DK158364B

DK158364B - Device for stacking of objects, in particular folded pieces of cloth

Info

Publication number: DK158364B
Application number: DK11688A
Authority: DK
Inventors: Joern Munch Jensen
Original assignee: Ejnar Jensen & Soen Maskinfabr
Priority date: 1988-01-12
Filing date: 1988-01-12
Publication date: 1990-05-07
Also published as: DK11688A; DK11688D0; DK158364C

Description

1 DK 158364B1 DK 158364B

Den foreliggende opfindelse angår et apparat til stabling af genstande, især foldede tøjstykker, og omfattende et transportbånd med et i det væsentlige vandret forløb fra en indløbsende, ved hvilken genstandene, der skal stables, over-5 føres til båndet fra en transportør med en afleveringsrulle, og en afleveringsende omfattende en rulle, som har bevægelsesorganer til forskydning af dens akse i båndforløbets retning med en strækning, der svarer til genstandens længde i forskydningens retning, hvilket transportbånd er forsynet med 10 stramme- og drivorganer, der muliggør fremføring af båndet i det væsentlige synkront med genstandenes overførsel til dette og standsning af båndet, medens den forskydelige rulle bevæges til aflægning af genstanden.The present invention relates to an apparatus for stacking articles, especially folded garments, and comprising a conveyor belt having a substantially horizontal course from an inlet end at which the articles to be stacked are transferred to the belt from a conveyor with a delivery roller and a delivery end comprising a roller having movement means for displacing its axis in the direction of the belt course with a distance corresponding to the length of the article in the direction of the displacement, which conveyor belt is provided with 10 tensioning and driving means which enable the belt to be conveyed therein. substantially synchronous with the transfer of the articles thereto and stopping the belt while the slidable roller is moved to deposit the object.

Apparater af denne art har været anvendt gennem et 15 længere tidsrum. De kendte apparater er udformet som en selvstændig enhed, der placeres ud for udløbsenden af en foldemaskine, der afgiver de foldede tøjstykker ved hjælp af en transportør med en afleveringsrulle. Udformningen som en selvstændig enhed medfører en række ulemper, hvoraf en meget 20 tungtvejende er et stort pladsbehov. En yderligere ulempe er omkostningerne ved at tilvejebringe en drivenhed, som kan drive apparatet synkront med foldemaskinen, således at tøj-stykkerne placeres korrekt på transportbåndet og således, at stablingen foretages nøjagtigt i en stabel med rette kanter. · 25 Formålet med opfindelsen er at udforme apparatet såle des, at pladsbehovet formindskes og at problemerne med synkroniseringen elimineres.Devices of this kind have been used for a long period of time. The known apparatus is designed as a standalone unit placed next to the outlet end of a folding machine which delivers the folded clothing pieces by means of a conveyor with a delivery roller. The design as a standalone unit entails a number of disadvantages, of which a very heavy weight is a large space requirement. A further disadvantage is the cost of providing a drive unit capable of operating the apparatus synchronously with the folding machine, so that the pieces of clothing are placed correctly on the conveyor belt and so that the stacking is carried out accurately in a stack with straight edges. The purpose of the invention is to design the apparatus so as to reduce the need for space and eliminate the problems with synchronization.

Dette formål opnås ifølge opfindelsen ved, at apparatet udformes som angivet i den kendetegnede del af krav 1.This object is achieved according to the invention in that the apparatus is designed as defined in the characterized part of claim 1.

30 Ved apparatet ifølge opfindelsen udfører drivforbin delsen mellem afleveringsrullen og bevægelsesorganerne den synkroniserende funktion, idet bevægelsesorganerne blot skal udøve en kraft, der er tilstrækkelig til drift af selve apparatet. Friløbet sørger for, at foldemaskinen i perioderne 35 mellem stablingerne kan fungere upåvirket af stablingsappara- tet. X praksis er pladsbehovet for apparatet formindsket så meget, at apparatet kan fastgøres direkte uden på foldemaskinen, således at stablingen foretages på det sted, hvor foldeIn the apparatus according to the invention, the drive connection between the delivery roller and the movement means performs the synchronizing function, the movement means merely having to exert a force sufficient to operate the apparatus itself. The free run ensures that the folding machine during the periods 35 between the stacks can function unaffected by the stacker. X practice, the space requirement of the apparatus is reduced so much that the apparatus can be attached directly to the outside of the folding machine, so that the stacking is done at the place where folding

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maskinen ellers ville afgive tøjstykkerne til videre transport.otherwise the machine would deliver the pieces of clothing for further transport.

I henhold til opfindelsen består bevægelsesorganerne af en asynkron motor, der driver en føringsrulle for en fø-5 ringsskinne for den forskydelige rulle. Ved denne udformning etableres drivforbindelsen mellem afleveringsrullen og føringsrullen. Det er ifølge opfindelsen særlig fordelagtigt, at føringsrullen er anbragt koaksialt med afleveringsrullen, idet opbygningen herved bliver særlig kompakt og enkel.According to the invention, the moving means consists of an asynchronous motor driving a guide roller for a sliding roller guide rail. In this embodiment, the drive connection is established between the delivery roller and the guide roller. According to the invention, it is particularly advantageous that the guide roller is arranged coaxially with the delivery roller, the structure thereby being particularly compact and simple.

10 I henhold til opfindelsen kan bevægelsesorganerne be stå af en dobbeltvirkende trykluftcylinder, der driver føringsrullen ved hjælp af en tandstang. Denne udformning er særlig hensigtsmæssig ved direkte montering uden på en foldemaskine, fordi den har en slank form og kan monteres langs 15 foldemaskinens ydre væg i lodret retning. Apparatet ifølge opfindelsn kan derfor monteres på en eksisterende foldemaskine med minimale indgreb i dennes konstruktion.According to the invention, the movement means may consist of a double-acting compressed air cylinder which drives the guide roller by means of a rack. This design is particularly suitable for direct mounting on the outside of a folding machine, because it has a slender shape and can be mounted along the outer wall of the folding machine in a vertical direction. The apparatus according to the invention can therefore be mounted on an existing folding machine with minimal interference with its construction.

Opfindelsen skal i det følgende beskrives nærmere under henvisning til tegningen, der i skrå afbildning skematisk 20 viser en udførelsesform for apparatet ifølge opfindelsen.BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail with reference to the accompanying drawings, which diagrammatically depict schematically an embodiment of the apparatus according to the invention.

Apparatet ifølge opfindelsen til stabling af tøjstykker er især indrettet til at kunne monteres direkte på en maskine til en eller anden form for behandling af tøjstykket, f.eks. en foldemaskine. Tøjstykket afgives fra maskinen via 25 en transportør med en afleveringsrulle 1. Normalt er denne afleveringsrulle en del af en afleveringstransportør, der aflægger de færdigbehandlede tøjstykker på en ved siden af maskinen separat opstillet stablemaskine. Apparatet ifølge opfindelsen har en drivforbindelse med den foranstående maskine 30 og bør derfor monteres direkte på denne, hvorved dets pladsbehov reduceres. Apparatet har i hver side en bæresøjle 2, der fortrinsvis fastgøres direkte til den foranstående maskines stativ 3. Apparatet omfatter et transportbånd, der fortrinsvis består af en række parallelle bændler 4 (for tyde-35 ligheds skyld er der på tegningen kun vist et enkelt), der er ført over et antal ruller. Transportbåndet har mellem en rulle 5 ved indløbsenden og en rulle 6 med forskydelig akse et tilnærmelsesvis vandret forløb. Rullen 5 bæres af et par armeThe apparatus according to the invention for stacking garments is particularly adapted to be mounted directly on a machine for some form of treatment of the garment, e.g. and folding machine. The piece of clothing is delivered from the machine via a conveyor with a delivery roller 1. Normally, this delivery roller is part of a delivery conveyor, which places the finished pieces of clothing on a stacking machine set up next to the machine. The apparatus of the invention has a drive connection with the aforementioned machine 30 and should therefore be mounted directly thereon, thereby reducing its space requirements. The apparatus has on each side a supporting column 2, which is preferably attached directly to the frame of the preceding machine 3. The apparatus comprises a conveyor belt consisting preferably of a series of parallel straps 4 (for clarity only a single illustration is shown in the drawing). that is passed over a number of rollers. The conveyor belt has an approximately horizontal course between a roller 5 at the inlet end and a roller 6 with sliding axis. The roll 5 is carried by a pair of arms

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7, der er forskydelige i retning af pilene 7a ved hjælp af bevægesesorganer, der er monteret på et par konsoller 8 på bæresøjlerne 2. Bærekonsollerne tjener tillige til lejring af et par ruller 9,10, der indgår i en strammemekanisme for 5 transportbåndet. Strammemekanismen omfatter tillige to yderligere ruller 11 og 12, der er monteret på en slæde 13 ved hver ende. Slæderne 13 er indrettet til at kunne glide op og ned langs en lodret styresøjle 14. Drivforbindelsen mellem afleveringsrullen 1 og apparatet er i den viste udførelses-10 form udformet som en kort båndtransportør med et sæt bændler 15 (kun ét er vist), der er ført over afleveringsrullen 1 og en aflæggerulle 16, der er placeret inde over båndet 4. Af-læggerullen 16 er lejret i konsollerne 8 og har fælles akse med et par driv- og føringshjul 17 for armene 7. Armene 7 fø-15 res af nogle yderligere ruller 18, som er lejret på konsollerne 8. På drivhjulene 17 er der fastgjort et tandhjulsdrev 19, som er i indgreb med en tandstang 20. Tandstangen 20 er ved dens øverste ende forsynet med drivorganer i form af dob-beltvirkende pneumatiske cylindre, der på tegningen er anty-20 det ved stempelstangen 21 og ved deres nederste ender er i indgreb med slæderne 13. Mellem aflæggerullen 16 og drivhjulene er der en drivforbindelse med et friløb, der tillader rullen 16 at rotere frit i transportretningen, og som tillader armene frit at blive trukket indefter mod konsollerne.7, which are displaceable in the direction of the arrows 7a by means of moving means mounted on a pair of brackets 8 on the support columns 2. The support brackets also serve to mount a pair of rollers 9,10 which are included in a tensioning mechanism for the conveyor belt. The tightening mechanism also comprises two additional rollers 11 and 12 mounted on a carriage 13 at each end. The slides 13 are arranged to slide up and down along a vertical guide column 14. The drive connection between the delivery roller 1 and the apparatus is in the illustrated embodiment 10 formed as a short belt conveyor with a set of tapes 15 (only one is shown) which is passed over the delivery roll 1 and a deposition roll 16 located within the belt 4. The deposition roll 16 is mounted in the brackets 8 and has a common axis with a pair of drive and guide wheels 17 for the arms 7. The arms 7 are provided by some further rollers 18, which are mounted on the brackets 8. On the drive wheels 17, a pinion 19 is engaged, which is engaged by a rack 20. The rack 20 is provided at its upper end with drive means in the form of double acting pneumatic cylinders which in the drawing, the anti-20 is at the piston rod 21 and at their lower ends engages the carriages 13. Between the unloading roller 16 and the drive wheels there is a drive connection with a free run which allows the roller 16 to rotate from It allows the arms to be freely pulled inwards against the brackets.

25 Når armene 7 er trukket helt tilbage befinder de sig i et beskyttelsesrør 22, der er placeret inden i stativet på den maskine, hvorpå apparatet er monteret. Rullen 5 er forsynet med en eller anden form for bremse eller friktionsindretning, der er indrettet·til at holde båndet 4 stationært i forhold 30 til den forskydelige rulle 6 under dens forskydning fremef ter.25 When the arms 7 are fully retracted, they are located in a protective tube 22 located inside the rack of the machine on which the apparatus is mounted. The roller 5 is provided with some type of brake or friction device adapted to hold the belt 4 stationary relative to the displaceable roller 6 during its displacement forward.

Apparatets virkemåde fremgår af det følgende. Når det ved hjælp af f.eks. en fotocelle konstateres, at et tøjstykke er klart til aflevering på transportbåndet 4 på aflæggerullen 35 16 aktiveres den pneumatiske cylinder, idet apparatet befin der sig med tandstængerne 20 i nederste stilling. Tandhjulene driver derved drivhjulene 17 rundt, hvorved armene 7 føres udefter. Friløbet mellem drivhjulene 17 og rullen 16 er iThe operation of the device is as follows. When using e.g. a photocell is found that a piece of clothing is ready for delivery to the conveyor belt 4 on the deposition roller 35 16, the pneumatic cylinder is actuated, the apparatus being with the tooth rods 20 in the lower position. The gears thereby drive the drive wheels 17, thereby extending the arms 7 outwards. The clearance between the drive wheels 17 and the roller 16 is in

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4 denne situation låst, hvorved drivhjulene ikke har mulighed for at bevæge sig hurtigere end rullen 16. Herved sikres på enkel måde nøjagtig synkronisme mellem bevægelsen af båndet 4 og afleveringsrullen 1. Da rullen 10 er forsynet med en brem-5 se- eller friktionsindretning er båndet stationært i forhold til denne rulle og dermed også i forhold til rullen 6. Tøjstykket aflægges på grund af den synkrone bevægelse helt glat på båndet 4 og bevæger sig med dette udefter, indtil stable-positionen er nået. Herefter reverseres de pneumatiske cylin-10 dre. Slæderne 13 presses nedefter, og armene 7 trækkes ind.4, this situation is locked, whereby the drive wheels do not have the ability to move faster than the roller 16. In this way, accurate synchronization is ensured between the movement of the belt 4 and the delivery roller 1. Since the roller 10 is provided with a brake or friction device, The belt is stationary with respect to this roller and hence also with respect to the roller 6. Due to the synchronous movement the garment is completely smooth on the belt 4 and moves with this outwards until the stable position is reached. The pneumatic cylinders are then reversed. The carriages 13 are pressed downwards and the arms 7 are retracted.

På grund af det i rullen 5 anbragte friløb, som kun tillader båndet 4 at bevæge sig udefter, rulles båndet 4 så at sige bort under tøjstykket ved hjælp af rullen 6, og tøjstykket bliver derved lagt af oven på de tidligere stablede tøjstyk-15 ker.Due to the freewheel positioned in the roller 5, which only allows the belt 4 to move outward, the belt 4 is, so to speak, rolled away under the garment by means of the roller 6, and the garment is thereby placed on top of the previously stacked garments 15 .

Anvendelsen af en pneumatisk cylinder i forbindelse med en tandstang er enkel og optager kun plads i bæresøjlernes længderetning. Der kan imidlertid inden for opfindelsens rammer anvendes andre former for asynkrone drivorganer, f.eks 20 en elektrisk motor. Det kan endvidere være hensigtsmæssigt, at slæderne 13 i yderstillingerne er fjederbelastet mod en midterstilling, idet en sådan fjederkraft vil medvirke til en hurtig igangsætning af bevægelsen af armene 7 og ved bevægelsesafslutningen virke som en art bremse. Det er hensigts-25 mæssigt at afbremsningen af rullen 10 afbrydes under tilbagetrækningen af armene 7, idet denne bevægelse bør ske hurtigt for at opnå en lige og nøjagtig stabel og for at gøre appa-ratet klar til den næste stableoperation. 1The use of a pneumatic cylinder in connection with a rack is simple and takes up space only in the longitudinal direction of the support columns. However, other forms of asynchronous drive means, for example an electric motor, may be used within the scope of the invention. Furthermore, it may be convenient that the slides 13 in the outer positions are spring loaded against a central position, such a spring force will assist in the rapid initiation of movement of the arms 7 and act as a kind of brake at the movement end. It is expedient for the braking of the roller 10 to be interrupted during the retraction of the arms 7, as this movement should be rapid to obtain a straight and accurate stack and to prepare the apparatus for the next stacking operation. 1

Claims

An apparatus for stacking articles, especially folded clothing pieces, and comprising a conveyor belt having a substantially horizontal course from an inlet end, at which the articles to be stacked are transferred to the belt from a conveyor with a delivery roller, and a a delivery end comprising a roller having movement means for displacing its axis in the direction of the belt course with a distance corresponding to the length of the article in the direction of the displacement, which conveyor belt is provided with tensioning and driving means which enable the belt to be conveyed substantially synchronously with transferring the articles thereto and stopping the belt while the slidable roller is moved to deposit the article, characterized in that the moving means for displacing the delivery roller are arranged to exert a predetermined shear force and that between the moving means there is a drive connection with a free run that allows free rotation of breeding the rolling roll in its direction of rotation.

Apparatus according to claim 1, characterized in that the moving means consists of an asynchronous motor driving a guide roller for a sliding guide guide rail.

Apparatus according to claim 2, characterized in that the guide roller is mounted coaxially with the delivery roller.

Apparatus according to claim 2 or 3, 30, characterized in that the linear motor is a double-acting compressed air cylinder which drives the guide roller by means of a rack.

Apparatus according to claim 4, characterized in that the rack in at least one of its end positions is spring loaded against its central position.

Apparatus according to claim 1, characterized in that one of the rollers in

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6 DK 158364B the direction is provided with a brake and that the roller at the inlet end is provided with a clearance which prevents movement of the belt in the belt course towards the inlet end.