EP2441714A1 - Lifting sucker for a sheet processing machine, sheet processing machine - Google Patents

Lifting sucker for a sheet processing machine, sheet processing machine Download PDF

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Publication number
EP2441714A1
EP2441714A1 EP10013684A EP10013684A EP2441714A1 EP 2441714 A1 EP2441714 A1 EP 2441714A1 EP 10013684 A EP10013684 A EP 10013684A EP 10013684 A EP10013684 A EP 10013684A EP 2441714 A1 EP2441714 A1 EP 2441714A1
Authority
EP
European Patent Office
Prior art keywords
compressed air
spring element
lifting
vacuum generator
hoover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10013684A
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German (de)
French (fr)
Other versions
EP2441714B1 (en
Inventor
Rainer Dipl. Ing Buschulte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Protion GmbH
Original Assignee
Protion GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Protion GmbH filed Critical Protion GmbH
Priority to EP10013684.5A priority Critical patent/EP2441714B1/en
Publication of EP2441714A1 publication Critical patent/EP2441714A1/en
Application granted granted Critical
Publication of EP2441714B1 publication Critical patent/EP2441714B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0883—Construction of suction grippers or their holding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/34—Suction grippers
    • B65H2406/342—Suction grippers being reciprocated in a rectilinear path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/36—Means for producing, distributing or controlling suction
    • B65H2406/366—Means for producing, distributing or controlling suction producing vacuum
    • B65H2406/3661—Injectors

Definitions

  • the invention relates to a lifting suction for a sheet processing machine, comprising a housing having a compressed air connection for a device providing compressed air, and having a sleeve-shaped vacuum generator having an axial inlet, an axial outlet and at least one radial suction opening, wherein the compressed air connection with the Inlet is connected so that the compressed air connection supplied compressed air flows axially through the vacuum generator, wherein the suction opening is operatively connected to a suction surface for a sheet to be processed forming spring element.
  • the invention relates to a sheet-processing machine, in particular for separating paper sheets, with at least one compressed air providing device and with at least one lifting sucker, which has a compressed air supply device providing the compressed air connection, as well as an axially flowed through by the compressed air vacuum generator, the at least one radial Includes suction, which is operatively connected to a suction surface for a sheet to be processed forming spring element of Hubsaugers.
  • Lifting suction sheet-processing machines essentially serve to solve the top sheet of a sheet pile from the stack and / or to transport.
  • a lifting sucker can hereby be designed either as a separating vacuum cleaner which performs at least substantially only an axial movement perpendicular to a sheet stack, or as a transport suction device which, in addition to an axial movement for detecting the lifted sheet, also performs a lateral movement for transporting the sheet.
  • the lifting suckers or at least their respective suction surface must be adjustable at least in height.
  • the tasks are distributed such that a first group of lifting sucks serves to lift the sheet from the stack, while a second group of lifting sucks takes and carries the lifted sheet.
  • a first group of lifting sucks serves to lift the sheet from the stack
  • a second group of lifting sucks takes and carries the lifted sheet.
  • the suction surface is usually formed by a jumping element, which is acted upon by the negative pressure and has its name therefore, that it automatically jumps up in contact with the sheet to be lifted and thereby lifts the sheet.
  • the jumping element is arranged displaceable relative to the housing of the lifting sucker.
  • the lifting suction device has a compressed air connection, by means of which compressed air can be supplied to an axial inlet of a sleeve-shaped vacuum generator, the compressed air flowing axially through the vacuum generator, thereby passing at least one radial suction openings, through which the air surrounding the vacuum generator is sucked and thus a negative pressure is generated outside of the vacuum generator, wherein the radial suction opening is operatively connected to the spring element, so that it is acted upon by the negative pressure.
  • a corresponding Hubsauger is for example from the German patent DE 199 01 341 B4 known.
  • the invention is therefore an object of the invention to provide a lifting sucker and a sheet-processing machine that allows in a simple way feeding the Hubsaugers and in particular of the spring element to the sheet to be lifted or lifted.
  • a lifting sucker which is characterized by the features of claim 1
  • a sheet-processing machine which is characterized by the features of claim 14.
  • the compressed air connection is also operatively connected to a particular annular overpressure chamber, which is formed by the housing and an axially displaceably mounted reciprocating piston so that the lifting elements carrying the reciprocating piston is axially displaceable by pressurizing the pressure chamber with compressed air relative to the housing.
  • the compressed air connection is operatively connected both to the vacuum generator and to the overpressure chamber.
  • the overpressure chamber is formed by the housing of the Hubsaugers and axially displaceably mounted therein reciprocating piston such that the latter is displaced by the compressed air in a desired direction or is displaced.
  • the reciprocating piston carries the already known spring element, so that by displacing the reciprocating the spring element and thus the arch cross-suction surface is displaced in a desired direction. While the housing of the Hubsaugers can thus be arranged stationary, the spring element can be brought closer to the bow by axial displacement of the reciprocating piston. As a result, a complex mechanism for axial displacement, so at least substantially perpendicular to the sheet to be detected, the entire Hubsaugers made in a simple manner superfluous or at least simplified.
  • the overpressure chamber is connected upstream of the inlet of the vacuum generator.
  • the overpressure chamber is arranged between the inlet of the vacuum generator and the compressed air connection, so that the compressed air supplied to the compressed air connection first flows through the vacuum chamber, and only then the vacuum generator.
  • the supplied compressed air is thus used twice: once for generating the negative pressure for actuating the spring element and for sucking the sheet and once for displacing the reciprocating piston.
  • the overpressure chamber and the vacuum generator are viewed parallel to one another, so that the compressed air flow coming from the compressed air connection is first divided into two partial compressed air streams and then the respective compressed air partial flow is supplied to the overpressure or the vacuum generator.
  • the vacuum generator is arranged integrated in the reciprocating piston.
  • the vacuum generator is thus moved with the reciprocating piston. Due to the integrated arrangement of the vacuum generator in the reciprocating piston, the vacuum generator, in particular the at least one suction opening of the vacuum generator in a simple manner by corresponding, leading through the reciprocating channels with the spring element or the suction surface of the spring element connect.
  • the spring element is preferably cylindrical in shape and has at least one suction channel extending from the piston end to the suction surface end.
  • the suction channel of the spring element is expediently connected to at least one channel leading through the piston with the suction opening of the vacuum generator.
  • the reciprocating piston on an axial recording, which is connected via a channel, in particular radial channel with the pressure chamber, wherein in the recording of the vacuum generator is located.
  • the receptacle extends coaxially or axially through the reciprocating piston, at least over a certain length, and is connected to the overpressure chamber, in particular through the radial passage.
  • the radial channel is preferably formed by a tap hole.
  • the vacuum generator is at least partially or partially positively and optionally held non-positively in the reciprocating piston.
  • an annular space is formed in sections between the receptacle and the vacuum generator, which has at least one connecting channel with the spring element or with the Suction channel of the spring element is operatively connected.
  • the at least one, preferably a plurality of suction openings of the vacuum generator open into the annular space, so that the negative pressure acting on the suction surface is generated in the annular space.
  • the vacuum generator has a reduced outer diameter and / or the reciprocating piston has an enlarged inner diameter.
  • the connecting channel of the reciprocating piston opens in a vacuum chamber, which is formed by one end of the reciprocating piston and therein axially displaceable spring element arranged.
  • a negative pressure is generated by the vacuum generator which acts through the connection channel into the vacuum chamber, so that, in particular if the spring element has detected an arc with the suction surface, the negative pressure in the vacuum chamber causes the negative pressure Spring element is pulled into the reciprocating piston.
  • the spring element preferably falls back into its outsourced starting position due to its own weight, alternatively with the aid of a spring element.
  • the reciprocating piston preferably has a radial projection which extends at least substantially over the circumference and which is assigned to the overpressure chamber.
  • the radial projection forms at least one shoulder or a piston surface of the lifting piston, which lies in the overpressure chamber.
  • the radial projection is preferably designed or arranged such that it is located axially between the opening into the pressure chamber compressed air connection and the radial channel of the reciprocating piston.
  • the compressed air connection is essentially one associated with the axial end of the pressure chamber, while the radial channel is associated with the other axial end.
  • the radial projection is preferably close to the radial passage between the radial passage and the compressed air port.
  • the radial channel and the compressed air connection are arranged on the same side of the radial projection, preferably on the side of the radial projection which is opposite to the spring element.
  • the radial projection can also serve to guide the reciprocating piston in the housing of the Hubsaugers.
  • the radial projection and / or the pressure chamber are formed such that the compressed air coming from the compressed air connection past the radial projection passes, in particular in the radial channel of the reciprocating piston, provided that it is arranged on the spring element facing side of the radial projection.
  • the outer diameter of the radial projection and / or the inner diameter of the pressure chamber is selected such that a clearance between the radial projection and the inside of the pressure chamber.
  • the radial projection on the side facing away from the jumping element a larger Axial surface than on the spring element facing side.
  • the outer diameter of the reciprocating piston with respect to the radial projection on the side facing away from the spring element is selected to be smaller than on the spring element facing side.
  • a first compression spring is arranged axially acting.
  • the compression spring is braced, at the latest when the reciprocating piston is displaced in the direction of the spring element by the applied pressure. If the compressed air supply is interrupted or up to a certain limit reduces, so ensures the first compression spring that the reciprocating piston is moved back to its original position.
  • a second compression spring is arranged axially acting between the spring element and the reciprocating piston.
  • the second compression spring counteracts the negative pressure, so that when the compressed air supply is interrupted, the compression spring forces the spring element back into its starting position.
  • the vacuum generator has at least one flow cross-sectional taper.
  • the vacuum generator is designed as a single-stage or multi-stage Venturi nozzle, whereby a particularly high negative pressure can be generated at one or more suction openings.
  • the lifting sucker means for displacing the reciprocating piston against the pressure generated in the pressure chamber.
  • the lifting sucker thus has means which allow the piston to be raised or displaced in the opposite direction to the spring element if an overpressure is set by the supplied compressed air in the overpressure chamber. This makes it possible, while maintaining the compressed air flow and the resulting, acting on the spring element negative pressure to lift the reciprocating piston, so that a sucked bow safely remains on the suction surface and can be further raised by moving the reciprocating piston.
  • the compressed air connection is associated with an actuatable valve for adjusting a compressed air flow.
  • the compressed air connection to the valve.
  • the integrated in the manner in the Hubsauger valve is preferably electrically actuated. Overall, therefore, a compact Hubsauger unit is offered, which only needs to be connected to the device providing the compressed air and a corresponding control unit. The necessary for lifting a sheet axial movements of the lifting sucker takes over completely, without an external displacement device must be provided.
  • the sheet-processing machine is characterized by the design of the Hubsaugers as described above.
  • the lifting sucker of the sheet-processing machine is designed as a separating or lifting device for sheets to be processed, in particular paper sheets.
  • a lateral transport of the sheet preferably take one or more laterally displaceable Transportiersauger.
  • an actuatable valve is interposed between the compressed air connection and the device providing the compressed air. If several corresponding lifting suckers are provided, then the valve is expediently interposed between the device and a compressed air branch which supplies the compressed air to the respective lifting suckers, so that several lifting suckers can be actuated or actuated simultaneously by actuating the one electric valve.
  • each Hubsauger has its own, integrated valve arranged.
  • FIG. 1 shows in a side view of a lifting sucker 1 of a not shown here, sheet-processing machine 2, which is designed for example as Paper.
  • the lifting vacuum cleaner 1 comprises a housing 3 which can be connected to a carrier element of the machine 2 by, for example, screwing or clamping. Through the housing 3, a reciprocating piston 4, which is axially displaceably mounted in the housing 3 extends.
  • the housing 3 has a compressed air connection 5 for a device providing compressed air, which is arranged radially or aligned.
  • the reciprocating piston 4 has at one end an outlet 6, which opens into the environment or outside air, and carries at its end opposite the outlet 6 a spring element 7, which forms an end suction surface 8
  • the spring element 7 is mounted axially displaceable in the reciprocating 4 ,
  • the suction surface 8 of the spring element 7 is in operative connection with a suction generator arranged in the vacuum cleaner 1, which is for generating a negative pressure of compressed air, which is supplied to the compressed air connection 5, can be flowed through.
  • FIG. 2 shows a longitudinal sectional view through the Hubsauger 1 of FIG. 1 ,
  • the housing 3 is formed in two parts and has a cup-shaped lower part 9 and a lid-like upper part 10, which form an annular overpressure chamber 11 in the assembled, illustrated state together with the reciprocating piston 4, in which the compressed air port 5 and the opening thereof opens.
  • the upper part 10 and the lower part 9 have mutually aligned guide openings 12, 13, in which the lifting piston 4 is slidably mounted.
  • bearing elements 14, 15 are used, which serve for low-friction sliding bearing of the reciprocating piston 4 and for sealing the pressure chamber 11.
  • the reciprocating piston 4 is also formed in two parts and has an outlet-side part 16 and a sphrigelement disorderen part 17.
  • the part 17 facing the end of the part 16 has an external thread, while the part 16 facing the end of the part 17 has an internal thread, so that the two parts 16 and 17 are screwed together.
  • the screw 18 formed by the internal thread and the external thread is preferably arranged such that it is always or in any position of the reciprocating piston 4 at least substantially outside of the housing 3, so that the reciprocating piston 4 is always supported by the part 17 in the housing 3.
  • the parts 16 and 17 together form a receptacle 19 which extends axially over a portion of the reciprocating piston 4.
  • a vacuum generator 20 is held coaxially.
  • the vacuum generator 20 is sleeve-shaped and has an axial inlet 21, an axial outlet 22 and a plurality of radially formed in the shell wall suction opening 23, of which only a few are provided with reference numerals.
  • At its outlet 22 having the end of the vacuum generator 20 is held radially positive fit in the part 18 of the reciprocating piston 4.
  • the outlet 22 passes into the outlet 6 of the reciprocating piston 4.
  • the vacuum generator 20 is constructed in the manner of a Venturi nozzle and has at least one fürschströmungsqueritessrejüngung on, in particular in the region of one of the radial suction ports 23. With its inlet 21 having / forming end of the vacuum generator 20 penetrates partially into an axial passage 24 of the reciprocating piston 4 a , During assembly, the vacuum generator 20 is first inserted into the part 17 to the stop, and then the part 16 is screwed onto the part 17 until the vacuum generator 20 is clamped axially between the parts 16 and 17 and thus held.
  • the receptacle 19 and the vacuum generator 20 are designed such that they form in the assembled state between them an annular space 25 which extends over a substantial axial portion of the vacuum generator 20.
  • the receptacle 19 preferably has an enlarged inner diameter in said section.
  • the part 17 of the reciprocating piston 4 further comprises a radial passage 27 which is preferably formed as a tap hole and opens into the axial channel 24 of the receptacle 19, so that the inlet 21 of the Vacuum generator 20 via the axial channel 24 and the radial channel 27 with the pressure chamber 11 is in communication.
  • a radial passage 27 which is preferably formed as a tap hole and opens into the axial channel 24 of the receptacle 19, so that the inlet 21 of the Vacuum generator 20 via the axial channel 24 and the radial channel 27 with the pressure chamber 11 is in communication.
  • the reciprocating piston 4 further has a radial projection 28 which extends substantially over the entire circumference of the reciprocating piston 4 and a first, the compressed air port 5 facing axial surface 29 and a second, the radial channel 27 associated axial surface 30 forms, the axial surfaces 29 and 30th are aligned parallel to each other and have different sizes.
  • the part 17 of the reciprocating piston 4 on the radial channel 27 having side has a larger diameter than on the compressed air connection 5 associated side.
  • the axial surface 30 is smaller than the axial surface 29 is formed.
  • the compressed air which can be guided through the compressed air connection 5 into the overpressure chamber 11 reaches both the region of the overpressure chamber 11 which is formed between the axial surface 29 and the upper part 10 and into the region which extends from the axial surface 30 and the bottom of the cup-shaped lower part 9 is limited.
  • the outer diameter of the radial projection 28 is suitably chosen such that there is a clearance between the radial projection 28 and the inside of the housing 3 and the lower part 9, through which the compressed air can propagate in the entire pressure chamber 11.
  • the spring element 7 carrying end of the reciprocating piston 4 and the part 17 has an open-edged pot-shaped recess 31, in which the spring element 7 is held with its hubkolben substantiveen end 32 axially displaceable.
  • the movement path of the spring element 32 is preferably by two retaining rings, For example, limited to O-rings 33.
  • the spring element 7 is sleeve-shaped and has a suction channel 34 extending from the piston end to the suction surface 8.
  • the structure of jumping elements is known in principle, so it will not be discussed further here.
  • the end 32 and the recess 31 together form a vacuum chamber 35, into which the connecting channel 26 opens, so that the annular space 25 is above the connecting channel 26 with the vacuum chamber 35 and the spring element 7 in conjunction.
  • the function of the advantageous Hubsaugers 1 will now be explained in more detail.
  • the Hubsauger 1 By the compressed air connection 5 the lifting sucker 1 compressed air, so air or other gas having an overpressure, the Hubsauger 1 is supplied.
  • the compressed air passes into the overpressure chamber 11, whereby the pressure in the overpressure chamber 11 is increased.
  • Due to the area ratio of the axial surfaces 29 and 30, the pressure generated in the overpressure chamber 11 causes the reciprocating piston 4 initially in the direction of the spring element 7, as indicated by an arrow 36, is displaced.
  • the spring element 7 is guided to a sheet to be processed (not shown here), without the housing 3 or the entire lifting sucker 1 having to be moved.
  • the compressed air flows through the radial channel 27 and the axial channel 24 into the inlet 21 of the vacuum generator 20 and flows through it axially.
  • air is sucked out of the annular space 25 via the suction openings 23, so that a negative pressure is generated which has an effect up to the vacuum chamber 35 via the connecting channel 26.
  • the suction channel 34 is closed is, whereby the negative pressure in the vacuum chamber 35 increases, which has the consequence that the jumping element 7 is drawn into the vacuum chamber 35, as indicated by an arrow 37.
  • the sheet is automatically raised as soon as the axially downwardly moving reciprocating piston 4 strikes the spring element 7 on the sheet.
  • a first compression spring is provided between the axial surface 30 and the bottom of the lower part 9, which counteracts the direction of the arrow 36 or is clamped, so that the first compression spring displaces the reciprocating piston 4 back to its starting position at interrupting the compressed air supply.
  • a second compression spring between the spring element 7 and the bottom of the recess 31 may be provided which urges the spring element 7 against the suction direction to the outside in its initial position. If the compressed air supply is interrupted or reduced, the reciprocating piston 4 and the spring element 7 are automatically shifted back to their respective output position.
  • the first and / or the second compression spring are designed such that when the compressed air supply is reduced, first the first compression spring and only with further reduced compressed air supply passes the second compression spring in its at least substantially relaxed rest position.
  • the first compression spring is designed such that it displaces the reciprocating piston 4 in its initial position falls below a first limit value of the compressed air supply, and the second compression spring such that it falls below a second limit, which is below the first limit, the spring element. 7 moved back to its original position.
  • FIGS. 3A to 3D Based on FIGS. 3A to 3D will now be explained the course of a lifting operation by means of Hubsaugers 1, wherein the figure Ren 3A to 3D show the Hubsauger 1 in different operating positions during the lifting process.
  • the lifting sucker 1 is shown in each case in a longitudinal sectional view, for which, however, a different section was selected by the Hubsauger 1, so that the compressed air connection 5 and the Radalkanal 27 are not visible.
  • FIG. 3A shows the Hubsauger 1 in its initial position in which the reciprocating piston 4 is in a retracted end position. This is achieved in particular by the first compression spring described above.
  • the spring element 7 is in its outsourced or extended end position, which is achieved for example by the weight of the spring element 7 or by the optionally provided second compression spring.
  • the suction surface 8 is thus located on a neutral output level.
  • the structure of the sheet-processing machine 2 is selected such that the travel in the direction of arrow 36 is greater than the distance between the suction surface 8 and the sheet to be processed in the retracted, in FIG. 3A illustrated state, so that when the lifting piston 4 in its extended end position, as in FIG.
  • the spring element 7 rests on the sheet to be processed and possibly pushed a piece into the recess 31 is.
  • the leading through the spring element 7 channel is closed.
  • a negative pressure in the vacuum chamber 35 is generated by the compressed air flowing through the vacuum generator 20. This negative pressure ensures that the sheet to be processed is held on the suction surface 8.
  • the negative pressure in the vacuum chamber 35 increases in such a way that the spring element 7 is pulled into the recess 31 in the direction of the arrow 37 until it reaches a retracted end position, as in FIG FIG. 3C shown achieved.
  • the bow is pulled in the direction of the spring element 7 and thus in particular lifted or removed from underlying arches. In this way, a particularly secure sheet separation takes place.
  • the first compression spring displaces the reciprocating piston 4 back to its retracted position, as in Figure 3D shown. If the compressed air flow is not completely interrupted, the sheet will continue to hang due to the negative pressure effect on the suction surface 8 of the spring element 7. Once the suction surface 8 and thus the detected sheet has reached a desired height or level, and optionally a transport suction has detected the scattered sheet, the compressed air supply is completely interrupted, so that the sheet is released and the jumping element 7 in its outsourced end position, as in FIG. 3A shown, falls back or pushed by the second compression spring.
  • the compressed air connection 5 is associated with an actuatable valve, by means of which the compressed air flow is adjustable.
  • the lifting sucker 1 forms a particularly compact structural unit.
  • the valve is particularly preferably arranged in the compressed air connection 5.
  • the sleeve-shaped vacuum generator 20 is formed as a multi-stage venturi, wherein it seen in the direction of flow enlarging cross-sections or diameters, which in each case at least one suction port 23 and preferably also each a fürströmungsqueritessverjünung is assigned to the suction increase.
  • the reciprocating piston 4 has means 38 which allow a displacement of the reciprocating piston against the pressure generated in the pressure chamber 11.
  • the means 38 are formed by a further radial projection 39 which is arranged on the reciprocating piston 4 close to the outlet 6 or on the spring element 7 opposite the end of the reciprocating piston 4. At the further radial projection 39 can act on an actuator that moves the reciprocating piston 4 in the direction of arrow 37, even if the maximum compressed air flow through the compressed air port 5 flows into the overpressure chamber 11.
  • the actuator system is formed as part of the Hubsaugers 1.
  • the actuators may comprise, for example, a pneumatic, electric or electromagnetic actuator which acts on the reciprocating piston 4 at the further radial projection 39 with a force against the pressure force generated in the overpressure chamber 11.
  • the atkorik is designed for displacing the reciprocating piston 4 against the pressure generated in the pressure chamber 11 as part of the sheet-processing machine and the lifting sucker 1 or more appropriately designed Hubsaugem 1 assigned.
  • the advantageous Hubsauger 1 and the lifting sucker 1 having machine 2 allows a quick and safe separation of sheets, especially paper sheets, the axial process is carried out solely by the reciprocating 4 and the spring element 4, without the entire Hubsauger 1 are axially displaced would have to raise a detected sheet or to supply the suction surface 8 to the sheet.

Abstract

The stroke auger (1) has housing (3) having sleeve-shaped vacuum generator (20) with axial inlet (21), axial outlet (22) and radial suction port (23). The compressed air connection (5) is operatively connected with inlet, so that compressed air supplied to vacuum generator axially flowed through inlet. The suction port is connected with suction surface (8) for to-be-processed sheets. The upper pressure chamber (11) is connected to housing, such that spring element (7) carrying lifting piston (4) by impingement of chamber with compressed air relative to housing is axially displaced. An independent claim is included for arc-processing machine.

Description

Die Erfindung betrifft einen Hubsauger für eine bogenverarbeitende Maschine, mit einem Gehäuse, das einen Druckluftanschluss für eine Druckluft bereitstellende Einrichtung aufweist, und mit einem hülsenförmigen Unterdruckerzeuger, der einen axialen Einlass, einen axialen Auslass sowie mindestens eine radiale Saugöffnung aufweist, wobei der Druckluftanschluss mit dem Einlass verbunden ist, sodass dem Druckluftanschluss zugeführte Druckluft den Unterdruckerzeuger axial durchströmt, wobei die Saugöffnung mit einem eine Saugfläche für einen zu verarbeitenden Bogen bildenden Springelement wirkverbunden ist.The invention relates to a lifting suction for a sheet processing machine, comprising a housing having a compressed air connection for a device providing compressed air, and having a sleeve-shaped vacuum generator having an axial inlet, an axial outlet and at least one radial suction opening, wherein the compressed air connection with the Inlet is connected so that the compressed air connection supplied compressed air flows axially through the vacuum generator, wherein the suction opening is operatively connected to a suction surface for a sheet to be processed forming spring element.

Ferner betrifft die Erfindung eine bogenverarbeitende Maschine, insbesondere zum Vereinzeln von Papierbögen, mit wenigstens einer Druckluft bereitstellenden Einrichtung und mit mindestens einem Hubsauger, der einen mit der Druckluft bereitstellenden Einrichtung verbundenen Druckluftanschluss aufweist, sowie einen von der Druckluft axial durchströmbaren Unterdruckerzeuger, der wenigstens eine radiale Saugöffnung umfasst, die mit einem eine Saugfläche für einen zu verarbeitenden Bogen bildenden Springelement des Hubsaugers wirkverbunden ist.Furthermore, the invention relates to a sheet-processing machine, in particular for separating paper sheets, with at least one compressed air providing device and with at least one lifting sucker, which has a compressed air supply device providing the compressed air connection, as well as an axially flowed through by the compressed air vacuum generator, the at least one radial Includes suction, which is operatively connected to a suction surface for a sheet to be processed forming spring element of Hubsaugers.

Stand der TechnikState of the art

Hubsauger sowie Hubsauger aufweisende, bogenverarbeitende Maschinen sind aus dem Stand der Technik bekannt. Hubsauger bogenverarbeitender Maschinen dienen im Wesentlichen dazu, den obersten Bogen eines Bogenstapels von dem Stapel zu lösen und/oder zu transportieren. Ein Hubsauger kann hierbei entweder als ein Vereinzelungssauger ausgebildet sein, der zumindest im Wesentlichen nur eine axiale Bewegung senkrecht zu einem Bogenstapel ausführt, oder als Transportsauger, der zusätzlich zu einer axialen Bewegung zum Erfassen des abgehobenen Bogens auch eine seitliche Bewegung zum Transportieren des Bogens ausführt. Dazu müssen die Hubsauger oder zumindest deren jeweilige Saugfläche zumindest in ihrer Höhe verstellbar sein. Häufig werden die Aufgaben derart verteilt, dass eine erste Gruppe Hubsauger zum Abheben des Bogens von dem Stapel dient, während eine zweite Gruppe von Hubsaugem den abgehobenen Bogen nimmt und transportiert. Zum Abheben und/oder Halten des Bogens weisen die Hubsauger die Saugfläche auf, die einen Bogen durch Erzeugen eines Unterdrucks ansaugt und an dem Hubsauger hält. Die Saugfläche wird in der Regel von einem Springelement gebildet, das mit dem Unterdruck beaufschlagbar ist und das seinen Namen daher hat, dass es bei Kontakt mit dem anzuhebenden Bogen automatisch hochspringt und den Bogen dadurch anhebt. Dazu ist das Springelement relativ zu dem Gehäuse des Hubsaugers verlagerbar angeordnet. Der Hubsauger weist einen Druckluftanschluss auf, durch den Druckluft einem axialen Einlass eines hülsenförmigen Unterdruckerzeugers zuführbar ist, wobei die Druckluft den Unterdruckerzeuger axial durchströmt und dabei wenigstens eine radiale Saugöffnungen passiert, durch welche den Unterdruckerzeuger umgebende Luft angesaugt und somit ein Unterdruck außerhalb des Unterdruckerzeugers erzeugt wird, wobei die radiale Saugöffnung mit dem Springelement wirkverbunden ist, so dass dieses mit dem Unterdruck beaufschlagt wird. Ein entsprechender Hubsauger ist beispielsweise aus der deutschen Patentschrift DE 199 01 341 B4 bekannt.Hoover and lifting sucker, bow-processing machines are known from the prior art. Lifting suction sheet-processing machines essentially serve to solve the top sheet of a sheet pile from the stack and / or to transport. A lifting sucker can hereby be designed either as a separating vacuum cleaner which performs at least substantially only an axial movement perpendicular to a sheet stack, or as a transport suction device which, in addition to an axial movement for detecting the lifted sheet, also performs a lateral movement for transporting the sheet. For this purpose, the lifting suckers or at least their respective suction surface must be adjustable at least in height. Frequently, the tasks are distributed such that a first group of lifting sucks serves to lift the sheet from the stack, while a second group of lifting sucks takes and carries the lifted sheet. To lift and / or hold the bow, the lifting suckers on the suction surface, which sucks an arc by generating a negative pressure and holds on the Hubsauger. The suction surface is usually formed by a jumping element, which is acted upon by the negative pressure and has its name therefore, that it automatically jumps up in contact with the sheet to be lifted and thereby lifts the sheet. For this purpose, the jumping element is arranged displaceable relative to the housing of the lifting sucker. The lifting suction device has a compressed air connection, by means of which compressed air can be supplied to an axial inlet of a sleeve-shaped vacuum generator, the compressed air flowing axially through the vacuum generator, thereby passing at least one radial suction openings, through which the air surrounding the vacuum generator is sucked and thus a negative pressure is generated outside of the vacuum generator, wherein the radial suction opening is operatively connected to the spring element, so that it is acted upon by the negative pressure. A corresponding Hubsauger is for example from the German patent DE 199 01 341 B4 known.

Bekannte Hubsauger haben den Nachteil, dass zum insbesondere axialen Zuführen des Hubsaugers beziehungsweise des Springelements an den Bogen eine aufwendige Mechanik notwendig ist.Known lifting suckers have the disadvantage that, in particular axial feeding the Hubsaugers or the spring element to the bow a complex mechanism is necessary.

Aufgabe der ErfindungObject of the invention

Der Erfindung liegt somit die Aufgabe zugrunde, einen Hubsauger sowie eine bogenverarbeitende Maschine zu schaffen, die auf einfache Art und Weise ein Zuführen des Hubsaugers und insbesondere des Springelements zu dem zu greifenden beziehungsweise anzuhebenden Bogen ermöglicht.The invention is therefore an object of the invention to provide a lifting sucker and a sheet-processing machine that allows in a simple way feeding the Hubsaugers and in particular of the spring element to the sheet to be lifted or lifted.

Offenbarung der ErfindungDisclosure of the invention

Die der Erfindung zugrundeliegende Aufgabe wird durch einen Hubsauger gelöst, der sich durch die Merkmale des Anspruchs 1 auszeichnet, sowie durch eine bogenverarbeitende Maschine, die sich durch die Merkmale des Anspruchs 14 auszeichnet. Erfindungsgemäß ist der Druckluftanschluss auch mit einer insbesondere ringförmigen Überdruckkammer wirkverbunden, die von dem Gehäuse und einem axial verschiebbar gelagerten Hubkolben derart gebildet wird, dass der das Springelemente tragende Hubkolben durch Beaufschlagung der Überdruckkammer mit Druckluft relativ zu dem Gehäuse axial verlagerbar ist. Erfindungsgemäß ist also vorgesehen, dass der Druckluftanschluss sowohl mit dem Unterdruckerzeuger als auch mit der Überdruckkammer wirkverbunden ist. Die Überdruckkammer wird von dem Gehäuse des Hubsaugers und dem darin axial verschiebbar gelagerten Hubkolben derart gebildet, dass letzterer durch die Druckluftbeaufschlagung in eine gewünschte Richtung verlagerbar ist beziehungsweise verlagert wird. Der Hubkolben trägt dabei das bereits bekannte Springelement, sodass durch Verlagern des Hubkolbens das Springelement und damit die den Bogen greifende Saugfläche in eine gewünschte Richtung verlagerbar ist. Während das Gehäuse des Hubsaugers somit ortsfest angeordnet sein kann, lässt sich das Springelement durch axiales Verlagern des Hubkolbens dem Bogen näherbringen. Hierdurch wird eine aufwendige Mechanik zum axialen Verlagern, also zumindest im Wesentlichen senkrecht zu dem zu erfassenden Bogen, des gesamten Hubsaugers auf einfache Art und Weise überflüssig gemacht oder zumindest vereinfacht.The problem underlying the invention is achieved by a lifting sucker, which is characterized by the features of claim 1, and by a sheet-processing machine, which is characterized by the features of claim 14. According to the compressed air connection is also operatively connected to a particular annular overpressure chamber, which is formed by the housing and an axially displaceably mounted reciprocating piston so that the lifting elements carrying the reciprocating piston is axially displaceable by pressurizing the pressure chamber with compressed air relative to the housing. According to the invention, it is thus provided that the compressed air connection is operatively connected both to the vacuum generator and to the overpressure chamber. The overpressure chamber is formed by the housing of the Hubsaugers and axially displaceably mounted therein reciprocating piston such that the latter is displaced by the compressed air in a desired direction or is displaced. The reciprocating piston carries the already known spring element, so that by displacing the reciprocating the spring element and thus the arch cross-suction surface is displaced in a desired direction. While the housing of the Hubsaugers can thus be arranged stationary, the spring element can be brought closer to the bow by axial displacement of the reciprocating piston. As a result, a complex mechanism for axial displacement, so at least substantially perpendicular to the sheet to be detected, the entire Hubsaugers made in a simple manner superfluous or at least simplified.

Bevorzugt ist die Überdruckkammer dem Einlass des Unterdruckerzeugers vorgeschaltet. Das bedeutet, dass die Überdruckkammer zwischen dem Einlass des Unterdruckerzeugers und dem Druckluftanschluss angeordnet ist, sodass die dem Druckluftanschluss zugeführte Druckluft zunächst die Unterdruckkammer, und erst anschließend den Unterdruckerzeuger durchströmt. Die zugeführte Druckluft wird somit zweifach genutzt: Einmal zum Erzeugen des Unterdrucks zum Betätigen des Springelements und zum Ansaugen des Bogens und einmal zum Verlagern des Hubkolbens. Gemäß einer alternativen Ausführungsform ist vorzugsweise vorgesehen, dass die Überdruckkammer und der Unterdruckerzeuger parallel zueinander geschaut sind, sodass der von dem Druckluftanschluss kommende Druckluftstrom zunächst in zwei Druckluftteilströme aufgeteilt und dann der jeweilige Druckluftteilstrom dem Überdruck- beziehungsweise dem Unterdruckerzeuger zugeführt wird.Preferably, the overpressure chamber is connected upstream of the inlet of the vacuum generator. This means that the overpressure chamber is arranged between the inlet of the vacuum generator and the compressed air connection, so that the compressed air supplied to the compressed air connection first flows through the vacuum chamber, and only then the vacuum generator. The supplied compressed air is thus used twice: once for generating the negative pressure for actuating the spring element and for sucking the sheet and once for displacing the reciprocating piston. According to an alternative embodiment, it is preferably provided that the overpressure chamber and the vacuum generator are viewed parallel to one another, so that the compressed air flow coming from the compressed air connection is first divided into two partial compressed air streams and then the respective compressed air partial flow is supplied to the overpressure or the vacuum generator.

Gemäß einer vorteilhaften Weiterbildung der Erfindung ist vorgesehen, dass der Unterdruckerzeuger in den Hubkolben integriert angeordnet ist. Der Unterdruckerzeuger wird somit mit dem Hubkolben mitbewegt. Durch die integrierte Anordnung des Unterdruckerzeugers in dem Hubkolben lässt sich der Unterdruckerzeuger, insbesondere die mindestens eine Saugöffnung des Unterdruckerzeugers auf einfache Art und Weise durch entsprechende, durch den Hubkolben führende Kanäle mit dem Springelement beziehungsweise der Saugfläche des Springelements verbinden. Das Springelement ist vorzugsweise zylinderförmig ausgebildet und weist mindestens einen sich von dem hubkolbenseitigen Ende bis zu dem saugflächenseitigen Ende erstreckenden Saugkanal auf. Der Saugkanal des Springelements ist zweckmäßigerweise mit mindestens einem durch den Hubkolben führenden Kanal mit der Saugöffnung des Unterdruckerzeugers verbunden.According to an advantageous embodiment of the invention it is provided that the vacuum generator is arranged integrated in the reciprocating piston. The vacuum generator is thus moved with the reciprocating piston. Due to the integrated arrangement of the vacuum generator in the reciprocating piston, the vacuum generator, in particular the at least one suction opening of the vacuum generator in a simple manner by corresponding, leading through the reciprocating channels with the spring element or the suction surface of the spring element connect. The spring element is preferably cylindrical in shape and has at least one suction channel extending from the piston end to the suction surface end. The suction channel of the spring element is expediently connected to at least one channel leading through the piston with the suction opening of the vacuum generator.

Vorzugsweise weist der Hubkolben eine axiale Aufnahme auf, die über einen Kanal, insbesondere Radialkanal mit der Überdruckkammer verbunden ist, wobei in der Aufnahme der Unterdruckerzeuger liegt. Die Aufnahme erstreckt sich koaxial beziehungsweise axial durch den Hubkolben, zumindest über eine gewisse Länge hinweg, und ist mit der Überdruckkammer insbesondere durch den Radialkanal verbunden. Der Radialkanal wird vorzugsweise durch eine Stichbohrung gebildet. In dem Axialkanal ist der Unterdruckerzeuger vorzugsweise koaxial angeordnet. Bevorzugt ist der Unterdruckerzeuger zumindest abschnittsweise oder bereichsweise formschlüssig und gegebenenfalls kraftschlüssig in dem Hubkolben gehalten.Preferably, the reciprocating piston on an axial recording, which is connected via a channel, in particular radial channel with the pressure chamber, wherein in the recording of the vacuum generator is located. The receptacle extends coaxially or axially through the reciprocating piston, at least over a certain length, and is connected to the overpressure chamber, in particular through the radial passage. The radial channel is preferably formed by a tap hole. In the axial channel of the vacuum generator is preferably arranged coaxially. Preferably, the vacuum generator is at least partially or partially positively and optionally held non-positively in the reciprocating piston.

Bevorzugt ist zwischen der Aufnahme und dem Unterdruckerzeuger abschnittsweise ein Ringraum gebildet, der über mindestens einen Verbindungskanal mit dem Springelement beziehungsweise mit dem Saugkanal des Springelements wirkverbunden ist. In den Ringraum münden die wenigstens eine, vorzugsweise mehrere Saugöffnungen des Unterdruckerzeugers, sodass in dem Ringraum der an der Saugfläche wirkenden Unterdruck erzeugt wird. Zum Bilden des Ringraums weist entweder der Unterdruckerzeuger einen verringerten Außendurchmesser und/oder der Hubkolben einen vergrößerten Innendurchmesser auf.Preferably, an annular space is formed in sections between the receptacle and the vacuum generator, which has at least one connecting channel with the spring element or with the Suction channel of the spring element is operatively connected. The at least one, preferably a plurality of suction openings of the vacuum generator open into the annular space, so that the negative pressure acting on the suction surface is generated in the annular space. To form the annular space, either the vacuum generator has a reduced outer diameter and / or the reciprocating piston has an enlarged inner diameter.

Vorzugsweise mündet der Verbindungskanal des Hubkolbens in einer Unterdruckkammer, die von einem Ende des Hubkolbens und dem darin axial verlagerbar angeordneten Springelement gebildet ist. Wird dem Druckluftanschluss Druckluft zugeführt, so wird durch den Unterdruckerzeuger ein Unterdruck erzeugt, der sich durch den Verbindungskanal bis in die Unterdruckkammer auswirkt, sodass insbesondere, wenn das Springelement mit der Saugfläche einen Bogen erfasst hat, der Unterdruck in der Unterdruckkammer dazu führt, dass das Springelement in den Hubkolben hineingezogen wird. Wird die Druckluftzufuhr unterbunden oder bis unter einen Grenzwert verringert, so fällt das Springelement vorzugsweise aufgrund seines Eigengewichts, alternativ unter Zuhilfenahme eines Federelements in seine ausgelagerte Ausgangsstellung zurück.Preferably, the connecting channel of the reciprocating piston opens in a vacuum chamber, which is formed by one end of the reciprocating piston and therein axially displaceable spring element arranged. If compressed air is supplied to the compressed air connection, then a negative pressure is generated by the vacuum generator which acts through the connection channel into the vacuum chamber, so that, in particular if the spring element has detected an arc with the suction surface, the negative pressure in the vacuum chamber causes the negative pressure Spring element is pulled into the reciprocating piston. If the compressed air supply is suppressed or reduced below a limit, the spring element preferably falls back into its outsourced starting position due to its own weight, alternatively with the aid of a spring element.

Bevorzugt weist der Hubkolben einen sich zumindest im Wesentlichen Ober den Umfang erstreckenden und der Überdruckkammer zugeordneten Radialvorsprung auf. Der Radialvorsprung bildet zumindest einen Absatz beziehungsweise eine Kolbenfläche des Hubkolbens, die in der Überdruckkammer liegt. Der Radialvorsprung ist vorzugsweise derart ausgebildet beziehungsweise angeordnet, dass er sich axial zwischen dem in die Überdruckkammer mündenden Druckluftanschluss und dem Radialkanal des Hubkolbens befindet. Vorzugsweise ist dabei der Druckluftanschluss im Wesentlichen einem axialen Ende der Überdruckkammer zugeordnet, während der Radialkanal dem anderen axialen Ende zugeordnet ist. Der Radialvorsprung liegt vorzugsweise nahe zu dem Radialkanal zwischen dem Radialkanal und dem Druckluftanschluss. Gemäß einer alternativen Ausführungsform sind der Radialkanal und der Druckluftanschluss auf der gleichen Seite des Radialvorsprungs angeordnet, bevorzugt auf der dem Springelement entgegengesetzten Seite des Radialvorsprungs. Der Radialvorsprung kann auch zum Führen des Hubkolbens in dem Gehäuse des Hubsaugers dienen.The reciprocating piston preferably has a radial projection which extends at least substantially over the circumference and which is assigned to the overpressure chamber. The radial projection forms at least one shoulder or a piston surface of the lifting piston, which lies in the overpressure chamber. The radial projection is preferably designed or arranged such that it is located axially between the opening into the pressure chamber compressed air connection and the radial channel of the reciprocating piston. Preferably, the compressed air connection is essentially one associated with the axial end of the pressure chamber, while the radial channel is associated with the other axial end. The radial projection is preferably close to the radial passage between the radial passage and the compressed air port. According to an alternative embodiment, the radial channel and the compressed air connection are arranged on the same side of the radial projection, preferably on the side of the radial projection which is opposite to the spring element. The radial projection can also serve to guide the reciprocating piston in the housing of the Hubsaugers.

Bevorzugt sind der Radialvorsprung und/oder die Überdruckkammer derart ausgebildet, dass die Druckluft von dem Druckluftanschluss kommend an dem Radialvorsprung vorbei, insbesondere in den Radialkanal des Hubkolbens gelangt, sofern dieser auf der dem Springelement zugewandten Seite des Radialvorsprungs angeordnet ist. Dazu wird vorzugsweise der Außendurchmesser des Radialvorsprungs und/oder der Innendurchmesser der Überdruckkammer derart gewählt, dass ein Spiel zwischen dem Radialvorsprung und der Innenseite der Überdruckkammer besteht. Alternativ ist es auch denkbar, den Radialvorsprung mit Axialdurchbrüchen zu versehen und/oder in Umfangsrichtung segmentartig auszubilden, sodass die Druckluft durch Freiräume des Radialvorsprungs hindurchströmen kann. Dadurch wird gewährleistet, dass sowohl ein Überdruck in der Überdruckkammer als auch ein Unterdruck mittels des in Reihe dahinter geschalteten Unterdruckerzeugers erzeugt wird.Preferably, the radial projection and / or the pressure chamber are formed such that the compressed air coming from the compressed air connection past the radial projection passes, in particular in the radial channel of the reciprocating piston, provided that it is arranged on the spring element facing side of the radial projection. For this purpose, preferably the outer diameter of the radial projection and / or the inner diameter of the pressure chamber is selected such that a clearance between the radial projection and the inside of the pressure chamber. Alternatively, it is also conceivable to provide the radial projection with axial openings and / or form a segmental shape in the circumferential direction, so that the compressed air can flow through free spaces of the radial projection. This ensures that both an overpressure in the overpressure chamber and a negative pressure is generated by means of the vacuum generator connected in series behind it.

Um den Hubkolben in die gewünschte Richtung mittels des Überdrucks verlagern zu können, muss sichergestellt werden, dass der auf den Hubkolben wirkende Druck eine Druckkraft in gewünschter Richtung ausübt. Dazu ist bevorzugt vorgesehen, dass der Radialvorsprung auf der dem Springelement abgewandten Seite eine größere Axialfläche aufweist als auf der dem Springelement zugewandten Seite. Dies kann beispielsweise dadurch realisiert werden, dass der Außendurchmesser des Hubkolbens bezüglich dem Radialvorsprung auf der dem Springelement abgewandten Seite kleiner gewählt ist, als auf der dem Springelement zugewandten Seite. Dadurch, dass die eine Axialfläche größer ausgebildet ist als die andere, ergibt sich ein Kräfteverhältnis, das bewirkt, dass sich der Kolben bei Vorliegen eines Überdrucks in der Überdruckkammer in Richtung der Seite des Radialvorsprungs bewegt, die die kleinere Axialfläche aufweist, und damit in Richtung des Springelements. Durch Beaufschlagen des Druckanschluss mit Druckluft wird somit der Hubkolben in Richtung des Springelements verlagert und gleichzeitig ein Unterdruck in der Unterdruckkammer erzeugt. Durch eine entsprechende Wahl des oder der Durchströmungsquerschnitte des Radialvorsprungs sowie insbesondere des Einlasses des Unterdruckerzeugers wird gewährleistet, dass die Druckluft sowohl zum Verlagern des Hubkolbens als auch zum, Erzeugen des Unterdrucks genutzt wird. Prinzipiell es natürlich auch denkbar, dass die Flächenverhältnisse des Radialvorsprungs umgekehrt vorliegen, sodass bei Vorliegen eines Überdrucks in der Überdruckkammer der Hubkolben nach oben beziehungsweise von dem Bogen weg, also in die dem Springelement entgegengesetzte Richtung verlagert wird.In order to be able to displace the reciprocating piston in the desired direction by means of the overpressure, it must be ensured that the pressure acting on the reciprocating piston exerts a compressive force in the desired direction. For this purpose, it is preferably provided that the radial projection on the side facing away from the jumping element a larger Axial surface than on the spring element facing side. This can for example be realized in that the outer diameter of the reciprocating piston with respect to the radial projection on the side facing away from the spring element is selected to be smaller than on the spring element facing side. Characterized in that the one axial surface is formed larger than the other, there is a balance of forces, which causes the piston moves in the presence of an overpressure in the pressure chamber in the direction of the side of the radial projection, which has the smaller axial surface, and thus in the direction of the spring element. By pressurizing the pressure port with compressed air thus the reciprocating piston is displaced in the direction of the spring element and simultaneously generates a negative pressure in the vacuum chamber. By an appropriate choice of or the flow cross sections of the radial projection and in particular the inlet of the vacuum generator ensures that the compressed air is used both for displacing the reciprocating piston and for generating the negative pressure. In principle, it is of course also conceivable that the area ratios of the radial projection are present in reverse, so that in the presence of an overpressure in the pressure chamber of the reciprocating piston up or away from the arc, ie in the spring element opposite direction is shifted.

Gemäß einer vorteilhaften Weiterbildung der Erfindung ist vorgesehen, dass zwischen dem Radialvorsprung und dem Gehäuse, insbesondere auf der dem Radialkanal zugewandten Seite eine erste Druckfeder axialwirkend angeordnet ist. Die Druckfeder wird verspannt, spätestens wenn der Hubkolben in Richtung des Springelements durch den beaufschlagten Überdruck verlagert wird. Wird die Druckluftzufuhr unterbrochen oder bis zu einem bestimmten Grenzwert verringert, so sorgt die erste Druckfeder dafür, dass der Hubkolben in seine Ausgangsstellung zurückbewegt wird.According to an advantageous embodiment of the invention, it is provided that between the radial projection and the housing, in particular on the radial channel side facing a first compression spring is arranged axially acting. The compression spring is braced, at the latest when the reciprocating piston is displaced in the direction of the spring element by the applied pressure. If the compressed air supply is interrupted or up to a certain limit reduces, so ensures the first compression spring that the reciprocating piston is moved back to its original position.

Vorzugsweise ist zwischen dem Springelement und dem Hubkolben eine zweite Druckfeder axialwirkend angeordnet. Die zweite Druckfeder wirkt dem Unterdruck entgegen, sodass bei Unterbrechen der Druckluftzufuhr die Druckfeder das Springelement in seine Ausgangsstellung zurückdrängt. Natürlich ist es auch denkbar, nur die zweite Druckfeder oder nur die erste Druckfeder alleine in dem Hubsauger vorzusehen. Durch entsprechende Materialwahl und Toleranzen kann gewährleistet werden, dass insbesondere das Springelement aufgrund seines Eigengewichts in die Ausgangsstellung zurückgelangt, sobald die Druckluftzufuhr unterbrochen wird.Preferably, a second compression spring is arranged axially acting between the spring element and the reciprocating piston. The second compression spring counteracts the negative pressure, so that when the compressed air supply is interrupted, the compression spring forces the spring element back into its starting position. Of course, it is also conceivable to provide only the second compression spring or only the first compression spring alone in the Hubsauger. By appropriate choice of materials and tolerances can be ensured that in particular the spring element returns due to its own weight in the starting position as soon as the compressed air supply is interrupted.

Vorzugsweise weist der Unterdruckerzeuger wenigstens eine Durchströmungsquerschnittsverjüngung auf. Besonders bevorzugt ist der Unterdruckerzeuger als ein- oder mehrstufige Venturidüse ausgebildet, wodurch an der einen oder an den mehreren Saugöffnungen ein besonders hoher Unterdruck erzeugbar ist.Preferably, the vacuum generator has at least one flow cross-sectional taper. Particularly preferably, the vacuum generator is designed as a single-stage or multi-stage Venturi nozzle, whereby a particularly high negative pressure can be generated at one or more suction openings.

Gemäß einer bevorzugten Weiterbildung der Erfindung ist vorgesehen, dass der Hubsauger Mittel zum Verlagern des Hubkolbens entgegen dem in der Überdruckkammer erzeugten Druck aufweist. Der Hubsauger weist somit Mittel auf, die es erlauben, den Kolben auch dann anzuheben beziehungsweise in die dem Springelement entgegengesetzte Richtung zu verlagern, wenn durch die zugeführte Druckluft in der Überdruckkammer ein Überdruck eingestellt ist. Dadurch ist es möglich, bei Beibehalten des Druckluftstroms und des daraus resultierenden, auf das Springelement wirkenden Unterdrucks, den Hubkolben anzuheben, so dass ein angesaugter Bogen sicher an der Saugfläche verbleibt und durch Verlagern des Hubkolbens weiter angehoben werden kann.According to a preferred embodiment of the invention it is provided that the lifting sucker means for displacing the reciprocating piston against the pressure generated in the pressure chamber. The lifting sucker thus has means which allow the piston to be raised or displaced in the opposite direction to the spring element if an overpressure is set by the supplied compressed air in the overpressure chamber. This makes it possible, while maintaining the compressed air flow and the resulting, acting on the spring element negative pressure to lift the reciprocating piston, so that a sucked bow safely remains on the suction surface and can be further raised by moving the reciprocating piston.

Weiterhin ist bevorzugt vorgesehen, dass dem Druckluftanschluss ein betätigbares Ventil zum Einstellen eines Druckluftstroms zugeordnet ist. Besonders bevorzugt weist der Druckluftanschluss das Ventil auf. Das auf diese Art und Weise in den Hubsauger integrierte Ventil ist vorzugsweise elektrisch betätigbar. Insgesamt wird somit eine kompakte Hubsauger-Einheit geboten, die lediglich mit der die Druckluft bereitstellenden Einrichtung und einer entsprechenden Steuereinheit verbunden werden muss. Die zum Anheben eines Bogens notwendigen axialen Bewegungen übernimmt der Hubsauger vollständig selbst, ohne dass eine externe Verlagereinrichtung vorgesehen werden muss.Furthermore, it is preferably provided that the compressed air connection is associated with an actuatable valve for adjusting a compressed air flow. Particularly preferably, the compressed air connection to the valve. The integrated in the manner in the Hubsauger valve is preferably electrically actuated. Overall, therefore, a compact Hubsauger unit is offered, which only needs to be connected to the device providing the compressed air and a corresponding control unit. The necessary for lifting a sheet axial movements of the lifting sucker takes over completely, without an external displacement device must be provided.

Die bogenverarbeitende Maschine zeichnet sich durch die Ausbildung des Hubsaugers wie er oben beschrieben wurde aus. Insbesondere ist der Hubsauger der bogenverarbeitenden Maschine als Vereinzelungs- beziehungsweise Anhebevorrichtung für zu bearbeitende Bögen, insbesondere Papierbögen, ausgebildet. Einen seitlichen Transport des Bogens übernehmen vorzugsweise ein oder mehrere seitlich verlagerbare Transportiersauger.The sheet-processing machine is characterized by the design of the Hubsaugers as described above. In particular, the lifting sucker of the sheet-processing machine is designed as a separating or lifting device for sheets to be processed, in particular paper sheets. A lateral transport of the sheet preferably take one or more laterally displaceable Transportiersauger.

Besonders bevorzugt ist zwischen dem Druckluftanschluss und der Druckluft bereitstellenden Einrichtung ein betätigbares Ventil zwischengeschaltet. Sind mehrere entsprechende Hubsauger vorgesehen, so ist das Ventil zweckmäßigerweise zwischen der Einrichtung und einer Druckluftverzweigung, die die Druckluft den jeweiligen Hubsaugern zuführt, zwischengeschaltet, sodass durch Betätigen des einen elektrischen Ventils mehrere Hubsauger gleichzeitig betätigbar sind beziehungsweise betätigt werden. Alternativ oder zusätzlich weist jeder Hubsauger ein eigenes, integriert angeordnetes Ventil auf.Particularly preferably, an actuatable valve is interposed between the compressed air connection and the device providing the compressed air. If several corresponding lifting suckers are provided, then the valve is expediently interposed between the device and a compressed air branch which supplies the compressed air to the respective lifting suckers, so that several lifting suckers can be actuated or actuated simultaneously by actuating the one electric valve. Alternatively or In addition, each Hubsauger has its own, integrated valve arranged.

Im Folgenden soll die Erfindung anhand der Zeichnung näher erläutert werden. Dazu zeigen im Folgenden:

Figur 1
einen vorteilhaften Hubsauger in einer Seitenansicht,
Figur 2
den Hubsauger in einer Längsschnittdarstellung und
Figuren 3A bis 3D
den Hubsauger in unterschiedlichen Betriebsstellungen.
In the following, the invention will be explained in more detail with reference to the drawing. In addition to this show
FIG. 1
an advantageous Hubsauger in a side view,
FIG. 2
the Hubsauger in a longitudinal sectional view and
FIGS. 3A to 3D
the lifting sucker in different operating positions.

Figur 1 zeigt in einer Seitenansicht einen Hubsauger 1 einer hier nicht näher dargestellten, bogenverarbeitenden Maschine 2, die beispielsweise als Papiervereinzeler zum Vereinzeln von Papierbögen ausgebildet ist. Der Hubsauger 1 umfasst ein Gehäuse 3, das durch beispielsweise Verschraubung oder Verklemmung mit einem Trägerelement der Maschine 2 verbindbar ist. Durch das Gehäuse 3 erstreckt sich ein Hubkolben 4, der axial verschiebbar in dem Gehäuse 3 gelagert ist Das Gehäuse 3 weist einen Druckluftanschluss 5 für eine Druckluft bereitstellende Einrichtung auf, der radial angeordnet beziehungsweise ausgerichtet ist. Der Hubkolben 4 weist an einem Ende einen Auslass 6 auf, der in die Umgebung beziehungsweise Außenluft mündet, und trägt an seinem dem Auslass 6 gegenüberliegenden Ende ein Springelement 7, das eine endseitige Saugfläche 8 bildet Das Springelement 7 ist axial verlagerbar in dem Hubkolben 4 gelagert. Die Saugfläche 8 des Springelements 7 steht in Wirkverbindung mit einem in dem Hubsauger 1 angeordneten Unterdruckerzeuger, der zum Erzeugen von Unterdruck von Druckluft, die dem Druckluftanschluss 5 zugeführt wird, durchströmbar ist. Dies soll anhand der folgenden Figur näher erläutert werden, FIG. 1 shows in a side view of a lifting sucker 1 of a not shown here, sheet-processing machine 2, which is designed for example as Papiervereinzeler for separating sheets of paper. The lifting vacuum cleaner 1 comprises a housing 3 which can be connected to a carrier element of the machine 2 by, for example, screwing or clamping. Through the housing 3, a reciprocating piston 4, which is axially displaceably mounted in the housing 3 extends. The housing 3 has a compressed air connection 5 for a device providing compressed air, which is arranged radially or aligned. The reciprocating piston 4 has at one end an outlet 6, which opens into the environment or outside air, and carries at its end opposite the outlet 6 a spring element 7, which forms an end suction surface 8 The spring element 7 is mounted axially displaceable in the reciprocating 4 , The suction surface 8 of the spring element 7 is in operative connection with a suction generator arranged in the vacuum cleaner 1, which is for generating a negative pressure of compressed air, which is supplied to the compressed air connection 5, can be flowed through. This will be explained in more detail with reference to the following figure,

Figur 2 zeigt eine Längsschnittdarstellung durch den Hubsauger 1 der Figur 1. Das Gehäuse 3 ist zweiteilig ausgebildet und weist ein topfförmiges Unterteil 9 sowie ein deckelartiges Oberteil 10 auf, die im zusammengesetzten, dargestellten Zustand zusammen mit dem Hubkolben 4 eine ringförmige Überdruckkammer 11 bilden, in welche der Druckluftanschluss 5 beziehungsweise dessen Öffnung mündet. Das Oberteil 10 und das Unterteil 9 weisen zueinander fluchtende Führungsöffnungen 12, 13 auf, in welchen der Hubkolben 4 verschiebbar gelagert ist. Bevorzugt sind, wie dargestellt, in die jeweilige Führungsöffnung 12, 13 Lagerelemente 14, 15 eingesetzt, die zur reibungsarmen Gleitlagerung des Hubkolbens 4 sowie zum Abdichten der Überdruckkammer 11 dienen. FIG. 2 shows a longitudinal sectional view through the Hubsauger 1 of FIG. 1 , The housing 3 is formed in two parts and has a cup-shaped lower part 9 and a lid-like upper part 10, which form an annular overpressure chamber 11 in the assembled, illustrated state together with the reciprocating piston 4, in which the compressed air port 5 and the opening thereof opens. The upper part 10 and the lower part 9 have mutually aligned guide openings 12, 13, in which the lifting piston 4 is slidably mounted. Preferably, as shown, in the respective guide opening 12, 13 bearing elements 14, 15 are used, which serve for low-friction sliding bearing of the reciprocating piston 4 and for sealing the pressure chamber 11.

Der Hubkolben 4 ist ebenfalls zweiteilig ausgebildet und weist einen auslassseitigen Teil 16 sowie einen sphrigelementseitigen Teil 17 auf. Das dem Teil 17 zugewandte Ende des Teils 16 weist ein Außengewinde auf, während das dem Teil 16 zugewandte Ende des Teils 17 ein Innengewinde aufweist, sodass die beiden Teile 16 und 17 miteinander verschraubbar sind. Die durch das Innengewinde und das Außengewinde gebildete Schraubverbindung 18 ist vorzugsweise derart angeordnet, dass sie stets beziehungsweise in jeder Stellung des Hubkolbens 4 zumindest im Wesentlichen außerhalb des Gehäuses 3 liegt, sodass der Hubkolben 4 stets durch das Teil 17 in dem Gehäuse 3 gelagert Ist.The reciprocating piston 4 is also formed in two parts and has an outlet-side part 16 and a sphrigelementseitigen part 17. The part 17 facing the end of the part 16 has an external thread, while the part 16 facing the end of the part 17 has an internal thread, so that the two parts 16 and 17 are screwed together. The screw 18 formed by the internal thread and the external thread is preferably arranged such that it is always or in any position of the reciprocating piston 4 at least substantially outside of the housing 3, so that the reciprocating piston 4 is always supported by the part 17 in the housing 3.

Die Teile 16 und 17 bilden zusammen eine Aufnahme 19, die sich axial über einen Abschnitt des Hubkolbens 4 erstreckt. In der Aufnahme 19 ist ein Unterdruckerzeuger 20 koaxial gehalten. Der Unterdruckerzeuger 20 ist hülsenförmig ausgebildet und weist einen axialen Einlass 21, einen axialen Auslass 22 sowie mehrere radial in der Mantelwand ausgebildete Saugöffnung 23 auf, von denen hier nur einige mit Bezugszeichen versehen sind. An seinem den Auslass 22 aufweisenden Ende ist der Unterdruckerzeuger 20 radial formschlüssig in dem Teil 18 des Hubkolbens 4 gehalten. Der Auslass 22 geht dabei in den Auslass 6 des Hubkolbens 4 über. Bevorzugt ist der Unterdruckerzeuger 20 in der Art einer Venturidüse gebaut und weist dazu wenigstens eine Durchchströmungsquerschnittsverjüngung auf, insbesondere im Bereich einer der radialen Saugöffnungen 23. Mit seinem den Einlass 21 aufweisenden/bildenden Ende dringt der Unterdruckerzeuger 20 bereichsweise in einen Axialkanal 24 des Hubkolbens 4 ein. Bei der Montage wird der Unterdruckerzeuger 20 zunächst in das Teil 17 bis zum Anschlag eingeschoben, und anschließend das Teil 16 auf das Teil 17 aufgeschraubt, bis der Unterdruckerzeuger 20 axial zwischen den Teilen 16 und 17 verspannt und somit festgehalten ist. Die Aufnahme 19 und der Unterdruckerzeuger 20 sind dabei derart ausgebildet, dass sie im montierten Zustand zwischen sich einen Ringraum 25 bilden, der sich über einen wesentlichen axialen Abschnitt des Unterdruckerzeugers 20 erstreckt. Bevorzugt weist dazu die Aufnahme 19 in dem genannten Abschnitt einen vergrößerten Innendurchmesser auf. Über wenigstens einen vorzugsweise axial in dem Ringraum 25 mündenden Verbindungskanal 26 ist der Ringraum 25 strömungstechnisch mit dem Springelement 7 verbunden. Hierauf soll später näher eingegangen werden.The parts 16 and 17 together form a receptacle 19 which extends axially over a portion of the reciprocating piston 4. In the receptacle 19, a vacuum generator 20 is held coaxially. The vacuum generator 20 is sleeve-shaped and has an axial inlet 21, an axial outlet 22 and a plurality of radially formed in the shell wall suction opening 23, of which only a few are provided with reference numerals. At its outlet 22 having the end of the vacuum generator 20 is held radially positive fit in the part 18 of the reciprocating piston 4. The outlet 22 passes into the outlet 6 of the reciprocating piston 4. Preferably, the vacuum generator 20 is constructed in the manner of a Venturi nozzle and has at least one Durchschströmungsquerschnittsrejüngung on, in particular in the region of one of the radial suction ports 23. With its inlet 21 having / forming end of the vacuum generator 20 penetrates partially into an axial passage 24 of the reciprocating piston 4 a , During assembly, the vacuum generator 20 is first inserted into the part 17 to the stop, and then the part 16 is screwed onto the part 17 until the vacuum generator 20 is clamped axially between the parts 16 and 17 and thus held. The receptacle 19 and the vacuum generator 20 are designed such that they form in the assembled state between them an annular space 25 which extends over a substantial axial portion of the vacuum generator 20. For this purpose, the receptacle 19 preferably has an enlarged inner diameter in said section. By way of at least one connecting channel 26, which opens preferably axially in the annular space 25, the annular space 25 is fluidically connected to the spring element 7. This will be discussed later.

Das Teil 17 des Hubkolbens 4 weist weiterhin einen Radialkanal 27 auf, der vorzugsweise als Stichbohrung ausgebildet ist und in den Axialkanal 24 der Aufnahme 19 mündet, sodass der Einlass 21 des Unterdruckerzeugers 20 über den Axialkanal 24 und den Radialkanal 27 mit der Überdruckkammer 11 in Verbindung steht.The part 17 of the reciprocating piston 4 further comprises a radial passage 27 which is preferably formed as a tap hole and opens into the axial channel 24 of the receptacle 19, so that the inlet 21 of the Vacuum generator 20 via the axial channel 24 and the radial channel 27 with the pressure chamber 11 is in communication.

Der Hubkolben 4 weist weiterhin einen Radialvorsprung 28 auf, der sich im Wesentlichen über den gesamten Umfang des Hubkolbens 4 erstreckt und eine erste, den Druckluftanschluss 5 zugewandte Axialfläche 29 und eine zweite, dem Radialkanal 27 zugeordnete Axialfläche 30 bildet, wobei die Axialflächen 29 und 30 parallel zueinander ausgerichtet sind und unterschiedliche Größen aufweisen. Dazu weist der Teil 17 des Hubkolbens 4 auf der den Radialkanal 27 aufweisenden Seite einen größeren Durchmesser auf als auf der dem Druckluftanschluss 5 zugeordneten Seite. Dadurch ist die Axialfläche 30 kleiner als die Axialfläche 29 ausgebildet. Die durch den Druckluftanschluss 5 in die Überdruckkammer 11 führbare Druckluft gelangt sowohl in den Bereich der Überdruckkammer 11, der zwischen der Axialfläche 29 und dem Oberteil 10 gebildet wird, als auch in den Bereich, der von der Axialfläche 30 und dem Boden des topfförmigen Unterteils 9 begrenzt wird. Hierzu ist der Außendurchmesser des Radialvorsprungs 28 zweckmäßigerweise derart gewählt, dass ein Spiel zwischen dem Radialvorsprung 28 und der Innenseite des Gehäuses 3 beziehungsweise des Unterteils 9 besteht, durch welches die Druckluft sich in der gesamten Überdruckkammer 11 ausbreiten kann. Alternativ ist es auch denkbar, den Radialvorsprung 28 mit einer oder mehreren Axialaussparungen vorzusehen, durch welche die Druckluft an dem Radialvorsprung 28 vorbei gelangt.The reciprocating piston 4 further has a radial projection 28 which extends substantially over the entire circumference of the reciprocating piston 4 and a first, the compressed air port 5 facing axial surface 29 and a second, the radial channel 27 associated axial surface 30 forms, the axial surfaces 29 and 30th are aligned parallel to each other and have different sizes. For this purpose, the part 17 of the reciprocating piston 4 on the radial channel 27 having side has a larger diameter than on the compressed air connection 5 associated side. As a result, the axial surface 30 is smaller than the axial surface 29 is formed. The compressed air which can be guided through the compressed air connection 5 into the overpressure chamber 11 reaches both the region of the overpressure chamber 11 which is formed between the axial surface 29 and the upper part 10 and into the region which extends from the axial surface 30 and the bottom of the cup-shaped lower part 9 is limited. For this purpose, the outer diameter of the radial projection 28 is suitably chosen such that there is a clearance between the radial projection 28 and the inside of the housing 3 and the lower part 9, through which the compressed air can propagate in the entire pressure chamber 11. Alternatively, it is also conceivable to provide the radial projection 28 with one or more axial recesses through which the compressed air passes by the radial projection 28.

Das das Springelement 7 tragende Ende des Hubkolbens 4 beziehungsweise des Teils 17 weist eine randoffene, topfartige Aussparung 31 auf, in welcher das Springelement 7 mit seinem hubkolbenseitigen Ende 32 axial verlagerbar gehalten ist. Der Bewegungsweg des Springelements 32 wird dabei bevorzugt durch zwei Sicherungsringe, beispielsweise O-Ringe 33 begrenzt. Das Springelement 7 ist hülsenartig ausgebildet und weist einen sich von dem hubkolbenseitigen Ende bis zu der Saugfläche 8 erstreckenden Saugkanal 34 auf. Der Aufbau von Springelementen ist prinzipiell bekannt, sodass hier nicht näher darauf eingegangen werden soll. Das Ende 32 sowie die Aussparung 31 bilden zusammen eine Unterdruckkammer 35, in welche der Verbindungskanal 26 mündet, sodass der Ringraum 25 Ober den Verbindungskanal 26 mit der Unterdruckkammer 35 und dem Springelement 7 in Verbindung steht.The spring element 7 carrying end of the reciprocating piston 4 and the part 17 has an open-edged pot-shaped recess 31, in which the spring element 7 is held with its hubkolbenseitigen end 32 axially displaceable. The movement path of the spring element 32 is preferably by two retaining rings, For example, limited to O-rings 33. The spring element 7 is sleeve-shaped and has a suction channel 34 extending from the piston end to the suction surface 8. The structure of jumping elements is known in principle, so it will not be discussed further here. The end 32 and the recess 31 together form a vacuum chamber 35, into which the connecting channel 26 opens, so that the annular space 25 is above the connecting channel 26 with the vacuum chamber 35 and the spring element 7 in conjunction.

Im Folgenden soll nunmehr die Funktion des vorteilhaften Hubsaugers 1 näher erläutert werden. Durch den Druckluftanschluss 5 wird dem Hubsauger 1 Druckluft, also Luft oder ein anderes Gas, das einen Überdruck aufweist, dem Hubsauger 1 zugeführt. Die Druckluft gelangt in die Überdruckkammer 11, wodurch der Druck in der Überdruckkammer 11 erhöht wird. Aufgrund des Flächenverhältnisses der Axialflächen 29 und 30 bewirkt der in der Überdruckkammer 11 erzeugte Druck, dass der Hubkolben 4 zunächst in Richtung des Springelements 7, wie durch einen Pfeil 36 angedeutet, verlagert wird. Dadurch wird das Springelement 7 zu einem zu verarbeitenden Bogen (hier nicht dargestellt) geführt, ohne dass das Gehäuse 3 beziehungsweise der gesamte Hubsauger 1 bewegt werden müsste. Gleichzeitig strömt die Druckluft durch den Radialkanal 27 und den Axialkanal 24 in den Einlass 21 des Unterdruckerzeugers 20 und durchströmt diesen axial. Dadurch wird über die Saugöffnungen 23 Luft aus dem Ringraum 25 angesaugt, sodass ein Unterdruck erzeugt wird, der sich bis in die Unterdruckkammer 35 über den Verbindungskanal 26 auswirkt. Sobald das Springelement 7 mit der Saugfläche 8 auf den zugreifenden Bogen trifft, wird dieser an die Saugfläche 8 angesaugt, wodurch der Saugkanal 34 verschlossen wird, wodurch sich der Unterdruck in der Unterdruckkammer 35 erhöht, was zur Folge hat, dass das Springelement 7 in die Unterdruckkammer 35 hineingezogen wird, wie durch einen Pfeil 37 angedeutet. Dadurch wird der Bogen automatisch angehoben, sobald der axial nach unten bewegte Hubkolben 4 mit dem Springelement 7 auf den Bogen trifft.In the following, the function of the advantageous Hubsaugers 1 will now be explained in more detail. By the compressed air connection 5 the lifting sucker 1 compressed air, so air or other gas having an overpressure, the Hubsauger 1 is supplied. The compressed air passes into the overpressure chamber 11, whereby the pressure in the overpressure chamber 11 is increased. Due to the area ratio of the axial surfaces 29 and 30, the pressure generated in the overpressure chamber 11 causes the reciprocating piston 4 initially in the direction of the spring element 7, as indicated by an arrow 36, is displaced. As a result, the spring element 7 is guided to a sheet to be processed (not shown here), without the housing 3 or the entire lifting sucker 1 having to be moved. At the same time, the compressed air flows through the radial channel 27 and the axial channel 24 into the inlet 21 of the vacuum generator 20 and flows through it axially. As a result, air is sucked out of the annular space 25 via the suction openings 23, so that a negative pressure is generated which has an effect up to the vacuum chamber 35 via the connecting channel 26. As soon as the jumping element 7 meets with the suction surface 8 on the accessing sheet, this is sucked to the suction surface 8, whereby the suction channel 34 is closed is, whereby the negative pressure in the vacuum chamber 35 increases, which has the consequence that the jumping element 7 is drawn into the vacuum chamber 35, as indicated by an arrow 37. As a result, the sheet is automatically raised as soon as the axially downwardly moving reciprocating piston 4 strikes the spring element 7 on the sheet.

Vorzugsweise ist zwischen der Axialfläche 30 und dem Boden des Unterteils 9 eine erste Druckfeder vorgesehen, die entgegen der Richtung des Pfeils 36 wirkt beziehungsweise verspannbar ist, sodass die erste Druckfeder bei Unterbrechen der Druckluftzufuhr den Hubkolben 4 zurück in seine Ausgangsstellung verlagert. Alternativ oder zusätzlich kann eine zweite Druckfeder zwischen dem Springelement 7 und dem Boden der Aussparung 31 vorgesehen sein, welche das Springelement 7 entgegen der Saugrichtung nach außen in seine Ausgangsstellung drängt. Wird die Druckluftzufuhr unterbrochen oder verringert, werden der Hubkolben 4 und das Springelement 7 in ihre jeweilige Ausgangsposibon automatisch zurückverlagert. Besonders bevorzugt sind die erste und/oder die zweite Druckfeder derart ausgelegt, das wenn die Druckluftzufuhr verringert wird, zunächst die erste Druckfeder und erst mit weiter verringerter Druckluftzufuhr die zweite Druckfeder in ihre zumindest im Wesentlichen entspannte Ruhestellung gelangt. Besonders bevorzugt ist die erste Druckfeder derart ausgebildet, dass sie bei Unterschreiten eines ersten Grenzwertes der Druckluftzufuhr den Hubkolben 4 in seine Ausgangsstellung verlagert, und die zweite Druckfeder derart, dass sie bei Unterschreiten eines zweiten Grenzwertes, der unterhalb des ersten Grenzwertes liegt, das Springelement 7 in seine Ausgangsposition zurückverlagert.Preferably, a first compression spring is provided between the axial surface 30 and the bottom of the lower part 9, which counteracts the direction of the arrow 36 or is clamped, so that the first compression spring displaces the reciprocating piston 4 back to its starting position at interrupting the compressed air supply. Alternatively or additionally, a second compression spring between the spring element 7 and the bottom of the recess 31 may be provided which urges the spring element 7 against the suction direction to the outside in its initial position. If the compressed air supply is interrupted or reduced, the reciprocating piston 4 and the spring element 7 are automatically shifted back to their respective output position. Particularly preferably, the first and / or the second compression spring are designed such that when the compressed air supply is reduced, first the first compression spring and only with further reduced compressed air supply passes the second compression spring in its at least substantially relaxed rest position. Particularly preferably, the first compression spring is designed such that it displaces the reciprocating piston 4 in its initial position falls below a first limit value of the compressed air supply, and the second compression spring such that it falls below a second limit, which is below the first limit, the spring element. 7 moved back to its original position.

Anhand der Figuren 3A bis 3D soll nunmehr der Verlauf eines Hubvorgangs mittels des Hubsaugers 1 erläutert werden, wobei die Figurren 3A bis 3D den Hubsauger 1 in unterschiedlichen Betriebsstellungen während des Hubvorgangs zeigen. Dabei ist der Hubsauger 1 jeweils in einer Längsschnittdarstellung gezeigt, für die jedoch ein anderer Schnitt durch den Hubsauger 1 gewählt wurde, sodass der Druckluftanschluss 5 sowie der Radalkanal 27 nicht erkennbar sind.Based on FIGS. 3A to 3D will now be explained the course of a lifting operation by means of Hubsaugers 1, wherein the figure Ren 3A to 3D show the Hubsauger 1 in different operating positions during the lifting process. In this case, the lifting sucker 1 is shown in each case in a longitudinal sectional view, for which, however, a different section was selected by the Hubsauger 1, so that the compressed air connection 5 and the Radalkanal 27 are not visible.

Figur 3A zeigt den Hubsauger 1 in seiner Ausgangsstellung, in welcher der Hubkolben 4 sich in einer zurückgezogenen Endstellung befindet. Diese wird insbesondere durch die oben beschriebene erste Druckfeder erreicht. Das Springelement 7 befindet sich in seiner ausgelagerten beziehungsweise ausgefahrenen Endstellung, die beispielsweise durch das Eigengewicht des Springelements 7 oder durch die optional vorgesehene zweite Druckfeder erreicht wird. Die Saugfläche 8 befindet sich somit auf einer neutralen Ausgangsebene. FIG. 3A shows the Hubsauger 1 in its initial position in which the reciprocating piston 4 is in a retracted end position. This is achieved in particular by the first compression spring described above. The spring element 7 is in its outsourced or extended end position, which is achieved for example by the weight of the spring element 7 or by the optionally provided second compression spring. The suction surface 8 is thus located on a neutral output level.

Wird nun der Druckluftanschluss 5 mit Druckluft beaufschlagt, so erhöht sich der Druck in der Überdruckkammer 11, wobei aufgrund der Flächenverhältnisse der Axialflächen 29 und 30 der Hubkolben 4 in Richtung des Pfeils 36 nach unten in Richtung des Bogens verlagert wird, bis er die in Figur 3B gezeigte, ausgefahrene Endstellung erreicht. Zweckmäßigerweise ist der Aufbau der bogenverarbeitenden Maschine 2 derart gewählt, dass der Verfahrweg in Richtung des Pfeils 36 größer ist, als der Abstand zwischen der Saugfläche 8 und dem zu verarbeitenden Bogen im eingezogenem, in Figur 3A dargestellten Zustand, sodass, wenn sich der Hubkolben 4 in seiner ausgefahrenen Endstellung, wie in Figur 3B dargestellt, befindet, das Springelement 7 auf dem zu verarbeitenden Bogen aufliegt und gegebenenfalls ein Stück weit in die Aussparung 31 hineingeschoben ist. Sobald das Springelement 7 mit der Saugfläche 8 auf dem Bogen aufliegt, wird der durch das Springelement 7 führende Kanal verschlossen. Durch die durch den Unterdruckerzeuger 20 strömende Druckluft wird- wie oben beschrieben - ein Unterdruck in der Unterdruckkammer 35 erzeugt. Dieser Unterdruck sorgt dafür, dass der zu verarbeitende Bogen an der Saugfläche 8 gehalten wird. Sobald der Bogen den Saugkanal des Springelements 7 verschlossen hat, erhöht sich der Unterdruck in der Unterdruckkammer 35 derart, dass das Springelement 7 in Richtung des Pfeils 37 in die Aussparung 31 hineingezogen wird, bis es eine eingezogene Endstellung, wie in Figur 3C dargestellt, erreicht. Dabei wird der Bogen mit in Richtung des Springelements 7 gezogen und somit insbesondere von darunter befindlichen Bögen abgehoben beziehungsweise entfernt. Auf diese Art und Weise erfolgt eine besonders sichere Bogenvereinzelung.If now the compressed air connection 5 is acted upon by compressed air, then the pressure in the overpressure chamber 11 increases, wherein due to the area ratios of the axial surfaces 29 and 30 of the reciprocating piston 4 is displaced in the direction of the arrow 36 downwards in the direction of the arc until it the in FIG. 3B shown, extended end position reached. Conveniently, the structure of the sheet-processing machine 2 is selected such that the travel in the direction of arrow 36 is greater than the distance between the suction surface 8 and the sheet to be processed in the retracted, in FIG. 3A illustrated state, so that when the lifting piston 4 in its extended end position, as in FIG. 3B illustrated, is located, the spring element 7 rests on the sheet to be processed and possibly pushed a piece into the recess 31 is. As soon as the spring element 7 rests with the suction surface 8 on the sheet, the leading through the spring element 7 channel is closed. As described above, a negative pressure in the vacuum chamber 35 is generated by the compressed air flowing through the vacuum generator 20. This negative pressure ensures that the sheet to be processed is held on the suction surface 8. As soon as the sheet has closed the suction channel of the spring element 7, the negative pressure in the vacuum chamber 35 increases in such a way that the spring element 7 is pulled into the recess 31 in the direction of the arrow 37 until it reaches a retracted end position, as in FIG FIG. 3C shown achieved. The bow is pulled in the direction of the spring element 7 and thus in particular lifted or removed from underlying arches. In this way, a particularly secure sheet separation takes place.

Wird nunmehr der zugeführte Druckluftstrom derart verringert, dass der in der Überdruckkammer 11 herrschende Druck nicht mehr ausreicht, um die erste Druckfeder zu verspannen, verlagert die erste Druckfeder den Hubkolben 4 zurück in seine zurückgezogene Stellung, wie in Figur 3D dargestellt. Wird der Druckluftstrom nicht vollständig unterbrochen, so bleibt der Bogen weiterhin durch die Unterdruckwirkung an der Saugfläche 8 des Springelements 7 hängen. Sobald die Saugfläche 8 und damit der erfasste Bogen eine gewünsche Höhe beziehungsweise Ebene erreicht hat, und gegebenenfalls ein Transportsauger den vereinzelten Bogen erfasst hat, wird die Druckluftzufuhr vollständig unterbrochen, sodass der Bogen freigegeben wird und das Springelement 7 in seine ausgelagerte Endstellung, wie in Figur 3A gezeigt, zurückfällt oder durch die zweite Druckfeder gedrängt wird.Now, if the supplied compressed air flow is reduced so that the pressure prevailing in the pressure chamber 11 pressure is no longer sufficient to clamp the first compression spring, the first compression spring displaces the reciprocating piston 4 back to its retracted position, as in Figure 3D shown. If the compressed air flow is not completely interrupted, the sheet will continue to hang due to the negative pressure effect on the suction surface 8 of the spring element 7. Once the suction surface 8 and thus the detected sheet has reached a desired height or level, and optionally a transport suction has detected the scattered sheet, the compressed air supply is completely interrupted, so that the sheet is released and the jumping element 7 in its outsourced end position, as in FIG. 3A shown, falls back or pushed by the second compression spring.

Gemäß einer bevorzugten, hier nicht dargestellten Ausführungsform, ist dem Druckluftanschluss 5 ein betätigbares Ventil zugeordnet, mittels dessen der Druckluftstrom einstellbar ist. Dadurch bildet der Hubsauger 1 eine besonders kompakte Baueinheit Besonders bevorzugt ist das Ventil in dem Druckluftanschluss 5 angeordnet. Alternativ ist es denkbar, das Ventil der die Druckluft bereitstellenden Einrichtung oder einem Verbindungskanal, der von der Einrichtung zu dem Hubsauger führt, zuzuordnen. Dadurch ist es prinzipiell auch möglich, mehrere Hubsauger der bogenverarbeitenden Maschine gleichzeitig mit einem gewünschten Druckluftstrom zu versorgen.According to a preferred, not shown embodiment, the compressed air connection 5 is associated with an actuatable valve, by means of which the compressed air flow is adjustable. As a result, the lifting sucker 1 forms a particularly compact structural unit. The valve is particularly preferably arranged in the compressed air connection 5. Alternatively, it is conceivable to associate the valve with the device providing the compressed air or with a connecting channel leading from the device to the lifting suction device. As a result, it is also possible in principle to supply a plurality of lifting suckers of the sheet-processing machine simultaneously with a desired compressed-air flow.

Gemäß einer vorteilhaften, hier nicht dargestellten Ausführungsform, ist der hülsenförmige Unterdruckerzeuger 20 als mehrstufige Venturidüse ausgebildet, wobei er in Durchströmungsrichtung gesehen sich vergrößernde Querschnitte beziehungsweise Durchmesser aufweist, denen jeweils zumindest eine Saugöffnung 23 und vorzugsweise auch jeweils eine Durchströmungsquerschnittsverjüngung zugeordnet ist, um die Saugwirkung zu erhöhen.According to an advantageous, not shown embodiment, the sleeve-shaped vacuum generator 20 is formed as a multi-stage venturi, wherein it seen in the direction of flow enlarging cross-sections or diameters, which in each case at least one suction port 23 and preferably also each a Durchströmungsquerschnittsverjünung is assigned to the suction increase.

Vorzugsweise weist der Hubkolben 4 Mittel 38 auf, die ein Verlagern des Hubkolbens entgegen dem in der Druckkammer 11 erzeugten Druck ermöglichen. Vorliegend werden die Mittel 38 von einem weiteren Radialvorsprung 39 gebildet, der an dem Hubkolben 4 nahe zu dem Auslass 6 beziehungsweise an dem dem Springelement 7 gegenüberliegenden Ende des Hubkolbens 4 angeordnet ist. An dem weiteren Radialvorsprung 39 kann eine Aktorik angreifen, die den Hubkolben 4 in Richtung des Pfeils 37 bewegt, auch wenn der maximale Druckluftstrom durch den Druckluftanschluss 5 in die Überdruckkammer 11 strömt.Preferably, the reciprocating piston 4 has means 38 which allow a displacement of the reciprocating piston against the pressure generated in the pressure chamber 11. In the present case, the means 38 are formed by a further radial projection 39 which is arranged on the reciprocating piston 4 close to the outlet 6 or on the spring element 7 opposite the end of the reciprocating piston 4. At the further radial projection 39 can act on an actuator that moves the reciprocating piston 4 in the direction of arrow 37, even if the maximum compressed air flow through the compressed air port 5 flows into the overpressure chamber 11.

In einer bevorzugten Ausführungsform, ist die Aktorik als Bestandteil des Hubsaugers 1 ausgebildet. Dabei kann die Aktorik beispielsweise einen pneumatischen, elektrischen oder elektromagnetischen Aktor umfassen, der den Hubkolben 4 an dem weiteren Radialvorsprung 39 mit einer Kraft entgegen der in der Überdruckkammer 11 erzeugten Druckkraft beaufschlagt. Dadurch ist es möglich, den Unterdruck in der Unterdruckkammer 35 beizubehalten, während der Hubkolben 4 nach oben bewegt wird. Hierdurch lässt sich also die in Figur 3D gezeigte Betriebstellung der Hubsaugers 1 auch ohne Verringerung des Druckluftstroms und/oder entsprechend ausgelegte Druckfedern erreichen. Gemäß einer alternativen Ausführungsform ist die Atkorik zum Verlagern des Hubkolbens 4 entgegen dem in der Überdruckkammer 11 erzeugten Druck als Bestandteil der bogenverarbeitenden Maschine ausgebildet und dem Hubsauger 1 oder mehreren entsprechend ausgebildeten Hubsaugem 1 zugeordnet.In a preferred embodiment, the actuator system is formed as part of the Hubsaugers 1. In this case, the actuators may comprise, for example, a pneumatic, electric or electromagnetic actuator which acts on the reciprocating piston 4 at the further radial projection 39 with a force against the pressure force generated in the overpressure chamber 11. Thereby, it is possible to maintain the negative pressure in the negative pressure chamber 35 while the reciprocating piston 4 is moved upward. As a result, the in Figure 3D shown operating position of Hubsaugers 1 without reducing the compressed air flow and / or appropriately designed compression springs reach. According to an alternative embodiment, the atkorik is designed for displacing the reciprocating piston 4 against the pressure generated in the pressure chamber 11 as part of the sheet-processing machine and the lifting sucker 1 or more appropriately designed Hubsaugem 1 assigned.

Insgesamt erlaubt der vorteilhafte Hubsauger 1 beziehungsweise die den Hubsauger 1 aufweisende Maschine 2 ein schnelles und sicheres Vereinzeln von Bögen, insbesondere von Papierbögen, wobei das axiale Verfahren allein durch den Hubkolben 4 und das Springelement 4 erfolgt, ohne dass der gesamte Hubsauger 1 axial verlagert werden müsste, um einen erfassten Bogen anzuheben beziehungsweise um die Saugfläche 8 dem Bogen zuzuführen.Overall, the advantageous Hubsauger 1 and the lifting sucker 1 having machine 2 allows a quick and safe separation of sheets, especially paper sheets, the axial process is carried out solely by the reciprocating 4 and the spring element 4, without the entire Hubsauger 1 are axially displaced would have to raise a detected sheet or to supply the suction surface 8 to the sheet.

Claims (15)

Hubsauger (1) für eine bogenverabeitende Maschine (2), mit einem Gehäuse (3), das einen Druckluftanschluss für eine Druckluft bereitstellende Einrichtung aufweist, und mit einem hülsenförmigen Unterdruckerzeuger (20), der einen axialen Einlass (21), einen axialen Auslass (22) sowie mindestens eine radiale Saugöffnung (23) aufweist, wobei der Druckluftanschluss (5) mit dem Einlass (21) wirkverbunden ist, so dass dem Druckluftanschluss (5) zugeführte Druckluft den Unterdruckerzeuger (20) axial durchströmt, wobei die radiale Saugöffnung (23) mit einem eine Saugfläche (8) für einen zu verarbeitenden Bogen bildenden Springelement (7) wirkverbunden ist, dadurch gekennzeichnet, dass der Druckluftanschluss (5) auch mit einer Überdruckkammer (11) wirkverbunden ist, die von dem Gehäuse (3) und einem axial verschiebbar gelagerten Hubkolben (4) derart gebildet wird, dass der das Springelement (7) tragende Hubkolben (4) durch die Beaufschlagung der Überdruckkammer (11) mit Druckluft relativ zu dem Gehäuse (3) axial verlagerbar ist.A lifting suction device (1) for a sheet-processing machine (2), comprising a housing (3) having a compressed air connection for a device providing compressed air, and a sleeve-shaped vacuum generator (20) having an axial inlet (21), an axial outlet (2). 22) and at least one radial suction opening (23), wherein the compressed air connection (5) with the inlet (21) is operatively connected, so that the compressed air connection (5) supplied compressed air flows through the vacuum generator (20) axially, wherein the radial suction opening (23 ) with a suction surface (8) for a sheet to be processed forming spring element (7) is operatively connected, characterized in that the compressed air connection (5) is also operatively connected to a pressure chamber (11) of the housing (3) and an axial slidably mounted reciprocating piston (4) is formed such that the spring element (7) carrying the reciprocating piston (4) by the application of the pressure chamber (11) with compressed air r relative to the housing (3) is axially displaceable. Hubsauger nach Anspruch 1, dadurch gekennzeichnet, dass die Überdruckkammer (11) dem Einlass (21) des Unterdruckerzeugers (20) vorgeschaltet ist.Hoover according to claim 1, characterized in that the overpressure chamber (11) is connected upstream of the inlet (21) of the vacuum generator (20). Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Unterdruckerzeuger (20) in den Hubkolben (4) integriert angeordnet ist.Hoover according to one of the preceding claims, characterized in that the vacuum generator (20) in the reciprocating piston (4) is arranged integrated. Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Hubkolben (4) eine axiale Aufnahme (19) aufweist, die über einen Radialkanal (27) mit der Überdruckkammer (11) verbunden ist, wobei in der Aufnahme (19) der Unterdruckerzeuger (20) insbesondere koaxial liegt.Hoover according to one of the preceding claims, characterized in that the lifting piston (4) has an axial receptacle (19), which via a radial channel (27) with the pressure chamber (11) is connected, wherein in the receptacle (19) of the vacuum generator (20) is in particular coaxial. Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwischen der Aufnahme (19) und dem Unterdruckerzeuger (20) abschnittsweise ein Ringraum (25) gebildet ist, der über mindestens einen Verbindungskanal (26) mit dem Springelement (7) wirkverbunden ist.Hoover according to one of the preceding claims, characterized in that between the receptacle (19) and the vacuum generator (20) sections an annular space (25) is formed, which is operatively connected via at least one connecting channel (26) with the spring element (7). Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Verbindungskanal (26) in eine Unterdruckkammer (35) mündet, die von einem Ende des Hubkolbens (4) und dem darin axial verlagerbar angeordneten Springelement (7) gebildet ist.Hoover according to one of the preceding claims, characterized in that the connecting channel (26) opens into a vacuum chamber (35) formed by one end of the lifting piston (4) and the axially displaceable spring element (7). Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Hubkolben (4) einen sich zumindest im Wesentlichen über seinen Umfang erstreckenden und der Überdruckkammer (11) zugeordneten Radialvorsprung (28) aufweist.Lifting suction according to one of the preceding claims, characterized in that the lifting piston (4) has a at least substantially over its circumference extending and the pressure chamber (11) associated radial projection (28). Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Radialvorsprung (28) und/oder die Überdruckkammer (11) derart ausgebildet sind, dass die Druckluft an dem Radialvorsprung (28) vorbei gelangt.Hoover according to one of the preceding claims, characterized in that the radial projection (28) and / or the pressure chamber (11) are designed such that the compressed air passes the radial projection (28) over. Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Radialvorsprung (28) auf der dem Springelement (7) abgewandten Seite eine größere Axialfläche (29) aufweist als auf der dem Springelement (7) zugewandten Seite.Hoover according to one of the preceding claims, characterized in that the radial projection (28) on the spring element (7) facing away from a larger axial surface (29) than on the spring element (7) facing side. Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwischen dem Radialvorsprung (28) und dem Gehäuse (3), insbesondere auf der dem Radialkolben (28) zugeordneten Seite eine erste Druckfeder axialwirkend angeordnet ist.Hoover according to one of the preceding claims, characterized in that between the radial projection (28) and the housing (3), in particular on the radial piston (28) associated side, a first compression spring is arranged axially acting. Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zwischen dem Springelement (7) und dem Hubkolben (4) eine zweite Druckfeder axialwirkend angeordnet ist.Lifting suction according to one of the preceding claims, characterized in that between the spring element (7) and the reciprocating piston (4), a second compression spring is arranged axially acting. Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Hubsauger (1) Mittel (38) zum Verlagern des Hubkolbens (4) entgegen dem in der Übdruckkammer (11) erzeugten Druck aufweist.Hoover according to one of the preceding claims, characterized in that the lifting sucker (1) has means (38) for displacing the lifting piston (4) against the pressure generated in the overpressure chamber (11). Hubsauger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass dem Druckluftanschluss (5) ein betätigbares Ventil zum Einstellen eines Druckluftstroms zugeordnet ist.Hoover according to one of the preceding claims, characterized in that the compressed air connection (5) is associated with an actuatable valve for adjusting a compressed air flow. Bogenverarbeitende Maschine (2), insbesondere zum Vereinzeln von Papierbögen, mit wenigstens einer Druckluft bereitstellenden Einrichtung sowie mit mindestens einem Hubsauger (1), der einen mit der Druckluft bereitstellenden Einrichtung verbundenen Druckluftanschluss (5) aufweist, sowie einen von der Druckluft axial durchströmbaren Unterdruckerzeuger (20), der wenigstens eine radiale Saugöffnung (23) umfasst, die einer Saugfläche (8) eines Springelements (7) des Hubsaugers (1) zugeordnet ist, gekennzeichnet durch die Ausbildung des Hubsaugers (1) nach einem oder mehreren der vorhergehenden Ansprüche.Sheet-processing machine (2), in particular for separating sheets of paper, with at least one compressed air supply device and with at least one lifting sucker (1) having a device providing compressed air connected to the compressed air connection (5), as well as an axially flowed through by the compressed air vacuum generator ( in 20) comprising at least one radial suction port (23) which is associated with a suction surface (8) of a spring element (7) of the Hubsaugers (1), by the construction of the lifting sucker (1) according to one or more of the preceding claims. Bogenverarbeitende Maschine nach Anspruch 14, dadurch gekennzeichnet, dass zwischen dem Druckluftanschluss (5) und der Druckluft bereitstellenden Einrichtung ein betätigbares Ventil zwischengeschaltet ist.Sheet-processing machine according to claim 14, characterized in that between the compressed air connection (5) and the device providing compressed air, an actuatable valve is interposed.
EP10013684.5A 2010-10-15 2010-10-15 Lifting sucker for a sheet processing machine, sheet processing machine Not-in-force EP2441714B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013013214A1 (en) * 2013-08-09 2015-02-12 Logos-Innovationen Gmbh "Apparatus for recovering water from atmospheric air"
DE102016203171B3 (en) * 2016-02-29 2017-06-29 Festo Ag & Co. Kg suction holding
CN107499978A (en) * 2017-08-30 2017-12-22 如皋市双亚环保科技有限公司 A kind of movable vacuum cup component
CN109661364A (en) * 2016-08-12 2019-04-19 曼罗兰纸张有限责任公司 Lateral paper aligning system

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Publication number Priority date Publication date Assignee Title
GB716791A (en) * 1951-06-06 1954-10-13 Linotype Machinery Ltd Improvements in or relating to apparatus for use in separating sheets
JPH0342432A (en) * 1989-04-14 1991-02-22 Maeda Masaki Adsorbing tool
DE4324552A1 (en) * 1993-07-22 1995-01-26 Roland Man Druckmasch Pull (forwarding) sucker
DE19901341A1 (en) * 1999-01-15 2000-07-27 Roland Man Druckmasch Air control and / or air control device
EP1484142A1 (en) * 2003-06-02 2004-12-08 Thomas Kirner Suction pick-up apparatus with a cylinder- piston arrangement for generating vacuum

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB716791A (en) * 1951-06-06 1954-10-13 Linotype Machinery Ltd Improvements in or relating to apparatus for use in separating sheets
JPH0342432A (en) * 1989-04-14 1991-02-22 Maeda Masaki Adsorbing tool
DE4324552A1 (en) * 1993-07-22 1995-01-26 Roland Man Druckmasch Pull (forwarding) sucker
DE19901341A1 (en) * 1999-01-15 2000-07-27 Roland Man Druckmasch Air control and / or air control device
DE19901341B4 (en) 1999-01-15 2005-07-21 Man Roland Druckmaschinen Ag Air control and / or air control device
EP1484142A1 (en) * 2003-06-02 2004-12-08 Thomas Kirner Suction pick-up apparatus with a cylinder- piston arrangement for generating vacuum

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013013214A1 (en) * 2013-08-09 2015-02-12 Logos-Innovationen Gmbh "Apparatus for recovering water from atmospheric air"
US9945102B2 (en) 2013-08-09 2018-04-17 Logos-Innovationen Gmbh Device for extracting water from atmospheric air
DE102016203171B3 (en) * 2016-02-29 2017-06-29 Festo Ag & Co. Kg suction holding
CN109661364A (en) * 2016-08-12 2019-04-19 曼罗兰纸张有限责任公司 Lateral paper aligning system
CN107499978A (en) * 2017-08-30 2017-12-22 如皋市双亚环保科技有限公司 A kind of movable vacuum cup component

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