EP2957389A1 - Device for assembling - Google Patents

Abstract

The invention relates to an assembly tool for holding or fixing at least one attachment relative to a base part, comprising a first hook element, and at least one second hook element which are fixed in a common area, and at least one clamping element, so that the at least one attachment in its positioning and orientation can be held or fixed relative to a base part by bracing.

Description

The invention relates to an assembly tool for holding or fixing at least one attachment relative to a base part, comprising a first hook element and at least one second hook element, which are fixed in a common area, and at least one clamping element, so that the at least one attachment in its positioning and orientation can be held or fixed relative to a base part by bracing.

There are various assembly situations or craft works known in which the human primarily suitable for these activities limbs, ie Preferably, the arms and hands are practically not sufficient to realize all simultaneously required active and passive functions.

For example, to process a metallic workpiece by filing, it is usually necessary to guide the file ambidextrous to precisely bring about the desired material removal. To support the metallic workpiece, the worker is in this situation no limb available. It is known to position and hold the workpiece in such machining operations by collets, vices or similar holding tools.

When soldering is performed, it is often necessary to guide both soldering iron and the solder at the joint and to support the elements to be joined. In order to support the possible two-way operation of humans, a so-called third hand is usually used, which fulfills the holding function of the joining partners, so that the worker can perform both solder and soldering iron or blowtorch. Often, especially in the case of very small components to be soldered, a magnifying glass is also integrated into the third hand.

A comparable situation may exist, for example, when workpieces are to be welded together. In these cases, not only the relative position of the workpieces to be joined before and during the welding is reliably defined, but it must be applied even in strongly heated joining partners high holding forces. In such an environment, holding by hand is also out of the question for these reasons. It is known that locking pliers, so-called grip pliers, can reliably take over these mounting tasks.

There are special requirements when very sensitive and, or geometrically complicated elements must be supported. The same applies if a particularly precise positioning is required. In plant engineering, there are a variety of situations in the assembly of components, components, sub-assemblies and in particular at locations where connections between components must be realized, which include requirements of the aforementioned kind partially or cumulatively. Piping is one of many technical fields to which this applies.

To realize a piping system, this is usually formed from a plurality of pipe elements to be joined together. For this purpose, pipe elements are each connected to each other at the front. A well-known and proven connection technique is to attach flanges to the tube ends of the tube elements, wherein the flanges are designed such that they both correspond to each other as well as by means of a suitable connection technique to each other can be fixed. As a rule, such compounds must be carried out liquid and / or gas-tight. Such a pipe system is available for example at the European XFEL GmbH.

The European XFEL is a linear accelerator that extends from the DESY site in Hamburg to Schenefeld in Schleswig-Holstein. Along the three-kilometer-long XFEL tunnel, a stainless steel pipe consisting of many individual pipes and membrane bellows is installed. This pipe system, which has an outer diameter of approx. 30 mm to 250 mm and CF dummy flanges and CF add-on parts of nominal sizes DN16 to DN250, serves as a transport path for the ultra-short flashes of light that travel the entire distance in a vacuum. These individual tubes are screwed together by means of so-called CF flanges, which are welded to both ends of a tube.

Since a vacuum should prevail in the entire pipe system, the flanges must be sealed against leaks, which is ensured by means of copper seals. Cutting edges incorporated in these flanges intersect in the inserted copper seal on both sides when the screw connections are tightened all around. In order to achieve a vacuum on the entire tube must be suitable vacuum generators, such. B. various vacuum pumps and turbo pumping stations, be connected to the additionally welded pipe exits. Each of these outlets also has a CF flange and, depending on the pipe diameter, the nominal diameters of these flanges vary.

In order to have as many connection options along the entire pipe, more pipe outlets, as required in normal operation, provided. So you have the possibility in the future to connect further measuring technology or vacuum pumps to these additional spare flanges. It is not possible to subsequently weld other pipe outlets with CF flanges to the entire pipe system, or this is possible only with considerable costs and an enormous amount of work. For this reason, it is the best economical and technical solution to install several reserve connection flanges with different nominal diameters along the entire pipe system. These spare flange openings must be closed when not in use by means of CF blind flanges, so that a vacuum can be achieved inside. At the end of the kilometer-long pipe system, experiments are built for scientific measurements.

These very complex structures require extremely high flexibility with regard to the positioning of measuring technology. To make this possible, many additional pipe outlets with different sized CF flanges are provided here. These are then, if they are not used, provided with CF blind flanges. Thus, depending on the experiment and requirements, they can be opened and replaced with additional measuring devices etc. Thus, there are very many CF blind flange connections with diameters DN16 to DN250 along the entire pipe system and especially in the field of experiments, where various CF components must be installed by fitters.

These flange joints, including copper gaskets, must be connected in such a way that they are tight afterwards - this is difficult to implement by one person. As with many assembly work, the "third hand", which is needed to carry out the installation work, is missing. Flange mounting errors have one enormous influence on the maximum achievable vacuum within a pipe or a chamber and must be avoided in any case. Whether you can achieve a very good vacuum in the recipient, depends on many different factors, but not ultimately on the absolute tightness of many CF flange connections. Incorrect assembly of the CF flanges would lead to leaks, which in the worst case would result in failure of the entire vacuum system.

For small vacuum chambers, you can usually find out relatively quickly whether all flanges are tight, as they can be evacuated quickly due to their small volume. This is necessary to locate the leak with a detector.

It is different with long pipelines or large vacuum chambers. Here, this pumping process takes much longer due to the large volume. So if one or even more leaks are present, the entire evacuated system must be carefully vented with dry nitrogen through a filter unit, so that inside there is again atmospheric pressure. Subsequently, a special leak detector must be attached to the recipient, with which the leak can then be located. Long evacuation and aeration times are unavoidable during leak detection because the pumps take a certain amount of time to reach a desired vacuum level. The ventilation process, which is controlled by a special manual valve with filter unit, is also very time-consuming, since the evacuated system must not be ventilated suddenly. Thus, the enormous amount of time spent locating existing leaks has to be accepted.

After a leak detector has been installed and the entire system has been evacuated, the leak detection can be started. Here, all flange connections must be sprayed with helium with a finely dosed spray gun. If this gas then enters the interior of the evacuated pipe system to the detector, then this emits an alarm signal or in the diagram of the program is a clearly rising peak is displayed. In this case, the leak is localized and can be remedied. In addition, however, all other flange connections should then be tested in the same way, because there may also be several leaks.

To correct the leaks, it may be sufficient to retighten the screws of the leaky flange connections. In most cases, however, the built-in copper gasket must be replaced. Whether it was sufficient to retighten the screw connections shows a renewed spraying of the flanges with helium. If the detector continues to strike, the copper seals must be replaced with the leaking CF flange connections. For this purpose, the vacuum system must be ventilated as described.

In order to ensure after the rework that the leaks have been remedied, the entire pipe system must be evacuated again after renewal of the copper seal and reassembly of the CF component.

This rework is very time consuming and causes enormous costs in the event of a failure in the main use time.

In the worst case, the leak detection procedure described must be repeated several times, since during assembly it can only be determined by visual inspection whether the new copper seals have been installed correctly.

If the CF flange of the component to be assembled, including the copper seal, is placed on the welded CF flange and the first screw connections are made, then the CF component must only be readjusted with extreme caution, since the very sensitive cutting edges of the CF flanges or the soft ones Copper seal could be damaged. Although leaks can never be ruled out, they must be kept to a minimum. Localizing and eliminating leaks is not only time consuming but also costly. Such leaks occur, for example, in a service operation where a fixed completion date has been agreed, and the consequence of a total loss of the entire investment, then the damage is exorbitantly high.

So far, two people are usually required to assemble CF components. One person fixes the CF removal part together with the copper seal on the CF flange welded to the recipient, and the other person makes the screw connections with both hands. However, as this is only the ideal case and there is not always a second person available for assembly, most CF flange connections are made by one person only. But it does not decide the technical qualification of the Montierenden, whether the flange connection in the connection is tight, but only the human skill of the installer.

An installer, whether or not he has the necessary dexterity to properly assemble a CF attachment, can not rule out that the flange connection will leak after assembly. Here, the installer needs something that ensures proper CF flange mounting and eliminates mounting errors. In addition, the assembly process should be the same for all people, regardless of how much assembly experience someone has.

The following process steps for the production of a CF flange connection or when mounting a CF component to another CF flange (here, for example, mounting a CF blind flange to a welded CF flange) can be carried out: First, the copper seal must be carefully placed on the Cutting edge and in the designated groove of the CF blanking flange and hold with both forefingers. Then the CF blind flange incl. Copper seal is picked up and carefully positioned on the end face of the welded CF flange. Here, the copper seal must be held by both index fingers until it rests on the end face of the welded CF flange. Then carefully push the CF blind flange with the copper seal over the end face of the welded-on CF flange until the copper seal comes to lie in the groove of the CF flange. Careful readjustment of the positioning must ensure that the welded-on CF flange and the inserted CF blind flange are axially aligned with their lateral surfaces. The orientation of CF flange and CF blind flange to each other is made by rotational readjustment such that the leak detection grooves of CF flange and CF blind flange match.

After the correct positioning and orientation of both joining partners is established, the assembly is held in this position with one hand. With the hand still free, a first screw with washer is passed through one of the overlapping holes of CF flange and CF blind flange. From the hand holding the CF blind flange in the previously aligned position, the index finger is spread and pressed centrally on the screw head of the first screw. With the free hand, a nut is then rotated on the thread end of the already inserted screw until it rests on the rear flange surface of the CF flange.

Continuously the joining partners are held in the positioning and again with the free hand, a second screw and washer guided by another superimposed bore of CF-flange and CF-blind flange, wherein preferably the screw is inserted into that superimposed bore, which of the already realized Opposite screw connection.

Again, the index finger is splayed out of the hand holding the flange in the previously aligned position and pressed onto the screw head of the second screw. Then, the second nut is picked up and turned onto the end thread of the second screw until it, too, rests on the back flange surface of the CF flange. In this assembly stage, the CF blind flange and the copper seal are fixed in such a way that they can no longer tip off from the CF flange. The CF blind flange should no longer be readjusted to protect the sensitive cutting edges of the CF flanges.

Subsequent shifting of the CF blind flange could also result in damage to the relatively soft copper gasket. All other screws and washers required to make the connection and the number of holes are passed through the remaining holes in the CF flanges in any order, and the remaining nuts are turned onto the end threads of the bare screws until they also rest on the back flange surface of the CF Flange rest.

The final assembly step is that all screw connections are tightened in a circle until the flange surfaces lie on one another, or only a minimal, evenly uniform gap is visible between the flange surfaces.

The assembly of CF components (example: CF blind flange) can be classified into the categories a) moving activities including feeding, positioning and orientation, connection and b) static activities including holding the flange components. In particular, the phased parallel realization of mounting and movement activities pose significant risks of incorrect assembly.

Keeping the CF blind flange in the aligned position is not only sensible, but mandatory because otherwise the CF blind flange would tip over and fall down. For all subsequent steps, it is very hindering that a hand is needed to fix the CF blind flange and can not undertake any other activities. In addition, the visual inspection is neglected in any additional task, besides holding the CF blanking flange in a fixed position, because when holding the CF blanking flange, the eyes must be directed in the direction of the male screws and nuts.

After positioning and orientation of the flange components to each other, the free hand takes on the first screw and washer, wherein in the Care must be taken to ensure that in advance each screw is provided with a washer and these, together with the nuts, are within reach. The holding hand has the main task to realize the holding of the CF blind flange in aligned position. If this is neglected to accomplish a second task, the additional holding of the screw head, the CF blind flange, regardless of the flange size, can tip over and the seal can fall out or slip out. This would mean that all work steps must be performed again from the beginning. In addition, however, the seal would have to be checked for damage that may have resulted from slipping over the cutting edges of the CF flanges.

If the copper seal is still usable, it must be cleaned with high-percentage alcohol (for example, isopropanol) so that particles can not get into the inside of the vacuum tubes, which would have a negative effect on the achievable vacuum. In addition, the employee must also clean or replace his gloves, which must be worn during assembly of vacuum components. The same coordinator's requirements for the fitter are also given for the second screw, so that here too the risks are as described above and comparable.

In addition to the significant requirements for precise orientation, positioning and assembly of various CF components, there is another requirement for use with piping to be evacuated - the fixtures to be used in this environment must meet clean room criteria and support a low particulate situation , In particular, mounting devices must be designed such that no particles are emitted as possible and a very comprehensive cleaning suitability is present.

It is an object of the present invention to provide a device that supports the assembly process of attachments and the risk of incorrect assembly reduced. Cost-disadvantageous repair work should be avoided. Use in clean room environments should be supported.

According to the invention, this object is achieved by an assembly tool for holding attachment parts to a base part, so that at least one static assembly activity is realized by the assembly tool. The assembly tool is designed so that it supports the orientation and positioning of an attachment its fixation relative to its joining partner and, or in a defined position, so that the assembly person relieved of this activity or a second assembly person is not required.

This makes it possible for an individual to carry out the attachment installation cost-effectively, time-saving and with maximum and constant reliability. If the add-on part is formed by a CF blind flange, a liquid- and / or gas-tight mounting is supported. The structural design and the choice of materials of the mounting device support the use in clean rooms.

The assembly tool according to the invention is particularly suitable and constructed for mounting largely rotationally symmetrical or point / line symmetrical attachments such as blind flanges, flanges, cylindrical housing, valve cartridges, piston-mounted attachment or installation parts, square cover, polygonal end plates, etc.

The assembly tool is formed essentially from at least one first hook element and a second hook element, which are preferably fixed in a common point in a symmetrical arrangement, and at least one clamping element. The hook element in turn is essentially formed by means for fixing in the common point, an arm and an end, hook-shaped projection for engagement with an undercut of the Base. Both hook elements can also be made in one piece as a hook clamp, so that the common point is formed by the one-piece material.

The at least one tensioning element is suitable for exerting an axial force on the attachment, so that a force action can be generated between and via the attachment or the several attachments and the respective hook-shaped protrusions bearing against the undercuts of the base part, as a result of which fixation by tension becomes possible , Preferably, the at least one tensioning element is arranged in the common point of the hook elements or the hook clamp. For axial force generation, the tensioning element is moved along a path which lies in or parallel to the center axis of the attachment and, or base part. The at least one tensioning element is designed for this purpose in a first embodiment as a threaded rod, which in an internally threaded portion, i. a threaded bore is introduced in or parallel to the common point of the hook elements or hook clamp, guided.

Other possibilities for realizing the tension by a tensioning element are provided in further embodiments according to the invention. Toggle arrangements, eccentrics, spring-loaded plungers, encapsulated pneumatic cylinders with battery preload or linear displacements by magnetic cylinders are further possibilities for forming the tensioning element.

The first embodiment of the assembly tool according to the invention with a first hook member and a second hook element realizes the biasing force along two lines of action, ie a line of action between the point of the clamping element on the attachment and the contact point of the hook-shaped projection of the first hook element on the one hand and between the point of the clamping element the attachment and the contact point of the hook-shaped projection of the second hook element to the other. In this mounting tool variant is advantageous that the tool very easy and is formed by a few parts, so that a simple and one-handed attachment of the tool to the base and attachment and a cost-effective overall structure is supported.

Another embodiment of the assembly tool according to the invention provides for the use of a third hook element. The third hook element is formed in a manner analogous to the first and second hook element substantially by means for fixing in the common point, an arm and an end, hook-shaped projection for engagement with an undercut of the base part. Also in this embodiment, the first and the second hook element may be integrally formed as a hook clamp, so that the common point is formed by the one-piece material.

The third hook element can be fixed by fixing means at this point. The at least one clamping element provided as in the first embodiment is preferably arranged in the common point of the three hook elements or the hook clamp and the hook element. The hook elements of the second embodiment may be arranged differently from each other and relative to the clamping element depending on the geometric conditions of the attachment and the base part. In rotationally symmetrical mounting and base parts, the mounting tool is preferably formed symmetrically, i. the common point of the hook elements and the clamping element are arranged centrally, the three hook elements spread from the common point radially outward and each have the same distance from each other.

Likewise, it is possible and depending on the mounting task also makes sense to form the mounting tool partially asymmetrical, ie the common point of the hook elements and the clamping element are arranged centrally, the three hook elements spread from the common point radially outward and each have a unequal distance to each other on. Finally, a completely asymmetrical assembly tool can be formed by an eccentric common point, the three hook elements spread from the common point radially outward and each have a unequal distance to each other.

The second embodiment of the assembly tool according to the invention comprising a first hooking element and a second hooking element and a third hooking element realizes the biasing force along three lines of action of force, i. a force line of action between the point of application of the clamping element on the attachment and the contact point of the hook-shaped projection of the first hook element on the one hand, between the point of the clamping element on the attachment and the contact point of the hook-shaped projection of the second hook element to the second and between the point of the clamping element on the attachment and the contact point of the hook-shaped projection of the third hook element to the third.

In this second mounting tool execution is advantageous that due to the three lines of force, the fixation by clamping very evenly on mounting and base part acts and so damage or deformation structurally weak cultivation or base parts and possibly other joining partners such as gaskets, O-rings o.ä. is avoided.

In order to be able to push the second embodiment onto the mounting and base part, this must be supported either by a suitable arrangement of the hook elements or by at least one movable hook element.

The invention teaches that the elements of the assembly tool can be formed of the same or different materials depending on the intended use and the assembly task. The material properties are the installation environment, the amount of forces required for fixing the fixture and possibly other criteria such as abrasion behavior, surface condition, static and sliding friction values and behavior, resistance to various actions how to adjust temperature, vibration, load changes, humidity, detergents, etc. Cost aspects and suitability for chip and / or plastic shaping are further selection criteria.

The mounting device according to the invention is intended for use in clean rooms and for the installation of CF flange connections. Most work on CF flanges or CF blind flanges takes place in cleanroom tents under particle-free conditions. Thus, it is very important within these cleanrooms that only materials are used that have no abrasion due to their surface quality and thus can not release particles. This also applies to handling tools and consumables. Materials which are particularly suitable for these requirements are e.g. Stainless steel, titanium, copper and brass.

A variant of the mounting device for mounting CF flange connections outside of clean rooms is made of stainless steel. The clamping element in the form of a threaded rod cooperates with an introduced into the common point internal thread. In order to counteract the problem of cold welding, which also results in the adhesive and sliding friction properties of the stainless steel, it is necessary to select a material for the threaded rod which is cheap, i. has low friction to stainless steel, is not made of stainless steel and is at least Abriebarm. Suitable for this task would be e.g. Brass. Another advantage of brass as a threaded rod material is that the material wears out considerably faster than stainless steel. (This makes it possible to design the threaded rod as a wearing part and to replace it at the end of the service life without having to renew the entire mounting device.)

Alternatively, thought of a lighter construction. Further, the hook elements should be made of aluminum (anodized), the spindle made of stainless steel, the handle made of stainless steel and the pressure piece (eg hinge plate (63)) rather of an abrasion-resistant material. High-grade steels, plastics, castings (coated or soft, but not particle-releasing materials) would be used.

A variant of the mounting device without the requirement component of the use in clean rooms can be made of the material aluminum. Determined by the material properties of aluminum, this material releases very many fine particles when rubbed, which is not acceptable under clean room conditions. If particle abrasion is acceptable, aluminum can be used.

Advantages result from the favorable aluminum price and the very good processing properties. However, the aluminum material can also be used in clean room environments and therefore be the basis for the assembly tool, if it abrasion resistant properties are impressed. For example, an alloying addition, a surface hardening, a coating by lacquers, plastics, or the like. take place and so the abrasion behavior can be favorably influenced, so that the clean room use is made possible.

There are many different flanges, which are manufactured according to different standards. One variant is the CF flanges and these are usually available in the sizes DN16, 40, 63, 100, 130, 160, 200 and 250. The design of these CF flanges varies so that there are blind flanges, reducing flanges, transition flanges, etc. in these sizes. Then there are many different CF components that consist of a mostly electronic assembly with welded CF flange. These components are then available in a variety of sizes and they must all be connected to the base part (welded CF flange on the pipe).

So here is not just a tool that fixes a CF blind flange, but many different assembly tools for many different CF components of different shapes and sizes. CF components are thus the main group and CF blanking flange, CF reducing flange, CF pipe piece, CF-T piece, CF flange turbopumps, etc. belong to subgroups.

The tool for the assembly of CF dummy bottles described in this document must be used for different flange sizes and different designs. B. the housing, enlarged or reduced.

In summary, the invention is essentially the assembly of the three hook elements as described in prototype 2 or series type. These hook elements together with hook plate must be recalculated and designed for different CF components, but this can and should happen according to the same pattern as for the CF blind flange. For all CF components, you then only need the total height and the CF flange belonging to the assembly. Added to this is the surface geometry of the CF component to be attached (attachment), which determines the pressure piece (eg hinge plate). This allows you to calculate the assembly tool geometry for all other CF components as well as other flange components.

Figur 1

eine perspektivische Ansicht der Montagevorrichtung (1) in einer Ausführungsvariante,

Figur 2

eine perspektivische Ansicht der Montagevorrichtung (1) in einer weiteren Ausführungsvariante,

Figur 3

eine perspektivische Ansicht der Montagevorrichtung (1) in einer weiteren Ausführungsvariante,

Figur 4

eine perspektivische Ansicht der Montagevorrichtung (1) in einer anderen geometrischen Ausführungsvariante mit wenigstens einem Anbauteil (110) und einem Basisteil (100) in zueinander nicht verspannter Lage,

Figur 5

eine perspektivische Ansicht der Montagevorrichtung (1) gemäß Figur 4 in einer anderen räumlichen Ausrichtung,

Figur 6

eine perspektivische Ansicht der Montagevorrichtung (1) gemäß Figur 4 und 5 in einer weiteren räumlichen Ausrichtung,

Figur 7

eine perspektivische Ansicht der Montagevorrichtung (1) gemäß Figur 4 bis 6 in einer weiteren räumlichen Ausrichtung,

Figur 8

eine perspektivische Ansicht der Montagevorrichtung (1) gemäß Figur 4 bis 7 in einer weiteren räumlichen Ausrichtung,

Figur 9

eine perspektivische Ansicht der Montagevorrichtung (1) gemäß Figur 4 bis 8 in einer weiteren räumlichen Ausrichtung,

Figur 10

eine perspektivische Ansicht der Montagevorrichtung (1) gemäß Figur 4 bis 9 in einer weiteren räumlichen Ausrichtung,

Figur 11

eine Darstellung der Montagevorrichtung (1) gemäß Figur 4 bis 10 in drei Ansichten,

Figur 12

eine perspektivische Darstellung zur Veranschaulichung einer Anwendung der Vorrichtung,

Figur 13

eine perspektivische Darstellung zur Veranschaulichung einer weiteren Anwendung,

Figur 14 bis Figur 17

Darstellungen zur Veranschaulichung der geometrischen Gestaltung einzelner Komponenten.

Figur 18

eine Montagevorrichtung mit Sicherungselement

In the drawings, embodiments of the invention are shown schematically. Show it:

FIG. 1

a perspective view of the mounting device (1) in a variant embodiment,

FIG. 2

a perspective view of the mounting device (1) in a further embodiment,

FIG. 3

a perspective view of the mounting device (1) in a further embodiment,

FIG. 4

a perspective view of the mounting device (1) in another geometric embodiment variant with at least one attachment (110) and a base part (100) in non-strained position,

FIG. 5

a perspective view of the mounting device (1) according to FIG. 4 in a different spatial orientation,

FIG. 6

a perspective view of the mounting device (1) according to FIG. 4 and 5 in a further spatial orientation,

FIG. 7

a perspective view of the mounting device (1) according to FIGS. 4 to 6 in a further spatial orientation,

FIG. 8

a perspective view of the mounting device (1) according to FIGS. 4 to 7 in a further spatial orientation,

FIG. 9

a perspective view of the mounting device (1) according to FIGS. 4 to 8 in a further spatial orientation,

FIG. 10

a perspective view of the mounting device (1) according to FIGS. 4 to 9 in a further spatial orientation,

FIG. 11

an illustration of the mounting device (1) according to FIGS. 4 to 10 in three views,

FIG. 12

a perspective view for illustrating an application of the device,

FIG. 13

a perspective view for illustrating a further application,

FIG. 14 to FIG. 17

Illustrations to illustrate the geometric design of individual components.

FIG. 18

a mounting device with securing element

FIG. 1 shows a perspective view of the mounting device (1) in a variant. The at least one first hook element (10) and second hook element (20) are designed as a hook clamp (40). The third hook element (30) is fixed to the hook element (40) by connecting means (70) in the common point (50).

The connecting means are in by FIG. 1 shown variant by a square (71) formed, which is firmly bonded to the arm (11) of the third hook element (30) and fastened by means of connecting means (72) in the form of screws on the hook bracket (40).

Both the attachment of the square (71) on the arm (11) and its attachment to the hook bracket (40) can optionally cohesively e.g. by welding or gluing or positively by screws or rivets or a combination of material and positive connection. In the case of a bonded connection, both connecting means (72) and the square (71) can be dispensed with and the arm (11) of the third hook element (30) can be brought directly into connection with the hook clamp (40). In this case, the connecting means (70) are formed by the substance itself. It is entirely possible to dispense with connecting means (70) if the hook elements (10, 20, 30, 40) of the assembly tool (1) are made in one piece as a further embodiment variant.

The clamping element (60) positioned in the common point (50) is formed by a threaded rod (62) which is movably fixed in the internal thread (64) and has a handle (61) and a hinge plate (63) at its end. The handle (61) can optionally and depending on the purpose as a knurled knob, for example made of stainless steel or as a star grip, for example made of plastic.

If a handle, regardless of its geometric design as a knurled or star handle made of plastic, this can directly from the threaded rod Be molded brass or stainless steel. The knurled knob can be made of stainless steel. In particular, if the mounting or base part (depending on which of the parts the clamping element comes to rest) has a sensitive contact surface is recommended, one end of the threaded rod (62) arranged hinge plate (63), which can compensate for both angle error and the contact surface the clamping element (60) to the mounting or base part increases and as a result reduces the surface pressure to provide.

FIG. 2 shows a perspective view of the mounting device (1) in a further embodiment. Deviating from the embodiment according to FIG. 1 Both phases (13) and undercuts (14) are provided on the hook-shaped projections (12). By each worked undercut the contact surface of the hook-shaped projection (12) can be processed to the cultivation or base part in a favorable manner characterized in that the preferably cutting tool an outlet space is offered. However, this discharge space is sold at the disadvantage that the undercut has an increased notch effect.

The clamping element (60) positioned in the common point (50) is formed by a threaded rod (62), which is movably arranged in the internal thread (64) and has a handle (61) at the end opposite the contact surface of the threaded rod (62) for the mounting or base part ) having. By turning the threaded rod (62) in the threaded bore (64) by means of the handle (61), the axial position of the threaded rod is changed, so that an end of the threaded rod (62) adjacent attachment can be clamped and thereby fixed. The bracing forces arise as a function of the introduced torque on the handle (61) and the geometric relationships of the construction.

The tensioning element (60) can also be formed, for example, by a spring-loaded plunger, so that the tensioning forces result from the at least partially prestressed spring and are transmitted by the plunger and its frontal contact surface.

Other possibilities for realizing the tension by a tensioning element (60) are e.g. Toggle arrangements, eccentrics, encapsulated pneumatic cylinders with battery preload or linear displacements by magnetic cylinders. The embodiment of the clamping element (60) is basically independent of the number, arrangement and embodiment of the hook elements (10, 20, 30, 40) of the assembly tool (1), wherein in the case of a thread pairing on the choice of material as described above must be taken.

FIG. 3 shows a perspective view of the mounting device (1) in a further embodiment. The mounting device (1) is virtually identical to the in FIG. 2 shown situation and added to the hinge plate (63).

FIG. 4 shows a perspective view of the mounting device (1) in another geometric embodiment variant with at least one attachment (110) and a base part (100) in non-strained position. FIG. 4 represents the situation of the attached, but not yet clamped by the clamping element (60) mounting tool (1). The clamping by the clamping element (60) takes place by force against the base part (100). Likewise possible is the mirror image situation, ie tension by the tensioning element (60) as a result of introduction of force relative to the attachment (110).

The FIGS. 5 to 10 show perspective views of the mounting device (1) according to FIG. 4 in a different spatial orientation.

FIG. 11 shows an illustration of the mounting device (1) according to FIG FIGS. 4 to 10 in three views.

Alternatively to the use of a hinge plate, other constructions are possible.

The hinge plate can also be another component, which depends on the respective CF component to be fixed and its body shape. So is the suitable Pivot plate particularly good to components with flat surfaces, as z. B. in CF blind flanges is the case to fix.

For components with a different body geometry but a completely different pressure piece may be better.

The CF blank flange DN100 is just one example of the general application. The documentation shows an exemplary tool for mounting for CF blank flanges of size DN100. Many different tools for various standard flange sizes (DN16,40,63,100,130,160,200 and 250) are to be created, but with still different component assemblies.

As an example: The assembly tool for mounting a DN100 CF dummy bottle is also to be used for a pipe section with two welded CF flanges DN100, provided that the arm length is changed and the required pressure piece (hinge plate) is fitted.

All flange sizes would get their own tool, with which one then possibly even a variety of other components not identical holding or fixing can. But then only the arm length ( Fig.1 / 11) of the hook elements and the hinge plate ( Fig.1 / 63) is replaced by another purchase or production part. Here, the flange standard ISO / TS 3669-2 (see development work / A.Bartmann) should be mentioned. For example: ... it is designed that CF components, which were manufactured in close tolerance to the Flanschorm ISO / TS 3669-2, as well as other components according to claim 19 are held and fixed. At the same time or in its own claim, it should be mentioned that all other flanges, regardless of the type and assembly, can be held or fixed by this assembly tool, provided that, as mentioned above, the arm length ( Fig.1 / 11) of the hook elements and the hinge plate ( Fig.1 / 63) is replaced with another purchase or production part.

• Die Montagewerkzeuge für Komponenten mit CF-Flanschen oder vergleichbaren Anschlussflanschen sind mit einer Hand zu bedienen.
• Die Montagewerkzeuge für Komponenten mit CF-Flanschen oder vergleichbaren Anschlussflanschen sind durch die Bauart (3 Haken) selbsthaltend auf der Mantelfläche der zu verbindenden Flansche.

In addition or in addition to the variants already described, the following embodiments are also intended.

• The assembly tools for components with CF flanges or comparable connection flanges can be operated with one hand.
• The assembly tools for components with CF flanges or comparable connection flanges are self-retaining due to the design (3 hooks) on the lateral surface of the flanges to be connected.

FIG. 14 illustrates further details of the device. A substantially corresponding representation is still in FIG. 17 contain.

A handle (201) is provided with a threaded hole depending on the diameter of the threaded spindle. A hook element (202) is designed for the CF components to be connected. The hinge plate (203) is particularly suitable for pressing on a flat surface of CF components.

A cylinder cap (204) is provided with a threaded bore which is not continuous. This is used for receiving and pressing on the surfaces of cylindrical or almost cylindrically shaped CF components.

The hood (205) is exactly adapted to the shape or component contour of a CF add-on part, for example a residual gas analyzer. The hood has a non-continuous threaded hole, which serves for fixing and for pressing.

In the exemplary embodiments, the use of three hook elements (10, 20) has been described by way of example. In principle, however, more than three hook elements (10, 20) can also be used. However, an embodiment in which two hook elements are arranged opposite each other and with their transverse webs facing each other in directions is preferred. hereby a distance is provided between the hook elements, which can be used for sliding onto the element to be mounted. Instead of a single third hook element but could also be used, for example, two or three third elements, but this would increase the weight of the device.

According to a further embodiment can by accordingly FIG. 18 At least one securing element from falling out of the mounting device can be prevented. The securing element can serve as a guide during the fixation, for example. According to a simple embodiment is used as a corresponding securing element attached to the mounting device profile (see drawings) with two wing nuts. In particular, for example, is also intended to fix the respective flange with two screws. With a corresponding use of two screws and wing nuts, the securing bracket and then the actual assembly tool are removed first.

The retaining bolts / screws (acc FIG. 18 ) prevents the mounting device including flange component from slipping off the flange welded to the recipient.

Alternatively, it is also intended to use a tension band or paragraphs incorporated in the retaining clip. This then serves for fixation and / or guidance.

According to one embodiment, it is contemplated that the at least one first hooking element (10) and all other hooking elements (20, 30, 40) are formed by aluminum having a surface which promotes a reduced particle-emitting effect.

According to one embodiment, it is contemplated that the mounting tool (1) is suitable for holding and fixing largely rotationally symmetrical or point-symmetrical or linearly symmetrical attachments such as blind flanges, flanges, cylindrical housing, valve cartridges, piston-shaped attachment or installation parts, square cover or polygonal end plates.

According to one embodiment, it is envisaged that the assembly tool (1) is designed geometrically and with respect to the dimensions such that a CF blank flange DN 100 with the outer diameter 152.4 mm can be held and fixed.

According to one embodiment, it is contemplated that the mounting tool (1) is geometrically designed such that it has symmetrical or axisymmetric or point-symmetrical shape.

According to one embodiment, it is contemplated that the mounting tool (1) supports the mounting or fixing of at least one attachment (110) relative to a base part (100) both in a defined position and in a defined orientation.

According to one embodiment, it is contemplated that use of the assembly tool (1) according to any one of the preceding claims for holding or fixing a component with integrated CF flange relative to a CF flange connection in a clean room ..

According to one embodiment, it is contemplated that the materials and, or surfaces of the elements of the mounting device (1) are formed such that a particle emission is reduced.

Claims (15)

Assembly tool (1) for holding or fixing at least one attachment (110) relative to a base part (100), comprising a first hook element (10) and at least one second hook element (20), which are fixed in a common area (50), and at least one clamping element (60), characterized in that at least one attachment part (110) can be held or fixed in its positioning and orientation relative to a base part (100) by clamping. characterized in that the materials and, or surfaces of the elements of the mounting device (1) are formed such that a particle emission is reduced. Assembly tool (1) according to claim 1, characterized in that the first hook element (10) and the second hook element (20) are integrally formed as a hook clamp (40). Assembly tool (1) according to claim 1, characterized in that a third hook element (30) in a common point (50) is fixed. Assembly tool (1) according to one of the preceding claims, characterized in that the hook elements (10, 20, 30, 40) are integrally formed. Assembly tool (1) according to one of the preceding claims, characterized in that the hook elements (10, 20, 30, 40) are formed essentially by one arm (11) and one end hook-shaped projection (12). Assembly tool (1) according to claim 5, characterized in that the hook-shaped projection (12) has an undercut (14) by etching and other erosion. Mounting tool (1) according to claim 1 or 3, characterized in that the at least two hook elements (10, 20, 30) by fixing means (70) in the common point (50) are fixed. Assembly tool (1) according to claim 7, characterized in that the fixing means (70) are a material connection or a positive connection comprising a square (71) and connecting means (72). Assembly tool (1) according to claim 1, characterized in that the at least one clamping element (60) in the common point (50) is arranged. Assembly tool (1) according to claim 1, characterized in that the clamping element (60) substantially by a handle (61) and a threaded rod (62) is formed and arranged in a threaded bore (64) movable. Assembly tool (1) according to claim 10, characterized in that the ends of the threaded rod (62) of the clamping element (60), a hinge plate (63) is fixed. Assembly tool (1) according to claim 10, characterized in that the threaded rod (62) consists of metal. Assembly tool (1) according to claim 10, characterized in that the handle (61) is made of metal or plastic. Assembly tool (1) according to claim 7, characterized in that the fixing means (70) are formed of stainless steel. Assembly tool (1) according to claim 1, characterized in that the at least one first hook element (10) and all other hook elements (20, 30, 40) are formed by stainless steel.

Images