Pressure ring, pressure bring and pressure tool with adjusting

Abstract

The invention relates to a pressure ring, a pressure ferrule, a pressing tool, a pressing device having an electric drive and a pressing tool according to the invention, and a system having a pressure ring according to the invention or a pressure ferrule according to the invention and a pressing device according to the invention. The invention relates to a pressure ring for pressing a press fitting, comprising 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, comprising at least one adjusting element (14), the adjusting element (14) is designed to adjust the at least two segments (11, 12) to any position between an open position and a closed position.

Description

Technical Field

[0001] The invention relates to a pressure ring, a pressure collar, a pressing tool for pressing a pressing fitting, a pressing device having an electric drive and a pressing tool according to the invention, and a system having a pressure ring according to the invention or a pressure collar according to the invention and a pressing device according to the invention. Background Art

[0002] When pressing fittings are pressed, in particular for the purpose of connecting tubular components by means of cold forming, it is known to use a pressure ring. The pressure ring has at least two segments connected to one another in a hinge-like manner, each segment in turn having a receiving element for connecting to a pressing tool. The pressure ring is connected to a pressing device by means of a pressing tool, which in turn has pressing jaws with connecting elements for connecting to the receiving elements of the pressure ring. This allows the pressing device to apply a mechanical pressing force to the pressure ring in order to press the pressing fitting. In particular, this is an electrohydraulic pressing device, by means of which the pressing jaws of the pressing tool are moved towards each other, the movement of the pressing jaws being transmitted to the pressure ring in order to close the pressure ring, whereby a reduction of the inner radius of the pressure ring occurs, by which the pressing fitting adjacent to the inner radius of the pressure ring is pressed.

[0003] However, in order to compress the press fitting, the pressure ring, pressure ferrule and / or pressing tool must first be placed around the press fitting and accurately positioned at the point to be pressed. For this purpose, the pressure ring, pressure ferrule and / or pressing tool in the prior art must be moved from an initial position to a corresponding open position by applying a force and must be held until the pressure ring / pressure ferrule is positioned at the desired point on the press fitting for pressing.

[0004] Known pressure rings or pressure collars consist of at least two pressure ring segments and are usually automatically moved from an open position into a closed position by at least one spring element, in particular a torsion spring.

[0005] However, a problem with known pressure rings or pressure collars is that the pressure ring can only be set and held in the desired position by exerting a force opposing the spring force of the spring element, so that it is difficult to operate the pressure ring and / or to position the pressure ring precisely at the point of the press fitting to be pressed. In particular, both hands of the user are required, so that, for example, it is not possible to hold the press fitting. Even in inaccessible places, it is sometimes not possible to hold the pressure ring in the open position with both hands until it is placed around the press fitting. Summary of the invention

[0006] An object of the present invention is to provide a pressure ring, a pressure collar and a pressing tool which solve the above-mentioned problems and thus facilitate and improve the operability and enhance the accuracy of the pressing operation.

[0007] This problem is solved by a pressure ring according to claim 1, a pressure collar according to claim 2, a pressing tool according to claim 10, a pressing device with an electric drive and a pressing tool according to the invention according to claim 17 and a system with a pressure ring according to the invention or a pressure collar according to the invention and a drive according to claim 18.

[0008] A first aspect of the present invention relates to a pressure ring for extruding a press fitting. In this case, the pressure ring has at least two segments movably connected to each other by at least one connecting element, and these segments can be moved from an open position to a closed position. In particular, the connecting element defines a rotation axis for the two segments to move relative to each other. In addition, the pressure ring has at least one adjustment element, which is designed to adjust at least two segments to any position between the open position and the closed position. This allows the segments of the pressure ring to be adjusted to any position, in particular, allows the segments of the pressure ring to be positioned and maintained in this position without force. In this position, the pressure ring can then be placed around the press fitting without having to apply additional force to keep the segments in the desired position. This allows the pressure ring to be positioned more easily and more accurately on the press fitting, which simplifies the operation of the pressure ring and improves the accuracy of the extrusion process. In addition, the pressure ring can be firmly attached even in difficult-to-access areas.

[0009] A second aspect of the present invention relates to a pressure collar for extruding a press fitting. The pressure collar 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. In addition, the third segment is movably connected to the second segment via at least one second connecting element so as to move from an open position to a closed position. In particular, the connecting element defines a rotation axis for adjacent segments to move relative to each other. In addition, the pressure collar has at least one adjustment element, which is designed to adjust the first segment or the third segment to any position between the open position and the closed position relative to the second segment. This allows the segments of the pressure collar to be adjusted to any position, in particular, allows the segments of the pressure collar to be kept in this position without force. In this position, the pressure collar can then be placed around the press fitting without having to apply additional force to keep the segments in the desired position. This allows the pressure collar to be positioned more easily and more accurately on the press fitting, which simplifies the operation of the pressure collar and improves the accuracy of the extrusion process. In addition, the pressure collar can be firmly attached even in inaccessible areas.

[0010] Preferably, the pressure collar has at least two adjusting elements. In particular, the at least two adjusting elements can have the same or different designs. This makes it possible to equip the pressure collar with more than one type of adjusting element, which further increases the adaptability of the pressure collar to different fields of application and / or requirements.

[0011] Preferably, the pressure collar has more than three segments, wherein an adjustment element is arranged on each connecting element between every two segments. The adjustment elements can have the same or different designs.

[0012] Preferably, the adjusting element according to the first or second aspect of the present invention is configured to generate an axial force along the connecting element, wherein the axial force presses the axial surface of the first segment onto the axial surface of the second segment, so as to keep the two segments in any position by friction between the first axial surface and the second axial surface, without any force applied by the user. In particular, multiple axial forces can act on multiple axial surfaces of the first or second segment, especially on axial surfaces different from each other, so as to keep the corresponding axial surface of the first segment and the corresponding axial surface of the second segment in a freely selectable position by friction. The friction is adjusted or sized so that a friction connection or non-rigid connection is generated between the adjusting element and the two segments for keeping the two segments in any position between the open position and the closed position. Therefore, as long as the static friction force acting between the adjusting element and the axial surface of the first segment and / or the second segment due to static friction is greater than the closing force applied in particular by the user, the axial force acting along the connecting element prevents the mutual displacement of the two segments. This realizes a particularly simple, especially one-handed and flexible adjustment, and a stable retention of the pressure ring or pressure collar in any position between the open position and the closed position.

[0013] Preferably, the adjusting element according to the first or second aspect of the invention is arranged between one of the two segments and one end of the connecting element. In particular, the adjusting element is in direct contact with only one of the two segments, in particular in axial contact. This leaves the area between the two segments free, thereby allowing the segments to be arranged as close as possible in the axial direction, or the free area can be used to accommodate other components if necessary. In particular, this also makes it possible to replace the adjusting element without disassembling the segments of the pressure ring or pressure collar.

[0014] Preferably, the adjusting element according to the first or second aspect of the invention is arranged between the two segments. In particular, the adjusting element is in direct contact with both segments, in particular axial contact. This means that the adjusting element is fixed between the two segments of the pressure ring or pressure collar without any additional fixing or adjusting components.

[0015] Preferably, the adjusting element according to the first or second aspect of the invention 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. This means that the adjusting element can be obtained in a simple and cost-effective manner.

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

[0017] Preferably, the adjustment element according to the first or second aspect of the invention is a screw element, wherein the screw element is detachably connected to the connecting element and is in particular arranged at one end of the connecting element. In particular, the screw element is arranged on the outer surface of one of the two segments. In this way, the screw element simultaneously serves as an adjustment element for keeping the segment of the pressure ring or pressure collar in a 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 invention relates to a pressing tool for pressing a fitting, in particular by means of a pressure ring. The pressing tool has two pressing jaws, wherein the first pressing jaw is rotatably arranged around a first rotation axis, and wherein the second pressing jaw is rotatably arranged around a second rotation axis, wherein the rotation axes are connected by a connecting plate, and wherein the pressing jaws can be moved from an open position toward each other to a closed position for pressing. In addition, the pressing tool has at least one adjusting element, which 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. This means that an adjusting element can be provided for the first pressing jaw. Alternatively, an adjusting element can be provided for the second pressing jaw. Alternatively, an adjusting element can be provided for both the first pressing jaw and the second pressing jaw. Here, the design of the two adjusting elements can be the same or different. This simplifies the operation of the pressing tool and improves the precision of the pressing process.

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

[0020] Preferably, the adjusting element is designed to generate an axial force along the corresponding rotation axis, whereby the axial force presses the axial surface of the pressing jaw onto the axial surface of the connecting plate, whereby the pressing jaw is held in the desired position by friction between the first axial surface and the second axial surface. In particular, multiple axial forces can act on multiple axial surfaces of the pressing jaw, in particular axial surfaces that are different from each other, so as to hold the corresponding axial surface with the corresponding axial surface of the connecting plate in any position by friction. The friction is adjusted or sized so that a friction connection or non-rigid connection is generated between the adjusting element and the first or second pressing jaw for holding the pressing jaw in any position between the open position and the closed position. Thus, the axial force acting along the corresponding rotation axis prevents the unintentional opening and / or closing of the pressing jaw as long as the static friction force acting between the adjusting element and the axial surface of the pressing jaw due to the static friction is greater than the closing force applied in particular by the user. This enables simple, in particular one-handed and flexible adjustment, as well as stable holding of the pressing tool in any position between the open position and the closed position.

[0021] Preferably, the adjusting element is arranged between one of the two pressing jaws and the connecting plate. In particular, the adjusting element is in direct contact with both the connecting plate and one of the two pressing jaws. Thus, the adjusting element is fixed between the connecting plate and the pressing jaws of the pressing tool without any additional fixing or adjusting components.

[0022] Preferably, the adjusting element is arranged between one end of the corresponding rotating shaft and the connecting plate. In particular, the adjusting element is in direct contact only with the connecting plate, and in particular with the rotating shaft in the form of a bolt. This makes it easy to replace the adjusting element.

[0023] Preferably, the adjusting element 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. This means that the adjusting element can be obtained in a simple and cost-effective manner.

[0024] Preferably, the adjustment element at least partially surrounds the respective axis of rotation.

[0025] Preferably, the adjustment element is a screw element, wherein the screw element is detachably connected to the corresponding rotation axis and is particularly arranged at one end of the rotation axis, particularly on the outer surface of one of the two pressing jaws. In this way, the screw element simultaneously serves as an adjustment element for keeping the pressing jaws of the pressing tool in a desired position and as a fixing element for fixing the two pressing jaws detachably connected to the connecting element to the connecting element.

[0026] A fourth aspect of the invention relates to a pressing device having an electric drive and a pressing tool according to the third aspect of the invention. The pressing tool is connected to the drive to move the pressing jaws of the pressing tool. This provides a pressing device that allows the pressing jaws to be held in any position in a stepless manner.

[0027] A fifth aspect of the invention relates to a system comprising a pressure ring or a pressure collar according to the first or second aspect and in particular a pressing device including a drive according to the fourth aspect of the invention. This provides a system that can be infinitely adjusted to any position and maintained in an infinitely adjustable position. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Hereinafter, the present invention is described in more detail by way of preferred embodiments with reference to the accompanying drawings.

[0029] In the figure:

[0030] FIG. 1 is a top view of a pressure ring according to the present invention,

[0031] FIG. 1A is a front view of a pressure ring in a closed position according to the present invention,

[0032] 1B is a front view of a pressure ring according to the present invention in multiple positions between an open position and a closed position,

[0033] FIG. 1C is a front view of a pressure ring and a press fitting according to the present invention in an open position,

[0034] FIG. 1D is a top view of an embodiment of a pressure ring according to the present invention,

[0035] FIG. 1E is a top view of another embodiment of a pressure ring according to the present invention,

[0036] FIG. 1F is a top view of another embodiment of a pressure ring according to the present invention,

[0037] FIG. 1G is a top view of another embodiment of a pressure ring according to the present invention,

[0038] FIG. 1H is a top view of another embodiment of a pressure ring according to the present invention,

[0039] FIG. 1I is a top view of another embodiment of a pressure ring according to the present invention,

[0040] FIG. 2 shows a pressure collar according to the present invention,

[0041] FIG. 2A is a front view of the pressure collar of FIG. 2 ,

[0042] FIG. 2B is a side view of the pressure collar of FIG. 2 ,

[0043] FIG. 3 is a front view of an extrusion tool with a pressure ring according to the present invention. DETAILED DESCRIPTION

[0044] FIG1 shows a pressure ring 10 for pressing a press fitting with a suitable pressing tool according to the present invention. The pressure ring 10 has two segments 11, 12, which can be moved from an open position to a closed position and are connected to each other by means of a connecting element 13. In addition, the pressure ring 10 has an adjustment element 14 between the two segments 11, 12. As can be seen in FIG1, the adjustment 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. The adjustment element 14 allows at least two segments 11, 12 to be moved to any position between the open position and the closed position and to be held there without force, without the user having to hold the pressure ring 10 in the open position.

[0045] FIG. 1A shows the pressure ring 10 in a closed position. The two segments 11, 12 form an internal opening suitable for receiving a press fitting. As can be seen from FIG. 1A, the connecting element 13 has in particular a substantially cylindrical fastening element 13a and an annular fixing element 13b, the fastening element 13a being designed to be received in any through hole of the two segments 11, 12.

[0046] As schematically shown in FIG. 1B using some example positions, the pressure ring 10 can be set to any position between the open position and the closed position using an adjustment element 14. In particular, the adjustment element 14 is designed to generate an axial force along the connecting element 13, wherein the axial force squeezes the axial surface of the first segment 11 onto the axial surface of the second segment 12 so that the two segments 11, 12 are maintained in the desired position by the friction of the first axial surface with the second axial surface. This is indicated by two opposite axial arrows in FIG. 1D. The friction is adjusted or sized so that a friction connection or non-rigid connection is generated between the adjustment element 14 and the two segments 11, 12 for maintaining the two segments 11, 12 in any position between the open position and the closed position. Therefore, the friction force counteracts the gravitational closing force, thereby in particular enabling one-handed operation of the pressure ring 10.

[0047] As shown in FIG. 1C , the appropriately adjusted pressure ring 10 can then be placed around the press fitting 40 without having to apply additional force to keep the segments 11 , 12 in the desired position. In particular, friction produces a braking effect and prevents the segments 11 , 12 from returning sharply to the closed position. This enables the pressure ring 10 to be positioned on the press fitting 40 simply and precisely. This therefore improves operability, in particular enables one-handed operation of the pressure ring 10 and increases the precision of the extrusion process, since the pressure ring 10 is held in the set position by the adjustment element 14 until the pressure ring 10 has been positioned at the point on the pressure ring to be extruded. Here, the pressure ring 10 can be closed by the user applying a closing force.

[0048] In the following, the same or similar components are identified by the same reference numerals.

[0049] FIG. 1D shows an embodiment of the pressure ring 10, wherein, as in FIG. 1 , the adjustment element 14 is axially arranged between the two segments 11, 12 and in direct contact with the two segments 11, 12. The adjustment element 14 in FIG. 1D is preferably designed as a single preloaded spring element. The pretensioning spring element can be designed, for example, as an elastomer, a compression spring, a wave spring or a flat spring, in particular a disc-shaped flat spring. Preferably, the spring element is made of metal or a compressible material or an elastic material, such as plastic or other elastomers. As schematically shown by the two arrows in FIG. 1D, the spring element 14 applies an axial force on the inner surface of the first segment 11 along the connecting element 13, and applies an axial force pointing to the opposite axial direction on the inner surface of the second segment 12. The friction between the adjustment element and the inner surface of the first segment 11 and the inner surface of the second segment 12 produces a friction connection, which is designed to keep the two segments 11, 12 in any position without force.

[0050] FIG. 1E shows another embodiment of the pressure ring 10, in which an adjustment element 14 is axially arranged between the two segments 11, 12 and in direct contact with the two segments 11, 12. The adjustment element 14 in FIG. 1E is preferably designed as a leaf spring. Preferably, the leaf spring is made of a compressible material or an elastic material, such as plastic or metal. The leaf 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 so that the two segments 11, 12 are kept in the desired position by the friction between the first axial surface and the second axial surface. The advantage of using a leaf spring is that a high force can be achieved with a very short spring travel.

[0051] Fig. 1F shows an embodiment of the pressure ring 10, wherein the adjustment element 14 is axially arranged between the first segment 11 and one end of the connecting element 13 and directly contacts the first segment 11 in the axial direction only. The adjustment element 14 in Fig. 1F is detachably fixed to the pressure ring 10 by a retaining ring 13b.

[0052] The adjusting element 14 can be designed as a prestressed spring element, such as a disc spring, an elastomer, a compression spring, a wave spring or a flat spring, in particular a disc-shaped flat spring. Preferably, the above-mentioned spring element is made of metal or a compressible material or an elastic material, such as plastic or other elastomers. In the embodiment shown in Figure 1F, the prestressed spring element 14 applies an axial force on the outer surface of the first segment 11 and applies an axial force along the connecting element 13 on the second segment 12 of the pressure ring 10, and the connecting element 13 can be particularly designed as a bolt. Here, friction also acts in such a way that the two segments 11 and 12 of the pressure ring are frictionally kept engaged in any position between the open position and the closed position of the pressure ring 10.

[0053] FIG1G shows another embodiment of the pressure ring 10, in which the adjusting element 14 is axially arranged between the first segment 11 and one end of the connecting element 13, and is in direct contact with the first segment 11 only in the axial direction. The adjusting element 14 in FIG1G is designed as a screw element, in particular, as a nut, which is screwed onto the internal thread of the connecting element 13 designed as a bolt. Also in the embodiment shown in FIG1G, an axial force acts on the outer surface of the first segment 11, and an axial force acts on the second segment 12 of the pressure ring 10 along the bolt 13, and these two forces act via the nut 14. Therefore, the two segments 11, 12 of the pressure ring are frictionally held in engagement at any position between the open position and the closed position of the pressure ring 10. The advantage of using a nut as the adjusting element 14 is that the retaining ring 13b as an additional fixing device can be omitted.

[0054] FIG1H shows another embodiment of the pressure ring 10, in which the adjustment element 14 is designed as a combination of a prestressed spring element and a nut, the prestressed spring element is axially arranged between the first segment 11 and one end of the connecting element 13, and the nut is also arranged at the same end of the connecting element 13 in the axial direction, in direct contact with the spring element. The prestressed spring element can be designed, for example, as a leaf spring, an elastomer, a compression spring, a wave spring or a flat spring, in particular a disc-shaped flat spring. Preferably, the above-mentioned spring element is made of metal or a compressible material or an elastic material, such as plastic or other elastomers.

[0055] The nut and the prestressed spring element 14 exert an axial force on the outer surface of the first segment 11 and on the second segment 12 of the pressure ring 10 along the bolt 13. Therefore, in this embodiment, the two segments 11, 12 of the pressure ring are also frictionally held engaged in any position between the open position and the closed position of the pressure ring 10.

[0056] FIG. 1I shows another embodiment of the pressure ring 10. The adjusting element 14 is designed as an O-ring, which surrounds the connecting element 13 and is axially arranged between the two segments 11, 12. Therefore, the O-ring is in direct contact with the two segments 11, 12 of the pressure ring 10 in the axial direction. In addition, the O-ring 14 preferably has a preload. Preferably, the O-ring is made of a compressible material or an elastic material, such as plastic or rubber. Due to the axial force applied by the O-ring on the inner surface of the first segment 11 and the inner surface of the second segment 12 along the connecting element 13, the friction of the O-ring with the corresponding inner surfaces of the first segment 11 and the second segment 12 produces a friction connection, which is designed to keep the two segments 11, 12 in any position between the open position and the closed position.

[0057] Fig. 2 and Fig. 2A show an embodiment of a pressure collar 20 according to the present invention. The pressure collar has three segments 21, 22, 23. Here, 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 from an open position to a closed position. In the embodiment of the pressure collar 20 shown in Fig. 2, the connecting elements 24, 25 each have a cylindrical fastening element 24a, and in particular have two annular fixing 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 has two annular fixing elements 25b arranged at 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 pressure ring 20 has an adjustment element 26 designed to adjust the third segment 23 to any position between the open position and the closed position. The adjustment element 26 is arranged between the second segment 22 and the third segment 23 and is in direct contact with the second segment 22 and the third segment 23 only.

[0059] In the embodiment shown in Fig. 2 and Fig. 2A, the adjusting element 26 is designed as a prestressed spring element, in particular a leaf spring. Alternatively, the adjusting element 26 can be designed 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] Fig. 2B shows a side view of the embodiment of the pressure collar 20 shown in Fig. 2 and Fig. 2A, wherein the leaf spring 26 is located between the second segment 22 and the third segment 23. The leaf spring 26 is designed to generate an axial force along the connecting element 25, wherein the axial force presses the axial surface (particularly the first inner surface) of the second segment 22 onto the axial surface (particularly the first inner surface) of the third segment 23, so as to hold the third segment 23 in any position between the open position and the closed position by frictional engagement.

[0061] Alternatively, in another embodiment, the adjustment element 26 may be arranged between the second segment 22 and one end of the connecting element 25 , and thus only be in direct axial contact with the second segment 22 and the connecting element 25 .

[0062] Furthermore, according to another embodiment, the pressure collar may have at least one further adjustment element, which may be arranged between the first segment 21 and the second segment 22 and / or between the first segment 21 and one end of the first connecting element 24. Furthermore, the second adjustment element may be identical to the first adjustment element 26 or have a different design.

[0063] FIG3 shows an embodiment of a pressing tool 30 with a pressure ring 10 according to the invention. The pressing tool 30 has two pressing jaws 31, 32. The pressing tool 30 also comprises a pair of connecting elements 31a, 32a which are designed in their shape, size and position such that they are suitable for connecting to a pair of receiving elements 11a, 12a of the pressure ring 10. In FIG3 , the pressure ring 10 and the pressing tool 30 are shown in a closed position, engaged with each other.

[0064] The first pressing jaw 31 is arranged to rotate around the first rotation axis D1, and the second pressing jaw 32 is arranged to rotate around the second rotation axis D2, and is connected to each other by a connecting plate 37. The rotation axes D1 and D2 are particularly designed as bolts. The pressing jaws 31 and 32 can be moved toward each other from an open position to a closed position for pressing. In addition, the pressing tool 30 has at least one adjustment element, which 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.

[0065] In particular, the adjustment element is designed to generate an axial force along the respective rotation axis, wherein the axial force presses the axial surface of the pressing jaws onto the axial surface of the connecting plate 37, wherein the friction of the first axial surface with the second axial surface of the pressing jaws 31, 32 generates a frictional engagement and the pressing jaws 31, 32 are held in the desired position. The adjustment element can be arranged between one of the two pressing jaws 31, 32 and the connecting plate 37, or alternatively between one end of the respective rotation axis D1, D2 and the connecting plate 37. In the first case, the adjustment element is therefore in direct contact with the connecting plate 37 and the respective pressing jaws 31, 32. In the second case, the adjustment element is in direct contact only with the connecting plate 37. In both cases, the friction connection ensures that the pressing jaws 31, 32 can not only be adjusted to any position between the open position and the closed position, but can also be held in this position in addition.

[0066] According to one embodiment of the invention, the adjustment element can be designed as a spring element, and in particular as a leaf spring, a compression spring, a wave spring, a flat spring, in particular a disc spring, an O-ring or an elastomer, in particular an elastomer ring.

[0067] According to another embodiment, the adjustment element may be designed as a screw element, whereby the screw element is detachably connected to the respective rotation axis D1 , D2 , in particular at one end of the rotation axis D1 , D2 .

[0068] All embodiments of the pressing tool 30 also have the features of the above-described adjustment elements of the pressure ring 10 and / or the pressure collar 20. In particular, embodiments of the pressure ring 10, the pressure collar 20 and the pressing tool 30 can be freely combined with one another.

Claims

1. A pressure ring for extruding a compression fitting, comprising: at least two segments (11, 12), at least two of the segments (11, 12) being movably interconnected by means of at least one connecting element (13), the segments (11, 12) being movable from an open position to a closed position; as well as At least one adjusting element (14) is designed to adjust at least two of the segments (11, 12) to any position between the open position and the closed position.

2. A pressure ring for extruding a compression fitting, comprising: 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 regulating element (26), 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.

3. The pressure ring according to claim 2, characterized in that: The pressure collar has at least two adjustment elements (26).

4. A pressure ring or a pressure collar according to any one of the preceding claims, characterised in that The adjustment element (14, 26) is designed to generate an axial force along the connecting element (13, 24, 25), wherein the axial force presses the axial surface of the first segment (11, 21, 23) against the axial surface of the second segment (12, 22) so as to maintain the two segments (11, 12, 21, 23) in a desired position by friction between the first axial surface and the second axial surface.

5. A pressure ring or a pressure collar according to any one of the preceding claims, characterised in that The adjustment element (14) is arranged between one of the two segments (11, 12, 21, 22, 23) and one end of the connecting element (13, 24, 25).

6. A pressure ring or a pressure collar according to any one of the preceding claims, characterised in that The adjustment element (14, 26) is arranged between two of the segments (11, 12, 21, 22, 23).

7. A pressure ring or a pressure collar according to any one of the preceding claims, characterised in that The adjustment element (14, 26) is a spring element and in particular a leaf spring, a compression spring, a wave spring, a flat spring, an O-ring or an elastomer.

8. A pressure ring or a pressure collar according to any one of the preceding claims, characterised in that The adjustment element (14, 26) at least partially surrounds the corresponding connecting element (13, 24, 25).

9. A pressure ring or a pressure collar according to any one of the preceding claims, characterised in that The adjustment element (14, 26) is a screw element which is detachably connected to the connecting element (13) and is particularly arranged at one end of the connecting element (13).

10. A pressing tool for pressing a press fitting, in particular by means of a pressure ring, comprising: Two pressing jaws (31, 32), wherein the first pressing jaw (31) is rotatably arranged around a first rotation axis (D1), and wherein the second pressing jaw (32) is rotatably arranged around a second rotation axis (D2), wherein the rotation axes are connected via a connecting plate (37), and wherein the pressing jaws (31, 32) are movable towards each other from an open position to a closed position for pressing, and at least one regulating element (33, 34), The adjustment element (33, 34) 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.

11. The extrusion tool according to claim 10, characterized in that The adjustment elements (33, 34) are designed to generate an axial force along the corresponding rotation axis, wherein the axial force presses the axial surface of the pressing jaws onto the axial surface of the connecting plate (37), wherein the friction between the first axial surface and the second axial surface holds the pressing jaws (31, 32) in a desired position.

12. An extrusion tool according to any one of claims 10 and 11, characterized in that The adjusting element (33, 34) is arranged between one of the two pressing jaws (31, 32) and the connecting plate (37).

13. An extrusion tool according to any one of claims 10 to 12, characterized in that The adjustment elements (33, 34) are arranged between one end of the corresponding rotation axis (D1, D2) and the connecting plate (37).

14. An extrusion tool according to any one of claims 10 to 13, characterized in that The adjustment element (33, 34) is a spring element and in particular a leaf spring, a compression spring, a wave spring, a flat spring, in particular a disk spring, an O-ring or an elastomer.

15. An extrusion tool according to any one of claims 10 to 14, characterized in that The adjustment elements (33, 34) at least partially rotate about respective axes (D1, D2).

16. An extrusion tool according to any one of claims 10 to 15, characterized in that The adjustment element (33, 34) is a screw element which is detachably connected to the corresponding rotation axis (D1, D2), in particular at one end of the rotation axis (D1, D2).

17. An extrusion device comprising an electric drive and an extrusion tool according to any one of claims 10 to 16, characterized in that: The pressing tool (30) is connected to the driver to move the pressing jaws (31, 32) of the pressing tool (30).

18. A system comprising a pressure ring or a pressure collar according to any one of claims 1 to 9 and a pressing device according to claim 17 with a drive.

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