Press ring, press collar and pressing tool with adjustment element

Abstract

The invention relates to a press ring, to a press collar, to a pressing tool, to a pressing device, which has an electric drive and a pressing tool according to the invention, to a system, which has a press ring according to the invention or a press collar according to the invention and a pressing device according to the invention, for pressing a press fitting. The press ring for pressing a press fitting has at least two segments (11, 12), which are movably interconnected by means of at least one connecting element, the segments (11, 12) being movable from an open position into a closed position, and the press ring has at least one adjustment element (14), the adjustment element (14) being designed to adjust the at least two segments (11, 12) into any position between the open position and the closed position.

Description

[0001] Pressrinq, press sling and pressing tool with adjustment element

[0002] The present invention relates to a press ring, a press loop, a press tool, a press device with an electric drive and a press tool according to the invention and a system with a press ring according to the invention or a press loop according to the invention and a press device according to the invention for pressing a press fitting.

[0003] When pressing press fittings, particularly for connecting tubular components using cold forming, it is known to use a press ring. The press ring comprises at least two segments that are connected to each other in a hinged manner and each of which has receiving elements for connection to a pressing tool. The press ring is connected to a pressing device by means of a pressing tool, which in turn has pressing jaws with connecting elements for connection to the receiving elements of the press ring. This allows a mechanical pressing force to be applied from the pressing device to the press ring to press the press fitting.In particular, this is an electro-hydraulic pressing device by which the pressing jaws of the pressing tool are moved towards each other, whereby the movement of the pressing jaws is transferred to the pressing ring in order to close the pressing ring, whereby a reduction of an inner radius of the pressing ring occurs, by which the press fitting lying on the inner radius of the pressing ring is pressed.

[0004] To press the press fitting, however, the press ring, press collar, and / or pressing tool must first be placed around the press fitting and precisely positioned at the point to be pressed. To do this, the press ring, press collar, and / or pressing tool must be moved from an initial position to a corresponding open position by applying force and held until the press ring or press collar is positioned at the desired location on the press fitting for pressing.

[0005] Known press rings or press loops, consisting of at least two press ring segments, are typically automatically moved from the open to the closed position by at least one spring element, in particular a leg spring.

[0006] However, a problem with conventional press rings or press slings is that adjusting and holding the press ring in the desired position is only possible by applying a force counteracting the spring force of the spring element. This makes it difficult to operate the press ring and / or precisely position the press ring at the point of the press fitting to be pressed. In particular, both hands are required by the user, making it impossible, for example, to hold the press fitting. Even in inaccessible locations, it is sometimes not possible to hold the press ring in the open position with both hands until it is wrapped around the press fitting.

[0007] The object of the present invention is to provide a pressing ring, a pressing loop and a pressing tool which solve the above-mentioned problems and thus facilitate and improve the operability and increase the precision of the pressing process.

[0008] The object is achieved by a press ring according to claim 1, a press loop according to claim 2, a press tool according to claim 10, a press device according to claim 17 with an electric drive and a press tool according to the invention and a system according to claim 18 with a press ring according to the invention or a press loop according to the invention with a drive.

[0009] A first aspect of the present invention relates to a press ring for pressing a press fitting. The press ring has at least two segments that are movably connected to one another via at least one connecting element, wherein the segments can be moved from an open position to a closed position. In particular, the connecting element defines an axis of rotation for the movement of the two segments relative to one another. Furthermore, the press ring has at least one adjusting element, wherein the adjusting element is designed to adjust the at least two segments to any position between the open position and the closed position. As a result, the segments of the press ring can be adjusted to any position and, in particular, can be positioned and held in this position without the application of force.In this position, the press ring can then be placed around a press fitting without requiring additional force to hold the segments in the desired position. This allows for easier and more precise positioning of the press ring on the press fitting, simplifying its operation and improving the precision of the pressing process. Furthermore, the press ring can still be securely applied even in hard-to-reach areas.

[0010] A second aspect of the present invention relates to a press loop for pressing a press fitting. The press loop has at least three or more segments, wherein the first segment is movably connected to the second segment via at least one first connecting element and can be moved from an open position to a closed position. Furthermore, the third segment is movably connected to the second segment via at least one second connecting element in order to be moved from an open position to a closed position. In particular, the connecting elements each define an axis of rotation for the movement of the adjacent segments relative to one another.Furthermore, the press collar has at least one adjusting element, wherein the adjusting element is designed to adjust the first segment or the third segment relative to the second segment into any position between the open position and the closed position. This allows the segments of the press collar to be adjusted into any position and, in particular, to be held in this position without any force. In this position, the press collar can then be applied around a press fitting without having to apply additional force to hold the segments in the desired position. This enables easier and more precise positioning of the press collar and the press fitting, simplifying the operation of the press collar and improving the precision of the pressing process. Furthermore, the press collar can still be attached safely even in hard-to-reach areas.

[0011] The press sling preferably has at least two adjustment elements. In particular, the at least two adjustment elements can be of the same or different design. This makes it possible to equip the press sling with more than one type of adjustment element, further increasing the adaptability of the press sling to different applications and / or requirements.

[0012] Preferably, the press loop has more than three segments, with an adjustment element arranged on each connecting element between every two segments. The adjustment elements can be of the same or different design.

[0013] Preferably, the adjusting element according to the first or second aspect of the present invention is designed to generate an axial force along the connecting element, wherein the axial force presses an axial surface of the first segment onto an axial surface of the second segment in order to hold the two segments in any desired position through the friction of the first axial surface with the second axial surface without the user having to apply any force. In this case, in particular, a plurality of axial forces can act on a plurality of, in particular mutually different, axial surfaces of the first or second segment in order to hold the respective axial surfaces of the first segment with those of the second segment in any desired position through friction. In this case, the friction is adapted ordimensioned in such a way that a frictional or force-lock connection is created between the adjusting element and the two segments, holding the two segments in any position between an open position and a closed position. The axial force acting along the connecting element therefore prevents mutual displacement of the two segments as long as the static friction force acting between the adjusting element and the axial surfaces of the first and / or second segment is greater than the closing force applied, in particular by the user. This enables particularly simple, in particular one-handed and flexible adjustment as well as stable holding of the press ring or press sling in any position between an open and closed position.

[0014] Preferably, the adjusting element according to the first or second aspect of the present invention is arranged between one of the two segments and one end of the connecting element. In particular, the adjusting element is in direct, in particular axial, contact with only one of the two segments. This leaves the area between the two segments free, allowing the segments to be arranged with the smallest possible distance from one another in the axial direction, or the remaining free area can be used to accommodate additional components if required. In particular, this also allows the adjusting element to be replaced without dismantling the segments of the press ring or the press collar.

[0015] Preferably, the adjusting element according to the first or second aspect of the present invention is arranged between the two segments. In particular, the adjusting element is in direct, in particular axial, contact with both segments. As a result, the adjusting element is securely arranged between the two segments of the press ring or press loop without further fixing or adjustment components. Preferably, the adjusting element according to the first or second aspect of the present invention is a spring element, in particular a disc spring, a compression spring, a wave spring, a flat spring, and in particular a disc-shaped flat spring, an O-ring, or an elastomer. The adjusting element can thus be provided in a simple and cost-effective manner.

[0016] Preferably, according to the first or second aspect of the present invention, the adjusting element at least partially surrounds the respective connecting element.

[0017] Preferably, the adjustment element according to the first or second aspect of the present invention is a screw element, wherein the screw element is detachably connected to the connecting element and is arranged in particular at one end of the connecting element. In this case, the screw element is arranged in particular on an outer surface of one of the two segments. As a result, the screw element serves simultaneously as an adjustment element for holding the segments of the press ring or press loop in the desired position and as a fixing element for fixing the two segments detachably connected to the connecting element to the connecting element.

[0018] A third aspect of the present invention relates to a pressing tool for pressing a press fitting, in particular by means of a pressing ring. The pressing tool has two pressing jaws, wherein the first pressing jaw is arranged to be rotatable about a first axis of rotation and wherein the second pressing jaw is arranged to be rotatable about a second axis of rotation, wherein the axes of rotation are connected by a tab and wherein the pressing jaws can be moved towards one another for pressing from an open position to a closed position. Furthermore, the pressing tool has at least one adjusting element, wherein the adjusting element is designed to adjust the first pressing jaw and / or the second pressing jaw to any position between the open position and the closed position. Thus, one adjusting element can be provided for the first pressing jaw. Alternatively, one adjusting element can be provided for the second pressing jaw.Alternatively, an adjustment element is provided for both the first and second pressing jaws. The two adjustment elements can be identical or different. This simplifies the operation of the pressing tool and improves the precision of the pressing process.

[0019] Preferably, the first and / or the second axis of rotation is designed as a bolt.

[0020] Preferably, the adjusting element is designed to generate an axial force along the respective axis of rotation, wherein the axial force presses an axial surface of the pressing jaw onto an axial surface of the tab, wherein the pressing jaw is held in any desired position by the friction between the first axial surface and the second axial surface. In particular, a plurality of axial forces can act on a plurality of, in particular different, axial surfaces of the pressing jaw in order to hold the respective axial surfaces with those of the tab in any desired position by friction. The friction is adapted or dimensioned such that a frictional or force-lock connection is created between the adjusting element and the first or second pressing jaw in order to hold the pressing jaw in any desired position between an open position and a closed position.The axial force acting along the respective axis of rotation prevents unintentional opening and / or closing of the pressing jaw, as long as the static friction force acting between the adjusting element and the axial surfaces of the pressing jaw is greater than the closing force applied, in particular by the user. This enables simple, particularly one-handed and flexible adjustment as well as stable holding of the pressing tool in any position between an open and closed position. Preferably, the adjusting element is arranged between one of the two pressing jaws and the tab. In particular, the adjusting element is in direct contact with both the tab and one of the two pressing jaws. As a result, the adjusting element is securely arranged between the tab and a pressing jaw of the pressing tool without the need for additional fixing or adjustment components.

[0021] Preferably, the adjustment element is arranged between one end of the respective rotational axis and the bracket. In particular, the adjustment element is in direct contact only with the bracket and, in particular, with the rotational axis, which is designed as a bolt. This allows for easy replacement of the adjustment element.

[0022] The adjusting element is preferably a spring element, in particular a disc spring, a compression spring, a wave spring, a flat spring, and in particular a disc-shaped flat spring, an O-ring, or an elastomer. This allows the adjusting element to be provided in a simple and cost-effective manner.

[0023] Preferably, the adjusting element at least partially surrounds the respective axis of rotation.

[0024] The adjusting element is preferably a screw element, wherein the screw element is detachably connected to the respective axis of rotation and is arranged in particular at one end of the axis of rotation, in particular on an outer surface of one of the two pressing jaws. As a result, the screw element serves simultaneously as an adjusting element for holding the pressing jaws of the pressing tool in the desired position and as a fixing element for fixing the two pressing jaws detachably connected to the connecting element to the connecting element. A fourth aspect of the present invention relates to a pressing device with an electric drive and a pressing tool according to the third aspect of the present invention. The pressing tool is connected to the drive for moving the pressing jaws of the pressing tool. This creates a pressing device that enables the pressing jaws to be held continuously in any position.

[0025] A fifth aspect of the present invention relates to a system comprising a pressing ring or pressing sling according to the first or second aspect, and in particular a pressing device according to the fourth aspect of the present invention with a drive. This creates a system that enables continuous adjustment to any desired position and retention in the continuously adjustable position.

[0026] The present invention will be explained in more detail below using preferred embodiments with reference to the accompanying drawings.

[0027] They show:

[0028] Figure 1 shows a press ring according to the invention in a plan view,

[0029] Figure 1A shows the press ring according to the invention in a closed position in a front view,

[0030] Figure 1B shows the press ring according to the invention in several positions between the open position and the closed position in a front view,

[0031] Figure 1C shows the press ring according to the invention in the open position with a press fitting in a front view, Figure ID shows an embodiment of the press ring according to the invention in a plan view,

[0032] Figure IE shows a further embodiment of the inventive

[0033] Press ring in a top view,

[0034] Figure 1F shows a further embodiment of the inventive

[0035] Press ring in a top view,

[0036] Figure IG shows a further embodiment of the inventive

[0037] Press ring in a top view,

[0038] Figure 1H shows a further embodiment of the inventive

[0039] Press ring in a top view,

[0040] Figure II shows a further embodiment of the inventive

[0041] Press ring in a top view,

[0042] Figure 2 shows a press loop according to the invention,

[0043] Figure 2A is a front view of the press loop of Figure 2,

[0044] Figure 2B is a side view of the press loop from Figure 2,

[0045] Figure 3 shows a pressing tool according to the invention with a pressing ring in a front view.

[0046] Figure 1 shows a press ring 10 according to the invention for pressing a press fitting using a suitable pressing tool. The press ring 10 has two segments 11, 12, which can be moved from an open position to a closed position and are connected to one another by means of a connecting element 13. Furthermore, the press ring 10 has an adjusting element 14 between the two segments 11, 12. As can be seen in Figure 1, the adjusting element 14 is arranged between the two segments 11, 12 and is in direct contact with the two segments 11, 12 in the axial direction. By means of the adjusting element 14, the at least two segments 11, 12 can be adjusted to any position between an open position and a closed position and held there without force, without the user having to hold the press ring 10 in an open position.

[0047] Figure 1A shows the press ring 10 in the closed position. The two segments 11, 12 form an inner opening suitable for receiving a press fitting. As can be seen in Figure 1A, the connecting element 13 comprises, in particular, a substantially cylindrical fastening element 13a, designed to be received in any through-opening of the two segments 11, 12, and an annular securing element 13b.

[0048] As shown schematically in Figure 1B using some example positions, the press ring 10 can be adjusted to any position between the open and closed positions using the adjusting element 14. In particular, the adjusting element 14 is designed to generate an axial force along the connecting element 13, wherein the axial force presses an axial surface of the first segment 11 against an axial surface of the second segment 12 in order to hold the two segments 11, 12 in any position through the friction of the first axial surface with the second axial surface. This is indicated in Figure 1D by the two opposing axial arrows. The friction is adjusted or dimensioned such that a frictional or force-lock connection is created between the adjusting element 14 and the two segments 11, 12, for holding the two segments 11, 12 in any position between an open position and a closed position.The frictional force thus counteracts the closing force and thereby enables, in particular, one-handed operation of the press ring 10. As shown in Figure 1C, the appropriately adjusted press ring 10 can then be placed around a press fitting 40 without having to apply additional force to hold the segments 11, 12 in the desired position. In particular, the friction creates a braking effect and prevents the segments 11, 12 from snapping back into the closed position. This allows for simple and precise positioning of the press ring 10 on the press fitting 40. This improves operability, in particular enabling one-handed operation of the press ring 10 and improving the precision of the pressing process, since the press ring 10 is held in the adjusted position by the adjusting element 14 until the press ring 10 has been positioned at a point on the press ring to be pressed.Here, the press ring 10 can be closed by the user applying a closing force.

[0049] In the following, identical or similar components are marked with identical reference symbols.

[0050] Figure 1D shows an embodiment of the press ring 10 in which, as in Figure 1, the adjusting element 14 is arranged axially between the two segments 11, 12 and is in direct contact with the two segments 11, 12. The adjusting element 14 in Figure 1D is preferably designed as a single prestressed spring element. The prestressed spring element can, for example, be designed as an elastomer, a compression spring, a wave spring, or, in particular, as a disc-shaped flat spring. The spring element is preferably made of metal or a compressible or elastic material, for example, plastic or another elastomer. As schematically indicated by the two arrows in Figure 1D, the spring element 14 exerts an axial force along the connecting element 13 on the inner surface of the first segment 11 and an axial force pointing in the opposite direction on the inner surface of the second segment 12.The friction of the adjusting element with the inner surface of the first segment 11 and with the inner surface of the second segment 12 creates a frictional connection which is designed to hold the two segments 11, 12 in any desired position without force.

[0051] Figure 1E shows a further embodiment of the press ring 10, in which the adjusting element 14 is arranged axially between the two segments 11, 12 and is in direct contact with the two segments 11, 12. The adjusting element 14 in Figure 1E is preferably designed as a disc spring. The disc spring is preferably made of a compressible or elastic material, for example plastic or metal. The disc spring 14 generates an axial force along the connecting element 13, wherein the axial force presses the axial surface of the first segment 11 onto the axial surface of the second segment 12 in order to hold the two segments 11, 12 in a desired position through the friction of the first axial surface with the second axial surface. The use of the disc spring offers the advantage that a high force can be achieved with a very short spring travel.

[0052] Figure 1F shows an embodiment of the press ring 10 in which the adjusting element 14 is arranged axially between the first segment 11 and one end of the connecting element 13 and is in direct contact only with the first segment 11 in the axial direction. The adjusting element 14 in Figure 1F is releasably fixed to the press ring 10 by a retaining ring 13b.

[0053] The adjusting element 14 can be designed as a prestressed spring element, for example as a disc spring, an elastomer, a compression spring, a wave spring or, in particular, as a disc-shaped flat spring. The prestressed spring element is preferably made of metal or a compressible or elastic material, for example plastic or another elastomer. In the embodiment shown in Figure 1F, the prestressed spring element 14 exerts an axial force on the outer surface of the first segment 11 and an axial force along the connecting element 13, which can, in particular, be designed as a bolt, on the second segment 12 of the pressing ring 10. Here, too, friction acts which is dimensioned such that the two segments 11, 12 of the pressing ring are held by frictional engagement in any position between the open and closed positions of the pressing ring 10.

[0054] Figure 1G shows a further embodiment of the press ring 10, in which the adjusting element 14 is arranged axially between the first segment 11 and one end of the connecting element 13 and is in direct contact only with the first segment 11 in the axial direction. The adjusting element 14 in Figure 1G is designed as a screw element, in particular as a screw nut, which is screwed onto an internal thread of the connecting element 13 designed as a bolt. In the embodiment shown in Figure 1G, an axial force acts on the outer surface of the first segment 11 via the nut 14 and an axial force along the bolt 13 acts on the second segment 12 of the press ring 10. The two segments 11, 12 of the press ring are thus held by friction in any position between the open and closed positions of the press ring 10.The advantage of using the nut as the adjusting element 14 is that the locking ring 13b as an additional fixing means can be dispensed with.

[0055] Figure 1H shows a further embodiment of the press ring 10, in which the adjusting element 14 is designed as a combination of a prestressed spring element, which is arranged axially between the first segment 11 and one end of the connecting element 13, and a nut, which is also arranged axially at the same end of the connecting element 13, in direct contact with the spring element. The prestressed spring element can be designed, for example, as a disc spring, an elastomer, a compression spring, a wave spring, or as a flat spring, in particular a disc-shaped flat spring. The prestressed spring element is preferably made of metal or a compressible or elastic material, for example, plastic or another elastomer. The nut and the prestressed spring element 14 exert an axial force on the outer surface of the first segment 11 and an axial force along the bolt 13 on the second segment 12 of the press ring 10.In this embodiment, the two segments 11, 12 of the press ring are also held frictionally in any position between the open and closed positions of the press ring 10.

[0056] Figure 2 shows a further embodiment of the pressing ring 10. The adjusting element 14 is designed as an O-ring, which surrounds the connecting element 13 and is arranged axially between the two segments 11, 12. The O-ring is therefore in direct contact with both segments 11, 12 of the pressing ring 10 in the axial direction. Furthermore, the O-ring 14 preferably has a preload. The O-ring is preferably made of a compressible or elastic material, for example plastic or rubber. Due to the axial force exerted by the O-ring along the connecting element 13 on the inner surfaces of the first segment 11 and on the inner surface of the second segment 12, a frictional connection is created by the friction of the O-ring with the respective inner surfaces of the first segment 11 and the second segment 12, which frictional connection is designed to hold the two segments 11, 12 in any position between the open position and the closed position.

[0057] Figures 2 and 2A show an embodiment of the press sling 20 according to the invention. The press sling has three segments 21, 22, 23. The first segment 21 is movably connected to the second segment 22 via a first connecting element 24 and can be moved from an open position to a closed position. The third segment 23 is movably connected to the second segment 22 via a second connecting element 25 and can be moved from an open position to a closed position. In the embodiment of the press sling 20 shown in Figure 2, the connecting elements 24, 25 each have a cylindrical fastening element 24a and, in particular, two annular securing elements 24b arranged at opposite ends of the fastening element 24a.The second connecting element 25 also has a cylindrical fastening element 25a and, in particular, two annular securing elements 25b arranged on opposite ends of the fastening element 25a. Preferably, the connecting elements 24, 25 are designed as bolts, and the fastening elements 24b, 25b are designed as retaining rings.

[0058] Furthermore, the press loop 20 has an adjustment element 26 designed to adjust the third segment 23 to any position between the open and closed positions. The adjustment element 26 is arranged between the second and third segments 22, 23, in direct contact only with the second and third segments 22, 23.

[0059] In the embodiment shown in Figures 2 and 2A, the adjusting element 26 is designed as a preloaded spring element, in particular as a disc spring. Alternatively, the adjusting element 26 can be designed, for example, as a compression spring, a wave spring, a flat spring, in particular a disc-shaped flat spring, an O-ring, or an elastomer spring or an elastomer ring.

[0060] Figure 2B shows a side view of the embodiment of the press loop 20 shown in Figures 2, 2A with the disc spring 26 between the second and third segments 22, 23. The disc spring 26 is designed to generate an axial force along the connecting element 25, wherein the axial force presses an axial surface, in particular a first inner surface of the second segment 22, onto an axial surface, in particular a first inner surface of the third segment 23, in order to hold the third segment 23 in any position between the open and the closed position by frictional engagement.

[0061] Alternatively, in another embodiment, the adjusting element 26 can be arranged between the second segment 22 and one end of the connecting element 25 and thus be in direct axial contact only with the second segment 22 and the connecting element 25. Furthermore, according to another embodiment, the press sling can have at least one further adjusting element, which can be arranged either between the first and second segments 21, 22 and / or between the first segment 21 and one end of the first connecting element 24. Furthermore, the second adjusting element can be designed either the same as the first adjusting element 26 or differently.

[0062] Figure 3 shows an embodiment of a pressing tool 30 according to the invention with a pressing ring 10. The pressing tool 30 has two pressing jaws 31, 32. The pressing tool 30 further has a pair of connecting elements 31a, 32a, which are designed with regard to their shape, dimensions, and position such that they are suitable for connection to a pair of receiving elements 11a, 12a of the pressing ring 10. In Figure 3, the pressing ring 10 and the pressing tool 30 are shown in a closed position, engaged with one another.

[0063] The first pressing jaw 31 is arranged rotatably about a first axis of rotation D1, and the second pressing jaw 32 is arranged rotatably about a second axis of rotation D2 and are connected to one another by a link 37. The axes of rotation D1, D2 are designed, in particular, as bolts. The pressing jaws 31, 32 can be moved toward one another for pressing from an open position to a closed position. Furthermore, the pressing tool 30 has at least one adjusting element, wherein the adjusting element is designed to adjust the first pressing jaw 31 and / or the second pressing jaw 32 to any position between the open position and the closed position.

[0064] In particular, the adjusting element is designed to generate an axial force along the respective axis of rotation, wherein the axial force presses an axial surface of the pressing jaw onto an axial surface of the tab 37, wherein the friction between the first axial surface and the second axial surface creates a frictional connection between the pressing jaws 31, 32 and the pressing jaws 31, 32 being held in any desired position. The adjusting element can be arranged either between one of the two pressing jaws 31, 32 and the tab 37 or, alternatively, between one end of the respective axis of rotation D1, D2 and the tab 37. In the first case, the adjusting element is therefore in direct contact with the tab 37 and the respective pressing jaw 31, 32. In the second case, the adjusting element is only in direct contact with the tab 37.In both cases, the frictional engagement ensures that the pressing jaws 31, 32 can not only be adjusted to any position between the open and closed positions, but are also held in this position.

[0065] According to one embodiment of the present invention, the adjusting element can be designed as a spring element and in particular as a disc spring, a compression spring, a wave spring, a particularly disc-shaped flat spring, as an O-ring or an elastomer, in particular as an elastomer ring.

[0066] According to a further embodiment, the adjusting element can be designed as a screw element, wherein the screw element is detachably connected to the respective rotational axis Dl, D2, in particular at one end of the rotational axis Dl, D2.

[0067] All embodiments of the pressing tool 30 also have the features of the adjustment element of the above-described pressing ring 10 and / or the pressing loop 20. In particular, the embodiments of the pressing ring 10, the pressing loop 20, and the pressing tool 30 can be freely combined with one another.

Claims

Claims Press ring for pressing a press fitting, with at least two segments (11, 12) movably connected to each other via at least one connecting element (13), wherein the segments (11, 12) are movable from an open position to a closed position, and at least one adjusting element (14), wherein the adjusting element (14) is designed to adjust the at least two segments (11, 12) to any position between the open position and the closed position.Press loop for pressing a press fitting, with at least three segments (21, 22, 23), wherein the first segment (21) is movably connected to the second segment (22) via at least one first connecting element (24) from an open position to a closed position, and wherein the third segment (23) is movably connected to the second segment (22) via at least one second connecting element (25) (from an open position to a closed position), and at least one adjusting element (26), wherein the adjusting element (26) is designed to adjust the first segment (21) or the third segment (23) to any position between the open position and the closed position. Press loop according to claim 2, characterized in that the press loop has at least two adjusting elements (26). Press ring or press loop according to any of the preceding claims, characterized in that the adjusting element (14, 26) is configured to generate an axial force along the connecting element (13, 24, 25), wherein the axial force presses an axial surface of the first segment (11, 21, 23) onto an axial surface of the second segment (12, 22) in order to hold the two segments (11, 12, 21, 23) in the desired position by means of the friction between the first axial surface and the second axial surface. Press ring or press loop according to any of the preceding claims, characterized in that the adjusting element (14) is arranged between one of the two segments (11, 12, 21, 22, 23) and an end of the connecting element (13, 24, 25).A press ring or press loop according to any one of the preceding claims, characterized in that the adjusting element (14, 26) is arranged between the two segments (11, 12, 21, 22, 23). A press ring or press loop according to any one of the preceding claims, characterized in that the adjusting element (14, 26) is a spring element and, in particular, a disc spring, a compression spring, a wave spring, a flat spring, an O-ring, or an elastomer. A press ring or press loop according to any one of the preceding claims, characterized in that the adjusting element (14, 26) at least partially surrounds the respective connecting element (13, 24, 25). Press ring or press loop according to one of the preceding claims, characterized in that the adjusting element (14, 26) is a screw element, wherein the screw element is detachably connected to the connecting element (13) and is in particular arranged at one end of the connecting element (13).Pressing tool for pressing a press fitting, in particular by means of a press ring, with two press jaws (31, 32), wherein the first press jaw (31) is rotatably arranged about a first axis of rotation (D1) and wherein the second press jaw (32) is rotatably arranged about a second axis of rotation (D2), wherein the axes of rotation are connected by a tab (37) and wherein the press jaws (31, 32) are movable towards each other for pressing from an open position to a closed position, and at least one adjusting element (33, 34), wherein the adjusting element (33, 34) is designed for adjusting the first press jaw (31) and / or the second press jaw (32) to any position between the open position and the closed position.Pressing tool according to claim 10, characterized in that the adjusting element (33, 34) is designed to generate an axial force along the respective axis of rotation, wherein the axial force presses an axial surface of the press jaw onto an axial surface of the tab (37), wherein the press jaw (31, 32) is held in the desired position by the friction of the first axial surface with the second axial surface. A pressing tool according to any one of claims 10 to 11, characterized in that the adjusting element (33, 34) is arranged between one of the two pressing jaws (31, 32) and the tab (37). A pressing tool according to any one of claims 10 to 12, characterized in that the adjusting element (33, 34) is arranged between one end of the respective axis of rotation (D1, D2) and the tab (37). A pressing tool according to any one of claims 10 to 13, characterized in that the adjusting element (33, 34) is a spring element and in particular a disc spring, a compression spring, a wave spring, a flat spring, in particular a disc-shaped flat spring, an O-ring, or an elastomer. A pressing tool according to any one of claims 10 to 14, characterized in that the adjusting element (33, 34) at least partially surrounds the respective axis of rotation (D1, D2).Pressing tool according to any one of claims 10 to 15, characterized in that the adjusting element (33, 34) is a screw element, wherein the screw element is detachably connected to the respective axis of rotation (D1, D2) and in particular at one end of the axis of rotation (D1, D2). Pressing device with an electric drive and a pressing tool according to any one of claims 10 to 16, characterized in that the pressing tool (30) is connected to the drive for moving the pressing jaws (31, 32) of the pressing tool (30). System comprising a press ring or press loop according to one of claims 1 to 9 and a press device, in particular according to claim 17, comprising a drive.

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