Cushion forming machine

Abstract

The invention relates to a cushion forming machine (10) having a forming device (22) in which a flat web-shaped tubular starting material (16) is expanded into a three-dimensional tubular cushion product (20). The forming device (22) comprises, when viewed in the movement direction of the cushion product (20), a first roller assembly (38), a second roller assembly (40), and a third roller assembly (42), the first and second roller assemblies (38, 40) preferably belonging to a separating device (44) and the second and third roller assemblies (40, 42) preferably belonging to a crumpling device (46). According to the invention, the first, second, and third roller assembly (38, 40, 42) can be operated independently of one another.

Description

[0001] Applicant:

[0002] Storopack Hans Reichenecker GmbH

[0003] Untere Rietstraße 30

[0004] 72555 Metzingen

[0005] General Power of Attorney: 514560 . 2

[0006] 35020910WO 12.09.2025

[0007] KNA / MAY

[0008] Title: Upholstery forming machine

[0009] Description

[0010] The invention relates to a cushion forming machine according to the preamble of claim 1.

[0011] DE 102 42 998 A of fenbart discloses a cushion forming machine for the production of elastic, tubular cushioning products. These can be used to fill empty spaces in shipping containers and thus protect the items contained within. For this purpose, the cushion forming machine has a forming unit. This unit draws a tubular, web-shaped, and flat starting material onto a floating, elongated core, thereby expanding it into the tubular cushioning product. After expansion, the tubular cushioning product is further crumpled lengthwise by the forming unit. The forming unit comprises a plurality of roller arrangements.A central electric drive motor can be provided to drive the roller arrangements, to which a gearbox is flanged for reducing the rotational speed of the roller arrangement, or two drive motors can be provided, which also drive the roller arrangements via gearboxes.

[0012] The present invention aims to create a cushion forming machine with relatively small dimensions and lower weight, which also operates reliably.

[0013] This problem is solved by a cushion forming machine with the features of claim 1. Advantageous embodiments are specified in the dependent claims.

[0014] In the upholstery forming machine according to the invention, the drive train for each of the roller assemblies is simplified. Since each roller assembly can be driven independently by means of a separate drive train, this train can be designed with a smaller number of components, which can also be lighter, as only the necessary torque for each roller assembly needs to be transmitted. Consequently, the overall weight of the upholstery forming machine is reduced compared to upholstery forming machines previously used in practice. Furthermore, the movement speed of the starting material or the upholstery product before and after each roller assembly can be individually adjusted by means of the independent drive of the roller assemblies.

[0015] Specifically, this is achieved using a cushion forming machine with a forming unit in which a flat, web-like, tubular, and therefore rather two-dimensional starting material is expanded into a three-dimensional, tubular cushioning product. The flat, web-like, and tubular starting material can be, for example, a flattened paper tube, either wound onto a roll or provided as a zigzag-folded stack of paper. The starting material can include kraft paper, which is inherently very stable.

[0016] The forming device comprises – in the direction of movement of the upholstery product – a first roller arrangement, a second roller arrangement, and a third roller arrangement, wherein the first and second roller arrangements preferably belong to a separating device and the second and third roller arrangements preferably to a crumpling device. Together, the roller arrangements move the starting material during the forming process into an upholstery product in the direction of movement through the upholstery forming machine, for example, from an inlet area to an outlet area of ​​the forming device or the upholstery forming machine.

[0017] The separating device cuts the cushioning product from the remaining raw material as soon as the cushioning product reaches a predetermined length. The separation of the cushioning product can be triggered manually or automatically. The crumpling device compresses the raw material lengthwise, thus crumpling it into a cushioning product.

[0018] This creates irregular folds that contribute to the elastic cushioning properties of the upholstery product.

[0019] The rollers of the first and second roller arrangements can have a uniform or flat circumferential surface. The third roller arrangement can include rollers with conveying sections projecting radially from one of the rollers' circumferential surfaces. These conveying sections can be regularly spaced apart from one another in the circumferential direction of the rollers. The design of the conveying wheels enables the transport of the cushioning product in the direction of movement, so that the crumpling of the cushioning product is essentially maintained.

[0020] According to the invention, the first, second, and third roller assemblies can be driven independently of one another. The roller assemblies are therefore not kinematically coupled to each other, at least temporarily, so that the roller assemblies can have completely different speeds at any given time. For example, one roller assembly can be stationary, one roller assembly can rotate at one speed, and another roller assembly can rotate at a different speed. Even at least temporarily different directions of rotation from one roller assembly to another are possible. In this way, completely new production concepts and, consequently, entirely new types of upholstered products are conceivable.

[0021] An at least temporarily independent drive for the first, second, and third roller assemblies thus enables precise control of the individual roller assemblies, allowing the rotational speeds of the rollers in one assembly to be adjusted at least temporarily independently of the other roller assemblies. Depending on the design of the cushion forming machine, more than three roller assemblies may also be provided. In this case, at least one additional roller assembly can also be driven independently of the other roller assemblies, or its motion can be coupled to one of the first, second, or third roller assemblies, so that torque can be transmitted between coupled roller assemblies, i.e., from one roller assembly to another.

[0022] In a further development, it is provided that each roller assembly is assigned its own drive motor, in particular a servo motor. Consequently, each roller assembly can be driven by a separate drive motor that is kinematically independent of the others. Accordingly, the first roller assembly can be driven by a first drive motor, the second roller assembly by a second drive motor, and the third roller assembly by a third drive motor. This makes it possible to use smaller and lighter drive motors. Separate drive motors also allow for the simple implementation of different speeds, torques, speed gradients, and directions of rotation. For example, a drive motor can be an electric motor, in particular a servo motor. A servo motor is an electric motor that is additionally equipped with a sensor for direct or indirect position determination of a motor shaft.This allows control of the angular position of the servo motor's shaft, as well as the rotational speed and acceleration. Advantageously, this enables precise and independent control of the rotational speed and angle of the rollers in the roller assemblies, both between the assemblies and in coordination with each other.

[0023] In a further development, it is provided that at least one drive motor is operatively connected to its associated roller assembly via a transmission, in particular via a belt drive. A roller of a roller assembly can be arranged directly on the output shaft of the drive motor, or the output shaft of the drive motor can be operatively connected to the roller assembly via a transmission element such as a belt drive, so that the torque of the drive motor can be transmitted to the roller assembly.

[0024] In a further development, it is provided that at least one roller assembly has a gearbox, in particular a bevel gear, for transmitting the torque to the individual rollers of the roller assembly. The gearbox can be kept compact, since only the rollers of the roller assembly need to be connected to each other, so that the torque of the corresponding drive motor can be transmitted to the roller assembly. When using a bevel gear, the torque can be easily redirected to the rollers of the roller assembly, so that the rollers of the roller assembly, arranged circumferentially around the core, are driven as desired. A bevel gear allows for easy assembly, requires little maintenance, and has a long service life. In principle, it would also be conceivable, however, that each roller of a roller assembly has its own, and therefore correspondingly small, drive motor.In this case, a gearbox could be completely dispensed with. This would open up entirely new possibilities for the manufacture and design of upholstered products.

[0025] In a further development, it is provided that the speed and / or torque of at least one drive motor can be adjusted independently of the other drive motors. Preferably, the speed and / or torque and / or direction of rotation of all drive motors can be adjusted individually and independently of the other drive motors. The adjustment of each drive motor can be carried out, for example, via a central control and / or regulating device.

[0026] In a further development, the forming device is designed to include a floating core. The core can be conically elongated and, in a sense, have the overall shape of an elongated rugby ball. "Floating" means that the core is not rigidly connected to, for example, a supporting structure, but is held freely movable within certain limits, with a certain degree of play, particularly radial play, and a continuous gap in the circumferential direction, as is known, for example, from DE 102 42 998 Al. The starting material is drawn onto the core from the inlet area and is thereby expanded.

[0027] In a further development process, it is stipulated that the rollers of the roller assemblies are arranged around the core in the circumferential direction. Or, in other words: each roller assembly comprises a plurality of rollers, and this plurality of rollers of a roller assembly is arranged circumferentially around the core. The rollers of a roller assembly can be evenly spaced from one another in the circumferential direction. The even distribution of the rollers around the core ensures that the starting material is drawn evenly onto the core and that the starting material is crumpled as uniformly as possible in the crumpling device.

[0028] The core can have additional rollers (auxiliary rollers). These auxiliary rollers can be positioned opposite the rollers, particularly those of the first and second roller assemblies, on the core and cooperate with them, so that the feed material is moved between the rollers of the first and second roller assemblies and the auxiliary rollers. The auxiliary rollers serve to reduce friction between the core and the feed material and are not themselves driven.

[0029] In a further development process, it is stipulated that, to separate the cushioning product at a predetermined tear point, the rotational speed of the rollers in the first roller assembly is set lower than the rotational speed of the rollers in the second roller assembly for a period of time. Because the rollers in the first roller assembly rotate more slowly than the rollers in the second roller assembly – typically for a short time – a tensile force is exerted on the starting material between the first and second roller assemblies until it tears at the predetermined tear point. The cushioning product is thus easily separated from the remaining starting material without the need for cutting elements. The starting material can, for example, have circumferentially arranged perforations to serve as the predetermined tear point.It is conceivable that the rotational speed of the rollers in the first roller assembly could be reduced, or that the rollers in the first roller assembly could be stopped, while the rollers in the second roller assembly continue to be driven. Alternatively, the rotational speed of the rollers in the second roller assembly could also be briefly increased (this would be kinematically equivalent).

[0030] In a further development, it is provided that the second roller assembly can be driven at a higher speed, at least temporarily, than the third roller assembly, so that the crumpling device compresses the cushioning product longitudinally. Because the third roller assembly is driven at a lower speed than the second roller assembly, the starting material is compressed against the third roller assembly in the direction of movement and thereby compressed or crumpled.

[0031] Further training in this area envisages the ability to adjust the speed difference between at least the second and third roller arrangements. This allows the degree of crumpling to be varied. This is even possible during the production of a cushioning product, enabling the creation of products with varying degrees of crumpling along their length. Furthermore, it is possible to reduce the length of areas with low crumpling at the front and / or rear of the cushioning product, or even to eliminate such areas entirely. It is also conceivable that the first roller arrangement could be driven at a higher speed than the second at certain times, thus pre-crumpling the material between these two roller arrangements. It is also conceivable that during the production of a

[0032] All roller arrangements in the upholstery production process are driven with predefined and coordinated speed profiles to produce specific types of upholstered products. The types of upholstered products and their corresponding speed profiles can be stored in a control and / or regulating device and selected by an operator.

[0033] For example, one roller assembly can be driven at a constant speed, while one or both other roller assemblies can be driven at a speed that initially increases and then decreases. Due to the individual drive of the roller assemblies, almost any production scenario is possible.

[0034] According to one aspect of the invention, the following is proposed:

[0035] Cushion forming machine, comprising a forming device in which a flat, web-shaped, tubular starting material is expanded into a three-dimensional, tubular cushion product, wherein the forming device, viewed in the direction of movement of the cushion product, comprises at least a first roller arrangement, a second roller arrangement, and a third roller arrangement, wherein the first and second roller arrangements preferably belong to a separating device and the second and third roller arrangements preferably to a crumpling device, characterized in that the first roller arrangement can be driven at least temporarily independently of the second roller arrangement, the second roller arrangement can be driven at least temporarily independently of the third roller arrangement, and the third roller arrangement can be driven at least temporarily independently of the first.

[0036] The roller arrangement is driveable.

[0037] One embodiment of the invention is explained below with reference to the drawings. The drawing shows:

[0038] Figure 1 shows a perspective view of an upholstery forming machine from a slanted front / top angle;

[0039] Figure 2 is a perspective view of the upholstery forming machine from Figure 1 from a rear / top angle;

[0040] Figure 3 shows a perspective view of the cushion forming machine cut in the longitudinal direction, similar to Figure 1;

[0041] Figure 4 shows a perspective view of the upholstery forming machine from the rear, cut across the longitudinal direction; and

[0042] Figure 5 shows two diagrams in which possible speed profiles of the roller arrangements during the production of an upholstery product are plotted over time.

[0043] For the sake of clarity, not all reference symbols are included in all figures.

[0044] A cushion forming machine is represented in the figures by the reference symbol 10. As shown in Figure 1, the cushion forming machine 10 comprises a housing 12 and a

[0045] Inlet area 14 for a flat, web-shaped, and tube-like starting material 16, for example, a flattened paper tube. For example, the housing 12 can comprise an internal support structure made of metal (not visible here) and an outer shell made of plastic. The flat, web-shaped, and tube-like starting material 16 is indicated only by an arrow.

[0046] The cushion forming machine 10 also includes an outlet area 18 for a three-dimensional tubular cushion product 20. The three-dimensional tubular cushion product 20 is produced from the flat, web-shaped, and tubular starting material 16 in a forming unit 22, which is functionally arranged between the inlet area 14 and the outlet area 18 (Figure 2). The three-dimensional tubular cushion product 20 is indicated in Figure 1 by a dashed circle and by arrows.

[0047] In the forming device 22, an elongated core 24 with a longitudinal axis 26 is floatingly mounted (Figure 3). The core 24 comprises an upstream longitudinal section 28 (viewed in the direction of movement from the inlet region 14 to the outlet region 18) of the starting material 16 and the cushioning product 20, and a downstream longitudinal section 30. The upstream longitudinal section 28 in turn has an upstream partial longitudinal section 32 and a downstream partial longitudinal section 34. The upstream partial longitudinal section 32 is conical overall. The downstream partial longitudinal section 34 is cylindrical overall.The downstream longitudinal section 30 has a plurality of contact surfaces 36 extending in the longitudinal direction, i.e. parallel to the longitudinal axis 26, which can be contacted by the tubular cushion product 20 during operation of the cushion forming machine 10 in order to guide the tubular cushion product 20 to the outlet area 18.

[0048] As can be seen from Figure 3, the forming device 22—viewed in the direction of movement of the upholstery product 20—examples of a first roller arrangement 38, a second roller arrangement 40, and a third roller arrangement 42. These roller arrangements 38, 40, and 42 cooperate with the core 24 of the forming device 22. The first and second roller arrangements 38 and 40 belong to a separating device 44, and the second and third roller arrangements 40 and 42 belong to a crumpling device 46. Each roller arrangement 38, 40, and 42, in turn, exemplarily comprises four driven rollers 48, 50, and 52. The four rollers 48, 50, and 52 of a roller arrangement 38, 40, and 42 are arranged evenly distributed in the circumferential direction of the core 24. Figure 3 shows the respective upper and lower rollers 48, 50 and 52 of the first, second and third roller arrangement 38, 40 and 42.

[0049] The first, second, and third roller arrangements 38, 40, and 42 can be driven independently of one another. Three identical drive motors 54 are provided for this purpose. Each roller arrangement 38, 40, and 42 is thus assigned its own drive motor 54. In Figure 3, the drive motors 54 are shown, by way of example, arranged below the roller arrangements 38, 40, and 42 and parallel to each other in the direction of movement of the upholstery product 20. The longitudinal axes 56 of the drive motors 54 are, by way of example, perpendicular to the longitudinal axis 26 of the core 24 and horizontally oriented in the normal operating position of the upholstery forming machine 10. The drive motors 54 can be designed as servo motors.

[0050] The drive of each of the first, second, and third roller arrangements 38, 40, and 42 is carried out in the same manner as an example shown here. This will be explained below using the first roller arrangement 38 in Figure 4 as an example:

[0051] The first roller assembly 38 has a bevel gear unit 58 (also referred to as the gear unit 58). The bevel gear unit 58 comprises four shafts 60, which are arranged perpendicular to each other circumferentially around the core 24. The rollers 48 of the first roller assembly 38 are shown here, by way of example, held rotationally fixed on the shafts 60 by means of a keyway connection. Pairs of bevel gears 62 are provided between circumferentially adjacent shafts 60, so that a torque originating from a drive shaft 60 of the bevel gear unit 58 is deflected by 90° and can be transmitted to the other shafts 60 of the first roller assembly 38, thus driving the rollers 48 synchronously (for the sake of simplicity, the drive shaft and the other shafts of the bevel gear unit 58 all bear the same reference numeral 60). In Figure 4, three pairs of bevel gears 62 are provided in the bevel gear unit 58 of the first roller assembly 38.

[0052] A longitudinal axis 63 of the drive shaft 60 of the bevel gear unit

[0053] In this case, 58 runs parallel to the longitudinal axis 56 of the drive motor 54. A free end 64 of the drive shaft 60 is operatively connected to an output shaft 68 of the drive motor 54 via a belt drive 66.

[0054] The core 24 has four auxiliary rollers 70 and four auxiliary rollers 72 (see Figure 3), which are not driven. The auxiliary rollers 70 are located in the region of the rollers 48 of the first roller assembly 38 and just upstream of them, whereas the auxiliary rollers 72 are located in the region of the rollers 50 of the second roller assembly 40 and just downstream of them. Figure 3 shows the upper and lower auxiliary rollers 70 and 72. The driven rollers 52 of the third roller assembly 42 have a plurality of radially outward projecting conveying sections 74. They are arranged radially outward opposite an initial section of a respective contact surface 36, viewed in the direction of movement.

[0055] As mentioned at the outset, the core 24 is mounted in a "floating" manner. This means that the core 24 is not connected to a support structure of the cushion forming machine 10 via a rigid or flexible connecting element, but rather that there is a continuous gap between the core 24 and the elements of the forming device 22 that surround it radially outwards, both circumferentially and longitudinally, through which the tubular cushion product 20 can pass.

[0056] In the axial direction, the position of the core 24 is approximately determined by the fact that the outer diameter of the core 24 in the area of ​​the auxiliary rollers 70 and 72 is larger than the inner width between opposing rollers 48 and 50. The auxiliary rollers 70 are elastically actuated against the rollers 48 of the first roller arrangement 38, and the auxiliary rollers 72 are elastically actuated against the rollers 50 of the second roller arrangement 40. The conveying sections 74 of the rollers 52 cooperate with the associated, and in this case resilient, initial section of the contact surface 36.

[0057] The cushion forming machine 10 operates as follows: the flat, web-shaped, and tubular starting material 16 is fed to the inlet area 14 via inlet-side guide rollers 76, where it is drawn onto the conical upstream longitudinal section 32 of the core 24 and thereby expanded into a tubular shape. The starting material 16 is conveyed by means of the driven rollers 48 and 50 of the first and second roller arrangements 38 and 40. For normal conveying, the rollers 48 and 50 rotate synchronously and at the same speed.

[0058] In the crumpling device 46, the rollers 52 of the third roller arrangement 42 rotate at a lower speed than the rollers 50 of the second roller arrangement 40. This compresses the tubular starting material 16, which is wound onto the core 24 with radial play, in its longitudinal direction, thereby crumpling it. The crumpled, tubular cushion product 20 is guided downstream from the third roller arrangement 42 via the downstream longitudinal section 30 of the core 24 to the outlet area 18.

[0059] To produce a discrete cushioning product 20 of a desired length, the starting material 16 has predetermined tear points in the form of perforation lines at regular intervals (viewed along its length) (not shown). If a desired length of cushioning product 20 is to be cut from the remainder, the rollers 50 of the second roller arrangement 40 in the cutting device 44 are briefly driven at a higher speed than the rollers 48 of the first roller arrangement 38. For example, the rollers 48 of the first roller arrangement 38 are briefly stopped, while the rollers 50 of the second roller arrangement 40 continue to operate at their previous speed, if a perforation line is located in the cutting device 44 between the first and second roller arrangements 38 and 40.This separates the length of a cushioning product 20 conveyed by the rollers 50 of the second roller arrangement 40 along the perforation line from the residual material held by the stationary rollers 48 of the first roller arrangement 38.

[0060] The operation of the upholstery forming machine 10 is controlled or regulated by a control and / or regulating device (not shown). This device may, for example, include a human-machine interface (HMI) with which an operator can make inputs (e.g., set a length and / or thickness of the crumpling of the upholstery product or select a type of upholstery product) and through which information can be displayed to the operator. The control and / or regulating device controls, in particular, the speeds of the drive motors 54 of the roller assemblies 38, 40, and 42.

[0061] Since each roller arrangement 38, 40, and 42 is assigned its own drive motor 54, very specific and temporally coordinated speed profiles of the drive motors 54 can be realized during the production of a discrete upholstery product 20. In this way, different types of upholstery products 20 can be manufactured. These types can differ, for example, in the type and degree of crumpling, as well as, of course, in the length of the upholstery product. The degree of crumpling along the length of an upholstery product can also be influenced in this way and define the type of upholstery product 20.

[0062] As an example, Figure 5 shows two diagrams in which the speeds V of the rollers of roller assemblies 38, 40, and 42 are plotted against time t during the production of a cushioning product 20. Production of the cushioning product 20 begins at time tl and ends at time t2. The speed V of roller assembly 38 over time t is represented by a dotted line. The speed V of roller assembly 40 over time t is represented by a dashed line. The speed V of roller assembly 42 over time t is represented by a dash-dotted line.

[0063] The diagram at the top of Figure 5 represents a "classic" production process for a cushioning product 20. During production, the rollers of roller assemblies 38 and 40 rotate at the same speed. In contrast, the rollers of roller assembly 42 rotate at a lower speed. The starting material is thus compressed or crumpled in its longitudinal direction between roller assemblies 40 and 42. At times tl and t2, the speed of roller assembly 38 is briefly and significantly reduced. This causes the starting material to tear at a predetermined tear point located between the two roller assemblies 38 and 40, thereby producing the discrete cushioning product 20 with a desired length.

[0064] The lower diagram in Figure 5 merely represents an example of a possible "alternative" production of a cushioning product 20. During production, the rollers of the roller assembly 40 rotate at a slightly lower speed than the rollers of the roller assembly 38. This pre-crumples the starting material between the roller assemblies 38 and 40. Overall, the rollers of the roller assembly 42 rotate more slowly during the production of the cushioning product 20 than both the rollers of the roller assembly 38 and the rollers of the roller assembly 40. The corresponding difference in rotational speed is denoted by Dl in the lower diagram of Figure 5.

[0065] However, the speed of the rollers of roller assembly 42 is not constant over time t. After breaking off at time t1, the speed of the rollers of roller assembly 42 increases slightly, then decreases again until breaking off at time t2. The corresponding speed difference compared to the speed of the rollers of roller assembly 40 is labeled D2 in the lower diagram of Figure 5. It can be seen that the speed difference between the rollers of roller assembly 40 and the rollers of roller assembly 42 can be set, controlled, or regulated. In this example, the crumpling is more pronounced at the end of production than at the beginning and in the middle. It can be seen that the speed profiles of the rollers of roller assemblies 38, 40, and 42 are coordinated with each other in a very specific way.

[0066] It is understood that the speed profiles in the two diagrams of Figure 5 are merely examples, and that entirely different, and indeed virtually any, coordinated speed profiles are possible due to the individual control of the drive motors 54. This would be even more true if all rollers of the roller arrangements were each driven by their own drive motors.

[0067] The control and regulation unit can store different speed profiles corresponding to different types of upholstery products, which can be selected, for example, by the operator at the HMI.

Claims

Patent claims 1. Cushion forming machine (10) with a forming device (22) in which a flat, web-shaped, tubular starting material (16) is expanded into a three-dimensional tubular cushion product (20), wherein the forming device (22) comprises, viewed in the direction of movement of the cushion product (20), at least a first roller arrangement (38), a second roller arrangement (40) and a third roller arrangement (42), wherein the first and second roller arrangements (38, 40) preferably form a separating device (44) and the second and third roller arrangements (40, 42) preferably form a crumpling device (46), wherein the first roller arrangement (38) can be driven at least temporarily independently of the second roller arrangement (40), and the second roller arrangement (40) can be driven at least temporarily independently of the third roller arrangement (42).and the third roller arrangement (42) can be driven at least temporarily independently of the first roller arrangement (38), characterized in that the second roller arrangement (40) can be driven at least temporarily at a higher speed than the third roller arrangement (42), and that a speed difference (D2) can be set at least between the second roller arrangement (40) and the third roller arrangement (42).

2. Cushion forming machine (10) according to claim 1, characterized in that each roller arrangement (38, 40, 42) a separate drive motor (54), in particular a servo motor, is assigned.

3. Cushion forming machine (10) according to claim 2, characterized in that at least one drive motor (54) is operatively connected to the roller arrangement (38, 40, 42) associated with it via a transmission, in particular via a belt drive (66).

4. Cushion forming machine (10) according to one of claims 2 to 3, characterized in that at least one roller arrangement (38, 40, 42) has a gear unit (58), in particular a bevel gear unit, for transmitting the torque to the individual rollers (48, 50, 52) of the roller arrangement (38, 40, 42).

5. Cushion forming machine (10) according to one of claims 2 to 4, characterized in that the speed and / or torque of at least one drive motor (54) is adjustable.

6. Cushion forming machine (10) according to one of the preceding claims, characterized in that the forming device (22) comprises a floatingly mounted core (24).

7. Cushion forming machine (10) according to claim 6, characterized in that rollers (48, 50, 52) of the roller arrangements (38, 40, 42) are arranged circumferentially around the core (24).

8. Upholstery forming machine (10) according to one of the preceding claims, characterized in that, for separating the upholstery product (20) at a predetermined tear point, the rotational speed of the rollers (48) of the first The roller arrangement (38) is adjustable for a period of time at a lower speed than the rotational speed of the rollers (50) of the second roller arrangement (40).

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