DE102008047810B4 - Device for attaching electrical, even prefabricated connection parts such as solder tags, soldering edge, connectors or the like elements - Google Patents

Abstract

The invention relates to a device for fastening electrical, even prefabricated connection parts such as solder tags, solder contacts, connectors or the like elements on flat or curved discs, which for contacting at least one, for example by screen printing in thick-film technology applied contact surface, comprising a position detection device, a disc receiving table with Stops, means for moving the discs in the x- and y-direction of a lying in the disc plane coordinate system and means for receiving the connecting parts to be fastened. The means for receiving the fasteners to be fixed freely in the xy plane on or above the disc receiving area fixable , wherein each receiving means or a plurality of receiving means is associated with an adjustable Laserlötkopf and the receiving means at least in the region of the solder joint access of the laser light made possible to be fastened connector union. Furthermore, a plurality of suction cups which are adjustable in the z-direction for holding the disks during the soldering process are provided on the receiving table. According to the invention, a special machine station is provided for effectively carrying out the assembly, soldering and removal operations.

Description

The invention relates to a device for fastening electrical, even prefabricated connection parts such as soldering tags, solder contacts, connectors or the like elements on flat or curved windows, eg vehicle windows, which have at least one, for example by screen printing in thick film technology applied contact surface for contacting, comprising a position detection device, a disc receiving table with stops, means for moving the discs in the x and y direction of a lying in the disc plane coordinate system and means for receiving the fasteners to be fastened according to the preamble of claim 1 as an addition to DE 10 2007 026 323.8 -34.

From the DE 10 2004 057 630 B3 For example, a method and apparatus for soldering induction heat terminals is previously known. In this solution, contact elements are soldered to solder pads disposed on a non-metallic disk using a soldering tool to radiate a magnetic field to the solder joints to heat them by induction. According to the invention, the size and the shape of the soldering tool are dimensioned as a function of the area on which a plurality of solder joints to be heated simultaneously in a soldering process are arranged. At the same time, the frequency used is adapted to the respective connection geometries and set as low as possible. With such a solution, a high operating speed with improved heating of the components to be soldered to be achieved.

However, it has been found that in many cases induction heat soldering does not involve the actual contact surfaces but other coatings and screen printing elements, e.g. Heaters for a pane heater or dipoles of an antenna structure are heated and possibly damaged.

The not pre-published, attributed to the applicant DE 10 2006 019 998.7 shows an apparatus and a method for soldering solder contacts on screen prints of car glass panes, wherein a base to be placed on a base frame is provided with a relative to this in an xy plane movable coordinate from an extended pre-station for loading and unloading the car glass into a retracted Processing plant can be brought. Furthermore, a fixable on the coordinate table, adapted to the mass and curvature of the respective car glass pane disc support available. About this disc support is a fixed to a head piece of the base frame removable disk with adapted to the number and arrangement of solder contacts on the screen printing of the individual car glass sheets soldering heads.

The interchangeable plate for arranging and aligning the soldering heads has flanges, consoles and intermediate plates as well as a coding in the form of a hole pattern for identification. Furthermore, the disc support has at least one centering stop for the glass pane.

The process side, the car glass pane is first inserted into the adapted to mass and curvature disc support, which then takes place centering of the disc. In the next step, the car window glass is clamped against a front centering stop. Subsequently, the disc support with disc is retracted into the processing system, up to a further stop located there. In the next step, a fine positioning of the disc support with the clamped autoglass disc by means of a controlled adjustment of a coordinate table, namely by resorting to an optical detection of the respective contact strips or contact surfaces on the disc. After the fine positioning has taken place, the soldering heads are moved in the direction of the imprints, i. lowered the contact surfaces of the car glass panel. Thereafter, the individual solder contacts are inserted into the receptacle of the soldering head and there is a lowering of the soldering head for inductive soldering. Due to the special design of the soldering head, the inductive heating takes place only in the area of the opposite surfaces in the soldering process while avoiding the heating of other screen-printing structural elements.

The Applicant's device according to the above description is to be further developed in terms of their productivity and reproducibility in performing the solder joints.

Accordingly, it is an object of the invention to provide a further developed device for attaching electrical, also prefabricated connection parts such as solder tags, solder contacts, connectors or the like elements on flat or curved windows, which have at least one, for example by means of screen printing in thick-film applied contact surface for contacting, which ensures automatic handling and thus high productivity.

The solution of the object of the invention is achieved with a device according to feature combination of claim 1.

The device for attaching electrical, even prefabricated connection parts such as solder tags, solder contacts, connectors or the like elements on even or curved According to the parent application, it is assumed that at least one contact surface, for example applied by means of screen printing in thick-film technology, is present on the disk for contacting. Furthermore, the device comprises a position detection device, a disc receiving table with stops, means for moving the disc in the x- and y-direction of a lying in the disc plane coordinate system and means for receiving the connecting parts to be fastened.

The means for receiving the connecting parts to be fastened are freely fixable in the x-y plane on or above the disc receiving area, wherein each receiving means an adjustable laser soldering head or a soldering head are assigned a plurality of receiving means.

The receiving means are designed so that at least in the region of the solder joint free access of the laser light is made possible to be fastened to the connector part.

Furthermore, several, adjustable in the z-direction suction cups for holding the discs during the soldering process are provided on the receiving table.

Ausgestaltend it is possible to provide a first variant of the device according to the invention with a roller shutter-like closure for protection against exiting laser light.

The position detection device can be attached to the receiving table and serves to contactlessly scan the position of the contact surfaces or other suitable marking points which are located on the disk. This position detecting device may be formed as a laser scanner or as an optical detector using a CCD or CMOS camera.

The adjustable in the z-direction suction cups are arranged in one embodiment of the invention on an adjustable in the x- and y-direction coordinate table, which in turn is located on the receiving table.

In this first embodiment, the disc is supported relative to the receiving table on height-adjustable ball mounts.

In a further embodiment of the device according to parent application, the stops are adjustable in at least the x- or y-direction in order to ensure a fine positioning of the disc.

In this case, in this embodiment of the invention, the disk is secured against two spaced x-stops and over one e.g. hydraulically operated adjusting cylinder pressed against at least one y-stop.

The adjustment for fine positioning of the disc is then carried out by means of an optical measurement of markers and / or the contact surfaces, which are located on the disc. In this embodiment of the invention, a camera can be used for position detection.

In the second variant of the device according to the parent application, at least one device for picking up and placing the respective connecting parts is located laterally of the means of transport or in another manner adjacent thereto. This device can be designed as a pick and place station or robot and have its own position detection of the male and female connectors to be placed.

The device for receiving and placing the respective connecting parts is able to place the connecting parts either in the means for receiving or directly on the disc and the contact surfaces located there. If the device for receiving and placing the connecting parts deposits them directly on the disk, either the fixing part can remain fixed via a holding finger until final soldering or it is possible to use a pasty soldering agent for fixing.

The second embodiment of the device further comprises a plurality of stops adjustable in the z-direction in order to be able to lift or place the pane.

These stops interact with the also adjustable in the z-direction suckers, so that the disc is fixable against the stops.

The laser soldering heads can also be arranged on the receiving table in the second embodiment of the device.

Alternatively, in a third embodiment of the device, it is possible to arrange the laser soldering heads above the pane that can be fixed on the receiving table.

In order to spend the disk of the transport in such a position that the contact surfaces are accessible to the disc depending on the arrangement of the laser solder heads, a device for receiving and turning the disc is provided in one embodiment of the invention. This device comprises gripping elements which are adjustable in height, wherein the gripping elements allow by rotation a turning of the recorded disc. For the purpose of turning, the grippers are moved towards the disc side edges. In the next step, a lifting of the gripper takes place until a sufficient distance has been reached by the transport means, and a subsequent execution of the pivoting movement for the purpose of turning. By lowering the height-adjustable gripper then the disc can be placed back on the transport.

The device for picking up and turning the pane may comprise at least one camera as position detecting device which detects both the position of the pane and the arrangement of the contact surfaces on the pane or similar markings.

The teaching of the invention now assumes that the means of transport is subject to further development by providing a transport plate which can be displaced in a mobile manner between several stations. These multiple stations can be arranged on a common frame and be located in the immediate vicinity of the actual soldering station.

The quasi-standard transport plate takes on a base frame, which is adapted to the respective disc dimensions. On the base frame mold supports are fixed as a mold nest for the disc and stops.

The mold supports can be movably mounted via a linear guide in the z-direction and supported by an adjustable compression spring.

In a first and / or second station, the disc to be processed is placed on the base frame, in which case the disc comes into lateral positive engagement with the mold supports or mold cavities. The transport plate with base frame and disc is then moved to a third station, where the soldering operations are performed. This third station is the aforementioned soldering station.

Subsequently, the transport plate with base frame and disc is transferred to a fourth, the removal station. After removal of the disc, the relevant transport plate is available for refitting. In the meantime, however, already another transport plate has been equipped with base frame and spent from the second to the third station, so that in turn the soldering process can take place.

The invention will be explained below with reference to an embodiment and with the aid of figures.

• 1 Seitenansichten einer ersten Vorrichtung;
• 2 eine Draufsicht auf die Darstellungen gemäß 1 der ersten Vorrichtung;
• 3 Seitenansicht und Draufsicht einer zweiten Variante der Vorrichtung mit automatischer Bestückung;
• 4 Seitenansicht und Draufsicht einer dritten Variante der Vorrichtung mit oberhalb der Scheibe befindlichen Laserlötköpfen und ebenfalls vorgesehener automatischer Bestückung;
• 5 Vorderansicht und Seitenansicht einer Wendeeinrichtung zur Verwendung bei den Vorrichtungen gemäß 3 und 4;
• 6 eine perspektivische Darstellung der Automatenstation;
• 7 eine Detaildarstellung eines Formnestes und
• 8 eine Draufsicht einer beispielhaften Automatenstation ähnlich der 6.

Hereby show:

• 1 Side views of a first device;
• 2 a plan view of the representations according to 1 the first device;
• 3 Side view and top view of a second variant of the device with automatic assembly;
• 4 Side view and top view of a third variant of the device with located above the disc Laserlötköpfen and also provided automatic assembly;
• 5 Front view and side view of a turning device for use in the devices according to 3 and 4 ;
• 6 a perspective view of the machine station;
• 7 a detailed representation of a mold nest and
• 8th a plan view of an exemplary machine station similar to the 6 ,

In the device according to the 1 and 2 is located on a disc receiving table in an x and y direction adjustable coordinate table 2 , The coordinate table 2 takes several suckers 8th on, with the help of which to be fitted disc 1 raised on the one hand, but on the other hand against the ball shots 5 can be fixed.

In addition, at least one y-fixed stop 6 and at least two x-fixed stops 7 are present. Means for admission 9 the fasteners to be fastened are adjustably located on the receiving table, wherein each receiving means 9 an adjustable laser soldering head 4 or a soldering head are assigned a plurality of receiving means. These laser soldering heads 4 are also adjustable on a slide, in particular slidably guided.

As a position detection or recognition device finds, for example, a laser scanner 3 Application. This scanner is able to detect, for example by means of screen printing applied contact surfaces, which are located on the disc, so that a corresponding positional positioning of the disc 1 can be done.

The device according to the 1 and 2 is still with a housing 10 provided in the form of a shutter-like closure.

The procedure with reference to the device according to 1 and 2 and their operation is as follows.

First, the shutter is opened in the form of the shutter. Following are the to soldering connecting parts, such as solder terminals, in the receiving means 9 inserted.

After that, the disc becomes 1 from the operator to the ball pads 5 placed. The next step is the disc 1 then moved by hand to the fixed stops in the x-direction 7 and y-direction 6 and closed the shutter shutter.

Cylinders with suckers 8th then drive up and fix the disc 1 by a vacuum suction process.

The one on the disc 1 Contact surface imprint is due to movement of the coordinate table 2 in the x and y directions by means of scanning by the position detection device 3 opposite to the location of the receiving means 9 aligned.

In the next step, the cylinders go with the suckers 8th down and pull the disc 1 against in the receiving means 9 located solder terminals.

After that the laser soldering heads become 4 activated and there is a soldering of the solder contacts to the respective contact surfaces of the disc.

The suckers 8th then get off the disk 1 disconnected by switching off a vacuum connection, not shown in the drawing. After opening the closure, the disc can be removed.

The actual soldering process runs in the device according to the 1 and 2 automatically, but still a manual insertion of the solder contacts in the receiving means is required.

Another automation can with the devices according to the representations of the 3 to 5 respectively.

For further automation is a turning device 16 present, which is capable of slicing 1 by means of a height-adjustable turning unit, which gripper 19 includes, record and rotate. The turning device 16 has one or more cameras 15 on that the location of the disc 1 and thus also optically detect the position of the contact surfaces on the disc. The acquired data can be forwarded to a higher-level control unit.

On the basic frame as shown 3 are height adjustable stops 17 , Pneumatic cylinder with attached suction cups 8th , at least one movable y-stop 12 and at least one movable x-stop 11 is attached.

Furthermore, laser heads 4 on corresponding slide in appropriate number and position and the receiving means 9 available for solder contacts.

Laterally from the base frame are pick and place stations or robots 14 mounted for receiving and placing the solder contacts.

The robots 14 take over the solder contacts of lateral bands 13 and place them in the receiving means 9 ,

The respective position was previously from the data of the cameras 15 that are above the conveyor belts 13 are calculated.

The disc 1 self is about a means of transport 18 moved into the device.

Depending on the position of the disc 1 on the means of transport 18 If necessary, a turning with the help of the turning device 16 necessary. The turning device is capable of using the height-adjustable turning unit and the grippers 19 fix the disc, lift it and rotate it by 180 ° and put it back on the means of transport. This is done simultaneously via the cameras 15 the turning device 16 measure the position of the contact surfaces and thus also the disk itself.

After the measurement data, the x-11 and y-12 stops are moved. The travel and correction amount is determined on the basis of the measurement data obtained from the cameras.

With the help of the robot 14 The solder contacts are from the conveyor belt 13 taken and in the shots 9 used.

After that, the disc becomes 1 with the help of the means of transport 18 moved against the x-stops 11 and there is a pressing of the disc 1 with the help of the cylinder 20 against the y-stop 12.

The height-adjustable stops 17 lift the disc 1 from the transport means 18, with the help of the sucker 8th the disc 1 is fixed by suction.

The suckers which can be moved in the z-direction 8th pull the disc 1 against the likewise height-adjustable stops 17 , It then comes in a z-direction moving the recording 9 with the solder contacts, in the direction of the underside of the disc.

The pictures 9 have a stencil-like opening, eg in the form of a bore, so that the laser light of the laser heads 4 reaches the soldering point.

After activating the laser heads 4 The soldering process has been completed, the suckers 8th released by switching off the vacuum from the disc, it drive then the height-adjustable stops 17 down and there is a settling of the disc 1 on the means of transport 18 ,

About the means of transport 18 then the disc can be moved out of the device.

In the embodiment according to 4 are the laser heads 4 above the base plate and thus above the disc 1 ,

With the help of the robot 14 become the ones of the conveyor belts 13 each removed solder contacts 21 placed directly on the disc and the existing contact surfaces there and at least temporarily, ie fixed until the end of the soldering process.

Also in this variant of the invention, the recording means allow free access of the laser light, starting from the laser heads 4 to the soldering area.

In the variant after 4 becomes the disc 1 in the described turning device 16 with the help of the local cameras 15 optically measured with respect to the position of the contact surfaces. After this measurement process, the disc 1 about the means of transport 18 moved into the device.

During the transport of the disc into the device, the x-stops 11 and the y-stops 12 are moved and thus the later position of the disc 1 corrected. The correction amount was calculated by evaluating the signals from the cameras 15 that are in the turning device 16 are determined.

The disk is then moved by moving the transport 18 moved against the two x-stops 11 and there is a press of the disc 1 against the y-stop 12 by means of the cylinder 20 ,

The next step is to drive the height-adjustable stops 17 up and lift the disc 1 from the means of transport 18 from. After that, the cylinders suck 8th the disc and pull it down against the height-adjustable stops 17 ,

With the help of cameras 15 the position of the solder contacts on the conveyor belts 13 is determined and via the robot 14 a corresponding solder contact selected and recorded and transferred to a positionally correct position and so on the disc 1 and the contact surface located there stored.

The robots 14 Press the solder contacts slightly against the disc 1 ,

The next step will be the laser heads 4 activated and there is the triggering of the soldering process.

After the robots 14 were moved back, takes place a release of the disc by switching off the vacuum of the suckers 8th , drive the height-adjustable stops 17 in -z direction down, leaving the disc 1 again on the means of transport 18 discontinued and removed from the treatment area.

The 6 shows a perspective view of the machine station according to the invention.

The soldering station 30 is referred to here as the third station (see also 8th ). The soldering station 30 is executed as explained above.

The soldering station 30 adjacent are further stations with station 1 . 2 and 4 according to 8th are designated.

In the stations 1 and or 2 the equipment will be in the station 3 the soldering process and in the station 4 the removal of the disc 1 realized. The individual stations are on a rack 31 Arranged over a rail guide 32 features.

The rail guide takes different transport plates 33 on. These quasi standard transport plates 33 in turn, each carry a base frame 34 whose configuration is roughly adapted to the disc dimensions.

At the base frame are sufficient stops 35 as well as mold pads 36 attached. The mold pads 36 form a mold nest for safe picking up the pane 1 ,

Like in the 7 recognizable, there is a mold cavity, which is fixable on the base frame 34, from a mold support 37 , a linear guide 38 and a spring-biased bearing 39 ,

The top view 8th shows how in the station 3 the disc 1 is held for the soldering process. In the stations 1 and 4 are empty base frames 34 shown. In the station 4 was the previously in the station 3 taken soldered disc. The in the station 1 and 4 located base frame 34 can be re-equipped. After eg in the station 1 the assembly of the base frame was done with a disc, the arrangement thus populated about the station 2 in the soldering station (station 3 ) to realize the desired soldering operations. To avoid dead times, both in the station 1 as well as in the station 2 be fitted. The station 4 can connect another station, for example, to move a soldered disc together with transport plate and base frame in a parking position to make a quality control there.

Claims (7)

Device for fastening electrical, also prefabricated connection parts such as soldering tags, soldering contacts, plug connectors or similar elements on flat or curved disks, which for contacting at least one, for example by screen printing in thick film applied contact surface, comprising a position detection device, a disk receiving table with stops, means for Moving the disks in the x- and y-direction of a coordinate system lying in the disk plane and means for receiving the connecting parts to be fastened, wherein the means for receiving the connecting parts to be fastened are freely fixable in the xy plane on or above the disk receiving region, each or a plurality of receiving means is associated with an adjustable laser soldering and the receiving means at least in the region of the solder joint allow access of the laser light to be fastened to the connecting part and several more on the receiving table In the z-direction adjustable suction for holding the discs are provided during the soldering process, characterized in that as a disc transport means at least one transport plate is provided with interchangeable base frame, the base frame forms the disc receiving table, further the transport plate from a loading position in the soldering position and from there into a removal position is movable. Device after Claim 1 , characterized in that a frame accommodates a plurality of movable transport plates with base frame, wherein in a predetermined frame position, the soldering station is located and this adjacent at least one placement station and a removal station is provided. Device after Claim 1 or 2 , characterized in that the soldering station has a shutter-like closure for protection against exiting laser light. Device according to one of the preceding claims, characterized in that the position detection device is fixed to the base frame and scans the position of the contact surfaces or suitable marker points without contact. Device according to one of the preceding claims, characterized in that the adjustable in the z-direction suction cups are arranged on a coordinate table adjustable in xy direction. Device according to one of the preceding claims, characterized in that the disc is supported over a plurality of mold supports, which are formed as a mold cavity, relative to the base frame. Device according to one of the preceding claims, characterized in that the stops in at least x or y-direction are adjustable in order to ensure a fine positioning of the disc.

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