NO133498B

NO133498B -

Info

Publication number: NO133498B
Application number: NO3744/71A
Authority: NO
Inventors: S Petersen; H-E Kuenzel; G D Wolf; G Nischk; R Bierling; D Steinhoff
Original assignee: Bayer Ag
Priority date: 1970-10-13
Filing date: 1971-10-12
Publication date: 1976-02-02
Also published as: BE773818A; CS200248B2; SE380523B; DE2050092C3; YU34682B; IL37888A0; FI56967B; DE2050092B2; AU452967B2; SU448647A3; JPS551261B1; IE35723B1; FI56967C; AT312628B; NO133498C; GB1333284A; ZA716807B; ES398118A1; FR2110395A1; IE35723L

Description

Anordning for fastklemming av låsefliker ved maskin for oppbretting av plane emner av kartong eller lignende materiale til esker. Device for clamping locking tabs on a machine for folding flat blanks made of cardboard or similar material into boxes.

Foreliggende oppfinnelse vedrører en The present invention relates to a

anordning for fastklemming av låsefliker device for clamping locking tabs

ved maskin med stempel og dyne for oppbretting av plane emner av kartong eller by machine with stamp and quilt for folding flat blanks made of cardboard or

lignende til esker som har en bunn og på similar to boxes that have a bottom and top

denne hovedsakelig vinkelrett anordnede this mainly perpendicularly arranged

sidevegger, hvorav i det minste to vegger side walls, of which at least two walls

som støter sammen i et hjørne kan sammenkobles ved hjelp av en fra den ene sideveggs endekant utstikkende låseflik som that butt together in a corner can be connected by means of a locking tab protruding from the end edge of one side wall which

etter bretting kan innskyves i en sliss i den after folding can be inserted into a slot in it

annen sidevegg og har et låseøre som samvirker med slissens ene kant og sperrer other side wall and has a locking lug that interacts with one edge of the slot and blocks

låsefliken i dennes innførte stilling. the locking tab in its inserted position.

Ved slike esker hender det ofte at låseflikens låseøre slipper sitt grep med slissens låsekant. Hensikten med oppfinnelsen With such boxes, it often happens that the locking ear of the locking tab loses its grip with the locking edge of the slot. Purpose of the invention

er å skaffe en slik anordning ved dynens is to provide such a device at the cover

åpning at låseørets grep med slisskanten opening that the locking lug grips with the slit edge

blir betydelig forbedret, hvilket oppnås is significantly improved, which is achieved

med en anordning som i henhold til oppfinnelsen karakteriseres ved at der ved den with a device which, according to the invention, is characterized in that there by it

del av dynens åpning hvor eskens sidevegger er blitt brettet opp og låsefliken er part of the duvet's opening where the side walls of the box have been folded up and the locking tab is

innført i slissen er lagret et svingbart introduced into the slot is stored a swivel

trykkorgan som er anordnet til å bli presset mot den slissede sideveggs utside ved pressure means which is arranged to be pressed against the slotted side wall's outside by

det parti av denne bak hvilket låseflikens the part of this behind which the locking tab

låseøre befinner seg, og derved bevirke en locking ear is located, thereby causing a

så sterk innbøyning av sideveggen og det so strong bending of the side wall and that

bakenforliggende låseøre, at låseøret, når rear locking lug, that the locking lug, reaches

esken har forlatt trykkorganet, inntar en the box has left the pressure device, one assumes

effektiv sperrestilling innenfor slissens effective locking position within the slot

kant. Umiddelbart etter låseørets innskyv-ning gjennom slissen er låseøret og låsefliken plane, hvorfor låseørets girep på edge. Immediately after the locking ear is inserted through the slot, the locking ear and the locking tab are flat, why the locking ear's gear on

slisskanten er usikkert, men etter at trykk- the slit edge is uncertain, but after the press-

organet har bøyet låsefliken kommer denne til å helle noe innover i forhold til låsefliken forøvrig, så at låseøret bedre griper tak i slissens ene kant, dvs. danner en mere effektiv sperring av låsefliken. the body has bent the locking tab, this will tilt somewhat inwards in relation to the rest of the locking tab, so that the locking ear better grips one edge of the slot, i.e. forms a more effective blocking of the locking tab.

Disse og øvrige detaljer og fordeler, som utmerker oppfinnelsen er nærmere beskrevet i det følgende under henvisning til tegningene som viser et eksempel på anordningen i henhold til oppfinnelsen. These and other details and advantages which distinguish the invention are described in more detail below with reference to the drawings which show an example of the device according to the invention.

Fig. 1 viser i perspektiv en maskin for Fig. 1 shows in perspective a machine for

oppbretting av esker. folding of boxes.

Fig. 2 er et perspektivisk røntgenbilde av dynen med en i dynens åpning opp-brettet eske av den kjente utførelse, som hår en bunn med hovedsakelig vinkelrett på denne anordnede sidevegger, som par-vis kan sammenkobles ved hjelp av låsefliker som danner forlengelser av eskens langsider og kan innskyves i slisser i eskens kortsider samt kan låses ved at låséflikene er forsynt med låseører som er beregnet på å hake seg fast til slissenes ene kant. Fig. 3 er et perspektivisk detalj riss av et trykkorgan i henhold til oppfinnelsen og av en spesiell utførelse av vedkommende eske, hvor slissen har en skrått oppadrettet del og låsefliken har en motsvarende skrå kant, idet trykkorganet befinner seg i en uvirksom stilling. Fig. 4 viser samme riss som fig. 3 med den forskjell at trykkorganet nå er i eh virksom stilling, hvor det trykket mot sideveggen og derved bøyer inn det bakomliggende låseøre. Fig. 2 is a perspective x-ray of the duvet with a box of the known design folded up in the opening of the duvet, which has a bottom with side walls arranged mainly perpendicular to this, which can be connected in pairs by means of locking tabs which form extensions of the box long sides and can be inserted into slots in the short sides of the box and can be locked by the locking tabs being fitted with locking ears which are designed to hook onto one edge of the slots. Fig. 3 is a perspective detail view of a pressure device according to the invention and of a particular embodiment of the box in question, where the slot has an obliquely upward part and the locking tab has a corresponding oblique edge, the pressure device being in an inactive position. Fig. 4 shows the same drawing as fig. 3 with the difference that the pressure member is now in eh active position, where it presses against the side wall and thereby bends in the rear locking lug.

Som vist i fig. 1 består maskinens ho-veddeler av et stativ 20, en dyne 22, en dobbeltvirkende trykkluftsylinder 24, et av sylinderen drevet stempel 26, en ilegger 28, As shown in fig. 1, the main parts of the machine consist of a stand 20, a cushion 22, a double-acting compressed air cylinder 24, a piston driven by the cylinder 26, an inserter 28,

et magasin 30 for emner og et trykkluft- a magazine 30 for blanks and a compressed air

og vakuumsystem 32 for drift av stemplet og ileggeren og for frembringelse av va- and vacuum system 32 for operating the piston and the depositor and for producing vacuum

kuum i ileggerens sugeføtter. kuum in the loader's suction feet.

Stemplets hode 34 og dynens åpning The head of the piston 34 and the opening of the cover

33 passer mot eskens bunn 35, som det fremgår av fig. 2. Ved den øvre ende av dynens 22 åpning er der anordnet styre-organer, som reiser emnets sidevegger 36, 38 og samtidig fører låseflikene 40 inn i slissene 42 når emnet trykkes ned i dynens åpning. Esken trykkes deretter vi- 33 fits against the bottom 35 of the box, as can be seen from fig. 2. At the upper end of the quilt's 22 opening, there are arranged control members, which raise the workpiece's side walls 36, 38 and at the same time lead the locking tabs 40 into the slits 42 when the workpiece is pressed down into the quilt's opening. The box is then pressed vi-

dere ned gjennom dynens åpning og ut ved dens nedre ende, hvor esken frigjøres fra stemplet. Som det fremgår av fig. 2 er låseflikene forsynt med låseører 41, som med sin kant samvirker med slissens 42 ene kant, den såkalte låsekant, og sperrer lå- down through the cover's opening and out at its lower end, where the box is released from the plunger. As can be seen from fig. 2, the locking tabs are provided with locking lugs 41, which with their edge cooperate with one edge of the slot 42, the so-called locking edge, and block the

sefliken i slissen. the safety tab in the slot.

Ved den i fig. 2 viste eske er sideveg- By the one in fig. 2 shown box is side way-

gene 38 på kjent måte forlenget oppover til en klaff 43 som er beregnet på etter ilegging av varen å bøyes innover. gene 38 in a known manner extended upwards to a flap 43 which is intended to be bent inwards after the product has been inserted.

Ved de to slisser 42 i hver sidevegg At the two, there are 42 slots in each side wall

38 inndeles denne i en mellomdel og to sidedeler. Når emnet trykkes ned i dy- 38 this is divided into a middle part and two side parts. When the item is pressed down in the dy-

nens åpning, trykkes sidedelene noe inn i forhold til mellomdelen, slik at slissene åp- nen's opening, the side parts are pressed somewhat in relation to the middle part, so that the slits open

nes for å motta låseflikene. Etter innfø- nes to receive the locking tabs. After inserting

ringen sitter dog låseflikene 40 temmelig usikkert i slissene 42 ved at låseørene 41 the ring, however, the locking tabs 40 sit rather precariously in the slots 42 because the locking ears 41

ikke med sikkerhet ligger an med sine kan- not with certainty related to their can-

ter mot slissenes kanter, dvs. en viss fare er tilstede for at låseflikene ved eskens følgende håndtering, f. eks. ved fyllingen, te against the edges of the slots, i.e. there is a certain risk that the locking tabs during the subsequent handling of the box, e.g. at the filling,

helt eller delvis skal trekkes ut fra slissene. must be fully or partially extracted from the slots.

I det følgende beskrives oppfinnelsen tilpasset en spesiell type av vedkommende eske, nemlig den som er vist i fig. 3 og 4. In the following, the invention is described adapted to a particular type of box in question, namely the one shown in fig. 3 and 4.

Likesom esken i fig. 2 er esken i fig. 3 Like the box in fig. 2 is the box in fig. 3

og 4 forsynt med låsefliker og slisser, men forskjellen består i at slissene ved eskene i henhold til fig. 3 og 4 har en skrått oppadrettet øvre del og låseørene har en motsvarende skrått rettet låsekant. Esken har to slisser og låsefliker ved hver kortside, and 4 provided with locking tabs and slots, but the difference is that the slots at the boxes according to fig. 3 and 4 have an obliquely upwardly directed upper part and the locking lugs have a corresponding obliquely directed locking edge. The box has two slots and locking tabs on each short side,

men for enkelhets skyld beskrives den valg- but for the sake of simplicity, the optional

te utførelsesform for oppfinnelsen bare i forbindelse med en sliss og en låseflik. t embodiment of the invention only in connection with a slot and a locking tab.

I fig. 3 og 4 er en segmentformet to- In fig. 3 and 4 is a segment-shaped two-

armet vippe 44 svingbart lagret på en ho- arm rocker 44 pivotally stored on a ho-

risontal, aksel 46. Vippens nedre arm 48 horizontal, shaft 46. The rocker's lower arm 48

danner en i eskens bevegelsesbane innsky-tende hake 50 som under påvirkning av den nedadgående eske er anordnet til å forms a hook 50 interposed in the box's path of movement which, under the influence of the downward-moving box, is arranged to

svinges ut fra denne bevegelsesbane un- is swung out from this path of movement un-

der samtidig svingning av vippen. Vippens øvre arm 52 er vesentlig kortere enn den nedre arm og er i vippens hvilestilling be- where at the same time oscillation of the rocker. The rocker's upper arm 52 is significantly shorter than the lower arm and in the rocker's rest position is

liggende utenfor eskens bevegelsesbane, lying outside the box's path of movement,

som vist i fig. 3. Den øvre arms frie ende 54 danner trykkorganet i henhold til oppfinnelsen, og i nærheten av denne ende er den øvre arm på sin overside forsynt med et tversgående spor 56, slik at enden 54 as shown in fig. 3. The free end 54 of the upper arm forms the pressure device according to the invention, and near this end the upper arm is provided on its upper side with a transverse groove 56, so that the end 54

danner et tungelignende fremspring. Spo- forms a tongue-like protrusion. Spo-

ret er hensiktsmessig noe skrått anordnet for lettere å kunne passe inn mot den skrå slissdels øvre kant 58. Vippen er hensikts- right is suitably somewhat obliquely arranged in order to be able to fit more easily against the upper edge of the inclined slot part 58. The tilt is expedient

messig påvirket av en fjær i retning mot sin hvilestilling, som bestemmes av en stop- influenced by a spring in the direction towards its rest position, which is determined by a stop-

per 60. per 60.

Når haken 50 påvirkes av esken, svin- When the chin 50 is affected by the box, the pig-

ges vippens øvre arm inn mot det parti av sideveggen 38 som befinner seg neden- the upper arm of the rocker is moved towards the part of the side wall 38 which is located below

for den skrå slissdel 58. Den skrå slissdels øvre kant griper derved inn i sporet 56 for the inclined slot part 58. The upper edge of the inclined slot part thereby engages in the groove 56

og tvinger armen 52 innover mot sideveg- and forces the arm 52 inwards towards the side

gen 38, slik at denne bøyes kraftig inn- gene 38, so that this bends strongly in-

over, samtidig som det bakomliggende låse- above, while the rear locking

øre 62 bøyes innover like kraftig. Den øvre arm 52 svinges med nedover et stykke un- ear 62 bends inward just as strongly. The upper arm 52 is swung down a distance

der forpakningens passasje og slipper der- where the package's passage and release there-

etter automatisk sitt grep med den skrå after automatically his grip with the oblique

slissdel 58. Låseøret 62 fjærer delvis til- slot part 58. The locking ear 62 partially springs to

bake, men stanser dog i en stilling hvor det er tilstrekkelig skråttstillet i forhold til den skrå slissdels øvre kant for å ligge sikkert an mot denne og derved effektivt sperre låsefliken i dens innførte stilling. Oppfinnelsen er naturligvis ikke be-grenset til den viste og beskrevne utførel-sesform, men kan varieres på mange for-skjellige måter innenfor oppfinnelsens ramme, angitt ved de etterfølgende på-stander. back, but stops in a position where it is sufficiently inclined in relation to the upper edge of the inclined slot part to rest securely against this and thereby effectively block the locking tab in its inserted position. The invention is of course not limited to the embodiment shown and described, but can be varied in many different ways within the framework of the invention, indicated by the subsequent claims.

Claims

1. Device for clamping the locking

flaps by machine with piston and quilt for folding flat blanks of cardboard or the like into boxes having a bottom and on this mainly perpendicularly arranged side walls, of which at least two walls that collide at a corner can be connected by means of one from the one side wall's end edge protruding locking tab which, after folding, can be inserted into a slot in the other side wall and has a locking eye which cooperates with one edge of the slot and locks the locking tab in its inserted position, characterized in that at the part of the quilt's opening where the box's side walls has been folded up and the locking tab (40) is inserted into the slot (42), a pivotable pressure member (44) is stored which is arranged to be pressed against the slotted side wall (38) outside at the part of this behind which the locking tab's locking ear (41 ) are located, and thereby cause such a strong bending of the side wall and the rear locking lug, that the locking lug, when the box has left the pressure device, assumes an effective locking position within for the edge of the slot.

2. Device as stated in claim 1, characterized in that the pressure member (44) stored at the cover's opening is designed as a two-armed rocker whose one arm (50) in the rocker's rest position extends into the box's path of movement and is arranged to be influenced by the passing box for swinging the rocker, and whose other arm (52) in the rest position of the rocker is located outside the box's path of movement and is directed in the opposite direction in relation to the box's direction of movement, which other arm (52) is intended to press against and bend in the slotted side wall (38) and the locking eye (41), when the rocker is swung under the influence of the box by the rocker's first arm (50).

3. Device as stated in claim 2, characterized in that the rocker is spring-loaded to return to its rest position which is determined by a stop (60).

4. Device as stated in claim 1, 2 or 3, for such boxes where the slot in one side wall has an obliquely upwardly directed upper part, against one edge of which (58) the locking eye (41) made with a corresponding obliquely directed edge of the locking tab (40) is designed to rest against for locking the locking tab in the inserted position, characterized by the fact that the pen's other arm (52) is arranged to be pressed against the side wall below the slanted upward-aligned slot part during the box's downward movement, so that the lower edge of the slanted slot part and the rear-facing locking ear are bent in past the upper edge of the slot (58).

5. Device as stated in claim 4, characterized in that the rocker consists of a segment which below the rocker's shaft (46) is designed with a projection that forms the rocker's first lower arm (50) and which above the rocker shaft forms the rocker's second upper arm arm (52) which, on its upper side and near the upper end of the segment, is provided with a groove (56) which extends somewhat obliquely across the upper side of the arm while forming a tongue-like end part (54, 56) which, after the upper arm swings in, ning against the side wall (38) is intended to be gripped by the upper inclined edge (58) of the slot so that the box during its downward movement forces the rocker to swing about its axis, whereby the tongue-shaped end part (54, 56) of the upper arm (52) is moved into the side wall and inside the rear locking eye, the tongue-shaped end part being carried by the slot edge (58) until it again swings out from the box when the slot edge (58) releases its grip on the said end part.