JP2006264984A - Paper sheet rear edge support device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To compactly constitute this device, by surely enabling auxiliary stacking part to travel in even in any printing material (a printing object) or at a mechanical speed, by improving a conventional form paper sheet support device in a paper sheet delivery device of a paper sheet processing machine. <P>SOLUTION: In a standard size adjustable support device, at least one separator 15 can travel in a stacking paper area of the paper sheet delivery device 1 in the substantial center in the paper sheet carrying direction R above an auxiliary paper stacking device 2, and is arranged so as to form a placing area tapering off outward from the center. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sheet support device in a sheet discharge device of a sheet processing machine of the type described in the superordinate concept section of claim 1.

  Frequently, an auxiliary stacking device is provided in the sheet discharge device to perform non-stop sheet replacement. The auxiliary stacking device can enter the stacking area of the sheet discharge device from the sheet processing machine during the conveyance of the sheet. For this purpose, for example, a device in the form of a so-called rolling blind is used. The roll-up blind has a row of support members, which can be driven by drive chains into the gaps in the sheet flow that are conveyed in the area of the sheet discharge device. The support member may be covered by a roll-up blind cloth (Rollotuch), thus forming a flat, temporary loading surface (Ablageflaeche) and also replacing the sheet stack from the sheet discharge device In the middle, the sheet stack is accommodated as a sheet transported further during the sheet stacking. In this case, it must be further ensured that the sheet placed on the auxiliary stack is temporarily placed on the edge accurately. Accurate stacking should be maintained even if the auxiliary stacking device is removed from the stacking space again and the stacking operation continues normally. The important point is that the winding blind can enter the stacking area without hindrance. In this case, it should be ensured that the sheet does not hit any sheet during indentation, and thus that no sheet is slid on the stack or even damaged. .

  A device of this type is known from US Pat. The document discloses a plurality of sheet supporting devices, and the sheet supporting devices have different purposes along the holding device of the device at various points, for the following purposes: When the device contacts the edge of the sheet to be captured from below, it can be assembled with the aim of supporting the edge at the location of the unprinted corridor. The plurality of sheet supporting devices are formed in a bar shape, and are brought together from the preparation position to the capturing position while sliding in the longitudinal direction of the sheet supporting device.

  One problem with the sheet support device follows from the sheets that have been processed, especially from the sheets processed by the rotary printing machine, into the stack of sheets in the sheet discharge device and to the topmost sheet of the stack. A gap is formed between the sheet and another sheet, and then an auxiliary sheet underlay, for example, the roll-up blind, is pushed into the gap for replacing the sheet during continuous printing. The sheet support device of the known device does indeed have a correspondingly large number distributed along the edge to form a gap along the edge of the sheet to be captured from below. Yes. However, this does not guarantee that the entire sheet support device captures the same sheet from below at its capture position. This is because processed sheets often do not have straight edges.

  Furthermore, according to Patent Document 2, an apparatus for capturing a sheet from below is known. The device is used in a sheet discharge device and is used to capture the edge of the sheet from below with a sheet support device adjustable to the location of the edge. With this device, it is achieved that all the sheet support devices of the device capture the edge of the same sheet from below. For this purpose, the sheet supporting device is arranged so as to be movable in the longitudinal direction of the edge and can be assembled. One sheet separator has a sheet support device in its assembled state.

  In use, in order to capture the edge of the sheet from below, in a first step, the sheet separator is brought from its preparatory position to its capture position. Since the sheet separator has a plurality of assembled sheet support devices, the sheet separator engages the sheet from below at a single point along the edge. This forms a defined gap. In the second step, the gap is expanded over the edge of the sheet by first causing the plurality of assembled sheet support devices to run away from each other in the longitudinal direction of the edge. The

  Furthermore, according to Patent Document 3, an auxiliary stacking device in a sheet discharge machine of a sheet processing machine, particularly a printing machine is known. In this case, auxiliary stacking supports that can be pushed in the paper discharge device are known. Furthermore, a separating bar is provided in the paper discharge device in a state corresponding to the downstream side to the stacking area, and the separating bar is configured to raise the sheet while the auxiliary stacking support is running. It comes to hold. For this reason, the separating bar is swept into the stacking area from a position in front of the front of the stacking area, so that it does not use much space. In this case, the separating bar has only a small mounting surface. This is extremely disadvantageous especially in the case of large standard size sheets. This is because in this case, the sheet may settle down along with the separating bar.

In other words, the fundamental problem is that production interruption may occur in the sheet discharge device when the auxiliary stacking device having an auxiliary stacking support, for example, a winding blind, is introduced. It is not only the sheet that has been severely wrinkled by the blinds, but also machine damage. The cause is that, in general, each auxiliary stack support (rolling blind, sword, rake, etc.) collides with the edge of the sheet falling onto the sheet stack. In this case, the sheet is inevitably deformed and may enter into other components involved in the temporary placement of the sheet, such as a take-off gripper, spray frame, and subsequent gripper system. . Accordingly, an object of the present invention is to fundamentally avoid collisions with the edges.
European Patent Application No. 0987105 German Patent Application Publication No. 10211007 German Patent Application No. 10322546

  The object of the present invention is to improve the device of the type described in the superordinate concept part of the independent claim in the simplest form possible and to ensure that the auxiliary stacking paper is whatever the printing material (substrate) or machine speed. It is to allow the support to enter, and to make the device compact.

  The problem is solved by the features described in the characterizing part of the independent claims.

  According to the present invention, one device or separation device is held at the edge of a sheet, which is exposed to the danger of a collision, so that one or more auxiliary stack supports run under it without danger. In order to obtain, it is proposed to arrange in a sheet discharge device.

  The apparatus consists of one or more separating members, which are arranged above the auxiliary stack support and are located outside the standard sheet size. The end of the separating member may be tapered or rounded. The separating member may be coupled to one or more transverse members that mechanically couple the separating member, the length of the transverse member being, for example, an elastic string, a wire rope with a spring, a telescoping type It is variable like a rod. In response to the control signal, the one or more separating members run into the stacking space, and at least the edge of the sheet is positioned thereon. The single member / plurality of separating members together with the transverse member form a supporting portion, and the supporting portion may be formed in a triangular shape or a trapezoidal shape, for example. This prevents loosening even for biegeweich printing materials.

  Alternatively, the separating member is swung into the inner position of the stack area from the position parallel to the rear edge by the driving device. An auxiliary separating member is coupled to the separating member, and the length of the auxiliary separating member is variable, such as an elastic string or a wire rope with a spring. In response to the control signal, the one or more separating members enter and swivel into the stacking space, and at least the end of the sheet is positioned thereon. The single member / plurality of separating members together with the transverse member form a supporting portion, and the supporting portion may be formed in a triangular shape or a trapezoidal shape, for example. Thereby, even if it is a bending soft printing material, it is prevented that it loosens.

  The drive of the separating member can be performed, for example, in an electric type, a hydraulic type or a pneumatic type. The transverse member, like the separating member, is located outside the stacking area during normal continuous printing.

  The original auxiliary stack support only enters when it is ensured that the sheets that fall further below the separating device also reach the area below the auxiliary stack support. For this purpose, for example, a corresponding sheet of time has been awaited or a falling sheet is detected by a sensor below the separating device. When the auxiliary stack support is fully or partially entered, the separating device returns to its non-working position.

  The activation control of the support member can be performed accidentally, can be performed with time or angle control, or can be performed with control by a sensor. In the case of start-up control by sensors, one or more sensors detect the falling sheets or the gaps between the falling sheets, and thus the separating device has two sheets of paper. It is possible to enter the gap as expected. The sensor may be formed, for example, by ultrasound, by optical means, by capacitive measurement, or by sensors of other properties.

  Advantageously, an inherently effective auxiliary stack support is only possible if it is ensured that the further falling sheet below the separating device also reaches the area below the auxiliary stack support. Run into the stack area of the paper delivery device. For this purpose, for example, a corresponding sheet of time has been awaited or a falling sheet is detected by a sensor below the separating device. When the auxiliary stack support is fully or partially entered, the separating device returns to its non-working position.

The described separation device has different advantages. That is,
(A) The configuration of the separating device is extremely compact and inexpensive, and the separating device can be retrofitted very easily in a sheet discharge device equipped with a non-stop device.
(B) The essential point is to reliably avoid edge collisions and the consequences from production interruption to damage resulting from the collisions.
(C) It is possible to reduce misprinted paper. This is because the lowest sheet of the auxiliary stack will contact the auxiliary stack support only if it is relatively long inside the stacking area and will be too far away if the separating device is reasonably long. Because they are not taken to The placed sheet is kept in a positionable state.
(D) In the winding blind as an auxiliary stacking paper support, a supporting member such as a string or a band for bridging or covering a free space between a plurality of rolling blind bars (Rollostaebe) may be omitted. Is simplified. The support member prevents the back sheet edge from entering between the two rolled-up blind bars of the auxiliary stack support that travels and passes under the sheet. ing.

  In the following, embodiments of the invention will be described in detail with reference to the drawings.

  FIG. 1 shows a schematic overview of a sheet discharge device 1 for so-called non-stop stacking paper replacement. In the sheet discharge apparatus 1, processed sheets are conveyed for stacking continuously from the sheet processing machine in the conveying direction R by a conveying system 10, for example, an endless chain conveyer. Come. In this case, the sheet is temporarily placed on the sheet stack 7 toward the front stack stopper 11. During temporary placement, the sheet is pulled from the transport system 10 via the sheet brake 13 for purposeful positioning, and the rear edge of the sheet is fixed by the rear stack stopper 14. Is done. The sheet brake 13 and the stack stopper 14 may be coupled to each other and may be adjusted together to the required sheet standard size of the sheet stack 7.

  In order to replace the complete sheet stack 7 with a new empty stack transport means, for example an empty stack pallet 12, without interruption, an auxiliary stack 2 is provided in the sheet discharge device 1. It has been.

  The auxiliary stacking device 2 has a support frame 3, and the support frame 3 is arranged to be moved up and down in the sheet discharge device 1 by an auxiliary stack lifting mechanism 4. The support frame 3 is provided with an auxiliary stacking support 5, for example in the form of a roll-up blind, which is arranged in the stacking area of the sheet discharge device 1 during the stacking exchange. The auxiliary stack 6 can be temporarily formed by the auxiliary stack support 5 at this location.

  For this purpose, the auxiliary stacking support 5 has a support member such as a bar or a tube, and the support member is guided in the guide portion by the drive chain and is stacked in the sheet discharge region of the sheet discharge device 1. It is possible to run in.

  For this purpose, the auxiliary stack support 5 may be provided with a hoisting blind cloth covering the support member, according to a known embodiment, so that substantially on the auxiliary stack support 5. A smooth temporary mounting surface is formed. For the purpose of bridging the intermediate space between the rolled-up blind bars, it is also possible to use narrow strips or strings for surrounding the rolled-up blind bars. Thereby, in particular, the sheet edge of the first sheet to be temporarily placed cannot reach the intermediate space.

  In this case, the sheet is temporarily placed on the auxiliary stack support 5 so that the sheet becomes the auxiliary stack 6. Moreover, during the formation of the auxiliary stack 6, the auxiliary stack device 2 maintains an appropriate interval between the upper surface of the auxiliary stack 6 and the transport system 10 for releasing the sheet in the auxiliary stack lifting mechanism 4. It is possible to move up and down.

  The main stack 7 that receives the sheets during the normal production process of the sheet discharge apparatus 1 is positioned by the stack lifting mechanism 9 on the stack support plate 8 below the auxiliary stack 6. When replacing the stack, the auxiliary stack 6 is taken out from the sheet discharge device 1 while being formed on the auxiliary stack device 2.

  In order to introduce the auxiliary stack support 5 into the stacking area during the production process, i.e. while the transport system 10 continuously feeds the sheets, the auxiliary stack support is introduced into the sheet flow. It is necessary to find a gap where 5 can be run.

  For this purpose, according to the invention, the separating device is arranged so that the auxiliary stack support 5 is run under this while the edge of the sheet exposed to the risk of collision is held high. It is arranged in the leaf paper discharge device 1.

  FIG. 2 schematically shows the arrangement form of the separation device 15. In principle, the separating device 15 comprises one or more separating members 16, which are arranged above the auxiliary stacking support 5. In the non-working state, the position of the separation device 15 must be located outside the sheet standard size preset by the sheet stack 7. The separating member 16 may be tapered at its ends or rounded.

  FIG. 2 shows the sheet brake 13 in a plan view. A stack stopper 14 can be connected to the sheet brake 13 downward (not shown here) (see FIG. 3). A pneumatic cylinder 17 is arranged in the center of the sheet brake 13 when viewed in a direction transverse to the sheet conveying direction R. The pneumatic cylinder 17 includes an operating piston 18 that is pulled out here. Is shown. The operating piston 18 of the pneumatic cylinder 17 is directed in the sheet transport direction R and is used as the separating member 16. For this purpose, the front end of the working piston 18 is rounded or sharpened.

  The single separation member 16 or the plurality of separation members 16 may be coupled to one or more lateral members that mechanically couple the separation members, and the length of the lateral members is variable. For this purpose, different members can be used, such as elastic strings, spring-loaded wire ropes, telescopic rods and the like.

  FIG. 2 shows a thin rope 19 that is guided through the tip of the separating member 16. The rope 19 may be rigidly coupled to the front end of the separating member 16 or may be movably guided by the front end of the separating member 16. For this purpose, the rope 19 may be anchored at its end in a stationary position (ie fixed to the cradle) and when the separating member 16 is moved, a spring 20 (see FIG. 3) or a winding. It can be held under tension by a take-up or pay-out mechanism.

  In order to ensure that the separating member 16 and the rope 19 can not interfere with the falling sheet B, as described above, the arrangement form of the separating member 16 and the rope 19 is the stacking area in the non-working state. Is considered outside. For this purpose, a notch opened toward the sheet stack 7 may be provided in the area of the holding part of the sheet brake 13 and the rear stack stopper 14 (see FIG. 3), The notch extends through the stacking stopper 14 parallel to the top surface of the stacking sheet. The rope 19 can be pulled into the notch when the separating device 15 is not in operation. Thereby, the separation device 15 is located outside the movement region of the falling sheet B during normal stacking operation.

  In response to the control signal, the separating member 16 runs into the stacking space until the standard size edge of the sheet stack 7 is exceeded, and at least the end of the sheet B is positioned thereon. The separating member 16 together with the rope 19 forms a mounting area defined in a triangular shape. The placed sheet B is supported by the separating member 16 or the operating piston 18 and the tensioned rope 19. Thereby, even if it is a bending soft printing material, it is prevented that the mounted paper is loosened.

  In one alternative embodiment, a plurality of separating members 16 may be arranged in the separating device 15. In FIG. 2, the arrangement form of two parallel separating members 16 ′ and 16 ″ and ropes 19 ′ and 19 ″ fixed to the separating members is indicated by broken lines. The support members 16 ′; 16 ″ are arranged symmetrically with respect to the center of the sheet brake 13 when viewed in a direction transverse to the sheet transport direction R.

  After the separating members 16 ′, 16 ″ are confined in the stacking space until they exceed the standard size edge of the sheet stack 7, the end of the sheet B is again supported here. The separating members 16 ′, 16 ″ together with the ropes 19 ′, 19 form a placement area defined in a trapezoidal shape for the sheet B to be placed. For this purpose, another rope may be stretched between the separating members 16 ′, 16 ″. Similarly, a continuously continuous rope may be stretched across the two separating members 16 ', 16 ".

  In the case where a guide device for cut sheets is provided in the sheet discharge device 1, the separating members 16 ′ and 16 ″ are arranged without a lateral member for connecting them. Is particularly advantageous. In this case, the separating members 16 ′, 16 ″ may be arranged in the vicinity of the guide device or in the vicinity of the cutting edge in the sheet.

  For this purpose, the separating members 16 ′, 16 ″ can advantageously be arranged so as to be movable transversely to the sheet transport direction R. For this purpose, the corresponding drive of the separating members 16 ′, 16 ″ can be attached to the sheet brake 13 so as to be disengageable and adjustable.

  The separating members 16, 16 ′, 16 ″ may further be arranged horizontally or parallel to the sheet transport direction R. Depending on the type of printing material, an arrangement which is inclined in the sheet running direction R is particularly advantageous for rigid printing materials (see FIGS. 4a and 4b). In this case, one adjustability may be considered such that the tilt angle of the separating member 16, 16 ', 16' 'can be changed-either in a stationary state or during operation. The ropes 19, 19 ', 19 "follow such a form of arrangement without further auxiliary means as follows.

  In an embodiment of the invention, one device associated with the separating device can be provided which delays the tensioning of the ropes 19, 19 ′, 19 ″ in the lateral region of the sheet stack 7. For this purpose, a restraining device for the ropes 19, 19 ′, 19 ″ may be arranged, for example, in the central region between the separating members 16, 16 ′, 16 ″ and the side stacking edges. While the restraining device holds the separating member 16, 16 ', 16' 'first in the region from its positioning part to the outer stacking edge of the stacking region, the central part of the ropes 19, 19', 19 '' The separation member 16, 16 ', 16' 'is entrained to capture the central area of the falling sheet B from below. Thereby, the strongly warped sheet B cannot hit the ropes 19, 19 ′, 19 ″. The restraining device is then released to spread the sheet B, so that the ropes 19, 19 ', 19 "can be freely tensioned and the sheet can be completely captured from below.

  The driving of the separating members 16, 16 ′, 16 can be performed mechanically, electrically, or hydraulically in addition to the pneumatic cylinder 17. The ropes 19, 19 ', 19' 'or the transverse members are the same as the separating members 16, 16', 16, and during normal continuous printing, the sheets to be temporarily placed have no problem and the sheets are accurately edged. It is located outside the paper stack area so that it can be temporarily placed on the paper stack 7.

  FIG. 3 schematically shows the separating device 15 as viewed from the sheet stack 7. The separating device 15 is disposed below the sheet brake 13 together with the rope 19. In this case, the rope 19 is stretched in front of the paper stack stopper 14 under the load of the spring 20.

  In order to control the movement of the separating member 16, photodetectors 21 and 22 (such as a light barrier) are provided. The detection beam 23 of the photodetectors 21 and 22 is directed to the area of the rear edge of the falling sheet B. When the sheet B is detected to travel through the separation area, the separation member 16 is locked. As a result, the sheet B directly existing in the work area of the separation device 15 and the unstable sheet B that strongly falls inward or outward and is detected are detected. Therefore, it can be avoided that the separating member 16 directly collides with the sheet B and that the rope 19 collides indirectly with the edge region of the sheet that is warped and dropped.

  For this purpose, the detection beam 23 of the photodetectors 21, 22 is preferably arranged at the height of the separating members 16, 16 ′, 16. This achieves that the separating members 16, 16 ', 16 can be driven into the stacking area as early as possible, i.e. when the sheet gap just starts. Thereby, driving reliability is remarkably improved.

  In one alternative embodiment, the detection beams 23 of the photodetectors 21 and 22 may be arranged substantially below the height of the separating members 16, 16 ′, 16. This is advantageous when the separating members 16, 16 ′, 16 are arranged to be inclined in the sheet transport direction R. This further achieves that the separating members 16, 16 ', 16 can be run into the sheet stack as early as possible. This is because the separating members 16, 16 ', 16 are directed to a somewhat deeper entry point into the stacking space.

  In order to increase the reliability, the second photodetectors 24 and 25 having the detection beam 26 may be arranged at the height of the sheet brake 13. If a printing material that tends to warp strongly is processed, it can be detected in a separate inquiry stage (Abfragestufe) whether the area above the separating device 15 is also free.

  Thereby, it is also possible to detect a state in which the sheet B is dropped at various speeds. In other words, the first sheet B repeatedly drops more slowly than the subsequent second sheet B, and the gap between these sheets becomes too small. Can happen. Thus, the separating members 16, 16 ', 16 are released for entry into the stacking area only after a sufficiently large gap is identified in the falling sheet flow.

  The original auxiliary stacking support 5 starts to run only after the sheet B further falling below the separating device 15 arrives at the area below the auxiliary stacking support 5. . For this purpose, for example, a sheet that waits for a certain amount of time or falls is detected by a sensor below the separating device 15 as described.

  The start-up control of the separating members 16, 16 ', 16 can be performed accidentally, can be performed with time or angle control, or can be performed with control by a sensor. In the case of start-up control by sensors, one or more sensors detect the falling sheets or detect the gap between the falling sheets, so that the separating device 15 is between two sheets. It is possible to enter the gap as expected. The sensor may be formed, for example, by ultrasound, by optical means, by capacitive measurement, or by sensors of other properties.

  Below, the function of the said sheet support apparatus is demonstrated based on drawing 4a-4d.

  In FIG. 4a, the sheet stack 7 is located on the stacking pallet 12 in the stack support plate 8 and has almost reached its maximum height. The separation device 15 is prepared in a standby position outside the sheet that falls in such a manner that it is supported and released by the conveyance system in the sheet conveyance direction R.

  In FIG. 4b, the sheet stack 7 is lowered with the stack support plate 6 for replacement. The auxiliary stack support 5 is prepared for entry into the stack area. The separating device 15 may be a stack of sheets above the sheet stack 7 below the sheet B falling so as to arrive in the sheet transport direction R in the detected sheet gap. Run into the area.

  In FIG. 4c, the separating device 15 holds the trailing edge of the sheet B falling so as to continue to arrive high. The auxiliary stack support 5 is advanced into the stack area in the sheet transport direction R above the stack of sheets. The sheet stack 7 can be lowered onto the stack support plate 8 and taken out from the sheet discharge device 1.

  In FIG. 4d, the separating device 15 is pulled back in the direction opposite to the sheet transport direction R from the stacking area. The sheet B that arrives during this time and is placed on the separating device 15 is temporarily placed on the auxiliary stack support 5 and forms the auxiliary stack 6 at this location. When the empty stacking pallet 12 is raised by the stack support plate 8, a new sheet stack 7 can be formed. For this purpose, the auxiliary stacking support 5 is pulled back from the stacking area in the direction opposite to the sheet transport direction R again.

  FIG. 5 shows a variant embodiment relating to the arrangement of the separating device 15 in the area of the rear edge H of the sheet stack 7. The separating device 15 consists in principle of one or more separating members 16, 16 ′ arranged above the auxiliary stack support 5. In the non-working state (initial position), the position of the separating device 15 must be located outside the standard sheet size preset by the sheet stack 7, that is, the sheet stacking The paper 7 must be positioned substantially in parallel before the rear edge H of the paper 7.

  The ends of the separating members 16, 16 'may be tapered and rounded. Furthermore, the edges of the separating members 16, 16 ', which are preferably oriented in the direction of movement during entry into the stacking area, may be rounded, chamfered or beveled. This can ensure that: That is, it is possible that the separating members 16 and 16 'may come into contact with the rear edge of the sheet during the run-in movement. In this case, the separating member reliably guides the rear edge and the sheet It can be ensured that it is captured reliably and without trouble from below.

  FIG. 5 is a plan view equivalent to FIG. 2 and shows a region connected to the sheet brake 13. Here, the position of the rear stack stopper 14 is only shown schematically. Two pneumatic cylinders 17 symmetrically with respect to the sheet stack 7 when viewed laterally with respect to the sheet transport direction R at the connection with the sheet brake 13 or with the sheet brake 13. , 17 'and these pneumatic cylinders each have one working piston 18, 18'. The separating members 16 and 16 'are disposed so as to be horizontally pivotable about the axes A and A'. Accordingly, the operating pistons 18 and 18 'are hinged to the separating members 16 and 16', respectively, and the pneumatic cylinders 17 and 17 'are disposed so as to be pivotable within a limited range.

  The separating member 16, 16 'may be coupled to a mechanical lateral member or members that couple the separating member, the length of the lateral member being variable. For this purpose, different members can be used, such as elastic strings, spring-loaded wire ropes, telescopic rods and the like.

  Further, FIG. 5 shows thin ropes 19 and 19 ′ guided at the distal ends of the separating members 16 and 16 ′. The initial position is indicated by a broken line. Each rope 19, 19 ′ is firmly connected to the front end of the corresponding separating member 16, 16 ′. The other end of each rope 19, 19 ′ is moored to a gantry stationary. Each location is provided with a spring 20 or a winding or feeding mechanism. When the separating member 16 is moved, the ropes 19, 19 'are held under tension by a spring or a winding or unwinding mechanism.

  In the region of the holding portion of the sheet brake 13 and the rear sheet stopper 14, a notch opened toward the sheet stack 7 may be provided in order to accommodate without trouble. The member of the separating device 15 is drawn into the notch in a non-working state.

  In response to the control signal, the separating members 16, 16 'are swung into the stacking space by the pneumatic cylinders 17, 17' until they exceed the standard size edge of the sheet stack 7, and at the same time the ropes 19, 19 ' At least an end portion of the sheet B that is stretched against the force of the springs 20 and 20 ′ and introduced in the transport direction R is positioned thereon. The separating members 16, 16 'together with the ropes 19, 19' form a mounting area defined in a triangular shape. The placed sheet B is supported by separating members 16 and 16 'and stretched ropes 19 and 19'. Thereby, even if it is a bending soft printing material, it is prevented that the sheet | seat loaded in the area | region of the rear edge between the separating members 16 and 16 'loosens.

  In one alternative embodiment, a single separating member 16 may be arranged in the separating device 15. In this case, both ropes 19, 19 ′ are fixed to a separating member 16 that should be provided in the center with respect to the sheet stack 7. In addition, one rope is tensioned by the pivoting movement of the separating member 16, whereas the other rope may be relaxed. Therefore, a separate clamping device, such as a winding mechanism, must be provided at this location.

  Even in the case of a single separating member, a continuously consistent rope can be guided by the device umlaufend. In this case, the rope may be pulled by the device due to the pivoting movement of the separating member, and a length compensator for the rope, for example a tension spring wrapped around the rope's running section (Lauf), is provided. Will have to.

  When a guide device for cut sheets is provided in the sheet discharge device 1, the separating members 16 ′, 16 ″ as shown in the first example based on FIG. This arrangement is particularly advantageous. In this case, the separating members 16 ′, 16 ″ may be arranged in the vicinity of the guide device that is normally arranged in the center with respect to the sheet width or in the vicinity of the cutting edge in the sheet B.

  The separating members 16 ′, 16 ″ may advantageously be arranged so as to be movable transversely to the sheet transport direction R. For this purpose, a corresponding member can be attached to the sheet brake 13 so as to be disengageable and adjustable.

  In general, the separating members 16 and 16 ′ may be disposed so as to be pivotable horizontally or parallel to the sheet transport direction R. Depending on the type of printing material, particularly for rigid printing materials, an arrangement is advantageous in which the separating members 16, 16 'are inclined in the sheet running direction R at the position where they are swung in and out. In this case, one adjustability may be considered so that the inclination angle of the separating member 16, 16 'can be varied. The ropes 19, 19 'advantageously follow such a form of arrangement without further auxiliary means.

  The driving of the separating members 16, 16 ', 16 "can be performed mechanically, electrically or hydraulically, in addition to being performed by the pneumatic cylinder 17. The ropes 19, 19 ′, 19 ″ or the transverse members are temporarily mounted on the sheet stack 7 with the same edge as the separating members 16, 16 ′, 16, so that the sheets to be temporarily placed are not hindered. During normal continuous printing, it is located outside the stacking area so that it can be placed.

It is the schematic which shows the sheet paper discharge apparatus provided with the non-stop stacking paper exchange apparatus. It is the 1st schematic diagram showing the separation device by the present invention seen from the 1st viewpoint. It is the 2nd schematic diagram which shows the separation apparatus by this invention seen from another viewpoint. FIG. 4a is a diagram schematically illustrating the function of the separating device according to the invention in cooperation with an auxiliary stack support. FIG. 4b is another view schematically showing the function of the separating device according to the invention in cooperation with the auxiliary stack support. FIG. 4c is a further diagram schematically illustrating the function of the separating device according to the invention in cooperation with an auxiliary stack support. FIG. 4d is a further illustration schematically showing the function of the separating device according to the invention in cooperation with an auxiliary stack support. It is a figure which shows the change Example of the separation apparatus by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet paper discharge apparatus 2 Auxiliary stack apparatus 3 Support frame 4 Auxiliary stack lift mechanism 5 Auxiliary stack support 6 Auxiliary stack 7 Main stack 8 Stack stack support plate 9 Stack lift mechanism 10 Conveyance system 11 sheets Leaf stopper 12 Paper pallet 13 Sheet brake 14 Paper stopper 15 Separation device 16 Separation member 16 'Separation member 16''Separation member 17 Pneumatic cylinder 17' Pneumatic cylinder 18 Actuation piston 18 'Actuation piston 19 Rope 19 'Rope 19' Rope 20 Spring 20 'Spring 21 Photo detector 22 Photo detector 23 Detection beam 24 Photo detector 25 Photo detector 26 Detection beam R Sheet paper transport direction B Sheet paper H Back edge of stack A A swivel Axis

Claims (16)

A device for supporting the rear edge of at least one sheet in a sheet discharge device (1) of a sheet processing machine, during non-stop stacking of sheets (7) Is provided with an auxiliary stacking device (2) for forming the auxiliary stack (6) and arranged in front of the rear edge (H) of the sheet stack (7) outside the stacking area. Separation member is provided, which forms a gap in the flow of the sheet that is transported by the transport system (10) and released to fall on the sheet stack (7). In the form provided for
In the support device capable of adjusting the standard size, at least one separation device (15) above the auxiliary stacking device (2) is stacked on the sheet discharge device (1) substantially in the center in the sheet transport direction (R). Device for supporting the rear edge of a sheet of paper, characterized in that it is arranged to form a loading area that can run into the paper area and tapers outward from the center. .   A substantially one-dimensional separation member (16, 16) arranged centrally with respect to the rear edge (H) of the sheet stack (7) and capable of running into the stack area. ', 16' ') is provided, and the separating member defines a mounting area that tapers from the separating member (16,16', 16 '') to the lateral stacking edge. The apparatus of claim 1, wherein the apparatus is coupled to means for   There are two separating members (16, 16 ') which are arranged symmetrically at the rear edge (H) of the sheet stack (7) and can be swiveled into the stacking area. A member is coupled to each one auxiliary separating member for defining a respective loading area tapering from said separating member (16, 16 ') to a lateral stacking edge. Item 1. The apparatus according to Item 1.   4. The device according to claim 1, wherein the separating member (16, 16 ', 16 ") is coupled to a tensionable, linear and flexible support member.   A support member in the form of a rope (19, 19 ′, 19 ″) is provided, and the support member is spring-elastically pivotally attached to the gantry, and the separating member (16, 16 ′, 16 ′). The device according to claim 4, which is rigidly or movably coupled to the region of the front end of ').   A support member in the form of a telescoping member is provided, the support member being pivotally mounted on the gantry stationary and coupled to the region of the front end of the separating member (16, 16 ', 16' '); The apparatus of claim 4.   A support member in the form of an elastic rope (19, 19 ′, 19 ″) is provided, the support member being pivotally mounted on the gantry, and a separating member (16, 16 ′, 16 ″) The device of claim 4, wherein the device is rigidly or movably coupled to the region of the front end.   At least two separating members (16, 16 ′, 16 ″) spaced apart from each other and symmetrically arranged with respect to the center of the stack are disposed, and these separating members (16, 16 ′, 16 ″) are disposed. 8) A device according to any one of claims 1 to 7, wherein a support member is arranged between (1) or no support member is arranged.   9. The apparatus according to claim 8, wherein the separating member (16, 16 ', 16 ") is arranged to be adjustable transversely to the sheet transport direction (R).   The separating member (16, 16 ′, 16 ″) is arranged in parallel to the plane in the sheet transport direction (R) at the position where it is run into the stacking area, or the sheet transport The device according to claim 1, wherein the device is arranged to be inclined in a direction (R).   11. A sensor is arranged for identifying the sheet (B) released from the transport system (10) and falling at the height of the separating device (15) or below the separating device (15). The device according to any one of the above.   11. A device according to any one of the preceding claims, wherein a sensor is arranged to identify the sheet (B) released from the transport system (10) and falling above the separating device (15).   Photodetectors (21, 22; 24, 25) oriented parallel to the transport plane of the sheet (B) are provided, and the detection beam (23; 26) of the photodetector is provided. 13. A device according to claim 11 or 12, which is directed to the region of the end of the sheet (B) that is released from the transport system (10) and falls. An auxiliary stacking device (2) is provided for forming the auxiliary stack (6) during non-stop stacking of the sheet (7), and the sheet stack is located outside the stacking area. A separating member arranged in front of the rear edge of (7) is provided, and the separating member is conveyed by the conveying system (10), released, and dropped onto the sheet stack (7). To support the rear edge of at least one sheet in the sheet discharge device (1) of the sheet processing machine in the form provided to form a gap in the flow of the sheet In the method of
By means of a standard size adjustable support device, at least one separating device (15) above the auxiliary stacking device (2) is substantially at the center in the sheet transport direction (R) of the sheet discharge device (1). A step of allowing the separation device (15) to enter the stacking region, and a step of forming a placing region that tapers outward from the center when the separation device (15) enters the stacking region. A method for supporting a rear edge of a sheet of paper.   The sensor detects the gap in the flow of the falling sheet (B), and the sheet following the sheet (B) that should hold the separation member (16, 16 ', 16' ') high. 15. The method according to claim 14, wherein after the leaf paper (B) has left the sensor area, it runs into the stack area under the definition of the loading area tapering outward.   After the sheet (B) that should not be held high leaves by the sensor, it is confirmed above the separating device (15) that there is no subsequent sheet, and then the separation member (16) , 16 ′, 16 ″) in the stacking area under the definition of the mounting area tapering outwards.

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