JPH0130451Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a paper discharge device for an inspection rotary printing press in which an inspection device for inspecting the quality of printed matter before additional printing is attached to a reprinting device for serial numbers, etc.

In recent years, with the diversification of printing, there has been an increase in demand for printed materials that have pictures printed on them and then add sequence numbers, seals, store names, management codes, etc. It is printed continuously by connecting the machine and a special printing machine for numbers, etc.
Alternatively, after the design is printed, it is printed in a separate process using an independent dedicated printing machine. Additionally, among these types of printed matter, each piece is important and expensive, such as banknotes, securities, and high-end art prints, and printing of images and additional printing of numbers, etc. are done in separate processes. In addition, an inspection process is provided before the reprinting process, and only those that pass the inspection are sent to the reprinting process to avoid management confusion and the occurrence of defective products. Particularly in banknotes and other items with serial numbers, missing numbers are not allowed, so strict checks are carried out before reprinting. Furthermore, this inspection and sorting has conventionally been performed by installing inspection equipment in a large area and visually inspecting it by many workers, but in order to match the inspection speed to the high speed of the printing machine, It required a large number of skilled workers, and many problems remained in terms of cost, etc.

Therefore, in recent years, with the development of electronics and optical equipment, it is possible to electrically detect unprinting, "misalignment", "overlapping", color density, etc. of printed matter through optical systems, and automatically print. An inspection rotary printing press that performs additional printing after inspecting the condition has been developed, and its contents are disclosed in a separate application filed by the present applicant entitled ``Inspection Rotary Printing Machine'' (Japanese Patent Application No. 56-91363).

However, if there is only a single paper stacking table that stores the ejected printed paper, this problem does not occur.
If you accumulate printed paper alternately and then pull out the paper that is full and take out the printed paper, it is easy to forget to reinstall the paper stacking tray, so some countermeasures should be taken. This has come to be demanded.

The purpose of the present invention is to completely satisfy these demands, and the present invention is an inspection rotary printing machine having first and second paper stacking tables that can be freely pulled out, and is equipped with a sensor that individually detects the drawn-out state of each paper stacking table. , a counter is provided to count the number of accumulated sheets in each paper stacking table, and when the paper used for accumulation in each paper stacking table is drawn out based on the detection force of the sensor and the count output of the counter, and By providing a control circuit that sends out a control output when each paper stacking platform is in a full accumulation state, it is extremely effective to deal with forgetting to attach each paper stacking platform and the full accumulation state. , provides a paper discharge device for an inspection rotary printing press.

Hereinafter, details of the present invention will be explained with reference to figures showing embodiments.

FIG. 1 is a schematic side view of an inspection rotary printing press, and the printing press 1 includes a paper feeding device 2, an inspection device 3,
It is composed of a printing device 4, a paper ejecting device 5, and other attached devices. Note that this embodiment shows a printing machine that additionally prints consecutive numbers on banknotes on which designs are printed, and the paper feeder 2 accumulates a large number of papers 6 on which the designs of a plurality of banknotes are printed. A paper stacking table 7 is provided, and this paper stacking table 7 is suspended from a paper feed frame 8 by a chain 9.
The paper 6 is configured to be automatically raised as the paper 6 is sucked one by one from the upper layer and conveyed by a suction device (not shown in the figure) at the top. Further, between the paper feeding device 2 and the inspection device 3, there is a difference plate 10 that receives the paper 6 sent from the paper feed device 2 in the direction shown by arrow A, and a difference plate 10 that inspects the paper 6 fed onto the difference plate 10. Swing 11 that feeds sheets one by one to the device 3
and is provided.

Furthermore, the inspection device 3 includes a printing device 4, which will be described later.
As shown by arrows B and C in the figure, the first inspection cylinder 12 and the second inspection cylinder 13, which rotate in opposite directions, have their circumferential surfaces facing each other and are connected to each other on both sides. The inspection cylinders 11 and 13 are mounted on a shaft between frames 14, and each has a pair of claws that transport the paper 6 held by the claws of the swing 11 while wrapping it around the circumferential surface of the swing 11. The surface of the paper 6 conveyed by this claw is exposed forward when it is wrapped around the first inspection cylinder 12, and when it is wrapped around the second inspection cylinder 13, the surface of the paper 6 is exposed forward. It is constructed so that the back surface is exposed to the rear when the device is held. Each of the inspection cylinders 12 and 13 has an inspection mechanism 1 that faces the paper 6 that is wrapped around the circumferential surface of the cylinder and is conveyed, and that detects defective printing areas and issues a signal.
5 and 16 are attached, respectively. Also,
Reference numeral 17 denotes a paper take-up cylinder which has a diameter of 1/2 of the inspection cylinders 12 and 13 and is in contact with them, and between this, a sprocket 18 coaxially with this, and a sprocket 19 at the bottom of the printing device 4. A pair of left and right conveyance chains 20 are stretched, and a plurality of pawls are arranged in parallel on a pawl shaft supported at regular intervals between these left and right conveyance chains 20. The conveyor chain 20 receives the collected paper 6 in cooperation with the paper pickup cylinder 17.
It is configured to convey this in the direction of arrow D as it travels.

Further, the printing device 4 includes the plate cylinder 21 having a number plate attached to its circumferential surface, an impression cylinder 22 that is in contact with the plate cylinder 21 and applies printing pressure during printing, and a paper that is in contact with the impression cylinder 22. The transfer cylinder 23 and the sprocket 19
The conveyor chain 20 and the paper feed cylinder 23 are provided in a notch in the peripheral surface of the impression cylinder 22 and the paper transfer cylinder 23. and between both cylinders 22 and 23, the paper 6 is changed in the mouth and the arrows E,
Claws are provided for conveying in the directions indicated by F and G. Further, the plate cylinder 21 can be attached to and detached from the impression cylinder 22 by being driven by a cam mechanism at the end of the shaft.
When the inspection mechanisms 15 and 16 detect a defective paper and issue a signal, the inspection mechanisms 15 and 16 separate from the impression cylinder 22 when the defective paper passes, and come into contact with each other after passing the defective paper. The number device on the plate cylinder 21 is driven by a number feeding mechanism provided at the end of the shaft, and the number is sent every one rotation of the plate cylinder 21, and the number device is driven by a number feeding mechanism provided at the end of the shaft.
In response to a defective paper detection signal from 6, the number feed is stopped only when the defective paper passes, and 25 is composed of an ink fountain 26 and a large number of roller groups, and supplies ink to the number machine. This is an inking device.

On the other hand, a paper take-up cylinder 27 is in contact with the impression cylinder 22, and a pair of left and right paper ejection chains 30 are stretched between a sprocket 28 coaxial with the impression cylinder 22 and a sprocket 29 at the terminal end of the paper ejection device 5. Along with being hung,
A plurality of paper ejection claws are arranged in parallel on a claw shaft supported at a constant interval between the left and right paper ejection chains 30, and the paper 6 held by the claws of the impression cylinder 22 is transferred to the paper take-up cylinder 2.
7 to receive the paper and transport it in the direction of arrow H in accordance with the transport of the paper discharge chain 30. Reference numerals 31a and 31b are first and second paper stacking tables that are provided so as to be able to rise and fall with respect to the paper ejection frame 32, and there is a cam (not shown in the figure) above the cams. The paper 6 released from the paper ejection claw of the paper ejection chain 30 is stacked alternately, and the paper 6 is automatically lowered as the paper 6 is stacked. In addition, sprocket 2
A paper ejection receiver 33 is provided below the paper ejection claw 9, and a cam mechanism (not shown in the figure) for opening and closing the paper ejection claw is provided.
Normally, the paper ejection claw is opened on the paper stacking table 31a or 31b to release the paper 6, but when a defective paper detection signal is issued from the inspection mechanisms 15 and 16, the defective paper reaches the sprocket 29. The paper ejection claw is sometimes opened to eject defective paper onto the paper ejection receiver 33.

FIG. 2 is an enlarged front view of each paper stacking table 31a, 31b, and FIG. 3 is a side view of the paper stacking table 31a, 31b pulled out. 42a, 42b, and has a table 43 supported in a freely drawable manner, and a pair of paper alignment plates 44a, 44a on the top surface of the table 43.
4b is rotatably pivoted by a hinge 45 for returning to upright position, and when a predetermined number of papers 6 are accumulated,
As shown in FIG. 3, it is easy to pull out the table 43 and take out the paper 6.

Therefore, the paper 6 fed from the paper feeder 2 is
Both the front and back sides are photoelectrically inspected by the inspection device 3, and those judged to be good are reprinted by the printing device 4, and then transferred to the first and second paper stacking tables 31.
A predetermined number of sheets are alternately accumulated on sheets a and 31b, but if the inspection device 3 determines that the sheets are defective, additional printing is omitted and the sheet is discharged to the sheet discharge tray 33.

However, as shown in FIG. 3, a switch LS operated by a protrusion 46 of the table 43 is provided as a sensor for individually detecting the drawn-out state of the paper stacking trays 31a and 31b.もIt has been left unattended, or each paper stacking table 31
It electrically detects that both a and 31b are left in a full accumulation state, and issues an alarm or stops the operation of the printing press 1, or
It is designed to send control outputs such as ejecting the paper 6 to the paper ejection table 33.

FIG. 4 is a circuit diagram of such a control circuit, which is connected to the rotating shafts such as the sprockets 28 and 29 in FIG.
Count output contact of a counter that photoelectrically detects
A CT is provided, and when this counter counts a predetermined number of sheets 6 accumulated on the paper stacking tray 31a, the contact CT is temporarily turned on, so that the relay DX ₂ and the latching relay SR are activated. By switching the contact SR of the latching relay SR, the operating relay DC1 is restored, and the relay DC2 is also operated, thereby causing the paper stacking tray 31a,
The cam above 31b is switched, and this time, the paper 6 is ejected to the paper stacking table 31b, and in response to the ON of the contact CT, the paper 6 is ejected from the paper stacking table 31b to 31a, and again to 31a. to 31b alternately and repeatedly.

In addition, the switch LS of each paper stacking table 31a, 31b
1. LS2 is turned on when the table 43 is pulled out, so relays DX3 and DX4 are activated accordingly.
is activated, and by turning on make contacts DX3 and DX4, if the table 4 is in the paper 6 accumulation state or has been switched to this state.
If 3 is pulled out, contacts DC1 and DC2 are also turned on, so relay DX8 operates and its contacts
Control output CONT is sent by DX8.

On the other hand, if table 43 is installed, switches LS1 and LS2 are turned off, and relays DX3 and LS2 are turned off.
DX4 is being restored and its break contact DX
3. DX4 is turned on, and the relays corresponding to the paper stacking tables 31a and 31b that are being used to accumulate paper 6
Contacts DC1 and DC2 of DC1 and DC2 are also turned on, so relays DX5 and DX6 operate, and self-contact DX
5. DX6 provides self-maintenance,
This state is maintained until the table 43 is pulled out.

Therefore, if each paper stacking platform 31a, 31b is left full and the paper stacking platform 31a, 31b from which the paper 6 is to be discharged is switched,
After relay DX2 is operated by count output contact CT, relay DX7 is operated via contacts DX5 and DX6 which are turned on by break contact DX2, and in order to perform self-holding by self-contact DX7, contact DX7 and Relay DX8 also operates when DX2 is turned on, and control output CONT
Send out.

However, the logic configuration shown in FIG. 4 may be based on semiconductor logic elements, and switches LS1 and LS2
The same effect can be obtained by using a photoelectric sensor etc. instead of
Various modifications are possible.

Therefore, when the paper stacking trays 31a and 31b used for alternately storing paper 6 are left in a full storage state, or when the table 43 is left in a drawn-out state, the appropriate control output CONT is output. Since the treatment is carried out, the occurrence of troubles such as the paper 6 being ejected while the table 43 is pulled out or further accumulation in the full state is completely prevented.

As is clear from the above explanation, according to the present invention, human errors caused in handling of the paper ejecting device are completely prevented, and the paper ejecting device always operates normally. Great effects can be obtained by applying it to printing machines.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a schematic side view of the entire configuration, Fig. 2 is an enlarged front view of the paper stacking table, and Fig. 3 is a schematic side view of the entire configuration.
The figure is a side view of the paper stacking stand showing the pulled out state, and FIG. 4 is a circuit diagram of the control circuit. 31a...first paper stacking table, 31b...second paper stacking table, 41a, 41b...guide rail, 42a,
42b...Roller, 43...Table, 46...Protrusion, CT...Count output contact, DX ₂ to _{DX 8} , DC
1, DC2...Relay, SR...Latching relay, LS, LS1, LS2...Switch.

Claims (1)

[Claims for Utility Model Registration] It has a first and second paper stacking table that can be freely drawn out, and after a predetermined number of printed sheets have been ejected and accumulated on the first paper stacking table, the second paper stacking table is moved to the second paper stacking table. In a paper discharging device of an inspection rotary printing machine that similarly discharges and accumulates a predetermined number of paper sheets and thereafter performs this operation alternately, a detection output of a sensor that individually detects the draw-out state of the first and second paper stacking tables; Based on the count output of a counter that counts the number of accumulated sheets of printing paper on each of the first and second paper stacking tables,
A control circuit that sends a control output when one of the first and second paper stacking tables used for storage is pulled out and when both the first and second paper stacking tables are in a full storage state. A paper discharge device for an inspection rotary printing machine, characterized by being provided with.