Device for wetting flexible mat-shaped carrier materials

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a device for wetting a flexible mat-shaped carrier material comprising guiding elements for the transport and guiding of the carrier material configured in such a way that it least one hollow space limited by the carrier material is constituted into which a spray device can be introduced for wetting the upper surface of the carrier material which is turned to the inner side of the hollow space. Furthermore, the invention relates to a method for wetting a flexible mat-shaped carrier material in which the carrier material is guided by constituting at least one hollow space and the upper surface of the carrier material which is turned to the inner side of the hollow space is wetted.

2. Description of Related Art

A device and a method of the above mentioned type are known, among others, from DE 196 33 656 C1. For the carrier materials, they can be, for example, nonwovens and fiber mats made of plastics, glass fibers and natural fibers, whereby these materials can exist as primary raw materials as well as as recycled materials or as a mixture thereof. Such carrier materials must often be provided with a stiffening matrix material by spraying on liquid existing components. For the liquid existing components, they are generally two-component resins, for example polyurethane resins, epoxy resins and the like. Due to the adhesive effect and the curing process, there result moulded parts with an inherent stability which can be used, for example, in the automotive industry, in the furniture industry and for consumer goods. For the device for wetting such mat-shaped carrier materials according to DE 196 33 656 C1, a continuous carrier material web is guided over deflection rollers as well as a chain conveyor guide through a wetting device in which it can be wetted on both faces. For this purpose, the carrier material web is guided over two parallel tunnel chain wheels so that it constitutes the surface area of a cylindrical hollow space (tunnel, drum) between these wheels. The inner side of this surface area is then sprayed with the wetting agent and thus wetted on one face. The losses and emissions of the wetting agents to the outside are limited by the fact that the wetting takes place in the inner part of a hollow space. For the double faced coating of the carrier material web, a second pair of tunnel chain wheels is placed in the wetting device by means of which a second cylindrical (tunnel-shaped) hollow space is constituted. Hereby, the inner side of the surface area of the hollow space is however constituted by the other face of the carrier material, i.e. the face which is not yet wetted. Thus, the second side of the carrier material can also be wetted in this second hollow space.

Moreover, methods are known for which two carrier material mats are simultaneously worked, since they constitute together a hollow space for wetting because of corresponding guides. Here, a double-faced coating can also be achieved by turning the two mats.

The so-called high-pressure spray technique constitutes a further state of the art. Wetting agent spray mist is produced here with high pressure and with a relatively high flow rate of additional air. High-pressure spray heads work with an admission pressure up to 80 bar and also use this high pressure for a hydrodynamic mixing effect in the spray head.

The spray heads are most of the time guided by a robot. The output of such systems reaches 2 to 3 m

2

/min (one-faced) depending on the precision requirements. Since this method is very flexible to use because of the free programmability and is variable with respect to the quantities to be sprayed, it requires high investment costs and a high regular expenditure of cleaning which reduces the daily availability of the system. Furthermore, the system requires much space for the equipment for a relatively low output per area unit. The high overspray quantities, i.e. the quantities of wetting agent which do not reach the aimed place and are sprayed lost in the environment, are also disadvantageous. Finally, there also result high waste quantities of production auxiliary materials, such as for example covering foils.

For the roller-laminating methods, wetted spreader rolls apply the wetting agent onto the carrier materials. Herbey, there does not result or there only results little overspray and only a slight pollution of the ambient air. Moreover, these methods achieve a high output per area unit but cause considerable pollution problems in the installation.

Furthermore, linearly guided spray heads in spray tunnels are known. These spray heads require slightly less investment costs and less installation surfaces than the high-pressure spray technique for the same output per area unit. They can also be compared to those with respect to their daily availability and the secondary waste quantities. The spray systems can work with or without air (“airless”).

Concerning the airless methods, spray heads with a mechanical compulsory mixer have been developed which can be operated with relatively low media admission pressure up to 15 bar and only very low quantities of additional air (Tartler company, Lü tzelbach, Germany). In a certain embodiment, as with a centrifugal wheel is provided with a continuous rotary axle which is preferably screw-shaped for the transport of the wetting agent to its front end. At the front end of the axle, there is a centrifugal :disk with a diameter of a few centimeters. The screw and the centrifugal disk rotate at work with numbers of revolutions up to 4000 revs./min. Due to the impact of the wetting agent onto the centrifugal disk, the wetting agent is centrifuged because of the centrifugal forces radially outwards where it reaches the object to be wetted. For wetting carrier materials in the mat cut-out piece with such a device, the mat can be fixed on the inner wall of a rotary drum. The mat upper surface turned to the inner side of the drum can then be wetted by the above described centrifugal wheel spray head. With this method, only one-faced wetting of the carrier materials is possible, since the inner side of the drum would be contaminated by the already wetted upper surface of the carrier material if the mat would be used turned in the drum. Since the wetting agents often are resin components and thus substances which can also be used as adhesives, the contamination of wetting installations with the wetting agent constitutes a particular problem.

It is a disadvantage of the above mentioned “drum wetting methods”, among others, that, when the installation is being switched off, they leave either only partially wetted raw mats (i.e. wetted on one face), or they require a relatively high expenditure of technique in order to avoid this. For example devices for the “self threading” of the mat ends must be provided for. If two mat webs have to be worked simultaneously, due to the double layout of machine parts (unwinding, drying, material storing, discharging device, assembling device), this causes relatively high investment costs which can only be defended for an utilization of the very high possible output.

Furthermore, a non-homogeneity of the wetting result appears with the known drum wetting methods, when a horizontally guided centrifugal spray device is introduced into the hollow space (drum, tunnel).

Finally, with the methods with a chain or toothed disk guiding, the fault is found that they have practically no flexibility with respect to the variation of the cut-out dimension of the raw mat, which is however often desired for an optimization of the production.

SUMMARY OF THE INVENTION

The aim of this invention was to improve a device of the type mentioned above in such a way that its construction is simpler and that it can thus be produced with less costs, that the coating result is homogeneous and that cut-out dimensions as different as possible can be flexibly worked.

This aim is achieved in that the transport and guiding elements are constituted by a frame with side ledges into which a carrier material mat can be clamped, whereby at least one flexible side ledge can be reversibly brought from the stretched form into a bent form.

Accordingly, it is the question of a device for which, similarly to the “drum wetting methods”, a flexible mat-shaped carrier material is formed over guiding elements in such a way that a hollow space is created which is limited by the carrier material, hollow space into which a spray device can be introduced for wetting the inner side of the hollow space. According to the invention, the transport and guiding elements are constituted by a frame with side ledges in which a carrier material mat can be clamped, whereby the frame has at least one flexible side ledge which can be brought from the stretched form into a bent form (curved, buckled form) and back.

The device according to the invention thus realizes the transport and the configuration of a hollow space from the carrier material mat according to another principle than that of the prior art. Not an (endless) web of carrier material mats is transported and, due to a corresponding web guiding, the intermediate configuration of hollow spaces is provided for, but a single carrier material mat is first firmly tentered into a frame. The frame constituted by side ledges limits a surface, the size of which corresponds to the size of the mat, or the size of which is preferably somewhat bigger than the mat surface. A mat to be coated can then be gripped in the frame surface by means of appropriate retaining means such as, for example, clamps or hooks which are fixed to the side ledges of the frame. A mat which is placed in the frame in this way can be moved together with the frame at will and can especially be transported from a mat distribution station to a coating station and from there to a further processing station, for example to a press. The peculiarity of the frame consists in the fact that at least one side ledge is flexible. This means that it can be brought from the stretched, straight form to a curved or buckled form and back. Hereby, the side ledge can be continuously bendable like a metal wire but can also consist of rigid segments which are articulated the one with the other so that a polygonal tension is created by bending the side ledge. Due to the bending of the flexible side ledge, it is possible to bring the frame which is flat at the beginning with an even frame surface into a threedimensional form which substantially corresponds to a bent cylinder wall (with a circular or polygonal base). Thus, due to the bending of the side ledge, a hollow space is constituted by the carrier material mat clamped in the frame, hollow space into which a spray device can be introduced in a known way for wetting the inner upper surface of the hollow space. Compared with the spraying of an even surface, the constituting of the hollow space has the advantage that coating means losses are minimized due to the fact that the carrier material runs allround as far as possible.

The carrier frame which is used according to the invention has a considerably simpler construction than devices known from the prior art. A corresponding coating device can thus be produced with less costs. Furthermore, the mat cut-out can be variably held in certain limits, since mats of different sizes can be held on the side parts of the frame by fixing clamps with a different length or, due to a movable construction of an articulated arm, the distance between the clamps on the lateral articulated arms can be varied. The device according to the invention thus allows mat size variations up to 10% in both cut-out directions without any problem. Different cut-outs can even be alternately transported within these limits, for example for the front doors and the back doors of a vehicle. Hereby, the machine technical variations for a change of the cut-out size are automatizable. A further advantage of the device according to the invention consists in the fact that this device can be made with a considerably compacter construction, i.e. it requires less space than known devices.

In a further development of the invention the flexible side ledge can be brought into a curved form towards both sides of the frame surface. This means that the flexible side ledge can also take the curvature which is mirror-inverted to the first curvature. In this way, the invention achieves that a mat which is placed into the frame can constitute two different hollow spaces for which respectively another upper surface of the mat constitutes the inner side. Due to a curvature of the flexible side ledge into the first curvature direction and then into the second curvature direction, the clamped carrier material mat can be coated on both faces the one after the other.

A double-faced coatability of the carrier material mat could principally also be obtained by two different groups of flexible side ledges, whereby the first group guarantees the constitution of a hollow space with a first upper surface of the mat as an inner side and the second group a curvature by constituting a second hollow space for which the second upper surface of the carrier material mat forms the inner side. However, it is simpler for the construction to work with only one group of flexible side ledges and to configure these side ledges bendable in two directions. Such an arrangement also has the advantage that the coating of both hollow spaces can be carried out by the same spray device without complicated manipulations.

The side ledge can consist of several (rigid) segments connected with each other by hinged articulations. Such an assembly is easy to construct and guarantees a high frame stability since the articulations and the hinges can be constituted with practically any stability without this being detrimental to an easy bendability of the side ledge. Furthermore, the setting angles of the hinges can be easily controlled so that the movement and confirmation of the frame can be automatized.

In a further development of the invention, the whole frame is movably arranged, whereby it is preferably swivellable between at least one position with a horizontally orientated frame surface and at least one position with a vertically orientated frame surface. Due to the movability of the whole frame, the mat can be moved from a reception location to a coating station and from there to a further processing unit, for example to a compacting station. Since mats made of the carrier materials to be coated are generally supplied in the horizontal position, it is advantageous to be able to bring the frame into a horizontally orientated position for receiving and for clamping a mat. Moreover, it is advantageous to be able to bring the frame afterwards into a vertical position in which, due to a corresponding curvature of the flexible side ledge, a substantially cylindrical hollow space with a vertical axis can be constituted. For in this case, the spray device can be introduced into the hollow space along the vertical axis. This orientation of the spray device has the advantage that the effect of gravitation onto the spray mist does not cause an inhomogeneous coating result on the mat. Relating to the direction of the gravitation, the orientation of the vertical hollow space is symmetrical. This means a further advantage compared with the prior art for which only horizontally orientated hollow spaces (tunnels) are known in which, because of the gravitation, the respectively lower tunnel half is provided with a stronger coating.

The change in shape of the flexible side ledge preferably takes place over a driving motor and a corresponding gear. A determined curvature can be adjusted by means thereof in a simple manner, and the whole coating process can thus be automatized.

Furthermore, the invention relates to a method for wetting a flexible mat-shaped carrier material for which the carrier material is transported by constituting at least one preferably cylindrical hollow space and the upper surface of the carrier material orientated to the inner side of the hollow space is wetted. This method is characterized in that a carrier material mat is tentered onto a carrier frame and the hollow space is formed by bending a flexible side of the carrier frame.

Such a method has the advantage that the mat to be coated can be fixedly clamped into a carrier frame and that no expensive means have to be provided for threading and for a stable guiding of the mat during the transport. The mat which is placed in the carrier frame can rather be manipulated in a simple way with the whole carrier frame or over the carrier frame. By bending a flexible side of the carrier frame, the mat to be coated can be so formed that it constitutes a preferably cylindrical hollow space. This hollow space can then be used in the known manner to coat the inner side of the hollow space with a spray device with as less losses as possible. The method according to the invention is preferably to be carried out with a device of the type explained above.

The method can be further developed in such a way that two hollow spaces are formed the one after the other by two opposite curvatures of the flexible side of the carrier frame, the inner side of the hollow spaces being respectively constituted by different upper surfaces of the carrier material mat. In this way, a mat can be coated on both sides without requiring further complicated steps except the bending up of the flexible side of the carrier frame from a positive to a negative curvature.

The method according to the invention is preferably constructed in such a way that the axis of the constituted hollow space is orientated vertically. This has the advantage that the gravitation acting onto the spray mists of the spray device cannot result in non-homogeneities of the coating on the mat, since no place of the mat is preferentially oriented with respect to the gravitation.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be explained as an example hereunder with reference to the attached drawings.

FIG. 1

shows a cross-section through a hollow space constituted by the frame and the mat to be coated with a spray device working therein along the line A—A of FIG.

4

.

FIG. 2

is a perspective view of the frame with a clamped mat in the flat stretched state.

FIG. 3

is a perspective view of the frame with a clamped mat by constituting a hollow space.

FIG. 4

is a top view of the hollow space according to FIG.

3

.

FIG. 5

shows a detail of the bending mechanism of the flexible ledge of the carrier frame.

FIG. 6

shows a configuration of the bending mechanism with a central slewing gear.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The explanation of the invention will first begin with FIG.

2

. In this figure, an U-shaped frame which is formed by the side parts

104

,

102

and

101

can be seen. This frame and the side parts are also designated as “drum gripping frame” or “grasping frame” or “grapplers”.

A fiber mat 10 to be coated is clamped into the frame with the clamps

105

. The clamping of the mat

10

preferably takes place by the taking over of a raw mat cut-out piece from a supplying table, preferably from an even elevating platform. The clamping will be released again only with the definitive transfer of the impregnated mat to the succeeding pressing tool. This means that the mat is advantageously uninterruptedly fixed and that no interconnected transfer processes take place so that a high safety of the process is guaranteed. During the transfer, the gripping frame can also be used as a tentering frame in order to support a wrinkle-free deformation process. Thus, a particular transfer handling with tentering frame function is not necessary.

Moreover, it can be seen in

FIG. 2

that the median side ledge of the U-shaped frame is constituted by four individual segments

102

,

101

which are connected with each other over hinged articulations

103

. So, it is possible to U-bend the segments

102

,

101

against each other and thus to give a curved shape to the corresponding flexible side ledge of the frame. The curved shape can be seen, for example, in FIG.

3

.

The flexible side ledge constituted by the segments

101

and

102

is connected over a swinghead

100

with a support

150

for the swinghead. The frame as a whole can be swivelled over a movement of the swinghead

100

and can, in particular, be transferred from the (represented) horizontal position into a vertical position. The drum gripping frame according to the invention can be placed on a robot as well as on multi-axle linear and articulated handlings.

A vertical positioning of the carrier frame and thus of the placed mat

10

can be seen in the perspective view of FIG.

3

. In this figure, the support

150

is represented in the same position as in

FIG. 2

, while the orientation of the frame has been changed due to a swivelling movement of the swinghead

100

around the swivelling axles

108

,

110

. This variation consists for one part in that the frame surface is now orientated vertically downwards away from the support. However, on the other hand, the flexible side ledge of the frame has also been brought through right-angled buckling at the hinges

103

and

108

from the stretched form into the shape of a (near) closed quadrangle. This four-square shape results in that the flexible mat

10

tentered into the frame takes a drum-shaped or cylindrically curved shape, whereby the axis of the cylinder is perpendicular. Moreover, in the figure, an angle □ of approximately 45° and an angle □ (=2×□) which illustrate the swivelling range of the grapplers

101

,

102

.

The position of the frame and of the mat

10

represented in

FIG. 3

represents the wetting position. In this position, a spray head (not represented) can be introduced from the top or from below in vertical direction into the hollow space constituted by the mat

10

and can thus coat the inner side of the mat by radial spraying of the coating agent (see below FIG.

1

).

The swing angle range of the hinges

103

allows that the flexible side ledge can also be angled or bent into the opposite direction. This means that the frame can also take a configuration which is mirror-inverted to that represented in

FIG. 3

(relating to a surface plane containing the support

150

and the swivelling axis

108

). Because of the simple reversible swivelling of the grapplers, the mat is thus bent over the stretched normal position to the other side and formed again to a spherical cylinder. Due to the transfer of the carrier frame into this mirror-inverted position, a second hollow space can be constituted by the mat

10

, this second hollow space being different from the first hollow space (

FIG. 3

) in that the other upper surface of the carrier mat

10

constitutes the inner side of this hollow space. By introducing the spray device again into the second hollow space, the other side of the carrier mat

10

can also be coated, if desired. This double faced coating of the mat

10

is possible without complicated movements of the mat and manipulations of the spray device. Due to a corresponding rotatability of the swinghead

100

about 180° around the vertical axis, the mirror-inverted second hollow space can also be spatially positioned at the same place as the first hollow space. This has the advantage that the spray device can be lowered respectively at exactly the same place for coating the inner faces of the hollow spaces.

FIG. 4

shows a topview of the mat

10

to be coated in the bent state represented in

FIG. 3

, the parts of the supporting frame being omitted. Furthermore, in

FIG. 4

, the spray device introduced into the cylindrical hollow space of the mat

10

is represented in form of a centrifugal emitter

200

for a two-component resin. Such a spray device is principally known and consists of a centrifugal wheel unit which is fixed at the end of a spindle

201

and which sprays the coating agent radially outwards over a centrifugal wheel disk

202

. Furthermore, in

FIG. 4

, a spreader ring

207

can be seen which is connected with the spray device over braces

208

and which additionally secures the circular shape of the bent mat

10

. The gap between the abutting mat front sides is covered by a segment spray protecting bracing

209

so that no coating means may escape or spoil the device. Said bracing

209

is fixed to the spreader ring

207

and protects the clamps which are on the bordering of the mat ends against dirt. The further structure of this device and the course of the wetting process will be described below with reference to

FIG. 1

which represents a section along the line A—A of FIG.

4

.

In the section according to

FIG. 1

, the segments

101

and

102

of the flexible side ledge as well as a rigid side ledge

104

of the frame can be seen. The mat

10

clamped into the frame is represented cut on the left side, while the intersection line of the figure coincides with the butt edge of both mat edges which is rolled up to a cylinder. The feeding pipe

205

for a first component (A) as well as the feeding pipe

204

for a second component (B) of the spray device

200

introduced along the vertical axis can be seen. Both components are mixed in the mixing area

203

and centrifuged outwards over the rotating centrifugal disk

202

with a radial motion component by constituting a spray jet

206

. The ring-shaped wetting band in the spray area has a dispersion of only +/−2 cm. The lifting device for the spray device

200

, the driving motor for the spindle

201

and the feeding hose pipes as well as the valves for the flow control of the components which are also on the unit

200

are not represented.

The wetting takes place during the upward movement of the spray device

200

, since otherwise the spreader ring

207

, which spreads the mat

10

, had to be guided over already coated places and would spoil them. Due to an intended irregularity of the vertical movement of the centrifugal emitter

200

, an axial irregularity of the wetting thickness (ring-shaped) can be achieved. Upon the end of the coating operation, the gripping frame takes its stretched normal position, swivels the wetted mat

10

again into the horizontal position and brings the mat to the next processing station which is generally a pressing tool.

The vertical orientation of the centrifugal emitter

200

sees to that the mat

10

is homogeneously coated, since the effect of the gravitation onto the spray jet

206

is the same at any place. This is a considerable advantage compared to the known coating methods in which the spray device

200

is guided horizontally. The vertical arrangement of the centrifugal emitter

200

is, as for the rest, also advantageous for its wetting with a cleaning agent, which is possible by simply immersing of the head into a container. This is generally necessary in case of interruptions or in pauses. In other arrangements, the spray head must be expressly swivelled for this purpose.

In order to process different mat widths, one or several articulated arms can be constructed slidable in order to change the distance of the clamps or hooks, eventually in an automatized process. The height of the mat

10

formed to a cylinder can, for example, be different from the length of the lateral grapplers or side ledges

104

, i.e. be shorter or eventually also project downward up to 20%. Thus, mats with different big cut-outs can be processed without modifying the device itself.

Moreover, in

FIG. 1

, a platform

501

can be seen which is placed below the cylinder formed by the mat

10

and which is covered by a protecting foil

503

on its upper surface turned to the cylinder.

Here, the protecting foil can be pulled off from a supply roll

502

of a discharging device

504

for used protection foil. The installation of such a platform with a slowly moved “lost” foil protection is recommended for the protection against dirt (overspray in the border area, dripping of the spray device etc.), if the mat

10

has to be wetted at the lower end completely up to the border.

The device according to the invention guarantees in an ideal way the advantage of the low-pressure centrifugal resin applying, thus especially as little pollution as possible and minimal material losses by avoiding overspray, low expenses for protective and covering measures as well as lower expenses for suction measures or for air circulation. Due to the low air exchange, a hardly measurable influence of the hall heat demand also takes place.

In order to ensure different production outputs or cycle times, several drum gripping frames according to the invention and eventually several placed spray devices can be combined with each other in different configurations.

A kinematic arrangement is shown in

FIG. 5 and 6

which allows to carry out the double bending process of the flexible side ledge of the frame by a single motor-driven gear. First, reference is made to the embodiment according to FIG.

5

.

In

FIG. 5

, the swivelling mechanism of the flexible side ledge is represented in detail and partially as a section, the elements being designated, in spite of existing correspondences, with new reference numerals. A swinghead

300

can be seen which swivels about a horizontal swivelling axis

301

. The inner right swivelling arm

303

and the inner left swivelling arm

304

are fixed to the vertical central axis

302

slewable to both sides. The outer swivelling arms, among which only the left outer swivelling arm is represented, are mounted on the ends of these swivelling arms and are connected by hinged articulations. An end piece

307

is mounted at the end of the outer swivelling arm, a lateral grappler

309

being fixed to this end piece by a swivelling axis

308

(compare

FIG. 2

, reference numeral

104

). The inner swivelling arm

304

and the outer swivelling arm

306

are coupled over a hinge bolt

305

which is torsion-proof connected with the inner swivelling arm

304

.

The movement coupling of the individual swivelling arms which takes place over gears will be described below. First, a conical toothed wheel

320

is coaxially connected with the central axis

302

. This conical toothed wheel

320

cooperates with a further conical toothed wheel

321

which is mounted on the coupling shaft

323

, running parallel to the inner swivelling arm

304

, which is held by a bearing

324

placed on the inner swivelling arm

304

. A further conical toothed wheel

325

for the power take-off is mounted at the other end of the coupling shaft

323

. This conical toothed wheel

325

cooperates with a conical toothed wheel

326

which is torsion-proof connected with the outer swivelling arm

306

and which drives this arm. A rotation of the vertical central axis

302

is thus transformed by the mentioned mechanism into an angular displacement of the outer swivelling arm

306

relative to the inner swivelling arm

304

. Due to the selection of the transmission between the conical toothed wheels

320

and

321

in the ratio 1:1 (angle □) and the conical toothed wheels

325

to

327

=2:1 (angle □), the part

307

describes the double swivelling angle with respect to the part

304

—relatively to the part

304

.

Furthermore, a chain toothed wheel

327

is coaxially and torsion-proof placed on the hinge bolt

305

, a driving chain

328

running over this wheel. This driving chain

328

is furthermore guided over a chain toothed wheel

329

which is connected with the swivelling axis

308

of the lateral grappler

309

. A rotation of the bolt

305

causes a rotation movement of the grappler

309

over this mechanism. The swivelling axis

308

and the lateral grappler

309

are, in fact, generally fixedly connected with the end piece

307

. But in this case, there are no transmission mechanisms

327

to

329

(chain toothed wheels and driving chain). However, in case a controlled deviation of the clamp orientation from the basic position is wished, this can be achieved in the way represented in FIG.

5

through the selection of an appropriate transmission ratio of toothed wheel

327

to toothed wheel

329

.

The end piece

307

can be displaced relatively to the outer swivelling arm

306

in order to be able to adjust the device to different raw mat lengths. This length variation can also be performed automatically. Corresponding details such as for example a spindle drive with motor are not represented.

A configuration of the swivelling kinematics with a central swivelling gear is represented in FIG.

6

. Here, all kinematic dependences are compulsory actuated with a single motor. Said motor

360

is fixed on the swinghead

300

and drives a coaxial primary shaft

362

over a shaft coupling

361

. This shaft

362

is guided through the central swivelling shaft

302

downwards. A pinion

363

, which is connected with the shaft, is mounted at the end of the swivelling shaft. The pinion drives again the intermediate toothed wheel

364

which is directly in gear into the edge indentation of the left inner swivelling arm

304

and which causes a pivoting of this part. Simultaneously, the intermediate toothed wheel

364

also drives the toothed wheel

366

of the same type which is in gear into the edge indentation of the right inner swivelling arm

303

. Due to the reversal of the sense of rotation between the toothed wheels

364

and

366

, the inner swivelling arms

303

and

304

execute the desired opposite movements. The remaining structure of the mechanism for the swivelling movement of the outer grapplers corresponds to that of FIG.

5

.

Reference numerals:

10

Fiber mat

100

Swing head

101

Inner swivelling arm

102

Outer swivelling arm

103

Articulations

104

Side ledge

105

Clamps

108, 110

Swivelling axis

150

Support

190

Swivelling angle α for the inner swivelling

Arm 101

191

Swivelling angle β for the outer swivelling

arm 102 relatively to the inner swivelling arm 101

200

Centrifugal emitter for two-component resin

201

Shaft of the centrifugal wheel unit

202

Centrifugal disk

203

Mixing area

204

Feeding of component (B)

205

Feeding of component (A)

206

Spray jet

207

Spreader ring

208

Brace

209

Segment spray protecting brace

300

Swinghead (see 100)

301

Horizontal swivelling axis (see 110)

302

Vertical central axis (see 108)

303

Inner swivelling arm right (see 101)

304

Inner swivelling arm left (see 101)

305

Hinge bolt torsion-proof connected with inner

swivelling arm 304

306

Left outer swivelling arm (see 102)

307

Displaceable end piece

308

Swivelling axis

309

Lateral grappler (see 104)

320

Conical toothed wheel connected with central

axis 302

321

Conical toothed wheel placed on coupling shaft

323

323

Coupling shaft

324

Bearing for the coupling shaft, placed on inner

swivelling arm 303/304

325

Conical toothed wheel (take-off power)

326

Conical toothed wheel torsion-proof connected

with 306

327

Chain toothed wheel torsion-proof connected with

hinge bolt 305

328

Driving chain

329

Chain toothed wheel connected with swivelling

axis 308 of the lateral gripping arm 309

360

Driving motor

361

Shaft coupling

362

Coaxial driving shaft

363

Pinion

364

Intermediate toothed wheel 1

365

Axis of intermediate toothed wheel 1

366

Intermediate toothed wheel 2

367

Axis of intermediate toothed wheel 2

368

Bearing plate (torque bearing) for axis 365 and

367, fixedly connected with central shaft 302

370

Indentation on the inner gripping arm 303

371

Indentation on the inner gripping arm 304

501

Platform

502

Supply roll for protecting foil

503

Stretched protecting foil

504

Discharging device for used protecting foil

Number	Date	Country
299 17 899 U	Oct 1999	DE
99120964	Nov 1999	EP
299 20 322 U	Nov 1999	DE

Number	Date	Country
4441838	Apr 1996	DE
19633656	Mar 1998	DE

Device for wetting flexible mat-shaped carrier materials

Information

Patent Number

Date Filed

Date Issued

Inventors

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Agents

CPC

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US

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Abstract

Description

Claims

Priority Claims (3)

Foreign Referenced Citations (2)