GB2029375A - A Sheet Singling Apparatus - Google Patents

A Sheet Singling Apparatus Download PDF

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Publication number
GB2029375A
GB2029375A GB7927739A GB7927739A GB2029375A GB 2029375 A GB2029375 A GB 2029375A GB 7927739 A GB7927739 A GB 7927739A GB 7927739 A GB7927739 A GB 7927739A GB 2029375 A GB2029375 A GB 2029375A
Authority
GB
United Kingdom
Prior art keywords
sheet
sucker
conveying
stack
separating
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
GB7927739A
Other versions
GB2029375B (en
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.)
Polygraph Leipzig Kombinat Veb
Original Assignee
Polygraph Leipzig Kombinat Veb
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 Polygraph Leipzig Kombinat Veb filed Critical Polygraph Leipzig Kombinat Veb
Publication of GB2029375A publication Critical patent/GB2029375A/en
Application granted granted Critical
Publication of GB2029375B publication Critical patent/GB2029375B/en
Expired 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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • 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
    • B65H3/0816—Suction grippers separating from the top of pile
    • 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
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/48—Air blast acting on edges of, or under, articles
    • 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
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/54—Pressing or holding devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Radiography Using Non-Light Waves (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

A sheet-singling apparatus for use in sheet feeders on sheet-treating and sheet-processing machines comprises sheet-separating means (2), sheet- conveying means (3), sheet- holding-down means (5) and sheet- loosening means (4). The sheet- holding-down means (5) is constructed as a sucker device of one or more suckers arranged beside one another. Alternatively the means (2 and 5) move in a circular path and each act alternately as separating means and hold-down means. <IMAGE>

Description

SPECIFICATION Sheet Singling Apparatus The present invention relates to a sheet singling apparatus.
DD 11185 discloses a sheet singling apparatus comprising sheet conveying, sheetholding-down and sheet loosening devices.
The sheet conveying devices comprise separating suckers for the separation of the sheets from a stack and conveying suckers for the transporting of a sheet to a sheetprocessing machine.
The sheet-holding-down devices are constructed as so-called feeler-blowers which execute the functions of pressing down the sheet stack under the sheet to be conveyed to avoid conveying multiple sheets and blowing under the sheet to be conveyed.
The sheet-loosening devices for the loosening of the pressed-down sheet stack usually comprise blast systems arranged at the rear edge of the stack.
It is a disadvantage that the sheet stack under the sheet to be conveyed must first be compressed by the feeler-blower and later, to make sheetsingling possible, and again be loosened by means of the loosening-blower.
These contradictory operations require a great effort for the control of the individual devices and do not ensure exact sheet-singiing.
According to the present invention there is provided a sheet-singling apparatus comprising sheet conveying means, sheet holding-down means, and sheet loosening means, the sheet holding-down means comprising at least one sucker device comprising a sucker or a plurality of suckers disposed beside one another.
The sheet holding-down means may comprise two sucker devices arranged to operate in alternation.
The sucker devices may be adapted to act as a separating sucker device of the sheet conveying means.
An embodiment of the present invention will now be more particularly described by way of example and with reference to the accompanying drawing in which: Fig. 1 shows a sheet-singling apparatus with a sheet-holding-down device comprising a sucker system, and Fig. 2 shows sheet-singling apparatus with sucker system constructed as sheet-holdingdown device and separating sucker.
Referring to the accompanying drawings, apparatus shown in Fig. 1 for sheet-singling from a sheet stack 1, comprises a sheet-conveying system with separating suckers 2 and conveying suckers 3, a blower 4 acting as loosening means, and a sheet-holding-down device comprising a sucker system 5. The sucker system 5 comprises one or more suckers arranged beside one another.
The sheet to be conveyed is indicated by reference numeral 6.
Fig. 2 shows an embodiment comprising two sucker systems 5.1 and 5.2, operating alternatingly and executing the function of the separating sucker and the function of the sheetholding-down device, the conveying sucker 3 and the blower 4.
The directions of motion of the individual systems shown in the drawing are indicated by arrows.
The manner of operation of the apparatus is as follows: The sheet 6 to be conveyed is singled by means of the separating sucker 2 from the sheet stack 1, the uppermost sheet 7 of the sheet stack being sucked up by the sucker system 5 driven in and thereby held fast. The sheet 6 to be conveyed is taken over by the conveying suckers 3 and fed to a printing machine. The separating sucker 2 is lowered, it sucks up the next sheet 7 to be conveyed and separates it from the sheet stack 1 after it has been released by the sucker system 5.
The blower 4 at the rear edge of the stack preliminarily loosens the uppermost sheets of the sheet stack 1.
By omitting compression of the uppermost sheets, the functional operation of the sheetsingling equipment is improved and the sheetsingling apparatus can be more securely constructed.
In the variant embodiment shown in Fig 2, the sheet 6 to be conveyed is sucked up by means of the first sucker system 5.1 acting as a sheetholding-down device and a separating sucker, and guided upwardly and thereby separated from the sheet stack 1.
The second sucker system 5.2 acting as a sheet-holding-down device and separating sucker returns downwardly from the upper position on a curved track 8, sucks up the uppermost sheet 7 and thus prevents unintentional conveying thereof.
The sheet 6 to be conveyed is taken over by the conveying suckers 3 and fed in to the printing machine. The blower 4 at the rear edge of the stack preliminarily loosens the uppermost sheets of the sheet stack 1.
By omitting compression of the uppermost sheets, the functional operation of the sheetsingling apparatus is improved and the sheetsingling apparatus can be more securely constructed.
The motional course is further improved in that two systems operating alternatingly are employed.
Also a saving in means for sheet-singling arises through the function of the separating suckers being taken over by the sucker system operating alternatingly.
Claims
1. A sheet-singling apparatus comprising sheet conveying means, sheet holding-down means, and sheet loosening means, the sheet holdingdown means comprising at least one sucker device comprising a sucker or a plurality of suckers disposed beside one another.
2. An apparatus as claimed in claim 1, wherein
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Sheet Singling Apparatus The present invention relates to a sheet singling apparatus. DD 11185 discloses a sheet singling apparatus comprising sheet conveying, sheetholding-down and sheet loosening devices. The sheet conveying devices comprise separating suckers for the separation of the sheets from a stack and conveying suckers for the transporting of a sheet to a sheetprocessing machine. The sheet-holding-down devices are constructed as so-called feeler-blowers which execute the functions of pressing down the sheet stack under the sheet to be conveyed to avoid conveying multiple sheets and blowing under the sheet to be conveyed. The sheet-loosening devices for the loosening of the pressed-down sheet stack usually comprise blast systems arranged at the rear edge of the stack. It is a disadvantage that the sheet stack under the sheet to be conveyed must first be compressed by the feeler-blower and later, to make sheetsingling possible, and again be loosened by means of the loosening-blower. These contradictory operations require a great effort for the control of the individual devices and do not ensure exact sheet-singiing. According to the present invention there is provided a sheet-singling apparatus comprising sheet conveying means, sheet holding-down means, and sheet loosening means, the sheet holding-down means comprising at least one sucker device comprising a sucker or a plurality of suckers disposed beside one another. The sheet holding-down means may comprise two sucker devices arranged to operate in alternation. The sucker devices may be adapted to act as a separating sucker device of the sheet conveying means. An embodiment of the present invention will now be more particularly described by way of example and with reference to the accompanying drawing in which: Fig. 1 shows a sheet-singling apparatus with a sheet-holding-down device comprising a sucker system, and Fig. 2 shows sheet-singling apparatus with sucker system constructed as sheet-holdingdown device and separating sucker. Referring to the accompanying drawings, apparatus shown in Fig. 1 for sheet-singling from a sheet stack 1, comprises a sheet-conveying system with separating suckers 2 and conveying suckers 3, a blower 4 acting as loosening means, and a sheet-holding-down device comprising a sucker system 5. The sucker system 5 comprises one or more suckers arranged beside one another. The sheet to be conveyed is indicated by reference numeral 6. Fig. 2 shows an embodiment comprising two sucker systems 5.1 and 5.2, operating alternatingly and executing the function of the separating sucker and the function of the sheetholding-down device, the conveying sucker 3 and the blower 4. The directions of motion of the individual systems shown in the drawing are indicated by arrows. The manner of operation of the apparatus is as follows: The sheet 6 to be conveyed is singled by means of the separating sucker 2 from the sheet stack 1, the uppermost sheet 7 of the sheet stack being sucked up by the sucker system 5 driven in and thereby held fast. The sheet 6 to be conveyed is taken over by the conveying suckers 3 and fed to a printing machine. The separating sucker 2 is lowered, it sucks up the next sheet 7 to be conveyed and separates it from the sheet stack 1 after it has been released by the sucker system 5. The blower 4 at the rear edge of the stack preliminarily loosens the uppermost sheets of the sheet stack 1. By omitting compression of the uppermost sheets, the functional operation of the sheetsingling equipment is improved and the sheetsingling apparatus can be more securely constructed. In the variant embodiment shown in Fig 2, the sheet 6 to be conveyed is sucked up by means of the first sucker system 5.1 acting as a sheetholding-down device and a separating sucker, and guided upwardly and thereby separated from the sheet stack 1. The second sucker system 5.2 acting as a sheet-holding-down device and separating sucker returns downwardly from the upper position on a curved track 8, sucks up the uppermost sheet 7 and thus prevents unintentional conveying thereof. The sheet 6 to be conveyed is taken over by the conveying suckers 3 and fed in to the printing machine. The blower 4 at the rear edge of the stack preliminarily loosens the uppermost sheets of the sheet stack 1. By omitting compression of the uppermost sheets, the functional operation of the sheetsingling apparatus is improved and the sheetsingling apparatus can be more securely constructed. The motional course is further improved in that two systems operating alternatingly are employed. Also a saving in means for sheet-singling arises through the function of the separating suckers being taken over by the sucker system operating alternatingly. Claims
1. A sheet-singling apparatus comprising sheet conveying means, sheet holding-down means, and sheet loosening means, the sheet holdingdown means comprising at least one sucker device comprising a sucker or a plurality of suckers disposed beside one another.
2. An apparatus as claimed in claim 1, wherein the sheet holding-down means comprises two sucker devices arranged to operate in alternation.
3. An apparatus as claimed in claim 2, wherein the sucker device is adapted to act as a separating sucker device of the sheet conveying means.
4. A sheet-singling apparatus substantially as hereinbefore described with reference to Fig. 1 of the accompanying drawings.
5. A sheet-singling apparatus substantially as hereinbefore described with reference to Fig. 2 of the accompanying drawings.
GB7927739A 1978-08-22 1979-08-09 Sheet singling apparatus Expired GB2029375B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD20739978A DD138182B1 (en) 1978-08-22 1978-08-22 ARCH SEPARATING DEVICE

Publications (2)

Publication Number Publication Date
GB2029375A true GB2029375A (en) 1980-03-19
GB2029375B GB2029375B (en) 1982-11-17

Family

ID=5514094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7927739A Expired GB2029375B (en) 1978-08-22 1979-08-09 Sheet singling apparatus

Country Status (7)

Country Link
JP (1) JPS5531795A (en)
CS (1) CS220562B1 (en)
DD (1) DD138182B1 (en)
DE (1) DE2919616A1 (en)
GB (1) GB2029375B (en)
SE (1) SE7906968L (en)
SU (1) SU1025627A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451028A (en) * 1981-11-27 1984-05-29 Xerox Corporation Sheet feeding apparatus
US4589647A (en) * 1984-11-29 1986-05-20 Xerox Corporation Top vacuum corrugation feeder with a valveless feedhead
CN114013736A (en) * 2021-12-02 2022-02-08 丽荣鞋业(深圳)有限公司 Shoe packing paper feeding device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4218203A1 (en) * 1992-06-03 1993-12-09 Kolbus Gmbh & Co Kg Sorting out individual sheets from stacking magazine - using blow nozzle to produce air jet to separate double sheet through rail supporting sheet stack

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451028A (en) * 1981-11-27 1984-05-29 Xerox Corporation Sheet feeding apparatus
US4589647A (en) * 1984-11-29 1986-05-20 Xerox Corporation Top vacuum corrugation feeder with a valveless feedhead
CN114013736A (en) * 2021-12-02 2022-02-08 丽荣鞋业(深圳)有限公司 Shoe packing paper feeding device

Also Published As

Publication number Publication date
SU1025627A1 (en) 1983-06-30
DE2919616A1 (en) 1980-03-06
SE7906968L (en) 1980-02-23
DD138182B1 (en) 1981-08-26
CS220562B1 (en) 1983-04-29
GB2029375B (en) 1982-11-17
DD138182A1 (en) 1979-10-17
JPS5531795A (en) 1980-03-06

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PCNP Patent ceased through non-payment of renewal fee