JPS6024588Y2 - Number printing device in offset printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a number printing device in a sheet-fed offset printing machine.

Conventionally, this type of number printing device incorporates a number printing device into the impression cylinder of the printing machine that performs normal printing, so that normal printing and number printing can be performed simultaneously on the impression cylinder of the printing machine. In some cases, a number printing device is built into the sheet discharge device, and after normal printing is performed by the impression cylinder of the machine, the number printing is performed by the sheet discharge device section.

However, since the former uses the impression cylinder of this machine to perform normal printing and number printing at the same time, it is necessary to attach a special mechanism to the impression cylinder of this machine.

For example, this mechanism is because the center distance between the center of the printing blanket cylinder and the number plate mounting cylinder is not kept the same with respect to the center of the impression cylinder of this printing machine (due to parts processing). To absorb errors, paper or a similar thin sheet is placed on the impression cylinder surface of this machine.

However, the number side of the number plate gets wedged into the sheet, resulting in a concave surface, which reduces the printing effect in normal printing, and therefore, the sheet needs to be replaced when performing normal printing. There were problems with printing workability and operability.

In addition, in the latter case, after normal printing is performed on the impression cylinder of this machine, the number printing device built into the paper ejection device prints the number just before it is loaded (dropped). It was stable.

In other words, the number printing is performed on a part of the chain delivery, and before the number is printed, the printed paper is only held at the leading end by the paper ejection claw, and the tail of the paper acts in the direction of falling, so the number is At the time of printing, the printing paper becomes wavy up and down or moves left and right, making it impossible to print numbers accurately at desired positions.

Therefore, the present invention was developed in view of the above-mentioned conventional problems.
By providing the impression cylinder for number printing separately from the impression cylinder of this machine,
The purpose of the number is to solve the problems of the conventional method and to expect excellent printing effects by allowing normal printing and number printing to be performed independently, and to print the number in the normal printing state. The present invention provides a printing device.

The drawings showing the embodiments of the present invention will be described in detail below.

In Fig. 1, which shows a schematic diagram of a sheet-fed offset printing machine equipped with a number printing device of the present invention, A shows a printing machine that performs normal printing, B shows a number printing device, and C shows a paper ejecting device. There is.

The printing machine A includes a plate cylinder 1, a blanket cylinder 2, an impression cylinder 3, an ink section 4 and a claw section 5 that supply ink and water to the image area of the printing plate (not shown) that is wound around the plate cylinder 1. , and a paper feed tray 7 for printing paper 6, and the impression cylinder 3 has a built-in gripping claw portion for conveying the printing paper 6 to a delivery cylinder to be described later, and the rest is conventional. The structure is similar to that of the offset printing machine, and as the printing paper 6 is conveyed in the direction indicated by the arrow in FIG. 2, the ink transferred onto the blanket cylinder 2 is deposited on the printing paper, and normal printing What is done is also similar to a conventional printing press.

The number printing device B is disposed between the impression cylinder 3 and the paper discharge device C of the printing press A, and basically consists of a delivery cylinder 8 as shown in FIGS. 1 and 2. and an ink supply device 11 equipped with a number printing impression cylinder 9, a number plate mounting cylinder 10, and a conventionally known ink washer 12 that presses a rubber blade against the outer peripheral surface of the roller and removes ink adhered to the roller. It consists of

The delivery cylinder 8 is used to convey the printed paper 6 between the machine impression cylinder 3 and the blanket cylinder 2 to the number printing impression cylinder 9, and to carry the printing paper 6 facing the blanket cylinder 2 side. It is provided to make the printed surface of the paper 6 appear on the circumferential surface side of the number plate mounting cylinder 10.

As shown in FIG. 3, the delivery cylinder 8 has a gripping claw part 13 that grips the leading edge of the printed paper 6 and conveys it to the number printing impression cylinder 9, and is supported by the cylinder shaft 14 and incorporated therein. A cam 15 is incorporated into one end of the cylinder shaft 14, and is rotated together with the delivery cylinder 8 which rotates together with the cylinder shaft 14.

The barrel axis 14 is also supported by bearings in the frame 16,17.

The number printing impression cylinder 9 serves as an underlay for printing numbers on the printing surface of the printing paper printed by the printing machine A and for creating vertical perforations, and is constructed as follows. There is.

The number printing impression cylinder 9 is rotatably supported on the eccentric portion of the eccentric shaft 18 via a bearing as shown in FIG.
8 is a number printing impression cylinder whose both ends are rotatably supported by frames 16 and 17, and whose eccentric part swings by being rotated by a link 75, an operating arm 64, and a cam 15. 9 is made to be in contact with and separate from the number plate mounting cylinder 10.

Further, as shown in FIGS. 4 and 5, a nail rest 20 is fixed to the gripping side of the inside of the groove 19 provided in the impression cylinder 9 for number printing by a port 21, and the belt to be wound around the impression cylinder 9 is fixed. f822
The above-mentioned strip steel is fixed by means of fixing pieces 23 and 24 which are fixed at a stepped portion provided on the upper part of the claw stand 20 of the impression cylinder 9 and are movable from side to side along the stepped portion. Holds 22.

The other end of the steel strip 22 is provided with a hole for hanging, and the spring 2
5, and the other end of the spring 25 is hooked to a pin 27 driven into the end of a hoop bracket 26 which is provided so as to be movable from side to side. is giving.

A perforation blade 28 shown in FIG. 2 is brought into contact with the steel band 22 to make perforations in the printing paper 6.

A tightening piece 30 is assembled into the nail base 20 with a bolt 29, and one end of an underlay 31 made of a thin sheet for printing a number is sandwiched between the nail base 20 and the nail base 20. The other end of the underlay is inserted between a movable bar 35 and a tightening bar 36, which are movable with bolts 34 along guide pieces 32, 33, and fastened with bolts 37.

By screwing in the bolt 34, the moving bar 35 is moved to the right in FIG. ing.

Here, the underlay 31 is in close contact with the entire effective area of the number printing impression cylinder 9, and the narrow steel band 22 is stretched over it.

Then, a number is printed on the surface where the underlay 31 is exposed, and vertical perforations are made on the steel band 22.

Further, as mentioned above, the band steel is provided with a narrow width so that it can be adjusted by moving left and right.

Also, in the groove 19, the printing paper 6 holding the stamp paper 6 and printing the number is placed in the groove 19.
A gripping claw 38 is built in to prevent misalignment of the printed paper 6 and to pass the printed paper 6 to the paper delivery device C, and the printed paper 6 delivered from the delivery cylinder 8 is held between the claw stand 20 and the claw 38'. Insert.

This gripping claw 38 is formed as follows.

A shaft 40 is inserted into the blanket 39, and a mounting base 41 is fixed to the shaft 40 with bolts 42. At one end of the shaft 40, there is an arm 43 that opens and closes the claw 38' attached to the mounting base 41. The arm 43 is fixed by a pin 44, and a bearing 45 is press-fitted into the tip of the arm 43. The bearing 45 rotates along the outer circumferential surface of a cam (not shown) that opens and closes the pawl 38', thereby opening the pawl 38'. It is opened and closed to transfer the printed paper 6.

Further, a pin 46 is fixed to the shaft 40, and the pin 46 is fixed to the shaft 40.
6, and a spring hook 4 bolted to the impression cylinder 9 for number printing.
8 and a spring 47 to keep the pawl 38' closed constantly.

Next, a specific aspect of the number plate mounting barrel 10 will be explained.

In FIG. 6, a mounting ring 50 for mounting the number plate 48 is fixed to the shaft 49 with a set screw 51.

The mounting ring 50 can be attached to the shaft 4 by loosening the setscrew 51.
It is provided so as to be movable in the axial direction on 9, and the setting of the desired position is determined by a scale plate 52.

Further, a plurality of number devices 48 can be attached to the outer peripheral surface of the attachment ring 50.

Furthermore, by attaching a plurality of the attachment rings 50 to the same shaft 49, it is possible to attach a plurality of rows of numberers 48 in the axial direction as well.

By doing this, it is possible to print numbers on multiple pages.

The shaft 49 is supported by a bearing on the frame 16.17 and rotates together with the number plate 48, and has a cam 53 incorporated in one end thereof and a cam 53 for operating a photoelectric detector 54 in the other end. The detection plate 55 is fixed and rotates together with the shaft 49.

Next, the process from finishing normal printing along the flow of the printing paper 6 to printing numbers and stacking it on the paper ejection device will be described in detail, together with the configuration of each part.

The printing paper 6 on the paper feed table 7 is conveyed to the impression cylinder 3 of this machine by a paper feeding device (not shown), and the impression cylinder 3 of this machine holds the leading edge of the printing paper 6 in its mouth.

On the other hand, ink is supplied from the ink unit 4 of the printing device A that normally performs printing, and the ink is applied to the image area of the plate wrapped around the cylinder plate 1 and transferred to the blanket cylinder 2, where it is transferred to the impression cylinder 3. The gripped printing paper 6 passes between the impression cylinder 3 and the blanket cylinder 2 for printing and is conveyed to the delivery cylinder 8.

When the leading edge of the printing paper 6 reaches point a shown in FIG. do.

One end of a link 58 is pivotally connected to the tip of the solenoid 57, and the other end is pivotally connected to one end of a swinging arm 59, and the other end of the swinging arm 59 is tightened by a clutch. It is fixed to the box 60.

The clutch box 60 incorporates a clutch 62 that is rotatably pivotally connected to a stud 61 and that locks the swinging movement of the actuating arm 64.

The clutch 62 and clutch box 60 are configured to swing freely via a stud 61.

A spring 63 is tensioned between the tip of the clutch 62 and the clutch box 60, and a spring 63 is stretched between the tip of the clutch 62 and the clutch box 60.
is maintained at a constant distance from the tip 64' of the actuating arm 64.

The clutch box 60 also has a tip 62' of the clutch 62.
An adjustment screw 65 is provided to maintain a constant distance between the tip 62' of the clutch 62 and the tip 64' of the actuating arm 64. By rotating the adjusting screw 65 clockwise, the tip 62' of the clutch 62 and the actuating arm 64 are
The gap between the tip 64' becomes wider, and counterclockwise rotation narrows the gap.

A spring arm 66 is installed in the clutch box 60, and its end is hooked to the frame 17, so that the end 62' of the clutch 62 and the end 64' of the operating arm 64 are connected to each other.
The spring 67 is tensioned in the direction in which the two are always separated from each other.

Here, the clutches 6 and -2 are always in contact with the stopper 68.

Since the solenoid 57 overcomes the tension of the spring 67 and attracts the force, the tip 62' of the clutch 62 is connected to the actuating arm 64.
64'.

An actuating arm 6 pivotably mounted by a stud 69
4, 70 rollers contact the cam 15 at the tip of the cam 15, and the actuating arm 64
oscillates.

The above-mentioned swinging is performed by a spring 72 which is hooked at one end to the operating arm 64 and at the other end to a spring hook 71.

Therefore, the end 62' of the clutch 62 is engaged with a stopper pin 73 assembled at the end of the actuating arm 64.

A pin 74 is fixed to the actuating arm 64, one end of a link 75 is inserted into the pin 74 so as to be swingable, and the other end is swingably incorporated into the suspension 76 via a pin 77. has been done.

The block 76 is assembled at the tip of the eccentric shaft 18, and is fixed to the shaft 18 with a bolt 78 via a rotatable eccentric position adjusting worm gear 79 and an eccentric position adjusting worm wheel 80.

The eccentric position adjusting worm wheel 80 is connected to the shaft 18 via a key.
The bolt 78 is fitted into the shaft 18 so that even if the bolt 78 is loosened, it will not come into contact with the shaft 18.

Holt 81 arbitrarily sets the eccentric position of the shaft 18 using the eccentric position adjusting worm gear 79, and then tightens the eccentric position adjusting worm wheel 80 so that the eccentric position of the shaft 18 does not shift.

When the eccentric position of the shaft 18 is set arbitrarily, the shaft 49 of the number dial
The axis distance between the paper and the paper can be arbitrarily selected depending on the paper thickness.

In other words, since the actuating arm 64 is swung by the cam 15, the link 75 also repeats left and right movement, so that the block 76
The shaft 18 also swings via.

When the roller 70 is at a high position on the cam 15, the eccentric position of the shaft 18 is closest to the number plate mounting cylinder 10.

When the clutch 62 comes closest, the tip 62' of the clutch 62 is engaged with a stopper pin 73 incorporated in the actuating arm 64.

This latching occurs when the solenoid 57 is energized and attracted.

That is, only when the printing paper 6 is fed, the photoelectric tube 56 of the printing paper 6 detects it, and the photoelectric detector 54, which sets the solenoid activation timing, is turned on.

When paper is not being fed, the photoelectric sensor 56 is not turned on and only the photoelectric detector 54 is turned on. Therefore, the solenoid 57 is de-energized at the timing when the photoelectric detector 54 is turned on, and the solenoid 57 is not excited and absorbed, so the clutch is closed. The tip 62' of the actuating arm 64 is not hooked to the stopper pin 73 of the actuating arm 64.

At this time, the actuating arm 64 repeatedly swings due to the rotation of the cam 15.

Therefore, the number printing impression cylinder 9 connects the tip of the printing paper 6 to the phototube 56.
The eccentric shaft 18 repeats rocking until it is detected.

When the leading edge of the printing paper 6 is detected by the phototube 56 and the photoelectric detector 54 is turned on, the solenoid 57 is energized, and the leading end of the clutch 62 contacts the leading end 64' of the operating arm 64, causing the clutch to engage.

Since the operating arm 64 is constantly swinging, the clutch engages at a high point above the cam 15.

At this time, the number printing impression cylinder 9 comes closest to the number plate mounting cylinder 10 and is held in that state (a state in which number printing is possible).

The printing paper 6 is transferred from the delivery cylinder 8 to the number printing impression cylinder 9, and then perforated by the blade 28 of the sewing machine 82.

The sewing machine device 82 has the following form.

Brackets 83, 84 are assembled to the left and right frames 16, 17, and support plates 86 and 87 for incorporating perforation shafts 85 are bolted to the brackets 83, 84, respectively.

A perforated shaft 85 is attached to the center of the support plate 87 with a knob bolt 88.
It is fixed at

A bracket 89 is inserted into the perforation shaft 58,
It is fixed to the sewing machine shaft 85 by a bolt 90, and a pin 91
The arm 92 is assembled using the fulcrum, and the bolts 93 and 94
This allows the contact pressure between the sewing machine blade 28 rotatably incorporated in the tip of the arm 92 and the number printing impression cylinder 9 to be arbitrarily determined.

Since the printing paper 6 is conveyed continuously, the number machine 48 is designed to count each time one printing paper passes.

The arm 95 is swingably attached to a stud 96, and a roller 98 is incorporated into one end of the arm 95 via an eccentric pin 97 so as to be rotatable and always in contact with the operating arm 64.

One end of the link 99 is rotatably incorporated into the arm 95 via a pin 100, and the other end is rotatably connected to the clutch box 101 via a pin 102.

The clutch box 101 is rotatably connected to a stud 104 together with a clutch 103 that locks the swinging movement of the operating arm 105, and the clutch box 101 is rotatably connected to a stud 104.
An adjusting screw 106 and a spring 107 are provided so that the tip 105' of the actuating arm 105 maintains a certain distance.By rotating the adjusting screw 106 clockwise, the gap between the tip of the clutch 103 and the tip 105 of the actuating arm 105 is adjusted. The gap is designed so that it becomes wider, and by rotating to the left, the gap becomes narrower.

The spring 107 is provided to maintain a constant distance between the tip 103' of the clutch 103 and the tip 105' of the operating arm 105.

Therefore, the clutch 103 comes into contact with the stopper pin 108, and the actuating arm 10 at the tip 103' of the clutch 103 comes into contact with the stopper pin 108.
The distance between the tips 105' of 5 is kept constant.

One end of the clutch box 101 is hooked to a stud 110 and a spring 109 is tensioned so that the roller 98 of the arm 95 is in constant contact with the operating arm 64.

The actuating arm 105 is rotatably attached to a stud 111, and a roller 112 is rotatably incorporated into one end of the actuating arm 105 via a pin 113. A cam 53 with a roller 112 built into one end of the numbering shaft 49 by a spring 115
It is always present.

One end of the link 116 is connected to the actuating arm 10 by a pin 117.
5, and the other end is rotatably connected to an arm 119 via a pin 118.

The arm 119 is fixed to a number counter cam shaft 121 by a pin 120.

A number counter camshaft 121 is built in so as to be able to swing freely, and a guide key 122 is fixed with a bolt 123.
A button holder 124 and a presser plate 125 are fixed to each other by bolts 126 with a number counter camshaft 121 and a guide key 122 in between.

A counter cam 127 is bolted to the block 124 and is adapted to count the numbers 48.

A roller 12 with the cam 127 attached to the tip of the arm of the number machine 48 on the number machine counter cam shaft 121.
By moving the cam 127 to a position where it contacts the counter cam shaft 1 and fixing it with the bolt 126, the cam 127 is moved to the position where it abuts the counter cam shaft 1.
In conjunction with the rocking of the roller 21, the roller 128 performs a reciprocating motion from a position where it can be engaged to a position where it is disengaged.

When the roller 128 comes into contact with the cam 127, the number wheel rotates and the numbers on the number wheel are advanced. Therefore, when printing numbers on the printing paper 6 continuously, The movement of the counter cam 127 may be stopped by the clutch 103, and the roller 128 may come into contact with the cam surface of the cam 127 once for each rotation of the printing press.

After perforations are made on the printing paper 6, number printing begins.

That is, the distal end 62' of the clutch 62 is engaged with the stopper pin 73 incorporated at the distal end of the aforementioned operating arm 64, and since the clutch is engaged, the roller 98, which is in constant contact with the operating arm 64, is pushed downward. There is.

Thus, the tip 103' of the clutch 103 operates to the left and comes into contact with the tip 105' of the actuating arm 105.

On the other hand, the roller 112 of the actuating arm 105 moves upward due to the high point of the cam 53, and the actuating arm 105 moves upward.
Rotate counterclockwise.

Thus, the end 103' of the clutch 103 is engaged with the stopper pin 129 and held in this state.

The rotation of the operating arm 105 causes the number counter cam shaft 121 to rotate clockwise in FIG. It is held in a state where it can come into contact with the attached roller 128.

In this way, numbers are printed while advancing the numberer wheel one frame at a time, and the printed sheets on which the number printing has been completed are transferred to a paper discharge device and stacked one after another.

If the feeding of printing paper stops while the printing device is rotating, the photoelectric tube 56 will not detect the printing paper 6, so the suction by the solenoid 57 will be released at the timing when the photoelectric detector 54 turns ON, and the clutch will be activated. The tip 62' of the actuating arm 64 comes off from the stopper pin 73 at the tip of the actuating arm 64.

By being disengaged in this manner, the actuating arm 64 begins to operate.

As the actuation arm 64 swings, the arm 95 moves upward, and the tip 103' of the clutch 103 is disengaged from the stopper pin 129 at the tip of the actuation arm 105.

At this time, the cam 15.53 is continuously rotating in a constant direction.

The actuating arms 64, 105 thus repeat swinging until the next printing paper arrives.

Furthermore, the main body blanket cylinder 2, main body impression cylinder 3, delivery cylinder 8, number printing impression cylinder 9, and number plate mounting cylinder 10 each have the same diameter.

Further, each of the legs is connected to a gear wheel having the same pitch diameter as the diameter of the gear at one end thereof, so that the legs rotate in synchronization.

Further, according to the present invention, letterpress printing is possible by replacing the number plate 48 with letterpress, and as shown in FIG. 7, each leg 8. 9. Change the arrangement of 10,
Furthermore, by incorporating a cylinder 130 for making horizontal perforations, horizontal perforations can be made simultaneously on the printing paper.

Furthermore, as shown in FIG. 8, the number plate mounting cylinder 10 can be replaced with another blanket cylinder 131, and the plate cylinder 132 can be incorporated into it. In this way, a two-color machine can be obtained.

As explained above, according to the number printing apparatus of the present invention, the impression cylinder 9 for number printing is separate from the impression cylinder 3 of the machine that performs normal printing.
Not only is it possible to print numbers without damaging the impression cylinder 3 of this machine, but the impression cylinder 9 for number printing serves as the underlay of the printing paper 6, and unstable factors such as waviness of the printing paper are removed. Therefore, not only perforation but also normal printing and number printing can be effectively performed in a stable state.

The swinging of the impression cylinder 9 for number printing and the counting operation of the printing paper 6 are controlled by each operating arm 64, 1 by a solenoid 57 that detects the leading edge of the printing paper at a predetermined position of the delivery cylinder 8 and energizes it.
05, each clutch 62, 103, arm 95, etc., so even though the impression cylinder 9 for number printing is provided independently from the impression cylinder 3 of this machine, normal printing and number printing cannot be performed. Numbers can be printed in sequence and accurately at desired positions while simultaneously and in parallel.

In addition, a cam 15 is set so that when the cutout part of the number printing impression cylinder 9 comes to the number plate mounting cylinder side, it approaches the number plate mounting cylinder 10. If it is not detected, the cutout portion of the number printing impression cylinder 9 swings to the non-printing position while it is on the number plate mounting cylinder side, thereby preventing cylinder printing.

Also, the deviation in the vertical direction due to the swinging of the impression cylinder 9 for number printing is as follows.
It has no effect on the Miin blade.

In addition, since the clutch 62 for inserting the body and the clutch 103 for the number counter cam are provided on the same frame and are linked by an arm 95, only one solenoid is required to operate the clutch. Since they are installed on the same frame surface, adjustments can be made on one side of the machine, which has practical effects such as easy maintenance and inspection.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a sheet-fed offset printing machine equipped with a number printing device according to the present invention, and Fig. 2 is a side view showing the arrangement of each leg of the number printing device, the flow of printed paper, and the body insertion mechanism. figure,
Fig. 3 is a diagram of the cylinder inserting operation mechanism of the same device, Figs. 4 and 5 are side views and cross-sectional views partially cut away of the number printing impression cylinder in the same device, and Fig. 6 is a diagram of the same device. Diagram of the number machine operation mechanism,
FIGS. 7 and 8 are schematic side views of modified examples of the arrangement of the legs in the device. A... Printing machine that performs normal printing, C...
...Paper discharge device, 3...Impression cylinder of printing press, 6...
...Printing paper, Death...Delivery cylinder, 9...
Impression cylinder for number printing, 10... Number plate mounting cylinder, 11
...Ink supply device, 12 ... Ink washer, 13 ... Gripping claw portion, 14 ...
Delivery cylinder shaft, 15, 53...Cam, 18...
...Shaft of impression cylinder for number printing, 48...Number, 56...Phototube, 57...Solenoid, 62,103 Clutch, 64,105...・・・・・・
Operating arm, 75, 116... Link, 82.
...Sewing machine device, 95,119...Arm, 121...Number counter cam shaft.

Claims (1)

[Scope of utility model registration request] A number printing device for a sheet-fed offset printing machine that is installed between the impression cylinder and the paper ejection device of a printing press that performs normal printing, and includes an ink supply device equipped with an ink washer and a number device installation. The printer is equipped with a cylinder, an impression cylinder for number printing which serves as an underlay of the printing paper for printing numbers or making perforations, and a gripping claw part for holding the leading edge of the printing paper printed by the printing machine, and holding the printing paper. a delivery cylinder disposed between the circular impression cylinders for conveyance from the printing press impression cylinder to the number printing impression cylinder and for the printing surface to face upward;
A solenoid is energized when a phototube detects printing paper at a predetermined position on the transfer cylinder, and a swinging arm is connected to the number machine by rotating the eccentric shaft of the number printing impression cylinder in constant contact with a cam fixed to the shaft of the transfer cylinder. an actuating arm that operates via a link to approach the mounting barrel; a clutch 62 coupled and interlocked to the solenoid to engage one end of the actuating arm and hold the arm in position; and the number plate mounting. An actuating arm that is permanently attached to a cam fixed to the shaft of the barrel and swings, and which interlocks and connects a swingable number counter cam shaft via a link and an arm; It is composed of a clutch 103 that is attached to the machine, and a sewing machine device that is disposed close to the impression cylinder for number printing. A clutch 103, which is removably pivoted to one end of an actuating arm 105 which is interlockingly connected to a number counter cam 127 via a link 116, is interlockingly connected via a link 99 to the arm 95 which is in contact with and swings in conjunction with the arm 95. A number printing device for an offset printing press, characterized in that number printing and printed paper counting are linked.