DE8015171U1 - DEVICE FOR STRIPLY APPLICATION OF ADHESIVES AND HIGH VISCOSITY ADHESIVE PASTS TO SURFACES - Google Patents

Description

RUTGERSWERnE AKTIENGESELLSCHAFT, D-6000 Frankfurt f

GM-770-R. I.

Utility model registration ϊ

I Device for the strip-wise application of adhesives and highly viscous, adhesive pastes on surfaces. /

The invention relates to a device for strip-shaped | Application of adhesives and adhesive pastes on terrain or | Structural areas, especially roof areas, consisting of one heated funnel-shaped attachment, which is mounted on a mobile positive displacement pump.

According to a known method, roofing membranes, rollable thermal insulation sheets and thermal insulation panels are coated with adhesive strips of adhesive attached to roof surfaces in such a way that one to four with the help of a compressed air-operated spray gun Approx. 4 cm wide and a few mm thick adhesive strips are applied to the area to be covered. On these strips the mentioned sheets or plates are pressed on and so-.with fixed. The adhesive masses are packaged in sausage-shaped plastic casings, which are referred to as dolls.

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For reasons of handiness, they do not weigh more than 5 kg. In this way, a rapid application of glue is constantly interrupted because the contents of the pack are quickly used up and have to be replaced by new dolls, which takes up set-up times.
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A device for applying bituminous cold adhesive compositions to surfaces is also known, in which a heated funnel is mounted on a mobile positive displacement pump. The pump comes with a manifold several movable outlet openings to which the conveyor hoses are attached. This device has the Disadvantage that the cold and viscous adhesives in the funnel do not work at low, wintry temperatures can be obtained fully pumpable. In addition, this device applies the adhesive in the form of round strands, which still have to be squeezed wide afterwards; the absolutely necessary initial adhesion to the substrate consequently not achieved to a sufficient extent.

The invention is therefore based on the object of a device Like the positive displacement pump with a funnel-shaped attachment for the strip-wise application of adhesives and highly viscous adhesive pastes, which are additionally caused by cold rigidity can be thickened to develop from large packaging units on site or building areas, especially roof areas, so that even with a damp surface, the application of the masses with good initial adhesion is ensured. The device should be designed in such a way that flat strips of adhesive are applied in long-lasting work cycles can be.

This object is achieved by a device for the strip '' "" shaped application of adhesives and adhesive pastes on terrain

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or building surfaces, especially roof surfaces, consisting of a heated funnel which receives the adhesive and which on a mobile displacement pump is mounted, as well as a distributor pipe attached to the pump outlet with several movable ones Outlet openings and connection for injectors and separate delivery hoses, which is characterized in that a positive displacement pump (7) with an approximately 40 - 50 χ 15 cm enlarged suction cross-section or a feed screw (6) with an equally expanded suction cross-section and a funnel (1) with one cylindrical and one only in one Has a flat conical lower part with a heatable protective grille (3) in the transition between the two parts; that feeding snail (6) and pump element (7) are partially or completely heated and the drive shaft (10) with a receptacle for attachment is equipped with a safety crank; that at the pump outlet sits a thermostatically controlled heating pipe from which a lockable bypass to the funnel (1) two or more individually and together horizontally and vertically adjustable and Wide slot nozzles (14) that slide resiliently rotatably on the subsurface.

The pump has a funnel for receiving a container, for example hobbocks, which has a sliding base for residue-free Has emptied the vessel. At the same time, the funnel is designed in such a way that it holds the processing quantity in a plastic bag picks up packaged, the bag automatically opens after loading at the end facing the pump and a guide forms for a piston plate that puts a strain on the plastic bag.

The pump is heated and conveys the adhesive via a heated line either to a nozzle assembly connected to it, which has 1 to 6 horizontally and vertically adjustable slot nozzles, or an optionally controllable one Connection for a flexible high pressure hose with a

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Nozzle or one of several horizontally and vertically adjustable Nozzles existing nozzle holder.

The pump is set up in such a way that it also works after a long period of time Standstill with remaining adhesive can be started again without having been cleaned beforehand. To this end In addition to a trough heater, it has a switchable bypass and a manually operated crank with free-wheeling.

The adhesive material is made into a thin layer through diagonally cut nozzle openings of rectangular cross-section

applied by the nozzle is rotatably mounted and is pressed elastically onto the surface to be coated. To this In this way, the effect of a spacntel application is achieved, which has the advantage that the adhesive also adheres to a wet surface, 15. Because the abrasive nozzle edge, in cooperation with the adhesive, creates a film of water, for example on a metal roof surface pushes away. In addition, the nozzle ensures a flat and thin application of glue, which - apart from the associated Economical consumption - together with the viscosity for the initial adhesion, which is particularly necessary on high roofs guaranteed. Otherwise the sealing materials that have just been laid can be carried away by the suction effect of the liindes.

The nozzles attached to the common nozzle assembly can each be shifted horizontally and vertically, so that both the distance between the strips varies, for example, according to the grid of a trapezoidal sheet support •. be coated, as well as 100 mm and more thick stepped shoulders

can be.
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The device has a chassis made up of several pairs of wheels, which are arranged so that trapezoidal sheets in each direction can be run over without bumps. The landing gear owns

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a finely adjustable and a stop brake to make driving on sloping surfaces easier and / or. a rolling on them to avoid.

The heating is not only used, as mentioned, for easy start-up after a long period of standstill, but also for warming up the compound for short-term lowering of the viscosity in order to reduce the nozzle discharge and the adhesion, especially during winter operation to support. In this way, if necessary, the advantages of a hotmelt application can also be used.

For this purpose, the mass in the container or in the receiving funnel does not need to be heated, which in view of the bad Thermal conductivity and the generally high sensitivity of the material against high surface temperature is very time consuming. With the proposed device, however, that Adhesive material, which can be stored for a long time at low temperatures, for example, fully grasped and through a heated, thermostatically controlled pipe is pressed. the thus achieved increase in the flow rate and the spec. The surface of the mass flow causes gentle heating of the adhesive on the way from the container to the nozzle outlet.

With the aid of the individual figures, further details of the device according to the invention are explained in the form of an exemplary embodiment.
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1 shows a side view of the device. FIG. 2 shows an end face of the device 3 shows a plan view of the device. FIG. 4 shows an application nozzle with suspension in detail 5 shows the receiving funnel in connection with the adhesive packed in the plastic bag

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According to FIGS. 1 to 3, the receiving funnel (1) receives the sheet metal container (2) containing the adhesive, the bottom of which also can be removed from the lid. In addition, the sheet metal container (2) contains a sliding cover with the removable mass sinks down and wipes the walls of the container cleanly.

The mass flows over the heatable protective grille (3) into the lower funnel part (5), which is tapered in only one level, and over the feed screw (6) with a 40 - 50 χ 15 cm wide opening to the actual pump (7), preferably an eccentric screw pump. Both organs can be heated on the underside (3) to set the breakaway torque of the drive motor (9) and thus the motor size at low temperatures and after a long period of standstill to keep within limits.

A safety crank with freewheel that can be plugged onto the drive shaft (10) serves the same purpose. The funding body (7) pushes the mass through the U-shaped and thermostatically heated tube (11) via the flexible hose (12) to Nozzle assembly (13). The arrangement of the nozzles (14) can be seen from FIG. The nozzles can either be total or individually adjusted in height and at a distance from one another, whereby they are always guided parallel to the ground are, so that due to their shape and their flexible attachment always the application of a thin spatula (15) is guaranteed. According to the details illustrated in FIG. 4, the nozzle (14) is articulated on a square shoe (16), which ensures a position parallel to the floor and the parallel displaceability. Thanks to her curved Shape and the special arrangement of the feed hose (21) it is pressed elastically against the lower surface, which leads to an intensive spread of the adhesive and thus leads to good adhesion even on a damp surface.

The nozzle assembly (13) is for easy transport in the · " ⁷ -

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Point A can be swiveled by approx. 90 ° and is automatically locked in a vertical position by a pawl. He can easily be dismantled and stored as a mirror image in point B if the workflow requires it.

The pump has a running gear consisting of several wheels (1G) arranged in pairs in such a way that undulating surfaces, e.g. Trapezoidal sheet metal that can be driven over smoothly.

According to FIG. 3, a flexible, switchable hose (17) with a stick nozzle (18), which is used for applying adhesive to narrow places, overlaps, connections, etc., is a fixed component of the pump. In addition, the device has a closable connection for a longer hose around for future inaccessible or steep surfaces with a ^v single- or multi-nozzle arrangement to serve '! Tons.

The flexible hoses contain an electrically heatable cable, preferably with a self-regulating effect when reached a certain temperature so that the hoses do not need to be cleaned or grounded even if they are not used for a long period of time. ensure a sufficient flow rate to the site at low temperatures.

A variant of the adhesive packaging is shown in FIG. 5. Here, the funnel (1) fills a plastic bag filled with adhesive (20), which is entered in the closed state. With the help of one or more fixed blades or one externally moved knife (19) or a current surge that briefly causes the heated grate (3) to glow, the bottom of the bag is opened and the glue is sucked in by the pump. To support this effect, for the better Sealing and for clean wiping off presses a weighted sliding base of the form 22 or 23 onto the sac!;.

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In this way, the packaging costs and the disposal costs can also be reduced.

With the help of the application device according to the invention it is possible to use certain building materials not only more efficiently, but also to stick in weather conditions that have not previously allowed this.

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Claims (7)

10 ROTGERSIERKE AKTIENGESELLSCHAFT, D-6000 Frankfurt GM-770-R Protection claims 15 1. Device for the strip-free application of adhesives and adhesive pastes on land or building surfaces, especially roof surfaces, consisting of a heated that Funnel that absorbs adhesive and is mounted on a mobile displacement pump and one at the pump outlet 20 fixed distribution pipe with several movable outlet openings and connection for inlet and separate Delivery hoses, characterized in that they have a positive displacement pump (7) with an approximately ι 40 - 50 x 15 cm expanded intake cross-section or a - 25 feed auger (6) with an equally expanded suction cross-section and a funnel (1) with a cylindrical I and a lower part, which is conical in only one plane, with a i | heatable protective grille (3) in the transition between the two $ Share owns; that feeding screw (6) and pump element (7) I 30 are partially or fully heated and the drive shaft ^k (10) with a holder for attaching a safety -2- 35 -2- crank is equipped; that at the pump outlet sits a thermostatically controlled heating pipe, of which a lockable bypass to the funnel (1) carries two or more slot nozzles (14) individually and together horizontally and vertically adjustable and resiliently rotatable on the ground. 2. Apparatus according to claim 1, characterized in that the funnel has one or more stationary Blades or a knife edge that can be moved from the outside (19) or an electrical annealing device (3) and is equipped with a weighted sliding cover (22). 3. Apparatus according to claim 1, characterized in that the displacement pump (7) is an eccentric screw pump is. 4. Apparatus according to claim 1, characterized in that by the outgoing from the pump flexible pressure hoses an electrically heatable cable is guided. 5. Apparatus according to claim 1, characterized marked t that the pivoting nozzle assembly (13) consists of square tubes and that it is on both sides of the Pump (7) can be connected. 6. Apparatus according to claim 1, characterized that the elastic adaptation of the slot nozzles to the ground by held in curvature Feed hoses (21) or is generated by spring elements. -3- 7. Apparatus according to claim 1, characterized in that the nozzle assembly (13) after Schwenkunc automatically engages in a pawl in the vertical.