KR20110052709A - Repair nozzle - Google Patents

Abstract

The present invention relates to a repair nozzle (10, 20) for discharging adhesive and / or sealant (115) usable in the automotive field from an associated cartridge gun (100) from a cartridge (113) comprising adhesive and / or sealant. And the repair nozzle comprises means for detachably fastening the repair nozzle (10, 20) to the cartridge (113) and protruding collars (16, 26) for support on the cartridge gun (100). Said repair nozzle (10) having a proximal product feed end (11, 21) and a distal product discharge end (12, 22) comprising slotted openings (13, 23) for discharging adhesive and / or sealant beads; , 20) is used in the automotive industry for the production, in particular for readjustment and reconstitution of adhesives and / or sealants for structures.

Description

Repair nozzle {REPAIR NOZZLE}

The present invention relates to nozzles for preparing, in particular regenerating and restoring adhesive and / or sealant beads for structures in the automotive sector.

In the automotive field, mass production of beads and the like is automatically applied by application robots. Beads serve to adhesively bond sheet metal or insulation to noise or temperature. The robot nozzles used are generally made of metal and have a long service life to prevent failure of the application robot due to defective robot nozzles during mass production. In particular after the accident, continuous application of adhesives and / or sealants, for example for repairing or regenerating defective structures in the automotive field, is not possible with known application modes using robotic nozzles. The aftermarket, and most car shops in particular, do not have the essential applications at their disposal. In addition, purchasing a special robot nozzle for a particular case is not practical in the parts market, especially in the repair market, due to the high price of the robot nozzle.

It is therefore an object of the present invention to provide a nozzle for releasing adhesives and / or sealants in the automotive sector in the aftermarket and especially in the aftermarket to repair and / or regenerate mass produced structures.

The invention is achieved by the features of claim 1.

Advantageous configurations of the invention are indicated in the dependent claims.

The basic idea of the present invention is to discharge the proximal product feed end comprising means for detachably fastening the nozzle to the cartridge and a protruding collar for support on the cartridge gun and / or the cartridge itself, and adhesive and / or sealant beads For discharging adhesives and / or sealants usable in the automotive sector from cartridges and / or tubular bags or film pouches by means of associated dispensing guns, eg cartridge guns, with distal product discharge ends comprising slotted openings for Use of nozzles.

The adhesives and / or sealants used are preferably high viscosity adhesives and / or sealants conventionally used in the automotive sector, in particular for mass production. These adhesives and / or sealants are contained in the cartridge. These cartridges may for example be constructed of plastic material or aluminum. Generally, the cartridge includes a cylindrical body, a movable piston provided at one end to indicate the adhesive and / or sealant contained in the cartridge and an outlet hole provided at the opposite end for the discharge of the adhesive and / or sealant. The piston may be displaced by applying a force inside the cartridge, so that the adhesive and / or sealant may be ejected. It goes without saying that similar and suitable containers, especially tubular bags, known to those skilled in the art can also be used. In the latter case of tubular bags, the use of known adapters is suitable for fitting the nozzles according to the invention, so that the means for detachable fastening of the nozzles are combined with the adapter and not with the tubular bag.

Dispensing guns suitable for use, for example tubular bags and / or cartridge guns, are in particular pneumatic guns, and adhesives and / or sealants may be ejected from the cartridge through the nozzle by a pneumatic system. These guns are particularly suitable for use with the repair nozzles according to the invention, since compressed air is available in most car shops, allowing the user to power-saving the release of adhesives and / or sealants. As described in international patent application PCT / EP2006 / 004600, special compressed air guns for discharging pastries with low viscosity materials are particularly suitable for use. As aspects relating to the cartridge gun are contemplated, reference may be made to the enumerated references, the content of which supplements the content of the patent application of the present invention in this respect. Purely mechanically actuating cartridge guns known to those skilled in the art are also feasible. They are suitable for use, for example, in areas where compressed air is not available. However, the use of pneumatically actuated cartridge guns is preferred, especially in automotive applications, where viscous adhesives and / or sealants are often applied, resulting in special pneumatic cartridges that can generate higher display pressures than purely mechanically actuated guns. This is because the use of the gun is particularly appropriate.

The repair nozzle is preferably made of plastic. Preferably, the repair nozzle is a disposable product. After discharging the adhesive and / or sealant the nozzle is discarded. No cleaning of the nozzle is provided in this case, thus avoiding working time and without the need for other aids or cleaning materials to remove adhesive and / or sealant residue. Means for detachably fastening the nozzle to the cartridge are preferably provided at the proximal product feed end. It may in particular be a screw area, which may be engaged with a corresponding threaded area of the cartridge to fasten the nozzle to the cartridge. It is also preferred that a protruding collar is provided in the region of the proximal product feed end to support the repair nozzle on the cartridge gun. In order to use the repair nozzle, the protruding collar is preferably connected to the cartridge via said connecting means and inserted together with the cartridge into the cartridge gun. In this case, the repair nozzle preferably protrudes out of the hole in the cartridge gun at least at its distal end. The hole is dimensioned such that the collar of the repair nozzle may be at the proximal end at the portion of the cartridge gun defining the hole. The hole is therefore preferably smaller than the collar of the repair nozzle. To discharge the adhesive and / or sealant out of the cartridge, the cartridge is exposed to pressure through the cartridge gun and the cartridge with the repair nozzle is pressed in the direction of the distal product discharge end of the repair nozzle. As a result of the protruding collar of the repair nozzle, the repair nozzle will support the cartridge gun so that displacement of the cartridge with the nozzle is prevented and adhesive and / or sealant may be ejected through the repair nozzle.

The repair nozzle includes a slotted opening at the distal product discharge end to discharge the adhesive and / or sealant beads. This slotted opening has proved particularly advantageous for applying wide beads and the substrate is wetted over a large area with the adhesive and / or sealant such that good adhesion and / or sealing effects may be achieved. Preferably, the adhesive and / or sealant are not applied in areas with large spacing dimensions using repair nozzles, making the use of slotted openings particularly suitable. Beads applied in the automotive field using repair nozzles according to the invention serve to seal or bond insulation or sheet metal parts against noise or temperature in order to absorb sound or vibration.

The use of repair nozzles in accordance with the present invention gives many advantages. In particular, structures which have been produced automatically in connection with mass production in the automotive sector may be regenerated or repaired by car shops, for example in the parts market and especially in the repair market. Accidental damage to these structures may in particular be repaired in this way. The use of application robots, which are essential for mass production, to apply adhesives and / or sealants to fabricate structures, may be omitted. By using a repair nozzle according to the invention, adhesives and / or sealants which are used as standards in the automotive sector and which are automatically applied in mass production may be applied later, especially in the aftermarket, for example in automotive shops, especially in the case of repairs. The slotted opening of the repair nozzle has other advantages. Slotted design allows specific adhesive and / or sealant beads to be ejected. The beads are relatively wide in height when considering the slotted openings. The beads are neatly dimensioned rippled flat beads, ie the width and / or height and / or appearance of the beads correspond to the design of the originally produced adhesive and / or sealant beads that have been achieved so far only by robotic applications. In the process, the use of adhesive and / or sealant beads discharged by the repair nozzle eliminates further overspray. Applicants thus obtain adhesives and / or sealant beads with sharp, unworn edges. Slotted openings may also be used to provide an adhesive and / or sealing area that shows a continuous film to provide an improved adhesive bond or seal.

Another advantage of using a repair nozzle is that the nozzle is provided with a product channel for conveying adhesive and / or sealant from the product supply end to the product discharge end and is formed on the product discharge end and includes a slotted opening and the distal direction of the nozzle. A curved end cap is provided. This shape has proved to be particularly advantageous. The product channel is preferably narrowed gradually from the proximal product feed end toward the distal product discharge end, thereby increasing the flow rate of the adhesive and / or sealant in the product channel. A slight slope is also suitable to compensate for the pressure drop experienced by the adhesive and / or sealant due to friction against the inner wall of the product channel. Providing a repair nozzle with an end cap that is bent in the direction of the distal product discharge end enables particularly simple fabrication of the repair nozzle. In particular, the demolding of repair nozzles made of plastic using the injection molding process is considerably simplified by the curved end caps. In addition, repair nozzles with curved end caps exhibit good flow characteristics, so that the pressure drop experienced by the adhesive and / or sealant in the repair nozzle may be reduced. This nozzle shape is particularly suitable when the sealant and / or adhesive beads are not sized. For example, special repair nozzles may be used, and the repair nozzles may be provided with slotted openings that are prefabricated for the adhesive and / or sealant to be ejected and / or for a particular use case. By using such a repair nozzle, the user may be provided with the correct opening for the adhesive and / or sealant and / or use case to be ejected in all cases, thereby avoiding errors.

Another advantage of the use of the curved end cap at the distal product discharge end is that a slotted opening is provided beyond the vertex of the curved end cap. The peak of the curve is to be understood here as meaning the point of the curved end cap from which the end cap protrudes farthest in the distal direction of the repair nozzle. Extension of the slotted opening beyond the peak of the curve is particularly advantageous in terms of flow. When the adhesive and / or sealant are discharged, due to the curvature of the slotted openings, the adhesive and / or sealant are discharged laterally in many places, so that the user can see the net diameter of the repair nozzle in Wide product beads are obtained.

As an alternative to providing a repair nozzle with a curved end cap, the repair nozzle has an end region formed in the product channel and a product channel for conveying the adhesive and / or sealant from the product supply end to the product discharge end and including a slotted opening. It may be provided, wherein the end region extends trapezoidally in the distal direction, and the base of the trapezoidal end region is arranged at the distal product discharge end. In order to increase the flow rate of the adhesive and / or sealant in the product channel and / or to compensate for the pressure drop experienced by the adhesive and / or sealant due to friction against the inner wall of the product channel, the product channel is here provided with a proximal product feed. It is preferably formed tapered in the direction from the end to the distal product discharge end. Preferably, the trapezoidal end region is hollow at the distal product discharge end such that the base of the trapezoidal end region forms a slotted opening at the distal product discharge end. It goes without saying that the slotted opening may be formed by only a portion of the base. According to the end region of this configuration, in order to discharge very wide adhesive and / or sealant beads, a repair nozzle with a particularly wide slotted opening may be produced. The trapezoidal design of the end region also has other advantages. By cutting a portion of the end region in such a way that the trapezoidal end region no longer extends far in the distal direction, it is feasible for the trapezoidal end region to be cut to size by the user. Due to the trapezoidal design of the end region, cutting of the distal region of the end region is associated with a reduction in the size of the base of the end region. In the case of the hollow end region described above, cutting to the size described above reduces the size of the slotted opening extending beyond the base, which is new once the end region is cut to size. . Thus, the user is provided with a repair nozzle in which slotted holes may be fitted into the product beads of the adhesive and / or sealant to be ejected by cutting the end area to size. To this end, markings and / or letters and / or preferred cutting lines to assist cutting may be provided on the repair nozzle and in particular on the end area, the cutting line portion of the end area being cut by the user so that the slug-shaped nozzle hole You can also get Especially for the automotive field, a trapezoidal design of the end region has proved to be particularly advantageous, in which the end region may be cut to size in such a way that a width of 1 cm to 12 cm may be achieved for the slotted opening. There may be provided a general purpose repair nozzle having such an area and in particular comprising bead widths most common in the automotive sector, whereby the general structure may be regenerated and / or restored.

Another advantage of providing a nozzle with product channels is the rotationally symmetrical configuration of the product channels, at least in some places, with the axis of rotation extending from the proximal product feed end to the distal product discharge end.

Another advantage of the rotationally symmetrical configuration is that, at least in some places, slotted openings are provided that extend beyond the rotation axis of the product channel.

Another advantage is to provide a repair system for regenerating structures in the automotive sector, consisting of a repair nozzle, a cartridge gun and a cartridge containing adhesive and / or sealant, said repair nozzle providing a proximal product supply end and a distal product discharge. An end, wherein the proximal product feed end is provided with means for fitting to a cartridge containing adhesive and / or sealant and supporting on the cartridge gun and / or cartridge itself to eject the adhesive and / or sealant from the carriage A protruding collar is provided and a distal product outlet end is provided with a slotted opening for dispensing adhesive and / or sealant beads to repair and / or regenerate the structure in the automotive sector. With such a system, a user may, for example, automatically reproduce and / or recover mass produced structures without using an application robot.

1 shows a perspective view of a repair nozzle according to the invention with a curved end portion.
2 is a perspective view of an alternative embodiment of a repair nozzle according to the invention with a trapezoidal end portion.
3 shows a partial side cross-sectional view of a repair system having a cartridge gun, cartridge and repair nozzle from FIG. 2.

1 shows a repair nozzle 10 according to the invention, wherein the repair nozzle 10 is associated with adhesives and / or sealants usable in the automotive field from cartridges (not shown) comprising adhesives and / or sealants. Used for ejection by cartridge gun (not shown). The repair nozzle 10 includes a proximal product supply end 11 that may detachably fasten the repair nozzle 10 to the cartridge, and a distal product discharge end 12 for discharging the adhesive and / or sealant to the substrate. . The proximal product feed end 11 is provided with a product channel 14 which is substantially rotationally symmetric about the axis of rotation 15 at least here and there. The product channel 14 constitutes a connection for the adhesive and / or sealant between the proximal product feed end 11 and the distal product discharge end 12. Product channel 14 includes an internal screw (not shown) such that repair nozzle 10 can be fitted to the cartridge using a corresponding external screw. In order to discharge the adhesive and / or sealant, an end cap 17 is provided at the distal product discharge end 12, which comprises a slotted opening 13 for discharging the adhesive and / or sealant. The end cap 17 is bent in the distal unidirectional direction of the repair nozzle 10 and the slotted opening 13 extends beyond the bend of the curved end cap 17. In this exemplary embodiment, the axis of rotation 15 further extends through the slotted opening 13. With the slotted opening 13, beads of adhesive and / or sealant having a small application height on the substrate as compared to the application width may be discharged. This has a particularly significant advantage in the adhesive bonding of components, especially in the automotive sector, since adhesives and / or sealants are provided in the region of the largest substrate possible to achieve sufficient adhesion and / or sealing effect, The thickness of the adhesive and / or sealant layer should be kept as small as possible. By using the curved end cap 17 and as a result of the profile of the slotted opening 13 beyond the curvature of the end cap 17, it is additionally possible to ensure the discharge of a relatively wide bead because the adhesive and / or Or because the sealant can be discharged not only in the axial direction with respect to the rotation axis 15 but also radially outward with respect to the rotation axis 15 in the end region of the slotted opening 13. In addition, the proximal product feed end 11 is provided with a collar 16 which projects radially outward with respect to the axis of rotation 15 and serves to support the repair nozzle 10 on the cartridge gun and / or the cartridge itself. .

2 shows an alternative embodiment of a repair nozzle 20 having a proximal product supply end 21 and a distal product discharge end 22. At the product outlet end 22, the repair nozzle 20 comprises a product channel 24 which is rotationally symmetric about the axis of rotation 25. The trapezoidal end region 27 comprising a slotted opening 23 adjoins the product channel 24 in the direction of the distal product outlet end 22. The trapezoidal end region 27 is configured such that the base 28 is arranged at the distal product discharge end 22. The slotted opening 23 extends beyond the base 28 of the trapezoidal end region. Also at the proximal product feed end 21, a collar 26 is provided which projects radially outward with respect to the axis of rotation 25 and serves to support the repair nozzle 20 in the cartridge gun. The trapezoidal end region 27 comprises a plurality of cutting lines 29 arranged on a surface parallel to the base 28. These cutting lines 29 constitute an indication by which a user may cut a part of the trapezoidal end region 27. Due to the trapezoidal shape of the end region 27, cutting off a portion at the distal product outlet end 22 involves a reduction in the size of the base 28. Thus, the cutting of a portion of the trapezoidal end region 27 causes a decrease in the size of the base 28, thereby reducing the size of the slotted opening 23 extending beyond the base 28. Thus, by cutting off a portion of the trapezoidal end region 27, the user may change the size of the slotted opening 23 to adjust for the size of the adhesive and / or sealant or desired bead to be ejected.

The repair system shown in FIG. 3 for the regeneration and / or repair of structures in the automotive sector comprises a trapezoidal repair nozzle 20, a cartridge gun 100 and an adhesive and / or sealant 115 shown in FIG. 2. It consists of a cartridge 113. It will be appreciated that other repair nozzles 20 may be used, for example the repair nozzle shown in FIG. 1 having an end cap formed on the product outlet end and including a slotted opening and curved in the distal direction of the nozzle. none.

The cartridge gun 100 includes a handle 101 that allows a user to operate and guide the cartridge gun 100. To this end, the handle 101 includes a grip area 106, which may be provided with non-slip means or may have an ergonomic shape, to provide a reliable hold to the user when working with the system. The handle 101 is provided with a mounting area 104 to which the receiving unit 103 is coupled to the handle 101. The receiving unit 103 has a hollow cylindrical shape and serves to receive the cartridge 113 filled with the adhesive and / or sealant 115 to be discharged. Product is discharged at the delivery end 110 of the receiving unit 103. For this purpose a metering device 102 is provided on the handle 101, by which the user can regulate the discharge of the adhesive and / or sealant 115 in the cartridge 113. In this exemplary embodiment, the cartridge gun 100 acts pneumatically, and the use of compressed air allows for the discharge of the adhesive and / or sealant 115. The handle 101 is provided with a compressed air port 107 for this purpose. The user may connect a pressure medium, such as a compressor, to this compressed air port 107. The pressure is regulated by a pressure regulator 108 fixed to the handle 101. Using a pressure gauge 109 provided on the handle 101, a user may read the pressure applied to the cartridge gun 100 and adjusted through the pressure regulator 108. In order to regulate the pressure for the discharge of the adhesive and / or sealant 115, the metering unit 102 is mounted on the handle 101 and by an actuating lever 105, which may be pivoted towards the handle 101. It may work. Discharge of the adhesive and / or sealant 115 located in the cartridge 113 may be controlled by the degree of pivot rotation of the actuating lever 105 and the air pressure established in the pressure regulator 108. In the accommodating unit 103, a propeling element (not shown) is provided, which may be disposed in the accommodating unit 103 for discharging the adhesive and / or sealant 115. By applying the propeller element pressure, the cartridge 113 is arranged and arranged in the receiving unit 103 toward the delivery end 110 of the receiving unit 103 with the adhesive and / or sealant 115 being discharged. To exert strength. The receiving unit 103 includes a closing cap 111 at the delivery end 110. In the present exemplary embodiment, this closing cap 111 comprises a hole 112 connected to the cylindrical receiving unit 103 via a thread and aligned concentrically with the receiving unit 103 of the hollow-cylindrical shape. Through this hole 112 the adhesive and / or sealant 115 may be ejected from the cartridge 113 located in the receiving unit 103. In addition, in the present exemplary embodiment, the aperture 112 of the system in which the trapezoidal repair nozzle 20 is used is configured to include a slot extending radially outward with respect to the closing cap 111, wherein the slot, Where the trapezoidal repair nozzle 20 is fitted, the dimensions are such that the closing cap 111 may be pressed over the trapezoidal end region 27 of the repair nozzle 20 to fit into the receiving unit 103. Have

In order to prepare the system to start work, a repair nozzle 20 is connected to the cartridge 113. To this end, the cartridge 113 comprises an outer screw 114 that may be engaged with a corresponding inner screw on the product channel 24 of the repair nozzle 20. To begin work with the system, the cartridge 113 is introduced into the cavity of the receiving unit 113 in such a way that the repair nozzle 20 protrudes out of the receiving unit 103. The closing cap 111 is then pressed over the trapezoidal end region 27 of the repair nozzle 20 and connected to the receiving unit 103 by the screw fastening described above. When fitted, the repair nozzle 20 protrudes with the product channel 24 through the hole 111 and out of the receiving unit 113. By applying pressure to a propeling element (not shown) to eject the adhesive and / or sealant 115, the cartridge 113 is forced toward the delivery end 110 and supported by the closing cap 111. do. In order to ensure the fixed maintenance of the repair nozzle 20, a collar 26 is provided. The collar is larger than the hole 112 in the closing cap 111 so that the repair nozzle 20 is connected to the closing cap 111 in the case of movement of the cartridge 113 resulting from the introduced pressure and thus the repair nozzle 20. Supported may be guaranteed. Due to this support arrangement, the pressure applied does not move the cartridge 113 together with the repair nozzle 20, but rather moves the propeling element into the cartridge 113, so that the adhesive and / or sealant 115 is removed from the cartridge ( Pushed out of 113, it may enter the product channel 24 of the repair nozzle 20 and finally exit through the slotted opening 23. In order to adjust the desired bead width for the adhesive and / or sealant 115, the user is directed to the structure and / or adhesive and / or sealant 115 to be recycled and by the cutting line 29 on the trapezoidal end region 27. Correspondingly, the area of the predetermined repair nozzle 20 may be removed so that the opening 23 is smaller as the user further removes from the trapezoidal end area 27 due to the trapezoidal design of the end area 27. You lose. With this system, very wide beads of adhesive and / or sealant 115 may be discharged due to the use of repair nozzles 20 with slotted openings 23, and the bead height may be kept as small as possible. Beads applied in this manner with the wetted area of the substrate as wide as possible allow for good adhesive bonding and / or sealing and regeneration and / or repair of structures automatically generated in the automotive sector.

10: repair nozzle 100: cartridge gun
11: product feed end 101: handle
12: product discharge end 102: metering means
13: opening 103: receiving unit
14: product channel 104: mounting area
15: rotation axis 105: operating lever
16: color 106: grip area
17: end cap 107: compressed air connection
20: repair nozzle 108: pressure regulator
21: product feed end 109: pressure gauge
22: product discharge end 110: delivery end
23: opening 111: closing cap
24: product channel 112: hole
25: rotation axis 113: cartridge
26: collar 114: external thread
27: trapezoidal end region 115: adhesive and / or sealant
28: bass
29: cutting line

Claims (7)

Repair nozzles 10, 20 for ejecting adhesives and / or sealants usable in the automotive field from the cartridge 113 comprising adhesive and / or sealant 115 by an associated cartridge gun 100, the repair nozzles The proximal product feed end comprises means for detachably fastening the repair nozzles 10, 20 to the cartridge 113 and protruding collars 16, 26 for support on the cartridge gun 100. Repair nozzles (10, 20) having a distal product discharge end (12, 22) having 11, 21, and also including slotted openings (13, 23) for discharging adhesive and / or sealant beads. A product channel (14, 24) is provided for transferring adhesive and / or sealant (115) from the product feed ends (11, 21) to the product discharge ends (12, 22). A repair nozzle 10 comprising slotted openings 13, 23 and having an end cap 17 bent in the distal direction of the repair nozzles 10, 20 formed on the product outlet ends 12, 22. 20). The repair nozzle (10, 20) according to claim 2, wherein the slotted opening (13, 23) extends beyond the vertex of the curved end cap (17). A product channel (14, 24) is provided for transferring adhesive and / or sealant (115) from said product feed ends (11, 21) to said product discharge ends (12, 22). An end region 27 is formed in the product channels 14, 24, which includes the shaped openings 13, 23 and extends trapezoidally in the distal direction, and the base 28 of the trapezoidal end region 27 is distal to the distal portion. Repair nozzles 10, 20 arranged at product outlet ends 12, 22. 5. The repair nozzle (10, 20) according to claim 2, wherein the product channel (14, 24) is configured to be rotationally symmetric about the axis of rotation (15, 25) at least in part. 6. 6. Repair nozzle (10, 20) according to claim 5, wherein the slotted opening (13, 23) extends beyond the axis of rotation (15, 25) of the product channel (14, 24). A repair system for repairing a structure in the automotive sector, consisting of a repair nozzle (10, 20), a cartridge gun (100) and a cartridge (113) having an adhesive and / or sealant (115), said repair nozzle (10) 20 includes a proximal product feed end 11, 21 and a distal product discharge end 12, 22, wherein the proximal product feed end 11, 21 has a cartridge 113 having an adhesive and / or sealant 115. Means are provided for fitting onto the cartridge gun 100 for discharging the adhesive and / or sealant 115 from the cartridge 113. And distal product outlet ends 12, 22 are provided with slotted openings 13, 23 for dispensing the adhesive and / or sealant beads for restoring the structure in the automotive field. Repair system for the body to recover.

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