DE102016005298B4 - Device for applying free-flowing media to moving surfaces - Google Patents

Abstract

Device for applying flowable media to the circumference of a roller (10) or to a moving web, by means of an elongated transfer unit lying transversely to the direction of movement on the moving surface, which has a transfer head with at least one chamber for receiving a flowable medium and for transfer has the surface,whereby elongate structural parts of the transmission unit are connected to one another or to a supporting part (11) with the aid of a plurality of positively and/or non-positively acting connecting elements,wherein the connecting elements are connected due to a relative movement of the parts thereof by displacement of the connected, elongate structural parts of the transmission assembly, can be moved alternatively into an anchoring position and into a release position in which the interconnected connecting members can be separated from one another,characterized in that a connection between the connecting members bayonet-like with a retaining bolt (35) with an anchoring head (36) on the one hand and an elongated hole (37) with variable contour or transverse dimensions on the other hand, the retaining bolt (35) with the anchoring head (36) entering the elongated hole (37), such that with a corresponding relative position on the one hand an anchoring of the elongated construction parts and on the other hand an exit of the retaining bolt (35) including the anchoring head (36) from the slot (37) for separating the interconnected elongated construction parts.

Description

The invention relates to a device for applying media to a moving surface, having the features of the preamble of claim 1.

The device or application head forms at least one chamber for receiving the medium and transferring it to the circumference of the rotating (raster) roller. The chamber is provided with sealing elements, which are generally referred to as doctor blades and which (deformably) abut the circumference of the roller or are fixed at an adjustable distance from the circumference of the roller.

In a device according to DE 199 26 956 A1 the application head is designed with two chambers separated from each other by a central seal or scraper - antechamber, main chamber. The antechamber has a seal or a doctor blade on the free side. Likewise, the main chamber is delimited on the outside by a squeegee.

A device with the features of the preamble of claim 1 is in DE 199 49 103 A1 described. Similar devices are available through the EP 1 124 690 B1 and DE 20 2005 019 482 U1 revealed. The invention deals with the further development of such or similar application headers for flowable media. In particular, the invention is about easier handling during maintenance and cleaning measures.

To solve this problem, the device according to the invention is characterized by the features of claim 1.

According to the invention, the elongated parts of the applicator head, in particular carrying elements for the squeegee, can be removed quickly and easily from the overall device for cleaning or maintenance purposes by central, joint release of connecting means. The connecting means used for this purpose, which act by shifting, replace the previously used screw bolts as connecting means, a large number of which must be actuated in each case in order to release the organs.

The individual, elongated components of the application head are, in particular, a central supporting body, to which a carrier for a seal or a blade, preferably a central seal, is attached on the one hand. Furthermore, a carrier or support body for a (central) sealing element or a doctor blade - is detachably arranged.

Common for a single design part of the application header
operable connecting and retaining members consist of a recess - slot - entering anchoring piece or an anchoring head, which is moved by displacement in the anchoring position or vice versa in the exemption within the slot and thereby in one or
other end position reached. The anchoring elements are preferably designed in such a way that during the movement into the anchoring position, an increasing tension or fixing force is effective due to coordinated, obliquely directed supporting surfaces and counter surfaces. In the opposite position - decoupling position - the anchoring organs release the structural part in question, in particular in such a way that the anchoring head is exposed in the correspondingly designed slot or can emerge from the slot.

A plurality of such anchoring members or bolts are arranged on each elongate structural part of the applicator head, such that release or anchoring takes place by longitudinal displacement. The anchoring bolt is preferably arranged on a stationary support part and the recess or slot is attached to the structural part that is to be released, in particular that can be moved.

Alternatively, the anchoring means themselves can be arranged to be displaceable, so that when the connection is released, only the anchoring means are adjusted, but the structural parts of the application head do not have to be adjusted.

• 1 einen Antragskopf in perspektivischer Darstellung,
• 2 einen Querschnitt durch den Antragskopf gemäß 1 in vergrößertem Maßstab,
• 3 einen Querschnitt durch ein Detail des Antragskopfes in nochmals vergrößertem Maßstab,
• 4 eine weitere Querschnittsvergrößerung eines Teils des Antragskopfes,
• 5 ein einzelnes Formstück bzw. eine Tragschiene als Teil des Antragskopfes in perspektivischer Darstellung,
• 6 eine Einzelheit bzw. ein Teilstück der Einzelheit gemäß 5, in Draufsicht, in vergrößertem Maßstab,
• 7 die Einzelheit gemäß 6 im Längsschnitt bei vergrößertem Maßstab,
• 8 die Einzelheit gemäß 7 in veränderter Relativstellung, nochmals vergrößert.

Further features and details of the invention are presented below with reference to drawings and explained in more detail. It shows:

• 1 an application header in a perspective view,
• 2 a cross section through the application header according to 1 on an enlarged scale,
• 3 a cross-section through a detail of the application head on a larger scale,
• 4 a further cross-sectional enlargement of part of the application header,
• 5 a single fitting or a mounting rail as part of the application header in a perspective view,
• 6 a detail or part of the detail according to 5 , in top view, on an enlarged scale,
• 7 the detail according to 6 in longitudinal section on an enlarged scale,
• 8th the detail according to 7 in a different relative position, enlarged again.

1 shows a perspective view or a perspective top view of a unit for applying free-flowing media such. B. glue on a surface, in particular on a (foil) web, approximately along the lines of DE 199 26 956 A1 . The medium or the layer formed from it is applied to a transfer roller 10, which is preferably designed as an anilox roller. This transfers the medium to the film web (not shown).

It is about the design of the coating or application head, which is assigned to the circumference of the transfer roller 10 in a predetermined relative position (below). The elongate application head has a support, subsequent main support 11, which is detachably mounted on a support frame 12 by means of bolts or the like. This unit extends in the longitudinal or axial direction of the transfer roller 10.

On the main support 11 are attached organs that determine the exact coating on the circumference of the transfer roller 10 (for transfer to the film). At least one (pressure) chamber for the medium is provided for this purpose. The embodiment shown works according to the double-chamber principle. The material to be applied is accordingly fed to two chambers, a main chamber 13 and an antechamber 14. Medium is fed separately to both chambers 13, 14, in this case via lines or channels—main channel 15 and antechamber 16. The former leads into the main chamber 13, the latter into the antechamber 14. The channels or lines 15, 16 lead to their own sources and supply the associated chambers 13, 14 with different amounts of medium, preferably at different pressures.

The main support 11 in the form of an elongated structural part serves in particular as a holder for organs of the transmission device. A holding unit 17 is a carrier for a preferably adjustable sealing element, in particular an (adjustable) central seal 18 for delimiting the chambers 13 and 14 from one another. The actual sealing element is a squeegee--middle squeegee 19--in the form of a thin-walled blade. The middle doctor 19 is positioned with one end edge in such a way that there can be (light) contact with the periphery of the transfer roller 10 .

The holding unit 17 is constructed in a special way, consists of a support body 20, preferably in the form of an elongated structural part. The supporting body 20 is connected to the main support 11, in particular by being arranged in a channel-like depression 21 approximately in the longitudinal center of the main support 11. The supporting body 20, which is profiled in cross section, rests on an adjusting base surface 22 of the depression 21, preferably with alignment by form-fitting adjusting means. A web-like projection 23 is preferably arranged on the underside of the supporting body 20 and enters a corresponding groove-like recess 24 in the area of the bottom surface 22 of the main support 11 in a form-fitting and fitting manner.

Due to the above adjusting connection, the supporting body 20 is positioned in the recess 21 in such a way that the chambers 13, 14 extend into the lower area or up to the bottom surface 22, in particular on both sides of the supporting body 20. In the area of the bottom surface 22 the chambers 13, 14 - by the shape of the support body 20 - extensions. In this area, the supply channels 15, 16 for the medium open into the associated chambers 13, 14. The support body is therefore adjusted in an exact relative position within the depression 21, at a distance from side surfaces of the depression 21 on both sides.

At least the central seal 18 or the central doctor blade 19 is fastened (detachably) to the support body 20 . The present thin-walled, sheet-like sealing element 19 is preferably held in the functional position, which is preferably directed at an angle, by two holding profiles lying against one another. The profiles are on the one hand a holding profile 25 and on the other hand a counter-profile 26. The profiles 25, 26 are detachably connected to one another, in particular by a plurality of connecting screws 50. Between the profiles 25, 26 is the middle doctor blade 19 in one Oblique position opposite to the direction of rotation of the transfer roller 10 pointing fixed. The retaining profile 25 is fastened to an edge web of the supporting body 20 with a transverse connecting leg 27 .

The support body 20 is designed as a hollow body with a channel 28 running in the longitudinal direction. Inside this cavity, which is open at the top and has a different width, there is a support or actuating element 29 for the central seal 19. The actuating element 29 is displaceable as an elongated profile (on and movable) stored in the channel 28 on lateral support surfaces. A web-like support projection 30 rests on the middle doctor blade 19 . By moving the actuator 29, the (angular) position of the doctor blade 19 is changed.

The actuator 29 can be actuated in different ways. Present is below the actuator 29 in a corresponding An actuating element is arranged in the extension 49 of the channel 28, in particular an element that can be actuated by means of compressed air, in the present case an elongate, elastic, pneumatically actuatable hollow body 31, which is deformed against the underside of the actuating element 29 when compressed air is supplied, and this moves in the upward direction or in the direction towards Middle doctor 19 applied.

On the outside, the chambers 14, 15 are delimited by separate sealing elements, in particular by doctor blades or blades, in this case by a pre-chamber 14 assigned to the pre-blade 32 and the main chamber 13 assigned to the main blade 33. The blades 32, 33 are arranged in an inclined position, and although the pre-squeegee 32 points approximately in the direction of rotation of the roller 10 and the main squeegee 33 in an inclined position opposite to the direction of rotation, approximately in the same position as the middle squeegee 19. The position of the squeegee 32, 33 can be adjusted by pivoting movement, in particular with the help of pneumatic actuators 34 .

An important innovation concerns the detachability of organs of the device for repair, maintenance and/or cleaning purposes. In particular, it is a matter of easy dismantling or dismantling of the organs arranged on the main beam 11, in particular in the recess 21. Holding or connecting organs for the elongated organs are designed in such a way that in the working position the exact connection with a supporting structure - main beam 11 - It is guaranteed that when the organs are removed or removed, in particular for cleaning purposes, simple disassembly and reinsertion into the exact working position are facilitated.

The detachable organs are held in position with support organs by corresponding connecting organs that engage in one another in a positive and/or non-positive manner. The connection is released by relative displacement, so that the held organ is released.

The connection or anchoring system for the detachable construction parts preferably consists of a projection with a head-like extension, in particular a bolt or retaining bolt 35 with an anchoring head 36. The counterpart is essentially a recess in which the retaining bolt 35 or the anchoring head 36 is positively locked and, if necessary, firmly anchored. The counter-organ in question is provided with a recess or an elongated hole 37 in which the anchoring head 36 is suitably accommodated. This recess 37 is designed in such a way that a continuous opening 38 is formed in one (end) area. This preferably round extension of the elongated hole 37 is designed in such a way that the retaining bolt 35 including the anchoring head 36 can pass through the opening 38 . This relative position of the connected organs corresponds to the decoupled position for removing or removing the dismantled parts.

The structural parts 20 connected to one another by the connecting members 35, 37 are moved longitudinally relative to one another into the connecting position ( 6 , 7 ) or in the disconnected position ( 8th ) emotional. The procedure is preferably such that one of the two structural parts connected to one another is displaced along a parting plane 39—in one direction or the other—while the other structural part is stationary.

In the specific embodiment, the support body 20 in particular is anchored to the main support 11 in the manner described, in particular in the area of the bottom surface 22 of the depression 21. It is advantageous to attach connecting units 35, 37 in the area of the projection 23 on the one hand and the recess in the bottom surface 22 on the other hand. Like in particular 4 As can be seen, several retaining bolts 35 are preferably anchored in the main beam 11, preferably with a fastening thread 40. A number of retaining bolts 35 corresponding to the load are attached in the longitudinal direction of the construction, i.e. in the longitudinal direction of the supporting body 20, i.e. anchored in the floor surface 22 at a distance from one another. The counterparts to the retaining bolt 35, ie the elongated holes 37, are arranged on the underside of the supporting body 20 in alignment with the retaining bolts 35. The connection is preferably made or released by longitudinal displacement of the support body 20 with the main support 11 stationary. Accordingly, the connection of the support body 20 to the main support 11 can be established or released by a limited movement in the longitudinal direction.

The anchoring construction described is preferably designed in such a way that the separation and anchoring is facilitated by the relative displacement of construction parts. The anchoring head 36 of the retaining bolt 35 is attached with a circumferential chamfer 41 which facilitates the movement of the anchoring head 36 in the slot 37. Furthermore, measures have been taken to increase the anchoring tension of the retaining bolt 35 in the end position ( 7 ). For this purpose, a support surface 42 (extending on both sides of the retaining bolt 35) is designed as a lateral delimitation of the elongated hole 37 with a changing inclination in the direction of the end or anchoring position of the retaining bolt 35. In the present case, an end surface 43 offset in height is provided as a contact surface for the anchoring head 36 in the anchoring position with an increased tension created by the offset Longitudinal direction of the retaining bolt 35. A plurality of connecting units, preferably designed in this way, extends in the longitudinal direction of the supporting body 20, specifically in an arrangement and orientation such that when the supporting body 20 is longitudinally displaced in one direction or the other, all connections are either released or made .

Further structural parts of the device are preferably also connected to one another or to supporting structural parts in the manner described. The holder of the center seal 18 is preferably connected in a detachable manner to the associated support device, i.e. in the present case to the support body 20.

Preferably, the retaining profile 25 is approximately angular in design, at least with a connecting leg 27 by means of retaining bolts 35 and slot 37 attached to the supporting body 20 in the region of a supporting leg 44 of the supporting body 20 with a horizontal contact surface for the connecting leg 27. The design corresponds to the detachable connection preferably according to the embodiment 6 until 8th . In the present case, the retaining bolt 35 is connected to the supporting body 20 in the region of the supporting leg 44—analogously 4 . The elongated hole 37 is attached to the holding profile, specifically in the area of the connecting leg 27 ( 5 ). By moving the retaining profile 25 or the unit of the center seal 18, this is detached from the supporting body 20 and can be treated as an individual part.

The holding profiles for the middle doctor blade 19 - holding profile 25 and counter profile 26 - are presently assembled into a unit by the connecting screws 50, so that when the connection to the support body 20 is released, the profiles 25, 26 with doctor blade 19 are actuated and removed as a unit. Alternatively, the profiles 25 and 26 can be joined together with a detachable connection analogous to the connection between the retaining bolt 35 and slot 37.

The displaceability of structural parts of the application head, in particular the support body 20 and/or the holding profile 25, must not be impaired by fixed, immovable organs in the chambers 13, 14 or in the recess 21 of the main support 11. For example, there is an upright structural part in the main chamber 13, in this case a (ventilation) pipe 45. Although this is arranged on the side, it is located in the structural area of the built-in components of the supporting body 20. The holding profile 25 or its connecting leg 27 and/or edge areas of the Support body 20 - the region of the support leg 44 - are provided with a preferably laterally open recess 46. In the same area is the built-in part - pipe 45. The movable structural parts can be moved without being affected by the fixed organ.

The organs of the device, in particular the organs that can be displaced in the longitudinal direction, are fixed at preferably both ends by means of adjustable support organs or supporting organs that can be subjected to pressure. In the present case, seals 48 are attached at both ends, to which the organs of the application head rest. At the same time, the seals 48 close the cavities and chambers at the ends. Preferably, the seals 48 are pressed against the end faces of the elongate members, in particular against the supporting body 20, by pressing members 47.

To release the parts by longitudinal displacement of the same, the pressure elements 47 are relieved and the seals are released or removed. The displacement of the organs in the longitudinal direction can now be done by hand or with suitable tools.

The centrally releasable anchoring or attachment of the elongated structural parts can also be carried out in such a way that at least one of the cooperating anchoring organs is activated centrally by an actuating means, e.g. B. are adjustable by a guided push rod, namely between releasing position and anchoring position. The construction can preferably be designed in such a way that retaining bolts 35 are fastened to the main support 11 and a slide with slotted holes can be displaced relative to the supporting body 20 . The displaceable holding rail provided for this purpose is connected to the supporting body 20 .

Reference List

10

transfer roller

11

main carrier

12

support frame

13

main chamber

14

antechamber

15

main channel

16

pre-channel

17

holding unit

18

center seal

19

center blade

20

body

21

deepening

22

floor space

23

head Start

24

recess

25

holding profile

26

counter profile

27

connecting leg

28

channel

29

actuator

30

support projection

31

hollow body

32

pre-squeegee

33

main blade

34

actuator

35

retaining bolts

36

anchor head

37

Long hole

38

opening

39

parting line

40

mounting thread

41

chamfer

42

support surface

43

end surface

44

carrying leg

45

Pipe

46

recess

47

pressure organ

48

poetry

49

extension

50

connecting screw

Claims (8)

Device for applying flowable media to the circumference of a roller (10) or to a moving web, by means of an elongated transfer unit lying transversely to the direction of movement on the moving surface, which has a transfer head with at least one chamber for receiving a flowable medium and for transfer has the surface, with elongate structural parts of the transmission unit being connected to one another or to a supporting part (11) by means of a plurality of positively and/or non-positively acting connecting elements, the connecting elements being connected due to a relative movement of the parts thereof by a displacement of the connected, elongate structural parts of the transmission unit, can be moved alternatively into an anchoring position and into a release position in which the interconnected connecting organs can be separated from one another, characterized in that a connection between the connecting organs NEN bayonet-like with a retaining bolt (35) with an anchoring head (36) on the one hand and an elongated hole (37) with variable contour or transverse dimensions on the other hand, wherein the retaining bolt (35) with the anchoring head (36) enters the elongated hole (37), in such a way that with a corresponding relative position, the elongated structural parts are anchored on the one hand and the retaining bolt (35) including the anchoring head (36) emerges from the elongated hole (37) on the other hand in order to separate the elongated structural parts connected to one another. device after claim 1 , characterized by the following features: a) a support body (20) serves as a support for at least one seal of the chamber or of two chambers (13, 14), in particular as a support for a central seal (18), b) the support body (20) is preferably provided on an underside with a plurality of detachable connection units arranged at a distance from one another in the longitudinal direction, such that when the support body (20) is displaced in the longitudinal direction, all connections are preferably released or moved into the anchoring position. device after claim 1 or 2 , the chamber being delimited by a doctor blade. Device according to one of claims 2 until 3 , characterized by the following features: a) several elongated holes (37) are attached in the area of a free surface of a functional or structural element, in particular on a lower, floor-side surface of the supporting body (20), b) one preferably corresponding to the number of elongated holes (37) corresponding number of retaining bolts (35) is arranged on a contact surface for the functional or structural element, in particular for the supporting body (20), in a relative position coordinated with the elongated holes (37), in particular on a bottom surface (22) of a recess (21) of a Main support (11) for receiving the supporting body (20). Device according to one of claims 2 until 4 , characterized by the following features: a) the supporting body (20) has at least one elongated, preferably central projection (23) on the underside with a form fit in a corresponding channel-shaped recess (24) in the base serving as a support for the supporting body (20). surface (22), b) the connecting elements, in particular retaining bolts (35) on the one hand and elongated holes (37) on the other hand, are arranged in the area of the projection (23) and the recess (24), in particular in such a way that the elongated holes (37) Area of the projection (23) of the supporting body (20) and the retaining bolts (35) on the bottom surface (22) of the main beam (11) are attached. Device according to one of claims 2 until 5 , characterized in that with the support body (20) connected elongated structural parts, in particular a holding profile (25) for a sealing element (19) with connections that can be made and released by relative displacement are attached to the support body (20), in particular in the version with retaining bolts ( 35) and elongated hole (37), the elongated holes (37) preferably being attached to the retaining profile (25) and the retaining bolts to the supporting body (20). device after claim 6 or one of the further claims, characterized in that the holding profile (25) is fastened with a transversely or horizontally directed connecting leg (27) to a corresponding surface of the supporting body (20), in particular to a supporting leg (44) of the supporting body (20). Device according to one of Claims 6 or 7 , characterized in that the movable elongate structural parts, in particular the supporting body (20) and/or the holding profile (25) are provided with openings or recesses (46) in the area of in the depression (21) of the supporting body (20) or in fixed components arranged in the chambers (13, 14), in particular in the area of pipes (45), in such a way that the displaceable functional or structural parts can be displaced relative to the fixed parts (45) lying in the area of the recesses (46).

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