WO2010099840A1

WO2010099840A1 - Repair nozzle

Info

Publication number: WO2010099840A1
Application number: PCT/EP2009/065945
Authority: WO
Inventors: Hermann J. Schwarze; Joachim Plotzitzka; Hans-Jörg Maier; Werner Moosmann
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2009-03-04
Filing date: 2009-11-27
Publication date: 2010-09-10
Also published as: EP2403654B1; UA99414C2; ES2577505T3; CA2754005C; DE102009011178A1; US20120168469A1; JP2012519069A; ZA201106452B; CN102413947A; RU2011140161A; AU2009341446B2; AU2009341446A1; RU2513447C2; BRPI0924747A2; JP2014221476A; CA2754005A1; DK2403654T3; EP2403654A1; CN102413947B; KR20110128912A

Abstract

The present invention relates to a repair nozzle (100, 200) for dispensing viscous materials (315) that can be used in the automotive field from a tank (313) comprising said materials by means of an associated dispensing gun (300) having a proximal product infeed side (101, 201) comprising means (114, 211) for releaseably attaching the repair nozzle (100, 200) to the tank (313) and at least one sealing element (109, 115, 209, 212) for providing a sealing potential between the repair nozzle (100, 200) and the tank (313).

Description

repairing

The present invention relates to a nozzle for the production, in particular for the adjustment and restoration and reproduction of material beads, in particular of adhesives and / or sealants with different surface structures in the automotive sector.

Such caterpillars are automatically applied by application robot in mass production in the automotive sector. The caterpillars are used for bonding sheet metal parts, insulation against sound or temperature influences or are used as a seal. The application or robotic nozzles used are generally made of metal and must have a long service life in order to prevent failure of the application robot due to a defective application nozzle in series production. Subsequent application of adhesives and / or sealants, for example, to restore or readjust such a structure in the motor vehicle sector, in particular after an accident, is not possible with the known application form via an application nozzle. The aftermarket, especially most garages, do not have a necessary application robot. In addition, the purchase of a specific application nozzle for the application due to the high cost of the application nozzle for the aftermarket, especially the repair market does not make sense.

The object of the invention is therefore to provide a nozzle for the aftermarket and in particular for the repair market for dispensing viscous materials in the automotive sector, to restore or reproduce the structures produced in mass production.

This invention is solved by the features of claim 1.

Advantageous embodiments of the invention are specified by the subclaims.

The basic idea of the invention is the use of a repair nozzle for dispensing viscous materials which can be used in the automotive sector from a container containing the viscous material, for example a cartridge or a tube or foil bag, by means of an associated dispensing gun. The repair nozzle has a proximal Produktzuführseite, which includes means for releasably securing the repair nozzle to the container and at least one sealing element to provide a possibility for sealing between the repair nozzle and the container.

The viscous materials used may be adhesives known in particular in the aftermarket and / or in series production of the motor vehicle sector. and / or sealants and / or sound and / or vibration damping materials, which may be viscous or highly viscous or pasty. These materials are contained in containers. In particular, known cartridges are conceivable for use as containers, which can be made of a plastic material or of aluminum, for example. Most of the cartridges have a cylindrical body, wherein on one side of a movable piston for squeezing the adhesive contained in the cartridge and / or sealant is provided and on the opposite side an outlet opening for dispensing the viscous material. The piston is displaced by applying a force within the cartridge so that the viscous material can be dispensed. Of course, the term "container" also refers to the use of suitable containers known to the person skilled in the art, in particular the use of known film and / or tubular bags.

Cartridge guns are particularly suitable as dispensing guns used. Pneumatically operated pistols are preferably used in which the viscous material can be dispensed from the container via a nozzle by means of a pneumatic system. These pistols are particularly suitable for use with a repair nozzle according to the invention, since compressed air is available in most workshops, whereby a user-friendly output of the viscous material can be made possible for the user. In particular, the use of a special compressed air gun for ejecting viscous to low-viscosity material, as described in International Patent Application PCT / EP2006 / 004600 is suitable. For the aspects relating to the caulking gun, reference may be made to the cited document, the disclosure of which supplements the disclosure of the present patent application in this respect. Also conceivable is the use of known in the art purely mechanically acting pistols. These are suitable, for example, for use in areas where no compressed air is available. Preferably, however, pneumatic pistols are used, since particularly in the automotive sector often highly viscous materials, such as adhesives and / or sealants are applied, so that the use of special pneumatic pistols, which can produce higher discharge pressures than purely mechanical pistols, especially suitable.

The repair nozzle is preferably made of plastic. Preferably, the repair nozzle is a disposable product. After dispensing the viscous material, the nozzle is disposed of. A cleaning of the nozzle is not provided here, so that saved working time and can be dispensed with further auxiliaries and cleaning agents for the removal of material residues. The means for releasably attaching the nozzle to the container are preferably provided on the proximal product feed side. This may in particular be a threaded region, which with a corresponding thread de range of the container can be engaged to attach the nozzle to the container. When using the repair nozzle with a foil and / or tubular bag as a container for the viscous material are preferably suitable, known in the art adapters or attachments are used, which have a range which a releasable attachment of the nozzle by means of the above means enable. When using a nozzle with a threaded portion, in particular an adapter is conceivable, which has a corresponding threaded portion.

In addition, in the region of the proximal Produktzuführseite a projecting collar for supporting the repair nozzle to the container can be provided. When a force acting on the repair nozzle, for example when placing the repair nozzle on a substrate for dispensing the viscous material, the repair nozzle is supported by the protruding collar on the container, so that in particular damage to the repair nozzle and / or the container and / or a Solution fixing the repair nozzle on the container by the action of force on the repair nozzle can be avoided. For some dispensing guns, the collar may also serve to support the repair nozzle on the dispensing gun. For this purpose, the repair nozzle is connected to the container via said connecting means and inserted together with the container in the dispensing gun. In this case, the repair nozzle preferably protrudes at least with its distal end out of an opening of the dispensing gun. The opening is dimensioned such that the collar of the repair nozzle on the proximal side can be supported on the opening-limiting parts of the dispensing gun. The opening is thus preferably smaller than the collar of the repair nozzle. When pressure is applied to the viscous material from the container via the dispensing gun, the container with the repair nozzle is pressed towards the product discharge side of the repair nozzle. Due to the projecting collar of the repair nozzle, the repair nozzle is supported on the dispensing gun, so that a displacement of the container with the repair nozzle is prevented and the viscous material can be dispensed via the repair nozzle.

The repair nozzle also has at least one sealing element for providing a sealing possibility between the repair nozzle and the container. By means of this sealing element, it can be ensured, in particular, that no material to be dispensed exits between the repair nozzle and the container, in particular in the region of the releasable attachment between the two components during the dispensing of material via the repair nozzle. The use of at least one such sealing element is necessary in particular because of the materials to be dispensed. These materials, in particular adhesives, sealants and / or sound and / or vibration damping materials, are usually viscous and / or highly viscous. An output of the materials through the nozzle takes place with great force and / or pressure, so that even the smallest gaps between the repair nozzle and could lead to the container to an unwanted material leakage. This leaked material can no longer be used as intended and may contaminate and / or endanger the dispensing gun, the work environment or the user himself. In addition, such unwanted material leakage could result in a pressure loss in the nozzle, which in particular can affect the application result, ie the formation of the applied bead.

In particular, the use of a sealing ring is conceivable as a sealing element, which is provided on the proximal side of the repair nozzle and in the attachment of the repair nozzle to the container with the container comes into contact so that a seal is made possible. Of course, other solutions are conceivable. In particular, alternatively or additionally, the means for releasable attachment may act as a sealing element and include a sealing function. In this case, in particular the above-mentioned use of a threaded portion as a means for releasable attachment is conceivable. By means of a precise design of the threads and a precise adaptation to the corresponding thread of the container, in particular with the smallest possible tolerances, a sealing function can be achieved even within the thread. The attachment between the repair nozzle and the container is thus self-sealing due to the precise design, in that the threaded portion of the repair nozzle is designed so that the threads engage tightly against the flanks of the corresponding thread of the container during assembly of the repair nozzle with a container. Thus, leakage of material to be dispensed can be prevented. In addition, penetration of material into the thread can be prevented, which would make it difficult to solve the attachment of the repair nozzle on the container. An unwanted waste of material and contamination of the work equipment and / or the work environment and / or the user himself can be averted by the Abdichtungsmöglichkeit.

The use of a repair nozzle according to the invention brings many advantages. In particular, surface structures which have been produced in an automated manner in the context of serial production in the motor vehicle sector can be restored or readjusted by repair shops, for example in the event of repair in the aftermarket and, in particular, in the repair market. In particular, accident damage such surface structures can be repaired in this way. On the use of an application robot, which in serial production for dispensing the viscous material, such as an adhesive and / or sealant for the preparation of the structures is necessary, can be dispensed with. Through the use of a repair nozzle according to the invention, therefore, the standard in the automotive industry in series production automatically applied viscous materials, especially in the aftermarket, such as in workshops, can be applied later, especially in case of repair. Another advantage is the equipment of the repair nozzle with a slit-shaped mouth opening on a distal product discharge side to issue a material caterpillar. This slot-shaped mouth opening has proven to be particularly advantageous for applying broad beads, wherein the substrate is wetted over a wide area with the material to be dispensed. Thus, depending on the choice of the material to be dispensed, in particular an outstanding adhesive and / or sealing action and / or sound and / or vibration-damping effect can be achieved. Preferably, the repair nozzle is used for dispensing viscous materials on substrates, which do not have large gaps, so that the use of a slot-shaped mouth opening is particularly suitable. The area applied over the repair nozzle according to the invention in the motor vehicle caterpillars are used in particular for bonding sheet metal parts, as insulation against sound or temperature influences or are used as a seal. The material bead is relatively wide in relation to its height whether the slot-shaped mouth opening. It is a clearly dimensioned corrugated flat caterpillar. This means that the width and / or the height and / or the appearance of the bead correspond to the design of the adhesive and / or sealant bead of the original equipment manufacturer, which has hitherto been achieved exclusively by robotic application. Moreover, the material bead dispensed via the repair nozzle is also without overspray. The user thus receives a bead of material with sharp and not with frayed edges. In addition, a material surface can be provided via the slot-shaped mouth opening, which has a closed film and thus provides improved bonding or sealing.

Further advantages result from the use of a robot nozzle which has a sealing element for providing a sealing possibility between the repair nozzle and the container in combination with a slot-shaped mouth opening. Due to the slot-shaped mouth opening, the pressure inside the nozzle increases in comparison to a conventional nozzle opening, which includes a much larger mouth area and allow for the same force and / or pressure a larger volume flow of material to be dispensed. When using a repair nozzle with a slot-shaped mouth opening, therefore, the equipment of the repair nozzle with one or more sealing elements is particularly useful and advantageous, since due to the high internal pressures of the repair nozzle even the smallest defects or gaps can lead to a faulty material outlet.

The use of a sealing element on the proximal product feed side in the region of a product feed opening of the repair nozzle has proven particularly advantageous, the sealing element being designed as a sealing lip ring extending in the proximal direction. The sealing lip ring preferably extends annularly around the product supply opening. Due to the proximal extension, the sealing lip ring projects in the direction of the container when the repair nozzle is fastened on a container. The sealing lip ring preferably extends in such a way that it comes into contact with the container during the attachment of the repair nozzle and thus effects a seal between the repair nozzle and the container.

A further advantage is the design of the repair nozzle with a jacket region, which preferably surrounds a product channel for transporting the material from the product supply side to the product delivery side, ribs projecting on the jacket region at least in the region of the attachment means for reinforcing the attachment means and / or for facilitating attachment Repair nozzle are provided on the container. In particular, when using a repair nozzle with a threaded portion of the use of ribs on the lateral surface is advantageous. The ribs allow reinforcement of the threaded area by avoiding deformation of the thread and providing a stiffening capability of the repair nozzle. Especially with a force acting on the repair nozzle in the application of material destruction of the thread can be avoided. In the design of the thread as a sealing element, the ribs increase the sealing function by the stiffening additionally. Even with large force and / or high pressure there is no deformation of the thread, so that a possibility of sealing between repair nozzle and container can be ensured in the assembled state. Another advantage of the ribs is the ease of attachment of the repair nozzle to the container. The ribs provide a good opportunity for the user to attach the repair nozzle, for example by twisting the same when using a thread as a connection technique.

A further advantage is the formation of a guide projection on the jacket area, in particular in order to facilitate a possibility of guiding the repair nozzle along an edge during the dispensing of the material. Preferably, the guide projection is provided on the distal discharge side of the repair nozzle. In this case, the projection may be integrally formed on the nozzle. In addition, the guide projection can be used by the user when using a repair nozzle with a slot-shaped mouth opening when attaching the repair nozzle on a container for detecting the course of the slot. A view of the slot-shaped mouth opening is no longer necessary.

Another advantage is the formation of a collar on the proximal Produktzuführseite for supporting the repair nozzle to the container. By using such a collar forces acting on the repair nozzle in particular can be transmitted to the container and damage to the repair nozzle can be avoided. Another advantage is the chamfered formation of the product feed opening limiting area at the proximal end of the repair nozzle to allow easy mounting of the repair nozzle with a container. Conceivable here is the equipment of the product feed opening bounding inner wall of the lateral surface with a chamfer such that in the region of the product supply opening a proximal open hopper shape is provided to facilitate insertion of the container into the product supply.

Another advantage of using a repair nozzle is to equip it with a product channel for transporting the material to be dispensed from the product delivery side to the product delivery side and with an end cap formed on the product discharge side having the slit-shaped orifice which is domed in the distal direction of the nozzle. This form has proven to be particularly advantageous. Preferably, the product channel tapers from the proximal product delivery side toward the distal product delivery side to increase the flow rate of the material within the product channel. Also, a slight taper is suitable to balance the pressure drop of the material due to the friction on the inner walls of the product channel. The equipment of the repair nozzle with a curved towards the distal product output side end cap allows a particularly simple production of the repair nozzle. In particular, the demoulding of repair nozzles made of plastic by injection molding is considerably simplified by a curved end cap. In addition, a repair nozzle with a domed end cap has excellent fluidic properties, so that the pressure drop of the material in the repair nozzle can be reduced. This nozzle shape is particularly suitable for applications in which no size adjustment of the material bead must be made. For example, a special repair nozzle is used, which can be equipped with a pre-fabricated for the material to be dispensed and / or for a particular application slot-like mouth opening. The user can be provided by such a repair nozzle in each case the correct orifice for the material to be dispensed and / or the application, so that errors can be avoided.

Another advantage of using a domed end cap on the distal product discharge side is the provision of the slot-shaped mouth opening over a dome top of the domed end cap. Under the buckling point is to be understood as the point of the curved end cap with which the end cap protrudes furthest in the distal direction of the repair nozzle. The extent of the slot-shaped mouth opening on the dome top is particularly advantageous in terms of flow technology. When the material is dispensed, it is also applied laterally in some areas because of the curvature of the slot-shaped mouth opening, so that the user receives a bead of material which wider than the pure diameter of the repair nozzle in the area of the distal product discharge side without the domed end cap.

As an alternative to equipping the repair nozzle with a domed end cap, the repair nozzle may also be equipped with a product channel for transporting the material from the product delivery side to the product delivery side, and with a shell-shaped mantle region extending trapezoidally in the distal direction, the base of the trapezoidal shell portion is disposed on the distal product discharge side. In this case, the repair nozzle can be subdivided into two regions, wherein in the proximal region of the repair nozzle, a first region can have a product passage that tapers slightly in the distal direction, to which the trapezoidal end region can adjoin in the distal region of the repair nozzle. The rejuvenation of the product channel again causes an increase in the flow rate of the material within the product channel and / or compensates for a pressure drop of the material due to the friction on the inner walls of the product channel. Preferably, the trapezoidal shaped skirt portion is hollow at the distal product discharge side so that the base of the trapezoidal skirt portion forms the slot-shaped mouth opening at the distal product discharge side. Of course, the slot-shaped mouth opening may also be formed only by parts of the base. With such a shaped jacket area repair nozzles can be produced with particularly wide slit-shaped mouth openings to deploy very wide material caterpillars. The trapezoidal design of the shell region has further advantages. It is conceivable for the user to cut the trapezoidal jacket region by cutting off parts of the jacket region in such a way that the trapezoidal jacket region no longer extends so far in the distal direction. Due to the trapezoidal design of the jacket region, severing a distal region of the jacket region is accompanied by a reduction of the base of the jacket region. In the case of a hollow shell portion described above, a described cutting would result in a reduction of the slot-shaped mouth opening, which now extends beyond the new base after the cutting area has been cut. The user is thus provided with a repair nozzle, wherein the slot-shaped opening can be adapted according to the material bead to be dispensed by cutting the jacket area. For this purpose, in particular markings and / or labels and / or preferred separation aids, such as cutting lines on the repair nozzle and in particular on the jacket area can be provided at which parts of the jacket area can be separated by the user to obtain specific slot-shaped nozzle openings. In particular for the motor vehicle sector, a trapezoidal design of the jacket region has proved to be particularly advantageous, wherein the jacket region can be cut to such an extent that a width between 1 cm and 12 cm can be set for the slot-shaped mouth opening. With such a range, a universally applicable repair nozzle can be provided be covered, which in particular in the automotive sector, the most common track widths and with the usual structures can be restored and / or readjusted.

A further advantage in equipping the nozzle with a product channel is the at least partially rotationally symmetrical design of the product channel, the axis of rotation extending from the proximal product feed side to the distal product output side.

Another advantage of the at least partially rotationally symmetrical design of the product channel is the provision of a slot-shaped mouth opening, which extends over the axis of rotation of the product channel.

A further advantage is the provision of a repair system for restoring structures in the automotive sector, comprising a repair nozzle, a dispensing gun and a container containing the material to be dispensed, the repair nozzle having a proximal Produktzuführseite, on the means for mounting on the container containing the material to be dispensed and at least one sealing element for providing a sealing possibility between the repair nozzle and the container are provided. By means of such a system, the user can readjust and / or restore the structures produced in series production automatically, without having to resort to an application robot, for example.

Another advantage of using such a repair system is the equipment of the repair nozzle with a distal product discharge side, wherein on the distal product discharge side, a slit-shaped orifice is provided to dispense a bead of material. This slot-shaped mouth opening has proven to be particularly advantageous to apply broad beads, wherein the substrate is wetted over a wide area with the material to be dispensed. Also, a material surface can be provided over the slot-shaped mouth opening, which has a closed film and thus provides improved bonding or sealing. LIST OF REFERENCE NUMBERS

100 repair nozzle

101 product feed side

102 product issue page

103 mouth opening

104 jacket area

105 product channel

106 rotation axis

107 collar

108 end cap

109 sealing lip ring

110 Mounting aid

111 reinforcing rib

112 Leadership lead

113 threaded sleeve

114 internal thread

115 sealing area

116 product feed opening

117 chamfer

200 repair nozzle

201 product feed side

202 product issue page

203 mouth opening

204 trapezoidal jacket area

205 product channel

206 rotation axis

207 collar

208 basis

209 sealing lip ring

210 threaded sleeve

211 female thread

212 Sealing area 214 Separation aids

216 product feed opening

300 caulking gun

301 handle

302 metering device

303 recording unit Carrier area Operating lever Gripping area Compressed air connection Pressure regulator Manometer Dispensing cap Opening cartridge External thread Viscous material Forehead area

The invention is explained in more detail below with reference to the drawings by way of example. Show

FIG. 1 shows a perspective view of a repair nozzle according to the invention with sealing elements,

FIG. 2 shows a side view of the repair nozzle from FIG. 1,

FIG. 3 shows a sectional view A-A of the repair nozzle from FIG. 2

FIG. 4 shows a detail B of the sectional side view of the repair nozzle from FIG. 3

FIG. 5 shows a partially cutaway side view of a repair system with a dispensing gun, a container and the repair nozzle of FIG. 1.

FIG. 6 shows a detail C of the repair system from FIG. 5

FIG. 7 shows a sectional side view of an alternative embodiment of a repair nozzle according to the invention with sealing elements

FIG. 1 shows a perspective view of a repair nozzle 100 according to the invention, which is used to dispense viscous materials used in the automotive sector, such as adhesives, sealants and / or sound and / or vibration damping materials, containers containing them, not shown, by means of an associated, not shown Dispensing gun is used. The repair nozzle 100 has a proximal product feed side 101 for releasably attaching the repair nozzle 100 to a container and a distal product discharge side 102 for dispensing the material onto a substrate. Provided on the proximal product feed side 101 is a product feed opening, which is followed by a product channel which is rotationally symmetrical essentially about a rotation axis 106 and which represents a connection for the material to be dispensed between the proximal product feed side 101 and the distal product output side 102. The product channel is enclosed by a sleeve-shaped jacket region 104 of the repair nozzle 100 which tapers slightly in the distal direction in a distal direction. Provided on the proximal product feed side 101 is a collar 107 protruding radially outward with respect to the axis of rotation 106, which enables a support of the repair nozzle 100 to a container. In particular, with a force acting on the repair nozzle 100 in the material dispensing, the repair nozzle 100 is supported with the collar 107 on the mounted container. The collar 107 thus serves to transmit power and, by providing a support possibility, prevents a possible destruction of the repair nozzle 100 during the dispensing of material. To the Collar 107 is formed in the proximal direction extending, not visible in this view sealing lip ring formed as a sealing element. The jacket region 104 has a threaded sleeve 113 on the proximal side. The threaded sleeve 113 encloses a concealed internal thread for attaching the repair nozzle 100 to a container. To the circumference of the threaded sleeve 113 projecting and extending in the axial direction mounting aids 110 are provided. The mounting aids 110 provide a good opportunity for the user to attach the repair nozzle 100 via the internal thread with a container. In particular for reinforcing and stabilizing the repair nozzle 100 and the internal thread, a plurality of projecting ribs 111 are provided on the jacket region 104, which adjoin some of the assembly aids 110 and extend on the outer surface of the jacket region 104 in the axial direction with respect to the rotation axis 106. In particular, with a force acting on the repair nozzle 100 in the material dispensing the ribs 111 can prevent the destruction of the repair nozzle 100 and the thread 114 by the stiffening effect. On its distal side, the jacket region 104 has a guide projection 112. This protrudes from the shell portion 104 and extends axially with respect to the axis of rotation 106. The guide projection 12 provides, in particular, a guiding capability of the repair nozzle 100 along one edge upon dispensing of the material and facilitates precise dispensing of material.

The dispensing of the material occurs via a slot-shaped mouth opening 103 provided on an end cap 108 on the product output distal side 102. The end cap 108 is curved in the distal direction of the repair nozzle 100 and the slot-shaped mouth opening 103 extends over the dome top of the curved end cap 108. In the present embodiment, the rotation axis 106 also passes through the slot-shaped mouth opening 103. With the slot-shaped mouth opening 103, material beads can be dispensed, which have a low application height compared to the application width on the substrate. This has great advantages, in particular in the case of bonding of components in the motor vehicle sector, since the largest possible area of the substrate should be provided with the material to be dispensed in order, for example, to achieve a sufficient adhesive and / or sealing effect, the thickness of the material being kept as low as possible should. By using the curved end cap 108 and the course of the slot-shaped mouth opening 103 on the dome top of the end cap 108, the output of a wider bead of material can be additionally ensured because the material to be dispensed at the lateral areas of the slot-shaped mouth opening 103 not only in the axial direction with respect to the rotation axis 106th , but also partially radially outward with respect to the axis of rotation 106 can be output. FIG. 2 shows a side view of the repair nozzle 100 from FIG. 1. At the proximal product supply side 101, the region of the jacket region 104 designed as a threaded sleeve 113 is formed to a greater extent than the remaining jacket region 104. The threaded sleeve 113 has the above mounting aids 110. To an assembly aid 1 10, a reinforcing rib 111 is formed, which extends axially in the distal direction on the jacket portion 104. Another reinforcing rib 1 11 provided on the other side of the repair nozzle 100 and not visible in the view shown. On the proximal side of the threaded sleeve 113 of the collar 107 is formed. The proximal end of the repair nozzle 100 on the proximal Produktzuführseite 101 forms a projecting sealing lip ring 109. In addition, the guide projection 112 can be seen on the distal product output side 102, which protrudes from the jacket portion 104 and partially protrudes in the distal direction in the curved end cap 108.

FIG. 3 shows a sectioned side view AA of the repair nozzle from FIG. 2. The repair nozzle 100 has a product channel 105 which is rotationally symmetrical about the axis of rotation 106 at least in regions. The product channel 105 provides a connection for the material to be dispensed between the proximal product delivery side 101 and the distal product delivery side 102. Thus, the product channel 105 connects the product delivery port 116 to the slot-shaped port 103 at the arched end cap 108. The product channel 105 tapers from the proximal product delivery side 101 towards the distal product discharge side 102 to increase the flow rate of the material within the product passage 105 and / or to compensate for a pressure drop of the material due to friction on the inner walls of the product passage 105. The product channel 105 is enclosed by the sleeve-shaped jacket region 104 of the repair nozzle 100. The jacket portion 104 has the reinforcing ribs 111 and is provided on the side of the proximal Produktzuführseite 101 with an internal thread 114 with which the repair nozzle 100 can be attached to a container with a corresponding external thread or mounted. The internal thread 114 is a precision thread, which is designed in such a way to the size of the corresponding external thread of a container, that a sealing area 1 15 a sealing function within the thread is achieved. The attachment between the repair nozzle 100 and a container is so self-sealing by the precise design by the internal thread 114 of the repair nozzle 100 is designed such that the threads in the assembly of the repair nozzle 100 with a container close to the flanks of the corresponding thread of the container invest. The external threads of the containers used are generally standardized and have a fixed size, so that by the precise formation of the threads of the internal thread 114 and a precise adaptation to the corresponding thread of the container, especially with the smallest possible tolerances, a sealing function already can be achieved within the thread. The internal thread 114 of the repair nozzle provides Thus, with the sealing portion 115, a first sealing element of the repair nozzle 100 ready. An unwanted or erroneous he leakage of material to be dispensed can be prevented and also a penetration of material into the thread can be avoided, which would make it difficult to solve the attachment of the repair nozzle 100 on the container.

In the configuration of the internal thread 114 as the first sealing element, the assembly aids and / or reinforcing ribs 11, which are not shown in this view, additionally increase the sealing function due to the stiffening. Even with large force and / or high pressure, there is almost no deformation of the internal thread 114, so that a sealing possibility between repair nozzle 100 and container can be ensured in the assembled state. Another advantage of the mounting aids and / or reinforcing ribs 111 is the ease of attachment of the repair nozzle 100 to the container. The mounting aids and / or reinforcing ribs 111 offer a good possibility for the user to attach the repair nozzle 100, for example when screwing the corresponding external thread of a container into the internal thread 114 of the repair nozzle 100.

Next, the sealing lip ring 109 is provided as a further sealing element in the region of the proximal Produktzuführseite 101. This encloses annularly the product feed opening 116 and extends in the proximal direction. Due to the proximal extension, the sealing lip ring 109 projects in the direction of the container when the repair nozzle 100 is fastened on a container. The extent of the sealing lip ring 109 is designed such that it comes into contact with the attachment of the repair nozzle 100 with the container, thus causing a seal between the repair nozzle 100 and container. Of course, it is conceivable that the repair nozzle 100 has only one of the sealing elements described.

Figure 4 shows a detailed view B of the sectioned side view of the repair nozzle 100 of Figure 3. As seen in the sectional view, the dichlicell ring 109 may form a right triangle with two equal sized catheters, with the right angle tip pointing in the proximal direction. The sealing lip ring 109 is integrally formed on the collar 107. However, the sealing lip ring 109 may be a separate component and / or connected to another part of the repair nozzle. It is also possible to manufacture the sealing lip ring 109 from a different material than the repair nozzle, for example to achieve an improved sealing effect. The sealing lip ring 109 encloses the product supply opening 116 annularly. The boundary region delimiting the product feed opening 116 from the abutting outer surface of the collar 107 with the inner wall of the jacket region 104 is chamfered in the present exemplary embodiment. This chamfered formation of the product feed opening 116 delimiting area at the proximal end of the repair nozzle allows a simple installation of the repair nozzle with a container. The chamfer provides a hopper mold open in the proximal direction in the region of the product feed opening 116 in order to facilitate insertion of the container into the product feed opening 116.

The repair system shown in FIG. 5 for the correction and / or restoration of structures in the motor vehicle sector consists of the repair nozzle 100 shown in FIG. 1, an applicator or cartridge gun 300 and a material 315 to be dispensed, such as a container containing adhesive and / or sealant 313. In the present case, a cartridge is used as a container 313. The cartridge has a substantially cylindrical body, wherein on one side a movable piston for squeezing out of the material contained in the cartridge is provided and on the opposite side a base with an outlet opening for dispensing the material. The outlet opening thereby provides a hollow cylindrical attachment which is arranged axially to the cylindrical body of the cartridge, but has a smaller diameter. The attachment is provided with an external thread, which can be brought into engagement with an internal thread of the repair nozzle 100.

Cartridge gun 300 has a handle 301 that provides a user and guide capability of cartridge gun 300. For this purpose, the handle 301 includes a handle portion 306, which may be provided with anti-slip means or may have an ergonomic shape to provide the user with a secure grip when working with the system. The handle 301 is provided with a support portion 304 to which a receiving unit 303 is connected to the handle 301. The receiving unit 303 has a hollow cylindrical shape and serves to receive the container 313 filled with the material 315 to be dispensed. The product is dispensed at a dispensing end 310 of the receiving unit 303. For this purpose, a metering device 302 is provided on the handle 301, by means of which the user can control the dispensing of the in the container 313 contained material 315 can regulate. In the present embodiment, it is a pneumatic cartridge gun 300, wherein the output of the material 315 is made possible by the use of compressed air. For this purpose, a compressed air connection 307 is provided on the handle 301. At this compressed air connection 307, the user can connect a pressure medium, such as a compressor. To regulate the pressure, a pressure regulator 308 is attached to the handle 301. By means of a manometer 309 provided on the handle 301, the user can read the pressure applied to the cartridge gun 300 and adjusted via the pressure regulator 308. In order to regulate the pressure for the application of the material 315 to be dispensed, the dosing unit 302 can be operated via an actuating lever 305, which is attached to the handle 301 and can be pivoted in the direction of the handle 301. About the degree of pivoting of the actuating lever 305 and the set air pressure on the pressure regulator 308, the output of in the container 313 located material 315 are regulated. In the receiving unit 303, a drive element, not shown, is provided for dispensing the material 315, which can be displaced within the receiving unit 303. By applying pressure to the driving element selbiges is moved and pushes the arranged in the receiving unit 303 container 313 with the material to be dispensed 315 towards the discharge end 310 of the receiving unit 303. The receiving unit 303 has at the discharge end 310 a cap 311 on. This closure cap 311 is connected in the present embodiment via a screw thread with the cylindrical receiving unit 303 and has a with the hollow cylindrical shape of the receiving unit 303 concentrically aligned opening 312. Via this opening 312, the material 315 can be dispensed from the container 313 located in the receiving unit 303.

To provide the system for commencing work, the repair nozzle 100 is connected to the container 313. For this purpose, the container 313 has an external thread 314 which can be brought into engagement with the corresponding internal thread of the repair nozzle 100. To start work with the system, the container 313 is inserted into the cavity of the receiving unit 313 such that the repair nozzle 100 protrudes from the receiving unit 303. Subsequently, the closure cap 311 is slid over the repair nozzle 100 and connected to the receiving unit 303 via the screw connection described above. The repair nozzle 100 projects in the installed state with through the opening 311 of the receiving unit 313 out. By applying pressure to the propelling element, not shown, for dispensing the material 315, the container 313 is pressed in the direction of the dispensing end 310 and is supported on the closure cap 311. The acting pressure does not move the container 313 together with the repair nozzle 100 due to the support, but moves the propulsion element within the container 313 so that the material 315 to be dispensed is squeezed out of the container 313, enters the product channel of the repair nozzle 100 and finally over the slit-shaped Orifice 103 can be issued.

FIG. 6 shows a detailed view C of the repair system from FIG. 5. The repair nozzle 100 is mounted on the container 313 containing the material 315 to be dispensed. For this purpose, the internal thread 114 of the repair nozzle 100 has been brought into engagement with a corresponding external thread 314 of the container. When assembled, the sealing lip ring 109 of the repair nozzle 100 adjoins an end region 316 of the container 313. In the present embodiment, a rotation of the two threaded portions 114, 314 to each other such that the sealing lip ring 109 is partially pressed into the end portion 316 of the container 313 and / or cuts to ensure a secure seal, even with production-related surface inaccuracies on the face region 316 , However, the sealing lip ring 109 may be flexible, for example be designed and adapt by screwing onto the external thread 314 the end portion 316 of the container, so that, for example, by means of a deformation of the sealing lip ring 109, a sealing function without cutting into the end portion 316 is formed. In the present embodiment, the repair nozzle 100 is sealed to the container 313 via two sealing elements. On the one hand via the threaded portions 114, 314 by providing a high-precision internal thread 114 of the repair nozzle, whereby a sealing region 115 is provided, on the other hand on the protruding sealing lip ring 109, which allows a sealing possibility at the end portion 316 of the cartridge 313.

FIG. 7 shows an alternative embodiment of a repair nozzle 200 with a proximal product feed side 201 and a product output distal side 202 and with a product passage 205. The product passage 205 connects a product feed port 216 on the proximal product feed side 201 to a slot-shaped mouth 203 on the product output distal side 202 Product channel 205 is designed in the proximal region of the repair nozzle 200 substantially rotationally symmetrical about an axis of rotation 206 and is enclosed in the direction of the distal product output side 202 by a trapezoidal jacket 204 having the slot-shaped mouth opening 203. The trapezoidal cladding region 204 is configured such that a base 208 is disposed on the product output distal side 202. The slot-shaped mouth opening 203 extends over the base 208 of the trapezoidal shell portion 204. Further, on the proximal Produktzuführseite 201 a radially outwardly with respect to the axis of rotation 206 projecting collar 207 is provided which serves to support the repair nozzle 200 to a container. The trapezoidal jacket region 204 has on the surface a plurality of separation aids 214 arranged parallel to the base 208. These separation aids 214 represent markings at which the user can sever parts of the trapezoidal jacket region 204. Due to the trapezoidal shape of the shell portion 204, severing a part at the distal product discharge side 202 is accompanied by a reduction in the base 208. Thus, by severing a portion of the trapezoidal shell portion 204 by reducing the size of the base 208, the slit-shaped orifice 203, which extends across the base 208, is also reduced in size. The user can in this way by separating parts of the trapezoidal shell portion 204 vary the size of the slit-shaped orifice opening 203 to adjust this to the dispensed material or the size of the desired bead of material.

The cladding region 204 has reinforcing ribs, not shown, and is provided on the side of the proximal Produktzuführseite 201 with an internal thread 211, with which the repair nozzle 200 can be mounted on a container with a corresponding external thread. The internal thread 211 is a precision thread described above which provides a first sealing element via a sealing region 212. WEI ter is in the region of the proximal Produktzuführseite 201 a sealing lip ring 209 provided as a further sealing element. This encloses annularly the product feed opening 216 and extends in the proximal direction. Due to the proximal extension, the sealing lip ring 209 protrudes in the direction of the container when the repair nozzle 200 is fastened on a container. The extent of the sealing lip ring 209 is designed such that it comes into contact with the attachment of the repair nozzle 200 with the container and thus causes a seal between the repair nozzle 200 and container. Of course, it is conceivable that the repair nozzle 200 has only one of the sealing elements described.

Claims

claims

A repair nozzle (100, 200) for dispensing automotive grade viscous materials (315) from a container (313) containing them by means of an associated dispensing gun (300) having a proximal product feed side (101, 201), said means (114, 211 ) for releasably securing the repair nozzle (100, 200) to the container (313) and at least one sealing element (109, 115, 209, 212) for providing a seal between the repair nozzle (100, 200) and the container (313).

2. repair nozzle (100, 200) according to claim 1, characterized in that a distal product discharge side (102, 202) is provided which has a slot-shaped mouth opening (103, 203) to issue a bead of material.

3. Repair nozzle (100, 200) according to any one of claims 1 or 2, characterized in that at least one sealing element (109, 209) on the proximal Produktzuführseite (101, 201) on a product feed opening (116, 216) is provided and as in the proximal direction extending sealing lip ring (109, 209) is configured.

4. repair nozzle (100, 200) according to any one of the preceding claims, characterized in that on a jacket portion (104, 204) at least in the region of the fastening means (114 211) projecting ribs (110, 111) for reinforcing the fastening means (114, 211 ) and / or for facilitating the attachment of the repair nozzle (100, 200) to the container (313) are provided.

5. repair nozzle (100, 200) according to any one of the preceding claims, characterized in that on the jacket region (104, 204) a guide projection (112) is integrally formed to facilitate a guidance possibility of the repair nozzle (100, 200) along an edge.

6. repair nozzle (100, 200) according to any one of the preceding claims, characterized in that on the proximal Produktzuführseite (101, 201) a collar (107, 207) for supporting the repair nozzle (100, 200) integrally formed on the container (313) is.

7. repair nozzle (100, 200) according to any one of the preceding claims, characterized in that the Produktzuführöffnung (116, 216) limiting area is chamfered to allow easy installation of the repair nozzle (100, 200) with a container (313) ,

8. repair nozzle (100) according to any one of the preceding claims, characterized in that a product channel (105) is provided to transport the vikose material (315) from the Produktzuführseite (101) to the product discharge side (102) and that the slot-shaped mouth opening (103) having the end cap (108) formed on the product discharge side (102) which is curved in the distal direction of the repair nozzle (100).

9. repair nozzle (100) according to claim 8, characterized in that the slot-shaped mouth opening (103) extends over a camber of the domed end cap (108).

10. repair nozzle (200) according to one of claims 1 to 7, characterized in that a product channel (205) is provided to transport the viscous material (315) from the Produktzuführseite (201) to the product discharge side (202) and that a a slot-shaped mouth opening (203) having the mantle portion (204) extending in a trapezoidal distal direction, the base (208) of the trapezoidal mantle portion (204) being located on the product output distal side (202).

11. repair nozzle (100, 200) according to any preceding claim, characterized in that the product channel (105, 205) at least partially rotationally symmetrical about an axis of rotation (106, 206) is designed.

12. repair nozzle (100, 200) according to claim 11, characterized in that the slot-shaped orifice (103, 203) on the axis of rotation (106, 206) of the product channel (105, 205) extends.

A repair system for restoring structures in the automotive field, comprising a repair nozzle (100, 200), a dispensing gun (300), and a container (313) containing a viscous material (315), the repair nozzle (100, 200) having a proximal product feed side (101, 201) and means (114, 211) for releasably securing the repair nozzle (100, 200) to the container (313) and at least one sealing element (109, 115, 209, 212) for providing a sealing possibility between the repair nozzle ( 100, 200) and the container (313).

14. A repair system according to claim 13, characterized in that a distal product discharge side (102, 202) is provided, which has a slot-shaped mouth opening (103, 203) to issue a bead of material.