SE542787C2 - Tools for applying a viscous medium - Google Patents

Abstract

A tool (10) for applying a viscous substance, which tool (10) is provided with a tool body (11) and a tool head (12) connected to the tool body (11) which comprises a substance chamber (13), a substance inlet (14) for the substance chamber (13) and a substance outlet (15) from the substance chamber (13), which substance chamber (13) is formed with a chamber roof (16), from which several side walls (21, 22, 23, 24) delimiting the substance chamber (13) extend and that said substance outlet (15) is located partly in the bottom of the substance chamber (13) and partly in the side wall (24) of the substance chamber (13), a side wall (23) being formed as a wiper (82) with a wiper edge (80, 91, 101 ), the substance outlet (15) in the side wall (24) of the chamber being delimited against the chamber roof (16) by a throttle (71) formed by a surface which forms an angle (180-a) with the chamber roof (16) so that the total area of the substance outlet (15) in the side wall (24) of the substance chamber (13) is smaller than that of the wiper (2) 3) total area of the substance chamber (13).

Description

Technical Field The present invention relates to the field of application of a viscous substance, such as silicone, molding compound, sealant or putty to a joint between two building elements. The joint can be located in an outer corner, in a flat surface or in an inner corner. In particular, the invention relates to a tool for such an application, preferably for connection to a conventional gun syringe as a substance container.

Background of the invention Silicone as a sealing material is used all over the world in the building and construction sector by tilers, painters, carpenters, floor layers and glaziers and more and is considered difficult to apply as there is no room for mistakes without smudges and a lot of material waste. It is estimated that approximately 50% of the material applied is discarded through the method used today. A traditional way of applying silicone in a v-joint to achieve the best results is to first use masking tape and then apply the substance with a silicone syringe with the associated cartridge and the included straight spout to directly apply the substance after which with a soft scraping tool in the form of a card or with a finger scrape off excess substance material which normally amounts to about 50% of the total amount applied. This method means a great waste of environment, building materials and time. It is important when applying silicone, for example, to limit contact with undesirable surfaces, especially in bathrooms and in damp areas where a thin film of silicone means a breeding ground for dirt and mold. With the present invention, masking tape, scratch cards are eliminated and in addition no material waste occurs.

Prior art in the field can be seen in DE 20204737U, US 2009194567, GB 2553866, GB 2524564 and WO 2007133096, all of which show application nozzles for viscous materials.

DE 20204737U shows a tool for applying silicone joints which tool is designed with a space for the silicone which is pressed into the room via an inlet. The room is equipped with a scraper and with an outlet. The tool is also provided with support surfaces intended to support against wall surfaces.

The problem that can arise with previously known tools is the difficulty of dosing the substance correctly and avoiding spills on the side of the intended joint.

OBJECT OF THE INVENTION The object of the present invention is to solve the above-mentioned problems and to provide a tool with which a substance can be applied to a joint quickly and easily.

The purpose is also that the tool can be quickly and easily mounted to a conventional substance container which is connected to a spray gun or to a cartridge sprayer.

The purpose is further to enable a simpler application and which eliminates unnecessary substance waste.

The purpose here is to achieve a substance application of a viscous substance faster and cheaper than before.

SUMMARY OF THE INVENTION The present invention, as set forth in the independent claim, fulfills the above objects, thereby eliminating said disadvantages. Suitable embodiments of the invention are set out in the dependent claims.

The invention relates to a tool, for example a silicone pipe made of an elastic material, for facilitating the application of silicone and other viscous substances such as casting compound, sealant or putty to a joint between two building elements. The tool comprises, for example, a conical tubular body which transitions to a chamber with a flow opening and with scrapers which are arranged at the end of the body. The chamber can, for example, be delimited with sides in two directions with a scraper oriented at a 90 ° angle in relation to these by means of the opposite side of the scraper being open, the silicone pipe being guided in the direction of opening and material flow and creating a closed and sealed joint in the desired profile ready to be used.

The invention relates to a tool for applying a viscous substance, which tool is provided with a tool body and a tool head connected to the tool body which comprises a substance chamber, a substance inlet to the substance chamber and a substance outlet from the substance chamber. The substance chamber is formed with a chamber roof, from which several sides delimiting the substance chamber extend and that said substance outlet is located partly in the bottom of the substance chamber and partly in the side of the substance chamber, one side being designed as a wiper with a wiper edge. The substance outlet on the side of the chamber is delimited towards the chamber ceiling by a choke formed by a surface which forms an angle, 180 ° -a, where 10 ° <? <45 °, preferably 15 °, with the chamber roof so that the total area of the substance outlet on the side of the substance chamber is less than the total area of the wiper in the substance chamber. The sides of the substance chamber can be more or less curved and can together with its chamber roof consist of a single curved or double curved surface.

In one embodiment of the tool, all sides of the substance chamber and also its chamber roof are flat. Preferably, the substance chamber is formed as a volume having the main shape of a parallelepiped formed with a long side and a short side and with a choke at a short side.

In one embodiment of the tool, the throttling surface is flat.

In an embodiment of the tool, the substance chamber is provided with two flat sides which each form an angle of 90 ° towards the scraper of the chamber and that the chamber roof also forms an angle of 90 ° towards the scraper of the chamber.

In one embodiment of the tool, the area of the substance outlet on the side of the chamber is equal to the area of the side, i.e. the substance outlet corresponds to the entire side. The substance outlet in the bottom of the chamber also preferably corresponds to the entire bottom surface.

In one embodiment of the tool, the edge profile of the scraper is either straight, arcuate or angular. The arch shape or the angular shape can either be directed towards the chamber roof or from the chamber roof.

In an embodiment of the tool, the tool head is provided with at least two substantially flat outer abutment surfaces, for abutment against two elements between which application of substance is to take place, which abutment surfaces are fixedly connected to the substance chamber, the substance chamber being located between these at least two abutment surfaces.

In one embodiment of the tool, each abutment surface is provided with 2-5 pieces, preferably 3 pieces, of wiper edges between which respective wiper edges a substance collecting recess is arranged. Because the contact surfaces are provided with these wiper edges, a well-defined joint is obtained without unnecessary spillage of applied substance, which eliminates finishing work. The bottom of the depression can be flat or cupped, which gives different shapes and thus different effects on the wiper edges. Cupped depressions, for example, are easier to clean.

In one embodiment of the tool, the angle between the two abutment surfaces is 90 °, the abutment surfaces either facing out from the substance chamber or facing the substance chamber. This 90 ° angle between the contact surfaces is the most frequent design of the tool, but other angles are conceivable depending on the area of use. The angle can also be 270 °, which means that an external joint between two mounting elements with a 90 ° corner can be achieved.

In an embodiment of the tool, the two abutment surfaces on each side of the substance chamber are arranged in the same plane, i.e. they have an angle between them of 180 °. This embodiment allows the tool to be used, for example, when applying putty or silicone in the joint between two building elements in the same plane.

In one embodiment of the tool, the two abutment surfaces are large enough to bridge a joint between two elements that are passed when applying a substance. If the width of the joint is Bs, then the width of the tool is Bv? 3 Bs, preferably 3? Bv? 6.

Characteristic of a tool according to the present invention is that the chamber is advantageously made of an elastic material to create a space that seals against the application surface to allow application of silicone and other viscous masses without masking for waste material and finishing with time and environment.

A tool according to the invention allows the possibility of sealing flexible or solid material for application of a substance, for example silicone, without any masking or finishing being required. The substance during application passes through a tubular conical body which opens into a chamber which, for example, consists of two parallel chamber walls which are placed at 90 ° relative to a wiper and a flow opening.

A tool according to the invention to be designed with a chamber wall which together with a scraper creates a tight-fitting barrier to the surface to be joined which forces the substance to first fill the cavity to be filled and then to press substance in a rotating movement forward towards a flow opening to shape according to the profile of the wiper when moving in the direction of the flow opening. This rotating movement is effected by a throttle at the flow opening.

A tool according to the invention shows a profile-adapted scraper, with either a straight edge, an angular edge or an arcuate edge.

Brief description of the drawings The invention will now be described in more detail with reference numerals in connection with the accompanying drawing figures.

Figure 1 shows a perspective view of a tool according to the present invention.

Figure 2 shows a front view of the tool according to figure 1.

Figure 3 shows a side view of the tool according to figure 1.

Figure 4 shows a top view of the tool according to figure 1.

Figure 5 shows a bottom view of the tool according to figure 1.

Figure 6 shows a perspective view with a section A - A according to figure 4.

Figure 7 shows a plan view with a section B - B according to figure 5.

Figure 8a shows a tool head as part of the tool according to Figure 1. Figure 8b shows an alternative tool head.

Figure 9 shows a further alternative tool head.

Figure 10 shows another alternative tool head.

Figure 11 shows a use of the tool.

Figure 12 shows the connection of the tool to a substance container.

Description of the invention Figure 1 shows a perspective view of a tool 10 according to the present invention. The tool consists of a cone-shaped tool body 11 and a tool head 12 connected to the tool body 11 which comprises a substance chamber 13. For supply of substance to the substance chamber 13 this is provided with a substance inlet 14 and for application of the substance the substance chamber 13 is provided with a substance outlet 15. In the figure, the substance outlet 15 constitutes a whole side of the substance chamber 13, but in other embodiments the area of the outlet may be smaller than the side of the chamber. In the following, a chamber roof 16 in the substance chamber 13 is defined to the side of the chamber where the substance inlet 14 is located.

Figure 2 shows a front view of the tool 10 according to figure 1 with the substance chamber 13 limited partly by the chamber roof 16 and partly by several sides 21, 22, 23. One of the sides 23 acts as a scraper which forms the substance string during application. In the embodiment shown, the scraper is formed with a straight edge which thus gives the substance strand a flat surface after application. The figure also shows the chamber roof 16 as a dashed line which turns into a restriction towards the substance outlet of the substance chamber which is shown in the figure with a solid line. The substance chamber 13 is located in the tool head 12 which is formed with a first support surface 25 on one side of the substance chamber 13 and a second support surface 26 on the other side of the substance chamber 13. In the embodiment shown, these two support surfaces form an angle of 90 ° between them for to apply a substance between two building elements that connect to each other at a 90 ° angle. The figure shows an embodiment with outwardly directed support surfaces 25, 26 for applying substance in inner corners, but other embodiments with inwardly directed support surfaces for outer corners are conceivable within the scope of the invention. One such example is that the angle shown is instead 270 ° with its tip located on the line of symmetry S of the tool.

Figure 3 shows a side view of the tool 10 according to Figure 1 and its tool head 12, at least one support surface being provided with three wiper edges 41, 42, 43 which between them form substance-collecting depressions 44, 45.

Figure 4 shows a top view of the tool 10 according to figure 1 with the tool head 12 from above. The substance chamber 13 with its substance inlet 14 is flanked by the two support surfaces of which the first support surface consists of a first wiper edge 411, a second wiper edge 42i and a third wiper edge 43i. A depression 44, 45 is formed between each wiper edge which acts as a substance collecting pocket. Correspondingly, the second support surface consists of a first wiper edge 412, a second wiper edge 422 and a third wiper edge 432. Between each wiper edge a depression 46, 47 is also formed on this side which acts as a substance collecting pocket. The figure also shows the throttle 71 of the substance chamber 13 in the form of an angular surface.

Figure 5 shows a bottom view of the tool 10 according to Figure 1 where the cone-shaped tool body 11 is connected to the tool head 12 and where the substance inlet 14 to the substance chamber 13, indicated by dashed lines, is shown from the underside of the tool 10.

Figure 6 shows a perspective view with a section A - A according to figure 4. The section shows the inside of the conical tool body 11, which inside is also conically shaped to be able to be pressed on a conventional conical tip to a cartridge syringe. The conical inside opens into the substance chamber 13 through the substance inlet 14. The figure also shows that the choke 71 is formed as a flat surface which forms an angle with the chamber roof 16. The front surface 61 of the tool head 12 further forms an angle with the front surface of the first support surface 25. This angle? is 1 °? ? ? 5 °.

Figure 7 shows a plan view with a section B - B according to Figure 5 in which the substance chamber 13 is delimited by its sides 21, 23 and its chamber roof 16. A side 23 acts as a scraper with a scraper edge 80. The chamber roof 16 merges into the choke 71 in the form of the flat surface which forms the angle? with the intended extension of the chamber roof 16 according to the figure. Depending on the type of substance to be applied, the angle can be determined in the range ° <? <45 °. Preferably is the angle? = 15 ° if the substance of the tool is silicone. The larger the angle? is the larger the choke becomes, i.e. the substance outlet 15 in the side 24 decreases with increasing angle α.

In the embodiments shown, the side 24 corresponds to the substance outlet 15, but in other embodiments the substance outlet 15 may be smaller than the side 24.

Figure 8a shows the tool head 12 as part of the tool 10 according to Figure 1 with its doctor blade edge 80 on the scraper 23. The figure shows the constituent parts of the substance head 13 of the tool head 12. when applied, leaks on the sides and that its length L1 means that the tool can slide over joints between mounting elements without the wiper edge 80 sliding down into the joint which would otherwise create a notch in the joint. Such notches are common when using so-called scratch cards that have been used in the past. Additional components are: the scraper 23 which scrapes off the substance and creates its profile, the substance outlet 15 with the choke 71, one outer side three scrapers 411, 421, 431 which together create a barrier against the application surface and between which substance collecting depressions 44, 45 are formed which collect excess substance if the application flow should be too large. The wipers also have the function of being friction-reducing in the application of the substance and that they also make the tool more flexible when moving over plates with a structure that gives an uneven surface. The wiper edge 80, the substance inlet 14 and the throttle 71 are adapted one after the other, the dimensions being different depending on the length L2 of the edge 80 in order to create an even substance flow during application. The length L2 of the wiper edge 80 is equal to the width of the substance chamber 13 at the outlet 15. In the embodiment shown, the depth D1 of the substance chamber 13 is greater than or equal to the length L2 of the wiper edge 80. In the case of substance chambers with completely flat chamber walls, the width of the substance profile is constant and equal to the length of the edge profile.

Figure 8b shows an alternative tool head which is externally designed in the same way as the tool head according to Figure 8a, but which internally has a substance chamber 132 which has a depth D2 which is smaller than the width of the chamber at the outlet 15. This shallower substance chamber 132 is also provided with a choke 712 in the form of an angled surface as previously described.

Figure 9a shows an alternative tool head 12 with a second example of an edge profile 91 on the scraper 23 for an alternative purpose. The edge profile 91 is formed with a V-shape which results in a ridged sealing string. The tool head is also formed with a flat front surface 92 which is perpendicularly oriented towards both the side surfaces 26 and the chamber roof 16. The substance outlet is larger than that shown in figure 8b and corresponds to the size of the substance outlet in figure 8a.

Figure 9b shows a further alternative tool head whose side surfaces are provided with wiper edges 95 between which a recess 96 is formed whose bottom is cupped which gives an alternative effect on the wiper edges 95. Such cupped recesses are for example easier to clean and give a clearer movement of any substance out of the recess 96 by the substance being guided by the curved sides of the wiper edges 95.

Figure 10 shows a further alternative tool head 12 with a third example of an edge profile 101 on the scraper 23 which is arcuate for an alternative purpose. In this tool head 12, the front surface 102 is angled as previously described in Figure 6. The substance outlet as well as the volume of the substance chamber is smaller than that shown in Figure 9 and corresponds to the size of the substance chamber and substance outlet in Figure 8b.

As can be seen from the embodiments shown, the volume of the substance chamber can vary both in width and depth, and also the size of the substance outlet, i.e. the throttle, can vary in size. Within the scope of the invention, combinations of the embodiments shown can be achieved.

Figure 11 shows an example of a use method of the tool 10, which is assumed to be connected to a substance container, when applying the substance silicone in a joint between different construction elements, for example a first tile side 115 mounted at a 90% angle to a second tile plate 116. The use method shows how the substance 110 is adapted to the design of the substance chamber which creates a tight-fitting barrier between the tile sides 115, 116 and the tool 10 which upon application forces the substance 110 and excess substance 110s in a forward movement in the direction of the arrow while the tool 10 is moved at a constant speed and in the same direction as the arrow whereby the material flow occurs in the chamber. The figure also shows that the transition between adjacent tile sides 113, 114 results in a completely smooth joint in that the tool head 12 has a length Bv which eliminates undesired movements in the transition between the shown joints with the width Bs between the tiles 113, 115; 114, 116. Of course, the construction elements do not have to be tiles but can be other types of building elements such as stone slabs, tiles, castings, etc. As already indicated, the construction elements can be located in the same plane and connect to each other with an intermediate joint in which the substance is pressed through use of the tool.

Figure 12 shows how the tool 10 is used together with silicone tubes 120 available on the market and passed over a standardized plastic pipe 121 provided with the silicone tube, the tool 10 being pressed onto the plastic pipe 121. The silicone tube 120 is connected to a joint syringe, not shown, whereby the silicone substance can then be pressed. into the tool and applied according to figure 11. Alternatively, a putty tube can be connected to the tool 10 and used accordingly.

Claims (10)

A tool (10) for applying a viscous substance, which tool (10) is provided with a tool body (11) and a tool head (12) connected to the tool body (11) which comprises a substance chamber (13), a substance inlet (14 ) to the substance chamber (13) and a substance outlet (15) from the substance chamber (13), which substance chamber (13) is formed with a chamber roof (16), from which several sides (21, 22, 23, 24) delimiting the substance chamber (13) ) and that said substance outlet (15) is located partly in the bottom of the substance chamber (13) and partly in one of the sides (24) of the substance chamber (13), another of the sides (23) being designed as a wiper with a wiper edge (80, 91, 101), characterized in that the substance outlet (15) in the side (24) of the chamber is delimited towards the chamber roof (16) by a choke (71) formed by a surface which forms an angle, 180 ° -a, where 10 ° <? <45 °, preferably 15 °, with the chamber roof (16) so that the total area of the substance outlet (15) in the side chamber (13) of the substance chamber (13) is less than the total area of the wiper in the substance chamber (13). Tool according to Claim 1, characterized in that all sides (21, 22, 23, 24) of the substance chamber (13) are flat. Tool according to one of Claims 1 to 2, characterized in that the throttling surface (71) is flat. Tool according to one of Claims 1 to 3, characterized in that the substance chamber (13) is provided with two flat sides (21, 22) which each form an angle of 90 ° to the chamber wiper and that the chamber roof (16) also forms an angle of 90 ° to the scraper of the chamber. Tool according to one of Claims 1 to 4, characterized in that the area of the substance outlet (15) in the side (24) of the chamber is equal to the area of the side (24). Tool according to one of Claims 1 to 5, characterized in that the wiper edge (80, 91, 101) has a profile which is either straight, arcuate or angular. Tool according to one of Claims 1 to 6, characterized in that the tool head is provided with at least two substantially flat outer abutment surfaces (25, 26), for abutment against two elements between which application of substance is to take place, which abutment surfaces are fixedly connected to the substance chamber (13), the substance chamber (13) being located between these at least two abutment surfaces (25, 26). Tool according to claim 7, characterized in that each abutment surface (25, 26) is provided with 2-5 pieces, preferably 3 pieces, wiper edges (41, 42, 43) between which respective wiper edges (41, 42, 43) a substance collecting recess (44, 45, 46, 47) is provided. Tool according to one of Claims 7 to 8, characterized in that the angle between the two abutment surfaces (25, 26) is 90 °, the abutment surfaces either facing out from the substance chamber (13) or facing the substance chamber (13). Tool according to one of Claims 7 to 8, characterized in that the two abutment surfaces (25, 26) on each side of the substance chamber (13) are arranged in the same plane.