JP2000233861A - Printing sample take-out device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device capable of surely taking out a printed sheet by a simplified method. SOLUTION: A holding device formed out of a single or plural paper tables 3 is provided for the side of an operator at a delivery pile 2. These paper tables are provided together with a stopper vertically disposed so as to be off-set to the peripheral part of the delivery pile 2 in the paper carrying direction. The paper tables 3 are connected with a leading edge stopper 8 and a paper high position holding device 9 allocated to the leading edge stopper. When the leading edge stopper 8 is toppled, a guide piece 5 is formed into a guide surface L1, and the guide surface carries a printing paper 6 to a moving position. A printing sample P can be held by a holding piece 4, and the sample P can be taken out by releasing the holding action.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a print sample removing apparatus according to the preamble of claim 1.

[0002]

2. Description of the Related Art In a sheet-fed rotary printing press, printed sheets are fed to a delivery pile. In this case, it is sometimes necessary to take a print sample from the pile and adjust the print result. At this time, the sheet supplied on the auxiliary device is removed, and the sheet under the sheet is extracted from the pile.

A device of this kind is described in German Patent Publication No. 3 230 43
This is known from Japanese Patent Publication No. 6 The device for feeding sheets and removing print samples in a sheet-fed printing press has a so-called rear grip for the sheets fed into the delivery device of the printing press. In addition, two pneumatic auxiliary devices are provided, which are used for fixing the sheet to be fed. In this case, the first auxiliary device feeds the sheet to the first auxiliary device, holds the sheet between the first and second auxiliary devices, and sends the subsequent sheet to the second auxiliary device. A second auxiliary device is provided so that it can be sent out. The held sheet is subsequently removed between the two auxiliary devices. At the same time, air is blown from the auxiliary device above and below the held sheet. This device has a number of relatively complex and relatively controlled components.

[0004]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an apparatus which can reliably remove sheets in a much simplified manner.

[0005]

This problem is solved by the features of claim 1. In doing so, the invention takes into account in particular the removal of the sheets in a reliable manner and in a very simplified manner. The printing paper provided for sending out as a print sample is reliably guided from the pile area to the offset take-out position. In a preferred embodiment, the device is configured to be able to grip printing paper. In a further embodiment, the device can automatically grip the fed sheet by means of a gripping mechanism. The apparatus is suitably controlled so that a plurality of sheets are continuously removed. The removal of the sheet is preferably carried out in such a way as to be compatible with the ergonomic course of the removal of the print sample.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a chain transport mechanism 1 of a sheet-fed rotary printing press is provided on a delivery pile 2. The printing sheet 6 is fed toward one or more leading edge stops 8. In the area of the leading edge stop 8 there is provided a so-called sheet height holding device 9 formed as a small pneumatic cylinder. The sheet height holding device 9 is activated when a print sample is removed from the area of the delivery pile 2. At the same time, the leading edge stopper 8 is pivoted away from the delivery pile 2 by a suitable control mechanism.

FIG. 1 shows a state in which one leading edge stopper 8 is associated with a sheet height holding device 9. In the normal position, the leading edge stopper 8 is in contact with the delivery pile 2. When the sheet height holding device 9 is in the rest position, it is outside the area of the delivery pile 2. Below the sheet height holding device 9, a gripping device for a print sample is provided. The gripping device comprises a sheet table 3, a grip 4,
And a guide piece 5. The guide piece 5 is provided parallel to and on the same plane as the pile front edge S of the delivery pile 2 in a stationary state, that is, in a substantially vertical state. The sheet carrier 3 and the gripping piece 4 are provided at positions offset with respect to the pile edge S. The gripping piece 4 is formed as a rotatable lever, and the lower end of the gripping piece 4 is
Or is arranged at a very small distance from the sheet table to the sheet table 3. The sheet carrier 3 is formed as a sheet stopper provided substantially vertically. The sheet carrier has at its lower end a horizontal support surface against which the gripping pieces 4
Can also be provided.

All figures show the case where only one print sample removal device is arranged, but in practice at least two such devices are located above the pile edge S of the delivery pile 2. Usually, they are provided in parallel with each other. For ease of implementation, it is also possible to provide only one gripping device with the sheet table 3 and the gripping piece 4 for the two sheet height holding devices 9.

FIG. 2 shows a state at the start of taking out a print sample. When a signal for taking out a print sample is issued, the leading edge stopper 8 is actuated first. The leading edge stopper 8 is then lowered from the position of the delivery pile 2 to a horizontal position. At the same time, the guide piece 5 is tilted from the vertical position to an inclined position away from the pile edge S. For this purpose, the guide piece is pivotally suspended at its upper end and connected to a tilting mechanism, but details of the tilting mechanism are not shown. The guide piece 5 is arranged together with the gripping piece 4 so as to form a guide surface L1 inclined with respect to the sheet transport direction R. The gripping piece 4 can also be provided with a guide member 10 for that purpose. Further, the lower end of the gripping piece 4 is also inclined so as to form a descending surface facing outward from the delivery pile 2. Therefore, the guide surface L1 extends from the area of the sheet transport path to the tip of the gripping piece 4.
At the same time, the front edge stopper 8 and the sheet carrier 3 form a horizontal guide surface L2. The horizontal guide surface L2 is formed by a surface provided at the corresponding upper side of the sheet base 3 and the front edge stopper 8 when the front edge stopper 8 is horizontally tilted and reaches the area of the sheet base 3. Are realized by overlapping. In the direction of the devices arranged in parallel, the sheet carrier 3 and the leading edge stop 8 are each connected to one another in some way. The first printing sheet 6 arriving after the leading edge stopper 8 has been lowered or the guide piece 5 has been tilted and released from the chain transport mechanism 1 is provided on the sheet table 3 by the residual speed. To the specified vertical stopper 11. At this time, the gripping piece 4 is rotated in the sheet transport direction R by the printing sheet 6 which simultaneously enters the gap between the sheet table 3 and the gripping piece 4. The gripping piece 4 has its own weight and, in some cases, lightly elastic pressure applied thereto, and uses the printing sheet abutting against the stopper 11 of the sheet base 3 as a print sample P to form the printing sheet P. Hold on a horizontal mounting surface.

FIG. 3 shows a next operation state of the present apparatus. After holding the print sample P, the next printing sheet 6
Before the sheet is released from the chain transport mechanism 1, the sheet height holding device 9 is operated. At this time, the piston of the sheet high position holding device, which can be sharpened at the front side and can be slightly bent downward, is provided with the piston 2 of the delivery pile 2 obliquely downward, that is, in a direction substantially opposite to the sheet transport direction R. Since it is inserted into the area, when the printing sheet 6 arrives, it is placed on the sheet height holding device. The subsequently supplied printing sheet 6 is also placed on the piston of the sheet height holding device 9.

In order to reliably adjust the position of the printing sheet 6 arriving later, the holder 12 hinged to the upper part of the guide piece 5 is returned to the vertical position again. The holder 12 is rotatably suspended at the height of the sheet path of the chain transport mechanism 1. With this support configuration, a guide surface L1 extending from the sheet path to the sheet table 3 is formed in the final state, while the sheet height position holding device 9 is rotated and returned. A stop surface is formed which is flush with the pile edge S for the loaded printing sheet 6.

The holding member 12 can also be rotatably provided on the rotating member 13 because of its ease of movement and the length of the guide surface L1. In this case, the rotating member 13 is rotatably suspended at the height of the sheet transport path of the chain transport mechanism 1. In FIG. 1, the rotating member 13 is horizontal and
, And the holder together with the guide piece 5 is disposed at a vertical extension position. In FIG. 2, the guide piece 5, the holder 12, and the rotating member 13 are arranged at an almost extended position in an inclined position with respect to the sheet transport direction R, and the guide surface L <b> 1 is provided.
Is formed. In FIG. 3, the pivoting member 13 is pivoted to the horizontal position again, the holder 12 is pivoted to the vertical position, and the guide piece 5 is still inclined.

FIG. 3 shows the pulling movement of the print sample P. In this figure, the holder 12 is arranged at a vertical position, and the guide pieces 5 are still arranged at an angle. The rotating member 13 is returned to the horizontal position again. Thereby, the guide piece 5 and the holder 12 have been lifted somewhat. The holding device 12 is located in the working area of the leading edge of the printing sheet 6 placed on the sheet height holding device 9. The print sample P, which is placed on the sheet carrier 3 and held by the gripper 4, must be opened in order to be completely removed from the sheet delivery device. To do so, at least the sheet table 3
But, if necessary, together with the gripping piece 4 in the sheet transport direction R
Is rotated. The movement of the gripping piece 4 and the sheet board 3 is such that the gripping piece 4 first releases the print sample P on the sheet board 3,
Subsequently, control is performed so that the two members are rotated together without moving the print sample P. When pivoting,
The gripping piece 4 slightly precedes the sheet table 3, which drives the pivot axis of the gripping piece 4, and the sheet table 3 is likewise driven with play via this rotating axis. It is realized by doing. At this time, since the sheet table 3 moves behind the gripping piece 4 due to gravity, the gripping piece 4 does not contact the horizontal mounting surface of the sheet table 3. The gripping piece 4 may come into contact with a vertical stopper of the sheet table 3 when moving together with the sheet table 3. Thereafter, the print sample P is released on the leading edge stopper 8 and pulled out of the pile area. At this time, the printing operator must not touch the pile area. There is no danger of the moving members colliding.

The known problem of adhering adjacent sheets can be solved by blowing air between the sheet to be drawn and the placed sheet by means of a blower.

When the removal of the print sample is completed, the leading edge stopper 8 is again moved down toward the delivery pile 2. At the same time, the guide piece 5 is lowered toward the delivery pile 2, and the sheet table 3 is moved again to the initial position together with the gripping piece 4. On the other hand, the sheet height holding device 9 is returned to the initial position at a slightly shifted time, and the sheet 6 held high is lowered onto the delivery pile 2 again. At this time, the sheet held high is brought into contact with the holder 12 and is guided by the guide piece 5 to the area of the front edge stopper 8, so that the sheet is adjusted with respect to the pile edge S.

The control of the sheet carrier 3, the gripping piece 4, the guide piece 5, the holding device 12 and the sheet height holding device 9 is effected by corresponding transmission members. Such transmission members are not described in detail here, but are purely mechanical and interconnected lever devices, which are actuated by pneumatic drives. A drive can also be provided in each of the individual components (leading edge stopper 8, sheet carrier 3 and gripping piece 4, guide piece 5 and holder 12, sheet height holder 9). When all processes are suitably automated, the print sample P is derived in a single step and arranged for removal. When returning to the original position, the sensor monitors whether or not there is a print sample P in the area of the fallen leading edge stopper 8, and after taking out the print sample P, that is, when there is no print sample P, Automation can be achieved by returning the entire device to the basic position via corresponding signals.

The entire apparatus can be automated in a very advantageous way for use in connection with a printing press for processing sheets. The gripping device consisting of the sheet carrier 3, the gripping piece 4 and the guide piece 5 can grip and hold a plurality of print samples P one after another, which is advantageous for various purposes in different operating states. Can be used.

In this regard, for example, when printing on both sides of a sheet during the operation of the printing press, several sheets which must be removed from the sheet feeder in advance for the purpose of optimal quality control are taken in advance. Choice is desirable from many aspects.
It may also be necessary to remove the printing waste in certain operating conditions of the printing press. In other words, the unusable printed sheets generated during the start-up operation or when the printing is interrupted are removed from the sheet feeding device. The number of printed sheets to be ejected is, if necessary, determined by the signal obtained from the rotational speed of the sheet-conveying member of the sheet-processing machine. For example, the number of revolutions of a printing cylinder of a printing press that processes a sheet and is coupled to a sheet feeding device is preferable. The number of rotations of the printing cylinder, directly or together with a coefficient, specifies the number of printing sheets 6 reaching the sheet delivery device according to the number of holding mechanisms provided on the printing cylinder. This number is compared to the number of previously selected sheets. The arrival timing of the sheet is determined by the release of the printing sheet 6 by the chain transport mechanism 1. If the previously selected number of sheets matches the recognized number of sheets, the ejection process ends according to these timings.

With respect to the course of control of the associated components, only slight differences occur in this case. Removal of the print sample is initiated in the usual manner as described above. Sheet-high position holding device 9 for gripping a subsequent printed sheet 6
Is carried out only after a preselected number of printed sheets 6 have arrived at the sheet table 3. The arrangement in which the gripping device is arranged as in FIG. 2 is necessarily extended for that purpose. Thereafter, the sheet height holding device 9 is introduced into the pile area. Subsequently, the print sample P or the printing waste paper is released again and taken out. Finally, the gripping device is returned to its original basic position as described above.

Such a process can be used in a particularly suitable way to greatly simplify the removal of print samples for quality control or the removal of print broke from the feeder pile. The control can also be performed at the start of the removal process for a particular printed sheet. In that case, it is also possible to take out a freely selectable set of printed sheets each time with a freely selectable rhythm. Also, at the beginning of the printing process, a set of print sheets that can be freely selected in each case can be taken out as printing waste.

[Brief description of the drawings]

FIG. 1 is a side view showing an initial state of a sheet feeding device including a print sample removing device.

FIG. 2 is a side view showing a first state for taking out a print sample.

FIG. 3 is a side view showing a second state for taking out a print sample.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chain conveyance mechanism 2 Feeding pile 3 Sheet board 4 Grasping piece 5 Guide piece 6 Printing sheet 8 Leading edge stopper 9 Sheet high position holding device 10 Guide member 11 Stopper 12 Holder 13 Rotating member P printing Sample R Sheet transport direction S Edge of pile

Claims (20)

[Claims] 1. A delivery pile (2), provided on a delivery device of a printing press, for taking out a print sample for a printing sheet (6), and a sheet of said printing sheet (6). A front edge stopper (8) provided on the delivery pile in parallel with the front pile edge (S) of the delivery pile (2) formed in the transport direction (R); and the front pile edge (S). ), And a sheet height position holding device (9), which is provided above and opposite to the sheet conveyance direction of the printing sheet (6) and is substantially opposite to the sheet conveyance direction of the printing sheet (6); ) And control means for controlling the movement of the sheet height holding device (9), wherein at least one first sheet stopper is provided with the front pile edge ( S) offset in the sheet transport direction (R) with respect to S) A further sheet contacting the first sheet stopper and being rotatable from a vertical position when the first sheet stopper is moved in a direction opposite to the sheet transport direction (R). A stopper is provided, the further sheet stopper forms a guide surface (L1) which is inclined with respect to the sheet transport direction (R) and reaches the first sheet stopper, and further comprises at least the leading edge Part stopper (8)
A guide surface (L2), which is horizontal and opposes the guide surface (L1), is formed on the first sheet stopper at a position where the guide sheet (L1) is tilted. 2. The guide surface (L1) is formed by a guide piece (5) which is parallel to the front pile edge (S) in a basic position and the front edge stopper (5). 2. The device according to claim 1, wherein the guide piece is rotatable in the sheet transport direction. 3. 3. The device according to claim 2, wherein the upper end of the guide piece (5) is hinged to a pivotable holder (12). 4. The holding tool (12) pivots between a position forming a part of the guide surface (L1) and a vertical position where the sheet height holding device (9) is interposed. Apparatus according to claim 3, characterized in that it is possible. 5. The guide piece (5) and the holder (1).
5. The device according to claim 3, further comprising a control device which can be adjusted to an inclined position or a vertical position, cooperatively or separately from each other. 6. The printing device according to claim 3, wherein the holding device is hinged at a height of the printing sheet conveyed by a chain conveying mechanism. An apparatus according to any one of the preceding claims. 7. The sheet stopper (1) is formed as a sheet carrier (3) including a vertical stopper (11), the sheet carrier (3) having a horizontal mounting surface. Apparatus according to any one of the preceding claims, characterized in that: 8. A horizontal mounting surface of the sheet carrier (3),
In the basic position of the sheet support (3), the guide surface (L2) is formed flush with a stopper surface formed above the folded front edge stopper (8). The apparatus according to claim 7, wherein: 9. A gripping piece (4) rotatably provided in a sheet conveying direction (R) is provided opposite to a horizontal mounting surface of the sheet table (3). Apparatus according to any of the preceding claims, characterized in that it is located. 10. A guide surface inclined with respect to the sheet transport direction (R) is provided below the gripping piece (4), and the guide surface is substantially continuous with the guide surface (L1). 10. The device according to claim 9, wherein the device is provided as follows. 11. The gripping piece (4) in an initial position.
Is provided on the horizontal placing surface of the sheet table (3), or is separated from the horizontal placing surface by a dimension smaller than the thickness of one printed sheet (6). The device according to claim 9, wherein the device is provided at a predetermined position. 12. The sheet carrier (3), wherein the gripping piece (4) is provided on the sheet table (3) so as to rotate in the direction opposite to the sheet conveying direction (R) by the action of gravity. Apparatus according to any one of claims 9 to 11. 13. The sheet carrier (3) is arranged such that the gripping piece (4) is urged by an elastic force to rotate in a direction opposite to the sheet transport direction (R). Apparatus according to any one of claims 9 to 11, characterized in that: 14. The device according to claim 1, further comprising a control device for pivoting at least the sheet carrier (3) from a gripping position to an open position. 15. When pivoting from the gripping position to the release position, the gripping piece (4) is brought into contact with the sheet carrier (3).
And when rotating from the open position to the gripping position, the sheet table (3) can rotate before the gripping piece (4). 2. The control device according to claim 1, further comprising:
An apparatus according to claim 4. 16. A plurality of print samples (P) are continuously supplied to a start position related to a rotation position of a printing press, and the plurality of print samples (P) are successively provided on the sheet stand (1). 3) a control device is provided, which is mounted on the sheet board (3) so as to be able to hold a plurality of the print samples together on the sheet board (3) by the gripping piece (4) each time. Device according to any of the preceding claims, characterized in that: 17. The apparatus according to claim 16, wherein the control device is arranged such that the number of print samples (P) to be supplied can be selected in advance. 18. A method for removing a print sample from a delivery pile provided in a delivery device of a printing press, the method comprising: holding a transported printing sheet (6) at a partially high position to hold the transported printing sheet (6) partially high. A leading edge stop (8) for moving the device (9) into the area of the delivery pile (2) and opening the upper pile area of the delivery pile (2).
In which the front edge stopper (8) is lowered,
Forming a horizontal first guide surface (L1) leading to a region of a first sheet stopper provided offset in the sheet transport direction (R) with respect to the front pile edge (S); After the leading edge stopper (8) has been lowered down to form the second guide surface (L2), a further sheet stopper is moved upwardly from the vertical position in the sheet transport direction (R). , Where the second guide surface (L2) also reaches the area of the first sheet stopper, and is released by the chain transport mechanism (1). ), The second guide surface (L2)
Along the first guide surface (L1) and until it comes into contact with the first sheet stopper, and moves one or more printed sheets forward of the delivery pile (2). The sheet is conveyed so as to be stationary at an offset with respect to the edge (S). Thereafter, the sheet height holding device (9) is advanced into the pile area and released by the chain transfer mechanism (1). A printing sheet (6) is placed on the sheet height holding device (9), and a front edge of one or a plurality of the printing sheets (6) as a print sample (P) is removed. Opening the first sheet stopper by reversing it in the sheet transport direction (R) to take out, taking out one or more print samples (P), Stopper and further sheet stopper and said leading edge stop Returning the pile (8) to a vertical base position and returning the sheet height holding device (9) from the pile area to an initial position. 19. One or more print samples (P) are held on a horizontal placing surface when abutting the first sheet stopper, and one or more print samples (P) are held. 19. The method according to claim 18, wherein the holding is released to release the moved leading edge of P). 20. A method for preselecting the number of print samples (P) in relation to the control of a sheet feeding device, generating a start signal, and printing the next printed sheet conveyed by the chain conveying mechanism (1). From (6), a number of printed sheets (6) corresponding to a preselected number of the printed samples (P) are taken out as printed samples (P) and the front pile on the sheet table (3) is taken out. Arranged at a position offset with respect to the edge (S), the sheet height holding device (9) is advanced into the pile area for holding the next arriving printed sheet (6). Releasing the print sample (P) arranged at the offset position, and transferring the print sample (P) to the delivery pile (2).
20. The method according to claim 18 or 19, wherein a plurality of sheets are taken out of the pile area at the same time.