DE1101927B - Device for the production of bags or the like that hang together in a row from paper, plastic or the like. - Google Patents

Description

Device for the production of bags connected in a row od. The like. Made of paper, plastic or the like. For the production of bags, sacks or the like. Like. Made of paper, plastic, metal foils or the like. Is mostly used when laying flat Hose workpiece the bottom by pulling the hose workpiece ends to form the corner folds and then folding over the bottom side folds Cross or block bottom formed. In addition, it is also known for a splayed one To fold a piece of tubing onto a block bottom.

When manufacturing bags from paper or the like with an order or Foil layer made of heat-sealable material, which is located on the inside of the bag is located, one usually welded the block bottom with a continuous to the outside excellent longitudinal bar. This middle longitudinal bar divided the floor into disadvantageous way.

In addition, there was the disadvantage of all these known manufacturing processes that the bag od. The like. Manufactured individually one after the other in several stages of work had to be and one made by one in a special hose machine Tube workpiece ran out, from which the bag is then finished in a floor laying machine became.

To the disadvantage of a continuous middle bottom sealing bar fix, one has already proposed bag shapes in which the side walls with longitudinal hose welding strips arranged on both sides around a uniform Bottom folded around. Powerful machines for the production of such However, bags have not yet become known.

The present invention aims to provide a new device for the production of bags, sacks, drinking cups, bottles or the like Row of U-shaped folded paper webs, plastic films or the like. With a partial or complete inner layer in the form of an order or a film made of thermoplastic Material.

These bags are said to be made to be seamless Have bottom with lateral folding tips and by pressing together and heat sealing be formed by transverse sealing strips in the bag widths adapted intervals.

The invention consists in that several moldings together with each on these attachable press plates for the bag bottoms and on the side of the press plates pivotally arranged folding plates as well as each pressing between these and sealing bars are strung together such that they can be moved to one another in such a way that at pulled apart moldings and separate pressure and welding bars first a section with the press plates attached to the pivotable folding plates the web or film is foldable in a U-shape, whereupon the shaped bodies are pushed together and the compressed sealing bars the simultaneous formation of a series of contiguous Bag or the like.

In a preferred embodiment, you can between the press and sealing bars respectively cutting bars or the like.

According to the invention, the shaped bodies can be arranged in rows around a horizontal one Axis can be rotated and moved in the vertical direction and above this turnstile, the Press plates with the lateral folding plates for the U-shaped folding as well as the ones in between Pressing and welding bars outside of the starting web guided over the shaped bodies arrange in sections.

With the device according to the invention, the bags can od. Like. Produce in rows in a simple manner in one operation. the The performance of such a device is very high, and it is extremely reliable, where you od the bag. Like. In one station without prior formation of a Can produce hose directly from flat paper webs.

The drawing shows, for example, embodiments of the subject matter of the invention, namely Fig. I a top view of a starting web for block bottom bags, Fig. 2 a diagrammatic representation of a U-shaped folded starting web as the first Work stage, Figure 3 a diagrammatic partial representation of a fully folded row of bags, Fig. 4 is a side view corresponding to Fig. 3, Fig. 5 is a cross section of the Fig. 4, Fig. 6 a top view of an exit path for drinking cups, `- Fig. 7 is a diagram of a finished drinking cup, Fig. 7a is a diagram. one filled. Bottle, Fig. 7b a cross section through the upper end of Fig. 7a, Fig. 8a a schematic side view of the main parts of the devices according to the invention in FIG the starting position, Fig. 8b a cross section VI-VI of Fig. 8a, Fig. 8c a schematic top view of Fig. 8 a, Fig. 8 d is a schematic top view of the Fig. 8 a after the bag has been folded, Fig. 9 is a schematic top view of one with a Bottom sheet provided row of bags, Fig. -10 a front view of the folding strips with switching devices for U-shaped folding, Fig. 11 is a front view of the pressure strips and cutting strips acting between the shaped pouches, Fig. Figure 12 is a side view of Figure 11, Figures 13 and 14 corresponding to Figures 11 and 12 Diagrammatic representations of the pressure bars and cutting bars, Fig.15 a die Devices according to Fig. 10 and 11 including a compilation, Fig. 16 another Embodiment of pressure bars, Fig. 17 is a schematic overall side view of a Device according to the invention, Fig. 18. A schematic representation of a filling and Closing device, Fig. 19 a schematic representation of the closing process a bag, Fig. 20 is a schematic representation of a fully filled and closed Bag on a larger scale.

For the production of bags, sacks or the like, drinking cups, bottles or other container comes z. B. od on one side with heat-sealable material. like., z. B. plastic, coated or with a corresponding film overlay provided paper, plastic sheet, metal foil or the like. For use. From an exit train sections 1 are divided into a size corresponding to the desired production or trimmed accordingly and, for example, without any training of creasing or folding lines or the like. Supplied for processing. Such a starting path section 1 is shown in Fig. 1, where you can see the dash-dotted lines and dashed lines can be omitted for the present example. The shift side made of plastic or the like is located at the bottom of this starting track.

In the first stage of work, the subdivided or trimmed Starting sheet, as shown in Fig. 2, folded in an archetype, with the layer side facing the inside of this U-shaped folded body is located. In this U-shaped Folding corresponds to the width of the top 2 z. B. the width of a bag bottom, and the two long sides 3 and 4 have the height in the vertical directions of a finished bag.

At certain intervals, approximately at the height of the arrows 5, will this U-shaped folding body in each case over the entire length of the side walls 3 and 4 with simultaneous pushing together these to be welded or otherwise long sides to be connected and the bag body in between. It the result is a folded body, as shown in Figs. 3 to 5, of several connected, Bag bodies 7 open at the bottom and longitudinal strips B between them. When pushing together in the direction of arrows 6 are in direct connection to the longitudinal strips narrow side walls 9 and 10: des; Beut @ l @ k.rper formed while looking at the same time Form upwardly protruding triangular folding tips 11 at the upper end. These each adjoin the bag bottoms 12 directly.

After dividing the longitudinal strips 8 between the bag bodies 7 result in the desired individual bags, in which you can use the longitudinal strips and the bottom lobes still lay flat and the bottom in any way can be provided with a cover sheet.

In this way you can have several adjacent, z. B. produce up to ten bags or even more depending on the size, each with a self-contained, ie undivided, seamless bottom. The width of the initial web 1 determines the number of bags or the like located next to one another. The lines drawn in Fig. 1 result when you open the folded bags again. These lines enclose the bag body walls 7a, longitudinal strips 8, bag walls 9 and 10, bag bottom 12 and fold tips il. In the case of thicker material for the output webs, this can be pre-grooved or provided with fold lines after trimming in a zuitzliohen operation, e.g. B. according to the lines drawn in Fig. 1.

The size and shape of the initial track as well as the subsequent Align shaping and folding and pushing together the U-shaped structures depending on the type and shape of the bags to be formed, which can be of any size can be produced. Small bag-like containers, e.g. B. for cigarettes, cigarillos etc., one can possibly also in rows of more than. ten individual bags in one Make a row.

Fig. 6 shows a starting path for the production of paper cups, which, for example, have the shape shown in Fig. 7. The exit path is ever according to the paper thickness either with creasing or folding lines as shown in Fig. 6, or it can be fed smoothly to the processing devices.

In this initial shape, those intended for the bottom 12 are followed Parts around which the U-shaped folding takes place, the hose walls 7B, which with the longitudinal sealing seams which are conically led to the essentially square base 12 8a result in a conical tube of round cross-section. As described above, can fit a large number of adjacent cups to the width of the original track be distributed.

The U-fold takes place in the width of the bottoms 12, and with a conical shape Sealing bars are placed between the cup bodies while pushing them together the longitudinal sides 8a welded together. To reinforce the cup body can an edge 701 can be flanged at the top before or after the cup folding. If necessary recesses 702 can be provided so that at the upper end of the folded edge the outward facing tabs mutually extend the longitudinal sealing seams 8a can overlap. The thermoplastic coating is on the inside of the cup so that it is turned outward at the folded edge 701.

These cups have a square base from the cup body expands conically upwards, can be made of relatively thin paper that does not have to have the character of a cardboard box. The ones formed during the folding triangular folding lobes are also here at the bottom posted and this covered with a bottom sheet. Such cups are compared to the previous ones mostly used cardboard cups very cheap to manufacture. One can also extend the cup body upwards so that after filling this one upper Can get degree.

If one forms the hose walls 7B very much in relation to the width long, although these can be too slightly conical or straight to the outside, bottle-shaped containers 7F can also be produced, which one after After forming inner folds 705 (see Fig. 7b), fill with an overarching Closing strip 704 or closed in any other way (see Fig. 7a).

As Fig. 8a to 8c show, bags, bottles, Cups or the like lying next to one another according to the method described above Shaped body 14 in size and shape of the individual container in use. Above everyone Molded body 14 is located in each case a press plate 15 which can be moved up and down both sides of each press plate 15 are each folding plates 16 hinged, with which the U-shaped folding of the starting web 1 is effected. The exit lane 1 is located between the molded bodies 14 and the press plates 15. The press plates 15 are each suspended on bearing bodies 17 which sit on a common axis 18.

Pressure and welding strips 19 are arranged between the molded bodies 14, which with the bearing bodies 20 are also placed on the continuous axle 18 can. From the U-shaped folded starting web are pushed together the Shaped body 14, bearing body 17 and 20 with the pressing and folding plates attached to them 15, 16 and pressure and welding strips 19 in the direction of arrows 21 the bag body educated. This pushing together takes place during the respective merging the pressing and welding bars 19, so that at the end of this operation, the molded body 14 and the pressing and sealing bars 19 are in the position shown in Fig. 8d. The bag bodies 7 with their walls 7a., 9, 10 are around the molded body 14 and the above-protruding folding lobes 11 with a uniform base at the top formed, and the longitudinal strips 8 lie between the pressing and welding strips 19 or 8a the bag or cup body.

= Ulan can use the longitudinal strips 8 or 8a- in any way between connect the pressure bars 19 to one another. A thermoplastic is most suitable Connection when choosing a thermoplastic inner coating on the original sheet to be processed. The pressure and welding strips 19 are for this purpose in a suitable manner to the touching edges heated for as long as pressed in between Longitudinal strips 8 or 8a a pressure is exerted. Thanks to the thermoplastic inner coating the longitudinal strips 8 or 8a are welded into one another by the action of heat.

With a subdivision of the pressure and welding bars 19 in their longitudinal direction in such a way that in the center there is a gap for carrying out a cutting device can arise at the end of the bag or cup folding at the same time a subdivision of the bag takes place approximately in the middle of the longitudinal strips 8 or 8 a.

The bottom pressure plates 15 can be provided at the ends with approaches or the like, which correspond approximately to the size of the triangular lobes 11 so that, in conjunction with the widened pressing and welding strips 19 in the area of the triangular lobes, the floor lugs 11 are also welded into itself when they are heated can be.

Following the completion of the bags, you can use them with your Shaped bodies 14 push together in rows in itself.

Figure 9 shows how the completely folded rows of bags can be covered with a continuous base sheet 13 after the longitudinal strips 8 or 8ca and the triangular folding tips 11 have been folded over on the floors. This bottom sheet 13 can each have perforations between the individual containers, in which case the bottom sheet can then be divided in the area of the perforations by moving the bags apart. It is also possible, after gluing the continuous bottom sheet, to cut through this between the individual bags with suitable cutting devices, or individual bottom sheets can be glued to the individual bags or the like.

Fig. 10 shows an embodiment of the device for performing the U-shaped fold. Here is a press plate 15, as already described, with Folding plates 16 hinged on both sides. Between the shaped body 14 and the pressing plate 15 with the attached folding plates 16 is the one to be processed Track section 1 made of paper or the like. The press plate 15 is seated on a press ram 24, which runs out into the bearing body 17, which sits on the axis 18. On the press ram 24 a guide body 25 is pushed on, the bottom an open recess 26 and has a bore 27 for receiving a spring 28 upwards. About in the middle axes 29, 30 are carried out on both sides in suitable bores.

When sliding down the guide body 25 z. B. with the down depressed axles 29, 30 against the action of the spring 28 press the lugs 31 on the folding plates 16 and move them by 90 ° down into the dash-dotted lines Positions. The initial web inserted between the molded body and the press plate 15 1 is held at the same time on the molded body 14 with the press plate 15 von .den folding plates 16 folded down in a U-shape into the one shown in Figure 2 Position. Step after or during this U-fold or towards the end of it the pressure bars 19, which are primarily designed as welding bars, in action. A practical embodiment of these pressure bars 19 is shown in FIG. Here, these strips 19 are rotatably placed on the axes 29 or 30. These If necessary, axes29,30 can simultaneously use the device shown in Fig. 10, namely the guide body 25, operate. The pressure bars are still at the same time attached to bearing bodies 20 with steering levers 32. It turns out to be beneficial to articulate the steering levers 32 on the lugs 33 attached to the folding strips 19.

According to the present illustration in Figs. 11 and 12, no uniform pressure strips 19 are to be provided between the bag bodies to be formed, but these pressure strips are subdivided, as Fig. 12 shows, in such a way that two narrow pressure strips 19, 19a sit next to each other leaving a central space . Each of these pressure bars 19, 19a is attached to the bearing body 20 with a steering lever 32, 32a. Knives 34, 35, which are also placed on the axles 29, 30, are located between the pressure strips 19, 19a.

In Fig. 13 the pressure strips 19 and 19 a with the intermediate ones Knives 34 and 35 again shown graphically, namely in the starting position. The compression of the longitudinal strips 8 or 8a of the bags and at the same time cutting through these longitudinal strips after the bags have been finished runs in the manner described below: The axis 18 on which the bearing body 20 are put on, remains in place. The axes 29 and 30 are perpendicular to moved down. As a result of the non-shifting articulated lever 32 when sliding down of the axes 29 and 30, the pressure bars 19 or 19a pivoted downwards by 90 °, and The welding process begins with training as welding bars (see Fig. 14 and dash-dotted lines Positions in Fig. 11 and 12).

Simultaneously with this movement process, the knife 34 and 35 by turning the grooved axes 29 and 30 also pivoted downwards by 90 °, and when they are pushed over one another they cut the longitudinal strips 8 or 8a of the bags od, like. In the middle. The grooves on which the knives 34, 35 are keyed, are denoted by 36.

The folding strips 19 and 19a are trained as welding strips when processing thermoplastically coated material in a suitable manner heated. It proves to be advantageous on the touching edges of the Provide folding and sealing strips 19 and 19a separate heating strips while the main part of these bars is made of a non-conductive material.

The pressure and welding bars 19 and 19a are each in the below swiveled together positions, while the one shown in Figure 10 Guide body 25 with its lugs 31 at the top of the pressing plates 15 .die Has moved folding flaps 16 downwards. This end position of the two tools is shown in Fig. 15. Are between the pressure and welding bars 19, 19 a the Knives 34 and 35 are provided, they are in the end position in the cutting positions, d. i.e., after completing a11 these operations in the position shown in Fig. 15 are the individual bags formed or 4-l. already separated from each other.

Fig. 16 shows another embodiment for pressing and Welding bars, namely here these bars 19b are arranged to be rotatable about axes 37, 37a and have control tracks 38, 38a at the top; with downward pivoting control levers 39, 39a, which lie on the control tracks 38, 38a, you can press and As the drawing shows, move sealing bars 19b against one another. If necessary the pairs of knives can also be operated in the manner described above.

In connection with the devices according to the invention, which too Modifications are possible, the bags can be of any size and design with continuous operation in rows in horizontally adjacent or circularly arranged stations are filled and closed. Possibly you can also arrange the device for making the bags in a circle and then have the filling and sealing device connected horizontally.

Fig. 17 shows an embodiment for a superlative arrangement. the three main processing stations 1, 1I and III are at angles of 122 ° to each other arranged offset in a circle, but one can also subdivide one another of the stations by 90 ° or by any other angle, possibly also unequal Choose angle. In processing station I, which is at the top right in Fig. 17, the web to be processed is drawn off from a paper roll 45 between rollers 46 and divided to length with the knives 47.

If the divided web sections 1 are to be pre-grooved, then inserted between the knife 47 and the station I folding or creasing devices. If necessary, a further cutting station can also be switched on, for example to Incorporate punched holes into the starting web 1.

The pre-processed web 1 is located in station I under the press plate 15 and here hinged lateral folding flaps 16 to enable the U-shaped Folding. Above is the guide body 25, which when sliding down with his Projections 31 causes the folding flaps 16 to fold. Around axes 29, 30 the welding bars 19 and 19a are attached pivotably downwards. The pressing the press plate 15 over the plunger 24 can be rotated about the axis 48 with a Cam 49 are caused.

The U-shaped folding of the original web is done in rows side by side molded bodies 14. These molded bodies 14 can each consist of a the bag shape adapted housing part 50 exist, the support body 51 on two Axes 52 can be placed laterally displaceable. With cushioned at the top at 53 The support bodies 51 are supported by bolts 54 on the central hexagonal dome body 55.

The molded body housings 50 are each provided with a head piece towards the outside 56 equipped with an axis 57 guided in the support body 51 with the guide rollers 58 is controlled on a cam 59.

A spring 60 causes the guide roller 58 to rest at all times on the cam 59. Between the processing station I and another Processing station II offset by 120 ° are folding devices 61 for folding over of the bag-tube longitudinal strips 8 or 8a and further folding devices 61a for Turning over the upper triangular folding lobes 11 switched on.

If possible, the machining parts of station I and below Put the circumstances of station II interchangeably for different sizes and shapes.

After turning over the bag strips 8 or 8a, they get to the Bags or the like attached to molded bodies 14 to the processing station II. Be here the bottom sheets 13 glued or over the folded triangular folds 11 sealed. The bottom sheets are fed by a paper roll 62 with rollers 63, 64 deducted. The conveyor roller 64 has several switching pins distributed over the circumference 65, which with the switching tooth 66 of a switching disk 67 in the direction of the arrow 68 can be rotated by certain sections, always the same to be able to apply wide strips 71 to the row of bags. The drive of the switching disc can e.g. B. on a conveyor belt, such. B. V-belt 69, from a power source 70 made from. The upstream of the roll 62 in the required width Floor sheet strips 71 can be divided with the knives 72 and over the entire Rows of bags are brought up above the molding head piece. Be on it with the plunger 73a and the cam 73, the head pieces 56 are pushed up, the bottom sheet strips 71 being pressed firmly onto the bag bottoms and there in the case of a heatable design of the head piece 56 or of the counterpressure body 74, it is sealed will. If the bottom sheets are to be glued on, an adhesive application device must also be used provide.

There is also the possibility of running into the running path 71 of the soil sheets Switch on perforating devices to cut the continuous bottom sheet between the to perforate individual bags. You can then pull the bottom sheet apart Separate in the area of the perforations between the individual bags or the like (not shown).

When using a continuous, non-perforated base sheet when switching from station II to station III, this is between the bags or the like. Divided by a cutting device 75. In the station II, the shaped body head pieces 56 are pushed outwards with the cam disk 59, detaching the bags from the molded body housings 50. With their openings after at the top, the finished bags 7 pass between guides 76 which are on a conveying device 77 are slidably attached. By moving these guides 76 z. B. the bags firmly clamped between these guides: The bags are now between these guides 76 in rows below filling devices 78, of which in Fig. 18 three rows are shown schematically. With these filling devices you can the bags in rows with liquid, e.g. B. milk to be filled. The operation the filling devices in the individual rows and the forward movement of the conveyor device 77 with the rows of bags on it must be mutually coordinated.

After the bags are filled, they go under the one shown in Fig. 18 closure devices 79 shown schematically. The closure devices can for example consist of two expanding mandrels 80, with which the upper closure strip 81 is formed, which is then sealed with heat sealing jaws 82, for example (see Fig. 19). After the bags have been closed, they are dispatched.

A finished bag, e.g. B. for solid or liquid or pulpy Substances, is shown in Figure 20. On the upper and lower floors are the triangular corner tabs 11, 11a. At the top you get the continuous heat-sealed End strip 81, while the lower bottom 12 is carried out without interruption. The bag longitudinal strips 8 can be seen on the two narrow sides with the device according to the invention can be in any type, size and shape z. B. Pouch or bags (according to Fig. 20) or cups (according to Fig. 7) or bottles (according to Fig. 7a) or the like. and for solid, powdery, granular, liquid, semi-liquid, Use pasty or otherwise prepared substances or bodies of any kind.

Claims (3)

PATENT CLAIMS: 1. Device for the production of bags or the like connected in a row from a U-shaped folded paper web, plastic film or the like with a partial or complete inner layer in the form of an order or a film made of thermoplastic material, the bags with a seamless base and lateral folding tips are formed by pressing together and heat-sealing transverse sealing strips in the Beatel widths adapted spacing, characterized in that several molded bodies (14) together with pressing plates (15) for the bag bottoms that can be placed on them and folding plates ( 16) as well as pressing and welding bars (19) acting between them are mutually displaceably strung together in such a way that when the moldings (14) are drawn apart and the pressing and welding bars (19) are separated from one another, first when the pressing plates (15) with the pivotable folding plates (16) are in place ) a section nitt (1) the web or film is foldable in a U-shape, whereupon the simultaneous formation of a series of connected bags or the like by pushing together the molded bodies (14) and the compressed sealing strips (19). 2. Device according to claim 1, characterized in that between the pressing and welding bars (19, 19a) in each case Cutting strips (34, 35) or the like. Are arranged. 3. Apparatus according to claim 1, characterized in that the shaped bodies (14) are arranged in rows rotatable around a horizontal axis and displaceable in the vertical direction and above this turnstile (55, 50) the press plates (15) with the lateral folding plates (16) for the U-shaped fold and the pressing and welding strips (19) lying therebetween are arranged outside of the starting web section guided over the shaped bodies (14). Documents considered: Belgian Patent No. 521344; U.S. Patent No. 2,691,259.