Device for holding and peeling off a film

Abstract

Device (10) for peeling a film from a roll, comprising a cylindrical element (12) receiving the roll, the ends of which are connected to or have handles (30, 32), a device (18) for adjusting the tension of the film to be peeled, and supports (18, 20) for the roll in its end regions, wherein the cylindrical element (12) has a first section (14) and a second section (16) axially adjustable to this, and at least one of the supports (18) has a conical geometry, at least in some areas, for interacting with the roll, characterized in that the support (18) having the conical geometry, at least in some areas, is adjustable along the longitudinal axis (38) of the cylindrical element (12) and to the section (14) from which the support extends.

Description

[0001] The invention relates to a device for holding and peeling off a film from a roll, comprising a cylindrical element receiving the roll, the ends of which are connected to or have handles, a device for adjusting the tension of the film during peeling, and supports for the roll in its end regions located in the area of ​​the ends of the cylindrical element, wherein the cylindrical element has a first section and a second section axially adjustable to this, and at least one of the supports has a conical geometry, at least in some areas, for interacting with the roll.

[0002] A corresponding device, also known as a stretch wrapper, is described in US 2013 / 0227913 A1. Spring-loaded brake elements are provided to adjust the film tension.

[0003] Stretch wrappers are used to secure goods, such as goods arranged on pallets for transport, by wrapping them with stretch film.

[0004] In a stretch wrapper according to GB 2 121 001 A, a tube is welded to a base plate, from which an L-shaped arm extends, with a first handle attached to its end. A second handle is located at the end of the tube opposite the base plate and is connected to a braking device. This device allows the tension of a film roll pushed onto the tube to be adjusted when the film is pulled off. Therefore, depending on whether the device is used by a left- or right-handed person, a different position must be assumed relative to the item being wrapped.

[0005] A stretch wrapper according to DE 20 2014 102 068 U1 has an L-shaped handle extending from a base, from which, in addition to a wave rod that receives a roll of film, two rollers extend, between which the film is guided in order to be able to adjust the tension when peeling off the film.

[0006] Corresponding stretch wrappers are often designed for a single film width, such as 430 mm or 500 mm, so that different devices are used for different roll core lengths.

[0007] The present invention is based on the objective of further developing a manually operated device of the type mentioned above in such a way that the tension and thus the elongation of the film resulting from wrapping goods can be easily adjusted.

[0008] Another aspect of the invention is to further develop a corresponding device in such a way that it can be used without difficulty by both right- and left-handed people. Regardless of this, ease of use is to be ensured.

[0009] Another aspect is the ability to handle rolls of different widths.

[0010] The invention provides for the solution that the at least one support, which at least partially has a conical geometry, is adjustable along the longitudinal axis of the cylindrical element and to the section from which the support originates.

[0011] According to the invention, a manually operated device for peeling off a film is proposed, which can be easily adjusted to film widths of different lengths, since the cylindrical element receiving the film roll is telescopic.

[0012] In order to easily adjust the tension of the film to be peeled off, it is provided that one of the supports, which interacts with one of the end faces of the roll, is adjustable along the longitudinal axis of the telescopic element, so that the pressure acting on the roll between the supports and thus the tension can be adjusted accordingly.

[0013] The further support preferably also has a conical or frustocylindrical geometry on the roller side, at least in some areas, so that simple centering of the roller between the supports is possible.

[0014] The conical shape also offers the advantage that rollers of different diameters can be used. These conical supports can be described as centering cones.

[0015] In other words, the supports have a dual function: firstly, to center the film roll, and secondly, to adjust the film tension. This allows the use of film rolls with or without a core, an advantage made possible by the centering cones.

[0016] The centering cones also offer the possibility of clamping rollers of different core diameters, such as 38 mm, 50 mm, 76 mm as common diameters.

[0017] In particular, the adjustable sections of the cylindrical element are designed to be axially adjustable relative to each other in a detent position. Fine adjustment to the width of the roll is then achieved by means of the axially adjustable support, and the tension can then be set by further adjustment.

[0018] Alternatively, the axially adjustable sections can be continuously adjusted in their distance, e.g. by means of threads.

[0019] The invention provides, in an inventive manner, that each section in its free end area is connected to the handle via a swivel joint, the axis of which runs perpendicular to the longitudinal axis of the pipe catcher element.

[0020] In this arrangement, a first joint section of the joint should be connected to the section, preferably in its extension, and the second joint section should transition into the handle like a handle or be designed as such.

[0021] It is specifically designed that the longitudinal axis of the cylindrical element directly intersects the axis of rotation. This design allows for easy gripping of the handles, which may optionally be rotatable around their longitudinal axis. The user can adjust the optimal angle of inclination of the device relative to the material being wrapped. It is suitable for both right- and left-handed users.

[0022] The handles are positioned at the very end of the cylindrical element that holds the film roll, allowing for easy 180° rotation without the need for repositioning. Despite this, the adhesive surface of the film can still face the item being wrapped.

[0023] In a further development of the invention, it is provided that magnets are integrated into the handles, so that the device can be attached, for example, to metal shelves, forklifts, pallet trucks, thus avoiding the usual lying around on a floor and eliminating a source of danger.

[0024] Further details, advantages and features of the invention will become apparent not only from the claims and the features to be derived therefrom - individually and / or in combination - but also from the following description of an embodiment shown in the drawings.

[0025] The single figure shows a schematic representation of a device 10 by means of which a stretch film is pulled from a roll in order to wrap and thus secure goods, in particular those which are to be transported on pallets.

[0026] The device 10 has a cylindrical element 12 that receives the roll and consists of longitudinally adjustable sections 14, 16, which are therefore telescopic, and which have supports 18, 20 at their ends, between which the roll 20 to be removed is fixed while simultaneously being centered. For this purpose, the supports 18, 20 are at least partially frustoconical, as the conical outer surfaces 22, 24 illustrate.

[0027] The support 18 - like the support 20 - can be described as a centering cone.

[0028] In the exemplary embodiment, the support 20 is fixedly connected to section 16, and the support 18 is adjustably connected to section 14 along the section 14. For this purpose, section 14 has an external thread 26 which interacts with an internal thread (not shown) of the support 18.

[0029] Furthermore, a handle 30, 32 extends from sections 14, 16 via a joint arrangement 26, 28, and is pivotable about an axis 34 or 36, respectively, which runs perpendicular to the longitudinal axis 38 of the cylindrical element 12 and is preferably directly intersected by it. Naturally, the invention also includes the possibility that the axis of rotation 34, 36 is slightly offset from the longitudinal axis 38, as shown in the drawing.

[0030] The joint arrangement 26, 28 consists of a section 40, 42 connected to the section 14 or 16, and the section 44, 46 having the handle 30, 32. Furthermore, the handle 30, 32 can be rotatable about its longitudinal axis.

[0031] Furthermore, at least in the end area of ​​the handle 30, 32 a magnet 48, 50 should be embedded in order to attach the device, for example, to a rack, a pallet truck, a forklift, etc., so that it can be avoided lying on the floor.

[0032] The pivotability of the handles 30, 32 about the axis 34, 36 is illustrated by the dashed line in the figure.

[0033] To peel off a film, a film roll is pushed onto the cylindrical base body 12, which consists of sections 14, 16, after removing one of the joint arrangements 26, 28 and the adjacent centering cone 18 or 20, in order to then connect the previously removed joint arrangement with the centering cone to the device 10.

[0034] Before sliding the roller onto the frame, sections 14 and 16 are adjusted to the required width of the roller. This can be achieved by a snap-fit ​​connection between sections 14 and 16 or by screwing them together.

[0035] In the exemplary embodiment, the centering cone 18 is then adjusted along the thread 26 in the direction of the roller to such an extent that not only is the desired centering of the roller achieved, but pressure is also exerted on it, so that the necessary tension is present when the film is pulled off and thus the desired stretch of the film can be achieved when wrapping the product. In other words, the stretch value can be adjusted by means of the centering cone 18.

[0036] Because the handles 30, 32 are pivotably arranged in the immediate end region of the cylindrical element 12 that receives the roll, the tilt angle of the device 10 can be optimally adjusted to peel off the stretch film and wrap goods. It is easy to use for both right- and left-handed users.

[0037] A simple 180° rotation around an axis perpendicular to the longitudinal axis 38 is possible without repositioning the hands.

[0038] The device 10 can be made of metal, plastic, in particular fiber-reinforced plastic, carbon material or a composite.

[0039] Plastic or carbon offers the advantage of a significant weight reduction compared to known stretch wrappers. While prior art hand stretch wrappers weigh around 2 kg, the device 10 according to the invention can weigh between 0.7 kg and 0.8 kg.

[0040] A further advantage of the stretch film dispenser 10 according to the invention is that the roll to be dispensed can be coreless, since centering is achieved by means of the centering cones 18, 20, i.e., the supports. The centering cones 18, 20 also offer the possibility of accommodating rolls of different diameters.

[0041] Due to the telescoping of sections 14 and 16, the device 10 can be used for film rolls of different widths.

[0042] The axial adjustability of the centering cone 18 offers the possibility of easy adjustment of the tension of the film to be peeled off and thus its stretching when wrapping goods.

Claims

[1] Device (10) for peeling a film from a roll, comprising a cylindrical element (12) receiving the roll, the ends of which are connected to or have handles (30, 32), a device (18) for adjusting the tension of the film to be peeled, and supports (18, 20) for the roll in its end regions, wherein the cylindrical element (12) has a first section (14) and a second section (16) axially adjustable to this, and at least one of the supports (18) has a conical geometry, at least partially, for interacting with the roll, characterized by , that the support (18) which at least partially has the conical geometry is adjustable along the longitudinal axis (38) of the cylindrical element (12) and to the section (14) from which the support originates. [2] Device according to claim 1, characterized by, that at least one of the sections (14) has an external thread (26) into which an internal thread of the support (18) having the conical geometry engages. [3] Device according to claim 1 or 2, characterized by that the sections (14, 16) are either detented or infinitely adjustable axially relative to each other. [4] Device according to at least one of the preceding claims, characterized by , that by means of the support (18) which at least partially has the conical geometry a roller can be fixed between the supports (18, 20) and the tension of the film to be peeled off can be adjusted. [5] Device for peeling a film from a roll which surrounds a cylindrical element (10) between supports (18, 20), preferably according to at least one of the preceding claims, characterized by, that the cylindrical element is connected in its free end regions to a handle (30, 32) via a pivot joint (26, 28), with each axis of rotation being perpendicular to the longitudinal axis (38) of the cylindrical element (12). [6] Device according to at least claim 5, characterized by , that a first joint section (40, 42) of the joint (26, 28) is connected to the cylindrical element (12), preferably extending along its length, and that a second joint section (44, 46) transitions into the handle (30, 32) or is a handle. [7] Device according to at least claim 5 or 6, characterized by , that the longitudinal axis (38) of the cylindrical element (12) intersects the axis of rotation (34, 36) directly or almost directly. [8] Device according to at least one of the preceding claims, characterized by , that one of the supports (20) is firmly connected to the cylindrical element (10). [9] Device according to at least one of the preceding claims, characterized by , that the handle, like the handle (30, 32), is rotatable about its longitudinal axis. [10] Device according to at least one of the preceding claims, characterized by , that the handle, like the grip (30, 32), has a magnet. [11] Device according to at least one of the preceding claims, characterized by , that a coreless roller is fixed between the supports (18, 20). [12] Device according to at least one of the preceding claims, characterized by that the device (10) or parts thereof, in particular the tubular element (12), consists of or contains at least one material from the group consisting of metal, such as aluminium, plastic, such as glass or carbon fiber reinforced plastic, carbon, composite.

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