US3917259A - Stepped rear strap for bottom feed separators - Google Patents

Stepped rear strap for bottom feed separators Download PDF

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Publication number
US3917259A
US3917259A US468390A US46839074A US3917259A US 3917259 A US3917259 A US 3917259A US 468390 A US468390 A US 468390A US 46839074 A US46839074 A US 46839074A US 3917259 A US3917259 A US 3917259A
Authority
US
United States
Prior art keywords
stack
sheets
rear stop
front gauge
feeding
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.)
Expired - Lifetime
Application number
US468390A
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English (en)
Inventor
Gennaro Salvade
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.)
Bobst Mex SA
Original Assignee
J Bobst et Fils SA
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 J Bobst et Fils SA filed Critical J Bobst et Fils SA
Application granted granted Critical
Publication of US3917259A publication Critical patent/US3917259A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/38—Delivering or advancing articles from machines; Advancing articles to or into piles by movable piling or advancing arms, frames, plates, or like members with which the articles are maintained in face contact
    • B65H29/46—Members reciprocated in 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
    • B65H31/00—Pile receivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B65H2701/1762—Corrugated

Definitions

  • ABSTRACT A rear stop for a device for feeding sheets one at a time from a stack of sheets with the feeding device comprising a frame supporting a front gauge, front and rear stack supports and the rear stop, means for shifting the leading edges of each of the sheets against the front gauge and means reciprocated between a pair of positions for feeding the lowermost sheet of a stack beneath the front gauge characterized by the rear stop being mounted for vertical movement in the frame and the stop having a plurality of abutment surfaces disposed at different levels so the rear stop has a stair step cross-sectional configuration.
  • a preferred embodiment of the rear stop is formed by a stack of plates which are arranged to form the stair step configuration. In order to provide different spacing between the abutments, the thicknesses of the plates of the stack may be different.
  • the present invention is concerned with a sheet stopping device which is located in a feeding device for corrugated or solid board sheets.
  • the feeding device includes a front gauge which coacts with the stop and other structure to form a means for receiving a stack of sheets and a reciprocating feeding head for feeding the lowermost sheet of a stack beneath the front gauge.
  • each of the sheets in the stack may have a different length.
  • a rear shuttle which has a plurality of flat sheets or pins for engaging the rear edge of each of the sheets.
  • the pins or fiat sheets are resiliently carried in the shuttle which is reciprocated from a withdrawn position which allows downward movement of the sheet to a position of engagement with the stack to shift all of the sheets againstthe front gauge or stop.
  • the present invention is directed to a device which insures accurate registry for each sheet of a stack as it is being fed from a feeding device and is introduced into a processing machine.
  • the feeding device comprises a frame supporting a front gauge, front and rear stack supports and a rear stop to define means to receive a stack of sheets, means for shifting a leading edge of each of the sheets against the front gauge, and means reciprocated between a pair of positions for feeding the lowermost sheet of the stack beneath the front gauge with the improvements comprising means for mounting the rear stop in the frame for vertical movement relative to the front gauge and the rear stop having a plurality of spaced abutment surfaces each disposed at different levels to provide the rear stop with a stair step cross-sectional configuration so that during a return stroke of the feeding means a rear edge of the lowermost sheet of the stack is engaged on one of the abutment surfaces which prevents shifting of the lowermost sheet from its aligned position relative to the front gauge.
  • the stair step crosssection Preferably, the stair step crosssection
  • FIG. 1 is a cross-sectional view of a sheet feeding unit or device equipped with a stopping device according to the present invention
  • FIG. 2 is a view taken along II-II of FIG. 1;
  • FIG. 3 is an enlarged front view of the rear stop of the present invention.
  • FIG. 4 is a cross-sectional view taken along lines IV-IV of FIG. 3.
  • the principles of the present invention are particularly useful in a sheet feeding device for delivering a sheet 1 from a stack 2 one at a time into a gripper 3 of a conveying device 4 of a machine which perfonns subsequent operations on the sheet.
  • the feeding device has a frame which supports a rear stop 7, a front gauge 10, a pair of spaced front supports or guides 11 and a pair of side guides 11.
  • the device further includes means for feeding the lowermost sheet beneath the front gauge 10 into the gripper 3 which means is illustrated as a suction head 5 carried by means generally indicated by a box 5 for reciprocating it from a forward position illustrated in bold lines to a withdrawn position whichis beneath the stack 2 and is illustrated in chain lines adjacent the front supports 1 l.
  • the stack 2 is composed of a plurality of sheets which have different lengths or dimensions.
  • the feeding device includes means for shifting each sheet which means is illustrated as a pair of rotating brushes8 (FIG. 2) that'en gage the trailing edge of each sheet and which brushes are carried on shafts extending from a pair of motors 9 which are mounted on the frame of the device by appropriate structure.
  • the next lower sheet 6 is received on the stop 7 and is also supported by a pair of spaced arms or supports 12 and 13 (FIG. 2).
  • the arms 12 and 13 are carried by a shaft 14 which extends between the pair of frame members 15 and 16 of the device.
  • the rear stop 7 is formed by a support member 22 which is provided with a pair of rollers 24 on each end. Each roller 24 is mounted by a bearing on screw 23 which attaches the roller to the support 22.
  • a stack of individual plates or sheets 30 are held on the support 22 by screws 27, 28 and 29. The screws 27 and 29 also hold support blocks 31.
  • Each of the plates or sheets 30 extend in a vertical plane and has a different width so that each plate has an exposed surface portion adjacent its upper edge to form an abutment surface with each abutment surface being at a different level to provide a stairstep configuration for the rear stop 7.
  • Each of the plates or sheets 30 can have different thicknesses so that the distance between adjacent abutment surfaces is varied.
  • the stop 7 is mounted on the frame for vertical movement relative to the front gauge 10.
  • the means for mounting the stop comprises a pair of upstanding frame members 17 and 18 which have grooves 25 and 26 which form slides for receiving the rolls 24 on the ends of the support member 22.
  • the front support blocks 31 of the stop 7 ride on rollers carried on arms 19 and 20 which arms are adjustably connected to the shaft 14. A rotation of the shaft 14 will raise and lower the stop 7 in the slides relative to the front gauge 10.
  • a table or plate 21 extends across the top of the upstanding frame members 17 and 18.
  • the table 21 provides a flat surface which facilitates loading the means for receiving the stack 2.
  • the position of the rear stop 7 can be shifted vertically so that the lowermost sheet such as 6 is in the desired position for a subsequent feeding operation.
  • the vertical shifting of the stop 7 is accomplished by rotation of the shaft 14. If it is desired to automatically shift the vertical position of the stop 7 to maintain the sheets flat on the guide 11, the rotation of the shaft 14 can be accomplished by an electric motor which is controlled by sensing means located adjacent the front guide or support 1 1. A detailed description of the sensing means and control circuit for a motor to rotate the shaft is given in the above-mentioned U.S. Pat. No. 3,715,116 and this description is hereby incorporated by reference thereto.
  • the rear stop 7 with a plurality of spaced abutment surfaces prevents shifting of the sheet such as 6 away from its alignment with the front gauge during the return stroke of the suction head 5.
  • the rear stop 7 insures the accurate registry of each sheet of the stack 2 as it is being fed from the device.
  • the low profile of the stop facilities loading additional sheets into the stack 2 of the feeding device.
  • a device for feeding sheets one at a time from a stack of sheets comprising a frame supporting a front gauge, front and rear stack supports and a rear stop to define means for receiving a stack of sheets, means for shifting a leading edge of each of the sheets against the front gauge and means reciprocated between a pair of positions for feeding the lowermost sheet of the stack beneath the front gauge, the improvements comprising said rear stop having a plurality of spaced abutment surfaces, each disposed at different levels to provide the rear stop with a stair step crosssectional configuration, and means for mounting said rear stop in the frame for vertical movement relative to the front gauge with the abutment surfaces moving in substantially vertical planes so that during a return stroke of the feeding means, a rear edge of the lowermost sheet of the stack is engaged on one of. the abutment surfaces which prevents shifting of the lowermost sheet from its aligned position relative to the front gauge.
  • the rear stop is formed by a stack of plates which are arranged with their edges forming the stair step configuration.
  • each of the plates has a different width.
  • the device comprising a frame supporting a front gauge, front and rear stack supports and a rear stop to define means for receiving a stack of sheets, means for shifting a leading edge of each of the sheets against the front gauge and means reciprocated between a pair of positions for feeding the lowermost sheet of the stack beneath the front gauge, the improvements comprising means for mounting said rear stop in the frame for vertical movement relative to the front gauge and said rear stop being a stack of plates with each plate of the stack being disposed in a vertical 1 plane and having an upper edge extending to a different level'to expose a portion of the surface adjacent the upper edge of the next adjacent plate to provide a plurality of spaced abutment surfaces each disposed at different levels to provide the rear stop with a stair step cross-sectional configuration so that during a return stroke of the feeding means, a rear edge of the lowermost sheet of the stack is engaged on one of the abutment surfaces which prevents shifting of the lowermost sheet from its aligned position relative to the front gauge.
  • each of the'plates has a difierent thickness so that the spacing between adjacent abutments is different.
  • a device for feeding sheets one at a time froma stack of sheets comprising a frame supporting a front gauge, front and rear stack supports and a rear stop to define means for receiving a stack of sheets, means for shifting a leading edge of each of the sheets against the front gauge and means reciprocated between a pair of positions for feeding the lowermost sheet of the stack beneath the front gauge, the improvements comprising means for mounting said rear stop in. the frame for vertical movement relative to the 7.
  • the rear stop is formed by a stack of plates which are arranged with their edges forming the stair step configuration.
  • each of the plates of the stacks is disposed in a vertical plane and each of the abutment surfaces is formed by a surface of the plate adjacent an edge thereof.
  • each of the plates has a different thickness so that the spacing between adjacent abutment surfaces is different.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Making Paper Articles (AREA)
US468390A 1973-06-21 1974-05-09 Stepped rear strap for bottom feed separators Expired - Lifetime US3917259A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH918973A CH563934A5 (enrdf_load_stackoverflow) 1973-06-21 1973-06-21

Publications (1)

Publication Number Publication Date
US3917259A true US3917259A (en) 1975-11-04

Family

ID=4349305

Family Applications (1)

Application Number Title Priority Date Filing Date
US468390A Expired - Lifetime US3917259A (en) 1973-06-21 1974-05-09 Stepped rear strap for bottom feed separators

Country Status (9)

Country Link
US (1) US3917259A (enrdf_load_stackoverflow)
JP (1) JPS5239538B2 (enrdf_load_stackoverflow)
CA (1) CA1003449A (enrdf_load_stackoverflow)
CH (1) CH563934A5 (enrdf_load_stackoverflow)
ES (1) ES427440A1 (enrdf_load_stackoverflow)
FR (1) FR2234222B1 (enrdf_load_stackoverflow)
GB (1) GB1419231A (enrdf_load_stackoverflow)
IT (1) IT1010643B (enrdf_load_stackoverflow)
SE (1) SE399388B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4328064A (en) * 1980-03-31 1982-05-04 Miller Jr Rex B Apparatus for shingling tickets
EP0178715A1 (en) * 1984-10-15 1986-04-23 Buhrs-Zaandam B.V. Separating device for sideways removing a publication from the lower side of a pile of publications
US4638749A (en) * 1986-04-10 1987-01-27 The Charles Stark Draper Laboratory, Inc. Automated system for sequentially loading lowermost segments from a shingled stack of limp material segments
US20070182084A1 (en) * 2005-11-07 2007-08-09 Roberto Marchetti Feed unit for feeding sheets to a packing line

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2839445B2 (ja) * 1994-07-29 1998-12-16 株式会社日光製作所 自動平盤打抜機
CN115924253A (zh) * 2022-12-29 2023-04-07 东莞市迈高自动化机械有限公司 一种取贴标一体化装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1281014A (en) * 1916-05-26 1918-10-08 Cox Multi Mailer Company Stencil-feeding mechanism.
US2902280A (en) * 1957-09-06 1959-09-01 S & S Corrugated Paper Mach Spring feeder for warped board
US3715116A (en) * 1970-10-20 1973-02-06 Bobst Fils Sa J Leveling device for sheet material feeding mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1281014A (en) * 1916-05-26 1918-10-08 Cox Multi Mailer Company Stencil-feeding mechanism.
US2902280A (en) * 1957-09-06 1959-09-01 S & S Corrugated Paper Mach Spring feeder for warped board
US3715116A (en) * 1970-10-20 1973-02-06 Bobst Fils Sa J Leveling device for sheet material feeding mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4328064A (en) * 1980-03-31 1982-05-04 Miller Jr Rex B Apparatus for shingling tickets
EP0178715A1 (en) * 1984-10-15 1986-04-23 Buhrs-Zaandam B.V. Separating device for sideways removing a publication from the lower side of a pile of publications
US4638749A (en) * 1986-04-10 1987-01-27 The Charles Stark Draper Laboratory, Inc. Automated system for sequentially loading lowermost segments from a shingled stack of limp material segments
US20070182084A1 (en) * 2005-11-07 2007-08-09 Roberto Marchetti Feed unit for feeding sheets to a packing line

Also Published As

Publication number Publication date
FR2234222B1 (enrdf_load_stackoverflow) 1978-06-16
JPS5021461A (enrdf_load_stackoverflow) 1975-03-07
SE7403971L (enrdf_load_stackoverflow) 1974-12-23
DE2420979A1 (de) 1975-01-09
DE2420979B2 (de) 1977-03-03
CH563934A5 (enrdf_load_stackoverflow) 1975-07-15
CA1003449A (en) 1977-01-11
JPS5239538B2 (enrdf_load_stackoverflow) 1977-10-05
IT1010643B (it) 1977-01-20
FR2234222A1 (enrdf_load_stackoverflow) 1975-01-17
ES427440A1 (es) 1976-07-16
SE399388B (sv) 1978-02-13
GB1419231A (en) 1975-12-24

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