JPS5847749A - Delivery apparatus in sheet printing machine - Google Patents

Abstract

PURPOSE:To extract printed samples or the like, by providing a fixing cam at an end part of a paper delivery and conveyance device and a switching cam before the fixing cam, opening a paper delivery pawl, which is passed by the switching of the cam, by the fixing cam when the paper is extracted, and delivering the paper. CONSTITUTION:When the printed samples or the like ar4 extracted during the printing operation, a locking handle is unlocked, a switching handle shaft 27 is rotated, and the switching cam 25 is switched to the position shown by a solid line. Then the paper delivering pawl 19 passes in a closed state. It is opened when a roller 22 contacts with the fixing cam 34, and the paper 5 is released from the paper delivery pawl 19. At this time, the free end of a paper guide 47 is protruded to the paper delivery pawl 19. Therefore the paper is delivered into a delivered paper receiver 39 along the lower surface of the guide 47 by inertia. The paper 5 going to fly up is forced to be fed downward by the guide 47. Air is blown to the paper surface between the neighboring paper guides 47 from an air nozzle 52 from the upper side, and the papaer 5 is not floated but is settled. Thus the amount of generating defective sheets of papaer can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper discharge device in a sheet-fed printing press that releases printed and conveyed paper from a paper discharge section and discharges it upward from a paper stacking device and a paper discharge tray. .

In a sheet-fed printing press, the quality paper printed by the printing unit is
The paper is conveyed while being held in the claws of the paper ejection chain, and at the end of the conveyance, it falls onto a device composed of claws and is stacked. When performing such printing work, the operator must check the printing condition of the printed material that is being ejected because it cannot be connected, and must visually check the ejected paper that has fallen onto the paper ejecting section due to slipping. However, in order to perform a more complete confirmation, the printing paper (hereinafter referred to as paper) that is being discharged and falling is removed and compared with an IRD and a print sample prepared in advance.

Particularly, in number printing, it is impossible to prevent fraudulent paper or print samples from being mixed in with the original paper, so it is necessary to quickly and reliably remove them.

However, in recent years, as printing presses have become faster, it has become extremely difficult to remove falling or stacked papers, and even if it is possible to remove them, problems such as misalignment of normal paper are more likely to occur. However, since the operator has to put his/her hands into the equipment during operation, there remains a major problem in terms of work safety.

The present invention was developed in view of the above points, and includes a fixed cam at the end of the paper ejection conveyance of the paper ejection chain, a switching cam in front of the fixed cam, and a normal line switching cam that opens the paper ejection mold and allows the paper ejection mold to be opened under the fixed cam. When the paper is set up, the output paper is placed on the paper stacking stand, and when the paper is removed,
By switching the switching cam, the fixed cam releases the paper discharge mold that has passed, and the paper discharge tray is placed below the paper discharge tray. By configuring the paper so that it falls on top of the paper ejection tray, paper can be ejected to another path in an orderly manner while the machine is running with the simple act of switching the switching cam (p1 manual or automatic control). To provide a paper discharging device for a nine-sheet printing press, which enables the paper to be removed, eliminates the problem of normal paper discharging due to the removal of baffle paper, and ensures work safety. Hereinafter, one embodiment of the present invention will be described in detail based on the drawings.

This embodiment shows an example in which the paper discharge device according to the present invention is implemented in a letterpress sheet-fed number printing machine equipped with a double pallet type paper stacking device. , second
FIG. 3 is a side view of the paper discharge device, FIG. 3 is a plan view, and FIG. 4 is a perspective view of the paper discharge tray. In the figure, a printing machine 1 is equipped with a paper feeding device 2, a printing unit 3, and a paper ejecting device 4. Paper S is loaded on the paper feeding device 2 and the paper S is automatically consumed. A paper stacking table 6 that rises upwardly, and a sucker device (not shown) that sucks up papers 5 one by one and feeds them onto the differential plate 1 are provided. The printing unit 3 also includes a nine-print cylinder 8 on which a numbering device is mounted on the outer periphery, an inking device 9 that supplies ink to the numbering device, and an impression cylinder 1 that applies printing pressure when printing on paper 5 by the numbering device. A paper feeding side 12 is provided which receives the paper 5 after printing and passes it to the paper discharge chain 11.

The paper ejection chain 11 connects each left and right paper ejection chain between a sprocket 13 coaxial with the paper feed side 12 and a sprocket 16 on a nine sprocket shaft 15 that protrudes inward from the paper ejection frame 14. Between the left and right paper discharge chains 11, a plurality of sets of claw shafts IT and claw stand shafts 18 are supported at regular intervals. On the pawl shaft 17 and the pawl base shaft 18, a plurality of paper ejection pawls 19 and a pawl base 20 are arranged in parallel and facing each other, and hold the paper 5 passed from the paper feeding side 12 in its mouth and eject it. The paper chain 110 is configured to be fed in the direction shown by the arrow in the figure as it runs.

Reference numeral 21 denotes an opening/closing lever that is fixed on each claw shaft 1T and opens and closes the paper discharge mold 19, and brings rollers 22 into contact with a cam (not shown) provided at the end of the shaft on the paper feeding side 12. The sheet discharge mold 19 is thereby closed, and the sheet discharge mold 19 is opened by bringing rollers 22 into contact with a fixed cam 34 and a switching cam 25, which will be described later.

On the other hand, two sets of paper stacking devices 24 (front and rear) each having a paper stacking table 23 that can be raised and lowered are disposed below the horizontally traveling paper discharge mold 19. It is set in. That is, the cam switching shaft 21 is rotatably supported on the flanged bearings 26 fitted to the left and right paper ejection frames 14, and the cam switching shaft 21 is rotatably supported on the shaft end on the operation side. There are provided a switching handle 28 for moving the switching handle 28, and a locking handle 29 that is screwed onto the threaded end portion and fixes the switching handle 28 to the bearing 26 after the switching handle 28 is operated. The switching cam 25 is formed into a rectangular plate shape, is pivotally attached to the cam switching shaft 27 and supported by the nine cam holders 30, and is formed to be movable and adjustable in the front-rear direction by providing an elongated hole 31.
By rotating the cam switching shaft 21), in the chain line position in FIG. 2, the ζ roller 22 is brought into sliding contact and the paper ejecting mold 19 is opened, and in the solid line position, the paper ejecting mold 19 is opened without making sliding contact with the grooves 622. 19 is configured to pass through with it closed.

The paper stacking device 24 stacks the paper 5 released by the opening of the paper discharge mold 19 by the switching cam 25,
a plurality of paper pads 32 for regulating the front end of the falling paper 5;
It is equipped with an adjustable paper stacking plate 33 that aligns the left and right edges in a uniform manner, and by rotating the front and rear cam switching shafts 2T in opposite directions, the falling path of the paper 5 can be changed to the front and rear paper. stacking device 24
It is configured so that it can be selectively switched to either of the following.

Further, by rotating both the front and rear cam switching shafts 21 in the same direction, the paper 5 is configured to pass through any of the paper stacking devices 24 without falling.

Next, the fixed cam 34 is supported by a cam support pin 35 protruding from the paper ejection frame 14 so as to be movable and adjustable in the front and rear direction, and the free end slot 36 is engaged with the sprocket shaft 15. being met. This fixed cam 34
By bringing the paper 5 into contact with the paper 5, the paper discharge air 19 is always opened regardless of whether the paper 5 is being held in its mouth or not. Paper discharge wind 1 by this fixed cam 34
Below the open position of 9, a stay 37 is installed between the left and right paper ejection frames 14, fixed to the s"psζ0 stay 31, and connected to a plurality of brackets 3. A paper ejection receiver 3s that receives the falling paper 5 released from the paper 1s is supported at its base end. The end is inclined downwardly and protrudes forward from the support part, and a plurality of air vent holes 40 are bored in the bottom plate.
A pair of left and right paper holders 41 are provided at the edge of the paper 5 to align the front edges of the paper 5.
In addition, on both the left and right sides, there are a pair of paper shifting plates 42 that regulate the left and right ends of the paper 5, which can be adjusted to one paper size by moving adjustment bolts 43 that support them forward and backward. It is provided so that it can be moved, and an air vent hole 44 is also bored therein.

Further, a support pipe 46 is supported between brackets 450 that protrude forward from the left and right paper discharge frames 14, and this support pipe 46 has a strip-shaped structure that supports the paper 5 on the bottom side. A plurality of paper guides 49 are supported at their base ends with their free ends facing between adjacent paper discharge winds 190 in the open position. Above this paper guide 4T, an air pipe 48 connected to an air supply device (not shown) is connected to a tip support member 51 of an arm 50 supported by a tip of a bracket 49 that projects inward from the paper ejection frame 14. This air pipe 4 is supported and constructed by
8, a plurality of air nozzles 52 are arranged side by side so as to be swingable downward from the nozzle holes t, and are configured to blow air in the direction of the paper guide 4T.

The operation of the paper ejecting device configured as above will be explained. Loosen the cook handle 29 and rotate the switching handle 28 to set the right switching cam 25 of the front and rear switching cams 25, for example, in the chain line position, and set the left switching cam 25 to the solid line position to lock the lock handle 29. Tighten. ζWhen printing starts, paper is supplied from the paper feeder 2 and sent to the printing unit 3.
The printed paper 5 is conveyed while being caught by the paper ejection wind 19 of the paper ejection chain 11 and the claw base 20, and the ζ roller 22 comes into contact with the right switching cam 25 located at the chain line position. The paper discharge claw 19 is opened and the paper is dropped and stacked on the right O paper stacking table 23 at the 5th intersection. The worker stands at the paper discharge section and when a predetermined number of sheets (1, for example, 300 to 500 sheets of paper 5 for number printing) are stacked on the paper stacking table 23 on the right side, an alarm such as a buzzer notifies the user of this. , loosen the lock handle 29 and open both switching handles 28.
After rotating the lock handles 29 in opposite directions, tighten the lock handle 29.

This is because the falling path of the K-width paper 5 is switched from the right paper stacking device 24 to the left O1m stacking device 24 while the machine O is in operation. While the paper 5 is stacked on the left paper stack 23, the right paper 5 is taken out along with the paper stack 23 and replaced with an empty paper stack 23, and then the same operation is repeated. , without stopping the machine (the paper 5 is placed in the left and right paper stacking devices 2).
4 can be loaded alternately.

In order to continue printing, it is necessary, as mentioned above, to remove a predetermined number of printed samples, or to remove fraudulent paper at the start of printing or when an accident occurs.

In the case of stacking paper, loosen the lock handle 29 on the side where discharged paper is being loaded, rotate the switching handle 28, and switch the switching cam 25 to the solid line position. The roller 22 contacts the fixed cam 34 and opens, so that the paper 5 is released from the paper discharge wind 1g. In the case of paper guide 4T, the paper discharge wind 19 while traveling is
Due to the free end facing between the paper ejection chain 1
The paper 5, which is given an initial speed when released from the paper ejection claw 19 due to the high-speed running of step 1, is ejected into the paper ejection tray 39 along the lower surface of the paper guide 47 due to inertia, and its leading edge reaches the paper abutment 41K.
'S, stops and is loaded. Note that the position of the fixed cam 34 in the front-rear direction is adjusted in accordance with the printing speed, taking into consideration the position where the paper 5 just contacts the paper pad 41 due to its inertia after being ejected. In the ejecting operation of the paper 5 carried out in the manner shown in FIG. Since air is blown from above onto the paper surface between adjacent paper guides 47 by the air nozzle 52, the paper 5 settles down without floating up.

Furthermore, 52 near nozzle companies are freely supporting us.
Since the good paper guide 4T is movable in the front and rear directions, it is possible to freely set the KM by checking the state of the paper 5 being settled. Further, since an air vent hole 40 is provided in the bottom plate of the paper receiving tray 39, air will not accumulate between the paper 5 and the bottom plate and the paper 5 will not settle properly. Then, the number of times the paper 5 is removed from the paper ejection tray 39 is several tens of times depending on the time.
It is also possible to take out sheets of paper.In this case, because the paper gathering plate 42 is movable and adjustable, the edges of the paper can be well aligned regardless of the size of the paper.

In this embodiment, an example is shown in which the switching cam 25 is switched by operating the switching handle 28, but it may also be operated by an electric push button, and furthermore, the switching cam 25 may be operated by an electric pushbutton, and furthermore, the switching cam 25 may be operated by an electric pushbutton, and the switching cam 25 may be switched by the printing unit 3 instead of by manual operation. The switching may be performed automatically by an electric signal, or in a printing machine equipped with an inspection device, the switching may be performed automatically by a fraudulent paper detection signal issued by the inspection device, and the fraudulent paper may be ejected to the paper ejection tray 39. . Further, the paper stacking device 24 is not limited to the double pallet type, but may be one set of this type.

As is clear from the above description, in the present invention, in the paper discharge device of a sheet-fed printing press, a fixed cam is provided at the paper discharge transport end of the paper discharge chain, and a switching cam is provided in front of the fixed cam. Normally, a switching cam is used to release the paper ejecting air, and the paper is ejected onto a good paper stacking table below the cam.When removing paper, a fixed cam is used to release the ejecting air that has passed through the switching cam, and the paper is ejected onto a good paper stacking table. The paper ejection tray provided at the bottom is configured to eject the paper from the upper sail, and a paper guide and an air nozzle are provided above the paper ejection tray so that the ejected paper falls on the upper side of the paper ejection tray. By simply switching the switching cam through manual operation using a pushbutton or automatic control using electric signals, you can switch between discharging paper to the paper stacking device and discharging the paper to the paper ejection tray while the machine is running. Since it is possible to remove fraudulent papers and printed copies without touching them, it is possible to eliminate the occurrence of disturbances in normal paper output due to paper removal, and to reduce the amount of paper waste. It is possible to reduce the amount of work required and eliminate the need for paper alignment, as well as improve work safety and eliminate the need for skill. First, since the paper ejection tray has a good grip on the upper paper, the paper ejection is switched in an orderly manner, and no accidents occur. Furthermore, compared to the case where a dedicated loading device is provided for paper removal IS, the structure is simpler and the space occupied can be reduced.
By automating the switching of the switching cam, work management becomes extremely easy.

[Brief explanation of the drawing]

1 to 4 show an embodiment of a sheet-fed printing press O sheet discharge device according to the present invention, and FIG. 3 is a side view of the paper ejection device, FIG. 3 is a plan view thereof, and FIG. 4 is a perspective view of the paper ejection receiver. 1... Printing machine, 4... Paper discharge device, 5... Printing paper, 11... Paper discharge chain, 19... Paper discharge wind, 24... Paper stack Device, 25 Self... Switching cam, 34
...Fixing force A, 39... Paper ejection receiver, 41...
・Paper guide, 52...Air nozzle・ Patent applicant: 1 person from Komori Printing Machinery Co., Ltd. Masaki Yamakawa (#1 person from cram school)

Claims (1)

[Claims] A fixed cam fixed to the running end of the paper ejection chain O to open the paper ejection part, a position swingably supported above the paper stacking device to open the paper ejection part, and a position where the paper ejection part is broken when the paper is closed. a switching cam that can be selectively switched to ζO, a paper ejection tray that is inclined and protrudes from below the paper ejection claw opening position of the fixed cam, and a paper ejection tray that is provided with an idle position above the ζO paper ejection tray. A plurality of zero paper guides are arranged in parallel with their ends facing between the adjacent paper discharge sections in the open position O and guide the discharge of paper on their lower surfaces, and an air nozzle is supported above the paper guides with nozzle holes facing downward. A sheet-fed printing press O paper discharge device characterized by: