DE102010029675A1 - Rotating device for nozzle unit for applying viscous adhesive mass into gap between window pane and profile frame, has scanning unit connected with nozzle member, where deviation of contour is produced along contour of member - Google Patents

Abstract

The device (18) has a scanning unit (19) connected with a nozzle member (11) in a torque-proof manner. A scanning element (22) i.e. contactless sense element, of the scanning unit is coupled with a contour of a window, where the contour corresponds to a contour gradient of a vertical order plane of the window. Deviation of the contour from a straight line is produced along a contour of the nozzle member during movement of the nozzle member. The scanning element is designed as a rotating body such as ball, cylinder, cone or a tab, where the rotating device comprises a pressure device.

Description

The invention relates to a rotating device for a nozzle unit for dispensing a viscous adhesive mass onto a window, in particular into a gap formed between a window pane and a profile frame, wherein the nozzle unit is formed from a nozzle device movable in a horizontal window plane relative to the window with a nozzle element, wherein the nozzle member is rotatably disposed on the nozzle device, wherein the nozzle member has a nozzle opening, which is rotatable in the direction of a vertical plane of application of the window.

In the manufacture of windows or doors with glass insert, a window pane, in particular an insulating glass pane, is inserted into a profile frame made of wood, plastic and / or aluminum for receiving the window pane. The window pane is aligned in the profile frame and jammed by Verklotzen with the profile frame or fixed in this. Since the Verklotzen often done manually, and thus associated with high staff costs, it is known to glue windowpanes in a profile frame. The gluing can also be carried out by means of an adhesive robot, which reduces the installation costs of a window. When gluing the window pane is also aligned in the profile frame and formed between a peripheral edge of the window and the profile frame gap is filled with an adhesive mass at least in sections. Due to the thus formed intimate connection between the window pane and the profile frame, the window pane becomes a structural component of the window. It is therefore of great importance that the gap is filled as evenly and accurately as possible with the adhesive material.

The adhesive robots known from the prior art for carrying out the above-described bonding or window assembly are regularly formed from a base frame for receiving a profile frame with a window pane and a nozzle device movable relative to the base frame or the window. The nozzle device or window is movable in the direction of two axes in the manner of an X / Y table, so that each point of the window can be approached by the nozzle device. Furthermore, a nozzle element is provided on the nozzle device, which has an asymmetrical nozzle or a nozzle opening at its end facing the window. The nozzle opening is aligned in the direction of the gap formed between the window pane and the profile frame in such a way that the adhesive mass can be conveyed or injected into the gap without unwanted adhesive residues remaining on a visible side of the window pane. This requires the most accurate positioning of the nozzle element or the nozzle opening relative to the filling gap. In the case of rectangular windows, this is comparatively simple, since here only straight gaps have to be traversed and filled by the nozzle element. In particular, it is not necessary to rotate the nozzle element or the nozzle opening, since its relative position to the gap does not change during the shutdown thereof. So it is also possible to operate a glue robot completely manually, semi-automatically or fully automatically, that is, for example, to manually move the nozzle member along the gap or machine-controlled the gap based on previously programmed dimensions or coordinates.

If the window to be produced differs from a straight line in contours, for example a round arch, there is the problem in the known adhesive robots that the gap can not be filled satisfactorily with sufficient accuracy. This is particularly due to manufacturing tolerances that are inevitable when bending such profile frame. Thus, the radii of a series of identical windows always diverge due to the bending process. However, such variable radii and shapes can be traversed neither manually nor with a machine control exactly, especially since the machine control must be programmed to a fixed radius. In addition, during the travel of the gap, rotation of the nozzle element is required so that the nozzle opening always points in the direction of the gap. To solve this problem adhesive robots are known from the prior art, which scan a contour of a gap in a first step and then descend the gap in a second step for bonding. As a result, however, a time and machinery costs for a bond is increased.

Furthermore, there is the problem that in the corner regions of the window or the gap formed between the window pane and the profile frame, a rotation of the nozzle element or the nozzle opening is necessary so that the adhesive mass is discharged in the direction of the gap. Turning mechanisms are known from the prior art, which are formed from a rack with a gear, wherein the rack is connected to a linear drive, such as a pneumatic cylinder. A pneumatic linear drive is particularly cost-effective, since compressed air often has to be made available anyway for operation of the adhesive robot. A rotation of the nozzle member is therefore caused by an extension of the pneumatic cylinder and thus turning the gear, which is arranged coaxially on the nozzle element, by means of the rack. For example, a rectangular window has four corners with an angle of 90 °, a rotation of the nozzle element of a total of 360 ° is necessary for complete departure of a gap. This is also necessary, for example, for arched windows or windows with other contour shapes. The rack must therefore have a length or the linear drive has a stroke which allows at least this 360 ° rotation of the nozzle element. Since such a drive device has to be moved relative to the window, it is disadvantageous that the drive device has a comparatively high weight and, from a constructional point of view, occupies a large space.

The present invention is therefore based on the object to propose a rotating device for a nozzle unit, which is more compact and less expensive to produce.

This object is achieved by a rotating device with the features of claim 1.

In the rotary device according to the invention for a nozzle unit for applying a viscous adhesive mass on a window, in particular in a gap formed between a window and a profile frame, the nozzle unit is formed from a nozzle device movable in a horizontal window plane relative to the window with a nozzle element, wherein the The nozzle member is rotatably mounted on the nozzle device, wherein the nozzle member has a nozzle opening which is rotatable in the direction of a vertical application plane of the window, wherein the rotating device comprises a scanning device which is rotatably connected to the nozzle member, wherein a scanning element of the scanning device with a contour the window is contactable, wherein the contour corresponds to a contour profile of the vertical order level, wherein a deviation of the contour from a straight line during a movement of the nozzle member along the contour of a rotation of the D senelements effected.

Consequently, when a gap is traversed with, for example, a contour curve formed as a radius, an automatic or automatic rotation of the nozzle element is effected with an alignment of the nozzle opening in the direction of the gap. It is advantageous here in particular that the exact traversing of the gap with the simultaneous introduction of the adhesive mass alone in one step is possible. That is, the gap, or a corresponding contour is scanned during the running and dispensing of the adhesive mass, so that any manufacturing tolerances or any contour shapes can already be considered in the first step. The scanning is carried out with the scanning element, which determines the contour during the departure and initiated by the scanning device rotation of the nozzle member. It is irrelevant in principle whether the contour is scanned or determined by contact with the scanning element or without contact. Thus, the rotating device can also be used on manual, semi-automatic or fully automatic adhesive robots or machines.

In particular, it can be provided that the nozzle opening is formed asymmetrically on the nozzle element, and is aligned in a delivery position orthogonal in the direction of the application level. The orthogonal orientation, based on the gap, allows a particularly reliable and accurate filling of the gap.

In an advantageous embodiment, the scanning element can be arranged at an angle α relative to an axis orthogonal in the direction of the application plane extending axis, wherein the scanning device can be configured so that the angle α is adjustable. By adjusting the angle α, in particular a relative distance of the nozzle element or the nozzle opening to the gap can be varied. An adjustment of the angle α can also serve to adapt the distance to a changed radius or a contour shape. The setting can be done, for example, simply by holding the sensing element by means of a clamping ring on the nozzle member and that the clamping ring is easily solved and rotated relative to the nozzle opening together with the sensing element.

In this respect, it is advantageous if the scanning element is arranged in the direction of a movement direction of the nozzle device on the nozzle element. So can always be a scan of a gap; which has not yet been filled with adhesive material, that is, the scanning can then take place in the direction of movement before filling.

The rotary body may be formed as a cylinder, cone, ball, etc., and is therefore particularly simple and inexpensive to produce. In one embodiment of a rotating device, the sensing element may be formed as a cylinder. The scanning element can thus act as a stop and be contacted with the contour of the window for scanning.

In a further embodiment, the sensing element may be formed as a flag. The flag may for example be formed from a straight or curved, a radius of a profile frame substantially approximated, material strips. A flag is also easy to manufacture and can provide a large contact area for scanning.

Furthermore, the rotary device can have a pressure device which presses the scanning element against the contour by means of prestressing of the nozzle element with a pressure force. This ensures that a reliable contacting of the contour takes place. In particular, the pressure device can be designed so that the pressure force always acts ortogonal in the direction of the order level.

Thus, an adhesive robot is particularly simple and inexpensive to produce, if the rotating device is designed so that it is manually manageable. Accordingly, it can be completely dispensed with a mechanical control of the rotating device when the scanning device is performed along with the nozzle member manually along the gap. This is made possible, in particular, by the fact that the rotating device, due to its construction, basically requires no automation or drives.

An embodiment is also conceivable in which the scanning element is designed as a contactless sensor element. Thus, a scan of the gap can be done without a contour would have to be contacted directly. The sensor element can be, for example, an optical or magnetoresistive sensor element which transmits contour information to the scanning device, whereby an automatic, if necessary electromotive rotation of the nozzle element is effected.

It is also advantageous if the scanning element is connected to the nozzle element in the vertical direction movable with this. Thus, a relative position of the sensing element to the window pane or the profile frame is also adjustable in the vertical direction. The scanning element can thus be easily aligned with a suitable contour formed by the profile frame and, if necessary, be moved vertically out of the profile frame.

It is particularly advantageous if the rotary device comprises a machine control which can remove the scanning element from the contour at least when a corner region of the contour is reached. Depending on the design of the scanning element, there is the possibility that the scanning element hinders a complete travel of a gap in a corner region. The scanning element can then be removed from the contour shortly before or when a corner of the contour is reached. This can be done automatically by a movement in the vertical or horizontal direction, it being possible to provide that after passing through the corner region and a corresponding rotation of the nozzle element, the scanning element is immediately contacted again with the contour.

In order to ensure a particularly simple handling or actuation of the nozzle element by means of the scanning device, it may be advantageous if the scanning element is spaced from the nozzle element. A distance connection resulting from the distance facilitates, in particular, a rotation of the nozzle element.

Alternatively, the sensing element may be formed by a nozzle tip of the nozzle member. Thus, the sensing element can be arranged directly on the nozzle tip or molded onto this. As a result, a guidance of the nozzle element is made possible by the nozzle tip itself. Further, it may not be necessary, depending on the shape of the nozzle tip with the sensing element to remove the sensing element in corner areas.

Also, the rotating device may comprise a linear drive and a transmission device which connects the nozzle member with the linear drive, such that the nozzle member is rotatable by means of the linear drive, wherein the transmission means may comprise a freewheel, which rotation of the nozzle member by means of the linear drive in a single direction of rotation allows. Accordingly, the linear drive can be coupled to the nozzle element such that the transmission device effects a conversion of a linear movement of the linear drive into a rotational movement of the nozzle element. As a result, almost any shortening of the linear drive is possible. A length of the linear drive can be a fraction of a length otherwise necessary for a complete revolution, since the liner drive can perform a complete or partial rotation of the nozzle member by an alternating movement. In each case one direction of movement of the linear drive, the nozzle element can be rotated, wherein in the opposite direction of movement due to the freewheel no rotation of the nozzle member takes place. A size and in particular length of the linear drive or the rotating device can thereby be significantly reduced. Basically, however, it is irrelevant how the freewheel is realized, with pinch rollers, sprags, pawls, a wrap spring etc ..

Thus, a direction of rotation of the freewheel can also be synchronized with a rotation caused by the scanning device. Thus, it becomes possible to structurally connect the scanning device and the transmission device in an advantageous manner. A rotation of the nozzle element caused by the scanning device is then not hindered by a coupling of the freewheel.

In the following the invention will be explained in more detail with reference to the accompanying drawings.

Show it:

1 an embodiment of a rotating device in a perspective view;

2 a schematic representation of a second embodiment of a rotating device in various positions on a window;

3 a partial sectional view taken along a line III-III 2 ;

4 a third embodiment of a rotating device on a window in a schematic representation;

5 a front view of a sensing element;

6 : a plan view of the sensing element 5 ,

1 shows a partial perspective view of a nozzle device 10 , which is part of a nozzle unit not shown here. The nozzle unit allows variable mobility of the nozzle device 10 within a plane shown here with coordinate axes X and Y. The nozzle device 10 further comprises a nozzle element 11 , which on a holding device partially shown here 12 the nozzle device 10 is rotatably mounted. The nozzle element 11 has an asymmetrical nozzle tip 13 with one of a longitudinal axis 14 of the nozzle element 11 deviating nozzle opening 15 on. The nozzle opening 15 is aligned in the direction of a vertical order plane, not shown here, of a window. The orientation of the nozzle opening 15 is with an axis 16 indicated. The nozzle opening 15 is now with the nozzle tip 13 or the nozzle element 11 in the with the arrow 17 rotatable direction indicated.

Next is at the nozzle device 10 or the nozzle unit, a rotating device 18 intended. The turning device 18 in the present case comprises a scanning device 19 as well as a linear drive 20 with a transmission device 21 , The scanning device 19 includes a cylindrical sensing element 22 , which firmly with a guide ring 23 connected, in turn, on a round nozzle body 24 of the nozzle element 11 in a vertical direction, as with the arrow 25 indicated, slidably mounted. The scanning element 22 can be raised or lowered in corner areas of a window, not shown here, so that the nozzle tip 13 can completely exit the corner area. A lifting of the sensing element 22 can by means of a lifting device shown here unambiguously as a dashed line 26 the scanner 19 respectively. The lifting device 26 further allows rotation and locking of the sensing element 22 relative to the axis 16 at an angle α, as with an arrow 27 suggests. So can the sensing element 22 in its relative position to the nozzle opening 15 be varied. This adjustment may be required to accommodate the sensing element 22 to adapt to a contour of a window, not shown here.

The linear drive 20 is here from a pneumatic cylinder shown schematically 28 with a piston rod 29 formed, and on the holding device 12 firmly fixed. At the piston rod 29 is a rack 30 attached and along an axis 31 like with an arrow 32 indicated, in a longitudinal direction with a stroke of a length L movable. The rack 30 the transmission device 21 combs with a gear 33 which is coaxial with the nozzle element 11 is arranged. The gear 33 is with an outer ring 34 a rolling bearing 35 firmly connected, with a not visible here inner ring of the bearing 35 with the nozzle element 11 is firmly connected. The rolling bearing 35 forms here between the outer ring 34 and the inner ring a clamp body not shown visible - freewheel. The freewheel is designed or arranged such that the nozzle element 11 only in the direction of the arrow 17 is rotatable. A movement of the rack 30 or a complete stroke of length L causes a quarter turn of the nozzle member 11 together with the scanner 19 , as it comes to a coupling of the freewheel. An opposite movement of the rack 30 Although causes a rotation of the gear 33 but no rotation of the nozzle member 11 because the freewheel is then decoupled and no torque from the gear 33 on the nozzle element 11 can be transferred.

A synopsis of 2 and 3 shows a movement of a nozzle tip 36 in three positions A, B and C, relative to a window pane shown only schematically here 37 and a profile frame 38 , The movement of the nozzle tip 36 takes place along the axes 39 and 40 in a horizontal window level 41 , Between the windowpane 37 and the profile frame 38 is a gap 42 formed, which at the same time a vertical order level 43 for a glue mass 44 forms. The glue mass 44 exits from a nozzle opening 45 the nozzle tip 36 towards the order level 43 or the gap 42 out. The nozzle opening 45 is therefore always substantially orthogonal to a contour 46 , what a 2 is hinted at, the gap 42 aligned. This is done in a corner area 47 the windowpane 37 or the profile frame 38 a rotation of the nozzle tip 36 in the direction of an arrow 48 , Consequently, except for the corner area 47 the nozzle opening 45 whose orientation is by an axis 49 is shown, always orthogonal to the contour 46 aligned. The rotation in the corner area 47 takes place by means of a rotary device, not shown here.

4 shows a schematic representation of a nozzle tip 50 with a scanning element 51 when driving off a contour 52 a gap, not shown here in the direction of an arrow 53 , The contour 52 is formed in a radius R. A nozzle opening 54 or an orientation of the nozzle opening 54 descriptive axis 55 is orthogonal to the contour 52 aligned. The scanning element 51 is relative to the nozzle tip 50 at a distance a firmly connected to this. An outer circumference 56 of the scanning element 51 is with the contour 52 contacted, so that a change in the radius R is a rotation of the nozzle tip 50 in the direction of an arrow 57 causes. One between the nozzle tip 50 and the sensing element 51 imaginary connection axis 58 is at an angle α relative to the axis 55 oriented. A change in the angle α thus allows a change in a distance b of the nozzle tip relative to the contour 52 ,

A synopsis of 5 and 6 shows a scanning element 59 which consists of a stick 60 with a arranged thereon, designed in the manner of a flag metal strip 61 is trained. The metal strip 61 is bent in a radius r, so that he can adapt to a radius of a contour of a window, not shown here, particularly well.

Claims (15)

Turning device ( 18 ) for a nozzle unit for dispensing a viscous adhesive mass onto a window, in particular into a space between a window pane ( 37 ) and a profile frame ( 38 ) formed gap ( 42 ), wherein the nozzle unit from a in a horizontal window level ( 41 ) relative to the window movable nozzle device ( 10 ) with a nozzle element ( 11 ) is formed, wherein the nozzle member is rotatably disposed on the nozzle device, wherein the nozzle member is a nozzle opening ( 15 . 45 . 54 ), which in the direction of a vertical order level ( 43 ) of the window is rotatable, characterized in that the turning device comprises a scanning device ( 19 ), which is non-rotatably connected to the nozzle member, wherein a sensing element ( 22 . 51 . 59 ) of the scanning device with a contour ( 46 . 52 ) of the window can be coupled, wherein the contour corresponds to a contour curve of the vertical application plane, wherein a deviation of the contour from a straight line during a movement of the nozzle element along the contour causes a rotation of the nozzle element. Turning device according to claim 1, characterized in that the nozzle opening ( 15 . 45 . 54 ) asymmetrically on the nozzle element ( 11 ) is formed, and in a deployment position orthogonal in the direction of the order level ( 43 ) is aligned. Turning device according to claim 1 or 2, characterized in that the scanning element ( 22 . 51 . 59 ) relative to an orthogonal in the direction of the order level ( 43 ) axis ( 16 . 49 . 55 ) of the nozzle element ( 11 ) is arranged at an angle α, wherein the scanning device ( 19 ) is formed so that the angle α is adjustable. Turning device according to one of the preceding claims, characterized in that the scanning element ( 22 . 51 . 59 ) in the direction of a movement direction ( 53 ) of the nozzle device on the nozzle element ( 11 ) is arranged. Turning device according to one of the preceding claims, characterized in that the scanning element ( 22 . 51 ) is formed as a rotational body. Turning device according to one of claims 1 to 4, characterized in that the scanning element ( 59 ) is formed as a flag. Turning device according to one of the preceding claims, characterized in that the rotating device ( 18 ) has a pressure device which the scanning element ( 22 . 51 . 59 ) by means of biasing of the nozzle element ( 11 ) with a pressure force against the contour ( 46 . 52 ) presses. Turning device according to one of the preceding claims, characterized in that the rotating device is designed so that it is manually handled. Turning device according to one of claims 1 to 4, characterized in that the scanning element is designed as a non-contact sensor element. Turning device according to one of the preceding claims, characterized in that the scanning element ( 22 . 51 . 59 ) on the nozzle element ( 11 ) in the vertical direction ( 25 ) is movably connected to this. Turning device according to one of the preceding claims, characterized in that the rotating device ( 18 ) comprises a machine control which controls the scanning element ( 22 . 51 . 59 ) at least when reaching a corner region ( 47 ) of the contour ( 46 . 52 ) can remove from the contour. Turning device according to one of the preceding claims, characterized in that the scanning element ( 22 . 51 . 59 ) from the nozzle element ( 11 ) is spaced. Turning device according to one of claims 1 to 9, characterized in that the sensing element is formed by a nozzle tip of the nozzle member. Turning device according to one of the preceding claims, characterized in that the rotating device ( 18 ) a linear drive ( 20 ) and a transmission device ( 21 ), which the nozzle element ( 11 ), such that the nozzle element is rotatable by means of the linear drive, wherein the transmission device has a freewheel, the rotation of the nozzle member by means of the linear drive in a single direction of rotation ( 17 . 48 ). Rotary device according to claim 14, characterized in that a direction of rotation of the freewheel ( 17 . 48 ) with a through the scanner ( 19 ) is synchronized rotation.

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