₁ = 110 mm, the distance L ₂ = 1,170 mm, the distance L ₃ = 1,255 mm between the centers of the printing rollers R1, R2, R3, R4, The distance L ₄ is 1,990 mm. In addition, the diameter of the printing roller Rn including the printing plate Ra (printing plate thickness 7.2 mm) is 2rp = 336.1 [mm]. Using this box making machine, each drive unit is phase-matched when the number of printed sheets and the number of boxed works W per unit time are Ns.

  First, in step 1, the diameter 2rp including the printing plate thickness of the printing roller Rn and the number of printing / box making Ns per unit time are input to the control means 11.

Next, in step 2, the control means 11 determines that the sheet-like workpiece feeding device S1 and the conveying belt 43 are conveyed by the conveying speed Vs from (Equation 1 ') and (Equation 4), and the box making speed of the box making portion (slotter portion) S3. Each value of Sy is calculated. Further, the control means 11 calculates the distance L ₀ = 1,056 mm (printing plate thickness 7.2 mm) from (Equation 3). Here, the distance L ₀ is stored in the control means 11 as the length of one period (360 °) of the reference rotation angle signal.

Next, in step 3, the control unit 11 determines the acceleration pattern of the paper feed roller 3. Here, the acceleration pattern of the paper feed roller 3 is a mode of acceleration of the paper feed roller 3 represented by the values of the acceleration α of the paper feed roller 3, the acceleration time ta, and the transport speed Vs (Table 1). reference). Here, since it is the phase alignment of the reference stamp, either the acceleration α or the acceleration time ta among the above values is given as a specified value in advance. In this way, if either the acceleration α or the acceleration time ta is given as a specified value, this value and the transport speed Vs obtained from steps 1 and 2 are substituted into the above-mentioned formula 9 or formula 10. Thus, the acceleration distance d ₀ can be obtained by a simple calculation. Here, the acceleration distance d ₀ = 86 [mm] is calculated. When determining the acceleration pattern of the sheet feeding roller 3 when the printing plate thickness described below is changed, the acceleration pattern on the reference printing plate is used as a reference acceleration pattern, and the printing plate thickness is determined. Determine the acceleration pattern at the time of change.

Next, in step 4, the control unit 11, the acceleration distance _{d 0} obtained in step 3, at a position back to the upstream side by a distance _{d 0} from the actual delivery position _{P 1} (the side wall surface 14a of the front gauge 14) It is set as a certain virtual delivery position P ₀ (see FIG. 17). Here, d ₀ = 86 mm.

Next, in step 5, the control means 11 substitutes the values calculated above into (Formula 7) and (Formula 8) to calculate the phase angle δn of each printing roller Rn and the box making unit S3. . When the distance L ₀ and the distance d ₀ are determined, the phase angle δn of each drive unit on the downstream side is calculated by substituting these numerical values together with other specified values into the respective relational expressions. Here, d ₁ = 200 mm, d ₂ = 399 mm, d ₃ = 598 mm, d ₄ = 797 mm, d ₅ = 675 mm, and δ ₁ = 68.2.
[°], δ ₂ = 136.0 [°], δ ₃ = 203.9 [°], δ ₄ = 271.7 [°], and δ ₅ = 230.1 [°].

Finally, in step 6, the control means 11 drives the drive means of the feeding device S1, the printing unit S2, and the box making unit S3. That is, the control unit 11 drives the drive unit M3 so that the paper feed roller 3 repeats a predetermined acceleration / constant speed / deceleration cycle, and the drive unit M4a causes the great 4 to repeat a predetermined lift cycle. , M4b is driven. Similarly, the driving means M6 is driven so that the printing roller Rn (n = 1, 2, 3, 4) rotates at a predetermined peripheral speed (conveyance speed) Vs, and the box making unit (slotter unit) S3 The drive means M13 is driven to rotate at the box making speed Vy. Similarly, the drive means M10 and M5 are driven so that the feeder rollers 10m and 10j and the transport roller 45 rotate at a predetermined peripheral speed (transport speed) Vs. At this time, the sheet-like workpiece W has not been sent out, and the box making machine is in an idling state. Then, each part reaches a predetermined operating speed, and further, the rotation shafts of the printing roller Rn and the box making part (slotter part) S3 reach a predetermined phase angle with respect to the virtual delivery position P ₀ , and the great 4 cycle of the lifting of, when a state of Okuridaseru the sheet workpiece W in the timing of the phase angle 0 [°] with respect to the virtual feeding position P _0, a standby state. In this state, the sheet-like workpiece W is sent out, so that the sheet-like workpiece W is accurately placed at the printing position of the printing roller Rn (n = 1, 2, 3, 4) or the box-making position of the box-making unit 3. Can be sent out.

FIG. 20 is a graph showing the results of phase alignment of the printing roller Rn and the box making unit (slotter unit) S3. The horizontal axis represents the distance from the feed position P _0, the vertical axis represents the phase angle from the feeding position P _0. Since each roller is positioned at a position that is an integer multiple of the sheet interval L ₀ (1,056 mm), it has a phase angle δn as shown in the figure. In order to maintain an appropriate relative position between each printing roller Rn (n = 1, 2,...) And the box-making part (slotter part) S3 with which the sheet-like workpiece W is conveyed, the phase angle δn is set to 360 °. The rotation is controlled with a phase angle obtained by subtracting an integer multiple value (phase synchronization control).

Since the acceleration pattern of the paper feed roller 3 follows the reference rotation angle signal of the control means 11, even if the box making speed of the box making machine changes (change in the number of printed sheets / box number Ns per unit time). The relationship with respect to the reference rotation angle does not change, and the virtual delivery position P ₀ does not change. Therefore, even if the box making speed changes, it is not necessary to change the phase correction values (the phase angle δn) of the printing roller Rn and the box making part (slotter part) S3.

In an actual box making machine, the thickness of the printing plate is not constant. In some cases, a printing plate of a type thinner than the above-mentioned printing plate thickness may be used. When changing the printing plate thickness, the control constant of the box making machine (the acceleration distance d ₀ and the length L _{0 corresponding} to one period of the reference rotation angle signal) is changed, and the printing roller Rn is used by using the changed control constant. It is necessary to perform phase alignment of (n = 1, 2, 3, 4) and the box making part (slotter part) S3. Hereinafter, changes in the control constant when the thickness of the printing plate is changed from the above-mentioned 7,2 mm to 3.6 mm will be described.

When the thickness of the printing plate is changed, the circumferential length of the printing roller Rn (n = 1, 2, 3, 4) is changed. Therefore, the length of one cycle of the reference rotation angle signal needs to be changed accordingly. . Here, since the printing plate thickness is 3.6 (mm) and the circumferential length of the printing roller Rn is L ₀ ′ = 1,031 (mm), the length corresponding to one period of the reference rotation angle signal is also 1,031 ( mm).

Next, the acceleration distance when the printing plate thickness is changed will be described. FIG. 18 shows a case where the sheet-like workpiece feeding device S1 sends the sheet-like workpiece W onto the conveying belt 43 via the feeder roller 10 when the thickness of the printing plate Ra of the printing roller Rn of the present embodiment is changed. It is a graph showing the change of the conveyance speed. When the thickness in each print roller was used (the change having a thickness of 3.6mm thick 7.2 mm) Ra different printing plate, sheet-like workpiece W is accelerated according to the acceleration pattern from the position P ₁ the actual delivery Then, it reaches the conveying speed Vs ′ and is transferred to the conveying belt 43 via the feeder roller 10 at that speed.

Here, unless the box-making speed (number of sheets of sheet-like workpiece W printed / number of boxes made) Ns is changed, the rotational speed Np of each printing roller does not change, but the peripheral speed (mark Vp ′ (including the plate thickness) changes as Vp ′ = 2πrp ′ (rp> rp ′) (slower here, see FIG. 19). Here, since the conveyance speed Vs ′ of the sheet-like workpiece W is Vs ′, the conveyance speed Vs ′ at which the sheet-like workpiece W is conveyed changes (becomes slower) than before the printing plate Ra is changed.
FIG. 18 shows an example of an acceleration pattern when the conveyance speed of the paper feed roller 3 is changed from the conveyance speed Vs at the reference printing plate to the conveyance speed Vs ′ when the printing plate thickness is changed. Here, the acceleration pattern for changing the conveyance speed of the paper feed roller 3 from Vs to Vs ′ is based on the assumption that the sheet is accelerated at a constant acceleration (in the graph, it is linearly accelerated and not S-shaped). As conditions, (a) an acceleration pattern for fixing acceleration time ta before changing the printing plate and reducing acceleration, (b) an acceleration pattern for fixing acceleration α before changing the printing plate and reducing acceleration time, and ( c) Three types of acceleration patterns are shown, in which the acceleration distance d ₀ before the stamp change is fixed and the acceleration is reduced. In each acceleration pattern, the conveyance speed Vs ′ is the same, but since the acceleration and acceleration time are different, the acceleration distance of the paper feed roller 3 differs depending on which acceleration pattern is selected.

Table 1 generalizes the phase angle of each printing roller and post-processing device (slotter unit) in the reference printing plate and the phase angle of each printing roller and post-processing device for each acceleration pattern when the printing plate is changed. It is the table shown. Table 1 shows the transport speeds and accelerations of the respective acceleration patterns (a), (b), and (c) when the stamp plate Ra is changed from the 7.2 [mm] plate to the 3.6 [mm] plate. The relationship between the acceleration time and the acceleration time is expressed in comparison with the conveyance speed, acceleration, and acceleration time in the reference stamp plate. The control unit 11 may calculate the acceleration distance using any one of the acceleration patterns (a), (b), and (c). For example, the acceleration distance d ₀ ′ may be calculated from the acceleration pattern (conveying speed Vs ′, acceleration time ta, acceleration α ′) of FIG. Here, the acceleration distance d ₀ ′ = 83.9 [mm] is calculated. Since the acceleration distance d ₀ = ½ × Vs × ta [mm] and the acceleration distance d ₀ ′ = ½ × Vs ′ × ta [mm], d ₀ ′ = Vs ′ / Vs × d ₀ [mm] holds. From this and the relationship Vs ′ / Vs = L ₀ ′ / L ₀ , d ₀ ′ = L ₀ ′ / L ₀ × d ₀ [mm] (11) holds. By using the equation (11), and the value of the acceleration distance d ₀ of the reference mark plate, each of the reference rotational angle signal 360 ° length of fraction L _0, L 0 _'from the value of the acceleration distance d _0' = 83.9 [mm] can also be calculated.

Further, the acceleration distance d ₀ ′ may be calculated from the acceleration pattern (transport speed Vs ′, acceleration time ta ″, acceleration α) of (b) using the above formula 9 or 10. Here, the acceleration distance d ₀ ′ ′ = 81.9 [mm] is calculated. The acceleration distance d ₀ ″ = 1/2 × α × ta ″ × ta ″ [mm] and the acceleration distance d ₀ = 1/2 × α × ta × ta [mm]. From equation 2, the acceleration distance is d ₀ ″ = d ₀ × ta ″ × ta ″ / ta / ta [mm]. Further, the conveyance speed Vs ′ = α × ta ″.
Since [mm / s] and the conveyance speed Vs = α × ta [mm / s], the acceleration time ta ″ = Vs ′ / Vs × ta from these two equations. Therefore, the acceleration distance d ₀ ″ = d ₀ × (
Vs ′ / Vs) × (Vs ′ / Vs) [mm] holds. From this and the relationship of Vs ′ / Vs = L ₀ ′ / L ₀ , the acceleration distance d ₀ ″ =
_{d 0 × (L 0 '/} L 0) × (L 0' / L 0) [mm] ··· equation (12) holds. By using the equation (12), the value of the acceleration distance d ₀ of the reference mark plate, each of the reference rotational angle signal 360 ° length of fraction L _0, L 0 _'from the value of the acceleration distance d _0' It is also possible to calculate '= 81.9 [mm].

In the acceleration pattern (c), since the acceleration distance is fixed, the acceleration distance in the reference stamp plate is the same as the acceleration distance d ₀ = 86.0 [mm]. However, since the length corresponding to the reference rotation angle signal 360 ° is changed, the phase angle δn ′ ″ of each printing roller Rn (n = 1, 2, 3, 4) and the box making unit (slotter unit) S3 is changed. (N = 1, 2, 3, 4, 5) is a value different from the phase angle δn (n = 1, 2, 3, 4, 5) in the reference stamp.

FIG. 24 shows the printing roller Rn (n = 1, 2,...) And the box making part (slotter part) of the box making machine when the thickness of the printing plate is changed from 7.2 (mm) to 3.6 (mm). ) Is a flowchart showing the phase alignment procedure of S3. Since the box making speed Ns is constant, the rotational speed of each driving means of the box making machine must be changed at a ratio where the diameter of the printing roller Rn is changed. The belt conveyance speed V _s ′ is Vs ′ = Vs × 1031/1056. That is, the motor of each conveyance system is changed to a rotation speed of 1031/1056 × 100 = 97.63 (%) in accordance with the belt conveyance speed. Further, the phase angles of the printing rollers Rn (n = 1, 2,...) And the box making unit (slotter unit) S3 must also be changed. FIG. 24 shows the phase alignment procedure when the printing plate thickness is changed. Here, the difference from the phase alignment in the reference stamp plate is from step 3, so step 3 will be described.

In step 3, the control unit 11 determines an acceleration pattern of the paper feed roller 3. That is, the acceleration pattern (a) (conveyance speed Vs ′, acceleration α ′, acceleration time ta) obtained from the acceleration pattern of the paper feed roller 3 on the reference printing plate, and the acceleration pattern (conveyance speed Vs) of (b). ', Acceleration α, acceleration time ta ″) and an acceleration pattern (c) (conveying speed Vs ′, acceleration α ′ ″, acceleration time ta ′ ″) are selected. Then, the control means 11 calculates the acceleration distance from the selected acceleration pattern using the above formula 9 or formula 10. Here, the acceleration distance d ₀ ′ = 83.9 [mm] is calculated, and the acceleration distance d ₀ ″ = 83.9 [mm] is calculated (when the acceleration pattern (c) is selected, acceleration is performed). the distance _{d 0} is fixed).

After the acceleration distance d ₀ ′ or the acceleration distance d ₀ ″ is calculated in Step 3, the printing roller Rn and the box making unit are sequentially processed in the order of Step 4, Step 5, and Step 6 as in the case of the reference stamp. (Slotter part) Phase alignment of S3 is performed (FIG. 24). Table 1 shows the phase angles θn and δn (n = 1, 2, 3, 4, 5) of each printing roller Rn and post-processing apparatus (slotter unit) S3 in the reference stamp, and the respective when the stamp is changed. 6 is a table showing generalized phase angles θn ′, θn ″, θn ′ ″ (n = 1, 2, 3, 4, 5) of each printing roller Rn and post-processing device S3 for each acceleration pattern. . Table 2 shows the phase angle θn and δn (n = 1, 2, 3, 4, 5) of each printing roller Rn and the post-processing device (slotter unit) S3 in the reference printing plate, and when the printing plate is changed. Phase angles θn ′, θn ″, θn ′ ″ and δn ′, δn ″, δn ′ ″ (n = 1, n) of each printing roller Rn and post-processing device (slotter unit) S3 for each acceleration pattern 2, 3, 4, 5) is a table in which specific numerical values are substituted (for θn, see paragraphs 0067 and 0068). Further, Table 3, for the upper stage, the virtual feed position _{P 0} from each print roller Rn in the reference printing plate, post-processing apparatuses distance to (slotter section) S3 Yn (n = 1,2,3,4, 5) and the virtual feed positions P ₀ ′, P ₀ ″, P ₀ ″ ″ (= P ₀ ) for each acceleration pattern when changing the printing plate, to each printing roller Rn, post-processing device (slotter unit) This is a table showing distances Yn ′, Yn ″, Yn ′ ″ (n = 1, 2, 3, 4, 5) up to S3 by substituting specific numerical values. Deviation (n = 1, 2, 3, 4, 5) from the printing position of each printing roller Rn and post-processing device (slotter unit) S3 of the sheet-like workpiece on the plate, and acceleration at the time of changing the printing plate Displacement from the printing position of each printing roller Rn and post-processing device (slotter unit) S3 of the sheet-like workpiece for each pattern It is the table | surface which substituted and showed specific numerical values to dn ', dn'',dn''' (n = 1, 2, 3, 4, 5).

FIG. 21 is a graph showing the result of phase matching of each of the drive units. The horizontal axis represents the distance from the virtual delivery position P ₀ ′, and the vertical axis represents the phase angle from the virtual delivery position P ₀ ′. Peripheral diameter of the printing roller Rn thickness of printing plate Ra is 3.6mm from 7.2mm decreases (φ336.1 → φ328.1) for the sheet interval _{L 0} also decreases (1,056 (mm) → 1,031 (mm)). Each printing roller Rn is provided with a phase angle of the value shown in the figure, and the phase synchronization control is performed. The roller (including the printing roller Rn and the box making part S3) that is farther from the virtual delivery position P ₀ ′ has a larger amount of change. For example, the printing roller R ₄ has 271.7 [°] → 312.5 [°] ( +40.8 [°]), and the slotter portion becomes 230.1 ° → 287.4 [°] (+57.3 [°]).

In the above description, the range (printing position) to be printed and each printing are described by taking the case where the range (printing position) to be printed of the sheet-like workpiece W starts from the front end Wa (see FIG. 25) as an example. Although the sheet-like workpiece feeding method in which the printing plates Ra of the rollers Rn coincide with each other has been described, the feeding method is such that the range (printing position) where the sheet-like workpiece W is to be printed is not from its front end Wa. Of course, the present invention can also be applied to a case where the position starts from an arbitrary position Wb. For example, when the range (printing position) to be printed of the sheet-like workpiece W starts from a position Wb 1 [mm] from the front end Wa, the circumferential length L ₀ (reference rotation angle) of the printing roller Rn on the reference printing plate A correction value is given to each printing roller Rn by a phase angle corresponding to γ = 1 / L ₀ × 360 [°] using a length L ₀ ) corresponding to a signal 360 [°]. If correction is made in this way, then the phase alignment with the reference stamp plate may be performed in the procedure described above. Similarly, in the phase alignment when the printing plate is changed, first, the circumferential length L ₀ ′ (the length of the reference rotation angle signal 360 [°] ′ L ₀ ′) of the printing roller Rn when the printing plate is changed is used. , Γ ′ = l / L ₀ ′ × 360 [°], a correction value is given to each printing roller Rn, and the phase adjustment at the time of changing the printing plate is performed by the procedure described above. Just do it. Here, with respect to the post-processing apparatus (slotter unit) S3, the processing position with respect to the sheet-like workpiece W is not affected regardless of the range (printing position) where the sheet-like workpiece W is to be printed. There is no need to give

  Here, in the vicinity of the printing rollers (R1 to R4), as shown in FIGS. 11, 12, 15, 17, and 25, the ink supply roll Ri that contacts the printing plate Ra and the ink that stores the printing ink are used. A chamber Ikcb is provided, and printing ink is supplied from the ink chamber Ikcb to the surface of the ink supply roll Ri, and this printing ink is transferred to the printing plate Ra. In the present embodiment, the printing rollers (R1 to R4) are driven by the driving means M6, and the ink supply roll Ri is driven by the driving means M7 (FIGS. 2 and 22). It is rotating according to the peripheral speed of the rollers (R1 to R4).

1 is a perspective view of a sheet-like workpiece feeding device according to a first embodiment of the present invention. It is a figure explaining the structural example of the drive means of the delivery apparatus of the sheet-like workpiece | work of the said embodiment. It is sectional drawing of the delivery apparatus of the sheet-like workpiece | work of the said embodiment. It is a top view which shows the delivery apparatus of the sheet-like workpiece | work of the said embodiment. It is sectional drawing which shows the drive means of the paper feed roller of the feeding apparatus of the sheet-like workpiece of the said embodiment. FIG. 6A is a cross-sectional view showing a cam mechanism that raises and lowers the great of the above embodiment, and FIG. 6B is a side view showing the cam mechanism that raises and lowers the great of the present embodiment. It is sectional drawing which shows the cam mechanism of the great embodiment of the said embodiment, and the drive means attached to this. It is the flowchart which showed the procedure of the setting of each drive part of the said embodiment. One cycle (one cycle) of the sheet-like workpiece W when each drive unit is synchronously driving the rotation of the paper feed roller and the raising / lowering of the great at the time of driving in the above embodiment is defined as a rotation angle of 360 °. FIG. 4A is a diagram showing the angle as a reference, and FIG. 4A is a diagram showing the ratio of acceleration / constant speed / deceleration of the paper feed roller with respect to the rotation angle of 360 °, and FIG. It is the figure showing the mode of the raising / lowering of the great with respect to. It is sectional drawing explaining the state stopped in order from the back side of the several paper feed roller of the said embodiment. It is a schematic diagram which shows the printing unit of this Embodiment. It is sectional drawing which shows the example of the printing unit of a conventional apparatus. It is sectional drawing which shows the example of a conventional apparatus. It is a figure explaining the structural example of the drive means of a conventional apparatus. FIG. 5 is a schematic side view of a box making machine including a sheet feeding unit, a printing unit, and a box making unit (slotter unit) used in a sheet-like workpiece feeding method according to a second embodiment of the present invention. It is a graph showing the change of the conveyance speed of a sheet-like workpiece | work when the sheet-like workpiece delivery apparatus used for the sheet-like workpiece delivery method of this Embodiment sends a sheet-like workpiece | work on a conveyance belt via a feeder roller. The distance of each drive unit when the sheet-like workpiece is continuously conveyed and printed by the box-making machine used in the sheet-like workpiece feeding method of the present embodiment and further grooved by the box-making portion is determined. It is a figure explaining a relationship. Regarding the sheet-like workpiece feeding method according to the present embodiment, the conveyance speed when the sheet-like workpiece feeding device sends the sheet-like workpiece W onto the conveyance belt via the feeder roller when the printing plate thickness of the printing roller is changed. It is a graph showing the change of. It is the figure which compared the relationship between the said acceleration pattern and acceleration distance of the paper feed roller before a printing plate change, and after a printing plate change about the sheet-like workpiece | work delivery method of this Embodiment. It is a graph showing the result at the time of performing the phase alignment of each said drive part in a reference | standard printing plate using the sheet-like workpiece | work delivery method of this Embodiment. It is a graph showing the result at the time of performing the phase alignment of each said drive part at the time of changing a printing plate thickness using the sheet-like workpiece | work delivery method of this Embodiment. It is a figure explaining the structural example of the drive means of the box making machine used for the sheet-like workpiece | work delivery method of this Embodiment. It is the flowchart which showed the procedure at the time of carrying out the phase alignment of each drive part of the box making machine in the case of a reference | standard stamp using the sheet | seat workpiece | work delivery method of this Embodiment. It is the flowchart which showed the procedure at the time of carrying out the phase alignment of each drive part of a box making machine at the time of changing a printing plate thickness using the feeding method of the sheet-like workpiece | work of this Embodiment. A sheet-like work (the area to be printed starts not at its front end but at an arbitrary position) is continuously conveyed and printed by the box making machine used in the sheet-like work feeding method of the present embodiment, and further It is a figure explaining the relationship of the distance of each drive part at the time of groove cutting etc. by a box making part.

Explanation of symbols

S1 Sheet-like work feeding device (paper feeding unit),
S2 printing unit (printing section),
S3 Box making (slotter), post-processing equipment,
2 mounting table, 2a opening, 2b, mounting surface, 2c one side (both left and right walls),
3, 3a, 3b, 3c, 3d paper feed roller,
3c, 3d Paper feed roller on the rear side,
4 Great,
10, 10m, 10j feeder roller (feeder roller on the feeding device side),
11 Control means,
43 Conveyor belt,
44 first drive roller;
45 second drive roller,
46 Steering shaft,
49, 50 tension roller,
51, 52, 53 Auxiliary rollers,
56 Suction box,
M3 paper feed roller driving means,
M4a Great drive means,
M4b Great drive means,
M10 feeder roller drive means,
M6 printing roller drive means,
M7 ink supply roll drive means,
K Great cam mechanism,
Q suction means,
R1, R2, R3, R4 printing rollers,
Ra stamp plate,
Ri ink supply roll,
δ ₁ , δ ₂ , δ ₃ , δ ₄ printing roller phase angle,
Phase angle of δ ₅ box (slotter)

Claims (10)

A plurality of paper feed rollers for feeding the lowermost sheet-like work among the stacked sheet-like works to the printing unit side, and a plurality of paper feed rollers arranged for each drive shaft of the paper feed rollers to rotate the paper feed rollers, respectively . a first driving means, separable Great for Therefore adjust the vertical movement of said paper feed roller and the lowermost sheet workpiece, a second drive means for vertical movement of the grate fed sheet-like A feeder roller for transferring the workpiece to the printing roller of the printing unit; a third driving means for rotationally driving the feeder roller; and a control means for controlling the driving means , the first, second and third Driving means are arranged independently, and an acceleration pattern of the paper feed roller is determined by the control means, and the first and second are determined based on the acceleration pattern. Beauty third sheet-like workpiece delivery device characterized by a drive means and the printing roller of the printing unit phase synchronization control that works performed. Based on the acceleration pattern, the control means calculates an acceleration distance from the start of feeding of the sheet-like workpiece to a conveyance speed, and a phase corresponding to the position of the printing roller of the printing unit from the acceleration distance value. 2. The sheet workpiece feeding device according to claim 1, wherein an angle is set . The printing unit includes a conveyance belt that conveys the sheet-like workpiece, and the most upstream conveyance roller among the conveyance rollers of the conveyance belt is also used as a lower roller of the feeder roller, Based on the acceleration pattern, the control unit calculates an acceleration distance from the start of feeding of the sheet-like workpiece to the conveyance speed, and the value of the acceleration distance corresponds to the position of the printing roller of the printing unit. 2. The sheet workpiece feeding device according to claim 1, wherein a phase angle is set . After the grate is lowered by a predetermined amount from the highest position by the control means, the feeding roller rotates, and the lowermost sheet-like workpiece is brought into contact with the front gauge, so that the lowermost sheet-like workpiece is fed out. The sheet-like workpiece feeding device according to any one of claims 1 to 3, characterized in that is set . A plurality of paper feed rollers for feeding the lowermost sheet-like work among the stacked sheet-like works to the printing unit side, and a plurality of paper feed rollers arranged for each drive shaft of the paper feed rollers to rotate the paper feed rollers, respectively. 1 driving means, a grate for adjusting the contact and separation between the paper feed roller and the lowermost sheet-like work by its raising and lowering operation, a second driving means for raising and lowering the grate, and the fed sheet-like work A first roller, a third roller and a third roller for rotating the feeder roller, and a controller for controlling the driver. The present invention relates to a sheet-like workpiece feeding method using a sheet-like workpiece feeding device in which driving means are arranged independently of each other. And a phase-synchronizing control for linking the first, second and third driving means with the driving of the printing roller of the printing unit based on the acceleration pattern. The work feeding method. Based on the acceleration pattern, the control means calculates an acceleration distance from the start of feeding of the sheet-like workpiece to a conveyance speed, and according to the position of the printing roller of the printing unit from the value of the acceleration distance. 6. The sheet workpiece feeding method according to claim 5, wherein the phase angle is set . The control means lowers the great amount from the highest position by a predetermined amount, and then rotates the paper feed roller to bring the lowermost sheet-like workpiece into contact with the front gauge, thereby lowering the sheet shape of the lowermost layer. 7. The sheet workpiece feeding method according to claim 5, wherein a workpiece feeding position is set . On the downstream side of the printing unit, a ruled line applying unit for applying a ruled line to the sheet-like workpiece, and a post-processing device requiring phase alignment, such as a slotter unit or a die cutter unit for making a predetermined cut into the sheet-like workpiece, are arranged. And the drive means of these post-processing devices are independent of the drive means of the sheet-like workpiece feeding device and independent of the drive means of the printing roller of the printing unit, Based on the acceleration pattern, the control means calculates an acceleration distance from the start of feeding of the sheet-shaped workpiece to the conveyance speed, and calculates a phase angle corresponding to the position of the post-processing apparatus from the acceleration distance value. The sheet-like workpiece feeding method according to any one of claims 5 to 7, wherein phase alignment is performed . The control means determines the rotation speed of the printing roller so that the peripheral speed of the printing roller when the printing plate thickness of the printing roller of the printing unit is changed matches the conveyance speed of the sheet-like workpiece. 9. The acceleration pattern of the paper feed roller is determined so that a repetition cycle of the acceleration pattern of the paper feed roller and a rotation cycle of the printing roller coincide with each other. The sheet-like workpiece feeding method described. When the control means determines an acceleration pattern of the paper feed roller when the printing plate thickness of the printing roller of the printing unit is changed, an acceleration pattern at a predetermined printing plate thickness is used as a reference acceleration pattern. The method for feeding a sheet-like workpiece according to any one of claims 5 to 9 , wherein an acceleration pattern at the time of changing the thickness of the printing plate is determined .

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