DE1907575A1 - Method and device for forming and attaching hinge valves to bags - Google Patents

Description

EDUARD LORENZ · BERNHARD SEIDLER. MARGRIT SEIDLER DIPL. ING. HANS KARL GOSSEL DR. JUR. LüDER WITT

8 Munich 22, Widenmayerstraße 23 Telephone [0811} 297194/297834 Postscheck: Munich 170280 Bank account: Bayerische Vereinsbank 34.Φθ6 / ΐίΚΐΚοηίο 862019

^Your zWgffetTuary 1969

Our sign day

Windmöller & Hö 1 scher, Lengerich i.W.

Method and apparatus for forming and attaching hinge valves on sacks.

The invention relates to the production of sacks with a relatively wide base and one incorporated therein Filling valve, which is narrower than the bottom and designed as a so-called hinge valve, which is known to consist of a Valve hose and a hinge leaf connected to this consists and is fixed by means of the hinge leaf in the bottom fold of the sack. The hinge leaf relieves the Glued connection of the bottom fold especially during the filling process and also forms a pocket for inserting the Outer valve tube end turned back after filling.

The hinge valve is formed and attached to the sack when laying the bottom fold in bottom laying machines, which are equipped with additional processing stations for this purpose are. The procedure so far has been that in the floor laying machine first the hinge leaf, which is doubled by folding, with its fala edge directed towards the inside of the cheek, with its lower wing towards the corner of the still open Bottom fold is glued on, whereupon the Vontile hose, with the The folded edge of the hinge leaf is flush on the upper wing of the Hinge leaf is glued on.

Q0983W1 1 15

To carry out this known method are thus Two additional processing devices are required in the floor laying machine, which are in the transport direction of the Sacks to be provided with bottom folds are to be arranged one behind the other. The attachment of two additional processing devices however, requires a considerable extension of the machine frame and the die for the large sack workpieces Sacks of flooring machine conveying conveyor around the to provide the necessary space for these processing devices. As the sacks in the flooring machine are moved forward transversely have to be and the latter accordingly has a large overall width, the result is a considerable overall Increase in the weight and space requirements of the floor laying machine and thus a considerable increase in manufacturing costs the same.

The invention is based on the object of a method and devices for forming and attaching hinge valves to create sacks that only need an additional processing station in the floor planting machine and thus reduce the manufacturing costs and the space requirements of the same compared to the known machine considerably.

To achieve this object, the procedure according to the invention is such that first of all the valve tube with the hinge leaf is connected, whereupon the prefabricated hinge valve with its hinge leaf on the corner impact of the open Bottom fold of the sack is glued on.

This process only requires an additional processing station in the floor laying machine, which is the prefabricated Has to glue the hinge valve to the open bottom fold; because the hinge valve is now prefabricated by independent of the floor planter.

009834/1 1 1 5

Since the bottom of the sacks is laid in the floor-laying machine during the continuous passage of the sacks through the same, the continuous prefabrication of the hinge valves in the working cycle of the floor-laying machine is also advantageous. For the continuous formation and attachment of the hose valves is therefore proceeded in a further embodiment of the invention so that a Scharnierblattbaiin and a valve hose line lying on top of one another at the same speed land through common transverse perforation are continuously divided into pieces of equal length, tand that the valve hose path then, diirola lay dersellien in © ine loop, opposite KS ^ Sraasportriclitiing about half the spacing of the transverse perforations opposite the hinge leaf balm and aa their la bs ^ as the cable run lifted from the SeharnieAlattbahn! "läelis with an Elets st off order, which is each stranded on the Quex -gSE'fiQjr-P.tion dor Venuilschlauclibahn "begins uwl siöii about ü ^ se · the lialbo length of the bearing distance s of the? Qiierpesfor & tioaea extends so that when the Ventilselilaue '& Qstoi sre £ fii © Scasxsierblattbaim are put down. 06 ^ ⁷ © 2, ls a diareh. Q, ⁱ yiei = p © s ^j f © E? Q, ti © Jiiea bog ^ esistefs piece of the TentiiseiilamcKöaas snr half © sit sines cteek Qmes'perfcrationer. Begreastexi piece of the ¹ Seiiarsis ^ lattfeaha v @ 2? b "jmd @ n, whereupon the leading half of the foremost hinge leaf piece is folded over by folding onto the trailing half that is connected to the valve tube piece and the finished hinge valve is removed from the Qiier perforations Ventilechlauchbahn \ iad the Schamierblattbahn is torn off and stuck in the bottom cover in the same direction as the sack, with the folded half of its hinge leaf, on the corner of the open bottom fold of the sack.

The ones to carry out this preferred variant of the method According to the invention, a suitable device consists essentially from the following parts:

0 0 9 8 3 4/1115

a) Two pairs of pulling rollers that are spaced apart from one another and rotate at the same circumferential speed for the simultaneous advancement of the hinge leaf spell and the valve hose strip resting on the same in transport direction.

h'i A circulating perforating device known to sieve in the transport direction behind the front pre-viewing roller =

pas.r _; dit zi ^ \ qiier extends over the hinge leaf web and the approaching ^: -zrtil8ohlaiÄoIibahri, sum laying fe Querp-srfcr-av: 3nei; in the mentioned tracks in one of the

required :! lio-T-c -: _ .. Tüitilschlauehl length corresponding part

c) \>: ά1 ^ Ώ ± ιΣΌΐΐ2'Λ is asr-sicii the valve hose path between -.:■?-■;:· l? sri-ii / dorTorrloköaüg and the rear front si ehr oll en = - 7.- ΛΓ aiiiü Ι-ΐ ^ ΐ:,. the V ^ ZitilschlEUclibahn in a loop 7o :: solciier Lf.n ^ -? that the valve hose path, opposite uor cohar ^ d ^ rblattrolizi us, is about half the length of the part. irj:; vtab £ ta: '

■ i) 7: L :: i <· - IClcsbs ^^ ci'f'sutitragSv'Gi-riGlituzig within the clever = - £ ^: ä der ¥ eidvilj ^ iili.iiGiisali2i ziüs üiaxzüge © ines Elestoffäiiftragc aiii those of the Sciisirnierblattbahn lifted Irläolie the Vöntilsciilaiichbaiiii, of each of the cross-= · pGS'iOra'fexoii letiitsrer- öegisnt and spanning about EPilfta dsi ^{^:} asn limited fO2i Spsrperforationen valve · =

Ellft

• 3) A pair of traiispoit rollers downstream of the liiir & eran, : 1h synchronism ax the irorarfce- = in the flooring machine v / egten Basques and with greater circumferential speed as the pairs of rotating folding cylinders with folding pliers for folding and folding the hinge leaf

009834/1115

pieces, for tearing off the hinge valves from the valve tube sheet and the hinge sheet sheet and for conveying them into the movement area of the sacks in the floor laying machine, in connection with a gluing machine ■: ~: i Applying glue to the folded hinge sheet half.

This device is simple in structure. It allows the hose valves to be formed and glued on continuously on the bottom fold of the sacks. The simultaneous advancement and perforation of the valve tube web and the hinge leaf web guaranteed between the two pairs of pulling rollers exact compliance with the dimensions and shape of the hose valve, even at high production rates the folding cylinder ensures that the hinge valves are precisely glued to the bottom fold of the sack.

The glue applicator that holds the valve tube sheet has to be glued, consists according to a further feature of the invention from a cross within the valve track loop to the valve tube extending tube with a leg of facing the valve tube path, opening towards the inside of the Hohr Ball pressure valves, in the manner of the known ballpoint pens, drive means, preferably a thrust curve, for and moving the tube back in the transverse direction against the valve hose path and one connected to the tube under positive pressure standing glue container. Such an adhesive applicator can be conveniently accommodated with its tube within the relatively small loop of the valve hose path and press.

009834/1115

The invention is explained in more detail below with reference to the drawing explains. From the images shown on the drawing shows:

1 shows the configuration of the hinge valve,

Fig ;. 2 the open bottom fold of the sack with the glued on Hinge valve,

3 shows the ready-to-use valve corner of the sack,

Fig. 4 is a schematic elevation view of the device device for the continuous formation and attachment of hinge valves in the bottom folds of sacks,

Fig. 5 is a plan view of the valve tube web and

the hinge leaf web in the area of the device according to FIG. 4,

6 shows a longitudinal section through the device for applying adhesive to the valve tube web.

According to FIG. 1, the hinge valve consists of a valve " hose 1 and a shell doubled by folding and turning over ;: nierblatt 2. These two parts are in connected in such a way that the valve tube on the one hand is flush with the folded edge of the hinge leaf etxia and on the other hand the open hinge leaf edge protrudes by a piece 5 ο As FIG. 2 shows, the hinge valve is with the lower cover layer of its hinge leaf in the Ueise on the corner fold 4 of the bottom fold of the sack 5 glued on that with the folding edge of the hinge leaf

009834/1 1 15

flush valve clip opening facing the interior of the sack. By folding the ^{side envelopes 6, 6 1} along the fold lines 7 '7' lying outside the valve hose side edges , as shown in FIG. 3, the hinge valve is enclosed in the bottom fold of the sack, so that the valve hose piece 3 protruding over the hinge blade is laterally seen as Millende the bottom fold protrudes <>

The Vorr-i escaped for the continuous manufacture and sticking "bes. The Scliami'.rirentile 1 to 3 on the open bottom fold of the. Sacks 3 has naeia fig = 4- swei with distance from each other angeordas'oe IForsishroIleappairare S ₉ 8" and 9 ? 9 " for even. ¥ cr '-" * - bswegen oinez ¹ uster-eii Schar-nierblattbaim IO and one ouf ckw yellow aittig ai2.füegeadea Ventilselilauclibalin 11 in M ¹ Z- ~ τιΐ, ζοτ- 1 ~ piöiitimg a on - Bis SckarniGrblat ^ TsGlia 10 "bes'fesM; vca-r -: ;;;!: - ;; ·: - ..? ■.-EiasS2? Location on paper or imiiPtstoff

"from oiner 2iio! r ^: .;

GcJItC tiQ Λ'ΰ ι 1 ^Γ

ia cm pour BsfensiiiSep Heise from eino: y pp.r - ^ - y """olor ^ :: ;;; ¹ ';; / ¹ /' - £ oli © abalia 12 made «di-j in ώΐ, ηοϊ ¹ 3ö! Ilanel & .siGi ^: ^ \ l;: _" ja ^{:; - ': -:} 3 ίο ^

13 ίο ^ ϋΙίνίΑίΦΐΐΊ SiEi Sslilaoeli gefo ^ rü: -7ird 'isid derail

«I

In fesn ^ poE ^ iofrfcung a \ ~ Cii ¹ odor- si-jisehen the two 7orzi roller pairs a S ₅ 8 ° 3 9? 9 ° is eizie iaalaiafeade Perfox-iervo-r-rich-15 .gugeorSaet, Öl® both lcilines 10, 11 on the same side with f © Nations 16 versielit, the rope spacing t s.uf- © iniaad ©? follow "Hierdiircii both tracks are of equal length, coinciding pieces divided _s but still, with the perforations siisasmeniiäagsno Ber pitch corresponds to the required length of ¥ entilscb.lamches the clapper.

009834/1115

Between the two pairs of pulling rollers 8, 8 ¹ ; 9 * 9 'and behind the perforating device 15 are in the area of. Valve hose track 11 deflection rollers 1? and 18 are provided, which continuously lift the valve hose web from the hinge leaf web and place it in a loop 19. By adjusting the deflection roller 18 in the direction of the arrow, the total length of the loop 19 is approximately equal to half the pitch t of the transverse perforations 16. Due to the detour that the valve hose web 11 has to cover when passing through the loop 19 in relation to the straight hinge leaf web 10, a shift of the valve hose web with respect to the hinge leaf web occurs opposite to the transport direction a, which is approximately equal to half the pitch t. The valve hose pieces 1, which are limited by transverse perforations, are opposite to the hinge leaf pieces 2, which are also limited by transverse perforations, by half their length opposite to the transport direction a. offset so that the leading hinge leaf piece: half is covered by the trailing valve tube piece.

A drill hole extends inside the loop 19. 2o, that ,. vj ± ® the longitudinal section according to Fig. 6 can be seen with ", a series of Eugeiventilen 21, whose balls 22 like.," in Engels & hTQxheTn partly protrude from the valve housing. The Bohr -20 is closed at one end and, at the other end, is connected to an overpressure element container 23, which supplies the "Bohr glue". The excess pressure of the glue presses the balls 22 on ifc * ea seat and thus keeps the ball valves closed. The drill 20 is attached to the free end of a lever 24, which is rotatably mounted in the machine and by means of the roller lever 25 and the thrust cam 27 attached to the axis 26 of the perforating device 15 in the machine cycle The tube 20 is attached to the lever 24 so that the row of ball pressure valves is inside

00983A / 1 1 1 5

the loop 19 of the valve hose web 11 faces. the Thrust curve 2? is shaped so that the Bohr 2o with its ball valves each on a transverse perforation 16 is placed on the valve hose web 11 and only after a length of the valve hose web corresponding to approximately half the pitch distance t has passed back from the latter takes off. By placing the Eu geIn 22 on top of the Draw roller 9 supported ventir hose valve 11 open the Valves 21 and carry adhesive strips 28 respectively on the open the front half of each valve hose section »

The pulling roller pairs 8, 8 ', 9, 9' are followed by a folding cylinder 29 which is tangent to the plane of movement E + E of the webs Io, 11 on the one hand and to the plane of movement F + P of the sacks 5 in the floor laying machine on the other hand. The EaI 2 · cylinder 29 runs with it. the transport speed of the bags in their transport direction b, which is larger than the circumferential speed of the pairs of pulling rollers 8 * 8 '; 9, 9 ¹ · It is equipped with one or more folding pliers 30 on the circumference and works with a folding knife roller J1 auaammen. The speeds of the folding cylinder 29, the, FalzmesserwQize 31 and the pulling roller pairs 8, 8 '· 9, 9' as well as the distance χ the latter from the folding device 29 to 31 are measured so that each of the leading hinge leaf piece 2 on the edge of the resting on it Valve hose piece, pressed by the folding knife roller 31 into one of the folding pliers, thereby querytalzt along the fold line 32 indicated by dash-dotted lines in FIG. 5 and grasped together with the valve hose piece 1. The folding device 29 to 31 is assigned a guide plate 33 which, as can be seen in FIG. 4, folds the leading half of the hinge leaf piece onto the other half of the same, which is connected to the valve tube piece. In the area of the circumference of the folding cylinder and in the direction of rotation of the same behind the guide plate 33, a glue unit 3 ^ is provided, which. The folded half of the hinge leaf on that of the folding cylinder

009834/1115

- 10 - ■ "■ / ■■ ': ..

advanced hinge valve with an adhesive application · - provides. ; _;

The hinge leaf web 10 and the valve tube web 11 are, as shown in FIG. 5, lying centrally on top of one another of the pulling roller pairs 8, 8 '; 9, 9 'is advanced in transport direction a at a speed which - as already specified - lower than the transport speed, with of the sacks 5 in the flooring machine in the transport direction b are moved forward in such a way that one valve length per sack is preferred - ^

As a result, the folding cylinder rotating at the higher peripheral speed tears off the hinge sheet piece with the glued-on valve sheet piece along the transverse perforations of the webs Io, 11, as shown in Fig. 5 by the column j and ζ, and sticks that The hinge valve that has just been torn off the tracks with the subsequently folded over and glued hinge leaf half in synchronism with the sacks 5 advanced in the floor laying machine, in the manner shown in FIG.

009 8 3 4/1115

Claims (4)

U. Claims. ill Method of forming and attaching one from a valve tube and a hinge • hinge valve in the bottom folding of sacks, characterized in that that first the valve hose (1) with the hinge leaf (2) is connected, whereupon the prefabricated hinge valve (1,2) with its hinge leaf on the corner impact (4-) of the open bottom fold of the sack (5) is glued. 2. The method according to claim 1, characterized in that a hinge sheet web (lo) and a valve hose web (11) superposed on one another moved forward at the same speed and continuously divided by common transverse perforation (16) into pieces of equal length (t), and that the valve hose web then , by laying it in a loop (19) opposite to the transport direction (a) by about half the rope distance SoharoisrtJlairf / faahxi abiGbeaen llaofee mit s Yeast material application (28) provided, w ± r & _s d @ r jew <sils es. the Eatton of the "VentilselilaiicMsalm begins tmö." siea etua the feallse position of the rope distance (t / 2) which extends% ier · »· P @ rf osatioaen, see above. ümB at the ¥ ieäei? au £ l @ g; e & der Vea ~ tiXs@kisn.sfe.balm on the Scha ^ salerblatfbaim each eia. dmrsk Qiies? p @ ^ f © rations limited Stiicfc (1) der Veatilsohlauch »- stss? Half with a perforated Piece. (2) connected to the Scliärmierblättbahn. rird%, whereupon the leading Bälfte djss ^ sweils foremost hinge leaf piece folded by folding to its trailing end, connected to the Ventilsclilauchstück half and the finished tube valve (1,2) along the Querperf collects from the ORIGINAL INSPECTED 00983A / 1115 Valve hose track and the hinge leaf track torn off and in the floor planting machine, in synchronism with the sack (5)> with the folded half of its hinge leaf on the Corner impact (4-) of the open bottom fold of the sack is glued on. 3 · "Device for carrying out the method according to the Claims 1 and 2, characterized by the following features: · ■: - ■. ■: ■: · ■■.; ■ a) Two spaced apart ^ with the same Circumferential speed of rotating pairs of pulling rollers (8, 8 '; ■ 9, "" *') to move the Hinge leaf web (lo) and the one resting on it Valve hose track (11) in transport direction (a). . b) A per se known, circumferential perforating device (15) ii transport direction behind the front pulling roller pair (8, 8 ^! ), which extends across the hinge sheet web Clo) and the overlying valve tube web (11), for making transverse perforations (16) in the named tracks at a pitch corresponding to the required valve hose length (t). ■■ ;. c) Deflection rollers (17, 18) in the area of the valve hose, track (11) between the Perfziervorrichtung (15) and the rear pair of pulling rollers (9, 9 *) for laying the valve hose web (11) into a loop (19) of such a length that the valve tube path is opposite the hinge leaf web (Io) by about half the length of the spacing (t) of the transverse perforations is offset to the transport direction (a). 009834/1115 d) An adhesive applicator (2o to 22) within the loop (19) of the valve hose web (11) for applying an adhesive coating (28) on the from the hinge leaf web (lo) . raised surface of the valve hose web, the Je-. because the latter begins at the transverse perforation (16) and extends over approximately half of the valve tube path pieces (1) delimited by the transverse perforations. e) One of the rear pair of transport rollers (9.9 ') downstream, in synchronism with the sacks (5) and moved in the floor planting machine with greater peripheral speed than the pairs of feed rollers (8, 8 ', 9 »9') rotating folding cylinder (29) with folding tongs (3o) for folding and Fold over the hinge leaf pieces (2) to tear off the hinge valves (1,2) from the valve hose web (11) and the hinge leaf web (lo) and for conveying the same into the movement area of the sack (5) in the floor laying machine, in connection with a gluing unit (34) for application of glue on the folded half of the hinge leaf. 4. Apparatus according to claim 3 »characterized in that that the adhesive application device (2o to 27) from one within the valve track loop (19) transversely to the valve hose track (11) extending pipe (2o) with a series of ball pressure valves (21,22) facing the valve hose path, Drive means (24 to 2?) For moving the Pipe in the transverse direction against the valve hose web and one pressurized adhesive container connected to the pipe (23) exists. 0 0 9 8 3 4/1115 At 5 · device according to. Claim. 4, characterized, that the tube is attached to the free end of a lever (24-) is, on whose pivot axis a roller lever driven by a thrust cam (27) rotating in the machine cycle (25) sits. - 009834/1115 Blank page