DK148921B

DK148921B - APPLIANCE FOR FOLDING LAUNDRY PIECES MORE TIMES

Info

Publication number: DK148921B
Application number: DK549981A
Authority: DK
Inventors: Friedhelm Mehrhoff
Original assignee: Kannegiesser H Gmbh Co
Priority date: 1980-12-20
Filing date: 1981-12-11
Publication date: 1985-11-18
Also published as: FR2496725A1; DE3048309A1; DK549981A; DK148921C; DE3048309C2; GB2089859B; GB2089859A; FR2496725B1

Description

i 148921in 148921

Opfindelsen angår et apparat til foldning af vasketøjsstykker flere gange, hvilket apparat er af den i krav l's indledning angivne art.The invention relates to an apparatus for folding laundry items several times, which apparatus is of the kind specified in the preamble of claim 1.

Ved et kendt apparat af denne art, jfr. DE-GM nr. 1.935.519, 5 fig. 4-6, er der på en taktvis drejelig, vandret aksel anbragt tre klemmemekanismer 120° forsat bag hinanden. Den over og i forløbet af remtransportørens bevægelsesstrækning anbragte aksel med klemmemekanismerne er taktvis drejelig i trin på 120°, så hver enkelt af de tre klemmemeka-10 nismer er i en tilførselsposition for vasketøjsstykker, i en foldeposition og i en venteposition. Den således udformede foldebro er i forløbet af remtransportørens bevægelsesretning og set i denne bevægelsesretning anbragt i betydelig afstand bag den forreste ende af remtransportøren.For a known apparatus of this kind, cf. DE-GM No. 1,935,519, FIG. 4-6, three clamping mechanisms 120 ° are arranged one behind the other on a rotatable, horizontal shaft. The shaft located over and in the course of the belt conveyor's movement distance with the clamping mechanisms is rotationally rotatable in 120 ° increments so that each of the three clamping mechanisms is in a supply position for laundry pieces, in a folding position and in a waiting position. The folding bridge thus formed is located at a considerable distance behind the front end of the belt conveyor in the direction of the belt conveyor's direction of movement and seen in this direction of movement.

15 Apparatet er beregnet til opstilling i tilslutning til en strygerulle eller et lignende apparat. De vasketøjsstykker, der skal foldes, bliver derfor maskinelt tilført såvel apparatet som dettes klemmemekanismer, hvortil der desuden under transportørens remme og før klemmemekanismernes tilførsels-20 position findes løfteorganer til løftning af remmene. Ved særskilt opstilling af apparatet og manuel tilførsel af vasketøjsstykker til dette, f.eks. vasketøjsstykker af blandet vævning; især i form af smådele, såsom håndklæder, servietter og lignende, der ikke må stryges, bliver vasketøjs-25 stykkerne anbragt manuelt på remtransportørens løbende remme. Da den rette pålægning af vasketøjsstykker på løbende remme er problematisk, og pålægningen af det næste vasketøjsstykke først kan ske, når det forud pålagte vasketøj sstykke er blevet ført helt ud af pålægningsområdet, er 30 dette apparat ikke særlig godt egnet til foldning af de ovennævnte vasketøjsstykker.15 The appliance is intended for installation in connection with an ironing roll or similar apparatus. Therefore, the pieces of laundry to be folded are supplied mechanically to both the apparatus and its clamping mechanisms, to which, furthermore, there are lifting means for lifting the straps under the conveyor belts and before the position of the clamping mechanisms. By separately setting up the appliance and manually supplying laundry items for this, e.g. mixed weaving laundry pieces; especially in the form of small parts, such as towels, napkins and the like, which must not be ironed, the laundry pieces are placed manually on the belt conveyor's running belts. Since proper application of laundry pieces to running belts is problematic and the application of the next laundry piece can only occur once the pre-installed laundry piece has been completely removed from the application area, this apparatus is not very suitable for folding the above laundry pieces .

Opfindelsen har til formål at anvise udformningen af et apparat af den nævnte art, der mere fordelagtigt end det kendte apparat er egnet til foldning af ikke strøgne, manuelt til-35. førte vasketøjsstykker, især sådanne i form af små vasketøjsstykker, såsom håndklæder og servietter.The invention has for its object to provide the design of an apparatus of the aforementioned kind which is more advantageous than the known apparatus suitable for folding non-coats manually. brought laundry items, especially those in the form of small laundry items such as towels and napkins.

148921 2148921 2

Det angivne formål opnås ved den i krav l's kendetegnende del angivne indretning og udformning.The stated object is achieved by the device and configuration of the characterizing part of claim 1.

Ved denne indretning og udformning af apparatet er det muligt at indføre den forreste kant af et vasketøjs-5 stykke manuelt direkte i en af klemmemekanismerne, at klemme dette rigtigt ind mellem klempladen og anslaget og allerede straks efter bevægelsen af denne klemmemeka-nisme at indføre og indklemme rigtigt i foldeposition den forreste kant af et nyt vasketøjsstykke i den på dette tids-10 punkt i tilførselspositionen værende, anden klemmemekanisme. Muligheden for at gennemføre den manuelle, orienterede indføring af vasketøjsstykkets forreste kant i klemmemekanis-men og muligheden for at indklemme det næste vasketøjsstykke allerede umiddelbart efter bevægelsen af den første 15 klemmemekanisme til foldepositionen uden kostbar mekanik fører til en forbedring af arbejdsmåden for apparatets betjeningspersonale og af foldekvaliteten. En yderligere fordel ved apparatet ifølge opfindelsen består i, at vasketøjsstykkerne med en stadig glidende, tilstrækkelig 20 afpasset afstand tilføres den næste foldestation, hvorved disse kan foldes problemløst og for anden gang på samme måde eller på tværs.In this arrangement and design of the apparatus it is possible to insert the front edge of a laundry piece manually directly into one of the clamping mechanisms, to squeeze this right between the clamping plate and the stop and immediately after the movement of this clamping mechanism is introduced and correctly clamping in folding position the front edge of a new laundry piece in the second clamping mechanism at this point in the feeding position. The ability to implement the manual oriented insertion of the front edge of the laundry piece into the clamping mechanism and the possibility of clamping the next laundry piece immediately after the movement of the first 15 clamping mechanism to the folding position without costly mechanics leads to an improvement in the operation of the apparatus's operating staff and folding quality. A further advantage of the apparatus according to the invention consists in the fact that the laundry pieces with a still sliding, sufficiently spaced distance are fed to the next folding station, whereby they can be folded seamlessly and for the second time in the same way or across.

Fordelagtige udførelsesformer for apparatet ifølge opfindelsen er angivet i krav 2-6, hvorved foranstaltningerne ifølge 25 krav 3 og 4 yderligere ertil fordel især i sikkerhedsteknisk henseende; ved disse foranstaltninger undgås med sikkerhed en beskadigelse af betjeningspersonens fingre ved orienteret indklemning af vasketøjsstykkets forreste kant i klemmemekanismen.Advantageous embodiments of the apparatus according to the invention are set out in claims 2-6, wherein the measures according to claims 3 and 4 are further advantageous especially in the safety-technical aspect; these measures will certainly prevent damage to the operator's fingers by oriented clamping of the front edge of the laundry piece into the clamping mechanism.

30 Opfindelsen forklares nærmere i det følgende ved et udførelseseksempel under henvisning til den skematiske tegning, hvor fig. 1 er et længdesnit gennem den første foldestation med i tilførsels- og foldeposition værende klem-35 memekanismer, 148921 3 fig. 2 viser klemmemekanismen i tilførselspositionen ifølge fig. 1 i større målestok, og fig. 3 viser den maskinelle betjeningsindretning for klem-memekanismerne i foldepositionen ifølge figi 1 i 5 større målestok.The invention will be explained in more detail below by way of example with reference to the schematic drawing, in which fig. 1 is a longitudinal section through the first folding station with clamping mechanisms in supply and folding position; FIG. 2 shows the clamping mechanism in the supply position of FIG. 1 on a larger scale; and FIG. 3 shows the machine operating device for the clamping mechanisms in the folding position according to Fig. 1 on a larger scale.

Den på tegningen viste del af apparatet omfatter en remtransportør 10 og to klemmemekanismer 11 og 12. Klemmemeka-nismerne 11 og 12 er anbragt mellem og med deres ender fastgjort til to parallelt med hinanden anbragte kædedrev 10 13. Af disse kædedrev 13 er på tegningen kun vist det i remtransportørens bevægelsesretning til venstre beliggende kædedrev 13 med de to kædehjul 14 og 15 og kæden 16. Kædedrevet 13 er lejret og taktvis drevet i retning af pilen 17 ved hjælp af i og for sig kendte elementer og mekanismer, 15 af hvilke der dog kun er vist akslerne 36 og 37, på hvilke kædehjulene 14 og 15 er monteret. Hver af de to klemmemekanismer 11 og 12 består i det væsentlige af en klemplade 18 og et anslag 19, idet klempladen 18 ved hjælp af et hængsel 20 er lejret på det af L-profiljern fremstillede anslag 19.The portion of the apparatus shown in the drawing comprises a belt conveyor 10 and two clamping mechanisms 11 and 12. The clamping mechanisms 11 and 12 are arranged between and with their ends attached to two parallel sprockets 10 13. Of these sprockets 13, only shown in the direction of movement of the belt conveyor to the left chain sprocket 13 with the two sprockets 14 and 15 and the sprocket 16. The sprocket 13 is mounted and driven clockwise in the direction of the arrow 17 by means and per se known elements and mechanisms 15, of which however only shafts 36 and 37 are shown on which the sprockets 14 and 15 are mounted. Each of the two clamping mechanisms 11 and 12 consists essentially of a clamping plate 18 and a stop 19, the clamping plate 18 being mounted by means of a hinge 20 on the stop 19 made of L-profile iron.

20 Anslaget 19 har en elastisk anslagsprofilliste 21, f.eks. i form af en gummislange eller en børsteliste. På klempladen 18 og anslaget 19's L-profiljern er der på bagsiden og ved sidekanterne af disse dele anbragt vinkelstykker 22 og 23, hvortil der er fastgjort trykfjedre 24 til sammen-25 klemning af klempladen 18 og anslaget 19.The stop 19 has an elastic impact profile list 21, e.g. in the form of a rubber hose or a brush strip. Angle pieces 22 and 23 are provided on the back side and the L-profile iron of the stop 19 on the back and at the side edges of these parts, to which compression springs 24 are secured for clamping the clip plate 18 and the stop 19.

De ved stillingen af kædehjulene 14 og 15 i kædedrevet 13 fikserede tilførsels- og foldepositioner 25 hhv. 26 for klemmemekanismerne 11 og 12 er med hensyn til remtransportøren 10 anbragt på en sådan måde, at tilførselspositio-30 nen 25 ligger foran tilførselssiden af en venderulle 27 i remtransportøren 10, og foldepositionen 26 er fjernet så meget i bevægelsesretningen, jfr. pilen 28, fra denne venderulle 27, at den derimellem liggende remtransportør-, strækning med længden A yder en så stor modstand mod 35 tilbagegående bevægelse af et vasketøjsstykke Wl, at dette holdes ubevægeligt eller ikke kan glide tilbage fra remtrans- 148921 4 portøren 10 som følge af vægten af den over venderullen 27 nedhængende, bageste del af vasketøjsstykket.The feed and fold positions 25 and 25 respectively fixed at the position of the sprockets 14 and 15 of the sprocket 13 respectively. 26 for the clamping mechanisms 11 and 12 with respect to the belt conveyor 10 are arranged in such a way that the supply position 25 lies in front of the supply side of a turning roller 27 in the belt conveyor 10 and the folding position 26 is removed as much in the direction of movement, cf. arrow 28, from this turning roller 27, that the intermittent belt conveyor stretch of length A provides such a great resistance to the reciprocating movement of a laundry piece W1 that it is held motionless or cannot slide back from the belt conveyor 10 as due to the weight of the rear part of the laundry piece hanging over the turning roller 27.

Kraften af de to trækfjedre 24 i en klemmemekanisme 11 eller 12 er valgt på en sådan måde, dels at klemmekraften af 5 klempladen 18 mod anslaget 19 let kan overvindes ved manuel nedtrykning af klempladen 18, dels at der alligevel opnås en for indføringsoperationen af vasketøjsstykket tilstrækkelig klemmevirkning. I stedet for trækfjedre 24 kan der naturligvis også anvendes andre fjedre.The force of the two tension springs 24 in a clamping mechanism 11 or 12 is selected in such a way that the clamping force of the clamping plate 18 against the stop 19 can be easily overcome by manual depressing of the clamping plate 18 and, secondly, that a sufficient for the insertion operation of the laundry piece is obtained. clamping action. Of course, other springs can be used instead of tension springs 24.

10 Ophævelsen af klemmekraften af klempladen 18 mod anslaget 19 i foldepositionen 26 sker maskinelt. Hertil er der en pneumatisk aktiverbar arbejdscylinder 29 ved apparatets sidevæg 40 og en vægtstang 30, jfr. fig. 1 og 3. Anbringelsen af arbejdscylinderen 29 samt udformningen af stangen 30 15 kan naturligvis også ske på anden måde end vist.The lifting of the clamping force of the clamping plate 18 against the stop 19 in the folding position 26 takes place mechanically. For this there is a pneumatically actuable working cylinder 29 at the side wall 40 of the apparatus and a lever 30, cf. FIG. 1 and 3. The arrangement of the working cylinder 29 as well as the design of the rod 30 15 can, of course, also be effected by other means than shown.

Det kun delvis viste apparat har i øvrigt alle yderligere i og for sig kendte dele og mekanismer, der er nødvendige til apparatets drift, som f.eks. et elektrisk styreorgan med følere i form af fotoceller 31,32 og endestopafbrydere 33 og 20 34. De i tilførselspositionen 25 anbragte fotoceller 31,32 tjener især til aftastning af bevægelserne af betjeningspersonens hænder i området for klemmemekanismen 11 eller 12 tillige med afføling af disses belægningstilstand. Den i området for det Øvre løb 38 i remtransportøren 10 anbragte 25 endestopafbeyder 33 tjener til styring af arbejdscylinderen 29 og dermed til styring af åbningsbevægelsen for klemme-mekanismerne 11 eller 12 i foldestationen 26. Endestopafbryderen 33 aktiveres af det på remtransportøren 10's øvre løb 38 liggende vasketøjsstykke Wl. Den i området for det 30 øvre løb 39 af kæden 16 anbragte endestopafbryder 34 tjener til frakobling af kædedrevet 13. Endestopafbryderen 34 aktiveres af på kæden 16 fastgjorte palknaster 35. Bevægelsen af klemmemekanismen 11 eller 12 fra tilførselspositionen 25 til foldepositionen 26 styres af fotocellerne 31,32 og 35 endestopafbryderen 33.Moreover, the apparatus only partially shown has all additional parts and mechanisms known per se which are necessary for the operation of the apparatus, such as e.g. an electric control means with sensors in the form of photocells 31,32 and end-stop switches 33 and 20 34. The photocells 31,32 located in the supply position 25 serve, in particular, for sensing the movements of the operator's hands in the area of the clamping mechanism 11 or 12, as well as sensing their coating state. . The end stop switch 33 located in the area of the upper race 38 in the belt conveyor 10 serves to control the working cylinder 29 and thus to control the opening movement of the clamping mechanisms 11 or 12 in the folding station 26. The end stop switch 33 is actuated by the upper race 38 of the belt conveyor 10. laundry piece Wl. The end stop switch 34 located in the region of the upper top 39 of the chain 16 serves to disengage the chain drive 13. The end stop switch 34 is actuated by the pawls 35 attached to the chain 16. The movement of the clamping mechanism 11 or 12 from the feed position 25 to the folding position 26 is controlled by the photocells 31. 32 and 35 the limit switch 33.

148921 5148921 5

Remtransportøren 10 og kædedrevet 13 drives fortrinsvis af en elektromotor, idet driften af kædedrevet dog sker over en i og for sig kendt kobling. Omløbshastighederne for remtransportøren 10 og kædedrevet 13 er fortrinsvis lige 5 store.The belt conveyor 10 and the chain drive 13 are preferably driven by an electric motor, however the operation of the chain drive takes place over a coupling known per se. The orbital speeds of the belt conveyor 10 and the chain drive 13 are preferably equal to 5 large.

Arbejdsmåden for det viste apparat er følgende:The operation of the apparatus shown is as follows:

Apparatets betjeningsperson griber et vasketøjsstykke W, f.eks. et håndklæde, jfr. fig. 1, i de to forreste hjørner, spreder dets forreste kant og skubber den ind i den i til-10 førselspositionen 25 værende klemmemekanisme 11 under samtidig nedtrykning af klempladen 18, så denne kant udstrakt ligger an mod klemmemekanismens tilretningskant. Denne operation tillige med den påfølgende tilbagetrækning af betjeningspersonens hænder og dermed fastklemningen af den for-15 reste kant af vasketøjsstykket W i klemmemekanismen sker under foldning af det tidligere på samme måde i den anden klemmemekanisme 12 indklemte vasketøjsstykke Wl. Hvis fotocellen 32 angiver, at vasketøjsstykket W er i klemmemekanismen 11, og fotocellen 31 at betjeningspersonen har truk-20 ket sine hænder tilbage fra klemmemekanismen 11, samt endeafbryderen 33 at den bageste kant af det tidligere indgivne vasketøjsstykke Wl er ført bort over denne, indkobles driften af kædetrækket automatisk, og derved bevæges klemmemekanismen med vasketøjsstykket W fra tilførselspositionen 25 25 til foldepositionen 26, og klemmemekanismen 12 fra folde positionen 26 til tilførselspositionen 25, idet bevægelsen standses ved aktiveringen af endestopafbryderen 34 af den på kædedrevet 13 anbragte palknast 35. Før den nævnte bevægelse af klemmemekanismerne 11 og 12 sker imidlertid desuden 30 den ligeledes af endestopafbryderen 33 indledede, maskinelle . åbning af den i foldepositionen 26 værende klemmemekanisme 12 for at lægge den forreste kant af vasketøjsstykket Wl nøjagtigt på dettes bageste kant.The appliance operator grabs a laundry piece W, e.g. a towel, cf. FIG. 1, in the two front corners, its leading edge spreads and pushes it into the clamping mechanism 11 in the feed position 25 while simultaneously depressing the clamping plate 18 so that this edge extends abut the clamping edge of the clamping mechanism. This operation, together with the subsequent withdrawal of the operator's hands and thus the clamping of the leading edge of the laundry piece W in the clamping mechanism, takes place during folding of the formerly similarly clamped laundry piece W1 in the second clamping mechanism 12. If the photocell 32 indicates that the laundry piece W is in the clamping mechanism 11, and the photocell 31 that the operator has withdrawn his hands from the clamping mechanism 11, and the end switch 33 that the rear edge of the previously filed laundry piece W1 is passed over it, automatic operation of the chain pull, thereby moving the clamping mechanism with the laundry piece W from the feed position 25 to the folding position 26, and the clamping mechanism 12 from the folding position 26 to the feeding position 25, the movement being stopped by the activation of the end stop switch 34 of the pawl drive 13 placed however, said movement of the clamping mechanisms 11 and 12 also takes place 30, also the machine, initiated by the end stop switch 33. opening the clamping mechanism 12 in the folding position 26 to place precisely the leading edge of the laundry piece W1 on its trailing edge.

Claims

146921

1. Apparatus for folding laundry pieces several times, in particular for folding small laundry pieces, and with a clamping mechanism (11,12) arranged in a first bending folding station over a belt conveyor (10), which can be moved in succession, one after the other. from a supply position (25) for the laundry piece to a folding position (26) spaced therefrom and back to the supply position (25). whereby the leading edge 10 of the laundry piece is clamped in one of the clamping mechanisms (11, 12) by clamping plates (18) and abutments (19), and the remaining part of the laundry piece after movement of the clamping mechanisms can be carried to the folding position (26) under a folding bridge for conducting a first fold along a fold line across the direction of movement (28) of the belt conveyor (10), characterized in that: (a) the apparatus has two clamping mechanisms (11, 12) located at a distance corresponding to the distance between the folding position (26). ) and the supply position (25), 20 (b) that the supply position (25) for laundry items (11,12) lies in front of a turning roller (27) disposed on the belt conveyor (10) on this side, and (c) that the distance (A) of the clamping mechanisms (11,12) folding position (26) 'lies so far from said turning roller (27) in the belt conveyor (10) in the direction of its movement (28) that the conveying distance therebetween can provide such a great resistance to reciprocating movement of a standing laundry piece (W1) in contact with said conveyor line with said front portion such that it can be held indelibly on the belt conveyor (10).

Apparatus according to claim 1, characterized in that the two clamping mechanisms (11, 12) are arranged between and with their ends fixed to parallel spaced chain drives (13).