US3183798A

US3183798A - Machine for manufacturing bag packages

Info

Publication number: US3183798A
Application number: US242138A
Authority: US
Inventors: Kuhnle Paul
Original assignee: FR Hesser Maschinenfabrik AG
Current assignee: FR Hesser Maschinenfabrik AG
Priority date: 1961-12-14
Filing date: 1962-12-04
Publication date: 1965-05-18
Anticipated expiration: 1982-05-18
Also published as: DE1847268U; CH394780A

Description

May 18, 1965 P. KUHNLE' MACHINE FOR MANUFACTURING BAG PACKAGES 3 Sheets-Sheet 1 Filed Dec. 4, 1962 y 18, 1965 P- KUHNLE 3,183,798

MACHINE FOR MANUFACTURING BAG PACKAGES Filed Dec. 4, 1962 3 Sheets-Sheet 2 FIG. 2

FIG; 4-

May 18, 1965 P. KUHNLE MACHINE FOR MANUFACTURING BAG PACKAGES 3 Sheets-Sheet 3 Filed Dec. 4, 1962 FIG. 6

FIG. 3

United States Patent 2 Claims. for. 93 s This invention is concerned with a machine for manufacturing bag packages, especially soft packages of thin and flimsy packaging materials, with pouring spouts from blanks of packaging material which are individually fed to a folding mandrel and folded around the latter in the production of the bag packages.

It is known to prefabricate the pouring spouts of metal and to apply them tothe packages, preferably to the narrow side walls of the latter, in such a way that they can be pivoted out of the confines of the packages for discharge of the contents of the latter.

This method of applying the spouts to the packages is conventionally used for packages of stiff paper or cardboard, but cannot be employed in this simple form in the case of packages of soft and flimsy packaging materials such as thin foils and paper, since such packages are not strong enough to hold the pouring spouts and, moreover, are very easily torn. It has, therefore, already been proposed to first attach a reinforcing patch of cardboard to the inside of one of the walls of the package before insertion of the spout into this wall.

An object of the present invention is to provide a machine for the manufacture of these reinforced packages which is of simple construction and is reliable in operation.

A further object of the invention is to provide a machine which enables the reinforcing patches to be applied to the blanks of packaging material, from which the bag packages are to be formed, as the blanks are being fed into the machine.

The invention will be fully understood from the following description of a preferred embodiment of a machine according to this invention shown in the accompanying diagrammatic drawings.

In these drawings:

FIGURE 1 is a side view of the machine partly cut away,

FIGURE 2 is a plan view of the machine shown in FIGURE 1,

FIGURE 3 is a view taken on the line IIIIII of FIGURE 1 showing part of the machine,

FIGURE 4 illustrates in side view a device for inserting the pouring spouts into the packages,

FIGURE 5 is a plan view, on a larger scale, of an anvil used in the insertion of the spouts into the packages,

FIGURE 6 is a perspective view of a bag package, produced by the machine shown in FIGURES 1 to 5, with a pouring spout which is shown closed in this figure, and

FIGURE 7 is a perspective view of the bag package shown in FIGURE 6 with the pouring spout opened.

In the machine illustrated in the drawings, the bag packages 12 are formed on a machine of the kind described and illustrated in United States Patent No. 2,257,- 689 of T. Jungmayr. A machine of this kind comprises an intermittently rotatable mandrel wheel 9 having mounted thereon a plurality of radially projecting folding mandrels 8 which, upon rotation of the wheel 9, are moved in turn to the individual working stations of the machine. At the first working station I, a blank b of packaging material is'folded by means of a folding box 7 into U-shape around the folding mandrel 8 concerned Patented May 18, 1965 at this station and is then formed into a tube 1 by folding down of its upstanding sides. A closure 20 is formed by folding in the end of the tube 2 projecting beyond the end of the mandrel 8 and this represents the top of the final filled and closed bag package 12.

The individual blanks b are severed from a web 1 of packaging material by means of a periodically operating severing

device

10, 11. The web 1 of packaging material is advanced intermittently, each time through the length of one blank, from a supply reel 2 by means of a pair of

draw rollers

5, 6, the leading end of the web being cut off by the severing

device

10, 11 to form a bag blank each time the web has been advanced through one blank length.

Arranged along the path of feed of the web are two further pairs of

draw rollers

40, 41 and 32, 33 which are driven continuously through

chain drives

42 and 43 respectively from a drive motor (not shown). The roller 41 of the first pair of

draw rollers

40, 41 has associated therewith an adhesive-applying unit 30 which applies adhesive to the web 1 of packaging material at the

parts

34, 35 and 36 which, during the formation of the bag on the folding mandrel 8, form the longitudinal seam and the closure 20 of the package. Secured to a spindle 37 are a disc 44 and segments 45 and 46, all of which, upon rotation of the spindle 37, receive adhesive from an associated cylinder 47 which dips into adhesive contained in an adhesive container 38. Upon further rotation of the spindle 37, the adhesive is transferred from the disc 44 and the segments 45, 46 to the web 1 of packaging material. To ensure that the layers of adhesive on the web 1 at the

parts

34, 35 and 36 are uniform, there is provided in the upper part of the adhesive container 38 a stripper roller 48 which is in contact with the cylinder 47. The spindle 37 carrying the segments 45, 46 and the disc 44, and the cylinder 47 are driven in correlation with the feed of the web 1 so that they perform one revolution per each blank length fed in. To this end,

toothed wheels

50, 51 and 52 are respectively mounted on the roller 41, which is driven through the chain drive 42, on the spindle 37 and on the cylinder 47, these toothed wheels engaging with each other.

In order that the bag packages, which are made of soft and filmsy packaging materials such as thin foils or paper, may have a greater rigidity at the parts thereof where the pouring spouts are to be provided, a reinforcing patch 22 constituted by a piece of cardboard is adhered to each of the bag blanks b in the web 1 of packaging material at the part where the spout is to be inserted.

For this purpose, there is secured on the spindle 37 a further segment 53, which, when the web 1 is advanced, applies to each of the parts to be reinforced a spot 31 of adhesive of an appropriate area for the reinforcing patch. A piece of cardboard constituting the patch 22 is then placed on this spot 31 and pressed thereagainst by the pair of

draw rollers

32, 33 as the web 1 is moved forwards.

The reinforcing patches 22 are severed by means of a rotary knife 23 and a stationary knife 24 from a web 21 of cardboard issuing from a supply reel 27. This web 21 is advanced by means of a pair of

draw rollers

25, 26, the web 21 being fed through a length corresponding to one reinforcing patch 22 each time the web 1 packaging material is forwarded through one blank length, the patch 22 then being cut off from the web 21 by the knife 23. The drive for the rotary knife 23 and the pair of

draw rollers

25, 26 is derived from the spindle 37, being transmitted from this spindle through a chain drive 55 to the spindle 56 of the rotary knife 23. Fixedly mounted on the spindle 56 is a toothed wheel 57 which, to produce the drive of the

draw rollers

25, 26, transmits rotary movement through a toothed wheel 53 to a toothed wheel I by two pairs of endlessly circulating

conveyor belts

26,7

29 which bring them into face-to-face contact with the spot 31 of adhesive on the web 1 of packaging material. The two conveyor belts of the pair 28 run around the roller 32 of the pair of

draw rollers

32, 33, which is spring-urged against the Web 1 of packaging material, and around a further roller 61, and the two conveyor belts of the pair 29 run around two rollers 62 and 63. Two of the runs of these

belts

23, 29 are opposed to one another and extend at an inclination to the plane of feed of the web 1 of packaging material. The

conveyor belts

28, 29 are driven from the roller 32, which is connected through

toothed wheels

64 and 65 to the roller 33, at the same speed as the pair of

draw rollers

32, 33, so that, as the reinforcing patches 22 are fed on to the web 1 of packaging material, there is no relative movement between the patches and the Web. The two rollers 62 and 63 are connected together by toothed wheel 66 and 67.

At station II of the bag package-forming machine, a pouring spout 13 is inserted into each of the blanks b which have been provided with reinforcing patches 22 and then formed into a tube t as described above.

conventional apparatus 14 of the type such as is described in detail in United States Patent No, 2,300,099 of H. Brucker may be used for this purpose. In this apparatus 14 which is driven from the main machine through a shaft 76 and

bevel gears

71, 72, the spouts 13 are formed from a metal strip, are separated from the latter and then inserted from below into the alreadyreinforced part of the tube t on the folding mandrel 8 concerned at station H (see FIGURE 4). An anvil 16 inserted into each of the folding mandrels 8 serves as a guide and counter support during insertion of the pouring spout. Each anvil 16 has formed therein two wedgeshaped recesses 74 which guide the side wings of the spout 13 during insertion of the latter into the blank I), and a groove 17 which, when the folding box 7 ascends, co-operates with a knife 18 secured to the folding box 7 in such a way that a transverse incision 19 is formed in the blank 12 at the point later to be occupied by an opening for the pouring spout (see FIGURES 6 and 7).

Finally, it is to be noted that the spot 31 of adhesive for sticking the reinforcing patch 22 on the web 1 of packaging material can consist of a plurality of dots or strips of adhesive.

I claim: I

1. A machine for manufacturing bag packages of thin flexible material comprising a periodically rotatable mandrel wheel including folding mandrcls, first feeding means for feeding a continuous web of thin, flexible packaging material along a prescribed path towards a particular station past which said folding -mandrels successively pass, means adjacent the path of the web of material for periodically applying adhesive material to specific portions of said web of packaging material as said web is moving towards said station, said portions including first portions enabling the closure of folded bag packages and second portions for the adherence of reinforcing patches, first severing means disposed in the path of said continuous web of packaging material for periodically severing said continuous web of packaging material to form packaging blanks having regions with adhesive material, second feeding means for feeding a continuous web of reinforcing material, second severing means disposed in the path of feed of said continuous web of reinforcing material for periodically severing said web of reinforcing material to form successive reinforcing patches, means for synchronizing said first and second feeding means and said first and second severing means whereby one reinforcing patch is formed for each of said blanks, conveyor belt means extending between said second severing means and the path of said packaging material and located between the mandrel wheel and the means for applying adhesive material to said web, said conveyor belt means including two parallel runs of belts extending upwardly at an angle from the path of travel of the Web of material, means for driving the conveyor belt means such that said parallel runs of belts are driven in the same direction and with a component extending in the direction of advancement of said web of packaging material so that the belts receive the reinforcing patches one by one from said second severing means and convey the patches in synchronism to the individual blanks now carrying adhesive material, means elastically urging one of the runs of the belts into contact with the first feeding means to cause the reinforcing patches to be applied with force against the individual blanks in a Zone in which the blanks carry adhesive whereby each blank before reaching said folding mandrelhas a permanently afi'lxed reinforcing patch in a prescribed location, means associated with the folding mandrels for folding thus rein forced blanks around said folding mandrels to form reinforced packages, and means cooperating with each folding mandrel as the samepass the next successive station after rotation of the mandrel wheel for inserting a pouring spout into the reinforced package on the folding mandrels in the region of the reinforcing patch.

2. A machine for manufacturing bag packages as claimed in claim 1, in which the second feeding means includes a pair of draw rollers and means for driving said rollers periodically in correlation with the feed of the web packaging material to the folding mandrels so that the web of reinforcing material is advanced through a distance equal to the length of one reinforcing patch each time the web of packaging material is advanced through a distance equal to the length of one blank.

References Cited by the Examiner UNITED STATES PATENTS 2,257,689 9/41 Iungmayr 93-12 2,395,352 2/46 Staude et al. 9336 2,589,769 3/52 Brucker l13l 2,778,546 1/57 Klausmann 222-531 2,966,832 1/61 Vergobbi 93-12 FRANK. E. BAiLEY, Primary Examiner.

Claims

1. A MACHINE FOR MANUFACTURING BAG PACKAGES OF THIN FLEXIBLE MATERIAL COMPRISING A PERIODICALLY ROTATABLE MANDREL WHEEL INCLUDING FOLDING MANDRALE, FIRST FEEDING MEANS FOR FEEDING A CONTINUOUS WEB OF THIN, FLEXIBLE PACKAGING MATERIAL ALONG A PRESCRIBED PATH TOWARDS A PARTICULAR STATION PAST WHICH SAID FOLDING MANDRELS SUCCESSIVELY PASS, MEANS ADJACENT THE PATH OF THE WEB OF MATERIAL FOR PERIODICALLY APPLYING ADHESIVE MATERIAL TO SPECIFIC PORTIONS OF SAID WEB OF PACKAGING MATERIAL AS SAID WEB IS MOVING TOWARDS SAID STATION, SAID PORTIONS INCLUDING FIRST PORTIONS ENABLING THE CLOSURE OF FOLDED BAG PACKAGES AND SECOND PORTIONS FOR THE ADHERENCE OF REINFORCING PATCHES FIRST SERVING MEANS DISPOSED IN THE PATH OF SAID CONTINUOUS WEB OF PACKAGING MATERIAL FOR PERIODICALLY SEVERING SAID CONTINUOUS WEB OF PACKING MATERIAL TO FORM PACKAGING BLANKS HAVING REGIONS WITH ADHESIVE MATERIAL, SECOND FEEDING MEANS FOR FEEDING A CONTINUOUS WEB OF REINFORCING MATERIAL, SECOND SEVERING MEANS DISPOSED IN THE PATH OF FEED OF SAID CONTINUOUS WEB OF REINFORCING MATERIAL FOR PERIODICALLY SEVERING SAID WEB OF REINFORCING MATERIAL TO FORM SUCCESSIVE REINFORCING PATCHES, MEANS FOR SYNCHRONIZING SAID FIRST AND SECOND FEEDING MEANS AND SAID FIRST AND SECOND SEVERING MEANS WHEREBY ONE REINFORCING PATCH IS FORMED FOR EACH OF SAID BLANKS, CONVEYOR BELT MEANS EXTENDING BETWEEN SAID SECOND SEVERING MEANS AND THE PATH OF SAID PACKAGING MATERIAL AND LOCATED BETWEEN THE MANDREL WHEEL AND THE MEANS FOR APPLYING ADHESIVE MATERIAL TO SAID WEB, SAID CONVEYOR BELT MEANS INCLUDING TWO PARALLEL RUNS OF BELTS EXTENDING UPWARDLY AT AN ANGLE FROM THE PATH OF TRAVEL OF THE WEB OF MATERIAL, MEANS FOR DRIVING THE CONVEYOR BELT MEANS SUCH THAT SAID PARALLEL RUNS OF BELTS ARE DRIVEN IN THE SAME DIRECTION AND WITH A COMPONENT EXTENDING IN THE DIRECTION OF ADVANCEMENT OF SAID WEB OF PACKAGING MATERIAL SO THAT THE BELTS RECEIVE THE REINFORCING PATCHES ONE BY ONE FROM SAID SECOND SERVING MEANS AND CONVEY THE PATCHES IN SYNCHRONISM TO THE INDIVIDUAL BLANKS NOW CARRYING ADHESIVE MATERIAL MEANS ELASTICALLY URGING ONE OF THE RUNS OF THE BELTS INTO CONTACT WITH THE FIRST FEEDING MEANS TO CAUSE THE REINFORCING PATCHES TO BE APPLIED WITH FORCE AGAINST INDIVIDUAL BLANKS IN A ZONE IN WHICH THE BLANKS CARRY ADHESIVE WHEREBY EACH BLANK BEFORE REACHING SAID FOLDING MANDREL HAS A PERMANENTLY AFFIXED REINFORCING PATCH IN A PRESCRIBED LOCATION, MEANS ASSOCIATED WITH THE FOLDING MANDREL FOR FOLDING THUS REINFORCED BLANKS AROUND SAID FOLDING MANDRELS TO FORM REINFORCED PACKAGES, AND MEANS COOPERATING WITH EACH FOLDING MANDREL AS THE SAME PASS THE NEXT SUCCESSIVE STATION AFTER ROTATION OF THE MANDREL WHEEL FOR INSERTING A POURING SPOUT INTO THE REINFORCED PACKAGE ON THE FOLDING MANDRELS IN THE REGION OF THE REINFORCING PATCH.