JPH0374914B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) This invention is directed to separating an impression cylinder and a transfer cylinder which rotate opposite each other at a predetermined timing using a separation cylinder means, and then moving the impression cylinder at a predetermined timing. The present invention relates to an intermittent feed control device for continuous paper for use in a printing machine that performs printing by intermittently feeding continuous paper inserted between a transfer cylinder and a paper feeder.

(Prior Art and its Problems) Conventionally, business forms have generally been printed using high-speed form rotary presses. However, form rotary presses are very large, and it takes a lot of time to switch and adjust printing patterns, and a large amount of paper is wasted during the adjustment.
Various simple offset form printing machines have been developed for printing small lots of business forms. In general, these form printing machines use a continuous press that is inserted between the impression cylinder and the blanket cylinder at a predetermined timing, and the impression cylinder and the blanket cylinder, which rotate facing each other, are separated from each other at a predetermined timing. Form printing is performed by feeding paper intermittently, but since the timing of the intermittent feeding is controlled by mechanical means such as a ratchet mechanism, if the vertical size of the continuous paper changes, for example, the ratchet This required countermeasures such as replacing the gears and changing the number of teeth depending on the vertical size of the continuous paper, or replacing the blanket cylinder itself with one with a different diameter. Therefore, although there is a demand for simple and easy form printing on continuous papers of various vertical sizes, there has been a problem in that this demand cannot be fully satisfied.

(Object of the Invention) Therefore, the object of the present invention is to solve the above-mentioned problems of the prior art, and to simply and easily perform desired printing on continuous paper of various vertical sizes without replacing mechanical parts. An object of the present invention is to provide an intermittent feed control device for continuous paper for realizing an offset printing machine that can perform continuous printing.

(Means for Achieving the Object) In order to achieve the above object, the continuous paper intermittent feed control device for an offset printing press according to the present invention has an impression cylinder and a transfer cylinder mounted thereon that rotate oppositely. It is applied to an offset printing machine that prints by moving continuous paper inserted between the impression cylinder and the transfer cylinder by driving a paper feeding means, and the transfer cylinder has a small diameter part on a part of its outer periphery. has
and a means for separating the impression cylinder and the transfer cylinder, a means for generating a reference signal related to a rotational phase of the transfer cylinder, and a means for inputting vertical size information of the continuous paper; The reference signal and the vertical size information are received, the rotational phase of the transfer cylinder is detected based on the reference signal, and the transfer cylinder means is connected to the impression cylinder at a rotational phase before the printing start rotational phase of the continuous paper. the impression cylinder and the transfer cylinder are mounted in a state where the impression cylinder faces the small diameter portion of the transfer cylinder, and the impression cylinder and the transfer cylinder are driven to separate from each other at a print end rotation phase indicated by the vertical size information; Control means for controlling the paper feeding means to start feeding the paper after the cylinder is loaded and to end the paper feeding after the cylinder is removed, thereby feeding the paper by an amount corresponding to the vertical size of the continuous paper. It is configured with the following.

(Embodiment) FIG. 1 is a schematic cross-sectional view of a multicolor offset printing machine capable of printing continuous paper to which the intermittent feed control device for continuous paper according to the present invention is applied. As shown in the figure, a blanket cylinder 2 is disposed approximately in the center of the printing press body 1, and a plate cylinder that can be freely detached from and attached to the blanket cylinder 2 is located at an upper rear position and a lower rear position of the blanket cylinder 2. 3 and 4 are arranged respectively. At the rear of these plate cylinders 3, 4, there are plate supply/discharge units 5, 6 that enable automatic plate supply/discharge to the corresponding plate cylinders 3, 4, and plate supply/discharge units 5, 6 for automatically supplying/discharging plates to/from the corresponding plate cylinders 3, 4, as well as plate supply/discharge units 5, 6 for automatically supplying/discharging plates to/from the corresponding plate cylinders 3, 4. Inking units 7 and 8 for inking are each removably attached, and supply and discharge plate trays 9 and 10 are detachably attached to each plate supply and discharge unit 5 and 6, respectively.

On the other hand, at the lower front position of the blanket body 2,
An impression cylinder 11 that can be freely detached from and attached to the blanket cylinder 2 is arranged, and paper feeding of the continuous paper 12 passed between the impression cylinder 11 and the blanket cylinder 2 is carried out at the rear and front positions of the lower part of the impression cylinder 11. A pin feed tractor 13 and a suction conveyor 14 are respectively provided for control. The pin feed tractor 13 and the suction conveyor 14 control the paper feed of the continuous paper 12 intermittently in relation to the timing of the separation and landing of the impression cylinder 11 and the blanket cylinder 2.
2, printing is performed. Also,
A folding machine 17 having a swing guide 15 and a continuous paper holder 16 for storing printed continuous paper 12 in an alternately folded manner is arranged at the front of the printing press body 1.

In addition, at the upper front position of the blanket body 2,
When cleaning the blanket, the blanket body 2
Cleaning liquid supply unit 1 for supplying cleaning liquid to
8 and a wiping unit 19 for wiping off the cleaning liquid are each removably attached.
Furthermore, an impression cylinder cleaning unit 29 is provided below the impression cylinder 11 to remove dirt from the surface of the impression cylinder.

A main motor 20 is installed in the lower space of the printing press body 1, and the blanket cylinder 2 and suction conveyor 14 are driven by the main motor 20 via, for example, a belt. The cylinder 11 is mechanically interlocked with gears disposed to mesh at one end of each cylinder, forming a drive system using a main motor 20. Drive devices or actuators such as pulse motors and solenoids are attached to the remaining mechanical parts as necessary, and sensors and switches are installed at predetermined and necessary locations as information input means for controlling the drive timing of these drive systems. It is installed.

FIG. 2 schematically shows a control system used in this printing press, in which a microprocessor 21 is connected to external devices 24 to 28 via a control bus 22 and each control section 23. The system program is stored in an external storage device 24 such as a floppy disk, and is given to the microprocessor 21 at the beginning of system startup. The operator gives commands through an operation panel 25 installed on the side of the printing press, and the microprocessor 21 receives necessary information from sensors and switches 26 and 27 and controls the motor according to the system processor. The drive system 28 such as a solenoid or the like is operated as appropriate.

Paper Conveyance System In this printing machine, the paper conveyance system is composed of a pin feed tractor 13 and a suction conveyor 14, and is connected to the rotation of the blanket cylinder 2 and the impression cylinder 11 and the take-off cylinder based on commands from the microprocessor 21. to control the paper feed of the continuous paper 12. The continuous paper 12 used has marginal punches on both left and right ends that engage with the pins of the pin feed tractor 13, and even if it is folded paper with creases or perforations in the vertical direction, the roll paper does not have creases. It may be. In the following description, a case will be described in which folded paper is used.

Pin Feed Tractor Configuration FIGS. 3A, 3B, and 3C are a plan view, a front partial sectional view, and a right side view, respectively, showing the mechanism of an embodiment of the pin feed tractor 13. This pin feed tractor 13 is constructed by joining the assembly reference planes of the left tractor frame 1320 and the right tractor frame 1321 to the reference planes of high-precision linear bearing movers 1303 and 1304, respectively, aligning them in parallel, and then fixing them. Tractor frame 132
0,1321 for left and right tractor units 130
1,1302 are attached to form a unit. In other words, the left and right tractor units 1301 and 1302 can be aligned in parallel without using a jig or the like. Furthermore, the mover 1303 on the left side is the guide rail 13 of the linear bearing.
05 in the fixed position, and the right side mover 1304 is not fixed but moves on the guide rail 130.
55 in the left and right directions, and the interval between the left and right tractor units 1301 and 1302 can be arbitrarily changed according to the paper width of the continuous paper 12.

Mover 1304 of right tractor unit 1302
A screw 1307 with a flat ball is provided at the bottom of the screw 1307, which is configured to rotate according to the rotation of the lever 1306.
are bored and screwed upward, and the lever 130
Screw 1 by turning 6 counterclockwise.
307 upward and press the flat ball at the tip against the guide rail 1305 of the linear bearing,
Due to the pressing force, the right tractor unit 1302
is designed to be locked at a desired position. A similar screw with a flat ball is used to fix the left tractor unit 1301 in place.

The left and right tractor units 1301 and 1302 each have paper conveyance timing belts 1308 and 1309 wound around a pair of front and rear pulleys, and the left and right front pulleys are connected by a spline shaft 1310, which is rotatably driven. By doing so, the left and right paper conveyance timing belts 130
8,1309 move forward and backward in synchronization.
Left and right paper conveyance timing belts 1308, 1309
Paper conveying pins 1311 are attached at regular intervals to the paper conveying pins 1311, and by engaging the marginal punches at both the left and right ends of the continuous paper 12 and moving the paper conveying timing belts 1308 and 1309 back and forth in cycles, continuous The paper 12 is fed forward and backward. In order for the paper to be fed in a circle, the phases of the paper conveyance pins 1311 in the left and right tractor units 1301 and 1302 must match accurately, and this phase alignment of the paper conveyance pins 1311 is performed as described below. . That is, as shown in FIG. 3E, the left and right front pulleys 1322 and 1323 are connected to the left and right bearings 132 in advance outside the unit.
4 and 1325 respectively, and after fitting, the side surfaces of front pulleys 1322 and 1323 are brought together and the spline shaft 1310 is pushed in. After performing phase alignment using the spline shaft as a reference, the left and right bearings 1324 and 1325 are fitted. Front pulley 132
2 and 1323 are fixed with screws 200 to establish an accurate phase relationship, and finally the pair of front pulleys 1322 and 1323 are assembled into the left and right tractor units 1301 and 1302, respectively. According to this method, as shown in Fig. 3E, the fixing screw 200 is attached from the outside of the front pulleys 1322, 1323, so phase alignment can be performed outside the machine, and when phase alignment is performed on the machine. The work is easier and the accuracy is improved compared to the previous method.

In addition, left and right tractor units 1301, 1302
Paper holding lids 1312 and 1313 are respectively disposed to cover the upper surface of the paper conveying pin 1311, and a paper receiving guide plate 131 is provided on the lower surface side of the paper holding lids 1312 and 1313, respectively.
4 and 1315 are respectively disposed, and the left and right ends of the continuous paper 12 are sandwiched between them to guide the paper feed of the continuous paper 12 while preventing the marginal punch from coming off the paper conveyance pin 1311.

In order to remove paper dust attached to the marginal punch of the continuous paper 12, the left and right tractor units 130
Paper dust removing sections 1316 and 1317 are provided at the rearmost ends of the paper sheets 1 and 1302 (ie, on the inlet side of the continuous paper 12), respectively. This paper dust removing section 1316,
1317 is provided with paper dust removal brushes (not shown) and appropriate spaces facing each other above and below the passing surface of the continuous paper 12, and this space is attached to the printing press main body 1 using, for example, a flexible tube material. The space is connected to a suction blower (not shown) provided therein, and the air in the space is suctioned and exhausted by the suction blower, thereby suctioning and discharging the paper dust.

In addition, a paper presence/absence limit switch 1318 is attached to the lower center of the paper receiving guide plate 1314 of the left tractor unit 1301 on the fixed side.
An operating spring 1319 for operating this paper presence/absence limit switch 1318 is connected to the paper receiving guide plate 13.
It projects upward at the left end of the continuous paper 14, and when the continuous paper 12 is set, an operating spring 1319 is pushed down and a paper presence/absence limit switch 1318 is activated, thereby detecting the presence or absence of the continuous paper 12.

The unit of the pin feed tractor 13 configured as described above has left and right brackets 182,
It is installed between the left and right main frames 180 and 181 of the printing press main body 1 via the main frame 183 . As shown in FIG. 3D, the left and right brackets 182, 183 consist of a frame mounting part 184 and a rail receiving part 185, and the rail receiving part 185 has a groove 18 for receiving the guide rail 1305 of the linear bearing.
6 is cut, and the guide rail 1305 is fitted into this groove and fixed with a screw 187.

The left and right brackets 182 and 183 are installed at predetermined positions on the left and right main frames 180 and 181, and the positioning when installed is done using the left and right main frames 18.
Each pair of positioning knob pins 188, 189 and 19 are formed in advance at predetermined positions of 0 and 181.
This is done using 0.191 as a reference. Knock pin 18
8 and 190 fit into positioning holes provided in the frame mounting portion 184 to connect the left and right brackets 182 and 1.
83 to the left and right main frames 180, 181, respectively.
Reference numerals 9 and 191 respectively regulate the inclination angle of the left and right brackets 182 and 183 at the regulated mounting positions (that is, the inclination angle of the pin feed tractor 13 to be mounted thereon).

By fitting and mounting the guide rail 1305 of the linear bearing on the rail receiving portion 185 of the left and right brackets 182, 183, which are thus precisely positioned and fixed at the predetermined positions of the left and right main frames 180, 181 of the printing press main body 1. Therefore, it becomes possible to easily mount the pin feed tractor 13 at a predetermined position on the printing press main body 1 at a predetermined angle with high precision. When the main body is attached, the paper setting reference position (P ₁ ; see FIG. 9) of the pin feed tractor 13 is located a predetermined distance H from the printing start position P ₂ .

As described above, the left and right tractor units 130
1,1302 parallel alignment and paper transport pins 1
Phase matching of 311 is done by moving element 1 of linear bearing.
This has already been done when fixing the left and right tractor units 1301 and 1302 to 303 and 1304, respectively.
3, 1304 only moves in parallel in the left and right direction on the guide rail 1305, so the above parallel relationship and phase relationship after adjustment are then changed to the guide rail 13.
05 is not damaged until it is attached to the left and right brackets 182, 183, so when the pin feed tractor 13, which has been assembled into a unit and has been completed, is attached to the printing press body 1, the left and right tractor units 1301, There is no need to perform troublesome adjustments such as parallel alignment of the paper transport pins 1302 and phase alignment of the paper conveyance pins 1311. Furthermore, since these adjustments can be made outside the machine before the pin feed tractor 13 is attached to the printing press main body 1, the adjustments can be made easily and accurately.

A tractor driving DC servo motor 192 is disposed on the outside of the left main frame 180 of the printing press body 1, and a pulley 193 connected to the rotating shaft of this DC servo motor 192 is disposed on the inside of the left main frame 180. Similarly, a timing pulley 194 provided inside the left main frame 180
A timing belt (not shown) is wound between the pulley 193 and the timing pulley 194, and the timing pulley 194 is positioned and fixed on the spline shaft 1310.
A drive system is configured so that the left and right paper conveyance timing belts 1308 and 1309 are moved forward and backward by rotating the timing belt 310. And DC servo motor 19
The rotary encoder 196 is connected to the DC servo motor 19 in order to know the number of rotations (i.e. paper conveyance speed).
2 rotation shaft, and spline shaft 1.
310 (i.e., the position of the paper conveyance pin 1311), another rotary encoder 197 is installed outside the left main frame 180 on the pulley 1.
It is attached to the rotating shaft of 94.

In front of the pin feed tractor 13, upper and lower guide plates 198, 199 are installed to extend to just before the impression cylinder 11, and the continuous paper 12 sent out from the pin feed tractor 13 is inserted between them to guide the bracket cylinder 2.
and an impression cylinder 11.

Suction Conveyor Configuration Figures 4A to 4D are mechanical explanatory diagrams showing one embodiment of the suction conveyor 14. This suction conveyor 14 is capable of switching the suction force in three stages, and also has a variable suction width according to the paper width. . FIG. 4A shows the impression cylinder 11
It is a left side explanatory view showing the attachment position of the suction conveyor 14 to the. As shown, the suction conveyor 14
In this case, the paper guide 1401 is located at a position slightly advanced from the top of the impression cylinder 11 in the rotating direction, and the conveyor belt 1402 moves obliquely between the blanket cylinder 2 and the impression cylinder 11 with its conveyance surface being approximately horizontal. It is positioned and fixed between the left and right main frames 180 and 181 (see FIG. 4C) of the printing press main body 1 so as to horizontally guide the continuous paper 12 that has been rolled in the forward discharge direction. Further, above the suction conveyor 14, a blowing means consisting of a paper pressing fan 30 is arranged to blow air toward the top surface of the suction conveyor 14 along its longitudinal direction, so that the continuous paper 12 floats above the top surface of the conveyor during paper feeding operation. We are trying to prevent this.

4B, 4C, and 4D are plan, front, and right side mechanical explanatory views of the suction conveyor 14, respectively. A suction duct 1404 having a large number of suction slits 1403 on the upper surface runs in the center left and right direction of the suction conveyor 14, and in front and behind this suction duct 1404, a pair of pulleys 1405 are provided for each two suction slits. 14
06 is provided. One conveyor belt 1402 is wound around each pair of front and rear pulleys 1405, 1406, and a gear 14 is attached to the left end of the common rotation shaft 1407 of the front pulley 1405.
08, and this gear 1408 is engaged with a drive gear 1409 which is mechanically connected to the main motor 20 via, for example, a belt, and the conveyor belt 1402 is fixed in the forward direction according to the rotation of the main motor 20. I'm trying to speed up. Conveyor belt 1
402 is provided with a large number of suction holes 1410 at positions corresponding to the suction slits 1403. With this configuration, the continuous paper 12 sent from between the blanket cylinder 2 and the impression cylinder 11 is sucked onto the upper surface of the conveyor 1402 and guided toward the folding machine 17 in the front.

The left end of the suction duct 1404 is the main frame 1
It communicates with a suction blower (not shown) via a connecting portion 1411 provided on the outside of the suction duct 80, and air in the suction duct 1404 is sucked and exhausted in response to the rotation of the suction blower. On the other hand, there are two openings 1412 and 1 at the right end of the suction duct 1404.
413, a main shutter 1414 is provided corresponding to one opening, and an auxiliary shutter 1415 is provided corresponding to the other opening. And these main shutters and auxiliary shutters 1414,
1415 to connecting members 1416 and 1417, respectively.
Suction force switching solenoid 1418, 141 via
Solenoid 1
When 418 and 1419 are not energized, the main and auxiliary shutters 1414 and 1415 close to the opening 141, respectively.
2, 1413 is closed, and when energized, the corresponding main shutter 1414 and/or auxiliary shutter 14
15 slides downward to open openings 1412 and/or 1413.

FIG. 4E is an explanatory cross-sectional view showing the shutter portion. Main/auxiliary shutters 1414, 1415
is located in the shutter room 1425, and the main
When the auxiliary shutters 1414 and 1415 are in the "open" state, outside air sucked from below the shutter chamber 1425 is drawn into the suction duct 1404 through the openings 1412 and 1413. In this way, the amount of outside air suctioned into the suction duct 1404 from the openings 1412 and 1413 is changed according to the opening and closing of the main and auxiliary shutters 1414 and 1415, and the amount of outside air suctioned from the suction hole 1410 of the conveyor belt 1402. By adjusting the , it is possible to switch between three levels of suction power as shown below.

Main shutter Auxiliary shutter Suction force Closed Closed Large Closed Open Medium Open Open Small Also, the state of the solenoids 1418 and 1419 (i.e. the main and auxiliary shutters 1414 and 1415
In order to know the opening/closing state of the connecting member 1416,1
417, respectively, and photoelectric sensors 1428 and 1429, as shown in FIG. 4E, are respectively arranged at positions where light is shielded when energized (positions in FIG. 4E, a).

Two-stage sliders 1430 and 1431 are arranged in close contact with each other on the left side of the upper surface of the suction duct 1404, and the first stage 1430 of the two-stage slider
By sliding the slit 1403 to the right with a knob 1432, the slit 1403 can be closed within a predetermined range, thereby making it possible to adjust the suction width to any width between the maximum suction width and the minimum suction width. It's like this. 1st stage slider 14
4F shows how the second-stage slider 1431 is driven to push out as the slider 30 moves. A pair of suction slits 1403 are provided on the second stage slider 1431.
An opening 1433 having the same shape as that of the suction slit 1403 is provided at a corresponding position, and a larger opening 1434 that can accommodate another pair of suction slits 1403 is provided at a corresponding position. The suction slits are successively shielded from the left side. The change in the suction width at each step shown in FIG. 4F is represented by the horizontal bar in FIG. 4G. In this way, a large amount of shielding can be obtained with a small amount of movement. Note that the second stage slider 143
1 is engaged with a return means (not shown) such as a spring so that it returns to its original position (positions a and b in FIG. 4F) when the pressing force of the first stage slider 1430 is removed.

Separation cylinder mechanism FIG. 5A is an explanatory diagram of a separation cylinder mechanism for the impression cylinder 11 with respect to the blanket cylinder 2. As shown in the figure, the impression cylinder 11 is connected to the support shaft 1 through left and right bearings 1101.
It is rotatably arranged around the impression cylinder 102.
1, the gear 1103 disposed at one end of the impression cylinder 11 is driven by the gear 2 at one end of the plunger cylinder 2, which is driven by the main motor 20.
This is done by meshing with 01. That is, the impression cylinder 11 is always driven to rotate regardless of the state of the take-off cylinder. Both ends of the support shaft 1102 are eccentric shafts 1
104, 1105, and these eccentric shafts 1104, 1105 are connected to the left and right main frames 18.
Eccentric bearing part 15 arranged on the outside of 0.181
0,151, respectively. The left eccentric shaft 1104 is connected to the rotating shaft of an impression cylinder pulse motor 153 via a helical coupling 152, and by rotationally driving the left eccentric shaft 1104 by the impression cylinder pulse motor 153, the support shaft 110 is rotated.
2 is moved, and the distance between the axes of the impression cylinder 11 and the blanket cylinder 2 is changed accordingly, so that the impression cylinder 11 is moved into and out of contact with the blanket cylinder 2.

FIG. 5B is an explanatory view schematically showing the state of the unloading/unloading cylinder. FIG. 5B a shows the state when the cylinder is unloaded, and FIGS. 5B b and c show the state when the cylinder is attached. In the figure, point B is the center of the blanket body 2, and point I
indicates the center of the support shaft 1102 (ie, the center of rotation of the impression cylinder 11), and point S indicates the center of the left and right eccentric shafts 1104, 1105 (ie, the center of swing of the impression cylinder 11). At the time of detachment in Figure 5a, the straight line SI and the straight line
BI forms a large angle as shown in the diagram,
The left eccentric shaft 1104 is driven by the impression cylinder pulse motor 153.
As the angle is rotated counterclockwise in the diagram, this angle gradually becomes smaller, and accordingly, the impression cylinder 11 moves toward the point S.
The cylinder swings counterclockwise around , and the distance between the axes of the impression cylinder 11 and the blanket cylinder 2 (distance between points BI) gradually decreases. And the straight line SI is the 5th B
When the impression cylinder 11 reaches the position shown in Fig. b, it is attached to the blanket cylinder 2. In order to apply an appropriate printing pressure, the impression cylinder pulse motor 153 is further driven so that the straight line SI coincides with the straight line BI. 5th one a little before
The center of rotation I of the impression cylinder 11 is brought closer to the center B of the blanket cylinder 2 (that is, the distance between the axes is further reduced) until the state shown in FIG.

When changing the printing pressure depending on the printed material, for example, the impression cylinder pulse motor 153 is driven between the rotation angles of the eccentric shaft shown in FIGS. You just have to change it appropriately. However, for example, when trying to hold the impression cylinder 11 in a state close to the rotation angle of the eccentric shaft shown in Fig. 5B (b) (that is, when the printing pressure is relatively weak), the repulsive force from the blanket cylinder 2 is As is easily understood, a very large moment is applied to the impression cylinder pulse motor 153,
In order to stably support this large repulsive force, it would be necessary to use a very large pulse motor, so although it is possible, it is not necessarily practical.

Therefore, in a preferred embodiment, the position shown in FIG. ing. Fifth
At the position shown in Figure B, c, the straight line SI almost coincides with the straight line BI, so the repulsive force from the blanket cylinder 2 is only applied to the impression cylinder pulse motor 153 as a very small moment. Therefore,
It becomes possible to use a small pulse motor.
If the straight line SI coincides with the straight line BI and reaches the top dead center,
The moment applied to the impression cylinder pulse motor 153 is 0.
However, the impression cylinder pulse motor 153 moves the blanket cylinder 2 in any direction from the top dead center.
There is uncertainty as to whether the repulsion force will cause the rotation to occur, and the stability of the mechanism will be significantly impaired. Therefore, it is important to select the position shown in FIG. 5B, c, just before top dead center as the trunk mounting position, and in the preferred embodiment, the angle between the straight line BI and the straight line SI is about 5 degrees.

Advantages of using a pulse motor as the drive unit for the loading/unloading cylinder mechanism of the impression cylinder 11 include the following. First, since the loading speed can be easily controlled, there is less impact on the printing press, which extends the life of the machine. Second, it becomes possible to separate and release the cylinders at arbitrary phases, and it is possible to easily cope with changes in the vertical length of the paper to be printed.
Thirdly, when printing on continuous paper, it is possible to maintain the impression cylinder 11 in the unloading position when the blanket cylinder 2 is rotating while paper feeding is stopped. No unnecessary tension is exerted on the paper, and the marginal punch engaged with the pin 1311 of the pin feed tractor 13 is not damaged. Fourth, if more printing pressure than necessary is applied, the holding force of the impression cylinder pulse motor 153 will be exceeded and step-out will occur, so the impression cylinder 11 will naturally come into the detached state and serve as a safety device.

Next, the printing pressure adjustment spring mechanism will be described with reference to FIGS. 5A, 5C, and 5D.
FIG. 5C is a left side view of FIG. 5A, and FIG. 5D is an explanatory right side view. As shown in FIGS. 5A, 5C, and 5D, a cross-shaped printing pressure arm 154 is attached to the thrust bearing 15 on the outside of the left main frame 180 for the purpose of adjusting the printing pressure.
5 and a needle bearing 156, the support shaft 157 is reinforced by a pin block 173 and fixed to the left main frame 180. Correspondingly, on the outside of the right main frame 181, a cross-shaped printing pressure arm 158 is also provided with a thrust bearing 159 and a needle bearing 16.
The support shaft 161 is reinforced by a pin block 174 and fixed to the right main frame 181. Then, the left eccentric bearing part 150 is attached to the through hole in the center of the left printing pressure arm 154, and the left eccentric shaft 1104 is inserted therein, and the right eccentric shaft bearing part 150 is inserted into the through hole in the center of the right printing pressure arm 158. The core bearing part 151 is attached and the right eccentric shaft 1105 is inserted, and the support shaft 1102 swings in response to the swings of the left and right printing pressure arms 154, 158, and the impression cylinder 11 swings accordingly to complete the blanket. It is configured so that the pressing force (ie, printing pressure) on the cylinder 2 changes. The impression drum pulse motor 153 is placed and fixed on the left printing arm 154 and swings as the left printing arm 154 swings. The left and right printing pressure arms 154 and 158 are biased in the same swing direction (in the direction of body loading) by left and right printing pressure main compression springs 162 and 163 and left and right printing pressure auxiliary compression springs 164 and 165, respectively.
Its swing range is left and right impression cylinder stoppers 166, 16
7. When the rotational phase of the impression cylinder pulse motor 153 is at the cylinder release position (phase in FIG. 5B a), the left and right printing pressure arms 154, 1
58 are pressed against the impression cylinder stoppers 166 and 167, respectively, and the impression cylinder pulse motor 1
The rotational phase of 53 is the trunk mounting position (phase of Fig. 5B c)
, the left and right impression arms 154, 158 are separated from the impression cylinder stoppers 166, 167, respectively, due to the repulsive force from the blanket cylinder 2, and the repulsive force from the blanket cylinder 2 and the compression springs 162 to 16 are removed.
Each mechanical part is arranged in such a positional relationship that the machine stops when it is balanced with the repulsive force of 5. This makes it possible to arbitrarily adjust the printing pressure by changing the repulsive forces of the compression springs 162 to 165.

In this embodiment, as means for changing the repulsive force of the compression springs 162 to 165, the left and right pressure adjustment screws 165,
166 are arranged in conjunction with each other so that the degree of compression of the left and right printing pressure main compression springs 162 and 163 can be changed continuously. Further, these left and right printing pressure adjustment screws 165 and 166 are driven in conjunction with each other by a common drive mechanism (not shown) via left and right printing pressure adjustment worm wheels 167 and 168, respectively, so that equal printing pressure can always be obtained on the left and right sides. It is configured so that These left and right printing pressure adjustment screws 1
65, 166 and printing pressure adjustment worm wheel 16
7 and 168 are connected to the left and right main frames 18 via left and right printing pressure adjustment brackets 169 and 170, respectively.
It is fixed at 0,181. Further, the support shafts of the left and right impression cylinder stoppers 166, 167 and the left and right printing pressure auxiliary compression springs 163, 165 are fixed to the left and right main frames 180, 181 via left and right brackets 171, 172, respectively. In this embodiment, the left and right printing pressure auxiliary compression springs 164,
165 to ensure a constant printing pressure in advance, and also adjust the printing pressure by changing the degree of compression of the left and right printing pressure main compression springs 162, 163. Therefore, it is not necessary to use a very strong spring, and it is easier to change the degree of compression (ie, adjust the printing pressure).

In order to restrict the rotation range of the impression cylinder pulse motor 153 between the cylinder release position and the cylinder loading position, a stopper 175 is attached to the left eccentric shaft 1105 as shown in FIG. 5D, and the movable range of the stopper 175 is limited. The angle is limited to a predetermined angle by a stop bar pin 176. In order to know the rotational phase of the impression cylinder pulse motor 153 in this range, a cylinder release position photo sensor 177 and a cylinder loading position photo sensor 17 are placed on the left main frame 181 at a predetermined angle.
On the other hand, a sensor dog 179 that acts on these photo sensors 177 and 178 is attached to the left eccentric shaft 1105, and when the impression cylinder pulse motor 153 reaches a rotational phase corresponding to the cylinder unloading position and the cylinder loading position. The system detects when the rotation phase corresponding to the position is reached.

Folding Machine Configuration A folding machine 17 is arranged at the front position of the printing press body 1 in order to fold and store the printed continuous paper 12 sent out from the paper conveyance system having the above-mentioned mechanism. be. FIGS. 6A and 6B are explanatory diagrams showing an embodiment of the folding machine 17, and FIG. 6B is a perspective explanatory diagram thereof. The folding machine 17 according to this embodiment is configured so that it can always accurately fold and store the continuous paper 12 regardless of its vertical length.

A feed screw 1702 runs up and down inside a back box 1701 of the folding machine 7, and this feed screw 1702 is driven by a table lifting motor 1703 installed at the lowest part of the back box 1701. The feed screw 1702 has a pair of table support members 1706 and 1707 extending forward through two vertical openings 1704 and 1705 provided in parallel to the front pulse of the rear box 1701.
A base 1708 is fitted and supported, and by moving the base 1708 in the vertical direction according to the rotation of the feed screw 1702, the base 1708 is placed on the support members 1706 and 1707 via the legs 1709. The continuous paper holder (paper table) 16 is configured to be raised and lowered to any desired position. A guide rod 1710 is provided to extend in parallel with the feed screw 1702 to ensure stability in lifting and lowering, and a slide member 1711 provided at the front central position of the base 1708 is fitted into this guide rod 1710.

In order to change the effective length of the continuous paper holder (paper table) 16 in the front-rear direction according to the vertical size of the continuous paper 12, a plurality of notches are provided at the front and rear ends of the paper table 16, and the notches are A front frame 1712 and a rear frame 1713, which are formed by connecting a plurality of thin rods extending vertically through the frame at vertical positions, are slidable in the front-rear direction along the frame holding portion 1714.

Also, the continuous paper 1 stacked on the paper table 16
2, the folding machine 17
A pair of left and right support members 17 protrude forward from the rear main body frame 17A across the paper stacking section.
The light emitting side and the light receiving side of the first and second paper surface detection photoelectric sensors 1717 and 1718 are arranged parallel to the table surface at the tips of the paper sheets 15 and 1716, respectively, so that the stacking height of the continuous paper 12 reaches a predetermined height. If it reaches that point, light will be blocked. The first and second paper surface detection photoelectric sensors 1717 and 1718 are arranged at the first and second paper surface detection photoelectric sensors 1717 and 1718, respectively, with the lower end of the paddle 15 as a reference.
One of the photoelectric sensors 1717 and 1718 is selected depending on the vertical size of the continuous paper 12 during the folding operation. Then, in response to the detection of light blocking, the table lift motor 1703 is driven to lower the paper table 16 by a minute distance so that the top surface height of the continuous paper 12 stacked on the paper table 16 is always kept at the first or second predetermined level. Maintain the height and swing guide (paddle) described below
In combination with the control of the swing angle of the paper 15, it is possible to perform an appropriate folding operation according to the vertical size of the continuous paper 12.

For the purpose of regulating the lifting range of the paper table 16,
First and second table upper limit switches 1719 are located at predetermined positions within the rear box 1701.
1720 and a table lower limit switch 1721 are provided, and an operating member 1729 for operating these limit switches is attached at a corresponding position on the base 1708. first and second table upper limit switches 1719;
Reference numerals 1720 correspond to the first and second paper surface detection photoelectric sensors 1717 and 1718, respectively, when the paper table 16 comes to the first or second upper limit position with no paper on the paper table 16. The mounting position is set so that the top surface of the table is slightly below the detection position of the corresponding first or second paper surface detection photoelectric sensor 1717 or 1718.

The upper top plate 1722 of the folding machine 17 is installed to be tilted forward as shown in the figure so that the continuous paper 12 discharged from the printing press main body 1 slides down onto the paper table 16 along its upper surface. ing. A swing guide (paddle) 15 that can swing back and forth is arranged at the front end of the top plate 1722, and a paddle pulse motor 1 is installed in the space below the top plate 1722.
723 and paddle 1 via the timing belt 1725 and timing pulley 1724.
By rotationally driving the swing shaft 1726 of No. 5, the paddle 15 swings back and forth at a desired timing to fold the continuous paper 12 and move the paper table 16.
I try to stack them on top.

The swing angle of the paddle 15 is changed according to the vertical size of the continuous paper 12, but a standby position sensor 172 is used to know the standby position that is the reference for the swing range of the paddle.
7 is provided close to the paddle pulse motor 1723, and a sensor dog 1728 that acts on this standby position sensor 1727 is installed near the paddle pulse motor 1.
It is attached to the rotating shaft of 723.

Figures 6C and 6D show continuous paper 1, respectively.
FIG. 2 is an explanatory diagram showing setting examples of the swing angle of the paddle 15 and the upper limit position of the paper table 16 when the vertical size of No. 2 is long and short. As shown in FIG. 6C, when the vertical size of the continuous paper 12 is long,
The swing angle α of the paddle 15 is set to a large value, and the upper limit position of the paper table 16 is set to the second upper limit position, so that the paper table 1
The distance to the top surface of the paper on page 6 is relatively large. Further, as shown in FIG. 6D, when the vertical size of the continuous paper 12 is short, the swing angle α of the paddle 15 is
is set relatively small, and the paper table 1
The first upper limit position is selected as the upper limit position of No. 6, and the distance from the lower end of the paddle 15 to the upper surface of the paper on the paper table 16 is kept relatively small. This results in
It becomes possible to perform an appropriate folding operation according to the vertical size of the continuous paper 12. Furthermore, paper table 1
The number of paper surface detection photoelectric sensors and table upper limit switches that regulate the position of the paper sheet 6 may be increased depending on the vertical size range of the continuous paper sheet 12 to be used.

Initialization Next, paper feeding and paper receiving operations using the paper conveyance system and folding machine configured as described above will be explained. First, when the power is turned on, the microprocessor 21 executes an initialization sequence,
Each mechanism is reset to its initial position. In initializing the pin feed tractor 13, the microprocessor 21 controls the rotary encoder 19.
The DC servo motor 192 is rotated an appropriate number of times while referring to signals 6 and 197, and the paper conveying pin 131
1 to the initial position. Suction conveyor 14
At initialization, the suction blower (not shown) starts to be energized, and the suction force switching solenoids 1418 and 1419 switch to the auxiliary shutter 1415.
Only the solenoid 1419 corresponding to is energized,
As a result, the suction conveyor 14 is transferred to the auxiliary shutter 14.
15 is opened and the suction force is set to "medium" and suction is started. The conveyor belt 1402 remains stationary.

FIG. 7 is a flowchart showing the operation of the microprocessor 21 when resetting the impression cylinder 11 to the cylinder release position. Referring to FIG. 5, first, in step S100, the impression cylinder shaft located at an arbitrary position is rotated by a sufficient amount in the cylinder loading direction, and the sensor dog 17
9 is ensured to be located closer to the body mounting side than the body detachment position photo sensor 177. To this end, the eccentric support shaft 1102 is rotated in the drum loading direction by the impression cylinder pulse motor 153, and the impression cylinder 11 is moved in the drum loading direction by, for example, about 10 pulses. This angle of rotation in the body loading direction is such that the sensor dog 179, which is at the body release side stop position (in other words, the furthest position on the body body release side) is regulated by the stopper 175, is rotated toward the body body loading side beyond the body detachment position photosensor 177. Set in advance so that

Next, in step S101, it is determined whether or not the cylinder separation position photosensor 177 has detected the cylinder separation position. If it has not detected the cylinder separation position, the process proceeds to step S102, and the impression cylinder 11 is further moved in the cylinder separation direction by one pulse. This operation continues until the body release position is detected, and once detected, the process advances to step S103. At this point, the cylinder separation position photo sensor 177 is operating, but in order to make the operation more reliable, the impression cylinder 11 is moved in the cylinder separation direction by one more pulse. By the above algorithm, the impression cylinder 11 is always reset to a predetermined cylinder release position.

Also, at this time, since the impression cylinder pulse motor 153 has stopped at the correct step stop position, the subsequent operation of the impression cylinder pulse motor 153 is reliable, and thereafter the impression cylinder pulse motor 153 is controlled only by counting the drive pulses. The rotational phase of the motor 153, that is, the position of the impression cylinder 11 on and off the blanket cylinder 2 can be accurately known, making it easy to control the impression cylinder 11 on and off the blanket cylinder 2. For example, if the rotation of the impression cylinder pulse motor 153 is forcibly blocked by a rotation prevention mechanism such as a stopper and this position is set as the cylinder release position, the cylinder release position of the impression cylinder 11 is always reset to a constant position. The impression cylinder pulse motor 153 is not necessarily stopped at the correct step stop position (that is, it may be stopped in the middle between steps), and in such a case, the subsequent operation is uncertain. Therefore, it becomes difficult to accurately know the rotational phase of the impression cylinder pulse motor 153 only by counting the drive pulses. Therefore, from the viewpoint of facilitating the control of the impression cylinder 11 to unload and unload the blanket cylinder 2 with a simple configuration, the method of resetting the unloading position using the above-mentioned algorithm using the unloading position photo sensor 177 is effective. It's coming.

FIG. 8 is a flowchart showing the operation of the microprocessor 21 when resetting the paddle 15 to its original position. First, in step S104, it is determined whether or not the standby position sensor (origin position sensor) 1727 has detected the origin position. If it has not detected the origin position, the process advances to step S105, and the paddle pulse motor 1723 moves the paddle 15 backward by one pulse. This operation of moving the paddle 15 to the original position is continued until the origin position is detected, and when the origin position is detected, the initialization of the paddle 15 is completed.

Setting Continuous Paper Next, as a preparatory work for printing, the operator sets the continuous paper 12 on the pin feed tractor 13, and also records the vertical size information of the set continuous paper 12 and the mountain and valley folds representing the mountain and valley folds at the edge of the paper.
Valley information is input using the operation panel 25. To set the continuous paper 12, the operator opens the paper presser covers 1312 and 1313 on the left and right tractors, turns the lever 1306 in the loosening direction (clockwise direction) to unlock the right tractor unit 1302 on the moving side, and adjusts the paper to the paper width. While adjusting the width of the left and right tractors, engage the marginal punch of the continuous paper 12 with the paper conveying pin 1311 of the left and right tractors so that the paper edge comes to the paper setting reference position, and then turn the lever 1306 in the tightening direction (counterclockwise direction). The right tractor unit 1302 on the moving side is locked, and the paper presser covers 1312 and 1313 are closed, and the setting of the continuous paper 12 is completed.

FIG. 9 is an explanatory diagram showing the paper edge set position of the continuous paper 12 in the pin feed tractor 13. As shown in the figure, the paper edge of the continuous paper 12 is always placed in the paper edge of the pin feed tractor 13 regardless of its vertical size. Set it to the set reference position according to _P1 . As mentioned above, the pin feed tractor 13 is installed in the printing press main body 1 in advance so that the paper setting reference position P ₁ is a predetermined distance H from the printing start position P ₂ . When the setting is completed, the paper end of the continuous paper 12 is located a distance H from the printing start position _P2 . Then, the continuous paper 12 set in this way
When the threading of the continuous paper 12 is completed, or when the continuous paper 12 is waiting for the next printing during printing, the fold or perforation of the continuous paper 12 (i.e., the beginning of the next page to be printed) starts printing. It comes to the standby position _P3 by a run-up distance _H1 from position _P2 . In this way, P ₁ and P ₃ are the reference positions for paper setting and paper transport during printing, respectively, and must be detectable by the encoder, so the distance H ₂ between P ₁ and P ₃ is used. It is necessary to set it according to the characteristics of the encoder. For example, when using an encoder whose minimum unit of detection is 1/2 inch, H ₂ must be an integer multiple of 1/2 inch. Then, the above predetermined distance H is obtained by adding the required run-up distance _H1 to this _H2 ,
The mounting position of the pin feed tractor 13 is determined. If the paper conveying pin 1311 of the pin feed tractor 13 sets the continuous paper 12 when the detent (rotation prevention) is applied, the leading edge of the continuous paper 13 is set at _P1.
Adjust the paper conveyance pin 1311 so that it is in the correct position.

Paper threading operation Once the continuous paper 12 is set on the pin feed tractor 13, the paper threading operation then begins. FIG. 10 is a flowchart showing the operation of the microprocessor 21 when executing the paper threading sequence. Paper threading is started by inputting the paper threading key of the operation panel 25. Upon inputting the key, it is first determined in step S106 whether or not a paper threading command can be accepted. For example, if the paper threading sequence cannot be executed, such as when the vertical size and peak/valley information of the continuous paper 12 have not been input, the process advances to step S107, an error is displayed on the operation panel 25, and the operation is performed. ends.

When the paper threading command can be accepted, step S10
6, the process advances to step S108, and initial settings for each mechanical section are performed. This step S108 is for when the paper threading routine is entered from another routine such as blanket body cleaning.
When performing paper threading immediately after turning on the power, the initial settings of each part have already been made in response to turning on the power as described above, so this step S108
Then you will do nothing.

Next, in steps S109 and S110, the main motor 20 is started. This main motor 20 is provided with two types, one for low speed and one for high speed.
First, in step S109, the low-speed motor is turned on,
After a certain period of time has elapsed, the low speed motor is turned off and the high speed motor is turned on at step S110, and the starting of the main motor 20 is completed. As a result, the drive system by the main motor 20 starts operating, and the conveyor belt 1402 of the suction conveyor 14
starts to be conveyed at a predetermined speed, and the blanket cylinder 2, impression cylinder 11, plate cylinders 3 and 4, and ink rollers in the inking units 7 and 8 start rotating at a predetermined speed. At this time, the impression cylinder 11 remains reset to the detached position with respect to the blanket cylinder.

Subsequently, in step S111, the DC servo motor 192 of the pin feed tractor 13 is driven at a low speed, and the pin feed tractor 13 starts feeding the paper at a low speed of, for example, 1/4 of the printing speed. Simultaneously with the start of paper feeding, the microprocessor 21 starts tracking the paper end position of the continuous paper 12 based on a built-in hard timer. And step S
At step S112, the edge of the paper is set on the paper table 16 by moving the paddle 15 as the paper travels, as will be described later.Then, the process proceeds to step S113, where the DC servo motor 192 of the pin feed tractor 13 is activated.
The driving of the continuous paper 12 is stopped, and the paper threading is completed.

FIG. 11 is an explanatory diagram when the continuous paper 12 is passed between the blanket cylinder 2 and the impression cylinder 11. The blanket body 2 is formed by tightly winding a sheet member 203 on the side surface of a blanket body 2 cylinder 202, which has an opening 201 whose distance from the center is smaller than the outer circumference. Both ends of 203 are openings 204,
205 is fixed by a large number of set screws (not shown) provided in the longitudinal direction. Blanket body 2
is driven by the main motor 20, for example
It rotates at a constant rotational speed of 4500 rpm, and the impression cylinder 11 to be attached to the blanket cylinder 2 is driven by the blanket cylinder 2 by a gear that meshes with one end of the cylinder, so that the blanket cylinder 2 and the impression cylinder 11 are It rotates at a rotation speed that corresponds to the ratio of cylinder diameters.

Now, the impression cylinder 11 has been reset to the release position with respect to the blanket cylinder 2 in response to the power being turned on. It progresses through the gap in between. During printing, the paper feed speed of the continuous paper 12 must be equal to the circumferential speed of the blanket cylinder 2 and the impression cylinder 11, but as described above, the paper feed speed of the continuous paper 12 during printing must be equal to Since the speed is set to a very low speed of 1/4, the continuous paper 12 is struck in the advancing direction by the blanket cylinder 2 and the impression cylinder 11 when passing through the gap, and its rotation causes the suction conveyor 14 to move while contacting the impression cylinder 11 due to its own weight. sent in the direction.

If the paper is fed at a speed that is the same as or faster than the circumferential speed of the blanket cylinder 2, the continuous paper 12 will fall into the opening 201 of the blanket cylinder 2 unless the trajectory of the paper edge and the phase of the blanket cylinder are strictly controlled. For example, if a paper ejection roller 206 is provided to peel off the continuous paper 12 from the blanket cylinder 2 during printing, as shown by the imaginary line, the leading edge of the continuous paper 12 may fall into the paper ejection roller 206. It is very important to make the paper feeding speed of the continuous paper 12 slower than the circumferential speed of the blanket cylinder 2 during paper threading. By doing so, it is possible to easily perform automatic paper threading without performing any difficult control and without crushing the paper edges of the continuous paper 12 even if the paper ejection roller 206 is provided. It becomes.

As described above, the blanket cylinder 2 and the impression cylinder 11 are
The continuous paper 12 that has passed through the gap between the two is guided toward the folding machine 17 by the suction conveyor 14. Conveyor belt 1 of suction conveyor 14
The conveyance speed of the continuous paper 12 is set in advance to an appropriate constant value that is faster than the paper feed speed of the continuous paper 12 during printing, and the paper feed speed of the continuous paper 12 is currently 1/1 during printing.
4, the continuous paper 12 is conveyed while being under tension by the suction conveyor 14. This tension changes depending on the suction force of the suction conveyor 14, but during paper threading, this tension is applied to the marginal punch of the continuous paper 12 engaged with the paper conveyance pin 1311 of the pin feed tractor 13, so the suction force is a "medium" stage that prevents the marginal punch from being damaged. That is, as described above, in the initialization sequence when the power is turned on, the main shutter 1 of the suction conveyor 14 is activated.
The suction is started with the shutter 414 in the "closed" state and the auxiliary shutter 1415 in the "open" state.

Setting the position of the paddle and paper table On the other hand, in response to the input of the paper threading key on the operation panel 25, the paddle 15 of the folding machine 17
And the paper table 16 is set in a predetermined position. FIG. 12 is a flow chart showing the operation of the microprocessor 21 when setting the paddle position, and FIG. 13 is an explanatory diagram schematically showing the set position and swing angle of the paddle 15. The swing angle α is changed according to the vertical size of the continuous paper 12, and the microprocessor 21 is controlled by the operation panel 25.
For example, a count value corresponding to the required swing angle α is set in a counter (not shown) based on the vertical size information inputted from the machine. The paddle 15 swings between a "front" position and a "rear" position centered on a position separated by a center angle β degree from the reset position. Then, in step S114, β-α/2 is calculated. This angle is the angle required to move the paddle 15 from the reset position to the "rear" position, followed by step S11.
In step 5, the paddle pulse motor 1723 is driven by a pulse corresponding to the angle calculated above to move the paddle to the "rear" position, and the setting of the paddle position to the initial position is completed.

FIG. 14 is a flow chart showing the operation of the microprocessor 21 when setting the paper table 16 to the initial position. The upper limit position of the paper table 16 is changed according to the vertical size of the continuous paper 12, and the microprocessor 21 changes the upper limit position of two types (the first and a second table upper limit switch 1719,
(upper limit position corresponding to 1720) is selected in advance. For convenience of explanation, it is assumed that, for example, the first upper limit position corresponding to the first table upper limit switch 1719 has been selected. When the paper threading key is turned on, first, in step S116, it is determined whether the output of the first table upper limit switch 1719 is ON, that is, whether the paper table 16 is at the upper limit position. If so, the process advances to step S117 and the first paper surface detection photoelectric sensor 1
It is determined whether the output of 717 is ON, that is, whether there is any remaining paper from previous printing on the paper table 16. If there is no paper on the paper table 16, the output of the first paper surface detection photoelectric sensor 1717 is OFF, and in that case, setting of the table position is completed.

If there is paper on the paper table 16, the output of the first paper surface detection photoelectric sensor 1717 turns ON, so
The process advances from step S117 to step S118, where the table lifting motor 1703 is driven to lower the paper table 16 by a predetermined height. While the table is lowering, it is monitored in step S119 whether the output of the table lower limit switch 1721 is turned on, that is, whether the table has reached the lower limit position.
703 is stopped, the paper table 16 is stopped, and an error is displayed on the operation panel 25.

Also, while the table is lowering, step S1
21, the first paper surface detection photoelectric sensor 1717
monitors whether the output of
6, and when it turns OFF, the process advances to step S112, where the paper table 16 is stopped and the setting of the table position is completed. As a result, paper table 1
The upper surface of the remaining paper on 6 is set at a predetermined height.

If the output of the first table upper limit switch 1719 is not ON in step S116, the paper table 16 has not reached the upper limit position, so the process advances to step S123, where a counter (not shown) is reset to 0, and then the process proceeds to step S124.
Then, the table lifting motor 1703 is driven to raise the paper table 16 by a predetermined height. While the table is rising, the output of the first table upper limit switch 1719 is
It is monitored to see if it is turned on, and if it is turned on, the process advances to step S126 to stop the paper table 16, and then the operations from step S118 described above are performed. At this time, if there is no paper remaining on the paper table 16, the output of the first paper surface detection photoelectric sensor 1717 is OFF, so the process immediately proceeds from step S121 to S122, and the paper table 16 stops. If there is any remaining paper on the paper table 16, the paper table 16 will stop after the upper surface of the remaining paper reaches a predetermined height by the above-described operation.

Also, while the table is rising, step S1
27, the first paper surface detection photoelectric sensor 1717
monitors whether the output of
After resetting, the process returns to step S124 to raise the paper table 16, and when it turns ON, the process proceeds to step S129, where the counter is incremented by 1, and then, in step S130, it is determined whether the count value of the counter is 2 or more. determine whether In step S130, it is determined whether the ON output of the first paper surface detection photoelectric sensor 1717 is obtained continuously. Since it is detected, it is determined that there is no error in the detection,
The process advances to step S126 and the paper table 16 is stopped. Then, the operations from step S118 described above are performed. As a result, the upper surface of the remaining paper on the paper table 16 is set at a predetermined height.

When the count value of the counter is 1 in step S130, for example, the paper table 1 is moved from the paddle 15 of the remaining paper that has been threaded through the printing press main body 1.
Since there is a possibility that the first paper surface detection photoelectric sensor 1717 may have detected the oblique portion from 6 to 6, the process returns to step S124, the paper table 16 is raised again, and the first paper surface detection photoelectric sensor 1717 is detected again.
If the output of 717 is ON, the process proceeds to step S126 and subsequent steps as described above, and the upper surface of the remaining paper is set at a predetermined height.

Paper edge set As described above, operate the operation panel 2.
In response to the input of the paper threading key 5, the paddle 15 is set to the "rear" position, and the paper table 16 or the upper surface of the remaining paper on the paper table 16 is set at a predetermined height, and the pin feed tractor 13 is placed there. The continuous paper 12 is conveyed by the action of the suction conveyor 14. FIG. 15 is an explanatory diagram schematically showing how the paper edge is set when the leading edge of the continuous paper 12 reaches the folding machine 17, and a to d show the state when the leading edge of the paper is in a "valley" fold. , e to h show the sheets when the leading edge of the paper is "mountain" folded.

As mentioned above, the microprocessor 21 tracks the paper edge position at the same time as paper feeding starts, and when the peak/trough information input from the operation panel 25 is a "trough", the paper edge is tracked by the folding machine. The panel pulse motor 1723 is driven before reaching the initial position of the paddle and after the initial position setting of the paddle is completed.
Swing the paddle 15 up to the "forward" position. Then, the position shown in FIG. 15a (the top of the paper is at the paddle 15
The paddle 15 is moved to the "rear" position at the timing when the leading edge of the paper is conveyed to a position slightly before reaching the leading edge of the paper. At this time, the first page of the continuous paper 12 is "back"
Due to the action of the airflow generated on the back side of the paddle 15 as it is pulled into the position, the paddle 15 is forced to move to the "rear" position. The width of the paddle 15 is desirably wider than the paper width of the continuous paper 12 in order to avoid the influence of wind pressure that tries to push the continuous paper 12 back to the "front" position at this time. Then, the state shown in figure b is reached. After that, continuous paper 1
The paddle 15 is sequentially swung between the "front" position and the "back" position at timings c and d when the paper 2 advances approximately one page at a time, and the paper edge setting is completed in the state shown in d.

When the top of the continuous paper 12 is folded into a "mountain" fold, the movement of the paddle 15 is opposite to that when the top of the continuous paper 12 is folded into a "valley" fold. That is, the microprocessor 21
Do not operate the paddle 15 until the timing shown in Figure e.
Leave it set in the "rear" position. Then, at the timing e, the paddle pulse motor 1723
to move the paddle 15 from the "rear" position to the "front" position.
move into position. Then, the state shown in figure f is reached. Thereafter, the paddle 15 is sequentially swung between the "rear" position and the "front" position at timings g and h when the continuous paper 12 advances approximately one page at a time, and the paper edge setting is completed in the state shown in h. .

FIG. 16 is a flow chart showing the operation of the microprocessor 21 when operating the paddle 15. This program is called and executed at an appropriate timing, and the timing reference may be, for example, a built-in hard timer, or a reference rotary encoder (not shown) attached to the rotating shaft of the blanket body 2. It may be the output signal of When moving the paddle 15,
First, in step S131, it is determined whether the current paddle position is the "front" position or the "rear" position. This can be identified, for example, by flagging the "previous" position. When the position of the paddle 15 is "front", the process advances to step S132, where the paddle pulse motor 1723 is driven backward by the pulse amount corresponding to the count value corresponding to the swing angle α set in the counter, and the paddle 15 is moved backward. is moved to the "rear" position, and then the process proceeds to step S133 where the position of the paddle 15 is recorded as "rear", and the operation ends. When the current position of the paddle 15 is "rear", steps S131 to S13 are performed.
4. Proceed to S135 and perform the same operation as described above for moving the paddle 15 forward.

Printing When the paper threading is completed and the paper end of the continuous paper 12 is set in the folding machine 17 as described above, the low speed paper feeding stops (that is, the pin feed tractor 1
(The DC servo motor 192 of No. 3 is stopped), and the main motor 20 continues to rotate and waits for the next command. At this time, the leading portion (fold or perforation) of the first page of the continuous paper 12 to be printed is at the print standby position _P3 in FIG. 9.

When the print key on the operation panel 25 is turned on, the program proceeds to the printing program, where the routines of plate replacement, blanket cylinder cleaning, printing start, regular printing, and printing end are executed in sequence. Further, in response to the input of the print key, the paper presser fan 30 starts rotating. This paper presser fan 30
is configured to stop in response to the end of the printing program or in response to turning off the output of the paper presence/absence limit switch 1318 attached to the pin feed tractor 13.

In the plate exchange routine, the plate supply/discharge trays 9 and 1
The plates (not shown) prepared and placed in advance on the plate supply tray of No. 0 are wound around the corresponding plate cylinders 3 and 4 by the action of the corresponding plate supply and discharge units 5 and 6, and at the same time, the plates are loaded onto the corresponding plate cylinders 3 and 4. Supply/discharge plate trays 9, 1 to which old plates (not shown) wrapped around the cylinders 3, 4 correspond
The plate is discharged onto the plate discharge tray No. 0. In the case of one-color printing, the plate is discharged only on the necessary side.

In the blanket cylinder cleaning routine, cleaning liquid is first supplied to the blanket cylinder 2 from the cleaning liquid supply unit 18 at an appropriate timing, then the cleaning liquid is intermittently supplied and at the same time the cleaning liquid is wiped off by the wiping unit 19, and finally the supply of the cleaning liquid is stopped. The cleaning of the blanket cylinder 2 is completed by simply wiping it.

Next, in the printing routine, the timing of inking between the ink rollers in the inking units 7, 8 and the plate cylinders 3, 4, and the timing of transfer from the plate cylinders 3, 4 to the blanket cylinder 2 are controlled appropriately. After actually printing about two sheets, adjusting the amount of ink on the plate cylinders 3 and 4 and the blanket cylinder 2, and bringing the printing density close to a steady value, the steady printing routine begins.

In the regular printing routine, the impression cylinder 11 is attached to and detached from the blanket cylinder 2 at an appropriate timing that matches the phase of the blanket cylinder 2, and the continuous paper 12 is intermittently fed at this timing so that one of the blanket cylinders 2 Each rotation prints one sheet at a time. The number of sheets to be printed is set in advance through the operation panel 25, and when the number of sheets printed reaches the set number, a print end routine similar to the above-described print start routine is executed to reduce the amount of ink on the blanket cylinder 2 to near zero. After the printing is finished and the plate discharge and blanket cylinder cleaning routines are executed, the rotation of the main motor 20 is stopped, the printing program is finished, and the next command is awaited.

Intermittent feeding control of continuous paper FIG. 17 is a control block diagram for intermittent feeding of the continuous paper 12 during regular printing. Although the overall control system of this printing press is as described above with reference to FIG. 2, FIG. 17 specifically shows only the control system for intermittent feeding of the continuous paper 12 in detail. In other words, in order to know the timing standards required for intermittent feed control and other controls,
A reference rotary encoder 31 is connected to the rotating shaft of the blanket cylinder 2 and outputs a Z signal of one pulse and an A signal of, for example, 240 pulses per inch (ppi) on the circumference of the blanket cylinder 2 for each revolution of the blanket cylinder 2. are derived as the blanket cylinder 2 rotates. These timing reference signals Z and A are input to the print control device 32.

On the other hand, for example, the operation panel 25 (second
A vertical size input device 33 is provided as a part of the continuous paper 12, as described above, to input information regarding the vertical size of the continuous paper 12. This data signal representing the vertical size information is sent to the printing control device 32.
is input. The printing control device 32 calculates the timing necessary for intermittent feeding control of the continuous paper 12 based on the timing reference signals Z, A and the top and bottom size information data signals, and controls the motor control device 34 and the motor driver of the impression cylinder pulse motor 153. 36 and provides necessary timing command signals. The motor driver 36 drives the impression cylinder pulse motor 153 in response to a timing command signal from the printing control device 32 to cause the impression cylinder 11 to attach to or detach from the blanket cylinder 2.

As mentioned above, the rotary encoder 196 (Fig. 3A) is attached to the DC servo motor 192 for driving the pin feed tractor 13, and the rotary encoder 196 outputs, for example, a B signal of 240 ppi and a 2 ppi B signal to the paper feed length. and the D signal are derived. The motor control device 34 is connected to the blanket cylinder 2.
The A signal is received from the reference rotary encoder 31 on the side, and the B signal is received from the rotary encoder 196 on the pin feed tractor 13 side, and these signals are constantly compared to the motor drive device 3.
A drive signal is output to 5. The start/stop timing of the operation of the motor control device 34 is instructed by the timing command signal from the print control device 32. The motor drive device 35 amplifies the drive signal output from the motor control device 34 and drives the DC servo motor 192 . moreover,
The motor drive device 35 includes a rotary encoder 19
6 D signal (1/2 of continuous paper 12 as mentioned above)
By detecting the rising edge of the output (output for each inch), stop (detent) position control is performed so that the continuous paper 12 starts from the correct start position for each page. The reason why the stop position is controlled in units of 1/2 inch is that the vertical size of the folded continuous paper 12 is generally an integral multiple of 1/2 inch.

FIG. 18 is a timing chart showing the operation of each mechanical section when the continuous paper 12 is intermittently fed during regular printing. As the timing reference signal, the output signals Z and A from the reference rotary encoder 31 are used as described above. From these output signals Z and A, it is possible to know which phase the blanket cylinder 2 is currently in, as shown in FIG. 18g. “00”
indicates that the top position of the blanket cylinder 2 is at the printing start position, and at this timing, the terminal end 205 (the first
1) is at the position where the blanket cylinder 2 and the impression cylinder 11 are attached. The shaded area in FIG. 17g indicates the timing at which the opening 201 passes the printing start position, and in this example, 1/4 of the total circumference of the blanket cylinder 2 is the opening, and the remaining 3 It is assumed that /4 is the effective circumference of the blanket cylinder.

The impression cylinder 11 is mounted at a timing from time t ₁ to time t ₂ . That is, as shown in FIG. 18c, the impression cylinder pulse motor 153 (FIG. 5C) is moved toward the loading cylinder side at timing _t1 , shortly after the starting end 204 of the opening 201 of the blanket cylinder 2 passes the printing start position. The driving is started, the driving is gradually accelerated, and the driving is gradually slowed again, and the impression cylinder 11 is slowly moved over a relatively long period of time until time t ₂ when the end 205 of the opening 201 approaches the printing start position. Move it to the body position.
This drive is performed by giving a drive command from the print control device 32 to the motor driver 36, but the print control device 32 can know the drive timing by counting the A signal given from the reference rotary encoder 31. can.

At time _t2 when the impression cylinder 11 reaches the loading position, the opposing blanket cylinder 2 is in the opening phase, so the continuous paper 12 is not nipped between the blanket cylinder 2 and the impression cylinder 11. The nip of the continuous paper 12 is located at the end 205 of the opening 201 (see FIG. 11).
This is performed for the first time when it reaches the print start position (that is, at the timing of "00"), and printing starts from this point.

When the impression cylinder 11 is loaded (timing _t2 ), the DC servo motor 192 of the pin feed tractor 13 is in a non-driving state as shown in FIG. 18b, and the pin feed tractor 13 remains stopped. The continuous paper 12 is in a printing standby state. As will be described later, the pin feed tractor 13 is daytented (rotation prevention) at timing _t8 , and at this time, one of the continuous sheets 12 to be printed next
The beginning of the page (fold or perforation) is
It has come to the print standby position _P3 in FIG. At this time, the suction switching solenoids 1418 and 1419 of the suction conveyor 14 are in an initial state where only the auxiliary shutter solenoid 1419 is energized, as shown in d and e, so the main shutter 1414 is in the "closed" state and the auxiliary shutter is in the "closed" state. 1415 is in the "open" state, and the suction force of the suction conveyor 14 is in the "medium" stage as shown in (f). Suction conveyor 14
The conveyor belt 1402 is driven by the main motor 20 and runs at a constant speed in the paper ejection direction.
The continuous paper 12 is given an appropriate tension between a pin feed tractor 13 and a suction conveyor 14. The suction force in the "medium" stage during printing standby is preferably one that can provide as much tension as possible without tearing the marginal punch of the continuous paper 12 engaged with the paper conveyance pin 1311 of the pin feed tractor 13. Select it.

When the reference rotary encoder 31 outputs the Z signal as shown in a at timing _t3 , which is a little before "00" when printing starts, the print control device 32 counts the A signal based on this point. A start signal is generated at a count value corresponding to a predetermined timing t ₄ and is applied to the motor control device 34 . The motor control device 34 is thereby activated and compares the A signal from the reference rotary encoder 31 with the B signal from the rotary encoder 196 to realize speed increase according to a predetermined speed characteristic. A drive signal is given to the motor drive device 35. The motor drive device 35 releases the detent at timing _t4 and drives the DC servo motor 192 in response to the drive signal, thereby increasing the speed of the pin feed tractor 13 in the normal rotation direction according to a predetermined speed curve. I'm going to be done. At the same time as the pin feed tractor 13 is driven, the auxiliary shutter solenoid 1419 is de-energized as shown in e to bring the auxiliary shutter 1415 into the "closed" state, and the suction force of the suction conveyor 14 is increased as shown in f. ” stage. As a result, paper feeding of the continuous paper 12 is started while applying a very strong tension, and the feeding speed of the leading edge of the first page to be printed starting from the printing standby position P ₃ in FIG. 9 is the printing start position P ₂ ( Immediately before the timing "00"), the peripheral speed of the blanket cylinder 2 reaches V, which is the same as that of the blanket cylinder 2. Then, a moment later, at the timing of “00”, the leading edge of the first page is the printing start position.
Upon reaching P ₂ , the blanket cylinder 2 and impression cylinder 11
Printing is performed on one page of the continuous paper ₁₂ between the timing of "00" and the timing of t5 when a predetermined printing section (that is, corresponding to the vertical length of one page) ends. It will be done. In addition, the distance traveled from time t ₄ to t 00 (run-up distance, that is, equivalent to the area of the shaded part X ₁ of b)
is controlled by the motor control device 34 and is always constant.

During printing, the continuous paper 12 is conveyed while being nipped between the blanket cylinder 2 and the impression cylinder 11.
The paper feeding speed of the pin feed tractor 13 is accurately controlled by a motor control device 34. Note that the paper feeding speed at this time is the same as that of the blanket cylinder 2.
It is safer to avoid paper tearing if the conveyance speed of the continuous paper 12 nipped between the roller and the impression cylinder 11 (that is, the surface speed of the blanket cylinder 2) is a little faster (for example, about 0.2%). During printing, as mentioned above, a very strong tension is applied to the continuous paper 12 by the suction force in the "large" stage, so the continuous paper 12 stuck to the blanket cylinder 2 due to the viscosity of the ink can be easily removed. It can be torn off. Therefore, the 11th
It is not necessary to provide a paper discharge roller 206 as shown by the imaginary line in the figure, which is particularly effective when printing is desired to be performed on the entire widthwise surface of the continuous paper 12.

At the timing of _t5 when the printing section ends,
The printing control device 32 gives a cylinder separation command signal to the motor driver 36, and starts driving the impression cylinder pulse motor 153 toward the cylinder separation side as shown in c. This time t ₅ is
Accurate information can be obtained by counting the A signal of the reference rotary encoder 31 by a predetermined number depending on the vertical size. At this time, the drive is quickly started up and lowered in a relatively short period of time, unlike when the body is loaded, and quick detachment is achieved. Then, at the timing t ₆ when the impression cylinder 11 returns to the cylinder release position (same as t ₅ , this can be determined by counting the A signal. The same applies to t ₆ to _{t 8} below).
The print control device 32 outputs a stop command signal to the motor control device 34. The motor control device 34 is
In response to this stop command signal, the A signal from the reference rotary encoder 31 and the B signal from the rotary encoder 196 are compared, and a drive signal is sent to the motor to achieve deceleration according to a predetermined speed characteristic. to the drive device 35. The motor drive device 35 receives this drive signal and decelerates the DC servo motor 192, whereby the pin feed tractor 13 is decelerated according to a predetermined speed curve as shown in b. The amount of overrun of the continuous paper 12 that occurs until the pin feed tractor 13 completely stops is represented by the area of the shaded portion _X2 . At this time, at timing t ₆ , d,
As shown in e, both the main shutter solenoid 1418 and the auxiliary shutter solenoid 1419 of the suction conveyor 14 are energized, and the main shutter 1418
Both the auxiliary shutter 1415 and the auxiliary shutter 1415 are set to the "open" state, and the suction force is reduced to the "low" stage as shown in f, thereby minimizing the tension applied to the continuous paper 12.

Thereafter, at timing _t7 when the feed speed of the pin feed tractor 13 reaches zero, the printing control device 32 gives a reverse rotation command signal to the motor control device 34. In response to this reverse rotation command signal, the motor control device 34 sends a drive signal to the motor drive device 35 for realizing reverse rotation according to predetermined speed characteristics.
give to The motor drive device 35 receives this drive signal and drives the DC servo motor 192 in the reverse direction.
As a result, the pin feed tractor 13 is driven in reverse according to a predetermined reverse speed curve as shown in b. The amount of reversal at this time corresponds to the area Y, and Y
It is determined in advance that the relationship =X ₁ +X ₂ holds true. At timing _t8 when the reversal is completed, the top of the next page of the continuous paper 12 has arrived at the print standby position _P3 in FIG. That is, by reverse feeding between timings _t7 and _t8 , approach distance _X1 (timings _t4 to 00) and overrun distance _X2 (timings
The continuous paper 12 is pulled back by a distance corresponding to t ₅ to _{t 7} ).

Here, regarding the reverse operation, as mentioned above, when printing to the full vertical size of the continuous paper 12, it is necessary to pull back by the amount Y mentioned above. Print-prohibited area of Y or more (area that does not print)
If you take , there is no need to perform a reversal.

The suction force of the suction conveyor 14 is set to the "small" stage so as not to apply an excessive load to the marginal punch of the continuous paper 12 that is engaged with the paper conveyance pin 1311 of the pin feed tractor 13 during reverse feeding. This action prevents the continuous paper 12 from floating up from the upper surface of the suction conveyor 14. Then, at timing _t8 when paper feeding is completed, the main shutter solenoid 1418 is activated as shown in FIG. 18d.
The main shutter 1414 is closed by stopping power supply to the main shutter 1414, and the suction is set to the "medium" stage as shown in f, and the printer is in a standby state for printing the next page. Further, at timing _t8 , a stop command signal is output from the print control device 32 to the motor control drive device 35, and in response to this, the motor drive device 35 is in the printing standby mode due to the D signal from the rotary encoder 196. Control (detent) is performed so that the beginning (fold or perforation) of the next page of the continuous paper 12 does not deviate from the print standby position _P3 in FIG.

In the above printing sequence, if the vertical size data of the continuous paper 12 input from the vertical size input device 33 changes, the length between time 00 and _t5 in FIG. 18 is changed accordingly. Bye. In the above embodiment, the paper feeding speed of the pin feed tractor 13 and the loading and unloading cylinder of the impression cylinder 11 are controlled based on the signal of the reference rotary encoder 31 attached to the rotating shaft of the blanket cylinder 2, so that the rotation of the blanket cylinder 2 is controlled. Even if the speed changes, the paper feeding speed of the pin feed tractor 13 and the timing of taking off and landing on the impression cylinder 11 change accordingly, so it is possible to achieve good printing position accuracy without shifting the printing position. . However, when the rotation of the blanket body 2 is completely constant (for example, it is rotated at a constant rate by another control means), another stable oscillator (for example, a crystal oscillator) is used instead of the A signal of the reference rotary encoder 31. Even if the output of the oscillator used in the control device that controls the rotation of the blanket cylinder 2 is used, the same control according to the rotation phase of the blanket cylinder 2 as in the above embodiment can be achieved. It is possible to do so.

The explanation so far has been about the most standard control method of repeating printing every page. In FIG. 17, the print control device 32 is a control device that uses a microcomputer or the like and has an excellent judgment function, and can easily realize controls such as changing the printing start position and printing every few pages. The printing start position can be changed by changing the start timing _t4 of the pin feed tractor 13 in FIG. 18. As an example of skip printing, when printing every other page on paper with a relatively small vertical size, after the printing of one page is completed in the sequence shown in FIG. Until the next Z signal is generated from the rotary encoder 31, control may be performed so that the head of the next page skipped by one page comes to the print standby position _P3 in FIG. 9. These controls are carried out by the print control device 32.
This becomes possible simply by controlling the timing of the landing and landing cylinders of the pin feed tractor 13 and the impression cylinder 11. Furthermore, by controlling the speed of the pin feed tractor 13, it becomes possible to feed the continuous paper 12 at high speed, for example, when skipping.

Sequential Lowering of Paper Table The continuous paper 12 that has been printed while being fed intermittently as described above and is discharged from the printing press main body 1 is sequentially folded and stored in the folding machine 17 in a stack. The microprocessor 21 executes the paddle swinging program shown in FIG. Each time printing is performed, the swing angle α (first
3) to swing the paddle 15 alternately between the "front" and "rear" positions. The operation at this time is similar to that in the paper threading described above.

The paper table 16 gradually descends as the continuous paper 12 is stacked up. FIG. 19 shows the microprocessor 2 when lowering the paper table 16.
The microprocessor 21 executes this program every time the reference rotary encoder 31 of the blanket cylinder 2 outputs the origin pulse. The paper top surface height is selected according to the vertical size information as described above in connection with paper threading, and here, as in the case described above, the paper top surface height corresponding to the first paper surface detection photoelectric sensor 1717 is selected. The case where it is selected will be explained.

First, in step S136, it is determined whether the output of the first paper surface detection photoelectric sensor 1717 is ON, that is, whether the top surface of the paper has reached a predetermined height. If not, step S
The process advances to step 137, where a counter (not shown) is reset to zero, and the operation ends. If the top surface of the paper reaches a predetermined height, the first paper surface detection photoelectric sensor 1
The output of 717 turns ON and the process advances from step S136 to step S138, where the counter is incremented by one. Subsequently, in step S139,
Whether the count value of the counter is 5 or more,
That is, it is determined whether the output of the first paper surface detection photoelectric sensor 1717 has been turned on five or more times in a row. By setting multiple detections as a condition, the oblique portion of the continuous paper 12 suspended from the paddle 15 can be detected by the first paper surface detection photoelectric sensor 17.
17 is detected, it is possible to avoid malfunction. In other words, since the oblique portion of the continuous paper 12 is always swinging from side to side, it will not be detected more than five times in a row.

If the count value of the counter is 5 or more, the height of the upper surface of the paper on the paper table 16 has reached the predetermined height, so the process proceeds from step S139 to step S140, and the table lift motor 1703
is driven in the downward direction for a predetermined period of time, and the paper table 16 is lowered by a predetermined distance (for example, 5 mm). After the counter is reset to zero in step S141, the operation ends. If the count value is less than 5, the operation ends without lowering the paper table 16, but the counter is not reset at this time, and if the count value becomes 5 or more in subsequent executions of this program, At that point, the paper table 16 will be lowered.
In this way, the height of the top surface of the continuous paper 12 is always maintained in accordance with the vertical size of the continuous paper 12.

(Effects of the Invention) As explained above, according to the present invention, printing on continuous paper by an offset printing machine is started with the impression cylinder and transfer cylinder mounted on the cylinders by the detachable cylinder means, and the vertical size information is The printing can be completed by separating the impression cylinder and the transfer cylinder at the printing end rotation phase indicated by . Therefore, the vertical size can be changed simply by inputting the vertical size information. In other words, there is no need to replace the transfer cylinder with another transfer cylinder with a different diameter or replace the mechanism in order to perform printing with different vertical sizes, and printing efficiency can be significantly improved. be effective.

[Brief explanation of drawings]

Fig. 1 is a schematic sectional view of a multicolor offset printing machine, Fig. 2 is a schematic block diagram of the control system, Figs. 3A to 3E are mechanical illustrations of the pin feed tractor, and Figs. 4A to 4G are suction Figures 5A to 5D are explanatory diagrams of the conveyor mechanism. Figures 6A to 6D are explanatory diagrams of the mechanism of the folding machine. Figure 7 is when resetting the impression cylinder. 8 is a flowchart showing the operation when resetting the paddle, FIG. 9 is an explanatory diagram of the paper edge setting position, FIG. 10 is a flowchart showing the paper threading operation, and FIG. 11 is a flowchart showing the operation when resetting the paddle. An explanatory diagram when passing paper through the gap between the blanket cylinder and the impression cylinder. Fig. 12 is a flowchart showing the operation when setting the paddle position. Fig. 13 is an explanatory diagram schematically showing the setting position and swing angle of the paddle. , FIG. 14 is a flowchart showing the operation when setting the paper table to the initial position, FIG. 15 is an explanatory diagram schematically showing how the paper edge is set, and FIG. 16 is a flowchart when the paddle is swung. , FIG. 17 is a block diagram for controlling the intermittent feeding of continuous paper, FIG. 18 is a timing chart showing the intermittent feeding operation of continuous paper, and FIG. 19 is a flowchart showing the sequential lowering operation of the paper table. 2... Blanket cylinder, 11... Impression cylinder, 12...
... Continuous paper, 13 ... Pin feed tractor, 31
... Reference rotary encoder, 32 ... Printing control device, 33 ... Top and bottom size input device.

Claims (1)

[Claims] 1. In a state where an impression cylinder and a transfer cylinder that rotate oppositely are mounted, continuous paper inserted between the impression cylinder and the transfer cylinder is moved by driving a paper feeding means. A continuous paper intermittent feed control device for an offset printing press that performs printing, wherein the transfer cylinder has a small diameter portion on a part of its outer periphery, and the impression cylinder and the transfer cylinder are separated from each other. a means for generating a reference signal related to the rotational phase of the transfer cylinder; a means for inputting vertical size information of the continuous paper; receiving the reference signal and the vertical size information; detecting the rotational phase of the transfer cylinder;
The loading and unloading cylinder means connects the impression cylinder and the transfer cylinder in a rotational phase before the printing start rotational phase of the continuous paper in a state where the impression cylinder faces a small diameter portion of the transfer cylinder, and according to the vertical size information, Driving the impression cylinder and the transfer cylinder so as to separate them at the instructed print end rotation phase, and causing the paper feeding means to start feeding the paper after the cylinders are loaded, and to end the paper feeding after the cylinders are separated. A continuous paper intermittent feed control device for an offset printing machine, comprising: control means for controlling the paper so that the paper is fed by an amount corresponding to the vertical size of the continuous paper. 2. The control means drives the paper feeding means when the impression cylinder and the transfer cylinder are separated from each other to advance the continuous paper by a predetermined number of pages without printing, thereby enabling interlaced printing for each predetermined page. A continuous paper intermittent feed control device for an offset printing machine according to claim 1.