DE202022104412U1 - Device for the production of packaging chips - Google Patents

Abstract

Device (1) for producing packaging chips (20), having at least one first holding device (4) for rotatably holding a first roll (3) of a material web (2), at least one transport roller unit (5) for pulling the material web (2) off the at least one first roller (3) and for transporting the material web (2) in a feed direction (R) extending along a main axis (HA) of the device (1), at least one in the direction of the main axis (HA) between the first holding device (4 ) and the transport roller unit (5), tapering in a funnel shape in the feed direction (R) and at least one cutting device (7) arranged in the feed direction (R) behind the transport roller unit (5), the guide unit (6) for guiding through and simultaneous gathering and pressing together of the material web (2) to form a gathered strand of material (2'), the transport roller unit (5) being at least comprises two rotating, cooperating rollers (5a, 5b) which are set up for permanently deforming the shirred strand of material (2') and wherein the cutting device (7) is designed for cutting the shirred and deformed strand of material (2"), characterized in that the The device (1) also has an exchangeable funnel insert (8) designed in the manner of a spout or funnel, which is at least partially accommodated in a tapered neck section (6.2) of the first guide unit (6).

Description

technical field

The invention relates to a device for producing packaging chips, in particular cushion-like, pourable packaging chips.

State of the art

Packaging chips, which are also referred to as filling material or as so-called “loose-fill material”, are well known. Such packaging chips are usually shaped bodies that are made, for example, from a foamed polystyrene. More environmentally friendly variants of compostable packaging chips are made from plant starch, for example. However, in both of the cases mentioned, the production costs for such moldings are relatively high.

Furthermore, from the prior art, filler material particles are known which are produced from cellulose, in particular from paper. For example, there are DE 37 18 541 A1 proposes a process in which pulp, in particular waste paper, is shredded, moistened and finally formed into particles and dried. However, this method is complex and not very effective.

Corresponding devices for producing filling material particles from paper are also known. For example, the DE 10 2008 030 916 A1 such a device with which, starting from a sheet of paper, cushions can be produced, which are designed as a combination of paper strand and sleeve. A generic device for producing packaging chips is also from DE 20 2017 006 738 U1 known.

However, the devices known from the prior art for producing packaging chips or packaging cushions are generally only suitable for processing paper webs with a specific, predetermined paper thickness. Therefore, despite the solutions known from the prior art, there is still a need for devices for producing packaging chips.

Presentation of the invention

The object of the present invention is therefore to provide a device for the production of packaging chips which overcomes the disadvantages of the prior art and which is particularly versatile and adaptable for the processing of material webs of the most varied material thicknesses and is thus particularly easy to produce inexpensively of packaging chips with little technical effort. According to the invention, this object is achieved by the device according to independent claim 1 . Further advantageous aspects, details and configurations of the invention result from the dependent claims, the description and the drawings.

The present invention provides an apparatus for producing dunnage chips from a web of material. The device has at least one first holding device for rotatably holding a first roll of a material web and at least one transport roller unit for pulling the material web off the at least one first roll and for transporting the material web in a feed direction extending along a main axis of the device. Furthermore, the device has at least one first guide unit arranged in the direction of the main axis between the first holding device and the transport roller unit and tapering in a funnel shape in the feed direction and at least one cutting device arranged in the feed direction behind the transport roller unit. The guide unit is designed to guide the material web through and simultaneously gather and compress it to form a gathered strand of material. The transport roller unit comprises at least two rotating cooperating rollers which are set up for permanently deforming the gathered strand of material. The cutting device is designed to cut the gathered and deformed strand of material. According to a particular aspect of the invention, the device also has an exchangeable funnel insert designed in the manner of a spout or funnel, which is at least partially accommodated in a tapered neck section of the first guide unit.

The present device is designed and set up in particular for the production of pourable packaging chips, for example for the production of cushion-like or spring-elastic packaging chips with cushioning, damping or resilient properties, in particular with a predetermined restoring force or spring restoring force, the device being designed in particular To produce packaging chips in such a way that they can be used in bulk or as a bulk quantity. The packaging chips produced using the present device preferably have a length in a range from 30 mm to 70 mm, preferably in a range from 40 mm to 60 mm and particularly preferably around 50 mm and a width in a range from 10 mm to 20 mm, preferably in a range from 12 mm to 18 mm and more preferably around 15 mm.

In the present case, a web of material is understood to mean a web-like, thin and sheet-like material. In particular, a paper web is understood to be a material web, the paper web having a paper thickness which, in the context of the present invention, can be equated with a grammage of the paper, namely a basis weight or square meter weight or gram weight and is specified as such in "grams per square meter".

Alternatively, the web of material can also be a web-shaped film made of a plastic material. In special applications, a film can also consist of a metallic material or a mixture of plastic and metal. The web of material can also have a coating, for example a coating that brings about improved adhesion or tackiness of the surface.

The exchangeable funnel insert of the device according to the invention, which can also be referred to as an exchangeable nozzle piece or nozzle body or as an exchangeable nozzle, is to be understood in the context of the present invention as an insert piece or adapter piece that can be inserted or integrated into the guide unit or used there is. Thus, the replaceable funnel insert can also be understood as a built-in or fitting piece or as an adjustment device or as an intermediate piece or intermediate part. The funnel insert is preferably designed in one piece, that is to say it consists of one piece, and is made, for example, from a material which has a particularly smooth surface. For example, the funnel insert is made from a plastic or from metal or from a composite material.

The present guide device is preferably of essentially conical, tubular design and comprises a preferably circumferential or continuous peripheral wall. The guide device can therefore also be understood as a conical tube or tube or as a substantially conically tapering hollow body with two opposite open end faces.

Particular advantages result from the device according to the invention in that the device can be optimally set or adapted to the processing of different material webs, in particular paper webs with different grammages, by means of the funnel insert inserted into the guide unit. The device can thus be adjusted to different paper thicknesses in a structurally simple and cost-effective manner and can therefore be used in a particularly versatile manner. In particular, an application-specific adaptation is thus possible in a particularly simple manner in order to produce packaging chips of different rigidity, strength, elasticity, etc.

For example, with the device according to the invention it is possible to process different types of material webs of different material thicknesses with one and the same device simply by exchanging the funnel insert. For example, due to the funnel insert provided, the device according to the invention allows paper webs with a paper thickness or grammage in a wide range to be processed into packaging chips, for example with a paper thickness or grammage of approx. 25 g/m ² to approx. 120 g/m ² .

When using the device for producing the packaging chips, the web of material is made available as rolled goods, namely wound up on a roll, and is drawn off from this roll. The transport roller unit, which is responsible for pulling off and pulling through the material web, exerts a necessary tensile stress, which can, for example, be canceled again in the feed direction behind the transport roller unit.

During its transport through the guide unit or when passing the guide unit, the material web is gathered and compressed, specifically in a direction transverse to the longitudinal direction of the material web. Essentially, the compression results in a transformation or reshaping of the web-like or sheet-like, two-dimensional shape of the material web into a strand-like, cable-like or rod-like shape of the material strand, whereby the term "compression" can also be understood to mean that the material web is in a Direction is compressed transversely to the longitudinal direction and thus transversely to the feed direction, in particular while avoiding a guided wrapping or turning or folding of the material web, for example from the side edges, and also avoiding a guided introduction of regular fold lines.

With the funnel insert used in the guide unit, the degree of compression and thus also a thickness and/or density of the strand of material, and possibly also the elastic properties and restoring force of the strand of material, can be adjusted or adjusted.

After forming the strand of material, it is permanently deformed by rotating the two cooperating rollers of the transport roller unit compress the strand of material under pressure. In the present case, this compression is also understood as rolling or also as squeezing and can also be regarded as pressing in the broadest sense.

The replaceable funnel insert preferably forms a reducer, with a passage width of the guide unit being reduced at least in sections to a reduced passage width by the funnel insert used in the guide unit. In this way, the device can easily and simply be adapted for the processing of material webs with a smaller thickness. By using different funnel inserts, i.e. by replacing one funnel insert with another, the passage width can be optimally set and adjusted individually and application-related depending on the material thickness of the material web, for example the paper thickness of a paper web.

According to a preferred embodiment, the first guide unit is designed in particular as a funnel and has an outlet opening with a predetermined opening width at its tapered end. A neck section of the guide unit connects to the outlet opening. The passage width of the guide unit through the funnel insert is preferably reduced in its entire neck area to a reduced passage width, preferably also in the area of the outlet opening, so that the thickness and/or density of the material strand can also be determined here.

The guide unit preferably has, at least in the neck section, an inner wall that tapers conically in the direction of advance. The replaceable funnel insert has an outer peripheral surface. In its inserted state, the outer peripheral surface of the funnel insert preferably bears against the conically tapering inner wall of the guide unit, at least in sections.

Particular advantages result when the exchangeable funnel insert is completely accommodated in the neck section of the guide unit. In particular, an outer contour of the funnel insert and an inner contour of the neck section are adapted to one another in such a way that the funnel insert is accommodated in the neck section with a snug fit. In addition, the funnel insert used in the guide unit is held particularly securely and stably in the guide unit, which not least results in reliable and safe operation of the device.

The interchangeable funnel insert has an insertion opening at its tapered end, the insertion opening of the funnel insert in turn having an opening width which is reduced compared to the opening width of the outlet opening of the guide unit, which in particular also makes it possible to reliably adjust the thickness and/or density of the strand of material.

The replaceable funnel insert preferably comprises a funnel insert body which is opposite its tapered end and has an inner wall of the funnel which tapers conically in the direction of advance. The inner wall of the funnel is particularly smooth and has low static friction, as a result of which the web of material is advantageously guided through the funnel insert in a particularly jam-free manner. It goes without saying that the funnel insert body is also to be understood as a funnel insert body section which is an integral part or a section of the preferably one-piece funnel insert.

The replaceable funnel insert includes a funnel wall with a predetermined wall thickness, the wall thickness being directly related to the reduction in the passage width. At one end of the funnel insert facing the holding device, the funnel wall is preferably slanted and has a sloping surface here in order to make it easier for the material web to enter the interior of the funnel insert or to enable it to be essentially free of baffles and unhindered.

According to a preferred embodiment of the device, the cutting device of the device comprises at least one rotating cutting mechanism and particularly preferably at least one cutting roller rotating about a cutting roller axis. The cutting roller can preferably have one or more knife elements which are arranged on the circumference of a roller body of the cutting roller and fastened there. The at least one or more blade elements provide at least one cutting edge.

According to a very particularly preferred embodiment variant, the cutting edge runs helically around the essentially cylindrical roller body and around the axis of the cutting roller. In the present case, this should also be understood to mean that the cutting edge is coiled and runs helically on the circumference of the cutting roller.

For example, the cutting roller can comprise a multiplicity of elongate blade elements, the blade elements being arranged one behind the other along their length, such that the multiplicity of elongate blade elements are one or more, each essentially parallel form rows extending to the axis of the cutting roller or that the plurality of elongate knife elements essentially helically encircles the axis of the cutting roller.

Particularly preferably, at least one further holding device for the rotatable holding of at least one further roll of a material web is also provided in the present device. In addition, at least one further guide unit, tapering funnel-shaped in the feed direction, is provided for gathering and compressing the material web coming from the further roll to form a gathered strand of material, with the further guide unit being arranged between the further holding device and the transport roller unit.

Very particularly preferably, at least one second holding device is provided for the rotatable mounting of at least a second roll of a material web and at least one third holding device for the rotatable mounting of at least a third roll, as well as at least one second guide unit, tapering in the shape of a funnel in the feed direction, for gathering and compressing the from the second Material web coming from a roll to form a shirred strand of material and at least a third guide unit, tapering in a funnel shape in the feed direction, for gathering and compressing the material web coming from the third roll to form a shirred strand of material.

The device can be operated with a higher throughput and increased effectiveness via the multiple holding devices and guide units, as a result of which the capacity is significantly increased.

In the preferred embodiments with a plurality of guide units, in addition to the first guide unit, further guide units, that is to say several or even all of the further guide units provided, can each be equipped with an exchangeable funnel insert. In particular, it is possible for the respective passage widths of the guide units to be the same or different due to the respective funnel inserts inserted into the guide units and/or for the respective opening widths of the outlet openings of the guide units to be reduced to the same or different insert openings of the funnel inserts.

For example, the opening width of the outlet opening of the guide unit is in a range from 8 mm to 15 mm, preferably in a range from 10 mm to 13 mm and can particularly preferably be around 12 mm. The opening width of the insert opening of the funnel insert can be in a range from 4 mm to 13 mm, preferably in a range from 6 mm to 10 mm, particularly preferably in a range from 7 mm to 9 mm.

The device particularly preferably has a working plane which extends essentially in a horizontal orientation and runs parallel to the main axis of the device. In this case, the working plane runs in particular approximately parallel or parallel to a substrate used for setting up the device.

The holding devices preferably support the rolls of the web of material so as to be rotatable about a respective axis of rotation, each of the parallel axes of rotation running perpendicularly to the main axis and in particular perpendicularly to the working plane. In this way, for example, the holding devices can ensure that the roll is braked via its face support when the material web is pulled off by the transport roller unit, using gravity alone, in particular without other aids provided for this purpose, which also means, for example, a separate braking device for the roll can be saved.

Also preferably, each of the two rotating cooperating rollers of the transport roller unit rotates about a respective roller axis, the essentially parallel roller axes running perpendicular to the main axis and in particular parallel to the working plane. Alternatively or additionally, the cutting roller axis of the cutting roller runs perpendicular to the main axis and, in particular, parallel to the working plane.

The cooperating rollers of the transport roller unit are preferably designed as at least partially rubberized rollers and have at least one or more rubberized sections. In addition, the rollers have a good grip at least in sections and can therefore not only ensure the transport or feed and the unrolling of the material web, but also effectively transport and deform the material strands.

According to a preferred embodiment of the device, the holding devices and the transport roller unit are arranged at an axial distance from one another in the direction of the main axis, the axial distance being at least 900 mm, preferably at least 1000 mm and particularly preferably around 1200 mm.

For example, the present device can also have a foot switch for starting and, alternatively or additionally, an emergency stop switch ter dispose. Preferably, the device can also be designed for stepless adjustment of the speed and/or have a soft start.

The present invention also relates to a funnel insert for a device for producing packaging chips, which device has at least one funnel-shaped tapering guide unit for guiding through and simultaneously gathering and compressing a material web to form a gathered strand of material. The funnel insert is designed like a spout or funnel and can be used interchangeably in a tapered neck section of the guide unit of the device. The funnel insert has an outer peripheral surface in order to come into contact at least in sections with a conically tapering inner wall in the tapered neck section of the guide unit of the device.

character list

• 1 stark vereinfacht und grob schematisch dargestellt eine Ausführungsform der erfindungsgemäßen Vorrichtung in seitlicher Ansicht;
• 2 einen Ausschnitt einer Ausführungsform der Vorrichtung;
• 3 in einer vereinfachten Schnittdarstellung eine Ausführungsform eines Trichtereinsatzes;
• 4 in einer perspektivischen Ansicht eine bevorzugte Ausführungsform einer Schneideinrichtung und
• 5 stark vereinfacht und grob schematisch dargestellt eine alternative bevorzugte Ausführungsform der erfindungsgemäßen Vorrichtung in Draufsicht.

The invention will be explained in more detail below using exemplary embodiments in connection with the drawings. Show it

• 1 greatly simplified and roughly schematically illustrated an embodiment of the device according to the invention in a side view;
• 2 a section of an embodiment of the device;
• 3 in a simplified sectional view, an embodiment of a funnel insert;
• 4 in a perspective view a preferred embodiment of a cutting device and
• 5 greatly simplified and roughly schematically illustrated an alternative preferred embodiment of the device according to the invention in plan view.

Ways to carry out the invention

the 1 shows a roughly schematic representation of an embodiment of the device 1 according to the invention for the production of packaging chips 20. With the in FIG 1 correspondingly indicated Roman numerals indicate individual areas or sections of the device 1 on which various process steps are carried out in the production of packaging chips 20 by means of the device 1 .

The device 1, which extends along a main axis HA, comprises at least one first holding device 4 for the rotatable holding of a first roll 3 of a material web 2 provided as roll goods and wound up on the roll 3. The first roll 3 is of the first holding device 4 in such a way an axis of rotation DA of the roller 3 is rotatably supported such that the axis of rotation DA of the roller 3 runs essentially perpendicularly to the main axis HA of the device 1 .

The device 1 of the example 1 is set up on a base by means of a support frame or machine frame, which is not shown in the figure and is not described in detail, and has a work table 17 carried by the support frame or machine frame, which serves, among other things, as a support or installation surface for the first holding device 4. The surface of the work table 17 comes to lie in a working plane E of the device 1 which extends essentially in a horizontal orientation and which runs approximately parallel or parallel to the base on which the device 1 is set up, for example a hall floor.

How from the 1 becomes clear, the holding device 4 is arranged in such a way, in particular carried by the work table 17, in such a way that the roll 3 held by the holding device 4 is oriented essentially vertically, namely perpendicular to the surface of the work table 17, and the roll 3 is thus oriented in such a way from the holding device 4 is supported that the axis of rotation DA of the roller 3 is perpendicular to the working plane E.

The device 1 also has a transport roller unit 5, which in the present example has two rollers 5a, 5b which are designed in the form of at least partially rubberized rollers, in particular rubber rollers, and which interact in a rotating manner. About the driven rollers 5a, 5b, according to the in the 1 rotate about their respective roller axis WA, WA' as indicated by the arrows drawn, the material web 2 is unrolled or pulled off the roll 3.

The area or section in which the material web 2 is pulled off or unrolled from the roll 3 is in 1 indicated by the Roman numeral I and can also be understood here as the rolling area of the device 1 . However, it goes without saying that the “active pulling” of the material web 2 is mediated by the transport roller unit 5 . A feed direction R of the material web 2, which can also be referred to as the transport or running direction, runs in the direction of the main axis HA of the device 1. The material web 2 is thus moved in the feed direction R along its length.

Due to the vertical orientation of the roll 3, the web of material 2 is pulled off the roll 3 in such a way that the surfaces of the web of material, namely, the material web surfaces initially extend essentially perpendicularly to the working plane E. In the unwinding area of the device 1 denoted by the Roman numeral I, the lateral edges of the material web 2 are opposite one another in relation to the main axis HA of the device 1, with a first of the lateral edges of the material web 2 pointing downwards and facing the working plane E and the opposite edge faces up away from the work plane E.

A first guide unit 6 tapering in a funnel shape is arranged between the transport roller unit 5 and the first holding device 4 and thus between the transport roller unit 5 and the roller 3 . The material web 2 is pulled through the guide unit 6 by the rollers 5a, 5b of the transport roller unit 5, the material web 2 being gathered and compressed into a material strand 2' during the feed through the guide unit 6, in particular due to its funnel shape. This formation of the strand of material 2 'takes place in the in the 1 area designated by the Roman numeral II, which can also be understood as the gathering area or compression area of the device 1 .

The shirred, compressed strand of material 2' is formed in that the material web 2 is forced into a narrower, narrower shape with a reduced width due to the funnel-shaped tapering guide unit 6 and is therefore irregular when it is advanced or moved through the first guide unit 6 designed as a funnel is gathered or wrinkled or laid in irregular folds or pleated or compressed.

In the gathering or compression area II, a funnel insert 8 is additionally provided in the present device 1, which is arranged in the funnel-shaped tapering first guide unit 6 and, in the example of FIG 1 is fully accommodated in the guide unit 6. The funnel insert 8, below in connection with the 2 and 3 is described in more detail in greater detail, is interchangeably accommodated in the guide unit 6, in particular in a neck section 6.2 in the area of the tapered end 6a of the guide unit 6, or used there in an interchangeable manner.

When inserted, the funnel insert 8 forms a reducer through which a passage width w1 (in 1 not recognizable, see 2 ) of the guide unit 6, through which the material web 2 is passed for gathering and compressing, is reduced at least in sections.

With the help of the replaceable funnel insert 8 serving as a reducer, the device 1 can be adapted to the material web 2 to be processed in an application-related manner and/or as required, in particular to a thickness or material thickness of a desired material web 2 to be processed.

It goes without saying that due to the interchangeability of the replaceable funnel insert 8 serving as a reducer via a corresponding selection of differently configured funnel inserts 8, which can, for example, be designed in different geometries and thereby reduce the passage width w1 of the guide unit 6 to a varying extent to a reduced passage width w2 , The device 1 can be optimally adapted to the processing of material webs 2 of different material thicknesses.

The material web 2 to be processed by means of the device 1 can in particular be a paper web, so that the processing of paper webs with very different paper thicknesses is made possible by exchanging the exchangeable funnel insert 8 . For example, the device 1 can be set or adapted to the processing of paper webs with paper thicknesses in a range from 25 g/m ² to 120 g/m ² by using different exchangeable funnel inserts 8 .

The gathered, compressed strand of material 2' runs out of the guide unit 6 at an outlet opening 6.1 facing the rollers 5a, 5b at the tapered end 6a thereof. The outlet opening 6.1 of the guide unit 6 is arranged in the feed direction R in front of the rollers 5a, 5b and adjacent to them. The gathered, compressed strand of material 2' is pressed together by the two interacting rollers 5a, 5b and thereby permanently deformed, whereby a deformed strand of material 2", in the broadest sense a compressed, deformed strand of material 2", is formed. The area of the device 1 in which the compression and deformation of the strand of material 2 'and thus the formation of the deformed strand of material 2 "takes place in the 1 denoted by III and thus also represents the deformation area of the device 1.

The transport roller unit 5, in particular the rollers 5a, 5b rotating about their respective roller axes WA, WA', thus not only pulls and unrolls the material web 2 from the roll 3, but also transports or feeds the material web 2 and compresses and Deforming the strand of material 2'. The rotating rollers 5a, 5b are of their axial length oriented transversely to the feed direction R of the material web 2, in particular in such a way that the roller axes WA, WA' of the rotating rollers 5a, 5b running parallel to one another run perpendicular to the main axis HA of the device 1 and parallel to the working plane E and at the same time perpendicular to the axis of rotation of the Roller 3 are aligned.

Access of the rollers 5a, 5b to the shirred strand of material 2' for deforming it, namely an access direction in which the rollers 5a, 5b engage the shirred strand of material 2' for deforming, thus runs from below and above and thus in the axial direction the axis of rotation DA of the roll 3. The rollers 5a, 5b thus engage the gathered material strand 2' from those sides on which the lateral edges of the material web 2 are aligned when the material web 2 is unrolled in the unwinding region I.

In the present device 1, the holding device 4 and the transport roller unit 5 are arranged at an axial distance d from one another in the direction of the main axis HA, the axial distance d being at least 900 mm, preferably at least 1000 mm and particularly preferably around 1200 mm.

The device 1 also has a cutting device 7 arranged behind or after the transport roller unit 5 in the feed direction R, which in the example of FIG 1 includes a rotating cutter 7a. The deformed strand of material 2" is cut or cut to length by means of the cutting device 7, as a result of which the packaging chips 20 are finally released in their predetermined particle length. The area of the device 1 comprising the cutting device 7 is in 1 denoted by the Roman numeral IV and can also be understood as the cutting area of the device 1.

An exemplary embodiment of the rotary cutter 7a is made with reference to FIG 4 described in more detail below.

The following is related to the 2 and 3 the replaceable funnel insert 8 and its interaction with the guide unit 6 are described in more detail. the 2 shows a detail of the unwinding and gathering area I, II of an advantageous embodiment of the present device 1, whereby for reasons of clarity neither the material web 2 nor the gathered material strand 2' in 2 are shown.

How regarding 1 already explained above, is also in the example 2 the replaceable funnel insert 8 is completely accommodated in the neck section 6.2 of the guide unit 6.

The guide unit 6 itself is designed in particular as a funnel and, in the example shown, has an outer contour or a peripheral shape essentially in the form of a truncated cone. At its tapered end 6a, the guide unit 6 is equipped with an outlet opening 6.1 with a predetermined opening width dF, with the neck section 6.2 of the guide unit 6 adjoining the outlet opening 6.1 in the direction of the holding device 4.

Opposite the tapered end 6a there is an inlet end 6b which faces the holding device 4 and at which an inlet opening for the material web 2 drawn off the roll 3 is formed. The guide unit 6 designed as a funnel for guiding through and gathering the material web 2 thus forms a hollow body which has an inner wall which tapers conically in the feed direction R.

The replaceable funnel insert 8, which is not visible from the outside when it is fully inserted into the guide unit 6, is only shown in FIG 2 made visible and also shown for the sake of better illustration in a section perpendicular to the working plane E along the main axis HA.

The replaceable funnel insert 8 of the example 2 is also designed as a funnel itself and has an outer contour shape or a peripheral shape essentially in the form of a truncated cone. At its tapered end 8a, the funnel insert 8 is equipped with an insert opening 8.1 with a predetermined opening width dT, the opening width dT of the insert opening 8.1 of the funnel insert 8 being reduced compared to the opening width dF of the outlet opening 6.1 of the guide unit 6.

Adjoining the insert opening 8.1 along the main axis HA, the funnel insert 8 has a funnel insert neck 8.2, which in turn is adjoined along the main axis HA by a funnel insert body 8.3, which provides an insertion opening at an end 8b opposite the tapered end 8a and facing the holding device 4.

In the example of 2 the funnel insert 8 and the neck section 6.2 of the guide unit 6 are matched to one another in terms of their geometric shape and size such that the funnel insert 8 is received with a snug fit in the neck section 6.2. In particular, an outer contour of the Funnel insert 8 and an inner contour of the neck section 6.2 adapted to one another in such a way that the funnel insert 8 can be inserted or used to fit into the neck section 6.2.

A funnel wall 15 of the replaceable funnel insert 8 provides an inner funnel wall 8.4 that tapers conically in the feed direction R and is designed with a wall thickness such that at least in the neck section 6.2 of the guide unit 6, in which the funnel insert 8 is accommodated, the passage width w1 of the guide unit 6 is reduced to a smaller passage width w2 of the funnel insert 8.

Referring now to the 3 a further alternative, likewise preferred embodiment of a funnel insert 8 shown in isolation is shown here in a sectional view. The funnel insert 8 of 3 has a compared to the in 2 described embodiment variant on different external shape. In contrast to the variant according to 2 are in the exemplary funnel insert 8 of 3 Both the funnel insert body 8.3 and the funnel insert neck 8.2 are each designed essentially in the form of a hollow truncated cone, but with respective lateral surfaces that are aligned in relation to a cone axis KA (which in the state of use, namely inserted into the guide unit 6, is aligned with the main axis HA of the device 1 coincides), have different inclinations, namely such that a surface line of the funnel insert body 8.3 encloses a first angle with the cone axis KA and a surface line of the funnel insert neck 8.2 encloses a second, smaller angle with the cone axis KA. Although not explicitly shown in the figures, the funnel insert neck 8.2 can alternatively be designed as a straight cylinder.

Also in the example of 3 the funnel insert 8 thus in any case has an outer peripheral surface which rests against the conically tapering inner wall of the guide unit 6 at least in sections.

The funnel wall 15 of the funnel insert 8 according to 3 is beveled at the end 8b facing the holding device 4 and has an inclined surface 16 which extends a little way, i.e. over a predetermined section, starting from the insertion opening arranged at the wide end 8b, obliquely inwards and in the direction of the tapered end 8a is inclined inwards towards the cone axis KA.

This inclined surface 16 makes it easier, for example, for the strand of material 2 that is being gathered and compressed to enter the interior of the funnel insert 8, whereby the advance speed and thus the operating speed of the device 1 can be increased and material jamming can be prevented. The funnel inner wall 8.4 is preferably designed to be particularly smooth and has low static friction. The funnel insert 8 is preferably made of a material that allows the material web 2 to slide easily along, for example the funnel insert 8 is made of a plastic.

A particularly preferred embodiment of the device 1, which in particular allows an increased throughput and is designed for larger or increased capacities, is shown in FIG 5 shown in a plan view from above, that is to say in a plan view of the working plane E.

The example of 5 comprises three holding devices 4, 11, 12 for rotatably or rotatingly holding three rolls 3, 3', 3" of a material web 2, namely the first holding device 4 for rotatably holding the first roll 3 and also a second and third holding device 11, 12 for rotatably supporting a second and third roll 3', 3". All three holding devices 4, 11, 12 are in a vertical orientation on the in 5 set up only indicated by dashed work table 17 or carried by this, as above in relation to the example of 1 has already been described for the first holding device 4 .

The device 1 of 5 also includes three guide units 6, 13, 14, namely the first guide unit 6, and also a second and third guide unit 13, 14, each of the three guide units 6, 13, 14 being assigned to one of the three holding devices 4, 11, 12, in such a way that each of the three guide units 6, 13, 14 is fed a respective material web 2 from one of the three rolls 3, 3', 3''.

In the preferred embodiment of the device 1 shown as an example, an exchangeable funnel insert 8 is provided for each of the three guide units 6 , 13 , 14 and is accommodated in the guide units 6 , 13 , 14 . It goes without saying that embodiments with three guide units 6, 13, 14 are also conceivable in which the second and/or third guide unit 13, 14 does not use a funnel insert 8. Of course, identical or different funnel inserts 8 can be accommodated in the three guide units 6, 13, 14, whereby the different funnel inserts 8 can differ in terms of their geometry in such a way that the passage width w1 of the individual guide units 6, 13, 14 is reduced to different passage widths w2 be reduced and the individual guide units 6, 13, 14 are set for different material thicknesses.

The guide units 6, 13, 14 downstream in the feed direction R, the transport roller unit 5 is provided, in the view of FIG 5 only the upper roller 5a of the two cooperating rollers 5a, 5b can be clearly seen. The rollers 5a, 5b of the transport roller unit 5 extend over an entire device width VB of the device 1, running essentially perpendicularly to the main axis HA.

At least one of the two rollers 5a, 5b - in the example 5 both rollers 5a, 5b - is/are designed as rubber rollers, at least partially rubberized, and each have a rubberized section 18 in the form of a sleeve-like or sheath-like rubber sheathing, at least at the height of the outlet openings 6.1 of the respective guide units 6, 13, 14. In the area of the rubberized sections 18, the material strands 2′ gathered and pressed together by means of the three guide units 6, 13, 14 are each permanently deformed to form the deformed, gathered and pressed material strand 2″.

In the feed direction R, after the transport roller unit 5, the cutting device 7 follows, which in the example of FIG 5 a cutting roller 9 rotating about a cutting roller axis SWA. Like the rollers 5a, 6a of the transport roller unit 5, the cutting device 7, in particular the cutting roller 9, also extends over the entire device width VB of the device 1. In the exemplary device 1, all three can thus be pushed together via the respective guide units 6, 13, 14 , Gathered strands of material 2' are deformed by means of one transport roller unit 5 to form the three deformed strands of material 2'' and finally cut by means of one cutting roller 9 of one cutting device 7.

With reference to the 4 the cutting device 7 with the cutting roller 9 rotating about the cutting roller axis SWA is now described in more detail.

The cutting roller 9 has an essentially cylindrical roller body 9a, which in the present case can also be understood as a hub roller or hub body, and on whose peripheral surface formed by the lateral surface of the cylinder several blade elements 10 are arranged and fastened there.

The blade elements 10 distributed over the circumference of the roller body 9a together form a cutting edge 10.1 or a cutting edge. The elongated knife elements 10, each of which provides a cutting edge section or a cutting edge section provided on a respective longitudinal side of the knife elements 10, are attached to the roller body 9a in such a way that the cutting edge sections or cutting edge sections point outwards and the knife elements 10 at the same time Are arranged length after the other and connect with their end faces together.

The arrangement of the blade elements 10 on the circumference of the roller body 9a is selected in such a way that the blade 10.1 or cutting edge, which is formed by all blade elements 10, in particular their composite blade sections or cutting edge sections, helically around the circumferential surface of the roller body 9a and thus helically around the cutting roller axis SWA runs around.

The cutting device 7 also includes a fixed cutting element 19, which forms a counter blade to the cutting edge 10.1 of the rotating cutting roller 9. The stationary cutting element 19 can also be understood as a counter-knife and can be designed in several parts and, for example, be composed of several elongate cutting element parts which adjoin one another in a coaxially aligned manner in terms of their length. When the cutting roller 9 rotates about the cutting roller axis SWA, a deformed strand of material 2″ can be cut where the helical blade 10.1 just passes the counter blade of the stationary cutting element 19.

With a like in 5 The preferred embodiment variant shown here has the advantageous result that when the cutting roller 9 rotates about the cutting roller axis SWA, the three deformed material strands 2" are not cut simultaneously due to the helical course of the cutting edge 10.1, but are cut at different times, as a result of which the cutting device 7 runs more smoothly.

Reference List

1

Device for the production of packaging chips

2

web of material

2'

strand of material

2"

permanently deformed strand of material

3

first role

3', 3"

second and third role

4

first holding device

5

transport roller unit

5a, 5b

rolls

6

first leadership unit

6a

tapered end of guide unit

6b

Incoming end of the guide unit

6.1

Outlet opening of the guide unit

6.2

Neck section of the guide unit

7

cutting device

7a

rotating cutter

8th

funnel insert

8a

tapered end of funnel insert

8b

wide end of the funnel insert

8.1

insert opening

8.2

funnel insert neck

8.3

funnel insert body

8.4

hopper inner wall

9

cutting roller

9a

roller body

10

knife element

10.1

cutting edge

11

holding device

12

holding device

13

Guide unit

14

Guide unit

15

funnel wall

16

bevel

17

work table

18

rubberized section

19

cutting element

20

packaging chips

i.e

axial distance

dF

opening width

dT

opening width

THERE

axis of rotation

E

working level

HA

main axis

KA

cone axis

R

feed direction

SWA

cutting roller axis

vb

fixture width

w1

passage width

w2

reduced clearance

WA, WA'

roller axles

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 3718541 A1 [0003]
• DE 102008030916 A1 [0004]
• DE 202017006738 U1 [0004]

Claims (22)

Device (1) for producing packaging chips (20), having at least one first holding device (4) for rotatably holding a first roll (3) of a material web (2), at least one transport roller unit (5) for pulling the material web (2) off the at least one first roller (3) and for transporting the material web (2) in a feed direction (R) extending along a main axis (HA) of the device (1), at least one in the direction of the main axis (HA) between the first holding device (4 ) and the transport roller unit (5), tapering in a funnel shape in the feed direction (R) and at least one cutting device (7) arranged in the feed direction (R) behind the transport roller unit (5), the guide unit (6) for guiding through and simultaneous gathering and pressing together of the material web (2) to form a gathered strand of material (2'), the transport roller unit (5) being at least comprises two rotating, cooperating rollers (5a, 5b) which are set up for permanently deforming the shirred strand of material (2') and wherein the cutting device (7) is designed for cutting the shirred and deformed strand of material (2"), characterized in that the The device (1) also has an exchangeable funnel insert (8) designed in the manner of a spout or funnel, which is at least partially accommodated in a tapered neck section (6.2) of the first guide unit (6). Device (1) after claim 1 , characterized in that the replaceable funnel insert (8) forms a reducer, with the funnel insert (8) used in the guide unit (6) reducing a passage width (w1) of the guide unit (6) at least in sections to a reduced passage width (w2) . Device (1) after claim 1 or 2 , characterized in that the guide unit (6) is designed in particular as a funnel and has an outlet opening (6.1) with a predetermined opening width (dF) at its tapered end (6a), the neck section (6.2) of the guide unit (6) adjoining the outlet opening (6.1) connects. Device (1) after claim 1 until 3 , characterized in that the guide unit (6) has, at least in the neck section (6.2), an inner wall that tapers conically in the feed direction (R) and that the replaceable funnel insert (8) has an outer peripheral surface that bears against the conically tapering inner wall at least in sections . Device (1) according to one of the preceding claims, characterized in that the exchangeable funnel insert (8) is completely accommodated in the neck section (6.2) of the guide unit (6), in particular an outer contour of the funnel insert (8) and an inner contour of the neck section ( 6.2) are adapted to one another in such a way that the funnel insert (8) is accommodated in the neck section (6.2) with a snug fit. Device (1) according to one of the preceding claims, characterized in that the replaceable funnel insert (8) has an insertion opening (8.1) at its tapered end (8a), the insertion opening (8.1) of the funnel insert (8) having an opening width (dT) which is reduced compared to the opening width (dF) of the outlet opening (6.1) of the guide unit (6). Device (1) according to one of the preceding claims, characterized in that the replaceable funnel insert (8) comprises a funnel insert body (8.3) opposite its tapered end (8a) which has a funnel inner wall (8.4) tapering conically in the feed direction (R). Device (1) according to one of the preceding claims, characterized in that a funnel wall (15) of the funnel insert (8) is beveled at an end (8b) facing the holding device (4). Device (1) according to one of the preceding claims, characterized in that the cutting device (7) comprises at least one rotating cutting mechanism (7a). Device (1) according to one of the preceding claims, characterized in that the cutting device (7) comprises at least one cutting roller (9) rotating about a cutting roller axis (SWA), the cutting roller (9) having one or more knife elements (10) which are arranged on the circumference of the cutting roller (9) and provide at least one cutting edge (10.1). Device (1) after claim 10 , characterized in that the cutting edge (10.1) runs helically around the cutting roller axis (SWA). Device (1) after claim 10 or 11 , characterized in that the cutting roller (9) comprises a plurality of elongate knife elements (10), the knife elements (10) being arranged one behind the other along their length, such that the plurality of elongate knife elements (10) have one or more, respectively in the Form substantially parallel to the cutting roller axis (SWA) running rows or that the plurality of elongated knife elements (10) the cutting roller axis (SWA) substantially helically encircles. Device (1) according to one of the preceding claims, characterized in that at least one further holding device (11, 12) for the rotatable holding of at least one further roll (3', 3") of a material web (2) is provided and that further at least one further guide unit (13, 14) tapering in a funnel shape in the feed direction (R) for gathering and compressing the material web (2) coming from the further roll (3') to form a gathered material strand (2'), the further guide unit ( 13, 14) between the further holding device (11, 12) and the transport roller unit (5). Device (1) after Claim 13 , characterized in that at least one second holding device (11) for rotatably holding at least one second roll (3') of a material web (2) and at least one third holding device (12) for rotatably holding at least one third roll (3") of a material web ( 2) is provided and that furthermore at least one second guide unit (13) tapering in a funnel shape in the feed direction (R) for gathering and compressing the material web (2) coming from the second roll (3') into a gathered material strand (2') and at least one third guide unit (14) tapering in a funnel shape in the feed direction (R) is provided for gathering and forcing together the material web (2) coming from the third roll (3") to form a gathered material strand (2'). Device (1) after Claim 13 or 14 , characterized in that several or all of the provided guide units (4, 11, 12) are each equipped with an exchangeable funnel insert (8). Device (1) after claim 15 , characterized in that the respective passage widths (w1, w2) of the guide units (4, 11, 12) are the same or different from one another due to the respective funnel inserts (8) inserted into the guide units (4, 11, 12). Device (1) according to one of the preceding claims, characterized in that the device (1) has a working plane (E) which extends essentially in a horizontal orientation and runs parallel to the main axis (HA) of the device (1) and which in particular is approximately parallel or runs parallel to a substrate used for setting up the device. Device (1) according to one of the preceding claims, characterized in that the holding devices (4, 12, 13) rotate the rollers (3, 3', 3") of the material web (2) about a respective axis of rotation (DA, DA', DA ") rotatable holders, each of the parallel axes of rotation (DA, DA', DA") being perpendicular to the main axis (HA) and in particular perpendicular to the working plane (E). Device (1) according to one of the preceding claims, characterized in that each of the two rotating cooperating rollers (5a, 5b) of the transport roller unit (5) rotates about a respective roller axis (WA, WA'), the essentially parallel roller axes (WA , WA ') perpendicular to the main axis (HA) and in particular parallel to the working plane (E) and / or that the cutting roller axis (SWA) perpendicular to the main axis (HA) and in particular parallel to the working plane (E). Device (1) according to one of the preceding claims, characterized in that the cooperating rollers (5a, 5b) of the transport roller unit (5) are designed as at least partially rubberized rollers and have at least one or more rubberized sections (18). Device (1) according to one of the preceding claims, characterized in that the holding devices (4, 11, 12) and the transport roller unit (5) are arranged at an axial distance (d) from one another in the direction of the main axis (HA), the axial Distance (d) is at least 900 mm, preferably at least 1000 mm and particularly preferably around 1200 mm. Funnel insert (8) for a device (1) for producing packaging chips (20), which device (1) has at least one guide unit (6) tapering in the shape of a funnel for guiding through and simultaneously gathering and compressing a material web (2) to form a gathered strand of material (2 '), characterized in that the funnel insert (8) is designed like a spout or funnel and can be inserted interchangeably into a tapered neck section (6.2) of the guide unit (6) of the device (1), the funnel insert (8) having an outer peripheral surface in order to at least partially come into contact with a conically tapering inner wall in the tapered neck section (6.2) of the guide unit (6) of the device (1).

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