GB1577213A - Apparatus for removing an element from a stream of overlapping elements - Google Patents

Apparatus for removing an element from a stream of overlapping elements Download PDF

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Publication number
GB1577213A
GB1577213A GB2366878A GB2366878A GB1577213A GB 1577213 A GB1577213 A GB 1577213A GB 2366878 A GB2366878 A GB 2366878A GB 2366878 A GB2366878 A GB 2366878A GB 1577213 A GB1577213 A GB 1577213A
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United Kingdom
Prior art keywords
conveyor
flap
stream
carriage
counter
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
Application number
GB2366878A
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Grapha Holding AG
Original Assignee
Grapha Holding AG
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
Priority to CH676877A priority Critical patent/CH617636A5/en
Application filed by Grapha Holding AG filed Critical Grapha Holding AG
Publication of GB1577213A publication Critical patent/GB1577213A/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58Article switches or diverters

Abstract

The device serves for transferring elements of an overlapping stream (5), in particular of printed sheets, from a first conveyor run (1) having a stage to a second conveyor run (12) branching off at the stage (4). The second conveyor run has a part (19) which is movable in an inclined manner with respect to the stage (4) and away therefrom. In order that the printed sheets can be reliably removed even at high speeds of the first conveyor run, the part (19) assumes its resting position in the lower end position in which it terminates at a distance from the stage (4) and outside the range of action of the first conveyor run (1). On the lower end of the part (19), a flap (37) is articulatedly mounted, which, when the part (19) is in the lower end position, can be pivoted into and out of the range of action (6) of the first conveyor run (1). <IMAGE>

Description

(54) APPARATUS FOR REMOVING AN ELEMENT FROM A STREAM OF OVERLAPPING ELEMENTS (71) We, GRAPHA-HOLDING AG, a Swiss Company, of Seestrasse, CH-6052 Hergiswil, Switzerland, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to an apparatus for removing elements from a stream of overlapping elements, and has particular though not exclusive application to the removal of paper sheets from a stream of overlapping paper sheets.

Known apparatus of this type is described in, for example, West German Offenlegungschrift 2346898 and comprises first conveyor means including a step therein down which the stream is fed in its passage along said means, and a second conveyor means branching off at the step and including a portion which can move obliquely towards and away from said step. In its foremost position, the lower end of the movable portion of the second conveyor means extends into the path of movement of the stream on the first conveyor means and one or more successive sheets are taken from the first conveyor means into the movable portion of the second conveyor means depending upon the length of time the movable portion is kept in its foremost position. Said portion then moves obliquly upwards away from the step to its rearmost position and draws the engaged sheet or sheets from the first conveyor means.

In such apparatus, when it is desired to withdraw a sheet from the first conveyor means, the entire movable portion of the second conveyor means is moved from its upper end or rearmost position, which is its rest position, downwardly and forwardly into the stream of overlapping sheets on the first conveyor means, which sheets open out partly at the step, said movable portion then being immediately returned to said rest position. The movable portion must be of a stable construction because of the considerable forces acting on it. As a result it is of considerable weight and inertia and the time required for forward movement from the rest position into the foremost position, therefore, cannot be adjusted precisely.

Further, as the output of modern rotary newsprint printing machines is so great- the interval between two conservative newspaper is 50/1000 sec-it will be understood that known apparatus is too clumsy to be used to take a single copy out of the rapidly travelling stream of sheets.

However, in practice, it is often necessary to take certain copies (for example the twenty-first, the sixty-ninth, seventieth and seventy-first) out of a stream of 'overlapping copies and to feed these printed sheets to an inspection department or to a special further processing stage.

According to the present invention there is provided apparatus for removing an element from a stream of overlapping elements, the apparatus comprising first conveyor means including a step therein down which the stream is fed in its passage along said means, second conveyor means including a portion movable towards and away from said step between a rest position spaced from the step and out of the path of movement of the stream on the first conveyor means and a displaced position further spaced from said step, and flap means pivotally mounted on the second conveyor means, said flap means, with said portion in its rest position, being pivotable into and out of the path of movement of the stream on the first conveyor means in the region of said step whereby an element of said stream can be transferred by the flap means from the first conveyor means to the second conveyor means.

The second conveyor means may further include a pair of co-operating endless conveyor belt systems between which an element transferred from the first conveyor means by the flap means is fed to be transported by said systems from said flap means, said portion of the second conveyor means comprising a carriage movable within a fixed frame.

Preferably each endless conveyor belt system passes around a plurality of guide rollers some of which are mounted on, to be movable with, the carriage and some of which are mounted on the fixed frame, the arrangement being such that, once an element is fed between the two endless conveyor belt systems by the flap means, the carriage is moved from its rest position to its displaced position, the linear speed of the conveyor belt systems being greater than the speed at which the carriage moves from its rest position to jts displaced position.

Conveniently movement of the carriage is achieved by a double-acting pistoncylinder assembly reacting between the carriage and the fixed frame, while pivoting movement of the flap means may be achieved by a double-acting piston-cylinder assembly reacting between the rnovable portion of the second conveyor means and the flap means.

By way of example only an embodiment of the invention will now be described in greater detail with reference to the accompanying diagrammatic drawings of which: Fig. 1 is a section on the line I-I of Fig.

2 of apparatus according to the invention Fig. 2 is a plan view of the apparatus of Fig. 1 with certain parts omitted, and Fig. 3 is a flow diagram of the apparatus shown in Figs. 1 and 2.

Referring to the drawings, first conveyor means are indicated generally at 1 and comprise two conveyor belts 2 and 3 which are set at different heights with a step 4 being formed therebetween. A stream of overlapping paper sheets 5 is transported along the conveyor means 1 and over the step 4 in the direction of the arrow shown in Fig. 1. The individual printed sheets tilt when they reach the step 4, with their leading edges falling downwards, so that a space 6 is formed between a tilted-over printed sheet and the following sheet.

A sensing element 8 of a counting head 9 is spaced a distance 7 from the step 4, said element engaging into the path of movement of the sheets on the conveyor mans 1. The counting head 9 is mounted on a pivotable lever 10 which is supported by rollers 11 running on the stream of overlapping articles 5 such that the sensing element 8 is operated by the leading edges of the consecutive printed sheets to produc counting pulses.

A second conveyor means indicated generally at 12 branches off obliquely upwards from the first conveyor means 1 adjacent the step 4. The second conveyor means 12 comprise apparatus indicated generally at 13 which is intended to divert specific printed sheets or a series of specific printed sheets from the stream 5 of the first conveyor means 1 to the second conveyor means 12. The apparatus 13 comprises a machine stand 14 which is provided with two lateral bearing plates 15 and 16. Guide rods 17 and 18 are secured to the inside faces of the bearing plates 15, 16 respectively. A carriage 19 is mounted on the guide rods 17, 18 to be capable of displacement in an oblique direction upwards and downwards along said rods. A double acting piston-cylinder assembly 21 is mounted on the machine stand 14, the cylinder of said assembly being pivotally connected to a crossmember 20 of said stand and the free end of the piston rod of said assembly being pivotally connected to a cross-member 22 of the carriage 19. When the pistoncylinder assembly 21 is acted upon in alternate directions, the carriage 19 is moved up and down in the aforesaid direction along the guide rods 17 and 18.

Guide rollers are arranged on shafts 23, 24 on the carriage 19 and on shafts 25, 26 and 27 on the machine stand 14, two parallel endless belts 28 being guided over said rollers. Said belts 28 together form an upper conveyor belt arrangement.

Further guide rollers are mounted on shafts 29, 30 on the carriage 19 and on shafts 31, 32 and 33 on the machine stand 14. Two parallel endless belts 34 extend over said rollers to form a lower conveyor belt system. The upper and lower conveyor belt systems have two parallel runs which contact one another and move in the same direction from the lower left to the upper right as seen in Fig. 1. The upper and lower conveyor belt systems are driven by a drive 35 through a drive chain 36 which acts on the shafts 27 and 33.

A flap 37 is pivotally mounted on the shaft 29 at the lower end of the carriage 19. A double-acting piston-cylinder assembly 38 is mounted with the free end of its piston rod pivotally connected to the flap 37 and with its cylinder pivotally mounted at 39 to the carriage 19. When the piston cylinder assembly 38 is operated in alternate directions with a pressure medium, it swings the flap 37 between upper and lower end positions shown in full and dot-dash lines respectively- in Fig. 1.

In the upper end position, shown in full lines, the flap 37 is situated outside the path of movement of the sheets on the first conveyor means 1. In the lower end position shown in dot-dash lines, the flap 37 extends into the path of movement of the sheets on the conveyor means 1 and engages in the space 6 which is formed at the step 4 between two successive printed sheets.

If a printed sheet is to be diverted from the stream of sheets 5 on the first conveyor means 1 to the second conveyor means 12, the flap 37 is swung from the upper end position into the lower end position. The printed sheet slides obliquely upwards along the flap 37 such that its leading end is engaged by the upper and lower conveyor belt systems 28 and 34, said sheet then being carried away obliquely upwards.

As soon as the leading edge of the printed sheet to be transferred is between the conveyor belt systems 28 and 34, the carriage 19 is also moved upwards by operation of the piston cylinder assembly 21. The linear speed of the conveyor belt systems 28 and 34 must be greater than the upward speed of the carriage 19. In this way the printed sheet is taken out of the stream 5. At the beginning of the upward movement of the carriage 19, or shortly afterwards, the flap 37 is swung upwards by operation of the piston-cylinder assembly 38. As soon as the printed sheet removed from the stream 5 has been transferred to a subsequent conveyor belt 40 of the second conveyor means 12, the piston-cylinder assembly 21 is again operated and the carriage 19 is moved downwards into its rest position so that the apparatus is ready for taking out a further printed sheet.

An important feature of the apparatus described above is that the carriage 19, in its position of readiness for taking out a printed sheet, is in its lower end position so that, for deliberate removal of a printed sheet, it is simply necessary to lower the flap 37 by operating the piston-cylinder assembly 38, the flap not having much mass and therefore having very little inertia.

The small mass of the flap 37 makes it possible to lower the flap substantially instantaneously into its lower end position in which it extends into the path of movement of the sheets on the first conveyor means 1 into the space 6.

Fig. 3 shows a flow diagram for the above-described apparatus.

Referring to Fig. 3, counting pulses ZJ are fed from the counting head 9 to a shift register SR1. Said register SR1 conducts the counting pulses, with a time delay, to a counter Z1 and to a counter Z2. The delay in the shift register SR1 corresponds to the length of time which the printed sheets take to travel over the distance 7 of the first conveyor means for the sensing element 8 to the step 4.

The counter Z is provided with a manual or a magnetic tape preselector. The counter Z1 determines the individual printed sheet or the first of a group of printed sheets to be separated out from the stream 5. When the carriage 19 is in its lower end position, the triggering signal of the counter Z1 releases a control signal for operating the piston-cylinder assembly 38 such that the flap 37 is swung from its upper end position into its lower end position. The counter Z1 can also be replaced by a manually operated key or by a demand signal as indicated in broken lines in Fig.

3 or the key can be provided near the counter Z1. At the same time the counter Z2 is set, either manually or magnetically, to the preselected number of sheets to be removed from the stream 5, for example 15.

It is possible to use a "demand no" signal in conjunction with a " demand yes " signal instead of counter Z2. The effect of the " demand no " signal is that the taking out of the printed sheets is immediately discontinued. When the counter Z2 is at zero, the counter Z1 is set for example at 25. The output signal of the counter Z2 operates the piston-cylinder assembly 21 and the carriage 19 is moved upwards. As soon as the carriage 19 has reached its upper end position the piston-cylinder assemblies 21 and 38 are again operated so that the carriage 19 is moved forwards and the flap 31 is swung into its upper end position. With the setting of the counter Z1 by the counter Z2 the cycle of operaions described is repeated.

The ability precisely to separate out specific printed sheets makes it possible to use apparatus according to the invention to divide a stream of overlapping sheets coming from a rotary printing machine.

Division of output may be necessary if the stream of sheets has to be distributed over a plurality of cutting machines or if individual printed sheets have to be fed from the stream of sheets for sending to a special treatment stage. Apparatus according to the inventoin can be used for taking out from a stream defective printed copies which occur when there is a change of roller in the rotary printing machine. The apparatus can also be used to sort various printed products arriving on a conveyor belt and which are identified by a reading apparatus, etc.

WHAT WE CLAIM IS: - 1. Apparatus for removing an element from a stream of overlapping elements, the apparatus comprising first conveyor means including a step therein down which the stream is fed in its passage along said means, second conveyor means including a portion movable towards and away from

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    path of movement of the sheets on the first conveyor means 1. In the lower end position shown in dot-dash lines, the flap 37 extends into the path of movement of the sheets on the conveyor means 1 and engages in the space 6 which is formed at the step 4 between two successive printed sheets.
    If a printed sheet is to be diverted from the stream of sheets 5 on the first conveyor means 1 to the second conveyor means 12, the flap 37 is swung from the upper end position into the lower end position. The printed sheet slides obliquely upwards along the flap 37 such that its leading end is engaged by the upper and lower conveyor belt systems 28 and 34, said sheet then being carried away obliquely upwards.
    As soon as the leading edge of the printed sheet to be transferred is between the conveyor belt systems 28 and 34, the carriage 19 is also moved upwards by operation of the piston cylinder assembly 21. The linear speed of the conveyor belt systems 28 and 34 must be greater than the upward speed of the carriage 19. In this way the printed sheet is taken out of the stream 5. At the beginning of the upward movement of the carriage 19, or shortly afterwards, the flap 37 is swung upwards by operation of the piston-cylinder assembly 38. As soon as the printed sheet removed from the stream 5 has been transferred to a subsequent conveyor belt 40 of the second conveyor means 12, the piston-cylinder assembly 21 is again operated and the carriage 19 is moved downwards into its rest position so that the apparatus is ready for taking out a further printed sheet.
    An important feature of the apparatus described above is that the carriage 19, in its position of readiness for taking out a printed sheet, is in its lower end position so that, for deliberate removal of a printed sheet, it is simply necessary to lower the flap 37 by operating the piston-cylinder assembly 38, the flap not having much mass and therefore having very little inertia.
    The small mass of the flap 37 makes it possible to lower the flap substantially instantaneously into its lower end position in which it extends into the path of movement of the sheets on the first conveyor means 1 into the space 6.
    Fig. 3 shows a flow diagram for the above-described apparatus.
    Referring to Fig. 3, counting pulses ZJ are fed from the counting head 9 to a shift register SR1. Said register SR1 conducts the counting pulses, with a time delay, to a counter Z1 and to a counter Z2. The delay in the shift register SR1 corresponds to the length of time which the printed sheets take to travel over the distance 7 of the first conveyor means for the sensing element 8 to the step 4.
    The counter Z is provided with a manual or a magnetic tape preselector. The counter Z1 determines the individual printed sheet or the first of a group of printed sheets to be separated out from the stream 5. When the carriage 19 is in its lower end position, the triggering signal of the counter Z1 releases a control signal for operating the piston-cylinder assembly 38 such that the flap 37 is swung from its upper end position into its lower end position. The counter Z1 can also be replaced by a manually operated key or by a demand signal as indicated in broken lines in Fig.
    3 or the key can be provided near the counter Z1. At the same time the counter Z2 is set, either manually or magnetically, to the preselected number of sheets to be removed from the stream 5, for example 15.
    It is possible to use a "demand no" signal in conjunction with a " demand yes " signal instead of counter Z2. The effect of the " demand no " signal is that the taking out of the printed sheets is immediately discontinued. When the counter Z2 is at zero, the counter Z1 is set for example at 25. The output signal of the counter Z2 operates the piston-cylinder assembly 21 and the carriage 19 is moved upwards. As soon as the carriage 19 has reached its upper end position the piston-cylinder assemblies 21 and 38 are again operated so that the carriage 19 is moved forwards and the flap 31 is swung into its upper end position. With the setting of the counter Z1 by the counter Z2 the cycle of operaions described is repeated.
    The ability precisely to separate out specific printed sheets makes it possible to use apparatus according to the invention to divide a stream of overlapping sheets coming from a rotary printing machine.
    Division of output may be necessary if the stream of sheets has to be distributed over a plurality of cutting machines or if individual printed sheets have to be fed from the stream of sheets for sending to a special treatment stage. Apparatus according to the inventoin can be used for taking out from a stream defective printed copies which occur when there is a change of roller in the rotary printing machine. The apparatus can also be used to sort various printed products arriving on a conveyor belt and which are identified by a reading apparatus, etc.
    WHAT WE CLAIM IS: - 1. Apparatus for removing an element from a stream of overlapping elements, the apparatus comprising first conveyor means including a step therein down which the stream is fed in its passage along said means, second conveyor means including a portion movable towards and away from
    said step between a rest position spaced from the step and out of the path of movement of the stream on the first conveyor means and a displaced position further spaced from said step, and flap means pivotally mounted on the second conveyor means, said flap means, with said portion in its rest position, being pivotable into and out of the path of movement of the stream on the first conveyor means in the region of said step whereby an element of said stream can be transferred by the flap means from the first conveyor means to the second conveyor means.
  2. 2. Apparatus as claimed in claim 1 in which the second conveyor means further includes a pair of co-operating endless conveyor belt systems between which an element transferred from the first conveyor means by the flap means is fed to be transported by said systems from said flap means, said portion of the second conveyor means comprising a carriage movable within a fixed frame.
  3. 3. Apparatus as claimed in claim 2 in which each endless conveyor belt system passes around a plurality of guide rollers some of which are mounted on, to be movable with, the carriage and some of which are mounted on the fixed frame, the arrangement being such that, once an element is fed between the two endless conveyor belt systems by the flap means, the carriage is moved from its rest position to its displaced position, the linear speed of the conveyor belt systems being greater than the speed at which the carriage moves from its rest position to its displaced position.
  4. 4. Apparatus as claimed in claim 2 or claim 3 in which movement of the carriage is achieved by a double-acting pistoncylinder assembly reacting between the carriage and the fixed frame.
  5. 5. Apparatus as claimed in any one of claims 1 to 4 in which pivoting movement of the flap means is achieved by a doubleacting piston-cylinder assembly reacting between the movable portion of the second conveyor means and the flap means.
  6. 6. Apparatus for removing an element from a stream of overlapping elements, the apparatus being substantially as described with reference to and as illustrated by the accompanying drawings.
GB2366878A 1977-06-02 1978-05-26 Apparatus for removing an element from a stream of overlapping elements Expired GB1577213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH676877A CH617636A5 (en) 1977-06-02 1977-06-02 Delivery device

Publications (1)

Publication Number Publication Date
GB1577213A true GB1577213A (en) 1980-10-22

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ID=4314733

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2366878A Expired GB1577213A (en) 1977-06-02 1978-05-26 Apparatus for removing an element from a stream of overlapping elements

Country Status (4)

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JP (1) JPS543767A (en)
CH (1) CH617636A5 (en)
DE (1) DE2820957A1 (en)
GB (1) GB1577213A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH700152A1 (en) * 2008-12-24 2010-06-30 Ferag Ag Apparatus and method for separating a stream of conveyed objects.

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH641118A5 (en) * 1979-10-23 1984-02-15 Grapha Holding Ag Branching device for a shed flow.
CH659053A5 (en) * 1982-11-02 1986-12-31 Grapha Holding Ag Device for dividing products delivered in the domestic flow.
DE3465177D1 (en) * 1983-02-02 1987-09-10 Sft Ag Spontanfoerdertechnik Device and method for removing and diverting a sample from a stream of overlapping printed articles
JP2594520B2 (en) * 1987-04-22 1997-03-26 大日本印刷株式会社 Printing book extracting method and apparatus
DE3807807A1 (en) * 1988-03-10 1989-09-21 Philips Patentverwaltung OFFICE MACHINE, e.g. PRINTER
DE3807808A1 (en) * 1988-03-10 1989-09-21 Philips Patentverwaltung OFFICE MACHINE, e.g. PRINTER
DE3807809A1 (en) * 1988-03-10 1989-09-21 Philips Patentverwaltung OFFICE MACHINE, e.g. PRINTER
EP0417621B1 (en) * 1989-09-13 1993-09-08 Ferag AG Method and means for pressing folded printed products
DE59009088D1 (en) * 1989-09-13 1995-06-22 Ferag Ag Method and device for transporting printed products in scale formation.
EP0417620B1 (en) * 1989-09-13 1995-06-21 Ferag AG Method and device for handling overlapping printed articles
DE3940243C2 (en) * 1989-12-05 1994-01-20 Gaemmerler Hagen Device for supplying a stream of sheet materials which is conveyed in a scale formation
DE59105103D1 (en) * 1990-10-04 1995-05-11 Ferag Ag Device for selectively transferring products from a scale formation transported along a first conveying path to a second conveying path.
CH685938A5 (en) * 1992-07-08 1995-11-15 Daverio Ag C O Grapha Holding About device for cartloads of conditions required in the scale flow pressure products.
CH686829A5 (en) * 1992-12-04 1996-07-15 Grapha Holding Ag Device for transferring individual printed products of a stream of shingles.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE366713B (en) * 1972-09-21 1974-05-06 Ahlen & Akerlunds Forlags Ab

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH700152A1 (en) * 2008-12-24 2010-06-30 Ferag Ag Apparatus and method for separating a stream of conveyed objects.
WO2010072007A1 (en) 2008-12-24 2010-07-01 Ferag Ag Separating a flow of conveyed objects

Also Published As

Publication number Publication date
CH617636A5 (en) 1980-06-13
DE2820957A1 (en) 1978-12-07
JPS543767A (en) 1979-01-12

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