EP3448681B1 - Round template receiver ring and rotational application device provided with same - Google Patents

Description

The invention relates to a circular template receiving ring, set up for connecting a cylindrical template, by means of which substance can be transferred to a surface substrate carried by a substrate carrier, with a rotary bearing device arranged on a device frame for rotating mounting of the cylindrical template about a template rotary axis determined by the cylinder axis, the template Receiving ring is formed by a bearing connecting ring, which can be connected to a template rotary bearing of the rotary bearing device for its rotary bearing, and by a receiving fastening means, which is designed for releasable, rotationally fixed connection to a template end ring edge of a template end ring attached to the cylinder template, wherein the receiving fastening means for axially clamping the cylinder template can be subjected to axial force. The invention also relates to a rotary application device comprising at least one cylinder template with a first and second template end ring attached to the ends of the cylinder template, a device frame on which a substrate carrier extending below the cylinder template is arranged, and the ends of the Cylinder template-associated template rotary bearings of a rotary bearing device, which are arranged on the device frame and with which the template end rings are connected for the rotary mounting of the cylinder template.

Cylinder stencils, also called circular stencils, are used in rotary application devices that are used to produce screen prints or coatings on a substrate that is moved past the cylinder stencil. The cylinder template is removably installed in the application device of a printing or coating machine, and for such setting up it is to be inserted or removed from a rotary bearing device at its axial ends. A connection and storage system is required for this connection, which detachably receives each template end and rotatably supports it. The axial ends of the cylinder template have template end rings, which are glued into a substance-permeable template sleeve that determines an application structure. Each template end ring can be detachably connected to a template receiving ring. The template holder ring can be connected to an associated template rotary bearing of a bearing head referred to as a printhead or station head. Different recording systems and different storage systems are known.

A system that is widespread on the market uses a stencil receiving ring which is provided with closure elements of a bayonet catch, which are designed to match corresponding bayonet catch elements of a stencil end ring which can be detachably fastened. Stencil end ring and stencil receiving ring can be inserted axially one into the other and connected and separated by relative rotation about the stencil rotation axis, whereby a connection that can be subjected to pressure for axial clamping of the cylinder stencil is produced. A bayonet connection between the template end ring and template receiving ring is, for example, off DE 20310859 U1 as well as from WO 2009/030301 known. In each case, a system is disclosed in which the template receiving ring is designed as a special bearing connecting ring which forms a pivot bearing element, namely an inner bearing ring of a template pivot bearing. This inner bearing ring can be removed upwards from the stencil pivot bearing, which can be opened by means of at least one portal segment, so that the cylinder stencil, in particular with a squeegee device inserted therein, can be lifted upwards out of the pivot bearing or vice versa. The template pivot bearing on at least one of the template ends is equipped with a rotary drive. The separation of the bearing receiving ring from the drive rotary bearing leads to the loss of a report, that is to say a defined rotational position of the template to be set for the application operation. In order to maintain this defined rotational position for the continued operation of the cylinder template after renewed setup, in particular after cleaning it, it is necessary that the fastening between the template receiving ring and the template end ring on the side of the drive pivot bearing for removing the cylinder template and for insertion is restored. For this purpose, the bayonet connection must be released or re-established by axial offset and relative rotation between the parts. The measures required for this are complex in terms of machine technology and handling. Receiving rings, on which bayonet-like closure elements are formed, are also made, for example WO 03/093013 A2 , DE 84 23 036 U1 and EP 0 533 053 A1 known.

In order to facilitate the connection of a cylinder template with a template receiving ring, template receiving rings with U-shaped receptacles are provided, which are only provided with radially protruding receiving elements in one half of the ring ( EP 0 533 053 A1 , Column 1, lines 22 to 31; AT 303 659 ; AT 296928 ). The cylinder template can be removed from the template receiving ring transversely to the template axis of rotation, preferably from above, or inserted therein. Template receiving rings with bayonet-like closure elements distributed around the ring edge have the advantage that the cylinder template is clamped evenly between the template pivot bearings over the entire template circumference. The template receiving rings, which are only provided with fastening elements on one half of the ring, on the other hand, do not allow a uniform attack over the entire circumference of the received template end ring for the axial tensioning of the cylinder template.

With regard to the set-up and operation of cylinder stencils, in particular in a rotary application device having a large number of printing / coating stations, a number of conditions and requirements must be observed and decisive. The cylinder template is a particularly fragile object, the template sleeve tends to deform, which must be met to achieve the highest precision requirements. Very different cylinder templates can be used in several stations. A particular influence to be avoided is caused, for example, by a screen torsion stiffness that is dependent on fine, coarse, full or partial area, in particular low torsional stiffness, by differences in the screen screen material, by considerably different loads on the cylinder screen with different squeegee devices working against them Different twisting behavior depending on one-sided or two-sided drive of the cylinder template, due to different end ring constructions that require different manipulations and due to different handling requirements when setting up with a squeegee device inserted into or removed from the cylinder template. The known recording systems only partially and incompletely meet all of these characteristics and requirements. Here, in departure from the known mounting systems bound to end ring constructions, it is essential to make the handling for setting-up considerably easier and to operate even particularly fragile cylinder templates which have different template sleeves and meet the highest precision requirements.

The invention is therefore based on the objectives of creating a template receiving ring for a receiving system, which has a uniform axial tensionability of the Cylinder template over its entire circumference and also a simple and defined set-up of the cylinder template, guaranteed, wherein a special separation or handling of bearing elements of a rotary bearing device provided for the rotary mounting of the cylinder template should be avoided.

The objectives are achieved according to the invention by the features of claim 1.

The objectives are achieved in connection with the features of the template receiving ring mentioned at the outset in that the template receiving ring is formed by two concentric, axially offset annular bodies which are joined together in a rotationally fixed manner, one annular body forming the receiving fastening means in the form of an openable fastening ring which, in the open state, forms an open ring receptacle with a through opening for free insertion and removal of the template end ring edge and, in the closed state, forms a closed ring receptacle which closes the through opening and has a fastening ring seat formed over the entire circumference of the ring, which forms the template Bounding end ring edge for rotationally fixed attachment, and wherein the other ring body forms the bearing connection ring, wherein the fastening ring is formed by a ring base element and at least one locking segment movable relative to the ring base segment, which opening and S forms a closing part for producing the open ring receptacle or the closed ring receptacle.

A rotary application device according to the invention, comprising at least one cylinder template with a first and second template end ring, which are attached to the ends of the cylinder template, a device frame on which a substrate carrier extending below the cylinder template is arranged, and a rotary bearing device with the axial ends of the cylinder template The associated template rotary bearings, which are arranged on the device frame and with which the template end rings for rotating the cylinder template are connected, are characterized in that the template end ring is attached to the associated templates at least on one axial end of the cylinder template by means of a template receiving ring according to the invention - pivot bearing is connected. The rotary bearing device is set up in such a way that a doctor device, which is arranged in the cylinder template for pushing through substance, can be inserted into or removed from the cylinder template. Devices known per se can be provided for setting up the doctor device with an associated substance feed tube, namely on the one hand for setting up the doctor device together with the cylinder stencil by lowering or lifting it out, or on the other hand separately of which by axially displacing the squeegee device in the cylinder stencil still located between the stencil pivot bearings.

A number of advantages are achieved with the measures according to the invention. The template receiving ring according to the invention combines the two ring bodies in such a way that, on the one hand, the cylinder template, independent of a template pivot bearing to which the template receiving ring can be connected, in the template receiving ring transversely to its ring axis - without any rotational and axial offset intervention by Fastening elements, and preferably from above, can be inserted and removed therefrom, and in such a way that, on the other hand, the template end ring can be enclosed in the template receiving ring over its entire circumference by means of the attachment ring seat. When the cylinder template is tensioned, the resulting axial pressure is distributed over the entire circumferential circumference of the mounting ring seat. This leads to a correspondingly uniform axial tensioning of the cylinder template over its longitudinal circumference. A peripheral part or section of the fastening ring seat is formed on the base segment and on the or each closure segment. In this case, the fastening ring seat can be continuously interrupted or circumferentially interrupted, ie divided into spaced ring sections. According to this requirement, the training is to be understood over the entire circumference of the ring. The border formed by the fastening ring seat is an at least axially positive-locking border which, as such, produces positive locking against movement in the axial direction. Unless a centering or connecting fit is additionally provided, this form-fitting connection permits relative rotation between the template receiving ring and the cylindrical template about their coaxial axes when the cylinder template is not tensioned. It is essential that a radial ring surface of the fastening ring seat or the casing, facing the bearing connecting ring, for example a closed circular ring edge with circumferential or intermittent circumferences, such as a radial web or radial webs, by means of the radial template end ring edge with axial Compressive force can be applied. The axial compressive force, which creates a frictional connection, is transmitted to the template end ring via the receiving ring in order to generate a tensile stress required for axial tensioning in the cylinder template. As such, the axial frictional connection causes a connection between the template receiving ring and the template end ring edge that is non-rotatable, that is to say that the parts block relative rotation to one another. As is known per se, the tensile force for axially tensioning the cylinder template can be achieved, for example, on a device frame or a clamping device arranged on a rotary bearing device can be generated in order to transmit the axial compressive force to the fastening ring seat, ie to act on it. The at least one locking segment is arranged and set up in such a way that the fastening ring in the open state has the opening passage that is opened so far that the template end ring edge has a diameter transverse to the ring axis of the template receiving ring, which coincides with the axis of rotation of the cylinder template used. can be placed in or removed from the annular space of the fastening ring. The ring base segment of the fastening ring can easily be in a bottom area, namely in the area of a substrate carrier, e.g. B. arrange a stored or guided transport or printing blanket on a device frame, so that the opened closure segment, the loading of the stencil receiving ring preferably from above, and thus allows particularly simple and time-saving setup. The bearing connecting ring is designed and set up in such a way that the template receiving ring can be connected to the assigned template rotary bearing with a uniform force distribution over its entire ring circumference. The bearing connection ring is expediently designed as a full ring.

The rotationally fixed union of the fastening ring and the bearing connection ring is generally determined in that the two rings are secured against relative rotation to one another, for example by means of a material connection, non-positive connection or positive connection, and are connected to one another to form a unit. The rotationally fixed connection of the two ring bodies can, in particular by means of a relative rotation-blocking positive connection, be set up in such a way that the fastening ring and the bearing connection ring are arranged to be axially movable relative to one another and are connected to one another. For example, a spring means can be inserted between the two rings in order to spring the rings relative to one another in the axial direction or to generate axial spring force. Without such an intermediate, variable, relative axial position of the receiving fastening ring and the bearing connecting ring, which determines and delimits spring means, the parts of the receiving fastening ring are axially fixed, that is to say connected to one another without movement.

According to the invention, a receiving system is achieved with the template receiving ring, in which, in summary, the cylinder template can be inserted transversely to the ring axis, in particular from above, with an over to tension the cylinder template the template end ring ensures an even distribution of axial clamping force. In particular, a bayonet connection or a connection that distorts the axial tension over the circumference of the template is eliminated. The template receiving ring according to the invention or the receiving system set up with it can be used for any rotary / circular template application machine regardless of the type of rotary bearing of the cylinder template, for example for closed or open storage, and regardless of the type, arrangement and attachment of a clamping device for the axial Insert clamping of the cylinder template.

The stencil receiving ring according to the invention also has the advantage that it can be used for fastening stencil end rings, the stencil end ring edge of which is designed for mounting systems with bayonet-type fastening elements, such stencil end ring edges being provided with distributed interruptions in the form of recesses along their circumference. A cylinder template with a circumferentially closed template end ring edge can be particularly advantageously connected to the template receiving ring. The template end ring edge is then closed such that recesses z. B. for bayonet-type rotational offset projections.

The term "axial" is understood in connection with parallel to or in the direction of the ring axis of the template receiving ring or an axis coaxial with the ring axis. The term "axial" also refers to parts or surfaces which extend in the axial direction and in which the ring axis or a coaxial axis lies. The term "radial" relates to directions that start from an associated axis and are perpendicular to this axis. It also refers to parts or surfaces that extend perpendicularly and radially with respect to an axis thereto. "Ring" is basically understood to be a circular ring. However, special cases are not excluded which, if the essential inventive functions mentioned are observed, deviate from the circular ring shape, for example with straight or polygonal ring segments or sections.

The bearing connecting ring and the fastening ring are preferably captively combined in one component which is handled and handled in one piece. The ring base segment and the bearing connecting ring are preferably formed in one piece and are thereby axially fixed to one another. The or each movable closure segment is preferably integrated into the fastening ring in such a way that the together ring body formed with the ring base segment in the closed state has a projection-free, smooth outer surface.

The bearing connecting ring of a template receiving ring according to the invention can be designed universally in order to establish a connection with the associated rotary bearing. One embodiment consists in that the bearing connection ring is designed as a connection part which can be connected in a rotationally fixed manner to a rotatable pivot bearing element of the template pivot bearing. Such a connecting part can be connected, for example, to the rotatable pivot bearing element of the template pivot bearing by means of a pin connection which preferably distributes the axial connecting or transmission force over the circumference of the ring. Another design is that the bearing connection ring has a pivot bearing element which can be inserted into the template pivot bearing and is rotatably mounted there in the form of a bearing ring. It remains essential for the invention that the cylinder template is set up by means of the template receiving ring according to the invention to the type of mounting, namely in particular to a closed mounting or an open or openable mounting, into which a bearing ring of the template mounting ring extends transversely to the axis of rotation of the bearing can be used or removed, does not arrive. In any case, according to the invention a part of the template receiving ring which does not engage or does not engage in a rotary bearing is designed as a fastening ring seat into which the template end ring edge can be inserted for transmitting axial connecting force which is uniformly distributed over the ring circumference is.

At least one closure segment that can be moved, for example, by sliding or preferably pivotable about an axis-parallel pivot axis, can be mounted on the fastening ring and / or the bearing connection ring. In particular, storage of at least one locking segment on the fastening ring, preferably on the base segment, is provided if the fastening ring and the bearing connection ring are arranged to be axially movable relative to one another by means of the spring means mentioned.

Preferably, at least one said movable closure segment for opening and closing the fastening ring is pivotably connected to the bearing connecting ring by means of a pivot bearing, in particular about a pivot axis parallel to the ring axis of the template receiving ring. Such a pivot bearing also provides an axially fixed connection between the mounting ring and the bearing connection ring. A particularly advantageous design of the swivel linkage consists in that at least one locking segment is designed as a two-armed locking lever, which has a lever arm outer segment that opens and closes the fastening ring for inserting and removing the template end ring, and a lever arm that pivots into the inner region of the fastening ring when the lever arm outer segment is opened -Inner segment, wherein the lever arm inner segment forms a stop element in the inner region, against which the template end ring edge comes to rest when inserted, whereby the lever arm outer segment can be pivoted into the closed state closing the fastening ring. It is achieved that the handling of the cylinder template for setting up is particularly simplified. The attachment ring closes automatically simply by resting or resting the template end ring or the template end ring edge on and against the stop element.

The lever arm inner segment can hold the lever arm outer segment in the closed state and thus the fastening ring in particular without additional closing or locking means in the closed state when the template end ring edge is in contact therewith. The lever arm inner segment then forms a locking means. Instead or in addition, a locking means which can be set from an unlocked state into a locked state and which keeps the fastening ring closed in the locked state can be arranged on the circular template receiving ring. Any locking means that detachably fixes at least one closure segment can be considered. A preferred design consists in that the locking means is equipped with at least one locking element, against which the template end ring edge of a template end ring inserted in the round template receiving ring comes to bear in order to bring about the locking state. The locking element can be mounted on an associated locking segment and can be guided so as to be axially movable against spring force, whereby it can be axially displaced against the spring force when the cylinder template is clamped axially by the template end ring edge resting against the locking element in a position which brings about the locking state and engages in the bearing connection ring is. The locking element can expediently be formed by a locking pin with a locking head, to which an axial locking hole is assigned in the closure segment, and with a locking foot which forms part of the fastening ring seat and which can be displaced axially by the abutment of the template end ring edge to effect the locking state against the spring force , wherein the locking head from a position belonging to the unlocked state against the spring force to The lock can be moved into the locking hole to produce a locking position. The locking foot can be displaced and the locking position can be established by pulling the template onto the template holder ring.

A preferred design is that the fastening ring, preferably in a symmetrical arrangement, has two locking levers which can be moved away from one another to open the fastening ring and can be moved towards one another to close the fastening ring.

Preferably, a circular arc part of the fastening ring is divided into the outer lever arm segment and the inner lever arm segment, the circular arc part forming the non-protruding, uniform ring body in the closed state of the fastening ring together with the ring base segment, in particular together with another such circular arc part.

In order to coordinate the swivel range of the lever arm outer segment with the swivel range of the lever arm inner segment, on the one hand with regard to the passage opening adapted to the outer diameter of the template end ring edge and on the other hand with regard to an optimally acting system of the lever arm inner segment for closing and opening the passage opening, it is advantageous that the lever length, viewed as the chord length of the associated arc length, of the lever arm inner segment, in particular in the version with symmetry arrangement, is less than one third of the chord length of the closure segment and / or the pivoting linkage of the closure element is provided in the region of the ring half having the base segment.

The fastening ring seat is expediently formed by a circumferential radial seat groove which has a radial ring edge which, in the axial direction, is designed for positive engagement against the radial end ring edge of the template, the radial ring edge being continuous or interrupted on the template receiving ring , ie with circumferentially distributed radial projections, is formed on the ring base segment and the or each closure segment.

Although the template end ring edge which axially encloses the fastening ring seat can be placed in the non-positive, rotationally fixed connection solely by axially tensioning the cylinder template or vice versa by releasing the cylinder template from the non-rotating connection, it is advantageous that the fastening ring seat has at least one has an axial fastening ring connecting element which is assigned to a corresponding axial end ring connecting element of the template end ring and which contributes to the rotationally fixed connection between the fastening ring and the template end ring by means of a relative rotational movement blocking positive engagement. A centering element formed on the ring base segment, for example in the form of an axial dowel pin, is advantageously set up with an associated fitting recess formed on the stencil end ring, which defines a reproducible, exact position of use of the stencil end ring in the fastening ring. The centering element can also be provided as a previously mentioned fastening ring connecting element.

The rotary application device is particularly advantageously set up such that each template end ring is connected to the associated template pivot bearing by means of a template receiving ring according to the invention.

The rotary application device can be equipped with any clamping device which is set up for releasable axial clamping of the cylinder template. For example, the cylinder template can be tensioned by means of a clamping device that is separate from the template pivot bearings, without this being to be understood as limiting. The rotary application device then has a clamping device arranged on the device frame, by means of which the template rotary bearings for clamping the cylinder template can be spaced apart from one another parallel to the template rotation axis and can be fixed in the clamping position and vice versa for removing or inserting the cylinder template from the clamping position.

Subclaims are directed to the above-mentioned and other expedient and advantageous embodiments of the invention. Only particularly expedient and advantageous training forms and possibilities are described in more detail with reference to the following description of the exemplary embodiments shown in the schematic drawing. Each described individual or detailed design within an exemplary embodiment is a structurally independent detailed example for other designs and designs which are not or not fully described and are covered by the invention to understand. In particular, designs or features that have overarching independent relevance are highlighted with the indication "general".

Fig. 1A bis 1C

in axonometrischen Ansichten einen Schablonen-Aufnahmering im Öffnungszustand, in einem Funktions-Zwischenzustand sowie im Schließzustand, jeweils mit einer zugeordneten, aufzunehmenden Zylinderschablone;

Fig. 2

in axonometrischer Ansicht eine Rotations-Auftragungsvorrichtung mit einem Schablonen-Aufnahmeringe aufweisenden Aufnahmesystem;

Fig. 3

in axonometrischer Ansicht einen Schablonen-Aufnahmering im Schließzustand ohne eingesetzte Zylinderschablone und

Fig. 4

in Schnittansicht und im Ausschnitt einen Teil eines Arretiermittels des Schablonen-Aufnahmerings in Fig. 3.

Show it

1A to 1C

in axonometric views, a template receiving ring in the open state, in an intermediate functional state and in the closed state, each with an associated cylinder template to be received;

Fig. 2

in axonometric view, a rotary application device with a receiving system having template receiving rings;

Fig. 3

in the axonometric view a template receiving ring in the closed state without an inserted cylinder template and

Fig. 4

in sectional view and in the cutout a part of a locking means of the template receiving ring in Fig. 3 .

One in Fig. 2 The rotary application device 5 shown comprises a bearing device 7 which is arranged on a device frame 51 which is only partially shown and which has stencil rotary bearings 71 lying opposite one another in a rotary bearing axis 50. The stencil rotary bearings 71 together with bearing bodies 52 on which they are arranged form station or print heads. A bearing beam 53 of the device frame 51 extends parallel to the pivot bearing axis 50.

For example, one of the two stencil pivot bearings 71 is namely the one in FIG Fig. 2 Template rotary bearing 710 shown on the left, equipped with a rotary drive, not shown. This rotary drive bearing can be axially fixed to the bearing beam 53, while the other template rotary bearing 71, which is arranged on an operating side of the rotary application device 5, can be axially displaceably mounted parallel to the rotary bearing axis 50. The bearing bodies 52 are arranged vertically on the support bar 53, that is to say adjustable in height, above a substrate carrier 54. For example For example, a tensioning device 8, indicated by dash-dotted lines and arranged on the support bar 53, can be provided in order to axially distance the template rotary bearings 71 for axially tensioning a cylindrical template (circular template) 6 which can be rotated about the rotary bearing axis 50 by means of the template rotary bearings 71. Any clamping device can be provided, by means of which tensile force Z can be exerted on the template ends for the axial clamping of the cylinder template. The invention is not restricted to a single-sided or double-sided stencil drive.

The template rotary bearings 71, which are designed in particular as radial bearings with a running sleeve and in the form of roller bearings or slide bearings, support the cylinder template 6 at their ends, the cylinder template 6 in the equipped operating state around its template rotary axis 60 coinciding with the rotary bearing axis 50 by means of the Rotary drive is rotatable at least one drive rotary bearing.

At the device location 51, the substrate support 54 forming a substrate support surface is arranged, for example in the form of a transport blanket which extends and moves transversely to the cylinder template 6 and which guides a surface substrate 59, indicated only by dash-dotted lines, to be provided with application substance, past the cylinder template 6.

In the interior of the cylinder template 6 there is also a doctor device 55, indicated only by dash-dotted lines, by means of which the coating or printing substance is pressed through the rotating cylinder template 6 in order to print or coat the surface substrate 59. Printing or coating can be carried out very differently in interaction with the cylinder template 6, the application substance and the substrate. B. also concerns impregnation.

The rotary application device 5 is put into operation in that the cylinder template 6 is axially tensioned and lowered to the application operation by means of the bearing body 52 and brought against the surface substrate 59.

How out Fig. 2 As can be seen, the cylinder template 6 is received in a template receiving ring 1 for storage by means of the template pivot bearings 71 at each end. The stencil receiving ring 1 is an essential means for each of the stencil ends to be stored with the associated stencil rotary bearing 71 to connect. At each end, the cylinder template 6 is equipped with a template end ring 61 which has a template end ring edge 611 which can be detachably connected to the template receiving ring 1. It is important that this connection is easy to handle and causes an optimal circumferential distribution of axial compressive force which acts on the template end ring edge 611 when the cylinder template 6 is tensioned.

Out 1A to 1C the construction of a template receiving ring 1 and the functions and effects achieved thereby.

The template receiving ring 1 is a component which is formed by two concentric ring bodies which are combined with one another in a rotationally fixed manner, axially offset and are firmly spaced apart. One of the ring bodies forms a closed circular bearing connection ring 2 for connection to an associated associated template rotary bearing 71 1A to 1C the bearing connecting ring 2 is a connecting part 21 having a centering edge 22. In general, such a connecting ring has connecting elements which are preferably arranged uniformly distributed on the circumference. In the exemplary embodiment, connecting elements 211 in the form of pins or screws arranged at a circumferential distance of 120 ° are provided on the connecting part 21. By means of such a connection, the bearing connection ring 2 is flanged to a rotatable part, for example an inner bearing ring of the stencil rotary bearing 71. The second ring body is designed as a special fastening ring 3. This is a receptacle fastening means 30 with which the template end ring edge 611 of the template end ring 61 can be detachably connected in a special way to the template receiving ring 1.

In the exemplary embodiment, the receiving fastening ring 3 has a base ring-side base segment 31 which is formed in one piece with the bearing connecting ring 2. The mounting ring 3 has two further, mirror images arranged and formed ring parts, which are formed by pivotable closure segments 32. Each locking segment 32 is by means of a pivot bearing 37, as in FIG Fig. 3 to see a pivot axis 320 parallel to the central ring axis 10 of the template receiving ring 1 articulated to the bearing connection ring 2. In the closed state, the receiving fastening ring 3 is determined by a closed ring, which is composed of the ring base segment 31 and the two closure segments 32, like this in 1C is shown. The (closed) receiving fastening ring 3 and the bearing connecting ring 2 generally have an inner diameter and an outer diameter as well as circular ring shapes which correspond to one another or are essentially the same, the parts of the receiving fastening ring 3 having a special stepped radial inner groove over the entire inner circumference of the ring , namely a seat groove 351 are formed, which forms a fastening ring seat 35. How out 1A to 1C can be seen, the fastening ring seat 35 generally has a circumferential radial ring edge 352 on its side facing away from the bearing connection ring 2. The circumferential radial seat groove 351 is generally worked into the ring base segment 31 on the inner circumference of the receiving fastening ring 3 and correspondingly into the closure segments 32.

In the exemplary embodiment, the radial ring edge 352 and also the radial seat groove 351 are provided without interruption for bordering the template end ring edge 611. The radial ring edge or the seat groove can also be provided all around in such a way that they have radial projections or sections or corresponding recesses or interruptions distributed over the entire circumference. In any case, the seat groove is set up in such a way that it positively surrounds the template end ring edge over the entire ring circumference.

It is advantageous if, in general, each closure segment 32, such as in FIG 1A to 1C is shown on the side facing the bearing connection ring 2 with a collar ring edge 323 which axially overlaps the bearing connection ring 2 on the circumference, such that the template receiving ring 1, when the receiving fastening ring 3 is closed, on the circumference is sealed on the outside.

In the embodiment according to 1A to 1C Each locking segment 32 is divided into a lever arm outer segment 321 and a lever arm inner segment 322 with the pivot axis 320 articulating it. In the exemplary embodiment, the arc length or a corresponding chord length of the lever arm inner segment 322 is less than a third of the arc length or a corresponding chord length of the locking segment 32. Receiving ring 1. In particular with this arrangement, the two closure segments 32, which are arranged with mirror symmetry, can be opened to an open state of the receiving fastening ring 3 with a circumferential side opposite the ring base segment 31 Bring free passage 33. The through opening is matched to the circular diameter of the template end ring edge 611, such that the template end ring edge 611 is circumferential, in particular as in FIG 1A to 1C shown, can bring vertically from above into the interior of the mounting ring 3. How out 1A to 1C can be seen, the handling for setting up is generally such that the ring axis 10 of the template receiving ring 1 and the template axis of rotation 60 of the cylinder template 6 are in a common, in particular vertical plane, and these axes run parallel.

In general, in the embodiment with a pivot linkage, at least one or more locking segments can each be formed by a one-armed lever, so that an inner lever arm segment is then omitted.

While the lever arm outer segments 321 pivoting outward to open on the template receiving ring 1 produce the through opening 33, the lever arm inner segments 322 form radial contact elements on the inside of the receiving fastening ring 3, on which the template end ring edge 611 when the template end ring 61 is inserted Facility comes in like this Figure 1B is shown. The cylinder template 6, which rests on the lever arm inner segments 322 with the template end ring 61 or the template end ring edge 611, completely closes the receiving fastening ring 3. In general, the inner diameter of the receptacle fastening ring 3 can be dimensioned to match the outer diameter of the template end ring edge 611 such that the receptacle fastening ring 3 is automatically kept closed when the cylinder template 6 is inserted and then tensioned, the lever arm inner segments 322 being a locking means 37 form. Instead of or in addition, any other locking means can be provided that releasably keeps the fastening ring 3 closed. A special design is shown below using 3 and 4 described.

An advantageous general design consists of, as in the example in particular 1A to 1C It can be seen that the outer diameters of the two ring bodies of the template receiving ring 1 are formed with at least substantially the same or corresponding outer diameters in such a way that an overall body of the template receiving ring 1 is obtained which is uniform in terms of the outer shape. In connection with this and also in general, as in particular from Fig. 1c and Fig. 3 can be seen, form the closure segments 32 and the ring base segment 31 in the closed state of the mounting fastening ring 3 has a closed, non-protruding outer circumferential surface which corresponds to the non-protruding outer circumferential surface of the bearing connection ring 2.

As already described, the template receiving ring 1, as in FIG 1C shown, connected cylinder template 6, when the bearing connection ring 2 is connected to the associated template rotary bearing 71, 710, exerted tensile force Z in the axial direction by means of a tensioning device, so that the template end ring edge 611, which in the exemplary embodiment is formed by an uninterrupted full ring is non-positively pressed over the entire circumference against the radial ring edge 352, which is also closed in the ring, or against a similarly acting, interrupted radial ring edge of the receiving fastening means 30. Ring sections of an interrupted ring edge can be matched to corresponding ring sections of an interrupted template end ring edge. In any case, there is a rotationally fixed connection between the cylinder template 6 and the template receiving ring 1 with a uniform force distribution over the entire ring circumference.

How out 1A and 1B an axial dowel pin 360 is formed on the bottom of the ring base segment 31, to which a corresponding fitting recess 612 for positive engagement is assigned on an inner step edge 610 of the template end ring edge 611. The cylinder template 6 is set by this connection in a precisely defined rotational and reference position. The dowel pin 360 can also form an axial fastening ring connecting element 36, which can be attached in the same form to further circumferential locations of the receiving fastening ring 3 in order to provide rotationally fixed positioning by positive locking between the cylinder template 6 and the template receiving ring 1.

In Fig. 3 is the template receiving ring 1, as in the embodiment according to 1A to 1C is provided, shown in rear view, that is, in the view of the side facing a cylinder template 6. There are pivot bearings 38 which produce the pivot linkage of the closure segments 32 about the pivot axes 320 on the bearing connecting ring 2. The pivot bearing 38 can, as shown, be formed by means of an articulated screw. Fig. 3 also shows a locking means 9 arranged on the circular template receiving ring 1, which can be reversibly set from an unlocked state into a locked state. The locking means 9 comprises a pair of locking elements 90, which are each arranged in mirror image fashion between an associated lever arm outer segment 321 and the bearing connecting ring 2 in the upper third of the template receiving ring 1 in accordance with the symmetry arrangement of the closure segments 32. in 3 and 4 the locking means 9 is in the unlocked state. In this state, in the closed template receiving ring 1, the template end ring edge 611 can have a cylindrical template 6, as in FIG 1C shown used, but without the cylinder template 6 is in the axially clamped state.

Using the detailed representation in Fig. 4 The arrangement, design and function of the locking element 90 are described.

The locking element 90 is an axially aligned guide pin with a locking shaft 91, which axially spaces a locking head 92 and a locking foot 93. The guide pin is mounted in an axial through-hole in the wall of the lever arm outer segment 321 so that it can move axially back and forth, the locking shaft 91 being passed through a pressure-resistant locking spring 94 which is between the locking head 92 and one on the lever arm outer segment 321 supporting recessed ring edge is caught in the through hole. The locking foot 93 is designed in the form of a plate-like tab, which forms a component of the radial ring edge 352 which can be moved axially by means of the guide bolt. The locking foot 93 is set up in its range of motion for partial and complete engagement in an associated matching locking recess 96 in the radial ring edge 352. In the in Fig. 4 Unlocked state shown, in which the locking spring 94 is relaxed, the locking foot 93 is only partially in the locking recess 96, wherein it forms an axially projecting on the radial ring edge 352 of the mounting ring seat 35 abutment or stop element. In this state, the locking head 92 is free of locking in a countersunk hole 97 which is introduced into the outside end face of the bearing connection ring 2. It is thereby achieved that the outer lever arm segment 321 can be pivoted from the illustrated closed state into the open state or vice versa from this into the closed state.

The locking state can be established in that, when the fastening ring 3 is in the closed state, the locking foot 93 is completely displaced into the locking recess 96 against the pressure force of the locking spring 94. As a result, the locking head 92 arrives in a form-fitting manner into a locking hole 95 made in the wall of the bearing connection ring 2, to which the countersunk hole 97, which is widened in comparison, connects, so that the lever arm outer segment 321 is in the blocking position, in which it is blocked against swinging out of its closed position.

The displacement of the locking foot 93 from the projection position into the locking recess 96 is brought about and controlled by means of a template end ring edge 611 inserted into the fastening ring seat 35. The fastening ring seat 35, namely in the exemplary embodiment the stepped seat groove 351 delimited by the radial ring edge 352 and the groove edge 353, is set up with an axial clearance which is so large that the template end ring edge 611 is in the opened state of the template receiving ring 1 and in The state of the locking foot 93 projecting slightly on the radial ring edge 352 can be inserted freely into the fastening ring seat 35 and the closure segments 32 can be fully closed. As described, a cylinder template 6 is tensioned in that the template receiving ring 1 is displaced in the axial direction Z by means of a clamping device 8. As a result, the template end ring edge 611 pushes the locking foot 93 into the locking recess 96, with the result that in each case the closed state of the closure segments 32 is locked when the cylinder template 6 is tensioned and vice versa is unlocked when the cylinder template is relaxed.

Claims (20)

1. Cylindrical-screen holding ring (1), configured for connecting a cylindrical screen (6), by means of which substance can be transferred to a flat substrate (59) supported by a substrate carrier (54), with a pivot bearing device (7) arranged on an apparatus frame (51) for pivotably supporting the cylindrical screen (6) about a screen axis of rotation (60), wherein the cylindrical-screen holding ring (1) is formed by a bearing connection ring (2), which can be connected to a screen pivot bearing (71) of the pivot bearing device (7) for pivotable support thereof, and by a holder mounting means (30), which is designed for releasable, non-rotatable connection to a screen end-ring edge (611) of a screen end-ring (61) attached to the cylindrical screen (6), wherein the holder mounting means (30) can be acted upon by axial force for axially clamping the cylindrical screen (6), characterised in that the cylindrical-screen holding ring (1) is formed by two concentric, axially offset annular bodies, which are non-rotatably joined together, wherein the one annular body forms the holder mounting means (30) in the form of an openable mounting ring (3), which in the opened state forms an open ring holder with a through-hole (33) for freely inserting and removing the screen end-ring edge (611) and which in the closed state forms a ring holder, which by closing the through-hole (33) is consequently closed, said ring holder having a mounting ring seat (35) formed around its entire circumference, said mounting ring seat enclosing the screen end-ring edge (611) for non-rotatable mounting, and wherein the other ring body forms the bearing connection ring (2), wherein the mounting ring (3) is formed by a ring base segment (31) and at least one closure segment (32), movable in relation to the ring base segment, which forms an opening and closing part to produce the open ring holder or the closed ring holder.
2. Cylindrical-screen holding ring according to claim 1, characterised in that the mounting ring seat (35) is formed by a radial ring edge (352), which is closed circumferentially.
3. Cylindrical-screen holding ring according to claim 1, characterised in that the mounting ring seat (35) is formed by a radial ring edge (352), which has interruptions circumferentially.
4. Cylindrical-screen holding ring according to any one of claims 1 to 3, characterised in that the ring base segment (31) and the bearing connection ring (2) are formed integrally.
5. Cylindrical-screen holding ring according to any one of claims 1 to 4, characterised in that at least one said closure segment (32) is pivotably hinged by means of a pivot bearing (38) for opening and closing the mounting ring (3).
6. Cylindrical-screen holding ring according to claim 5, characterised in that at least one said closure segment (32) is designed as a two-armed locking lever which has a lever arm outer segment (321) opening and closing the mounting ring (3) for inserting and removing the screen end-ring (61) as well as a lever arm inner segment (322) which pivots into the inner region of said mounting ring (3) on opening the lever arm outer segment (321), wherein the lever arm inner segment (322) forms an abutment element in the inner region, against which the screen end-ring edge (611) comes to rest when inserted, as a result of which the lever arm outer segment (321) is pivotable in the closed state which closes the mounting ring (3).
7. Cylindrical-screen holding ring according to claim 6, characterised in that the lever arm inner segment (322) holds the lever arm outer segment (321) in the closed state when the screen end-ring edge (611) is in contact with said lever arm inner segment.
8. Cylindrical-screen holding ring according to claim 6 or 7, characterised in that the mounting ring (3) has two said closure levers, the lever arm outer segments (321) of which can be moved away from each other for opening the mounting ring (3) and towards each other for closing the mounting ring (3).
9. Cylindrical-screen holding ring according to any one of claims 1 to 8, characterised in that the mounting ring seat (35) has a radial seat groove (351) which is designed to surround the screen end-ring edge (611).
10. Cylindrical-screen holding ring according to any one of claims 1 to 9, characterised in that the mounting ring seat (35) has at least one axial mounting-ring connecting element (36) which is associated with a corresponding end-ring connecting element of the screen end-ring (61) and is configured to make a non-rotatable connection between the mounting ring (3) and the screen end-ring (61) by means of positive locking.
11. Cylindrical-screen holding ring according to claim 10, characterised in that the axial mounting-ring connecting element (36) defines a reproducible insertion position of the screen end-ring (61) in the mounting ring (3).
12. Cylindrical-screen holding ring according to any one of claims 1 to 11, characterised in that a locking means (9) which can be set from an unlatched state to a latched state is arranged on the cylindrical-screen holding ring (1), said locking means holding the mounting ring (3) closed in the latched state.
13. Cylindrical-screen holding ring according to claim 12, characterised in that the locking means (9) is configured with at least one locking element (90) against which the screen end-ring edge (611) of a screen end-ring (61) inserted in the cylindrical-screen holding ring (1) comes to rest to bring about the latched state.
14. Cylindrical-screen holding ring according to claim 13, characterised in that the locking element (90) is supported on an associated closure segment (32) and is guided so as to be axially movable against spring force, wherein the locking element (90) can be axially displaced against the spring force into a position lockingly engaging in the bearing connection ring (2), which brings about the latched state, due to the screen end-ring edge (611) resting on the locking element (90) during axial clamping of the cylindrical screen (6).
15. Cylindrical-screen holding ring according to claim 14, characterised in that the locking element (90) is formed by a locking pin with a locking head (92), which is associated with an axial locking hole (95) in the closure segment (32), and a locking foot (93), forming a component of the mounting ring seat (35), which is axially displaceable against the spring force to bring about the latched state due to contact of the screen end-ring edge (611), wherein the locking head (92) can be moved against the spring force from a free position associated with the unlatched state into the locking hole (95) to bring about latching to produce a locked position.
16. Cylindrical-screen holding ring according to any one of claims 1 to 15, characterised in that the bearing connection ring (2) is designed as a connection part (21) which can be non-rotatably connected to a rotatable pivot bearing element of the screen pivot bearing (71).
17. Cylindrical-screen holding ring according to any one of claims 1 to 16, characterised in that the bearing connection ring (2) has a rotatable pivot bearing element which can be inserted into the cylindrical-screen pivot bearing.
18. Rotary application apparatus (5), comprising at least one cylindrical screen (6) with a first and second screen end-ring (61) which are attached at the axial ends of the cylindrical screen (6), an apparatus frame (51) on which a substrate carrier (54) extending below the cylindrical screen (6) is arranged, and a pivot bearing device (7) with the screen pivot bearings (71) associated with the axial ends of the cylindrical screen (6), which screen pivot bearings are arranged on the apparatus frame (51) and with which the screen end-rings (61) are connected for pivotably supporting the cylindrical screen (6), wherein at least one screen end-ring (61) is connected to the associated screen pivot bearing (71) of the pivot bearing device (7) by means of a cylindrical-screen holding ring (1) according to any one of claims 1 to 14.
19. Rotary application apparatus according to claim 18, characterised in that each screen end-ring (61) is connected to the associated screen pivot bearing (7) of the pivot bearing device (71) by means of a said cylindrical-screen holding ring (1).
20. Rotary application apparatus according to claim 18 or 19, characterised in that the rotary application apparatus (5) has a clamping device (8) which is configured for releasable axial clamping of the cylindrical screen (6).

Images