US20050258591A1 - Device and method to accelerate and separate as well as spatially align blanks, especially envelope blanks - Google Patents

Device and method to accelerate and separate as well as spatially align blanks, especially envelope blanks Download PDF

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Publication number
US20050258591A1
US20050258591A1 US11/136,018 US13601805A US2005258591A1 US 20050258591 A1 US20050258591 A1 US 20050258591A1 US 13601805 A US13601805 A US 13601805A US 2005258591 A1 US2005258591 A1 US 2005258591A1
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US
United States
Prior art keywords
cylinder body
stop
entraining
lateral surface
suction air
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.)
Abandoned
Application number
US11/136,018
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English (en)
Inventor
Martin Blumle
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.)
Winkler and Duennebier GmbH
Original Assignee
Winkler and Duennebier GmbH
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Publication date
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Assigned to WINKLER + DUNNEBIER AKTIENGESELLSCHAFT reassignment WINKLER + DUNNEBIER AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BLUMLE, MARTIN
Publication of US20050258591A1 publication Critical patent/US20050258591A1/en
Abandoned legal-status Critical Current

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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
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/14—Retarding or controlling the forward movement of articles as they approach stops
    • 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
    • B65H3/10—Suction rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/22—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device
    • B65H5/222—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices
    • B65H5/226—Feeding articles separated from piles; Feeding articles to machines by air-blast or suction device by suction devices by suction rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/002—Registering, e.g. orientating, articles; Devices therefor changing orientation of sheet by only controlling movement of the forwarding means, i.e. without the use of stop or register wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/06—Movable stops or gauges, e.g. rising and falling front stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/103—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop
    • B65H9/105—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop using suction means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/442—Moving, forwarding, guiding material by acting on edge of handled material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/443—Moving, forwarding, guiding material by acting on surface of handled material
    • B65H2301/4433—Moving, forwarding, guiding material by acting on surface of handled material by means holding the material
    • B65H2301/44336—Moving, forwarding, guiding material by acting on surface of handled material by means holding the material using suction forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B65H2513/11—Speed angular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/20—Acceleration or deceleration

Definitions

  • the present invention concerns a device and a method to accelerate and separate as well as spatially align (regulate) blanks, especially envelope blanks in an envelope manufacturing machine.
  • envelopes is to be understood as letter envelopes as well as shipping envelopes of all kinds.
  • Blanks according to this invention can also be label blanks, e.g. for bottle labels, or lid labels for food container lids.
  • label blanks e.g. for bottle labels, or lid labels for food container lids.
  • machines of the other kind process into envelopes a material or paper web wound on a supply reel.
  • the material web is drawn directly from this supply reel into the machine and cut to size at a suitable site in the processing route by a trim cut device so that the envelope blanks only arise within the letter envelope manufacturing machine.
  • Such machines are termed reel machines.
  • the individual processing stations work at a common cycle causing the envelope blanks or material web to be processed to pass through the envelope manufacturing machine at a corresponding speed, i.e. the cycle speed, so that they reach the respective station always at the right time (on cycle.)
  • the envelope blanks run through most stations separately, i.e. on the corresponding conveyance devices at a distance corresponding to the cycle.
  • the transport devices normally transport the envelope blanks at a speed less than the general cycle speed of the envelope manufacturing machine.
  • the envelope blanks After they pass through such stations, it is therefore necessary for the envelope blanks to be separated and accelerated to the cycle speed, i.e. brought in to time with the cycle of the envelope manufacturing machine so that they can be fed at the correct speed and at the correct time to the following stations such as a folding station to fold the seal flap.
  • the re-separated envelope blanks are arranged on the corresponding transport device in a correct spatial alignment or spatial position (regulated) so that they can be correctly and precisely processed in the following additional processing stations.
  • Segmented cylinders or acceleration cylinders feeding a vacuum are for example used as the acceleration device. Both types of cylinders are familiar to experts, and the latter is for example known from DE 26 28 809 A1.
  • a vacuum acceleration cylinder rotates at an angular velocity such that the web speed of the lateral surface corresponds to the cycle speed of the envelope manufacturing machine and grips the shingled envelope blanks or stacked blank sheets from above or below by vacuum-fed suction air holes.
  • the envelope blank or blank sheet contacting the cylinder in this manner is suddenly accelerated to the cycle speed and then transferred by the vacuum cylinder to the separate, downstream regulation device.
  • Known regulation devices are in particular regulating wheels as for example described in DE 196 09 991 A1, as well as regulating chains.
  • the device according to the invention to accelerate and spatially align blanks has at least one stop cylinder body with a stop element as well as an entraining transport device to entrain the blanks relative to the stop cylinder body.
  • the lateral surface of the stop cylinder body has at least one vacuum air hole.
  • the entraining transport device must permit slip between its transport elements and the blanks as soon as the latter are in their aligned or regulated position.
  • Such an entraining transport device is in particular an entraining cylinder body that preferably rotates on the same axis as the stop cylinder body and has at least one suction air hole in its lateral surface to hold the blanks. It is alternately conceivable to design the entraining transport device as a suction belt transport device that can hold the blanks with suctioned surrounding air just like the vacuum-feedable entraining cylinder body.
  • Another alternative for the entraining transport device consists of a conveyor belt device that does not work with suction air, for example in the form of at least two essentially stacked conveyor belts that can hold the blanks between them like a sandwich due to the frictional locking and also permit slip as soon as the respective blank is in the aligned position.
  • the basis is that plurality of stacked or shingled blanks are separated or accelerated and regulated by the method according to the invention. According to invention, only a single device is used with at least one stop cylinder body that has at least one stop element, as well as an entraining transport device.
  • the entraining transport device can for example be an entraining cylinder body provided with suction air openings, a suction belt transport device, a conveyor belt device with at least two interacting conveyor belts between which the blanks can be entrained, or the like.
  • this invention will be explained with reference to an entraining cylinder body as the entraining transport device.
  • both the basic function of the entraining cylinder body supplied with suction air exists in other entraining transport devices, the following statements also apply to these other entraining transport devices.
  • Vacuum-supplied suction air holes in the lateral surface of the stop cylinder body first place a blank from a plurality of shingled or stacked blanks on the lateral surface of the stop cylinder body and accelerate it to its web speed.
  • the blank to be separated is drawn to the lateral surface of the stop cylinder body by the suction through the suction air holes, and it is held on the lateral surface of the stop cylinder body by this suction. Disregarding a brief slip phase, the blank to be separated is hence suddenly accelerated to the web speed of the lateral surface of the stop cylinder body.
  • the entire surface of the blank does not lie on the lateral surface of the stop cylinder body; rather, it covers at least a significant area of the lateral surface of the neighboring entraining cylinder body on the same shaft as the stop cylinder body.
  • the web speed of the lateral surface of the entraining cylinder body differs from the web speed of the lateral surface of the stop cylinder body such that after the blank is placed on the lateral surface of the stop cylinder body, the lateral surface of the entraining cylinder body first glides below the area of the blank covering the lateral surface of the entraining cylinder body.
  • the blank is then placed on the lateral surface of the entraining cylinder body by the vacuum-fed suction air openings in the lateral surface of the entraining cylinder body, i.e., held by the lateral surface of the entraining cylinder body by suction.
  • the blank is either braked or accelerated when it is placed on the lateral surface of the entraining cylinder body depending on which of the two web speeds is greater.
  • the blank is not necessary for the blank to be held free of slip on the lateral surface of the entraining cylinder body, i.e., it is not necessary for the blank to be completely accelerated to the web speed of the lateral surface of the entraining cylinder body.
  • the blank By placing the blank on the lateral surface of the entraining cylinder body, the blank is caused to move relative to the stop cylinder body as a function of the two web cylinder skates in or against the direction of travel of the stop cylinder body. According to the invention, this relative movement moves the blank into a stop position in which it lies on the stop element of the stop cylinder body.
  • the blank is spatially aligned as it is placed on the stop element.
  • the blank Once the blank reaches its stop position, the blank cannot move further relative to the stop cylinder body, and the blank then moves at the web speed of the stop cylinder body, i.e., at the cycle speed.
  • the vacuum fed to the suction air openings of the entraining cylinder body is controlled so that its suction air openings are inactive when the blank is placed on the lateral surface of the stop cylinder body, i.e., not supplied with a vacuum, and without suction. This can ensure that placing the blank on the lateral surface of the stop cylinder body will not be impaired by possible suction from the suction air openings of the entraining cylinder body.
  • the suction air openings of the entraining cylinder body to exert suction when the blank is placed on the lateral surface of the stop cylinder body. In this case, however, it should be noticeably less than the suction of the suction air openings of the stop cylinder body.
  • the suction air openings in the lateral surface of the stop cylinder body are preferably inactive during these procedures, i.e., not supplied with a vacuum, and therefore having a suction.
  • the suction air openings of the entraining cylinder body are preferably inactive, i.e., not supplied with a vacuum so that they do not provide suction after the blank has reached the stop position, i.e., lies on the stop element. This ensures that the blank is not pressed against the stop with a corresponding force by the continued movement of the entraining cylinder body which could damage the front contact edge of the blank.
  • the blank After the blank is regulated by being placed on the stop element of the stop cylinder body, the blank can then be passed on in a familiar manner to a following processing or transport station.
  • the web speed of the stop cylinder body preferably corresponds to the speed at which the blank is to be transferred by the vacuum cylinder to this station that normally corresponds to the cycle speed of the envelope manufacturing machine.
  • the vacuum cylinder according to the invention comprises two stop cylinder bodies and an entraining cylinder body, whereby the entraining cylinder body is on a common shaft with all cylinder bodies between the two stop cylinder bodies, whereby the three lateral surfaces of the cylinder bodies preferably form an essentially continuous and contiguous overall lateral surface.
  • the cylinder bodies are preferably joined together such that the two stop cylinder bodies can be rotated synchronously, i.e. at the same angular velocity and at a specific angle in relation to each other on a common shaft.
  • the entraining cylinder body can contrastingly be driven independent of the stop cylinder bodies and is especially rotated on the shaft at an angular velocity that differs from the angular velocity of the stop cylinder bodies. Because the cylinder bodies essentially have the same diameter, the different angular velocities yield different web speeds of the lateral surfaces of the different cylinder bodies.
  • the blank is supplied so that its middle area covers the lateral surface of the entraining cylinder body, and its two-sided areas cover areas of the corresponding lateral surfaces of the two entraining cylinder bodies.
  • At least one stop cylinder body can have a plurality of stop elements. These are distributed over the circumference of the lateral surface of the stop cylinder body, preferably at equivalent angular distances.
  • stop cylinder body it is particularly preferable for the stop cylinder body to have to diametrically opposing stop elements on its lateral surface.
  • a stop cylinder body is also conceivable with three, four or more stop elements that are at an angular distance of 120°, 90°, or at a correspondingly lesser regular angular distance from each other on the lateral surface of the stop cylinder body.
  • the stop element is preferably formed by a cam projecting radially from the lateral surface of the stop cylinder body.
  • This cam has a stop surface possessing at least one section lying in a radial plane of the stop cylinder body. Stated otherwise, the stop surface has at least one section that is perpendicular on the lateral surface of the stop cylinder body. In this embodiment, the separated blank lies on this stop surface section after regulation.
  • the axial length of the stop element is preferably less than the axial extension of the lateral surface of the stop roller body and normally does not project axially beyond this lateral surface. This is especially true with the above-portrayed embodiment with two stop cylinder bodies and an intermediate entraining cylinder body.
  • the stop element projects axially beyond the lateral surface of the stop cylinder body and accordingly covers a part of the lateral surface of the entraining cylinder body abutting the stop cylinder body in this case. This can ensure correct alignment in this case as well, and due to the different web speed of the lateral surface of the entraining cylinder body, the blank will not tilt or twist on its vertical axis on the stop element.
  • the stop element does not influence the rotation of the entraining cylinder body.
  • the stop element it would be conceivable in this case for the stop element to not contact the lateral surface of the entraining cylinder body, but rather be at a slight radial distance from this lateral surface so that the entraining cylinder body can pass without contact under the stop element.
  • the radial distance between the stop element and the lateral surface of the entraining cylinder body must be set small enough so that a blank lying on the lateral surface of the entraining cylinder body can be placed on the area of the stop element over the lateral surface of the entraining cylinder body.
  • the stop element of the stop cylinder body can be shifted in an actual direction relative to its lateral surface. This can be advantageous for changes in format when the device according to the invention is to be adapted to blanks with different widths.
  • the suction air openings of the stop cylinder body preferably do not extend over its entire lateral surface, but rather in sections over an area of the lateral surface of the stop cylinder body neighboring the respective stop element.
  • the area of the suction air openings of the stop cylinder body is before or behind the stop element in reference to the rotational direction of the stop cylinder body by a specific angular area that can depend on the size of the respective blank.
  • the area of the suction air holes of the stop cylinder body lies within a definite angle before or after the stop element in reference to the rotational direction of the stop cylinder body.
  • the angle in which the area of the suction air openings in the lateral surface of the stop cylinder body lies with reference to the stop element is selected such that the path along which the separated blank must be moved for regulation (i.e., the circumferential distance to the stop surface of the stop element) is very slight. Accordingly, the area of the suction air openings preferably lies directly adjacent to the respective stop element, i.e., at an angle of 0° to 60° measured from the stop surface of the stop element.
  • the extension of the area of the suction air holes over the circumference in the lateral surface of the stop cylinder body is selected so that the blank is sufficiently drawn to the lateral surface of the stop cylinder element by the section from the suction air holes both before and after being regulated to compensate for the centrifugal and aerodynamic forces acting on the blank.
  • the entraining cylinder body moves at a different web speed than the stop cylinder body when the inventive vacuum cylinder is operating.
  • the suction air openings of the entraining cylinder body preferably extend over the entire circumference of its lateral surface.
  • the suction air openings of the stop cylinder body and/or the entraining cylinder body can be shut off when the cylinder bodies rotate at least over a specific circular arc, i.e., they can be changed to a state in which they are not fed a vacuum and do not exert suction. This is done in a familiar manner by controlling the vacuum acting on the respective suction air holes.
  • stop elements projecting from the lateral surfaces of the stop cylinder bodies from damaging the lateral surfaces of adjacent vacuum cylinders
  • design the stop elements from an elastically deformable material.
  • the stop elements could also be designed, for example using a corresponding spring system, so that they can be selectively moved during rotation into a radially retracted position in which they are flush with the metal surfaces.
  • FIG. 1 shows a side view of a stop cylinder body of an embodiment of a device according to the invention in an envelope manufacturing machine
  • FIG. 2 shows a side view of an entraining cylinder body of an embodiment of a device according to the invention in an envelope manufacturing machine
  • FIG. 3 shows a schematic front view of an embodiment of a device according to the invention with the stop cylinder body and entraining cylinder body shown in FIG. 1 and FIG. 2 .
  • the embodiment of the device according to the invention portrayed in the following to accelerate and spatially align blanks can for example be used to manufacture envelopes after an adhesive drying station.
  • the device designed as a vacuum cylinder 1 in this embodiment comprises two disc-shaped stop cylinder bodies 1 a and 1 b, as well as a disc-shaped entraining cylinder body 2 .
  • the cylinder bodies 1 a, 1 b 2 are all rotatably mounted on a common shaft A.
  • the entraining cylinder body 2 is between the two stop cylinder bodies 1 a and 1 b.
  • the blanks can be accelerated and separated as well as spatially aligned according to the invention with a single vacuum cylinder 1 in this embodiment.
  • the two stop cylinder bodies 1 a and 1 b rotate synchronized at the same angular velocity and at a specific position in relation to each other when the vacuum cylinder I according to the invention is operating, and the stop elements 12 a, 12 b are axially colinear.
  • the rotation of the entraining cylinder body 2 is independent of the rotation of the stop cylinder bodies 1 a and 1 b.
  • FIG. 1 shows a cross-section of the stop cylinder body 1 a of the vacuum cylinder 1 installed in an envelope manufacturing machine.
  • the stop cylinder body 1 b is correspondingly constructed.
  • the stop cylinder body 1 a in this embodiment has two stop elements 12 a that are diametrically opposed on the lateral surface 10 a of the stop cylinder body 1 a in the form of cams projecting out of the lateral surface 10 a.
  • the stop elements 12 a all have a stop surface 120 a that stands essentially perpendicular on the lateral surface 10 a of the stop cylinder body 1 a.
  • suction air openings 11 a there are two rows of suction air openings 11 a in the lateral surface 10 a of the stop cylinder body 1 a neighboring the stop surface 120 a of the stop elements 12 a. These suction air openings 11 a are selectively supplied with a vacuum via corresponding suction air channels 110 a by means of device (not shown) in a familiar manner.
  • device not shown
  • FIG. 2 shows the entraining cylinder body 2 of this embodiment of the vacuum cylinder 1 according to convention. This has suction air openings 21 over the entire circumference of its lateral surface 20 that can be selectively fed a vacuum through corresponding suction air channels 210 , and that are in three neighboring rows running in an axial direction in FIG. 3 .
  • FIGS. 1 and 2 show the rotational direction R of the cylinder bodies 1 a, 1 b, 2 at the respective web speeds v 1 and v 2 of the stop cylinder body 1 a and the entraining cylinder body 2 of the respective lateral surfaces 10 a and 20 during operation.
  • the vacuum cylinder 1 During operation, the vacuum cylinder 1 according to the intention is fed shingled blanks 30 by a feed device 5 .
  • the first blank 300 is placed on the lateral surfaces 10 a, 10 b by the suction through the vacuum-supplied suction air holes 11 a, 11 b in the lateral surfaces 10 a, 10 b of the stop cylinder bodies 1 a, 1 b in areas in the lateral surfaces 10 a and 10 b, and the blank is hence suddenly accelerated to the web speed v 1 of the stop cylinder bodies 1 a, 1 b.
  • FIG. 3 shows the state directly after the separated blank 3 is placed on the lateral surfaces 10 a, 10 b.
  • the lateral surfaces 20 of the entraining cylinder body 2 moving at a higher web speed v 2 pass under the area of the blank 3 that it overlaps since the corresponding suction air holes 21 into lateral surface 20 of the entraining cylinder body 2 are controlled so that they exert a substantially lower suction than the suction air openings 11 a, 11 b of the stop cylinder bodies 1 a and 1 b, or no suction at all.
  • the blank 3 is not yet correctly spatially aligned, i.e., its advanced front edge 31 does not lie on the contact surfaces 120 a and 120 b of the stop element 12 a and 12 b.
  • the blank 3 is transferred by the stop cylinder bodies 1 a, 1 b to the entraining cylinder body 2 when the suction of the suction air holes 11 a, 11 b in the lateral surfaces 10 a, 10 b of the stop cylinder bodies 1 a, 1 b is reduced by correspondingly controlling the vacuum, or even decreased to zero while the suction of the suction air openings 21 in the lateral surface 20 of the entraining cylinder body 2 is retained or even increased.
  • the blank 3 sucked onto the lateral surface 20 of the entraining cylinder body 2 executes a relative movement in relation to the lateral surfaces 10 a and 10 b of the stop cylinder bodies 1 a and 1 b from the web speed v 2 of the entraining cylinder body 2 that is larger than the web speed v 1 of the stop cylinder bodies 1 a, 1 b and is moved to the stop surfaces 120 a, 120 b of the stop elements 12 a, 12 b.
  • the blank As soon as the front edge 31 of the blank 3 contacts the corresponding stop surfaces 120 a and 120 b, the blank has reached its stop position, and is in the desired, correctly aligned position in which the front edge 31 is exactly parallel to the common axis A.
  • the suction generated by the suction air openings 21 of the entraining cylinder body 2 is set so that the blank 3 in its stop position is not pressed too strongly against the stop surfaces 120 a, 120 b due to the higher web speed v 2 of the entraining cylinder body 2 to prevent the blank 3 from being damaged.
  • the lateral surface 20 of the entraining cylinder body 2 can glide under the blank 3 in stop position.
  • the vacuum cylinder 4 After the blank 3 reaches its stop position, it can be transferred in a normal manner by a subsequent transport element, the vacuum cylinder 4 in this case. Since the blank 3 in stop position moves synchronous to the stop cylinder bodies 1 a and 1 b at the same web speed v 1 , this web speed v 1 corresponds to the cycle speed of the envelope manufacturing machine in this case, so that after being transferred to the vacuum transport cylinder 4 , the blank 3 does not need to be accelerated further.
  • the blank 3 After the blank 3 is regulated, it can be transferred by the entraining cylinder body 2 to the stop cylinder bodies 1 a and 1 b by turning on or increasing the suction of the corresponding suction air openings 11 a, 11 b by correspondingly controlling the vacuum. This ensures that the regulated blank 3 to be transferred to the vacuum transport cylinder 4 firmly lies on the lateral surfaces 10 a, 10 b of the stop cylinder bodies 1 a, 1 b.
  • the lateral surface 40 can for example be made from an elastically yielding material or be coated with such a material. It is, however, conceivable to design the stop elements 12 a, 12 b out of an elastically deformable material.
  • the stop elements 12 a, 12 b can also be designed for example by using a corresponding spring system so that they can be selectively moved during rotation into a radially retracted position in which they are flush with the lateral surfaces 10 a, 10 b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
US11/136,018 2004-05-24 2005-05-24 Device and method to accelerate and separate as well as spatially align blanks, especially envelope blanks Abandoned US20050258591A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004025427.3 2004-05-24
DE102004025427A DE102004025427A1 (de) 2004-05-24 2004-05-24 Vorrichtung und Verfahren zum Beschleunigen bzw. Vereinzeln sowie zum räumlichen Ausrichten (Regulieren) von Zuschnitten, insbesondere Briefhüllenzuschnitten

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US20050258591A1 true US20050258591A1 (en) 2005-11-24

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US (1) US20050258591A1 (fr)
EP (1) EP1600410A1 (fr)
JP (1) JP2005335953A (fr)
DE (1) DE102004025427A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090139838A1 (en) * 2006-04-04 2009-06-04 Winkler + Duennebier Ag Apparatus and method for spatially orienting blanks
US20090188606A1 (en) * 2006-01-30 2009-07-30 Toyo Tire & Rubber Co., Ltd. Method and apparatus of adhering and building belt member

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US3998449A (en) * 1975-06-30 1976-12-21 F. L. Smithe Machine Company, Inc. Method and apparatus for feeding items from a stack
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JP2005335953A (ja) 2005-12-08
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