EP3621792A1

EP3621792A1 - Device for producing a cushioning product

Info

Publication number: EP3621792A1
Application number: EP18723487.7A
Authority: EP
Inventors: Bastian Schalk
Original assignee: Sprick Bielefelder Papier und Wellpappenwerke and Co GmbH
Current assignee: Sprick Bielefelder Papier und Wellpappenwerke and Co GmbH
Priority date: 2017-05-08
Filing date: 2018-05-08
Publication date: 2020-03-18
Anticipated expiration: 2038-05-08
Also published as: US11904570B2; DE102017109851A1; EP3621792B1; US20200070460A1; WO2018206567A1; PL3621792T3

Abstract

The invention relates to a device for producing a cushioning product from a single- or multi-layer continuous paper web (5), comprising a funnel-type preforming station (11) for compressing, preferably folding or rolling, the paper web (5) in the transverse direction (Q), and a deformation station (13) connected to the preforming station (11) in the conveying direction (F) of the paper web (5) and having two embossing rollers (31, 33) which engage with one another in a deformation region (35) in order to shape the paper web (5) to form a cushioning product (3) with at least one crumple pocket (7, 9) extending in the longitudinal direction (L), wherein the preforming station (13) has a lifting device (4), arranged in front of the embossing rollers (31, 33) in the conveying direction (F), for lifting a central region of the paper web (5).

Description

Device for manufacturing a cushioning product

The invention generally relates to a device for manufacturing a cushioning product, for example an endless upholstery tube or a cushion pad, from a single-layer or multi-layer continuous paper web. In generic Füllmaterialfertigungsvorrichtungen be set up, for example, in logistics centers as portable, mobile unit to provide the packaging of an article made-to-length or endless padding material. The cushioning material or cushioning product is obtained from a space saving in comparison to the padding paper web supply, such as a paper web roll, or a paper web Leporellostapel. The paper web preferably consists of recycled paper. To produce the cushioning material, the paper web is withdrawn from a stack or roll and reshaped to form air pockets that provide cushioning between shipping goods to be packaged and a shipping container.

In order to be able to rapidly package a large selection of items to be packaged, the items are stowed on the basis of standardized packaging processes and in packagings of standardized sizes. It is important to provide the requisite padding material in consistent quality and predefined three-dimensional dimensions to enable an efficient workflow.

Generic devices for producing a cushioning product from a single or multi-ply continuous paper web are known, for example, from DE 10 2013 015 875 Ai and DE 10 2014 016 874 Ai. There is a desire to provide large amounts of cushioning material in the fastest possible time and without the occurrence of paper jam, with a high cushioning quality, ie a good damping capacity of the cushioning material should be provided. It is an object of the invention to overcome the disadvantages of the prior art and in particular to provide an apparatus for manufacturing a cushioning product from a single or multi-ply continuous paper web with a view to achieving the highest possible cushioning quality at high processing speeds. This object is achieved by the subject matter of claim l.

Accordingly, an apparatus according to the invention for manufacturing a cushioning product from a single or multi-ply continuous paper web is provided. The paper web may be provided as a supply, for example, as a wound roll or Leporellostapel. Preferably, the paper web has a width of at least 30 cm and / or at most 200 cm, preferably between 50 cm and 100 cm, in particular a width of about 70 cm. The longitudinal extent of the paper web is preferably essential, i. at least ten, 50 or 100 times larger than the width of the paper web. The thickness of the paper web corresponds to the thickness of the single or multilayer paper web material and is preferably less than 1 mm. The use of recycled paper is preferable due to the special environmental friendliness.

The dunnage product manufacturing apparatus according to the invention comprises a funnel-like preform station for compressing the paper web in the transverse direction. Preferably, the preforming station is designed for wrapping or curling the paper web in the transverse direction. In particular, the preforming station can have funnel inner walls on the side, which form a funnel-like tapering preforming contour in the conveying direction of the paper web.

The inventive upholstered product manufacturing apparatus has a deformation station which is preferably immediately adjacent to the preforming station in the conveying direction of the paper web. The deformation station comprises two embossing rollers which intermesh in a deformation area to transform the paper web into a padding product, such as a tubular paper pad, having at least one longitudinally extending crush cavity. The transverse direction of the paper web is preferably defined transversely to the conveying direction of the paper web and may correspond to the transverse direction of extension or width of the supply, in particular of the fanfold stack or of the roll. The transverse direction at the entrance of the preforming station is preferably defined, for example, by a guide device arranged there, such as a deflection roller. In the cushioning product manufacturing apparatus of the present invention, the preform station a preferably in the conveying direction immediately before the embossing rollers arranged lifting device for lifting a central region of the paper web. The lifting device may be arranged in a rear region of the preforming station in the conveying direction. Preferably, the lifting device is arranged near the exit of the preforming station or near the entrance of the deformation station. The lifting device preferably lifts a paper web that has already been preformed by parts of the preforming station, for example in the transverse direction of each other, opposite the funnel inner walls. A lifting device may for example be realized pneumatically by means of compressed air or mechanically, for example by a particular freely rotating roller, a ramp or the like. The lifting device is preferably configured to lift the paper web perpendicular to the conveying direction of the paper web and perpendicular to the transverse direction of the paper web. It is clear that the longitudinal direction of the paper web corresponds to the conveying direction for continuous conveying. The central region of the paper web to be lifted is preferably arranged centrally in the transverse direction of the in particular preformed paper web. In particular, the central region of the paper web is arranged centrally in the transverse direction of the production device, preferably the deformation device and / or the preforming station.

By providing a lifting device upstream against the conveying direction in front of the deformation station of a device for manufacturing a cushioning product, it can be achieved that the transverse width section of the paper web which is introduced into a deformation station for a deformation process is increased in comparison with a conventional production device, so that the central region of the paper web to be deformed provides more paper material for the deformation process. As a result, a more dimensionally stable, soft cushioning product can be provided. Surprisingly, it has been found that, for example, when using a roll-shaped paper web supply an increase in the tensile stress acts in the middle paper web area, which counteracts sagging of a paper web in its central region, so that a tear tendency of the paper web is reduced as a result of sagging.

According to a preferred embodiment of a device according to the invention for manufacturing a cushioning product, the preforming station has a guide surface which is lower in the vertical direction, from which the lifting device produces an elevation of the paper web which increases in particular harmonically and / or continuously upwards effected by at least 100 mm, at least 25 mm and / or at most 100 mm, at most 45 mm, preferably about 25 mm.

According to a preferred embodiment of the invention, the lifting device is designed to raise the central region of the paper web to a vertical height of the deformation region of the deformation station. In particular, the embossing rollers have pitch circle diameters, wherein the contact point of the pitch circle diameter, in particular a tangent-like or secant contact point, defines a deformation plane which is oriented, for example, according to the roller circle tangent or edge. In particular, the lifting device can lift the central region of the paper web up to the level of this deformation plane ± 20 mm or iiomm. The lifting device can lift the central region of the paper web up to at least this level of deformation. Preferably, the width of the lifting device is equal to or equal to the effective width of the embossing rollers (in the axial direction thereof). In relation to the usual supply of a paper web with a nearly flat central region in the vertical direction, such a lifting by means of a lifting device conveys a convexly upwardly bent central region to the embossing rollers of the deformation station. In this case, it is preferred that the elevation takes place up to above the deformation area in which the deformation of the paper web takes place through the embossing rollers, so that the largest possible central paper web area is provided for the deformation by the embossing rollers.

According to a preferred embodiment of a device according to the invention for manufacturing a cushioning product, the lifting direction comprises a wedge. In particular, the lifting device may consist of a wedge. The wedge is formed in conveyor at least partially rising. Preferably, the wedge has a cross-sectional area in the transverse direction and vertical direction which tapers vertically upward from a lower base of the wedge, which may preferably be formed on the lower guide surface of the preform station. The wedge may have a saddle area of constant height, in particular in its rear, in particular, the highest section in the conveying direction. The wedge may for example be formed of a plastic material such as POM or PIA, or of a metal material such as steel or aluminum. Preferably, the edges of the wedge are rounded so that the paper web can slide along the wedge without increased risk of tearing. According to a further development of a cushioning product manufacturing device according to the invention, the wedge in the conveying direction has a base with a transverse width which measures at least in sections at least 10 mm, at least 25 mm and / or at most 100 mm, at most 45 mm, preferably about 35 mm. Preferably, the width of the base of the wedge is smaller than the width of the embossing rolls. In particular, the base of the wedge has a transverse width which increases at least in sections in the conveying direction. Alternatively or additionally, the base of the wedge in the conveying direction, at least in sections, have a constant transverse width. Preferably, at least one forward section of the wedge in the conveying direction is designed with increasing transverse width. Preferably, at least one downstream in the conveying direction section of the wedge is designed with a constant transverse width. The width, height and / or shape of the wedge changes in the conveying direction preferably exclusively continuously or jump-free.

According to a preferred embodiment of the device for manufacturing a cushioning product, the preforming station in particular comprises two guide rods for conveying the wrapping and / or curling of the paper web in the preforming station. The guide rods are preferably arranged in particular between lateral funnel inner walls of the preforming station with transverse spacing decreasing in the conveying direction. Preferably, one guide rod each to a funnel inner wall parallel or substantially parallel. Preferably, in each case a guide rod and an adjacent funnel inner wall are oriented parallel to each other, so right in the conveying direction funnel inner wall parallel to the right in the conveying direction guide rod and left in the conveying direction funnel inner wall parallel to the left in the conveying direction guide rod. Through the use of funnel inner walls in combination with guide bars, a whipping and / or curling effect of the preform station is optimized since the longitudinal edge edges of the web encounter the funnel inner walls in the longitudinal direction or conveying direction through the preform station and upwardly from the funnel inner walls and be moved towards each other. By means of the parallel to the funnel inner walls arranged guide rods a kind of abutment for the wrapping process of the paper web side edges is provided which realize a controlled wrapping and thus a consistent cushion quality. It has proved to be advantageous to let a guide rod in the conveying direction in front of the other guide rod end. For example, the left guide rod may be shorter than the right guide rod, or vice versa. Preferably, at least one Guide rod, in particular both guide rods, a conical end, which widens, starting from a first constant guide rod cross-section (diameter) to a larger end rod diameter. Let Mar be that the rear ends of the guide rods are arranged at a distance from each other and from the deformation station in the conveying direction. The lifting device, in particular the wedge, can be arranged in the transverse spacing between the longitudinal ends of the guide rods.

The guide rods are preferably arranged at a preferably constant vertical distance from a lower guide surface of the preform station. In particular, a hold-down device, such as a hold-down plate, for holding down the central region of the paper web can be arranged on the guide rods, which extends at least in sections transversely between the guide rods in the conveying direction. For example, a forward feed section, such as a front quarter, front third or a front half of the guide bars, may be realized with a hold-down plate extending between the guide bars. The particular average height of the guide rods relative to the guide surface may preferably be between 25 mm and 45 mm. A guide rod diameter may initially be between 10 mm and 30 mm. On the output side or end in a conical section, the guide rod diameter may preferably be between 20 mm and 60 mm, for example about 45 mm.

According to a preferred embodiment of the invention, the lifting device is adapted to lift the central region of the paper web above a lower edge of the guide rods and / or optionally the hold-down device. In particular, the lifting device is designed to lift the central region of the paper web at most to below the upper edge of the guide rods.

According to a preferred embodiment of a device according to the invention, a distance from a rotation axis of one of the embossing rollers to the lifting device in the conveying direction is at least as large as an embossing roller radius. Preferably, the distance from the axis of rotation of the embossing rollers to the lifting device, in particular a rear end of the lifting device in the conveying direction, for example a rear end in the conveying direction is at least 20 mm in size and at most 200 mm in size, preferably between 30 mm and 170 mm. In particular, the Distance from the axis of rotation of the embossing rollers to the lifting device in the conveying direction smaller, preferably up to 6oo mm smaller, equal to or greater than, preferably up to 60 mm greater than, a distance from the axis of rotation of one of the embossing rollers to the rear end of a guide rod in the conveying direction , preferably the longer guide rod. The embossing rollers preferably have the same outer radius. For example, the radius of an embossing roller can be between 3 cm and 8 cm, preferably between 4 cm and 6 cm.

According to a preferred embodiment of the device according to the invention, the deformation station has an inner channel for guiding the preformed paper web, which has channel walls with recesses, through which a respective embossing roller protrudes. The channel walls serve as apertures, which allow a promotion of the paper web only in a range which is necessary for deforming the paper web with the embossing rollers. Through the inner channel, the paper web is preferably guided so that a paper jam is avoided. In particular, the lower guide surface of the deformation station passes loiickfrei and / or with a transition edge in the inner channel. A transitional edge may preferably be rounded. The transition from the lower guide surface of the preforming station in the inner channel of the deformation station is preferably carried out in the vertical direction and / or conveying direction harmonious. The height of the inner channel at the entrance of the deformation station is preferably between 50 mm and 150 mm, preferably between 70 mm and 105 mm. Preferably, a lower channel wall adjoins the lower guide wall or guide surface of the preform station in alignment. The upper channel wall may taper in the conveying direction to a lower channel wall.

A preferred embodiment of a device according to the invention for producing a cushioning product further comprises a guiding device upstream of the preforming station in the paper conveying direction, such as a sliding edge or a deflection roller, preferably a deflection pair or a pairing of a deflection roller with a sliding edge, for aligning the paper web for the preforming station. Preferably, the guide means allows a flat, in the transverse direction of the paper web undeformed pulling the paper web into the cushioning product manufacturing apparatus.

Further preferred embodiments are described in the subclaims. Further advantages, features and characteristics of the invention will become apparent from the following description of preferred embodiments of the invention with reference to the accompanying In the drawings: FIG. 1 is a cross-sectional side view of a cushioning product manufacturing apparatus according to the invention; a side view of the invention cushioning product manufacturing apparatus of Figure 1; a perspective sectional view of the manufacturing apparatus according to the invention according to Figure 2; a view of the cushioning product manufacturing apparatus according to the invention according to Figure 1 from behind; a perspective view of a cushioning product manufacturing device according to the invention according to Figure 1 from obliquely behind; a side view of a wedge; a front view of the wedge of Figure 6a; a plan view of the wedge of Figure 6a; and a perspective view of the wedge according to the figures 6a to 6c for a cushion product manufacturing device according to the invention.

The device according to the invention for manufacturing a cushioning product is generally provided with the reference number 1 in the following figures. As main components, the upholstery product manufacturing device 1 comprises a preforming station and a deformation station 13 and a lifting device 4 arranged in the conveying direction F in front of the deformation station 13. The lifting device 4 can be, for example, pneumatically, by an air jet, mechanically, for example by a ramp, a preferably freely rotating wheel or, as exemplified, a wedge 41, be realized.

The upholstery product manufacturing apparatus 1 illustrated in the figures further comprises a rotary cutter 15 for separating individual upholstery cushions (not shown in detail) from the tubular upholstery product 3, which has two crumple cavities 7, 9 extending in the longitudinal direction L. Instead of a rotary cutter 15 may also be another mechanism, such as a toothed blade at the output the upholstery product manufacturing device l for tearing off a long padding strand, be arranged (not shown in detail).

The paper web 5 is conveyed along a conveying direction F through the device 1, in that the conveying and embossing rollers 31, 33 feed the paper web 5 from a paper web supply, not shown in detail, preferably a Leporello stack or a roll. The embossing rollers 31 and 33 can thus serve in functional union for conveying the paper web 5 in the conveying direction F as well as for converting the paper web 5 into a cushioning product 3. At least one of the conveyor rollers 31, 33 is driven by an electric motor, not shown, which can also drive the rotary cutter 15. The rotary cutter 15 may have its own electric motor.

During the production of upholstery products 3, a paper web 5 travels through the device 1, in that the paper web 5 is first fed into the upholstery product production device 1 at the guide device 17, which is realized by two deflection rollers 18, 19 extending in the transverse direction Q. In the conveying direction F behind the guide station 17, the paper web 5 passes into the preforming station 11, which tapers like a funnel in the conveying direction F, until it opens into the deformation station 13 at its rear end in the conveying direction F. In the preforming station 11, the paper web 5 is preformed by being compressed at least in the transverse direction Q, for example, in that the longitudinal edges of the paper web 5 are optionally beaten and possibly rolled up by lateral funnel inner walls 23, 25 by means of guide rods 27, 29. The preformed paper web 5 is then further conveyed into an inner channel 37 of the deformation station, into which the embossing wheels 31, 33 penetrate.

The embossing wheels 31, 33 engage with their intermeshing teeth in a deformation region 35, the paper web 5 of these forms a cushioning product 3, the two extending in the longitudinal direction L crush cavities 7, 9 and between the crushing cavities 7 and 9 the embossing wheels 31, 33 has formed wave-like embossing profile 8. The cushioning product 3 is discharged from the device 1 in the further course of delivery, as shown schematically in Figure 3. Before being discharged from the device 1, the cushioning product 3 can be conveyed in the conveying direction F along or through a separating station, such as the rotary cutter 15 shown here by way of example, which starts with a (rotary) cutting stroke can separate individual Förderldssen of the strand-shaped padding product 3.

The deformation station 13 is shown in Figures 1 and 2 in section. As can be seen in FIG. 3, the upper conveying roller 31 consists of an embossing gearwheel 31a, which is provided on the right and left with a respective side disk 31b rotating in transverse direction to the conveying direction F. The side discs 31b have approximately the same or a slightly smaller outer diameter than the embossing wheel 31. The lower embossing roller 33 consists of only one embossing gear which is as wide in the transverse direction Q as the gear 31a of the upper embossing roller 31. The teeth of the embossing rollers 31st and 33 intervene for conveying and deforming the paper web 5 in a deformation region 35. In the exemplary embodiment shown here the pitch circle diameter D ₃ i of the upper embossing wheel 31 is the same as the pitch circle diameter D ₃₃ of our stamping wheel 33. The center distance of the embossing rolls 30, 33 corresponds approximately to the sum of the pitch circle radii. In the contact region of the embossing rollers 31, 33, a deformation plane D is preferably defined by a common Wälzkreistangente. The deformation plane D lies in the vertical direction V approximately at the center of the conveying height of the paper web 5 in the conveying direction F.

The deformation station 13 has, as stated above, an inner channel 37 which is bounded in the vertical direction by a lower channel wall 38 and an upper channel wall 39, each having a recess 32, 34 for the lower and upper embossing roller 31, 33. With the aid of the inner channel 37, it is ensured that the regions of the embossing rollers 31, 33 which can come into contact contact with the paper web 5 in the horizontal direction H always have a speed component which is oriented in the same direction as the conveying direction F. As a result, a run-up of the paper web 5 on the embossing rollers is a journey, 33 avoided with the eventual result as paper jams. The Wälzkreisdurchmesser D ₃₁ and D _{33 of} the embossing rollers 31 and 33 is preferably between 8 and 12 cm, and more preferably about 10 cm. The width of the embossing rollers 31, 33 in the transverse direction Q is usually less than 30 cm, preferably less than 20 cm, in particular less than 10 cm. The transverse width of the embossing rollers 31, 33 may be, for example, about 30 mm to about 70 mm, preferably between 30 and 50 mm.

Figures 1 and 2 show the rear in the conveying direction F area of the preforming station 11. Figures 4 and 5 show a rear view and a perspective view of the exemplified embodiment of a cushioning product manufacturing apparatus according to the invention l with a view of the preforming station 11, wherein a cover of the preforming station ll for recognizability of the inner components is not shown. It is clear that, according to operation, a cover extends over the guide surface 21 of the preforming station 11 over the entire surface in the transverse direction Q and horizontal direction H via the preforming station 11.

The lower guide surface 21 of the preform station 11 forms the bottom of the preform station 11 in the vertical direction V. The lower guide surface 21 extends transversely between a left sidewall 23 and a right sidewall 25. The sidewalls 23 and 25 are funnel-shaped toward the entrance of the deformation station 13 , As described above, during transport of the paper web 5 by the cushioning product manufacturing apparatus 1, the longitudinal side edges of the paper web 5 are guided against the hopper inner walls 23-25 of the preforming station 11 to hit the longitudinal edges of the paper web 5.

The turning in and, if appropriate, rolling in of the paper web longitudinal ends is assisted by the guide rods 27 and 29 respectively extending parallel to one of the funnel inner walls 23 or 25. The left in the conveying direction F guide rod 27 terminates in the conveying direction F in front of the right guide rod 29. The distance of the right guide rod 29 to the deformation station 13 is thus less than the distance of the left guide rod 27 to the deformation station 13. The longitudinal ends of the guide rods preferably widen conically ,

At the bottom of the two guide rods 27 and 29, a hold-down plate 28 is attached along the front in the conveying direction F half of the guide rods 27, 29. The hold-down plate extends over the entire surface between the guide rods 27 and 29 above the guide surface 21.

In the preforming station, the paper web 5, after it has entered the device 1 between the guide rollers 18 and 19 of the guide station 17, is guided below the hold-down plate 28 and above the guide surface 21. The hold-down plate 28 has the central region of the preforming station 11 has a convexly projecting in the conveying direction F, which ends several centimeters in front of the guide rods 27 and 29, in particular already before the expanded end portion. Between the rear end of the hold-down plate 28 and the deformation station 13 in the conveying direction F, the lifting device 4 configured by way of example as a wedge 41 is arranged. The central region of the paper web 5 guided between the guide surface 21 and the hold-down plate 28 (cf., for example, FIG. 2) is guided in the conveying direction F against the lifting device 4 during the production of cushioning products, which then lifts the central region of the paper web. In order to avoid damage or even tearing and possible accumulation of accumulation, the wedge 41 continuously leads from the guide surface 21 upwards.

The lower base 43 of the wedge 41 is preferably in full contact with the guide plate 21. A guide wedge 41 is shown in detail in Figures 6a, 6b, 6c and 6d. As can be seen in the perspective view according to FIG. 6 d, the wedge 41 has a variable cross-sectional area in the conveying direction F, the cross-sectional areas which are discussed herein being in a plane in the transverse direction Q and vertical direction V vertically on the guide surface 21 and / or the deformation plane D extends.

The wedge has an inclined ramp surface 42, which with the flat guide surface 21 an angle α between preferably 130 ⁰ and 160 ⁰ , in particular 155 ⁰ , spans. As shown, the ramp surface 42 may be formed as a continuous, in particular straight, rising surface between the guide surface 21 and an upper end of the wedge 41 in the vertical direction V.

The highest point of the wedge 41 can preferably run as a saddle region 45 with a longitudinal extent in the horizontal direction, ie transversely, in particular perpendicular to the vertical direction V as well as to the transverse direction Q. The length Ls of the saddle region 45 is preferably between 5 mm and 35 mm, in particular about 10 mm. The vertical height Ιΐκ of the wedge 41 is preferably between 25 mm and 45 mm, preferably about 35 mm. The wedge length L _K may preferably be between 80 mm and 120 mm and is particularly preferably about 100 mm.

The preferably greatest transverse width b c of the wedge 41 may preferably be between 10 mm and 60 mm, in particular between 25 mm and 45 mm, preferably approximately 35 mm. The wedge 41 may, for example, in its rear in the conveying direction F. Section 47 have a maximum transverse width bic of about 35 mm. In a forward direction in the conveying direction F, the wedge 41 can widen in a wedge-like manner in the transverse direction Q. The wedge 41 can have a front γ Pfeilungsabschnitt 46 with a sweep angle, wherein the sweep angle γ is preferably not more than 25 °, in particular at most 15 ^0th The sweep angle y can go to 0 ° and thus disappear.

The front view according to FIG. 6b gives an idea of the cross-sectional area of the wedge 41. The cross-sectional surface of the wedge 41 can be prepared starting taper from the base 43 in the vertical direction V up, ß example, with a taper angle, which is preferably not more than 45 ^0, more preferably about 35 ^0th The taper angle β can also be realized vanishing, virtually equal to °.

The distance a in the conveying direction F between the rear end in the conveying direction F and the rear side R of the wedge 41 and the axes A of the embossing rollers 31, 33 is preferably less than 200 mm. Preferably, the distance a is in the range between 30 mm and 170 mm.

The distance b in the conveying direction F between the end of the longer conveying rod 29 and the rear end of the wedge 41 in the conveying direction F is preferably less than 100 mm, in particular about 60 mm or less. It is preferable that, as shown, the rear end in the conveying direction F lies behind the end of the guide rods 27 and 29, respectively. However, it is also conceivable that the back R of the wedge already in the conveying direction F before the guide rods 27, 29 ends (not shown in detail).

The conveyor rods 27, 29 are preferably arranged with their respective rod axis at a distance f of 25 mm to 45 mm, preferably parallel above the guide surface 21. In particular, the upper edge of the wedge 41 is arranged up to 10 mm above or up to 10 mm below the deformation plane D. The upper edge of the wedge 41 is preferably about 10 mm ± 5 mm above the plane of deformation D.

The merlanals disclosed in the foregoing description, the figures and the claims may be of importance both individually and in any combination for the realization of the invention in the various embodiments LIST OF REFERENCES I. Upholstery product manufacturing device

3 cushioning product

4 lifting device

5 paper web

7, 9 crushed cavities

8 imprint profile

Ii preform station

13 deformation station

15 rotary cutter

17 management device

18, 19 pulleys

21 guide surface

23, 25 funnel inner wall

27, 29 guide rod

28 hold-down plate

31, 33 embossing roll

31a embossing gear

31b side window

32, 34 recess

35 deformation area

37 inner channel

38, 39 canal wall

41 wedge

42 ramp area

43 base

45 saddle area

46 sweep section

47 section

A axis

D deformation level

F conveying direction

H horizontal direction 2018/061848

15

L longitudinal direction

Q transverse direction

Rear side

V vertical direction

Claims

Claims:

Device (1) for manufacturing a cushioning product (3) from a single-layer or multi-ply continuous paper web (5), comprising:

a funnel-like preform station (11) for compressing, preferably wrapping or curling, the paper web (5) in the transverse direction (Q); and

a to the preforming station (11) in the conveying direction (F) of the paper web (5) subsequent deformation station (13) with two embossing rollers (31, 33), in a

Deformation region (35) intermeshing to transform the paper web (5) into a cushioning product (3) having at least one longitudinally extending (L) crumple cavity (7, 9), wherein the preforming station (13) has an in

Having conveying direction (F) before the embossing rollers (31, 33) arranged lifting device (4) for lifting a central region of the paper web (5).

2. Device according to claim 1, wherein the preforming station has a lower guide surface (21), from which the lifting device (4) in particular a harmonious and / or continuously upward raising of the paper web (5) by at least 10 mm, at least 25 mm and / or at most 100 mm, at most 45 mm, preferably about 35 mm.

3. Device according to claim 1 or 2, wherein the lifting device (4) is adapted to the central region of the paper web (5) at the vertical height of the

To increase deformation range, in particular the embossing rollers (31, 33)

Pitch circle diameter (D ₃ i, D ₃₃ ), whose contact point defines a deformation plane (D), wherein the lifting device (4) lifts the central region of the paper web up to at least the height of the deformation plane (D).

4. Device according to one of the preceding claims, wherein the lifting device (4) comprises a wedge (41) which is formed in the conveying direction (F) at least partially rising, wherein the wedge (41) preferably has a cross-sectional area in the transverse direction (Q), extending from a lower base (43) of the wedge in

Vertical direction (V) tapers upwards, wherein in particular the wedge (41) has a saddle region (45) of constant height (hs) in its in the conveying direction rear, in particular the highest section.

5. Apparatus according to claim 4, wherein the wedge (41) in the conveying direction (F) has a base (43) of a transverse width (DK), at least in sections at least 10 mm, at least 25 mm and / or at most 100 mm, at most 45 mm , preferably about 35 mm, measures, wherein in particular the base (43) in the conveying direction (F) at least partially has an increasing transverse width and / or the base (43) in the conveying direction (F) at least partially a constant transverse width κ).

6. Device according to one of the preceding claims, wherein preforming station

Guide rods (27, 29) for supporting the folding and / or curling of the paper web (5) in the preforming station (11), in particular between lateral funnel inner walls (23, 25) of the preforming station (11), one guide rod (27, 29 ) parallel to a funnel inner wall (23, 25) runs parallel,

wherein in particular the guide rods (27, 29) are arranged at a preferably constant vertical distance to a lower guide surface (21) of the preform station, wherein in particular on the guide rods (27, 29) a hold-down device, such as hold-down plate (28), for holding down in particular the central Region of the paper web (5) is arranged, which extends in the conveying direction (F) at least in sections transversely between the guide rods (27, 29).

7. Apparatus according to claim 6, wherein the lifting device (4) lifts the central region of the paper web (5) above a lower edge of the guide rods (27, 29) and / or optionally the hold-down device (28), wherein in particular the lifting device ( 4) raises the central region of the paper web (5) at most to below the upper edge of the guide rods (27, 29).

8. Device according to one of the preceding claims, wherein a distance (a) from the axis of rotation (A) of one of the embossing rollers (31, 33) to the lifting device (4) in

Conveying direction is at least as large as an embossing roller radius (D ₃₁ , D ₃₃ ),

wherein, in particular, the distance (a) from the axis of rotation (A) of one of the embossing rollers (31 ₎ 33) to the lifting device (4) in the conveying direction (F) is smaller or larger than a distance from the axis of rotation (A) of one of the embossing rollers (31, 33) to the in

Förderrrichtung rear end of a guide rod (27, 29).

9. Device according to one of the preceding claims, wherein the deformation station (13) has an inner channel (37) for guiding the preformed paper web (5), the channel walls (38, 39) having recesses (32, 34) through which one each Embossing roller (31, 33) protrudes, wherein in particular the lower guide surface (21) of the Deformationsstation (11) kink-free or with a transition edge in the inner channel (37) passes.

10. Device according to one of the preceding claims, further comprising one of

Preforming station (11) in the paper conveying direction (F) upstream guide means (17), such as a sliding edge or a deflection roller (18, 19), for aligning the paper web (5) for the preforming station (11).