EP0328875A2 - Procédé et dispositif de séparation d'articles plans - Google Patents

Procédé et dispositif de séparation d'articles plans Download PDF

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Publication number
EP0328875A2
EP0328875A2 EP19890100563 EP89100563A EP0328875A2 EP 0328875 A2 EP0328875 A2 EP 0328875A2 EP 19890100563 EP19890100563 EP 19890100563 EP 89100563 A EP89100563 A EP 89100563A EP 0328875 A2 EP0328875 A2 EP 0328875A2
Authority
EP
European Patent Office
Prior art keywords
stack
flat parts
support
separating
parts
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
EP19890100563
Other languages
German (de)
English (en)
Other versions
EP0328875A3 (en
EP0328875B1 (fr
Inventor
Wilhelm Reil
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
Tetra Alfa Holdings 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 Tetra Laval Holdings and Finance SA, Tetra Alfa Holdings SA filed Critical Tetra Laval Holdings and Finance SA
Priority to AT89100563T priority Critical patent/ATE103570T1/de
Publication of EP0328875A2 publication Critical patent/EP0328875A2/fr
Publication of EP0328875A3 publication Critical patent/EP0328875A3/de
Application granted granted Critical
Publication of EP0328875B1 publication Critical patent/EP0328875B1/fr
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
    • B65H3/00—Separating articles from piles
    • B65H3/24—Separating articles from piles by pushers engaging the edges of the 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
    • B65H3/30—Separating articles from piles by escapement devices; from staggered piles; from piles of articles having staggered formations, e.g. cuts or perforations

Definitions

  • the invention relates to a method and also a device for separating flat parts, in particular blanks from paper, cardboard or the like for the production of packs, in which the flat parts lie one above the other in a stack.
  • the invention relates to separation from one to five, e.g. three flat parts and generally relates to the separation of the flat parts, the invention is described below for better understanding and for better presentation using blanks of paper, cardboard or the like for the production of liquid packs.
  • Paper is known to be a compliant material, even if it is coated with plastic. Now stack the blanks on top of each other and store them several months before processing in the packaging machine, i.e. before separating and unfolding, it has been shown that the individual flat parts (e.g. the cut pieces) stick to one another and make their separation considerably more difficult due to their mutual stiction.
  • the invention is therefore based on the object of providing a method for separating flat parts and a device by means of which flat parts, in particular paper blanks, can be reliably separated from a stack, even when the stack is fed automatically.
  • This object is achieved for the method in that the stack of flat parts is supported approximately horizontally lying on opposite edges, the bottom part is shifted horizontally on one side so far over the first support of one side until it has lost support and hanging cantilevered, and then being pushed away from the first support and falling.
  • a sliding movement is provided according to the invention, in which the flat part is brought into engagement at the edge and is displaced essentially horizontally, not via a force effect (the friction) but, so to speak, positively via a stop.
  • the stacking height of the flat parts is now made very large, so that, for example, a large number of parts can be accommodated in a magazine and kept in stock, it can happen that the weight of the parts lying above the lowest flat part causes such great static friction that it cannot be guaranteed with certainty that only a single part (e.g. a single blank made of paper) will be gripped and loosened during the horizontal sliding movement, but that two or even three flat parts will be gripped together and pushed aside and pushed aside and thus from the Stacks are separated.
  • a single part e.g. a single blank made of paper
  • the flat parts separated from a first, for example upper, stack are fed to a downstream second, for example arranged below, stack and subsequently separated by the latter.
  • a pre-separation takes place, so to speak, although the word "separation" can be inapplicable if, in the above-described disadvantageous manner, the weight of the very high stack cannot prevent two or three or even stick four flat parts together and separate them from the stack.
  • the method according to the invention overcomes this problem by this so-called pre-separation or separation in the first or so-called upper station.
  • the weight of the flat parts or the stack plays a significant role both in the method and in the device according to the invention, which is why "top” and “bottom” are used.
  • an essential vertical component is included. Even with an inclined stack of flat parts, one can speak from above and below.
  • this two-stage process in this embodiment of the invention has the further advantage that the lower stack is preferably only allowed to grow to a height of 20 to 30 flat parts and, in other words, only then is it possible to separate further parts from the first upper stack when the bottom stack does not get higher than the desired maximum height.
  • At least two stacks of flat parts lying one above the other are supported approximately horizontally lying on opposite edges, at least one lower part of the upper stack is horizontally displaced on one side so far beyond the first support of one side until it is opposite has lost support and is cantilevered, and then reversed from the first support is pushed and falls onto the lower stack, of which the lowest part is separated in the same way.
  • the height of the stack of the parts to be separated is sensed and a further stack is fed when the stack reaches a minimum height.
  • This measure serves to rationalize the manufacture of packs, namely when machines are being built in which only stacks of blanks are set and finished packs are removed filled. With the rationalized, automatic machines in particular, a large stack height is desirable because then the loading times are shortened.
  • This stack height can be sensed in various ways known per se.
  • a new full stack can also be fed in after a stack has been used up, as in the two-step process in which the feeding of a full new stack then naturally takes place in the upper position. It goes without saying that the sensor for the stack height Gives a signal to a controller with which the further new stack is fed.
  • the stacks of flat parts are moved on approximately horizontal tracks for separation and / or separation in a position inclined to the vertical.
  • the stack of flat parts After the stack of flat parts has been unloaded, for example into the magazines of a buffer feed device, it has proven to be advantageous to loosen the flat parts from one another within a stack simply by deforming the stack when it is inclined against the vertical. It can be particularly expedient here if the stack is inclined from the vertical in two directions lying approximately perpendicular to one another. This is the best way to break the static friction between the individual parts within the stack.
  • the upper flat parts of a stack are displaced by the inclination described here in the running direction of the feed device, for example by 15 ° against the running direction and by an equally large or different angle in the plane perpendicular to the running direction. If one moves the upper part in the feed direction to the rear and also to one side in a stack from bottom to top, then the described inclination results, the stack then geometrically taking the form of a parallelepiped in the form of a prism, the bases of which are parallelograms. If the stack is exactly vertical, then it can be geometrically called a cuboid, if it is inclined in the sense of the invention, then it has the shape of a prism with parallelograms as the base areas.
  • a device for separating flat parts, in particular blanks from paper, cardboard or the like for the production of packs in which the flat parts lie one above the other in a stack.
  • the object is achieved according to the invention in that at the lower end two each at a distance the width of the flat parts of the attached housing walls, a support cam is attached, over which each housing wall has a gap for receiving an approximately horizontally movable driven ejector, and that a free space is left between the pair of opposing support cams.
  • the pack can be imagined in a cuboid shape, with the milk packs currently on the market having its longitudinal direction in the vertical.
  • the longitudinal axis of the sleeve also means the length of the sleeve or of the blank or of the flat part and consequently the width of the flat part measured transversely thereto.
  • the housing walls are now arranged in the device according to the invention at a distance from the width of the flat parts to be separated and have short or, in other embodiments, longer gaps in the vicinity of the support cams.
  • Appropriately small ejectors can be pushed through the gaps, essentially in a plane perpendicular to the housing walls and in particular parallel to the plane formed by two opposing support cams of a pair, which is approximately horizontal. It is understood that with such a structure, an ejector can push a flat part to be separated down from a support cam and into the opposite gap, so that the part has lost its support there after leaving the support cam and hangs cantilevered only from the opposite gap kept pinched.
  • the invention is advantageously further developed in that two pairs of opposing support blocks are arranged one above the other at a distance from a stack of parts with the respectively adjacent pair of opposing pushers. While above the measures for designing the sliding device with the columns ne ben the support cams are described, the two-stage arrangement of the method according to the invention can in turn be carried out by arranging two pairs of cams one above the other, in the former, generally arranged at the top, the separation of at least one flat part taking place, while in the second station arranged below, the separation only a single part from the bottom of the respective stack.
  • the upper stack can therefore have up to 300 blanks lying one above the other, and the upper pair of support cams can have adjoining pushers which are larger and / or coarser.
  • a photocell is attached at a distance from the pair of opposing support cams and is electrically connected via a control to the motor of a stack feed device with approximately horizontally movable transport magazines.
  • the photocell is arranged so that the heights of stacks described above are not exceeded, e.g. the height of 30 pieces in the bottom stack. On the other hand, this or another photocell can also ensure that the supply of the next stack is guaranteed when the foremost stack is used.
  • the stack feed device can further comprise a pair of link chains rotatable about shafts, the shafts being preferably inclined by 10 ° to 20 ° in relation to the vertical in a first direction, to which a series of push rods are attached to the link chains via holding arms of equal length is attached to the vertical plane perpendicular to the first direction of inclination of the shafts further inclined by 10 ° to 20 °.
  • the prism shape with a parallelogram base area for the design of the respective stack has already been mentioned above.
  • the use of the separating device is particularly versatile if, according to the invention, a basket which is in the form of a cylinder barrel and is accommodated in a stationary manner under the bottom pair of opposing support cams for receiving the respectively separated bottom part. It is then possible to convey one sleeve to one side in a folding station by means of a distributor rocker in the case of a paper sleeve and shortly thereafter to convey the next isolated sleeve in the other direction to a second folding station when the distributor rocker moves back; a movement which, like the swinging of the distributor arm, causes individual sleeves to be conveyed in two stations in quick succession.
  • Fig. 1 one can see schematically in the overall view on the left the stack feed device, generally designated 1, which is also shown in two different views in Figs. 2 and 3, but is not designated 1 there; and in the conveying direction (arrow 2) of the stack 3, 3 'of blanks 4 of Fig. 1 right the separating or separating station with the schematically shown lower isolated blank 4 and its dashed arcuate web 5 shown in the unfolding station in which the blank 4 (flat part) is shown folded into the sleeve shape.
  • FIG. 1 The three support rails 6 lying next to one another and running parallel to one another can be seen in FIG. 1, of which only two are shown in FIGS. 2 and 3.
  • FIG. 1 an essentially horizontal plane is spanned, which is actually shown lying horizontally, while perpendicular to this imaginary plane, the top of the support rails 6, on which the stack 3 in Direction 2 are pushed, the shafts 7 of the pair of link chains 8, 8 ', which are inclined in the viewing direction of Fig. 1 by 15 ° to the rear.
  • the waves 7 are inclined in a plane from the vertical above in the area of the upper link chain 8 with respect to the lower link chain 8 ', which is perpendicular to the actual horizontal plane and also perpendicular to the conveying direction 2.
  • the two runs of the chains 8, 8 'imaginary connection plane in the viewing direction of FIG. 1 is inclined upwards to the rear. Because of the slight inclination, this cannot be seen from the stacks 3 with the naked eye.
  • About connecting links 9 push rods 10 are connected to the link chains 8, 8 ', which are not only inclined in the manner described above with their upper tip 11 not only in the direction of view of FIG. 1, but also to the left.
  • This second inclination to the left thus means enclosing an angle of approximately 15 ° between the longitudinal axis of the respective push rod 10 with a vertical that is perpendicular to the conveying direction 2.
  • the stacks 3 have the shape of prisms with parallelogram-like bases, because the sleeves 4 are rectangular in the flat state.
  • the dashed line shows the longitudinal seal seam 12 of the respective sleeve 4.
  • Fig. 1 is shown in the conveying direction 2 "front" on the right side, i.e. the push rod designated 10 on the right moves along the right sprocket in a semicircle out of the path in the conveying direction 2, so that the right stack 3, in FIG. 1 the third stack from the left, down from the support rails 6 into the housing of the singling station at the front can be pushed in, which is shown in Figs. 4 to 6 in detail.
  • the foremost stack is moved by the push rod 10 moving out of the conveyor track 2 against the front stop rod 17, which is not shown in FIGS. 4 to 6, but is shown in FIG. 1 as fixed in place.
  • FIGS. 4 to 6 are to be thought in the conveying direction of arrow 2.
  • the left housing wall 19 is longer than the right housing wall 20, because the wall 19 is also to be thought inclined by 15 ° at the top left against the vertical lying in the paper plane of FIGS. 4 to 6. 4 to 6, the individual blanks 4 lie exactly parallel to one another and approximately perpendicular to the two housing walls 19, 20.
  • a small gap between the wall 20 and the stack 3 can be wedge-shaped to the left of the right wall 20 arise because in particular the upper stack 3 is arranged in the position inclined in two directions.
  • the right edge of a blank 4 should be designated 21 and the left edge 22 in each case.
  • the housing walls 19, 20 are arranged at a distance from the width B in contrast to the length L from one another.
  • a gap 25, 25' is arranged, while in addition to the lower support cams 24, 24 'each have a gap 26, 26' is attached.
  • This pusher 27, 27 ' are coarser and thicker than the next to the lower support bracket 24, 24' attached and also movable pusher 29, 29 '.
  • Each pusher 27, 27 ', 29, 29' can be moved in parallel in the direction of the double arrow 28 through the respective gap via bearing tabs 30.
  • the drive is shown schematically in Fig. 6 in that a tab 30 'on each side (ie a total of two tabs 30') is extended, both of which are connected to one another by a rod 31 and via the piston rod 32 of an air cylinder 33 in the direction of Double arrow 28 are movable.
  • the tabs 30 ' rotate about the pivot points 34th
  • a photocell 35 with a receiver 36 is attached, which is electrically controlled by a control, not shown is connected to the geared motor 16 of the stack feed device 1.
  • FIG. 4 can be taken as the starting point for the description.
  • the lower stack 3 ' has a height of 30 blanks 4.
  • the pushers 29, 29' are coupled to one another. They start at pivot point 34 Movement in the direction of arrow 28 to the left so that the right edge 21 of the bottom blank 4 is gripped and pushed by the right support cam 24 'to the left.
  • the left edge 22 of the blank 4 migrates into the gap 26 because this is released by the retraction of the left ejector 29.
  • This shift in the direction of arrow 28 to the left takes place in the direction of one, namely the left side, until the blank 4 has lost the support of the right support cam 24 'and now cantilevered down in the illustration of FIG. 5 while it is on the left side is held clamped in the gap 26.
  • the difference in the activity and effect of the upper pushers 27, 27 'at the lower end of the upper stack 3 to the lower separating station of the stack 3' is that the pushers, as is also shown schematically in FIGS. 4 to 6, are thicker and are roughly designed and, if necessary, separate two or even four blanks 4 from the upper stack 3 at the same time.
  • FIG. 5 this state is with the example of two Zu cut 4 shown.
  • Fig. 5 shows in the upper area how the right ejector 27 'just completely fills the right upper gap 25' and has pushed two blanks 4 into the upper left gap 25 at the same time, because this is released by retracting the slide 27.
  • the two blanks 4 now hang cantilevered and are only clamped on the left side by the support cam 23 or the gap 25 arranged next to them. If, in the transition to the state of FIG. 6, the left ejector 27 is pushed through the gap 25 in the direction of the double arrow 28 to the right, the last holder of the two lower blanks 4 is released and they fall freely through the space 18 onto the lower stack 3 '. This activity can be repeated until the photocell stops pushing the upper pushers 27, 27 'because the height of the lower stack 3' is reached.
  • a further photocell (not shown) scans this state and sends a signal to a controller which switches on the geared motor 16, which now pushes the push rods 10 by the length of one Stack magazine 36 in the direction of arrow 2 of FIG. 1 advances on the right. This new stack then falls onto the upper stack 3 of FIG. 4, so that the feeding and filling process is completed.
  • the further processing and transport of the isolated lowermost sleeve 4 according to FIG. 1 then takes place along the path 5 shown in dashed lines in a folding station, where according to FIG. 1 the sleeve is shown schematically at the top right in the unfolded state.
EP89100563A 1988-02-18 1989-01-13 Procédé et dispositif de séparation d'articles plans Expired - Lifetime EP0328875B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89100563T ATE103570T1 (de) 1988-02-18 1989-01-13 Verfahren und vorrichtung zum vereinzeln von ebenen teilen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3804946 1988-02-18
DE3804946A DE3804946A1 (de) 1988-02-18 1988-02-18 Verfahren und vorrichtung zum vereinzeln von ebenen teilen

Publications (3)

Publication Number Publication Date
EP0328875A2 true EP0328875A2 (fr) 1989-08-23
EP0328875A3 EP0328875A3 (en) 1990-05-16
EP0328875B1 EP0328875B1 (fr) 1994-03-30

Family

ID=6347591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100563A Expired - Lifetime EP0328875B1 (fr) 1988-02-18 1989-01-13 Procédé et dispositif de séparation d'articles plans

Country Status (14)

Country Link
EP (1) EP0328875B1 (fr)
JP (1) JPH02181284A (fr)
KR (1) KR890012875A (fr)
AR (1) AR244173A1 (fr)
AT (1) ATE103570T1 (fr)
AU (1) AU619248B2 (fr)
BR (1) BR8900732A (fr)
DE (2) DE3804946A1 (fr)
DK (1) DK71689A (fr)
ES (1) ES2050724T3 (fr)
FI (1) FI890115A (fr)
NO (1) NO890680L (fr)
NZ (1) NZ228015A (fr)
TR (1) TR25109A (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4620944B2 (ja) * 2003-10-16 2011-01-26 キヤノン株式会社 積和演算回路及びその方法
JP6238436B2 (ja) * 2013-09-06 2017-11-29 国立大学法人九州工業大学 電流電圧変換回路と共に用いるバラツキ補償回路
JP6784162B2 (ja) 2016-12-13 2020-11-11 富士通株式会社 情報処理装置、プログラム及び情報処理方法
CN108328299B (zh) * 2018-02-28 2023-08-04 福州大学 一种曲柄滑块推送装置及其工作方法
JP6985988B2 (ja) * 2018-06-21 2021-12-22 株式会社日立製作所 ニューラルネットワーク回路
JP7027371B2 (ja) * 2019-06-03 2022-03-01 株式会社東芝 ニューラルネットワークの演算装置、ニューラルネットワーク、ニューラルネットワークの制御方法
DE202023000233U1 (de) 2023-02-03 2023-04-11 Tobias Raymund Klostermann Vorrichtung zum Stapeln von Gegenständen

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723602A (en) * 1950-03-18 1955-11-15 Clinton Foods Inc Automatic partition strip feeding mechanism
US2744551A (en) * 1954-08-16 1956-05-08 Gen Box Distributors Veneer feeder and conveyor unit
FR1514371A (fr) * 1966-01-15 1968-02-23 Tagers G M B H Procédé et dispositif pour cueillir et séparer une à une les feuilles d'une pilede tôles et pour transporter les tôles individuelles vers un poste de travail
DE1902794A1 (de) * 1968-01-26 1969-09-04 Jurine Villeurbanne Soc Verfahren und Vorrichtung zum Beschicken von Kartonbearbeitungsmaschinen
US4093207A (en) * 1976-12-01 1978-06-06 R. A. Jones & Co. Inc. Magazine and feeder for carton blanks
DE8306984U1 (de) * 1983-03-10 1984-01-26 Leuprecht, Karl, 8904 Friedberg Ablagefach zur aufnahme von biegsamen, blattfoermigem material, wie einwickelpapier, frischhaltefolie oder dgl.
GB2132174A (en) * 1982-12-22 1984-07-04 Rovema Gmbh Device for delivering folding box blanks to a cartoning machine
DE3607642A1 (de) * 1985-03-18 1986-10-16 VEB Strumpfkombinat Esda Thalheim, 09380 Thalheim Einrichtung zur einhaltung einer konstanten stapelhoehe in einem magazin

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1187246B (de) * 1962-09-25 1965-02-18 Telefunken Patent Einrichtung zum Vereinzeln flacher Sendungen, wie beispielsweise Briefe
DE1561418A1 (de) * 1967-03-08 1970-03-19 Nordischer Maschb Rud Baader Vorrichtung zum Entnehmen von Zuschnitten aus einem Stapel
DE8122993U1 (de) * 1981-08-05 1983-01-13 Maschinenfabrik Fr. Niepmann GmbH & Co KG, 5820 Gevelsberg Vorrichtung zum Vereinzeln von blattförmigen Zuschnitten
GB2150920B (en) * 1983-11-28 1987-11-11 Mead Corp Equipment and method for feeding packaging blanks to a packaging machine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2723602A (en) * 1950-03-18 1955-11-15 Clinton Foods Inc Automatic partition strip feeding mechanism
US2744551A (en) * 1954-08-16 1956-05-08 Gen Box Distributors Veneer feeder and conveyor unit
FR1514371A (fr) * 1966-01-15 1968-02-23 Tagers G M B H Procédé et dispositif pour cueillir et séparer une à une les feuilles d'une pilede tôles et pour transporter les tôles individuelles vers un poste de travail
DE1902794A1 (de) * 1968-01-26 1969-09-04 Jurine Villeurbanne Soc Verfahren und Vorrichtung zum Beschicken von Kartonbearbeitungsmaschinen
US4093207A (en) * 1976-12-01 1978-06-06 R. A. Jones & Co. Inc. Magazine and feeder for carton blanks
GB2132174A (en) * 1982-12-22 1984-07-04 Rovema Gmbh Device for delivering folding box blanks to a cartoning machine
DE8306984U1 (de) * 1983-03-10 1984-01-26 Leuprecht, Karl, 8904 Friedberg Ablagefach zur aufnahme von biegsamen, blattfoermigem material, wie einwickelpapier, frischhaltefolie oder dgl.
DE3607642A1 (de) * 1985-03-18 1986-10-16 VEB Strumpfkombinat Esda Thalheim, 09380 Thalheim Einrichtung zur einhaltung einer konstanten stapelhoehe in einem magazin

Also Published As

Publication number Publication date
AR244173A1 (es) 1993-10-29
NZ228015A (en) 1991-10-25
JPH01247342A (ja) 1989-10-03
TR25109A (tr) 1992-09-28
DE3804946A1 (de) 1989-08-31
JPH02181284A (ja) 1990-07-16
KR890012875A (ko) 1989-09-19
AU619248B2 (en) 1992-01-23
BR8900732A (pt) 1989-10-17
EP0328875A3 (en) 1990-05-16
EP0328875B1 (fr) 1994-03-30
DK71689A (da) 1989-08-19
NO890680D0 (no) 1989-02-17
ES2050724T3 (es) 1994-06-01
NO890680L (no) 1989-08-21
ATE103570T1 (de) 1994-04-15
DE58907314D1 (de) 1994-05-05
FI890115A (fi) 1989-08-19
DK71689D0 (da) 1989-02-16
AU3008189A (en) 1989-08-24
FI890115A0 (fi) 1989-01-10

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